JPH08310552A - Opening / closing device for outer lid in box - Google Patents

Abstract

(57) [Abstract] [Purpose] Simplifies the mechanism for swinging and attaching the outer lid of the box such as the article storage case or dust chute, eliminating the need to attach the conventional steel hinge at all, and reducing the lid installation time. Reduce.
The number of parts is reduced to facilitate management and reduce the manufacturing cost. When the lid is fully closed, the outer surface of the lid mounting part has a smooth appearance, and the lid mounting accuracy is improved to smoothly open and close the lid. The weight is reduced, and even when the outer surface plate of the box-constituting panel is damaged, it can be easily repaired. [Structure] The first hinge structure part 12 is attached to the lower frame member 11 of the front wall opening 2 of the box body 1 such as an article storage case or a dust chute.
Is provided, the second hinge component 22 is provided on the side frame member 21 at the lower edge of the lid 3 housed in the front wall opening 2 of the box body, and the lid 3 is formed by the combination of both hinge components 12, 22. Box front wall opening
2 is swingably attached to the lower frame member 11, and swings around the tip of the outward convex portion 26 of the second hinge forming portion 22 when the lid 3 opens outward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and closing an outer lid of a box such as an article storage case, a dust box or a dust chute.

[0002]

2. Description of the Related Art Heretofore, a steel hinge has been used to attach an outer opening type lid to this type of box. In addition, a so-called through hinge was used especially when disliked by unevenness in appearance. As a method of attaching these hinges to the box body or the lid, there are a case where a fixture such as a bolt is used and a case where welding is performed.

[0003]

However, according to the above-mentioned conventional method of using the former fixture such as a bolt,
The hinge installation work is very time-consuming, and the latter welding method requires equipment such as a welding machine and requires high welding skill. Since there are many, there was a problem that the manufacturing cost was high. In addition, since multiple hinges are usually used, according to the above-mentioned conventional method, it is very difficult to align the rotary cores of the hinges in every case, and it is very difficult to obtain mounting accuracy, and the number of parts is large, so management is difficult. It was troublesome. In addition, in order to improve the appearance, extra work such as blindfolds and painting is required.In addition, since the hinges are made of steel and the individual weight is heavy, the weight of the entire box body increases and the steel hinges are long-term. There was a problem that rust was generated by the use of. Further, when the hinge is attached by welding, there is a problem that it is very troublesome to repair when the outer surface plate of the component panel of the box is damaged.

The object of the present invention is to solve the above-mentioned problems of the prior art, to simplify the swinging and mounting mechanism of the outer lid of the box such as the article storage case or dust chute, and to mount the conventional steel hinge. Is completely unnecessary, the number of man-hours for mounting the outer lid can be reduced, the mounting work is labor-intensive, the manufacturing cost is low, and the number of parts is small, so management is easy. When fully closed, you can get a smooth appearance with no unevenness on the outer surface of the mounting part of the outer opening lid, and the lid mounting accuracy is very high, so that the lid can be opened and closed smoothly and rust An object of the present invention is to provide an opening / closing device for an outer lid in a box, which does not occur, can be reduced in weight, and can be easily repaired even when the outer surface plate of the box constituting panel is damaged. .

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the invention according to claim 1 is the lower frame member of the front wall opening of a box such as an article storage case or a dust chute. Is provided with a first hinge component, and a second hinge component is provided on the side frame member at the lower edge of the lid housed in the box front wall opening, and the first hinge component of the lower frame member of the front wall opening is provided. The hinge forming portion includes an upper projecting portion extending upward from an upper wall portion of the lower frame member and an upward projecting portion provided inside the upper projecting portion so as to face each other and having a guide surface having an arc-shaped cross section. Composed
A second hinge component fitting recess having an opening that opens upward is formed in the first hinge component, and a step-shaped protrusion is provided inside the tip-side portion of the upper protrusion. , A guide surface having a concave arc-shaped cross section is provided on the lower side of the stepped convex portion,
The second hinge forming portion of the lid-side frame member extends downward and the inner side surface is a convex surface portion having an arc-shaped cross section, and the second protruding portion protrudes outward from the tip-side portion of the lower protruding portion and has a tip end. And an outer convex portion having an end surface with an arcuate cross section,
The second hinge component is provided with a recess for first fitting the first hinge component that has an opening that opens outward, and the opening of the recess of the first hinge component is the second hinge. The width from the tip of the downward protrusion of the component to the tip of the outward protrusion is the same as or slightly wider than that of the second protrusion, and the downward protrusion and the outward protrusion of the second hinge component are It is configured to be able to move in and out through the opening of the recess of the first hinge component, and in the recess of the first hinge component of the lower frame member of the box front wall opening,
The second hinge forming portion of the side frame member at the lower edge of the lid is fitted so that the convex surface portion of the downward projecting portion of the second hinge forming portion fits along the guide surface having the arcuate cross section of the upward protruding portion. The end surface having the arcuate cross-section at the tip of the outer convex portion is contacted with the first
When the lid swings outward with respect to the lower frame member of the box front wall opening, the lid is engaged with the stepped convex portion on the hinge component side.
The convex surface portion of the downward extension portion of the second hinge component portion of the lid side frame member moves along the guide surface of the upward convex portion of the first hinge component portion, and the lid is located outside the second hinge component portion. The second hinge forming portion of the lid side frame member is configured to swing about the tip of the convex portion, and after swinging of the lid, if necessary,
The gist of the present invention is an opening / closing device for an outer lid in a box, in which the lid can be removed by allowing the lid to be removed by letting it escape above the opening of the recess of the first hinge component.

Next, the invention according to claim 2 is characterized in that a concave portion that opens outward is provided above the front edge portion of the lower frame member of the front wall opening portion of the box body such as the article storage case or the dust chute. (1) A hinge forming portion is provided, an engaging portion extending downward is provided at an outer edge portion of an upper wall portion of the recess, and a guide surface having an arc-shaped cross section from the lower edge of the opening to the base portion of the upper wall portion in the recess portion. Is provided on the outside of the lower end of the side frame member of the lower edge of the lid housed in the opening of the front wall of the box, and a bent portion having a substantially arcuate cross section bent obliquely inward downward, and a tip end of this bent portion. A second hinge component having a folded-back engaging portion that is folded back upward is provided, and the upward-folded folded engaging portion of the second hinge component of the lid is a recess of the first hinge component of the lower frame member. Fitted inside,
When the upward folded-back engaging portion is engaged with the engaging portion at the upper edge of the opening of the recess, and the lid swings outward with respect to the lower frame member of the box front wall opening, the lid-side frame member The gist is an opening / closing device for an outer lid in a box, in which the tip of the second hinge component is guided by a guide surface having an arcuate cross section in the recess.

Next, the invention according to claim 3 is characterized in that the lower frame member of the front wall opening portion of the box body such as the article storage case or the dust chute is provided with the first hinge constituent portion, and the box front wall opening portion is provided. A second hinge component is provided on the side frame member at the lower edge of the accommodated lid, and the first hinge component of the lower frame member of the front wall opening extends above the upper wall of the lower frame member. The upper protruding portion and the upward protruding portion provided inside the upper protruding portion so as to face each other and having a guide surface having an arc-shaped cross section,
The second hinge component fitting recess having an opening opening upward is formed in the first hinge component, and the fitting protrusion is provided near the base of the upward protrusion, and the upward protrusion is provided. A stepped convex portion is provided inside a portion close to the tip end, a guide surface having a concave arc-shaped cross section is provided below the stepped convex portion, and the second hinge forming portion of the lid side frame member extends downward. A downward projecting portion whose inner surface is a convex portion having an arc-shaped cross section,
An opening that is formed by an outwardly projecting portion that projects outward from a portion of the downward projecting portion near the tip and that has an end surface having an arc-shaped cross section at the tip, and that opens outward in the second hinge forming portion. Is provided with a concave portion for partially fitting the first hinge component portion, and a fitting concave portion extending from the base of the outward convex portion to the tip of the downward protruding portion is provided. The second hinge constituting portion of the side frame member at the lower edge portion of the lid is fitted into the concave portion of the first hinge constituting portion of the lower frame member, and the convex surface portion of the downward projecting portion of the second hinge constituting portion is convex upward. Is abutted along the guide surface having an arc-shaped cross section, and the fitting protrusion near the base of the upward projecting portion is fitted into the fitting recess on the side of the second hinge component and is outward. The end surface having a circular arc-shaped cross section at the tip of the convex portion is engaged with the stepped convex portion on the side of the first hinge forming portion, and the box front wall When the lid swings outward with respect to the lower frame member of the mouth portion, the convex surface portion of the downward projecting portion of the second hinge forming portion of the lid side frame member becomes the guide surface of the upward convex portion of the lower frame member. While moving along, the lid swings around the tip of the outward convex portion of the second hinge component.
The gist is the device for opening and closing the outer lid of the box.

[0008]

In the above, according to the device for opening / closing the outer lid of the box body according to the first aspect, the first hinge constituting portion of the lower frame member of the front wall opening of the box body such as an article storage case or a dust chute is provided. The second hinge component fitting recess provided is the same width as or slightly wider than the width from the tip of the downward protrusion of the second hinge component of the lid-side frame member to the tip of the outward protrusion. And the downward protrusion and the outward protrusion of the second hinge component can be freely inserted and removed from the opening of the fitting recess of the first hinge component.

Therefore, in the lower frame member of the front wall opening of the box,
To attach the lid, the lid is arranged on the front side of the box body, and the second hinge forming portion of the lid is fitted into the fitting concave portion of the first hinge forming portion of the lower frame member from above. Good, by this, the lid can be easily attached from the front side of the box, and the number of attachment steps can be greatly reduced.

Further, the second hinge forming portion of the side frame member of the lid is fitted into the concave portion of the first hinge forming portion of the lower frame member, and the end face having the arcuate cross section at the tip of the outer convex portion is set to the first side. 1 By simply engaging the stepped convex portion on the hinge component side, the center of rotation of the second hinge component on the lid side becomes constant, the mounting accuracy can be reliably achieved, and the lid can be opened and closed smoothly. .

Then, for example, when articles or dust are put in the box body, when the closed lid is swung outward, the convex surface portion of the downward protruding portion of the second hinge forming portion of the lid side frame member becomes
The lid moves along the guide surface of the upper protrusion of the lower frame member on the side of the first hinge component, and more specifically, the lid protrudes outward with the tip of the outward protrusion of the second hinge component as the center. Swings around the center point A of the end surface of the arc-shaped cross section of the tip of the part,
The lid rotates with respect to the lower frame member and is opened to the outside of the box body so that articles and dust can be put into the box body.
At this time, the opening and closing of the lid is very smooth.

Further, after swinging the lid, the lid can be removed by letting out the second hinge forming portion above the opening of the recess, if necessary, so that, for example, during cleaning or repair. The lid can be easily removed and attached, the box can be handled easily, and even if the outer surface plate of the box-constituting panel is damaged, the box can be easily repaired.

As described above, the mechanism for swinging and attaching the outer lid of the box body is simplified, and the lower frame member of the front wall opening portion of the box body and the conventional steel hinge are not used. By making the side frame members at the lower edge of the lid both extruded from a metal such as aluminum or a synthetic resin, weight reduction can be achieved and no rust is generated. Further, since the conventional steel hinge is not used, it is possible to obtain a smooth appearance without unevenness on the outer surface of the attachment portion of the outer opening lid, and improve the aesthetic appearance of the attachment portion of the lid.

Further, in the invention described in claim 2,
To attach the lid to the lower frame member of the front wall opening of the box,
In the concave portion of the first hinge forming portion of the lower frame member, the upward folded-back engaging portion of the second hinge forming portion of the side frame member of the lid lower edge portion,
Just slide it from one end and insert it.
As a result, the lid can be securely attached by a simple assembling work, and the number of attachment steps can be significantly reduced.

In this way, the upward-turning-shaped engaging portion of the second hinge-constituting portion of the lid is fitted into the recess of the first hinge-constituting portion of the lower frame member, and the upward-turning-returning-shaped engaging portion is formed in the recess. By merely engaging with the engaging portion of the upper edge of the opening, the rotation center of the second hinge constituent portion on the lid side becomes constant, the mounting accuracy can be ensured, and the lid can be opened and closed smoothly.

When articles or dust are put into the box body, when the closed lid is swung outward, the lid causes the second hinge constituting portion of the lid side frame member to have an upward folded-back engaging portion. So as to rotate about the upper end of the second hinge forming part, and the tip of the second hinge forming part is guided by the guide surface having an arcuate cross section in the recess of the first hinge forming part, so that the lid of the box body It is opened to the outside so that articles and dust can be put inside the box.

Furthermore, in the invention according to claim 3,
To attach the lid to the lower frame member of the front wall opening of the box,
The second hinge forming portion of the side frame member at the lower edge of the lid may be fitted into the recess of the first hinge forming portion of the lower frame member while sliding from one end thereof. As a result, the lid can be securely attached by a simple assembling work, and the number of attachment steps can be significantly reduced.

Further, the second hinge forming portion of the side frame member of the lid is fitted into the concave portion of the first hinge forming portion of the lower frame member, and the end face having the arcuate cross section at the tip of the outer convex portion is set to the first side. 1 By simply engaging the stepped convex portion on the hinge component side, the center of rotation of the second hinge component on the lid side becomes constant, the mounting accuracy can be reliably achieved, and the lid can be opened and closed smoothly. .

Further, in particular, in the invention according to claim 3, a fitting convex portion is provided near the base portion of the upward convex portion of the first hinge constituent portion, and the fitting convex portion is provided from the base portion of the outer convex portion of the second hinge constituent portion. When the fitting recess reaching the tip of the downward protrusion is provided and the lid is closed, inside the recess of the first hinge component, the outside of the upper protrusion of the first hinge component near the base. Since the direction convex portion is fitted in the fitting concave portion on the side of the second hinge component, the first hinge component on the lower frame member side of the box front wall opening and the second hinge component on the lid side. Since the hooked portion (engagement portion) of is large, the bonding strength is sufficiently large.

When articles or dust are put in the box, if the closed lid is swung outward, the lid rotates with respect to the lower frame member as in the case of the first aspect of the invention. Then, it is opened to the outside of the box, and articles and dust can be put into the box. In addition, opening and closing of the lid at this time is very smooth.

[0021]

Embodiments of the present invention will now be described with reference to the drawings.

In this specification, the inside means the inside of the box body of the case or the dust chute, and the outside means the outside thereof.

1 to 6 show a first embodiment in which the present invention is applied to an article storage case.

First, in FIG. 1, an opening (2) is provided in a front wall (10) of an article storage case (1), and the front wall opening (2) is provided.
The lid (3) is housed in the lid, and the lid (3) is swingably attached to the lower edge of the front wall opening (2) so as to open outward through the hinge (7).

As shown in FIG. 2, the hinge part (7) has a first hinge structure provided on the lower frame member (11) made of an aluminum hollow extruded profile in the front wall opening (2) of the case (1). Part (12) and lid
(3) Side frame member made of aluminum hollow extruded profile at the lower edge (2
It is configured by a combination with the second hinge component (22) provided in 1).

The lid (3) of the case (1) and the side wall panel (9) such as the lower wall panel are both made of a heat insulating panel.
Surface plates (4) and (5) made of aluminum are attached to both inner and outer surfaces of (6), and frame members made of extruded aluminum profile are attached to the side edge portions thereof.

The lower frame member (11) of the front wall opening (2) of the case (1) has a substantially L-shaped cross section in this embodiment, and its vertical portion (11b) is hollow. , And the horizontal part (1
1c) has a substantially U-shaped cross section, and a reinforcing partition wall (11d) inclined at about 45 ° is provided inside the corner. The panel portion including the core material (6) and the surface plates (4) and (5) of the lower wall panel (9) is inserted into the horizontal portion (11c) of the lower frame member (11). Therefore, this lower frame member (11)
Also serves as a side frame member of the lower wall panel (9).

The first hinge forming part (12) of the lower frame member (11) of the case front wall opening (2) is a hollow vertical part of the lower frame member (11).
(11b) Upper protrusion (13) extending above the upper wall (11a)
And an upward convex portion (14) provided inside the upper overhanging portion (13) so as to face each other and having a guide surface (14a) with an arcuate cross section, the first hinge forming portion (12) Is formed with a second hinge component fitting recess (19) having an opening (18) opening upward, and a step-like projection is formed inside the upper protrusion (13) near the tip. (16) is provided, the step-like convex portion (16)
A guide surface (17) having a concave arc-shaped cross section is provided on the lower side.

On the other hand, the lower wall portion (21) of the lid side frame member (21)
The second hinge forming portion (22) is provided at the side frame member substantially in the center of the width of (a).
This second hinge component is provided over the entire length of (21).
(22) is a convex surface part (2
4) The downward projecting portion (23) formed as described above and the end surface (27) projecting outward from the portion of the downward projecting portion (23) near the tip and having an arc-shaped cross section centered on the point A at the tip. It is composed of an outer convex portion (26).

In this embodiment, a large-diameter head (26a) having a substantially circular cross section is provided at the tip of the outer convex portion (26), and the head (26a) is covered with a lid (26a). 3) is used as a shaft when swinging.

The second hinge component (22) has an opening (28) which is open outward, and the base of the outward convex portion (26) from the upper edge of the opening (28). Is provided with a recess (29) for partially fitting the first hinge component having a guide surface having a circular arc cross section.

The opening (18) of the recess (19) of the first hinge component (12) is formed in the lower extension (23) of the second hinge component (22) of the lid side frame member (21). The width is the same as or slightly wider than the width from the tip to the tip of the outward convex portion (26), and the downward protrusion (23) and the outward convex portion of the second hinge component (22) are provided. (26) can be freely inserted and removed through the opening (18) of the recess (19) of the first hinge component (12).

In the above, to attach the lid (3) to the lower frame member (11) of the front wall opening (2) of the article storage case (1), the lid (3) is attached to the front side of the case (1). ) Is arranged, and the second hinge constituting portion (22) thereof is fitted into the concave portion (19) of the first hinge constituting portion (12) of the lower frame member (11) from above, whereby The lid (3) can be easily attached from the front side of the case (1), and the number of attachment steps can be significantly reduced.

Also, the second hinge forming part (22) of the side frame member (21) of the lid (3) is fitted into the recess (19) of the first hinge forming part (12) of the lower frame member (11). Then, the end face (27) having an arcuate cross-section at the tip of the outer protrusion (26) is connected to the step-like protrusion (1) on the first hinge component (11) side.
The second hinge component on the lid (3) side simply engages with 6)
The center of rotation of (22) is constant, the mounting accuracy can be ensured, and the lid (3) can be opened and closed smoothly.

As shown in FIGS. 1 and 2, when the lid (3) is closed in a hanging state, the hinge forming portion of the lid side frame member (21) is formed.
(22) is a recess (1) of the first hinge component (12) of the lower frame member (11).
9) It is fitted inside and the outer convex part of the second hinge component part (22)
(26) The end surface (27) having an arcuate cross-section at the tip is the first hinge constituent part.
It is engaged with the step-like convex portion (16) of (12).

In this case, since the catching portion (engaging portion) between the first hinge constituent portion (12) and the second hinge constituent portion (22) is large, the lid (3) with respect to the lower frame member (11) is The bond strength is very high.

Next, for example, when an article is put in the case (1) and the closed lid (3) is swung outward,
As shown in FIGS. 3 and 4, the convex surface portion (24) of the downward projecting portion (23) of the second hinge forming portion (22) of the side frame member (21) of the lid (3) is attached to the lower frame member (11). ) Moves along the guide surface (14a) having an arcuate cross-section inside the upward convex portion (14) on the first hinge component (12) side, and the lid (3) moves to the second hinge component (22). ) Swings around the center point A of the end face (27) having an arcuate cross section at the tip of the outer convex portion (26), the lid (3) rotates with respect to the lower frame member (11), and the case ( 1)
It is opened to the outside of the case and the article can be placed in the case (1). At this time, opening and closing of the lid (3) is very smooth.

Here, as described above, when the lid (3) is opened to the outside, the left and right edge portions of the lid (3) are stopped so that the lid (3) stops at the angle shown in FIGS. 3 and 4. The latch levers (37) (37) are attached to the front side of the case (1), while the stopper pins (38) (38) are attached to the left and right panel parts of the front wall opening (2) of the case (1). Hook part at the tip of the stop lever (37) (37)
(37a) (37a) is hooked on the stopper pins (38) (38).

Then, for example, when cleaning or repairing,
If necessary, as shown in FIGS. 5 and 6, the second hinge component (22) on the lid (3) side is replaced with the recess (19) of the first hinge component (12) on the case (1) side. At the same time as letting it escape from the opening (18) of the lid (3), attach the hooks (37a) (37a) at the ends of the latch levers (37) (37) on the left and right sides of the lid (3), The lid (3) can be removed by removing it from the pins (38) (38). In this way, the lid (3) can be removed or attached very easily, so that the case (1) is easy to handle.

As described above, the outer lid of the case (1) is opened.
The swinging and mounting mechanism of (3) is simplified, and the lower frame member (11) of the front wall opening (2) of the case (1) and the side frame member (21) of the lower edge of the lid (3) are installed. Since both are made of extruded aluminum, the weight can be reduced and rust does not occur.
Further, the outer surface of the case (1) at the mounting portion of the outer lid (3) has no unevenness, and a smooth appearance can be obtained, and the aesthetic appearance of the mounting portion of the lid (3) can be improved.

Next, FIGS. 7 to 9 show a second embodiment of the present invention. Here, the difference from the case of the first embodiment is as follows.

That is, as shown in FIG. 7, the case (1)
Hollow vertical part (31b) of lower frame member (31) of front wall opening (2)
The upper wall portion (31a) is provided with a first hinge component (32) having a concave portion (33) opening outward, and the upper wall portion (34) of the concave portion (33) is provided.
An engaging portion (35) extending downward is provided on the outer edge of the
A guide surface (36) having an arcuate transverse cross section is provided in the (33) from the lower edge of the opening to the base of the upper wall section (34). Here, the lower frame member (31) of the case front wall opening (2) has a substantially L-shaped cross section as in the case of the first embodiment, and its vertical portion (31
b) is hollow, and the horizontal part (31c) has a substantially U-shaped cross section, and a reinforcing partition wall (31d) inclined at approximately 45 ° is provided inside the corner part. Material (3
1) also serves as the side frame member of the lower wall panel (9).

On the other hand, on the outer edge of the lower wall portion (41a) of the side frame member (41) at the lower edge portion of the lid (3), a bent portion (43) having a substantially arcuate cross section bent obliquely inward downward. And a second hinge forming part (42) having a folded-back engaging part (44) which is folded back upward from its tip. Here, the bent portion (43) having a substantially arcuate cross-section has the first hinge component (3) of the lower frame member (31).
It has substantially the same radius of curvature as the guide surface (36) having an arcuate cross section in 2).

Further, on the inner edge of the lower wall portion (41a) of the side frame member (41) at the lower edge portion of the lid (3), a downward convex portion (4
0) is provided.

Then, the second hinge component (4
2) The upwardly folded-back engaging portion (44) is recessed in the lower frame member (31) (3
When the lid (3) is closed by being fitted into the inside of the recess (3), the upward-folded engagement portion (44) is engaged with the engagement portion (35) at the upper edge of the opening of the recess (33). ing. Further, the tip of the downward convex portion (40) as the stopper is the lower edge of the front wall opening (2) of the case (1), that is, the first hinge forming portion (3) of the lower frame member (31).
2) It is brought into contact with the upper surface of the upper wall portion (34).

On the lower frame member (31) of the case (1), the lid (3)
To attach the lower hinge member (31) to the first hinge component (3
The second side frame member (41) of the lower edge portion of the lid (3) is placed in the recess (33) of the second portion (2).
The upwardly folded-back engaging portion (44) of the hinge forming portion (42) may be fitted in while sliding from one end thereof. As a result, the lid (3) can be securely attached by a simple assembling work, and the number of attachment steps can be greatly reduced.

Further, as described above, the upwardly folded-back engaging portion (44) of the second hinge forming portion (42) of the lid (3) is formed into the concave portion of the first hinge forming portion (32) of the lower frame member (31). The second hinge on the side of the lid (3) only needs to be fitted in the (33), and the upwardly folded-back engaging portion (44) is engaged with the engaging portion (35) at the upper edge of the opening of the recess (33). The component (42) has a constant center of rotation, and the mounting accuracy can be ensured, and the lid (3) can be opened and closed smoothly.

Then, when an article is put in the case (1), the lid (3) is swung outward by swinging the closed lid (3).
However, as shown in FIG. 8 and FIG. 9, the lid side frame member (41) is configured to rotate about the upper end of the upward folding back engaging part (44) of the tip of the second hinge forming part (21). And the tip of the second hinge component (42) is a recess of the first hinge component (32).
Guided by the guide surface (36) with a circular cross section in (33), the lid
The item (3) is opened to the outside of the case (1) so that the article can be put in the case (1).

Here, as described above, when the lid (3) is opened to the outside, the left and right side edges of the lid (3) are stopped so that the lid (3) stops at the angle shown in FIGS. 8 and 9. The latch levers (37) (37) are attached to the front side of the case (1), while the stopper pins (38) (38) are attached to the left and right panel parts of the front wall opening (2) of the case (1). The stopper pins (38) (38) are fitted into the long holes (39) (39) formed in the stopper levers (37) (37) in the longitudinal direction, respectively, and when the lid (3) is most opened outward, Stopper pins (38) (38) can be hooked on the tip ends of the latch levers (37) (37), respectively.

In the second embodiment, unlike the case of the first embodiment, the lid (3) does not come off from the front wall (10) of the case (1).

As described above, according to the second embodiment, as in the case of the first embodiment, the swinging and mounting mechanism of the outer lid (3) of the case (1) is simplified. Since the lower frame member (31) of the front wall opening (2) of the case (1) and the side frame member (41) of the lower edge of the lid (3) are both made of aluminum hollow extruded profile, weight saving is achieved. It can be achieved and there is no rust. Further, it is possible to obtain a smooth appearance without unevenness on the outer surface of the mounting portion of the outer lid (3), and improve the aesthetic appearance of the mounting portion of the lid (3).

Next, FIGS. 10 and 11 show a third embodiment of the present invention. Here, the point different from the case of the first embodiment is that the lid (3) is designed so as not to come off from the case (1).

That is, in the third embodiment, as shown in FIG. 10, the lower frame member (1) of the front wall opening (2) of the case (1) is
The width of the opening (18) opened upwardly of the recess (19) of the first hinge component (12) provided in (1) is narrower than the width of the tip of the second hinge component (22). The lid (3) is therefore attached to the lower frame member (11) of the front wall opening (2) of the case (1).
I can't miss it.

This is because in the third embodiment, the outward projecting portion is provided at the upper end of the upward convex portion (14) on the side of the first hinge component (12).
(14b) is provided, and the width of the opening (18) of the recess (19) is made narrower than the width of the tip of the second hinge component (22).

According to the third embodiment, the case
For fitting a second hinge component having an opening (18) opening upward in the first hinge component (12) of the lower frame member (11) of the front wall aperture (2) of (1) The concave portion (19) is formed, the fitting convex portion (15) is provided near the base of the upward convex portion (14), and the step convex portion (15) is provided inside the portion of the upper overhang portion (13) near the tip. 16) is provided, and a guide surface (17) having a concave arc-shaped cross section is provided below the step-like convex portion (16).

On the other hand, the second portion of the side frame member (21) at the lower edge of the lid (3)
The hinge forming part (22) extends downward and the inner side surface is formed as a convex surface part (24) having an arcuate cross-section. Point A at the tip
The outer convex portion (2) having an end face (27) with an arcuate cross section centered at
6) and the second hinge component portion (22) is provided with a recess (29) for partially fitting the first hinge component portion having an opening (28) opening outward. A fitting concave portion (25) is provided which extends from the base portion of the outward convex portion (26) to the tip portion (23a) of the downward projecting portion (23).

When the lid (3) housed in the front wall opening (2) of the case (1) is closed as shown in FIG. 10, the inside of the recess (19) of the first hinge component (12) is shown. In, the convex surface portion (24) of the downward protrusion (23) of the second hinge component (22) is an upward convex portion.
The guide surface (14a) having an arcuate cross section of (14) is brought into contact with the guide surface (14a), and the fitting protrusion (15) near the base of the upper overhanging portion (13) has a second hinge forming portion (22). ) Side fitting recess (25), and the end face (2
7) is engaged with the step-like convex portion (16) on the side of the first hinge component (12), the first hinge component (12) on the lower frame member (11) side and the lid (3 Since the hooking portion (engaging portion) with the second hinge constituent portion (22) on the) side is large, the coupling strength is sufficiently large.

Then, when an article is put in the case (1), the closed lid (3) is swung outward, and the lid (3) is moved to the same position as in the first embodiment. 8 and FIG.
Rotate with respect to the lower frame member (11) to
It is open to the outside of (1) and allows items to be placed inside the case (1). The opening and closing of the lid (3) at this time is very smooth.

The lower frame member (1) of the front wall opening (2) of the case (1)
In order to attach the lid (3) to 1), as in the case of the second embodiment, the concave portion of the first hinge forming portion (12) of the lower frame member (11).
The second hinge forming part (22) of the side frame member (21) at the lower edge of the lid (3) may be fitted into the (19) while sliding from one end thereof, whereby the lid (3) Can be securely mounted by a simple assembling work, and the number of mounting steps can be significantly reduced.

12 to 16 show a fourth embodiment of the present invention. Here, the point different from the case of the first embodiment is that the present invention is applied to the dust chute (51).

First, in FIGS. 12 and 13, an opening (2) is provided in the front wall (10) of the dust chute (51), and a lid (3) is housed in the front wall opening (2). A lid (3) is swingably attached to the lower edge of the front wall opening (2) so as to open outward.

As shown in FIG. 13, the lid (3) includes a first hinge component (12) provided in the lower frame member (52) of the front wall opening (2) of the dust chute (51), Side frame members on the lower edge of the lid (3)
It is attached to the dust chute (51) via a hinge part (7) consisting of a second hinge constituting part (22) provided in (21).

The lower frame member (52) made of aluminum extruded profile in the front wall opening (2) of the dust chute (51) is substantially U-shaped in cross section in this embodiment. (Five
2) The core material that constitutes the front wall (10) of the dust chute (51)
The panel part consisting of (6) and the surface plates (4) and (5) is inserted from below.

The structure of the swinging / attaching mechanism of the outer lid (3) of the dust chute (51), that is, the hinge part (7) is almost the same as that of the first embodiment. The method of attaching the lid (3) to the lower frame member (52) of the front wall opening (2) of the dust chute (51) is also the same as in the case of the first embodiment.

A handle (54), which is substantially U-shaped when viewed from above, is attached to the front upper portion of the lid (3) of the dust chute (51).

As shown in FIGS. 12 and 13, the lid is
When the (3) is closed in the hanging state, the hinge forming part (22) of the lid side frame member (21) is connected to the front wall opening part of the dust chute (51).
(2) Recessed portion (19) of the first hinge forming portion (12) of the lower frame member (52)
It is fitted inside and the outer convex portion (2
6) The end face (27) with a circular arc-shaped cross section at the tip is the first hinge component (1
It is engaged with the stepped convex portion (16) of 2).

Next, for example, the dust chute (51)
When dust is put in the cover (3), if the closed lid (3) is swung outward, as shown in FIGS. 14 and 15, the second hinge component (22) of the lid (3) side frame member (21) is ), The convex surface portion (24) of the downward projecting portion (23) is an upward convex portion on the first hinge component (12) side of the lower frame member (52) of the front wall opening (2) of the dust chute (51). Division (14)
The lid (3) moves along the guide surface (14a) having an arcuate cross-section inside and the outer convex portion (26) of the second hinge component (22) moves along the lid (3).
The tip (3) is swung around the center point A of the end face (27) having an arcuate cross section, the lid (3) is rotated with respect to the lower frame member (52), and is opened to the outside of the dust chute (51). Dust chute (5
1) Can be put inside. The opening and closing of the lid (3) at this time is very smooth.

Then, as described above, when the lid (3) is opened to the outside, the lid (3) is stopped at the angle shown in FIGS. 14 and 15, so that the left and right edges of the lid (3) are The fan-shaped plate-like retaining members (53) (53) are attached from the side, while the stopper engagement portions (shown in the figure) are attached to the inner surfaces of the left and right side walls of the front wall opening (2) of the dust chute (51). (Omitted) is provided, and a latching member
(53) The folded tip of (53) (not shown) is a dust chute.
It is engaged with the stopper engaging portion on the (51) side.

If necessary, for example, when cleaning or repairing, as shown in FIG. 16, the second hinge forming part (22) on the lid (3) side is replaced with the second hinge forming part (22) on the dust chute (51) side. 1 At the same time as making it escape from the opening (18) of the concave portion (19) of the hinge component (12), at the same time as seen from the left and right side surfaces of the lid (3), fan-shaped plate-like hooking members (53) (53) The lid (3) can be removed by removing the folded front end portion (not shown) from the stopper engagement portion on the dust chute (51) side. In this way, the lid (3) can be removed or attached very easily, so that the dust chute (51) can be handled easily.

Further, according to the fifth embodiment, the swinging and mounting mechanism of the outer opening lid (3) of the dust chute (51) is simplified, and the front wall opening ( 2) The lower frame member (52) is made of extruded aluminum, and the lid
(3) Since the side frame member (41) at the lower edge portion is made of an aluminum hollow extruded shape member, it is possible to reduce the weight and to prevent rust. Further, it is possible to obtain a smooth appearance without unevenness on the outer surface of the mounting portion of the outer lid (3), and improve the aesthetic appearance of the mounting portion of the lid (3).

Next, FIGS. 17 and 18 show a fifth embodiment of the present invention. In this fifth embodiment,
As in the case of the fourth embodiment, the present invention is applied to the dust chute (51), but the structure of the swing and attachment mechanism of the outer lid (3) is the same as that of the second embodiment. Is almost the same.

That is, as shown in FIG. 17, the lid (3)
Is the lower frame member (6) of the front wall opening (2) of the dust chute (51).
A hinge part (7) including a first hinge component (12) provided in (1) and a second hinge component (22) provided in a side frame member (21) at the lower edge of the lid (3). ) Attached to the dust chute (51).

The lower frame member (61) made of aluminum extruded profile in the front wall opening (2) of the dust chute (51) has a substantially inverted U-shaped cross section in this embodiment. (6
1) The core material that constitutes the front wall (10) of the dust chute (51)
The panel part consisting of (6) and the surface plates (4) and (5) is inserted from below.

The outer cover (3) of the dust chute (51)
The structure of the swinging / attaching mechanism, that is, the hinge portion (7) is almost the same as that of the second embodiment. Dust chute (5
The method of attaching the lid (3) to the lower frame member (61) of the front wall opening (2) of 1) is also the same as in the case of the second embodiment.

When the lid (3) is closed,
The second hinge component (42) of (3) has the upward-turning folded-up engaging portion (4
4) is a recess (33) of the first hinge component (32) of the lower frame member (61)
It is fitted in the inside and the upward folded-back engaging part (44) is recessed.
(33) Engage with the engaging portion (35) at the upper edge of the opening. Further, the tip of the downward convex portion (40) as the stopper is the lower edge of the front wall opening (2) of the dust chute (51), that is, the upper wall of the first hinge forming portion (32) of the lower frame member (61). It is brought into contact with the upper surface of the portion (34).

When dust is put in the dust chute (51), the closed lid (3) is swung outward, and the lid (3) is closed as shown in FIGS. 14 and 18. The side frame member (41) is configured to rotate about the upper end of the upward folding-back engaging portion (44) at the tip of the second hinge forming portion (21), and the second hinge forming portion (42). The tip is the first hinge component
The lid (3) is opened to the outside of the dust chute (51) by being guided by the guide surface (36) having an arc cross section in the recess (33) of the (32), and the dust is put into the dust chute (51). It can be put in.

In the fifth embodiment, unlike the case of the fourth embodiment, the lid (3) is attached to the front wall of the dust chute (51).
It is designed so that it does not come off from (10).

Next, FIGS. 19 and 20 show a sixth embodiment of the present invention. In the sixth embodiment, as in the case of the fourth embodiment, the present invention is applied to the dust chute.
It is applied to (51), and its configuration is almost the same as that of the third embodiment.

That is, in the sixth embodiment, as shown in FIG. 19, the first hinge component (12) provided in the lower frame member (52) of the front wall opening (2) of the dust chute (51). ) Recess (1
The width of the opening (18) opening upwards of 9) is made narrower than the width of the tip of the second hinge forming part (22), and therefore the lid (3) has the dust chute (51). Alternatively, the dust chute (51) does not come off from the lower frame member (52) of the front wall opening (2).

This is because in the sixth embodiment, the outward projecting portion is provided at the upper end of the upward convex portion (14) on the side of the first hinge component (12).
(14b) is provided, and the width of the opening (18) of the recess (19) is made narrower than the width of the tip of the second hinge component (22).

According to the sixth embodiment, the first hinge component (12) of the lower frame member (52) of the front wall opening (2) of the dust chute (51) is opened upward. Opening (18)
A second hinge component fitting recess (19) is formed, and a fitting protrusion (15) is provided near the base of the upward convex (14) and close to the tip of the upward convex (14). A stepped convex portion (16) is provided inside the portion, and a guide surface (17) having a concave arc-shaped cross section is provided below the stepped convex portion (16).

On the other hand, the second edge of the side frame member (21) at the lower edge of the lid (3)
The hinge forming part (22) extends downward and the inner side surface is formed as a convex surface part (24) having an arcuate cross-section. Point A at the tip
The outer convex portion (2) having an end face (27) with an arcuate cross section centered at
6) and the second hinge component portion (22) is provided with a recess (29) for partially fitting the first hinge component portion having an opening (28) opening outward. A fitting concave portion (25) is provided which extends from the base portion of the outward convex portion (26) to the tip portion (23a) of the downward projecting portion (23).

As shown in FIGS. 12 and 19, when the lid (3) housed in the front wall opening (2) of the dust chute (51) is closed, the recess of the first hinge component (12) is formed. Inside the (19), the convex surface portion (24) of the downward projecting portion (23) of the second hinge component portion (22) is a guide surface (14a) having an upward convex portion (14) with an arcuate cross section.
Abutting along the upper bulge (1
The fitting convex part (15) near the base of 3) is fitted into the fitting concave part (25) on the second hinge constituting part (22) side, and the tip of the outer convex part (26) has an arc-shaped cross section. Since the end surface (27) is engaged with the step-like convex portion (16) on the first hinge component (12) side, the lower frame member (5
The first hinge forming part (12) on the 2) side and the second hinge forming part (22) on the lid (3) side have a large catching part (engaging part), so that the coupling strength is sufficiently large. .

Then, when dust is put in the dust chute (51), the closed lid (3) is swung outward, and the lid (3) is moved in the same manner as in the fourth embodiment. 14
Further, as shown in FIG. 20, the lower frame member (52) is rotated and opened to the outside of the dust chute (51) so that dust can be put into the dust chute (51). The opening and closing of the lid (3) at this time is very smooth.

According to the fifth and sixth embodiments, as in the case of the fourth embodiment, the dust chute (5
The swinging and mounting mechanism of the outer lid (3) of 1) is simplified, and the lower frame member (5) of the front wall opening (2) of the dust chute (51) (5)
2) (61) is made of extruded aluminum profile and has a lid
(3) Since the side frame members (41) and (21) at the lower edge are made of aluminum hollow extruded shape, the weight can be reduced and rust does not occur. Further, it is possible to obtain a smooth appearance without unevenness on the outer surface of the mounting portion of the outer lid (3), and improve the aesthetic appearance of the mounting portion of the lid (3).

Since the other points of the second to sixth embodiments are similar to those of the first embodiment, the same parts are designated by the same reference numerals in the drawings.

In the above embodiment, the lower frame members (11) and (31) of the front wall opening (2) of the case (1) or the dust chute (51).
(52) (61) and the side frame members (21) (41) of the lid (3) are usually made of aluminum extruded shape, but not limited to this, extruded shape made of other metal or hard synthetic resin. May be made by.

The first to third embodiments described above apply the present invention to an article storage case, and the fourth to sixth embodiments apply the present invention to a dust chute.
The present invention is similarly applied to other boxes such as dust boxes.

[0089]

As described above, the device for opening / closing the outer lid of the box according to the present invention can be used to open the box such as an article storage case or a dust chute according to any one of the first to third aspects. The lid swinging and mounting mechanism is simplified, the conventional steel hinges are not required to be attached at all, the number of steps for attaching the outer lid can be reduced, and the installation work does not require any labor.
The manufacturing cost is low and the number of parts is small, so it is easy to manage, and when the lid is fully closed, you can get a smooth appearance with no unevenness on the outer surface of the mounting part of the outer opening lid,
Further, rust is not generated and the weight can be reduced.

According to the first aspect of the present invention, the opening of the fitting recess of the first hinge forming portion of the lower frame member of the front wall opening of the box is the first side frame member of the lid. 2 The width from the tip of the downward protrusion of the second hinge component to the tip of the outward protrusion is the same as or slightly wider than the width of the second protrusion and the downward protrusion and outward protrusion of the second hinge component. Since the portion is freely inserted and removed from the opening of the fitting recess of the first hinge component, in order to attach the lid to the lower frame member of the front wall opening of the box, the front side of the box should be attached. , The lid is arranged, and the second hinge constituting portion of the lid is fitted into the concave portion of the first hinge constituting portion of the lower frame member from above, whereby the lid can be easily attached from the front side of the box body. Therefore, the number of mounting steps can be significantly reduced.

Further, the second hinge forming portion of the side frame member of the lid is fitted into the concave portion of the first hinge forming portion of the lower frame member, and the end face having the arcuate cross section at the tip of the outer convex portion is set to the first side. 1 By simply engaging the stepped convex portion on the hinge component side, the center of rotation of the second hinge component on the lid side becomes constant, the mounting accuracy can be reliably achieved, and the lid can be opened and closed smoothly. .

Therefore, for example, when articles or dust are put in the box body, when the closed lid is swung outward, the lid swings about the tip of the outward convex portion of the second hinge component. Then, it can be opened to the outside of the box, and articles and dust can be put into the box, and the opening and closing of the lid at this time is very smooth.

After swinging the lid, the lid can be removed by allowing the second hinge forming portion to escape above the opening of the recess, if necessary. For example, during cleaning or repair. The lid can be easily removed and attached, the box can be handled easily, and even if the outer surface plate of the box-constituting panel is damaged, the box can be easily repaired.

According to the second aspect of the invention, in order to attach the lid to the lower frame member of the front wall opening of the box, the lower edge of the lid is provided in the recess of the first hinge forming portion of the lower frame member. It is sufficient to fit the upwardly folded-back engaging portion of the second hinge forming portion of the side frame member of the portion while sliding it from one end thereof, thereby securely attaching the lid by a simple assembling operation. It is possible to significantly reduce the number of installation steps.

Further, as described above, the upward folding-back engaging portion of the second hinge forming portion of the lid is fitted into the concave portion of the first hinge forming portion of the lower frame member, and the upward folding-back engaging portion is formed in the concave portion. By merely engaging with the engaging portion of the upper edge of the opening, the rotation center of the second hinge constituent portion on the lid side becomes constant, the mounting accuracy can be ensured, and the lid can be opened and closed smoothly.

When articles or dust are put in the box body, when the closed lid is swung outward, the lid is centered on the upper end portion of the upward folded-back engaging portion at the tip of the second hinge forming portion. As it rotates, it is opened to the outside of the box,
It has an effect that articles and dust can be put in the box body, and the opening and closing of the lid at this time is very smooth.

According to the third aspect of the present invention, in order to attach the lid to the lower frame member of the front wall opening of the box, the lower edge of the lid is provided in the recess of the first hinge forming portion of the lower frame member. It suffices to fit the second hinge forming part of the side frame member of the part while sliding it from one end of the side frame member. This makes it possible to securely attach the lid by a simple assembling work, which greatly reduces the number of installation steps. Can be reduced to

Further, the second hinge forming portion of the lid side frame member is
The lower frame member is fitted into the concave portion of the first hinge forming portion, and the end face having the arcuate cross section at the tip of the outer protruding portion is simply engaged with the stepped convex portion on the side of the first hinge forming portion. Since the second hinge forming portion has a constant rotation center, the mounting accuracy can be reliably obtained, and the lid can be opened and closed smoothly.

Further, a fitting convex portion is provided near the base of the upward convex portion of the first hinge constituent portion, and the fitting convex portion is fitted from the base of the outward convex portion of the second hinge constituent portion to the tip of the downward projecting portion. When the fitting recess is provided and the lid is closed,
In the recess of the first hinge component, the fitting protrusion near the base of the upward extension of the first hinge component is fitted into the fitting recess on the side of the second hinge component. Since the catching portion (engaging portion) between the first hinge constituent portion on the side and the second hinge constituent portion on the lid side is large, there is an effect that the coupling strength is sufficiently large.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a case, showing a state in which a lid is closed.

FIG. 2 is an enlarged vertical sectional view of a lid mounting portion of the case of the first embodiment of the present invention, showing a state in which the lid is closed.

FIG. 3 is a schematic perspective view of the case, showing a state in which the lid is opened to the outside.

FIG. 4 is an enlarged vertical sectional view of a lid mounting portion of the case of the first embodiment of the present invention, showing a state in which the lid is open to the outside.

FIG. 5 is a schematic perspective view of a case, showing a state in which a lid is removed from the case.

FIG. 6 is an enlarged vertical cross-sectional view showing a state in which a lid is removed from the case.

FIG. 7 is an enlarged vertical sectional view of a lid mounting portion of the case of the second embodiment of the present invention, showing a state in which the lid is closed.

FIG. 8 is a schematic perspective view of the case, showing a state in which the lid is opened to the outside.

FIG. 9 is an enlarged vertical sectional view of the same, showing a state in which the lid is opened to the outside.

FIG. 10 is an enlarged vertical sectional view of a lid mounting portion of the case of the third embodiment of the present invention, showing a state in which the lid is closed.

FIG. 11 is an enlarged vertical sectional view of the same, showing a state in which the lid is opened to the outside.

FIG. 12 is a schematic perspective view of a dust chute, showing a state in which the lid is closed.

FIG. 13 is an enlarged vertical sectional view of a lid mounting portion of the dust chute of the fourth embodiment of the present invention, showing a state in which the lid is closed.

FIG. 14 is a schematic perspective view of the dust chute, showing a state in which the lid is open to the outside.

FIG. 15 is an enlarged vertical sectional view of a lid mounting portion of the dust chute of the fourth embodiment of the present invention, showing a state in which the lid is opened to the outside.

FIG. 16 is an enlarged vertical cross-sectional view showing a state in which a lid is removed from a dust chute.

FIG. 17 is an enlarged vertical sectional view of a lid mounting portion of the dust chute of the fifth embodiment of the present invention, showing a state in which the lid is closed.

FIG. 18 is an enlarged vertical sectional view of the same, showing a state in which the lid is opened to the outside.

FIG. 19 is an enlarged vertical sectional view of a lid mounting portion of the dust chute of the sixth embodiment of the present invention, showing a state in which the lid is closed.

FIG. 20 is an enlarged vertical sectional view of the same, showing a state in which the lid is opened to the outside.

[Explanation of symbols]

 1 Item Storage Case (Box) 2 Opening 3 Lid 7 Hinge Part 10 Front Wall 11 Lower Frame Member 11a Upper Wall Part 12 First Hinge Constituent 13 Upper Overhanging Part 14 Upward Convex Part 14a Guide Surface with Arc-Shaped Section 15 Fitting convex part 16 Step convex part 17 Guide surface having concave arcuate cross section 18 Opening part 19 Second hinge constituent part fitting concave part 21 Lid side frame member 22 Second hinge constituent part 23 Lower overhanging part 23a Tip part 24 Convex surface section with arcuate section 25 Fitting concave section 26 Outer convex section 27 End surface with arcuate section 28 Opening section 29 First hinge constituent section partial fitting concave section 31 Lower frame member 32 First hinge constituent section 33 Recessed section 34 Upper wall part 35 Engagement part 36 Guide surface with an arc-shaped cross section 41 Lid side frame member 42 Second hinge constituent part 43 Bent part with a substantially arc-shaped cross-section 44 Folded engagement part 51 Dust chute (box) 52 Lower frame member 52a Upper wall 61 Lower frame member

Claims (3)

[Claims] 1. A first hinge component (12) is provided on a lower frame member (11) (52) of a front wall opening (2) of a box (1) (51) such as an article storage case or a dust chute. Opened in the front wall of the box (2)
A second hinge component (22) is provided on the side frame member (21) at the lower edge of the lid (3) housed in the lower wall member (1) of the front wall opening (2).
1) The first hinge component (12) of (52) is the lower frame member (11) (52)
Upper bulge (13) extending above the upper wall (11a) (52a)
And an upward convex portion (14) provided inside the upper overhanging portion (13) so as to face each other and having a guide surface (14a) with an arcuate cross section, the first hinge forming portion (12) Is formed with a second hinge component fitting recess (19) having an opening (18) opening upward, and a step-like projection is formed inside the upper protrusion (13) near the tip. (16) is provided, the step-like convex portion (16)
A guide surface (17) having a concave arc-shaped cross section is provided on the lower side, and the second hinge forming portion (22) of the lid-side frame member (21) extends downward and has a convex surface portion whose inner surface has an arc-shaped cross section ( (24) Downward extension (23)
And an outward convex portion (26) projecting outward from a portion of the downward projecting portion (23) near the tip and having an end surface (27) having an arc-shaped cross section at the tip, the second hinge component The (22) is provided with a recess (29) for partially fitting the first hinge component having an opening (28) opening outward, and the recess of the first hinge component (12) ( The opening (18) of 19) is the second hinge component.
It has a width that is the same as or slightly wider than the width from the tip of the downward protrusion (23) of (22) to the tip of the outward convex portion (26), and the width of the second hinge component (22) is The downward bulge (23) and the outward protrusion (2
6) is configured to be freely inserted and removed through the opening (18) of the recess (19) of the first hinge component (12), and the lower frame member (11) (52) of the box front wall opening (2). In the recess (19) of the first hinge component (12) of
The second hinge constituting portion (22) of the side frame member (21) at the lower edge of the lid (3) is fitted to the lower protruding portion of the second hinge constituting portion (22).
The convex portion (24) of (23) is brought into contact along the guide surface (14a) of the upward convex portion (14) having an arcuate cross section, and the outer convex portion (26) has an arcuate cross section. End surface (27) of the lower hinge member (11) (52) of the box front wall opening (2) is engaged with the stepped convex portion (16) on the first hinge component (12) side. When the cover lid (3) swings outward, the second hinge component (2) of the lid side frame member (21) is
The convex surface portion (24) of the downward protruding portion (23) of 2) is the first hinge constituent portion.
The lid (3) moves along the guide surface (14a) of the upward convex portion (14) of the (12) and the outer convex portion of the second hinge forming portion (22) moves.
The second hinge forming part (22) of the lid side frame member (21) is arranged so as to swing about the tip of the (26) and, if necessary, after the lid (3) swings. By making it escape above the opening (18) of the recess (19) of the component (12), the lid
(3) is an opening / closing device for the outer lid of the box, which is removable. 2. An upper side of a front edge of a lower frame member (31) (61) of a front wall opening (2) of a box body (1) (51) such as an article storage case or a dust chute, and an outer side. First with open recess (33)
A hinge component (32) is provided, and an engaging portion (35) extending downward is provided at the outer edge of the upper wall portion (34) of the recess (33).
A guide surface (36) with an arcuate cross-section that extends from the lower edge of the opening to the base of the upper wall portion (34) is provided in the inside of the box, and the lid (3) that is housed in the box front wall opening (2) Outside the lower end of the side frame member (41) at the lower edge,
Bent part (43) with a substantially arcuate cross section bent obliquely inward downward
And a second hinge-constituting part (42) having a folded-back engaging part (44) that is folded back upward from the tip of the second hinge-constituting part (42), and the second hinge-constituting part (42) of the lid (3). The upward folded-back engaging portion (44) is fitted into the recess (33) of the first hinge forming portion (32) of the lower frame member (31) (61), and the upward folded-back engaging portion (4).
4) is engaged with the engaging portion (35) at the upper edge of the opening of the recess (33), and the lid (3) is attached to the lower frame member (31) (61) of the box front wall opening (2). The second side of the lid side frame member (41) is rotated when the
An opening / closing device for an outer lid of a box body, wherein the tip of the hinge component (42) is guided by a guide surface (36) having an arcuate cross section in the recess (33). 3. A first hinge component (12) is provided on a lower frame member (11) (52) of a front wall opening (2) of a box (1) (51) such as an article storage case or a dust chute. Opened in the front wall of the box (2)
A second hinge component (22) is provided on the side frame member (21) at the lower edge of the lid (3) housed in the lower wall member (1) of the front wall opening (2).
1) The first hinge component (12) of (52) is the lower frame member (11) (52)
Upper bulge (13) extending above the upper wall (11a) (52a)
And an upward convex portion (14) provided inside the upper overhanging portion (13) so as to face each other and having a guide surface (14a) with an arcuate cross section, the first hinge forming portion (12) A second hinge component fitting recess (19) having an opening (18) opening upward is formed in the upper part, and a fitting projection (15) is provided near the base of the upward projection (14). Provided and upward convex (14)
A step-like convex portion (16) is provided inside the portion near the tip of the, and a guide surface (17) having a concave arc cross section is provided below the step-like convex portion (16), and the lid side frame member (21) The second hinge forming part (22) extends downward and the inner surface is a convex surface part (24) having an arcuate cross section, and a part of the lower protruding part (23) near the tip. A second hinge component (2) which is formed by an outer protrusion (26) protruding outward from the portion and having an end face (27) having an arc-shaped cross section at its tip.
1) having an opening (28) opening outward in 2)
A hinge (29) for partially fitting the hinge component is provided, and the tip (2) of the downward protrusion (23) is lower than the base of the outward protrusion (26).
In the recess (19) of the first hinge forming part (12) of the lower frame member (11) (52) of the box front wall opening (2), the fitting recess (25) reaching 3a) is provided. The second hinge component (22) of the side frame member (21) at the lower edge of the lid (3) is fitted to the second hinge component (2).
The convex surface portion (24) of the downward protruding portion (23) of (2) is brought into contact with the upward protruding portion (14) along the guide surface (14a) having an arc-shaped cross section, and the upward protruding portion (13) is ) Of the fitting convex portion (15) near the base portion is fitted into the fitting concave portion (25) on the side of the second hinge component (22), and the tip end of the outer convex portion (26) has an arcuate cross section. (27)
It is engaged with the stepped convex portion (16) on the first hinge component (12) side, and covers the lower frame member (11) (52) of the box front wall opening (2).
When the (3) swings outward, the convex surface portion (24) of the downward projecting portion (23) of the second hinge forming portion (22) of the lid-side frame member (21) causes the lower frame member (11) to move. (52) Moves along the guide surface (14a) of the upward convex portion (14), and the lid (3) is centered on the tip of the outward convex portion (26) of the second hinge component (22). A device for opening and closing the outer lid of the box, which is designed to swing.