JP4630167B2 - Wiring cover mounting structure - Google Patents

Description

  The present invention relates to a wiring cover mounting structure in a device with a door such as a cooling storage.

For example, in a wide-through refrigerator, a pair of heat-insulating doors are mounted in a double door type on the front opening of the storage room, whereas the front frame that divides the front opening left and right is not arranged, The seals inside and outside the cabinet are taken by closely adhering packings attached to adjacent edges of both doors. This type is intended to use the front opening widely, but compared to the one with the front frame, it is inevitably inferior in heat insulation between the inside and outside of the cabinet, so there is a situation that condensation tends to occur on the surface of the door. There is a case where a heater for preventing condensation is buried in the door.
In this case, the wiring from the heater is led out from the lower surface of the door and then led into the main body through a cylindrical hinge pin provided on the lower hinge. More specifically, from the viewpoint of workability at the time of assembly and door replacement, the door-side wiring led out from the door and the main-body side wiring led out from the main body are connected by a connecting member such as a giboshi terminal, Excess wiring is bundled and the connection terminals are arranged on the lower surface side of the hinge. At that time, a wiring cover is attached and covered so that the wiring is not exposed.
Conventionally, as an example of means for attaching the wiring cover to the hinge, one described in Patent Document 1 is known, and this is a latch provided along either the left or right side edge of the wiring cover. The scissors are fixed by being hooked and pushed into the corresponding side edge of the hinge and screwed on the opposite side edge side.
Japanese Patent No. 3622016

However, the above-described mounting structure has a problem that it is difficult to perform the screwing work itself because it requires a lot of man-hours especially due to the screwing work and a large space cannot be secured. Further, when removing the wiring cover during maintenance such as door replacement, it is naturally troublesome because the screw must be removed, and further improvement has been desired.
The present invention has been completed based on the above circumstances, and an object of the present invention is to make it possible to easily attach and detach the wiring cover to and from the hinge.

  As a means for achieving the above object, the invention according to claim 1 is directed to a wiring cover that covers a lower portion of a hinge that supports the lower end of the door so that the lower end of the door is rotatable about a vertical axis. Is mounted between the hinge and the wiring cover so that a connecting portion between the door side wiring and the main body side wiring of the electrical component disposed on the door can be stored. In the structure for mounting, between the hinge and the wiring cover, a rail portion is provided that allows the wiring cover to be pushed in a horizontal direction while supporting the wiring cover so as not to drop. Further, when the wiring cover is pushed to a predetermined position, it has a feature in that a locking projection is provided that is elastically fitted into a locking hole opened in the hinge to prevent it from coming off.

  According to a second aspect of the present invention, in the first aspect of the present invention, the hinge is provided with a horizontal postured board with hinge pins, the locking hole is opened in the board, and the wiring cover is The upper portion of the wiring cover is stretched along the lower surface of the substrate when the pushing operation is performed. It is characterized in that the locking projection is provided on the upper plate.

According to a third aspect of the present invention, in the second aspect of the present invention, a guide surface inclined forward and downward along the pushing direction of the wiring cover is formed at the protruding end of the locking protrusion. Has characteristics.
The invention of claim 4 is characterized in that, in the invention according to claim 2 or claim 3, a slit is cut in the vicinity of the formation position of the locking projection on the upper surface plate of the wiring cover. Have.

According to a fifth aspect of the present invention, the wiring cover according to any one of the second to fourth aspects, wherein the wiring cover is located below a protruding position of the locking protrusion on the upper surface plate, and It is characterized in that a stopper that restricts excessive elastic deformation by abutting the upper surface plate is provided.
The invention according to claim 6 is the substrate according to claim 5, wherein the stopper is elastically deformable, and the upper plate is elastically deformed before the locking projection is fitted into the locking hole. A feature is that a clearance between the upper surface plate and the stopper is set so that the upper surface plate abuts against the stopper when it is in contact with the lower surface.

According to a seventh aspect of the present invention, in the wiring cover according to the fourth aspect, a shielding plate that shields a lower portion of the slit is formed to protrude from an inner wall, and the shielding plate and an inner bottom surface of the wiring cover are formed. It is characterized in that a storage space is formed between the door side wiring and the main body side wiring so that the connection portion can be stored therebetween.
According to an eighth aspect of the present invention, in the wiring cover according to the seventh aspect, the wiring cover is formed with an open rear surface, and a rising portion is formed at an edge portion other than the rear side of the free edge of the shielding plate. It has the characteristics in the place.
According to a ninth aspect of the invention, there is provided the method according to any one of the seventh to eighth aspects, wherein the shielding plate functions also as the stopper described in the fifth and sixth aspects. It has the characteristics.

According to a tenth aspect of the present invention, the wiring cover according to any one of the second to ninth aspects, wherein a rear surface of the wiring cover is opened, and an inner bottom surface of the wiring cover has a downward slope toward the rear. It is characterized in that it is formed in an inclined shape.
According to an eleventh aspect of the present invention, in any one of the second to tenth aspects, a connecting portion between the door side wiring and the main body side wiring floats from the inner bottom surface on the inner bottom surface of the wiring cover. It is characterized by the fact that ribs that can be supported in a raised state are raised.
According to a twelfth aspect of the present invention, in the substrate according to any one of the second to eleventh aspects, the left and right side edges of the hinge substrate are formed in a posture substantially along the pushing direction of the wiring cover. In addition, the left and right side edges of the upper surface of the wiring cover are characterized in that rail grooves facing the front-rear direction in which the left and right side edges of the substrate are slidably fitted are formed.

<Invention of Claim 1>
When the wiring cover is pushed in along the rail portion and reaches a predetermined position, the locking protrusion of the wiring cover is elastically fitted into the locking hole of the hinge, and the wiring cover is in the falling direction and the pressing direction with respect to the hinge. It is attached with movement restricted. When removing the wiring cover, the latching protrusion can be elastically displaced to remove it from the latching hole, and then removed by pulling out the wiring cover.
Since the screwing is eliminated and the so-called fitting type is adopted, the wiring cover can be attached and detached efficiently in a short time.
In addition, when the wiring cover is made of synthetic resin, when it is screwed, it is necessary to embed a nut in the wiring cover by insert molding. There is a situation that it is not easy to dispose of it and it is difficult to reuse it. In that respect, in the present invention, when the wiring cover is made of a synthetic resin, it is not necessary to embed a nut, so that the cost can be reduced, and the elimination of the metal part facilitates the disposal of the wiring cover, which in turn can be reused. Is possible.

<Invention of Claim 2>
The wiring cover is deformed by elastically deforming the upper surface plate and the locking protrusion is pushed in while sliding the lower surface of the substrate of the hinge. It is attached by fitting in the opened locking hole. When removing the wiring cover, press the locking protrusion with a release jig or the like, and the upper surface plate will be elastically deformed and the locking protrusion will come out of the locking hole. it can.
On the wiring cover side, a locking projection is provided on the integrally formed upper surface plate, and on the hinge side, only a locking hole is formed in the substrate, which can be handled with a simple structure.

<Invention of Claim 3>
A guide surface that slopes forward and downward in the push-in direction is formed at the protruding end of the locking projection, so that when the wiring cover is pushed in, the locking projection can easily sink into the lower surface of the hinge board. As a result, the wiring cover can be attached smoothly.
<Invention of Claim 4>
Since the slit is cut in the vicinity of the formation position of the locking projection on the upper surface plate of the wiring cover, the upper surface plate is easily elastically deformed when a pressing force is applied to the locking projection, and as a result, the wiring cover The attachment / detachment operation can be performed more easily.

<Invention of Claim 5>
When removing the wiring cover, the locking protrusion fitted in the locking hole is pushed in by a release jig or the like. However, if the pushing amount is too large, the upper surface plate may be pushed down excessively and may be damaged. . In this respect, in the present invention, the upper surface plate is restricted from being excessively deformed by hitting the stopper, and damage is prevented from occurring.
<Invention of Claim 6>
When the wiring cover is pushed in and the latching protrusion enters the lower surface of the substrate and slides, the stopper is also elastically deformed in addition to the upper surface plate. Therefore, when the locking projection is pushed into place and the locking projection corresponds to the locking hole, the locking projection receives the restoring elasticity of the stopper in addition to the top plate and fits into the locking hole, so that the fitting is performed more reliably. Is called.
When pushing the locking projection that fits into the locking hole with a release jig to remove the wiring cover, the top plate hits the stopper before the locking projection completely comes out of the locking hole, so there is a large resistance. The degree of push-in can be recognized. For this reason, it is possible to avoid pushing the locking projections into a large amount.

<Invention of Claim 7>
In the storage space formed below the shielding plate, the connecting portion of both wirings can be stored. If a slit is cut in the upper surface plate of the wiring cover, water may enter through the slit, but it will be blocked by the shielding plate and will not reach the storage space, that is, the wiring and its connection part may be splashed with water. Is prevented.
<Invention of Claim 8>
The water that has fallen on the upper surface of the shielding plate flows to the rear side while being blocked by the rising portion, and is discharged outside through the opening on the rear surface of the wiring cover.
<Invention of Claim 9>
The shielding plate also functions as a stopper that restricts excessive deformation of the upper surface plate. Multifunctionality can be demonstrated with a simple structure.

<Invention of Claim 10>
Even if water falls on the inner bottom surface of the wiring cover, it flows down to the rear side following the inclination and is discharged to the outside through the opening on the rear surface. It is possible to prevent the wiring and its connecting portion from being immersed in water.
<Invention of Claim 11>
The wiring and its connecting portion are supported on the ribs on the ribs and floating from the inner bottom surface of the wiring cover, and are similarly prevented from being immersed in water. In addition, the bottom surface is reinforced by providing the ribs.
<Invention of Claim 12>
The wiring cover is pushed and attached to the hinge by fitting the pair of left and right rail grooves into the left and right side edges of the board and pushing them in. A push-in mounting structure for the wiring cover can be realized with minimal design changes on the hinge side.

<Embodiment>
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In this embodiment, the case where it applies to the vertical refrigerator of a four-door wide-through type is illustrated.
In FIG. 1, reference numeral 10 denotes a refrigerator body, which is formed by a vertically long heat insulating box having an open front surface, supported by legs 11 disposed on the bottom surface, and provided with a machine room 12 on the top surface. ing. The inside of the refrigerator main body 10 is a storage room, and a front-facing frame 13 is attached to the front opening to form an upper and lower two-stage entrance.

  A pair of heat-insulating doors 15 are attached to the upper and lower entrances so as to be openable and closable. The pair of doors 15 are supported so that the upper and lower ends of the outer vertical edges of the pair of doors 15 are fitted to vertical hinge pins provided on the hinges 30 so as to be rotatable around the vertical axis. Here, each doorway is not provided with a vertical front frame, and the left and right doors 15 have packings that are in close contact with the mouth edge of the doorway, except for the three adjacent edges, when the doors are closed. On the back side, the magnet packing 16 is mounted so as to protrude from the side surface and abut against each other at the adjacent vertical edge, and between the mouth edge of the doorway when closed, In addition, the space between the doors 15 is sealed. When both doors 15 are opened, the doorway can be fully opened with no partition.

In this type of wide-through type, compared to those having a vertically oriented front frame, there is a dislike of heat insulation between the inside and outside of the cabinet, and for example, condensation tends to occur on the surfaces of the doors 15 adjacent to each other at the vertical edges. There is. For this reason, a dew condensation prevention heater (not shown) made of a cord heater or the like is embedded in the door 15 in a state of being applied to the back surface of the front plate of the door 15.
Here, for example, in the upper door 15, the wiring connected to the heater is pulled out from the upper surface of the outer vertical edge and passes through the cylindrical hinge pin provided in the upper hinge 30 </ b> U into the machine room 12. Guided to an installed electrical box (not shown).

  On the other hand, in the lower door 15, after the wiring is drawn out from the lower surface of the outer vertical edge, it is led into the refrigerator main body 10 through the same cylindrical hinge pin 38 provided in the lower hinge 30 </ b> D. It is led to an electrical equipment box installed in the machine room 12 through a side wall or the like. In detail, when assembling the door 15 to the main body 10 at the time of manufacture in the factory, or considering the workability when the door 15 is replaced, as shown in FIG. 2, the door 15 side is connected to the heater side. The wiring 20 is guided to the shaft hole 18 of the door 15 and led out to the lower surface side of the lower hinge 30D through the hinge pin 38. On the main body 10 side, the main body side wiring 21 is inserted through the bottom wall. Through the hole 19, it is led out from the front surface to the lower surface side of the lower hinge 30 </ b> D, and the terminals of both wires 20 and 21 are connected to each other. The structure of the connecting portion 23 is as shown in FIG. 12, after the male and female terminal terminals 24 and 25 are fixed to the ends of the wires 20 and 21, and the terminal terminals 24 and 25 are fitted and connected. The outer side is covered with an insulating cover 26. The surplus wirings 20 and 21 are bundled so as to be folded and arranged together with the connection portion 23 on the lower surface side of the lower hinge 30D. At that time, the wiring cover 40 is attached and covered so as not to be exposed. ing.

Next, the structure of the portion for attaching the wiring cover 40 to the lower hinge 30D will be described in detail.
The right and left hinges of the lower hinge 30D are formed symmetrically, and therefore a pair of wiring covers 40 attached to them are also provided. Hereinafter, the lower hinge 30D portion on the right side will be described.
The lower hinge 30D is made of metal, and as shown in FIGS. 3 to 6, is formed in an L shape in which a mounting plate 32 is bent at a right angle downward from the rear edge of a horizontally long substrate 31. The mounting plate 32 has a stepped shape with a slightly hanging right end, and three insertion holes 33 for screws shown in the figure are formed at intervals in the horizontal direction. These insertion holes 33 are round holes on the right side and the other two holes are long holes. An insertion groove 34 through which the main body side wiring 21 can be inserted is formed in the step portion of the mounting plate 32 so as to open to the lower edge.

The substrate 31 is formed in a stepped shape with a slightly longer right dimension at the right end, and as shown in FIG. 4, the left edge 35 </ b> L extends straight to the near side so as to form a right angle with the mounting plate 32. On the other hand, the right edge 35R extends in an oblique posture so that the front end is on the left side. The step portion of the front edge of the substrate 31 is formed to bulge in an arc shape, and an attachment hole 37 is opened in the bulged portion 36, and the above-described cylindrical hinge pin 38 is fitted by press-fitting from above. It is worn. Note that the lower end of the hinge pin 38 slightly protrudes from the lower surface of the substrate 31 (see FIG. 5).
As shown in FIG. 2, the lower hinge 30 </ b> D is fixed by attaching the mounting plate 32 to the lip of the lower right corner of the front opening of the refrigerator main body 10 and screwing in three places. The shaft hole 18 opened on the lower surface of the door 15 is supported by the hinge pin 38 via the hinge collar 28 so as to be rotatable.
Here, a circular locking hole 39 for attaching a wiring cover 40, which will be described in detail later, is opened at the left rear corner of the substrate 31.

The wiring cover 40 is made of synthetic resin such as ABS resin, and basically has a deep dish shape having a planar shape substantially following the shape of the substrate 31 so as to cover the lower portion of the lower hinge 30D. Is formed.
Specifically, as shown in FIGS. 7 and 8, the rear surface side of the wiring cover 40 is opened over the entire width, and the upper surface plate 41 is stretched over the upper surface opening. On the left and right side edges of the upper surface plate 41, projecting walls 42 having a bowl-like cross section and facing in the front-rear direction are formed facing each other, and the left and right side edges of the lower hinge 30D are formed inside each projecting wall 42. Rail grooves 43 are formed in which 35L and 35R are slidably fitted. Further, as shown in FIGS. 3 to 5, an escape groove 44 that fits and releases the lower end portion of the hinge pin 38 at a position near the right end when viewed from the front surface of the upper surface plate 41 is cut from the rear edge to the vicinity of the front edge. Has been. Reinforcing downward ribs 44 </ b> A are formed on the side edges of the escape grooves 44. Further, the rear edges of the left and right side walls 45 protrude rearward from the rear edge of the bottom wall 46 by substantially the thickness of the mounting plate 32 described above.

  Therefore, the wiring cover 40 is pushed into the back side as guided by the rail groove 43 by fitting the left and right rail grooves 43 to the left and right side edges 35L, 35R of the substrate 31 of the lower hinge 30D. The face plate 41 moves directly below the lower surface of the substrate 31 while letting the lower end portion of the hinge pin 38 escape to the groove 44. As shown in FIG. 10, the pushing is stopped when the rear edge of the bottom wall 46 of the wiring cover 40 comes into contact with the right lower end of the mounting plate 32. At that time, as shown in FIG. 40 can cover the bottom of the substrate 31 of the lower hinge 30D almost completely.

There is a predetermined position in the vicinity of the left back corner of the upper surface plate 41 of the wiring cover 40, that is, a position corresponding to a position directly below the locking hole 39 of the substrate 31 when the wiring cover 40 is mounted at the normal position as described above. A locking projection 50 having a columnar shape that fits closely into the locking hole 39 is provided. As shown in FIGS. 6 and 10, the locking projection 50 has a height dimension that is about half of the thickness of the substrate 31, and its protruding end surface is pushed in the locking projection 50. A guide surface 51 is formed so as to be inclined downward so that the upper end position on the rear side in the direction is connected to the lower end position on the front side.
Further, as shown in FIG. 4, a slit 53 is cut in the upper surface plate 41 from the rear edge to the vicinity of the front edge immediately on the left side of the formation position of the locking protrusion 50. Thereby, the formation position vicinity of the latching protrusion part 50 in the upper surface board 41 is made easy to bend and deform | transform (henceforth the easily deformable part 54).

  As described above, the stopper plate 56 is provided to prevent the easily deformable portion 54 from being excessively deformed by providing the easily deformable portion 54 on the upper surface plate 41. As shown in FIG. 4, the stopper plate 56 extends from the left side wall 45 to a position slightly to the right of the formation position of the locking projection 50, and as shown in FIG. Is formed in a horizontal posture parallel to the upper surface plate 41. The left edge and the front edge of the stopper plate 56 are integrally connected to the inner surfaces of the left wall 45 and the front wall 47 of the wiring cover 40, and the right edge and the rear edge are free edges. The interval between the upper surface plate 41 and the stopper plate 56 will be described in detail with reference to FIG. 9 when the easily deformable portion 54 of the upper surface plate 41 is bent downward and deformed as the wiring cover 40 is pushed in, as will be described later. As shown, a slight gap still remains between the easily deformable portion 54 and the stopper plate 56.

  Further, the stopper plate 56 described above functions as a shielding plate by being stretched so as to shield the lower side of the slit 53 cut in the upper surface plate 41. That is, even when water enters from the slit 53, it is prevented from being blocked by the stopper plate 56 (shielding plate) and descending below the stopper plate 56 (shielding plate), and therefore between the stopper plate 56 (shielding plate) and the bottom wall 46. In addition, a storage space 58 in which the hanging of water is restricted is configured. As shown in FIG. 8, a rising portion 57 is formed on the right edge of the stopper plate 56 (shielding plate) so as to rise by a predetermined dimension.

As shown in FIGS. 8 and 9, the bottom wall 46 of the wiring cover 40 is formed in an inclined shape having a downward slope toward the rear (right side in FIG. 9) over its entire width. As shown in FIG. 10, the rear edge of the bottom wall 46 can abut on the lower end of the long hanging portion on the right end side of the mounting plate 32 of the lower hinge 30 </ b> D. As shown in FIG. 11, the remaining part is positioned further below the lower end of the remaining part of the mounting plate 32 with a short hanging length.
A plurality of support ribs 59 extending in the depth direction are provided on the inner surface of the bottom wall 46 of the wiring cover 40 so as to protrude in the width direction. As shown in FIG. 9, each support rib 59 is formed so as to gradually become taller toward the rear while the bottom wall 46 is rearwardly lowered, so that the upper edge of the support rib 59 is It can take almost horizontal posture.

  Then, the effect | action of this embodiment is demonstrated. The lower hinge 30 </ b> D is attached in the manner described above at the left and right lower corners at the edge of the front opening of the refrigerator body 10. At this time, the insertion groove 34 formed in the attachment plate 32 of the lower hinge 30 </ b> D corresponds to the outlet on the front surface of the insertion hole 19 formed in the bottom wall 46 of the main body 10. The main body side wiring 21 is led out from the insertion hole 19 of the bottom wall 46 through the insertion groove 34 of the mounting plate 32 to the front, and a female side terminal 25 is fixed to the end of the wiring 21, for example. Then, the cover 26 is inserted behind the terminal 25. On the other hand, on the door 15 side, the door side wiring 20 connected to the heater is led out to the lower surface side through the shaft hole 18, and the male side terminal 24 is fixed to the end of the wiring 20.

  The door 15 is assembled | attached to the refrigerator main body 10 from the state which concerns. A hinge collar 28 is fitted to the hinge pin 38 of the lower hinge 30D, and the door 15 passes the end of the door-side wiring 20 through the hinge pin 38 of the lower hinge 30D and hangs down to the lower surface side, and the shaft hole 18 is hinged to the hinge collar 28. By being fitted to the hinge pin 38 via the pin, it is supported so as to be rotatable. After that, the terminal terminal 24 of the door side wiring 20 and the terminal terminal 25 of the main body side wiring 21 are connected and covered with the cover 26. As described above, when the terminals of both the wirings 20 and 21 are connected, the connecting portion 23 is arranged on the lower side of the lower hinge 30D, and the lower part thereof is covered with the wiring cover 40.

  First, as shown in FIG. 12, the connecting portion 23 of both ends of the wirings 20 and 21 and the surplus wirings 20 and 21 are bundled so as to be folded, and the bottom wall 46 (supporting) of the wiring cover 40 is supported. Rib 59). From this state, the wiring cover 40 is pushed in the direction indicated by the arrow in FIG. 3 with the left and right rail grooves 43 aligned with the left and right side edges 35L and 35R of the substrate 31 of the lower hinge 30D. The wiring cover 40 is pushed into the back side as guided by the rail groove 43, and the guide surface 51 of the locking projection 50 hits the front edge of the substrate 31 of the lower hinge 30D during the pushing, so that FIG. As shown in FIG. 3, the easily deformable portion 54 of the upper surface plate 41 is bent downward and deformed, so that the locking projection 50 enters the lower surface of the substrate 31, and the locking projection 50 is slid by being pressed against the lower surface of the substrate 31. It is pushed in.

When the push-in progresses and the right edge of the bottom wall 46 of the wiring cover 40 comes into contact with the mounting plate 32, the push-in is stopped. At that time, the locking projection 50 is formed in the locking hole of the substrate 31 of the lower hinge 30D. Therefore, as shown in FIG. 10, the easily deformable portion 54 is restored and deformed, and the locking projection 50 is fitted into the locking hole 39 from below. As a result, the wiring cover 40 is locked so as not to move in the front-rear direction, and the left and right rail grooves 43 are fitted to the left and right side edges 35L and 35R of the substrate 31 so that the left and right and up and down movements are restricted. It is attached to the hinge 30D.
In the state where the wiring cover 40 is attached, as shown in FIG. 13, the lower hinge 30D is completely covered below the substrate 31, and as shown in FIG. 23 and the part where the surplus wirings 20 and 21 are bundled are stored in a state of being placed on the support rib 59 erected on the bottom wall 46 of the wiring cover 40.

When it is necessary to remove the door 15 for maintenance or replacement of the door 15, the door 15 is opened and the upper part of the locking hole 39 in the lower hinge 30 </ b> D is opened. When the locking projection 50 fitted in the locking hole 39 is pushed by a tool (not shown) as shown by the arrow in FIG. 10, the easily deformable portion 54 of the upper surface plate 41 is forcibly bent downward. Since the latching protrusion 50 is deformed and falls below the latching hole 39, the wiring cover 40 can be removed from the lower hinge 30 </ b> D by pulling out the left and right side walls 45 and the like. At this time, if the pushing amount of the locking projection 50 by the releasing jig is too large, the easily deformable portion 54 may be excessively pushed down, but in such a case, the easily deformable portion 54 may come into contact with the stopper plate 56. Is restricted from excessively deforming.
When the wiring cover 40 is removed, the connecting portion 23 between the door side wiring 20 and the main body side wiring 21 is exposed, so that the connection between the terminal terminals 24 and 25 is released by shifting the cover 26. The wirings 20 and 21 are separated. Thereby, the door 15 can be removed from the lower hinge 30D.

According to this embodiment, the following many advantages can be obtained.
Since the mounting method of the wiring cover 40 is a so-called fitting type instead of the conventional screwing method, the attaching / detaching operation to the lower hinge 30D of the wiring cover 40 can be performed efficiently in a short time. Further, when the wiring cover 40 is screwed, it is necessary to embed a nut in the wiring cover 40 by insert molding, which increases costs and is a waste because synthetic resin and metal are integrated. However, in this embodiment, there is no need to embed a nut, so the cost can be reduced, and the wiring cover 40 can be easily discarded by eliminating the metal part. As a result, it can be reused.

As a specific locking means, a locking protrusion 50 is projected from an integrally formed upper surface plate 41 on the wiring cover 40 side, and a locking hole 39 is opened in the substrate 31 on the lower hinge 30D side. It can be handled with a simple structure.
In the same means, the guide surface 51 inclined downward in the pushing direction is formed at the protruding end of the locking projection 50. Therefore, when the wiring cover 40 is pushed, the locking projection 50 is moved to the lower hinge 30D. Therefore, the wiring cover 40 can be smoothly attached.

Further, since the slit 53 is cut in the vicinity of the formation position of the locking projection 50 on the upper surface plate 41 of the wiring cover 40, when a pressing force acts on the locking projection 50, The portion where the stop protrusion 50 is provided (the easily deformable portion 54) is easily elastically deformed, so that the wiring cover 40 can be attached and detached more easily.
As a means for pressing and mounting the wiring cover 40 while supporting the lower hinge 30D so as not to drop, a pair of left and right rail grooves 43 are provided in the wiring cover 40, and the rail grooves 43 are formed on the substrate 31 of the lower hinge 30D. Thus, the push-in mounting structure of the wiring cover 40 can be realized while minimizing design changes on the lower hinge 30D side.

  When removing the wiring cover 40, the locking protrusion 50 fitted in the locking hole 39 is pushed in by a release jig or the like. However, if the pushing amount is too large, the easily deformable portion 54 of the upper surface plate 41 becomes excessive. May be pushed down. Further, when the wiring cover 40 is transported, the easily deformable portion 54 may be excessively pushed down due to a foreign object or the like. In this respect, in this embodiment, since the stopper plate 56 is stretched below the easily deformable portion 54, the upper surface plate 41 is restricted from being excessively deformed by hitting the stopper plate 56, and may cause damage or the like. To be prevented.

The clearance between the upper surface plate 41 of the wiring cover 40 and the stopper plate 56 is such that the upper surface plate 41 can be easily moved before the engagement protrusion 50 is fitted in the engagement hole 39 opened in the substrate 31 of the lower hinge 30D. A setting may be made such that the easily deformable portion 54 can hit the stopper plate 56 when the deformable portion 54 is in contact with the lower surface of the substrate 31 while being elastically deformed.
With such a structure, when the wiring cover 40 is pushed into the lower hinge 30 </ b> D and the locking projection 50 slides into the lower surface of the substrate 31, in addition to the easily deformable portion 54 of the upper surface plate 41. The stopper plate 56 is also elastically deformed. Therefore, when the locking projection 50 is pushed into a predetermined position and the locking projection 50 corresponds to the locking hole 39, the locking projection 50 receives the restoring elasticity of the stopper plate 56 in addition to the easily deformable portion 54 and fits into the locking hole 39. Therefore, the fitting is performed more reliably.
On the other hand, when the locking projection 50 fitted in the locking hole 39 is pushed in with a release jig or the like to remove the wiring cover 40, before the locking projection 50 completely comes out of the locking hole 39, Since the easily deformable portion 54 comes into contact with the stopper plate 56, a large resistance is learned, and the degree of the push-in amount can be recognized. For this reason, it is possible to avoid pushing the locking protrusion 50 in a large amount.

  The stopper plate 56 is stretched so as to block the lower side of the slit 53 cut in the upper surface plate 41 so as to provide the easily deformable portion 54, and a rising portion 57 is formed on the right edge of the stopper plate 56. ing. Therefore, even when water enters from the slit 53, it falls to the upper surface of the stopper plate 56, flows to the rear side while being blocked by the rising portion 57, and is discharged to the outside from the opening on the rear surface of the wiring cover 40. For this reason, a storage space 58 is defined between the stopper plate 56 and the bottom wall 46 to restrict the hanging of water. If the surplus wirings 20 and 21 become longer, as shown in FIG. 12, the wirings 20 and 21 and the connection portion 23 may protrude to the storage space 58 side. Therefore, it is possible to prevent the wires 20 and 21 and the connection portion 23 from being splashed with water. Since the stopper plate 56 is also provided with a water shielding function, the structure is easily organized.

Since the wiring cover 40 is formed with an opening at the rear surface, and the inner surface (inner bottom surface) of the bottom wall 46 of the wiring cover 40 is formed in an inclined shape with a downward slope toward the rear, Even if water falls, it flows down to the rear side following the inclination and is discharged to the outside through the opening on the rear surface. In addition, since the support rib 59 is erected on the inner bottom surface of the wiring cover 40, the door-side wiring 20, the main body-side wiring 21 and the connection portion 23 are supported in a state of floating from the inner bottom surface. And the connection portion 23 is reliably prevented from being immersed in water. Thus, leakage and corrosion can be prevented in advance.
Further, since the wiring cover 40 is provided so as to cover the lower part of the lower hinge 30D, there is a possibility of hitting a mop or the like when cleaning the floor, for example, but the wiring cover 40 is supported on the inner bottom surface of the wiring cover 40 as described above. By raising the rib 59, the bottom wall 46 can be particularly strengthened.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the above embodiment, the stopper plate for preventing excessive deflection is provided by using the shielding plate having the function of preventing water catching, but the stopper plate and the shielding plate may be provided separately, or either Those provided with only one of them are also included in the technical scope of the present invention.
(2) The structure of the rail portion provided between the hinge and the wiring cover may be another structure such as a rail groove formed on the hinge side.

(3) If the mounting structure of the wiring cover is mainly intended only for the fitting type, the wiring cover may be made of metal.
(4) The wiring on the door side is not limited to the heater exemplified in the above embodiment, and may be wiring connected to other electrical components such as an indicator lamp that displays the internal temperature and the like.
(5) The present invention is not limited to a cooling storage such as a refrigerator exemplified in the above embodiment, but can be widely applied to all devices in which a door provided with an electrical component is attached to a main body freely by a hinge. .

The front view of the refrigerator which concerns on one Embodiment of this invention Side cross-sectional view at the mounting position of the lower hinge Perspective view of the state before the lower hinge and wiring cover are assembled Plan view Cross-sectional view taken along line V-V in FIG. Sectional view taken along line VI-VI in FIG. Perspective view from the back side of the wiring cover Rear view Sectional view of the wiring cover while it is being pushed Longitudinal sectional view cut at the fitting part when the wiring cover is installed Longitudinal section cut at the hinge pin Cross sectional view Same perspective view

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Refrigerator main body (main body) 15 ... Door 20 ... Door side wiring 21 ... Main body side wiring 23 ... Connection part 30D ... Lower hinge (hinge) 31 ... Board | substrate 35L, 35R ... Side edge (rail part of the board | substrate 31) 38 ... Hinge pin 39 ... Locking hole 40 ... Wiring cover 41 ... Top plate 43 ... Rail groove (rail part) 46 ... Bottom wall 50 ... Locking protrusion 51 ... Guide surface 53 ... Slit 54 ... Easily deformable part 56 ... Stopper Plate (stopper: shielding plate) 57 ... Rising part 58 ... Storage space 59 ... Support rib (rib)

Claims (12)

A hinge that supports the lower end of the door so that the lower end of the door can be rotated about the vertical axis is mounted with a wiring cover so as to cover the lower part of the hinge, and the hinge is arranged between the hinge and the wiring cover. What can accommodate the connection part of the door side wiring and the main body side wiring of the installed electrical component, is a structure for attaching the wiring cover to the hinge,
Between the hinge and the wiring cover, there is provided a rail portion that supports the wiring cover so that it cannot be dropped and allows it to be pushed along the horizontal direction. A wiring cover mounting structure, characterized in that a locking projection is provided that elastically fits into a locking hole opened in the hinge to prevent it from coming off when pushed. The hinge is provided with a horizontal board with hinge pins upright, the locking holes are opened in the board, and the wiring cover is formed in a dish shape covering the lower part of the hinge pin board with a synthetic resin material. The wiring cover is formed with an upper surface plate that is movable along the lower surface of the substrate when pushed, and the locking projection protrudes from the upper surface plate. The wiring cover mounting structure according to claim 1, characterized in that: The wiring cover mounting structure according to claim 2, wherein a guide surface inclined forward and downward along a pushing direction of the wiring cover is formed at a protruding end of the locking protrusion. 4. The wiring cover mounting structure according to claim 2, wherein a slit is cut in a vicinity of a position where the locking protrusion is formed on the upper surface plate of the wiring cover. The wiring cover is provided with a stopper that restricts excessive elastic deformation by abutting the upper surface plate, located below the protruding position of the locking protrusion on the upper surface plate. The wiring cover mounting structure according to any one of claims 2 to 4, wherein the wiring cover mounting structure is provided. The stopper is elastically deformable, and the upper surface plate contacts the stopper when the upper surface plate is in contact with the lower surface of the substrate while elastically deforming the upper surface plate before the locking protrusion fits into the locking hole. 6. The wiring cover mounting structure according to claim 5, wherein a clearance between the upper surface plate and the stopper is set. In the wiring cover, a shielding plate that shields the lower side of the slit is formed so as to protrude from the inner side wall, and a connecting portion between the door side wiring and the main body side wiring is provided between the shielding plate and the inner bottom surface of the wiring cover. 5. The wiring cover mounting structure according to claim 4, wherein a storage space that can be stored is formed. 8. The wiring cover mounting structure according to claim 7, wherein the wiring cover is formed with an open rear surface, and a rising portion is formed at an edge other than the rear side of the free edge of the shielding plate. . 9. The wiring cover mounting structure according to claim 7, wherein the shielding plate functions also as the stopper described in the fifth and sixth aspects. 10. The wiring cover according to any one of claims 2 to 9, wherein the wiring cover is formed with an open rear surface, and an inner bottom surface of the wiring cover is formed in an inclined shape with a downward slope toward the rear. Wiring cover mounting structure described in Crab. 3. A rib is provided on an inner bottom surface of the wiring cover so as to support a connecting portion between the door side wiring and the main body side wiring in a state of floating from the inner bottom surface. Item 11. A wiring cover mounting structure according to any one of Items 10 to 10. The left and right side edges of the substrate of the hinge are formed in a posture substantially along the pushing direction of the wiring cover, and the left and right side edges of the board are respectively connected to the left and right side edges of the upper surface of the wiring cover. The wiring cover mounting structure according to any one of claims 2 to 11, wherein a rail groove facing in the front-rear direction to be slidably fitted is formed.

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