JPH0861833A - Door lock device in refrigerator - Google Patents

Abstract

(57) [Abstract] [Purpose] A door lock device in a refrigerator in which a base of a door formed in a quadrangular shape so that the opening can be closed is rotatably supported in a housing having an opening. In addition to preventing loss and ensuring that the closed state of the door can be retained, it will also be possible to easily handle doors that open on either the left or right side with a small number of parts. [Structure] A slit 45 is provided in a support plate 43 which is fastened to a cabinet facing a front side upper corner portion 17 ₁ of a door 13 in a closed position, and a shaft 46 traversing the slit 45 is integrally formed. provided at the base 44a of the distal-side upper corner portion 17 ₁ can be engaged with the engaging recess 28 provided in the locking member 44 is fitted in the shaft 46 with a shaft 46 removably allowed to fit A substantially C-shaped pivotal support portion 54 capable of elastically holding the combined state is provided, and the lock member 44 is provided.
Is supported by the support plate 43 so that its rotating position can be held.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device in a refrigerator in which a base of a rectangular door, which is capable of closing the opening, is rotatably supported by a cabinet having an opening, In particular, the present invention relates to a door lock device suitable for a refrigerator mounted on an automobile, a ship, or the like.

[0002]

2. Description of the Related Art A refrigerator installed in an automobile, a ship, or the like requires a door lock device for preventing a door in a closed state from opening due to vibration. The lock pin inserted into the engaged plate is fitted into the door, and the lock pin is connected to the housing by, for example, a synthetic resin chain.

[0003]

However, in the above-mentioned conventional one, the synthetic resin chain may be broken, and in that case, the lock pin may be lost. Therefore, it is necessary to provide a door lock device having a structure capable of preventing loss of parts, and at that time, it is desirable that the number of parts of the door lock device is small.

The present invention has been made in view of the above circumstances, and there is provided a door lock device for a refrigerator which is capable of reliably maintaining a closed state of a door with a small number of parts without causing loss of parts. The purpose is to provide.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 is such that a cabinet having an opening is provided with a base portion of a door which is formed in a square shape so that the opening can be closed. In a rotatably supported refrigerator, a locking recess is provided in the upper corner of the front end of the door, and a synthetic resin is fastened to the cabinet facing the upper corner of the front end of the door in the closed position. The support plate made of metal is provided with an insertion hole into which a screw member screwed into the housing is inserted, and a slit having an outer end open and an inner end closed on one side surface side of the support plate. Is integrally provided with a shaft that traverses a portion closer to the inner end of the lock member. The plug is inserted and removed, and the fitted state of the shaft is elastically released. Is provided with a substantially C-shaped pivot portion, and the lock member engages the engagement portion with the engagement recess and the engagement position of the lock member with the shaft fitted in the pivot portion. It is characterized in that it is supported by a support plate so as to be able to rotate between the disengagement positions where the portion is disengaged from the locking recess and to hold the rotation position of the lock member.

According to the second aspect of the invention, in addition to the structure of the first aspect of the invention, the base portion of the lock member is fitted into the slit by frictionally contacting both side surfaces of the base portion with the inner side surface of the slit. Two pairs of recesses are formed on each of the front and back surfaces of the support plate, the recesses being connected to both sides of the intermediate portion of the slit, and the lock members are flush with the support plate at their engaging positions on both sides. Protrusions that are fitted into the recesses of either one of the above sets are respectively provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 to 7 show an embodiment of the present invention. FIG. 1 is a perspective view of a refrigerator, and FIG.
2 is an enlarged cross-sectional view of FIG. 3, FIG. 3 is an enlarged cross-sectional view of line 3-3 of FIG. 1, FIG. 4 is an enlarged view of arrow 4 of FIG. 1, FIG. 5 is an enlarged cross-sectional view of line 5-5 of FIG. 4, and FIG. 5 is a sectional view taken along line 6-6 of FIG. 5, and FIG. 7 is an exploded perspective view of the support plate and the lock member.

First, referring to FIGS. 1 and 2, this refrigerator is mounted on, for example, an automobile, and has an opening 1
1 and a door 13 rotatably supported by the housing 12 so that the opening 11 can be closed.

The frame 14 of the door 13 has left and right extending vertically.
A pair of vertical frames 15₁, 15₂And on the left and right,
Lower pair of horizontal frames 16₁, 16₂And their flair
Mu 15₁, 15₂, 16₁, 16₂4 things that connect each other
Corner frame 17₁~ 17 _FourComposed of and.

Horizontal frame 16₁Is a synthetic resin extruded material?
And a frame plate portion 18 extending in a strip shape and a frame plate portion.
Locking collars that are provided at right angles on both ends in the width direction of 18
19 ₁, 19₂And the inner surface in the width direction intermediate portion of the frame plate portion 18
The locking brim portions are connected at right angles to each other at intervals.
19₁, 19₂Locking groove 22 between₁, 22₂To form
A pair of holding flanges 20₁, 20₂And both holding collars 2
0₁, 20₂Connect the middle parts of the
And a connecting plate portion 21 forming a rectangular fitting hole 23 therebetween.
And is formed in a left-right symmetrical cross-sectional shape. Moreover, Ryoho
Holding part 20₁, 20 ₂So that the tips of the
Be bent.

The other horizontal frame 16 ₂ and both vertical frames 15 ₁ and 15 ₂ also have the same horizontal cross-sectional shape as the horizontal frame portion 16 ₁ and are formed of a synthetic resin extruded material.

In FIG. 3, the corner frame 17
₂Is a vertical frame 15₂First frame part 25 connected to
a and horizontal frame 16₁Second frame portion 25b connected to
And are connected in a substantially L shape, and both ends are
Form 15₂And horizontal frame 16 ₁Can contact the end of
Frame main part having flat contact surfaces 26a and 26b
25 and vertical frame 15₂Can be fitted into the fitting hole 23 of
Is projected from the contact surface 26a on the first frame portion 25a side.
Fitting projection 27a and horizontal frame 16₁Fitting hole 23
Abutment surface 2 on the second frame portion 25b side that can be fitted to
6b, and a fitting protrusion 27b protruding from
Formed by fat.

In addition, on the outer surface of the first frame portion 25a of the frame main portion 25, the vertical frame 15 ₂ side is closed and the side opposite to the vertical frame 15 ₂ is opened so as to extend in the longitudinal direction of the vertical frame 15 _2. A groove-shaped locking recess 28 extending along the groove is provided. Also, the frame main part 25
In the second frame portion 25b, a cylindrical boss portion 29 is provided so as to project from the outer surface of the second frame portion 25b, and at the outer end of the boss portion 29, a bottomed pivot hole 30 is formed. Is provided.

Further, the chamfered portion 3 which becomes narrower toward the tip side is formed at the tip edges of the fitting protrusions 27a and 27b.
1a and 31b are provided, respectively.

Other corner frames 17 ₁ , 17 ₃ , 1
7 ₄ also has the same shape as the above-mentioned corner frame 17 ₂ and is made of synthetic resin.

Thus, a pair of left and right vertical frames 15 ₁ , 1
And 5 _2, on, frame composed of the transverse frame 16 _1, 16 ₂ below a pair, the frames 15 _1, and 15 _2, 16 _1, 16 ₂ four corner frames 17 _{1-17 4} connecting the mutual the 14, as shown in Figure 2, the outer edge locking groove 22 ₂ formed over the entire circumference at the inner side of the frame 14 fitted, so as to lock, the closure plate 32, a can of beer, etc. And a back plate 33 having a pocket 33a for storing
4, a rubber cushioning member 34 is mounted over the entire circumference of 4, and the cushioning member 34 is loaded with a permanent magnet 35 that exerts a magnetic attraction force on the housing 11.

On the other hand, on the outer side of the frame 14
Holding collar part 20 that is continuous all around ₁The outer surface of the
A support sheet 36 made of paper, such as soft paper, is adhered to prevent the blockage.
A foam material is provided in the frame 14 between the plate 32 and the support sheet 36.
37 is filled and foamed. At this time, the holding brim 20
₁, 20₂The tips bent so that they are close to each other
The anchoring effect is exerted to strengthen the bond with the foam material 37.

A plurality of cushion materials 38 are attached to the outer surface of the support sheet 36, and the outer peripheral edge of the decorative panel 39 whose back surface is supported by these cushion materials 38 is located outside the frame 14. Is fitted and locked in a locking groove 22 ₁ formed over the entire circumference.

The base portion of the door 13 as described above, for example, the right end portion of the door 13 when it is opened leftward is rotatably supported by the housing 12. That is, on the upper and lower surfaces of the container 12,
Bracket plates 41, 41 projecting from the housing 12 are fastened so as to face the upper and lower right corners of the door 13, that is, the corner frames 17 ₂ , 17 ₃ , and are fixed to the bracket plates 41, 41. Support shaft 42 ...
Are fitted into the pivot holes 30 ... Of the boss portions 29 of the corner frames 17 ₂ and 17 ₃ , respectively. As a result, the right end portion of the door 13 is rotatably supported by the cabinet 12 by allowing the pivot shafts 42, ...

Referring to FIGS. 4, 5, 6 and 7 together, the upper corner portion on the front end side of the door 13, that is, the right end portion, is the upper left end portion of the door 13 rotatably supported by the housing 12. The corner frame 17 ₁ located in the corner frame 17 ₁ is provided with a groove-shaped locking concave portion 28 at the front end side thereof, and the corner frame 17 ₁ is opened in a state where the door 13 is in the closed position.
₁ of the lock member 44 made engageable synthetic resin locking recess 28, the support plate made of fastening synthetic resin in the refrigerator body 12 so as to face the corner frame 17 ₁ of the door 13 in the closed position 43.

The support plate 43 has a pair of insertion holes 5 through which a pair of screw members 52, 52 screwed into the housing 12 are inserted.
The door 1 which is provided with 3, 53 and is in the closed position
Locking recess 28 in the corner frame 17 ₁
Is provided with a slit 45 corresponding to. Thus, both insertion holes 53, 53 are formed in a long hole shape that is long in the longitudinal direction of the support plate 43 so that the fixing position of the support plate 43 to the housing 12 can be adjusted. The slit 45 is formed so as to open the outer end and close the inner end on one side surface of the support plate 43 on the same side as the opening direction of the locking recess 28, and the portion near the inner end of the slit 45. A shaft 46 that traverses is integrally provided with the support plate 43. The shaft 46 may be made of synthetic resin and integrally formed when the support plate 43 is formed, and a metal rod-shaped member may be formed when the support plate 43 is formed.
It may be integrated with the support plate 43 by being mold-bonded to the support plate 43.

The lock member 44 comprises a base portion 44a supported by the support plate 43 and a distal end side engaging portion 44b engageable with the locking recess 28, which are connected in a substantially L-shape. .
Thus, the base portion 44a of the lock member 44 is fitted into the slit 45 such that both surfaces thereof are brought into frictional contact with both inner side surfaces of the slit 45, and the lock member 44 is attached by the shaft 46.
The base portion 44a of the above is rotatably supported by the support plate 43. That is, the base portion 44a of the locking member 44 is provided with a pivotal support portion 54 having a slit 54a on one side and having a substantially C-shape.
Is fitted so that it can be inserted and removed, and the fitting state of the shaft 46 can be elastically retained. The shaft 46 was fitted to the pivotal support portion 54 while expanding the slot 54a. In this state, the lock member 44 is between the engagement position where the engagement portion 44b on the tip side is engaged with the locking recess 28 and the engagement release position where the engagement portion 44b is disengaged from the locking recess 28. It becomes possible to rotate. Moreover, since the base portion 44a of the lock member 44 is in frictional contact with both inner side surfaces of the slit 45, the rotational position of the lock member 44 can be held at an arbitrary position.

Guide projections 47, 47 are provided on both inner side surfaces of the slit 45 near the open end, and the lock member 44 is provided with guide grooves 48, 48 into which the guide projections 47, 47 are fitted. , Is formed in an arc shape centered on the shaft 46. Further, a pair of recesses 49, 49 connected to the middle portion of the slit 45 are provided on the surface side of the support member 43, and the lock member 44 is supported at the engagement position where the engagement portion 44b is engaged with the engagement recess 28. Protrusions 50, 50 are provided which are fitted in the recesses 49, 49 so as to be flush with the surface of the plate 43.

Further, the lock member 44 is provided with a photographing portion 44c which is continuous with the engaging portion 44b on the tip side in order to facilitate the turning operation.

By the way, the support plate 43 is not only provided on the left side of the door 13 as described above, but also on the front and back sides so as to be able to cope with the case provided on the right side of the door 13 (that is, the case of right opening). Both sides are formed to have the same shape. That is, the pair of recesses 49, 49 are also provided on the back surface side of the support plate 43.

Next, the operation of this embodiment will be described. An engaging recess 28 is provided in the upper corner of the front end of the door 13, that is, the corner frame 17 _1.
An engaging portion 44b that can be engaged with the engaging recess 28 when the door 13 is in the closed position is provided on the support plate 43 that is fixed to the support plate 43.
The base portion 44a of the lock member 44 having the front end side has an engagement position where the engagement portion 44b is engaged with the locking recess 28 and an engagement release position where the engagement portion 44b is disengaged from the locking recess 28. It is supported so that it can rotate between. Therefore, compared with the conventional one in which the lock pin connected to the housing with a synthetic resin chain or the like is fitted to the door, the chain will not be broken and the lock component will not be lost, The closed state of the door 13 can be reliably maintained.

Moreover, the support plate 43 is provided with recesses 49, 49 which are continuous with the intermediate portion of the slit 45, and the lock member 4 is provided.
4 is provided with projections 50 and 50 which are fitted in the recesses 49 and 49 so as to be flush with the support plate 43 at the engagement position, the lock member 44 is set to the engagement position. This can be confirmed, and the engagement position can be stably maintained.

When the left end of the door 13 is supported on the housing 12 and opens to the right, the support plate 43 may be fixed to the upper surface of the right end of the housing 12, and the support plate 43 is the right end of the door 13. 1 in the state in which the part is supported by the case 12
Fastened to 2.

At this time, for example, when the lock member 44 is supported by the support plate 43 by a screw member or the like fastened to the support plate 43, it is necessary to attach or detach the screw member to or from the support plate 43. Since the shaft 46 supporting the lock member 44 is integrated with the support plate 43, and the lock member 44 is provided with the pivotal support portion 54 into which the shaft 46 is removably fitted, With a structure that minimizes the number of parts,
The lock member 44 can be attached to and detached from the support plate 43, and the support plate 43 and the lock member 44 can be assembled by facilitating the assembly operation regardless of whether the door 13 is opened to the left or the right side. be able to.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. It is possible to do.

For example, instead of frictionally contacting the lock member 44 with the support plate 43, a recess or projection provided on the lock member 44 side and a projection or recess provided on the support plate 43 side are elastically engaged. It is also possible to hold the turning position of the lock member 44 by the click stopper mechanism configured to do so.

[0033]

As described above, according to the first aspect of the present invention, the engaging recess is provided in the upper corner of the front end of the door, and the upper corner of the front end of the door in the closed position is exposed. The synthetic resin support plate fastened to the case body has an insertion hole through which a screw member screwed into the case body is inserted, and the outer end is opened and the inner end is closed on one side surface side of the support plate. And a slit is provided, and a shaft that traverses a portion near the inner end of the slit is integrally provided, and has an engaging portion engageable with the locking recess on the distal end side and is disposed in the slit. The base of the lock member is provided with a substantially C-shaped pivotal support that can insertably and removably fit the shaft and can elastically maintain the fitted state of the shaft. The locking member in the squeezed state has an engaging position where the engaging portion is engaged with the engaging recess, and Because they are supported by the support plate as capable of holding the rotational position of the lock member while allowing the rotation of the engagement portion between the engagement release position is disengaged from the locking recess,
With a structure with a reduced number of parts, it is possible to prevent the lock parts from being lost and to reliably hold the closed state of the door.

According to a second aspect of the present invention, in addition to the structure of the first aspect of the invention, the base portion of the lock member is fitted into the slit by frictionally contacting both side surfaces of the base portion with the inner side surface of the slit. Two pairs of recesses are formed on each of the front and back surfaces of the support plate, the recesses being connected to both sides of the intermediate portion of the slit, and the lock members are flush with the support plate at their engaging positions on both sides. Since the protrusions that fit into the recesses of either one of the above groups are provided, it is possible to easily deal with doors that open on either the left or right side, and apply to doors that open on the left or right side. Even if it is done, the rotation position of the lock member can be held, the engagement position can be stably maintained, and it can be easily confirmed that the lock member is in the engagement position.

[Brief description of drawings]

FIG. 1 is a perspective view of a refrigerator.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG.

FIG. 4 is an enlarged view of FIG.

5 is an enlarged sectional view taken along line 5-5 of FIG.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is an exploded perspective view of a support plate and a lock member.

[Explanation of symbols]

11 ... Opening 12 ... Storage 13 ... Door 17 ₁ ... Corner frame as a tip side upper corner 28 ... Locking recess 43 ... Support plate 44 ... Lock member 44a ... Base of lock member 44b ... Engaging portion 45 ... Slit 46 ... Shaft 49 ... Recess 50 ... Projection 52 ... Screw member 53 ... Insertion hole 54. ..Pivots

Claims (2)

[Claims] 1. A container (12) having an opening (11).
, In refrigerator base door (13) which is formed in a rectangular shape as possible close said opening (11) is rotatably supported, on the leading end side upper corner portion of the door (13) (17 ₁₎ Is provided with a locking recess (28), and the upper corner portion (17 ₁ ) of the front end of the door (13) in the closed position.
The support plate (43) made of synthetic resin and fastened to the housing (12) facing the housing (12) has a screw member (5) screwed to the housing (12).
2) through which the insertion hole (53) is inserted, and the support plate (4)
3) A slit (45) whose outer end is open and whose inner end is closed is provided on one side surface side, and a shaft (46) which traverses a portion near the inner end of the slit (45) is integrally provided. The base (44a) of the lock member (44) having the engaging portion (44b) engageable with the locking recess (28) on the tip side and arranged in the slit (45) has the shaft. (46) is removably fitted and the shaft (4
6) is provided with a substantially C-shaped pivoting portion (54) capable of elastically retaining the fitted state, and the lock member (44) is fitted with the shaft (46) in the pivoting portion (54). ) Between the engagement position where the engagement portion (44b) is engaged with the locking recess (28) and the engagement release position where the engagement portion (44b) is disengaged from the locking recess (28). A door lock device for a refrigerator characterized in that the door lock device is supported by a support plate (43) so that the lock member (44) can be rotated and the rotation position of the lock member (44) can be held. 2. The base (44a) of the locking member (44)
Is fitted into the slit (45) by frictionally contacting both side surfaces of the support plate (43) with the inner surface of the slit (45).
Two sets of recesses (49) are formed on each of the front and back sides of the slit (45) and are connected to both sides of the intermediate portion of the slit (45). The door lock device for a refrigerator according to claim 1, wherein each of the pair of protrusions (50) is fitted into the recess (49) of the one set so as to be flush with the other.