JPS628391A - Door device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a door device for a front panel of electrical and electronic equipment, etc., and particularly to a door device equipped with a destruction prevention mechanism.

[Background of the invention]

Conventionally, as a door device equipped with a destruction prevention mechanism,
The one described in Japanese Patent No. 8-90503 is known. This door device is designed to prevent each member from being destroyed by disengaging the fulcrum of the door when excessive force is applied to the door.

This type of door device has the effect of preventing destruction, but depending on the shape of the area around the door, the door may come off and hit the exterior and cause damage, or the door itself may fall off the front panel body. No consideration was given to the possibility that this could occur.

[Purpose of the invention]

The present invention improves the problems of the prior art as described above, and provides a door device in which the detached door does not damage the surrounding external appearance and the door does not fall from the front panel main body. This is the purpose.

[Summary of the Invention] A door device according to the present invention has a structure in which a front panel main body has a first fulcrum and a stopper.

In a door device that makes it possible to open and close the door by mounting the door so that it can rotate about the first fulcrum within a predetermined angular range regulated by the stopper, a pair of left and right arms are provided. An arm member having second fulcrums on these arm portions is rotatable on the front surface of the front panel body within a predetermined angular range regulated by a stopper, about the first fulcrum. Attach the door to the arm member,
Mounted rotatably about the second fulcrum 1 During normal door opening/closing operations, the arm member and the door fit together and operate as one, and when the door is in the open state, the arm member and the door are attached near the tip of the door. A fitting means is provided which is configured to disengage the fitting when a force exceeding a limit is applied in the opening direction.

More details are as follows.

The door and the arm member supporting the door are separated, and the door is configured to be removed at the tip of the arm member, so that even if the door comes off, it will not hit other design parts. In addition, a fitting means consisting of a combination of a convex part and a concave part is provided on the arm member and the arm part of the door so that the door will come off only when a force exceeding a certain limit is applied to the tip of the door. The door is configured to rotate around a second fulcrum provided on the arm member so that the detached door hangs down without falling. moreover,
After the door is removed, the arm member is locked with a leaf spring so that the arm member does not become unstable.

[Embodiments of the invention]

The present invention will be explained below using an embodiment applied to a stationary VTR.

1 and 2 show essential parts of a stationary VTR equipped with a door device according to an embodiment of the present invention. FIG. 1 is a perspective view of the main parts with the door open; Figure 2 is a perspective view of the main parts with the door closed, Figure 3 is an exploded perspective view of Figure 1 with the door removed, Figure 4 is a view in the direction of the ■ arrow in Figure 1,
5 is a view in the direction of the ■ arrow in FIG. 1, FIG. 6 is a detailed view showing the deformed state when the arm portion in FIG. 5 is unfitted,
Fig. 7 is a view from the ■ arrow in Fig. 1, Fig. 8 is a detailed view showing the state in which the door is removed in Fig. 7, and Fig. 9 is a perspective view showing details of the vicinity of the leaf spring in Fig. 7. It is a diagram.

The outline of this door device will be explained mainly using FIG. 3.

That is, the first fulcrums 1d, ld' and the stoppers Ic, I
C' on the front surface of the front panel main body 1.
The stoppers lc, lc are centered around the fulcrums 1d, ld' of
The door can be opened and closed by mounting the door so that it can rotate within a predetermined angle range regulated by '. Holes 3e, 3e' related to the second fulcrum are provided in the arm portions 3a, 3b of
The arm member 3 provided with is attached to the front of the front panel main body 1,
Centering around the first fulcrums 1d and ld', the stoppers lc,
It is installed so that it can rotate only within a predetermined angular range regulated by lc'. and a shirt (shirt) 2b provided on the door 2 having one arm portion 3a of the arm member 3 and an adjacent arm portion 2a;
2c into the holes 3e and 3e' of the arm member 3, the door 2 is attached rotatably around the holes 3e and 3e' of the arm member 3. The arm portions 3a are still adjacent to each other.

2a has a convex portion 3d on one side, and this convex portion 3d on the other side.
By providing the recess 2e that can be fitted with the arm member 3 and the door 2 during normal door opening/closing operations, the arm member 3 and the door 2 fit together at the protrusion 3d and the recess 2e and operate as one, so that the door is in the open state. In this case, when a force exceeding a limit is applied near the tip of the door in the opening direction, the fitting is disengaged. Further, in a state where the adjacent arm portions 3a, 2a are fitted by the convex portion 3d and the recessed portion 2e, the arm portion 2a of the door 2 pushes up and the arm centering on the first fulcrum 1c[, ld' The fitting is removed without interfering with the rotation of the member 3, and the door 2 is opened in the holes 3e, 3e.
' When the arm part 2a of the door 2 is rotated, the push-up by the arm part 2a of the door 2 is released, and the leaf spring 4, which can lock the arm part 3 unrotatably, is moved to the front panel main body 1.
It was established in

This will be explained in detail below.

The front panel main body 1 has a protrusion 1a at its lower part, and the door 2 opens from the state shown in FIG. At the same time, it is opened while descending toward the front side of the protrusion 1a. The maximum opening angle of the door 2 is the angle until the protrusion 3f provided on the arm member 3 comes into contact with the stopper 1c of the front panel body 1.

Near the left and right ends of #2, as shown in FIGS. 3 and 4, shirts 2b and 2c are provided, while arm member 3 has holes 3e and 3e' on the left and right sides. Then, the shaft 2b is rotatably inserted into the hole 3e', and the shaft 2C is rotatably inserted into the hole 3e', and the protrusion 2d of the door 2 is fitted into the recess 3c of the arm member 3. 2
b, 2c are held so that they do not come off from the holes 3e, 3e'.

The sliding surfaces on which the convex portion 2d and the concave portion 3c fit are formed in the holes 3e and 3.
It is located on a circular arc centered at e'.

In this way, the door 2 is rotatably attached to the arm member 3. As shown in FIG.
This is done by bending it as shown by the dashed line.

Additionally, as shown in FIG. 3, the door 2 also has an arm portion 2 at one end.
By rotating the door 2 with respect to the arm member 3, the arm portion 2a can be overlapped with the arm portion 3a of the arm member 3. At this time, as shown in FIG. 5, the concave part 2e of the arm part 2a and the convex part 3d of the arm part 3a fit together,
The door 2 and arm member 3 are held together. In the rotatable range of the arm member 3 restricted by the stopper IC provided on the front panel main body 1, the arm portion 3 of the arm member 3
a and the arm portion 2a fitted with this arm portion 3a,
Both ends are sandwiched in the slit 1b of the front panel main body 1.

Therefore, even in the state where the door 2 is fully opened, that is, the state shown in FIG. 1, in order for the arm portions 3a and 2a to be disengaged, a force P exceeding the limit must be applied to the vicinity of the door tip in the opening direction. Then, as shown in FIG.
a must be bent from side to side, and when such a force P is applied, the fitting will come off and the door 2 will hang down. Convex portion 3d
The strength with which the convex portion 3d continues to be fitted into the concave portion 2e, that is, the fitting strength, is mainly determined by the height h (Fig. 6) and the length t (Fig. 7) of the convex portion 3d.
#2. Depending on the material strength and shape of the arm member 3, the dimensions may be set so that both members come off under an appropriate force P before being destroyed.

7 to 9, a configuration for preventing the arm member 3 from becoming unstable when the fitting is restored after the fitting between the convex portion 3d and the concave portion 2e is disengaged and #2 is removed will be explained. explain.

In Fig. 7 (door 2 open state), arm part 2 of door 2
The tip of a is inserted into the slit 1b of the front panel body 1, and at the same time the slope portion 4a of the leaf spring 4 is inserted.
is pushing up. The base of the leaf spring 4 is fixed to the front panel body 1. In this state, the door 2 and the arm member 3 are integrally rotatable in the direction in which the door 2 is closed.

When the convex portion 3d and the concave portion 2e are disengaged (the state shown in FIG. 8), the arm portion 2a of the door 2 no longer pushes up the slope portion 4a of the leaf spring 4, and the end portion 4b of the leaf spring 4 It is caught on the rear surface 3h of the protrusion 3f of the arm portion 3a of the arm member 3 (see FIG. 9). The arm member 3 is therefore locked in that position;
Even if a force is applied to restore the fit by rotating the door 2 in the direction of the arrow Q at the time of restoring the fit, the arm member 3 will not become unstable.

The operation of the door device configured in this way will be explained.

First, in the normal door opening/closing operation, the convex part 3d and the concave part 2e are fitted, so the door 2 and the arm member 3 are connected to the stopper IC and 1c/1c around the fulcrums 1d and 1d'. It rotates as a unit within the opening angle range specified by , and fulfills its function as a door.

When the door 2 is open, if a pushing force exceeding the limit in the opening direction (downward) is applied to the vicinity of the tip of s2, the door 2
The arm portion 2a of the arm member 3 is disengaged from the arm portion 3a of the arm member 3, and the door 2 is closed (shirt) 2b.

It rotates around 2C and hangs down. However, since the fit between the sliding protrusion 2d of the door 2 and the recess 3C of the arm member 3 is not damaged, the shirts 2b and 2c will not come off, and therefore the door 2 will not separate from the arm member 3 and fall. .

In order to restore the fitting between the door 2 and the arm member 3 that have once come off, rotate the door 2 in the door opening direction, and the tip of the arm portion 2a of the door 2 will move in the direction of arrow Q (Fig. 8). It moves and is placed under the slope portion 4a of the leaf spring 4.

According to the embodiment described above, there are the following effects.

1. Since the door 2 and the arm member 3 are constructed as separate members, and the former is combined so as to be rotatable relative to the latter, the door 2 and the arm member 3 have the following points: fulcrums 1d and ld'; shaft 2b; 2c, etc., damage to the peripheral external part due to the detached door 2, and the door 2 can be prevented from falling.

2. The arm portion 2a provided on the door 2 and the arm portion 3a of the arm member 3 are fitted with the convex portion 3d and the concave portion 2e, and the opening of the ends of both is restricted by the slit lb of the front panel body 1. Therefore, it is easy to appropriately set the fitting strength between the door 2 and the arm member 3.

3. Arm member 3 in a state where the door 2 and arm member 3 are unfitted
Since the plate spring 4 is provided to prevent the rotation of the arm member 3, the fitting restoration operation between #2 and the arm member 3 is easy.

Note that in this embodiment, the convex portion 3d is used as the fitting means.
, a combination of recesses 2e, but hook-type, hook-type, or other fitting means may also be used.

〔Effect of the invention〕

As described in detail above, according to the present invention, it is possible to provide a door device in which the dislodged door does not damage the peripheral appearance and the door does not fall from the front panel main body.

[Brief explanation of the drawing]

1 and 2 show the main parts of a stationary VTR equipped with a door device according to an embodiment of the present invention, FIG. 1 is a perspective view of the main parts with the door open, The figure is a perspective view of the main part with the door closed, Figure 3 is an exploded perspective view of Figure 1 with the door removed, Figure 4 is a view in the direction of the ■ arrow in Figure 1,
FIG. 5 is a view taken in the direction of arrow V in FIG. 1, and FIG. 6 is a detailed view showing the deformed state when the arm portion in FIG. 5 is unfitted.
Fig. 7 is a view from the ■ arrow in Fig. 1, Fig. 8 is a detailed view showing the state in which the door is removed in Fig. 7, and Fig. 9 is a perspective view showing details of the vicinity of the leaf spring in Fig. 7. It is a diagram.゛1...Front panel body s I C, I C'・
...stopper, ld, ld'...first fulcrum, 2...
・Door, 2a...Arm part, 2e...White part, 3...Arm member s 3 at 3 b...Arm part, 3d...
Convex portion, 3e, 3e'...hole, 4...plate spring. Figure 1 zm 5th dormitory figure

Claims (1)

[Claims] 1. A front panel body having a first fulcrum and a stopper is provided with a front panel that is rotatable about the first fulcrum within a predetermined angular range regulated by the stopper. In a door device that allows the door to be opened and closed by attaching the door, an arm member having a pair of left and right arm portions and a second fulcrum provided in these arm portions is attached to the front surface of the front panel body. The door is attached so as to be rotatable about the first fulcrum within a predetermined angular range regulated by a stopper, and the door is attached to the arm member so as to be rotatable about the second fulcrum. In the operation of opening and closing the door, the arm member and the door fit together and operate as one, and when the door is in the open state and a force exceeding a limit is applied in the opening direction near the tip of the door, the fitting becomes disconnected. A door device characterized by being provided with a fitting means configured as follows. 2. The door is a door having an arm portion adjacent to at least one arm portion of the arm member, and the fitting means is a convex portion provided on one opposing surface of the mutually adjacent arm portions and a convex portion provided on the other surface. 2. The door device according to claim 1, wherein the door device is a combination of a front convex portion and a recess that can be fitted into the front convex portion. 3. In a state where adjacent arm portions are fitted by the convex portion and the concave portion, the door is pushed up by the arm portion of the door, and rotation of the arm member about the first fulcrum is not hindered. , in a state where the fitting is removed and the door is rotated about the second fulcrum, the push-up by the arm portion of the door is released;
3. The door device according to claim 2, wherein a plate spring capable of locking the arm member so as not to rotate is provided on the front panel body.