JPH0141111Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention Industrial Application Field The present invention relates to a structure for attaching the door and handle of an electric refrigerator.

BACKGROUND OF THE INVENTION A handle attached to the door of an electric refrigerator needs to have an excellent design and sufficient strength to withstand long-term use.

Conventionally, the strength of electric refrigerators has been ensured by screwing the handle to the door.

Problems that the invention aims to solve In the conventional screw-fastening structure described above, due to the design requirement that the screw-fastening point should not be seen by the user of the electric refrigerator, the door was closed when the handle was attached. This requires access from both the front and back sides. However, the door of an electric refrigerator has a relatively thick box shape filled with insulation material such as foam material, so the situation is different from that of furniture doors such as chests of drawers, and access from both the front and back is quite complicated. becomes. For this reason, there are disadvantages such as a lot of time spent aligning the screws and screw holes, and the need to use special assembly jigs and tools to enable access only from the front side of the door. It was hot.

Structure of the invention Means for solving the problems The present invention, which solves the problems of the prior art described above, has an L-shaped engaging claw provided on the handle side that is inserted into the opening provided on the door side of the electric refrigerator. By engaging with the handle, the handle can be quickly and securely attached to the door by accessing only from the surface side of the door without using any screws, while ensuring the necessary strength. There is.

Hereinafter, the operation of the present invention will be explained in detail by way of examples.

Embodiment FIGS. 1 to 3 are a top view, a back view, and a perspective view, respectively, of a handle 10 according to an embodiment of the present invention.

This handle 10 includes a base portion 11 and a handhold portion 12.
and four L-shaped engagement claws 13 to 16 for engagement.

The base 11 has a first side extending in a substantially straight line between the first end 11A and the second end 11B, as most clearly shown by the shaded area in FIG. 11a, a second side 11b extending substantially linearly between the first end 11A and the third end 11C, and the second end 11A and the third end 11C.
A curved third side 11c that extends between the two sides. The lengths of the first and second sides 11a and 11b are approximately equal, and the extension lines of both sides are approximately perpendicular to each other at the first end 11A. The third side 11c is curved so as to approach the first end 11A side.

The handhold portion 12 is formed of a curved surface that protrudes toward the rear of the base 11 from a third side 11c existing at the rear of the base 11.

Second end 11B and third end 11 of base 11
Large L-shaped engaging claws 13 and 14 from each of C.
protrudes downward. Further, in the vicinity of the first end 11A of the base 11, the first and second sides 11
A, a small L-shaped engagement claw 15 downward from 11b,
16 protrudes downward.

As mentioned above, the handle 10 is attached to the first portion of the base 11.
It has a line-symmetrical shape around a plane that passes through a perpendicular line drawn from the end 11A to the line segment 12a and is perpendicular to the base 11. This is to substantially balance the forces applied to the engagement portions formed on the left and right sides of this plane of symmetry, thereby increasing reliability in terms of strength, as well as enhancing the aesthetic appearance due to the symmetry.

As shown in FIG. 4, the door 20 of the electric refrigerator to which the handle 10 having the above structure is attached includes a thin plate 21 installed upright, and a
The openings 23 to 26 are provided. These four openings are formed at positions where the handle 10 can be attached with the curved end 12a of the handle 12 facing upward and to the right. End portion 12 of handhold portion 12
The reason why a is directed upward to the right is because the mounting structure of the present invention is suitable for application to the door of a relatively small electric refrigerator, and therefore, when the handle is located at a relatively low location. This is based on the ergonomic considerations of making it easier for right-handed people, who account for the majority of users, to open the door.

Large L-shaped engaging claws 13 and 14 of the handle 10 are engaged with the openings 23 and 24, respectively. On the other hand, small L-shaped engaging claws 15 and 16 of the handle 10 are engaged with the openings 25 and 26, respectively.

5 to 7 are cross-sectional views showing how the handle 10 is attached to the thin plate 21 of the door 20 in order.
A' is a sectional view, and B is a BB' sectional view.

First, the large L-shaped engaging claws 13 and 14 of the handle 10 are inserted into the openings 23 and 24. The portions of the openings 23 and 24 that engage with the large L-shaped engagement claws are recessed from the surface of the thin plate 21 by a predetermined depth. This is to increase the strength of the engagement location by bending the thin plate 21 at the engagement location. That is, in the door of an electric refrigerator, a thick layer of heat insulating material such as a foam material is formed inside the door, and the thin plate 21, which is usually formed of a metal plate, cannot be made very thick due to cost considerations. For this reason, conventionally, the screw-fastening locations were lined with reinforcing members. In the present invention, as mentioned above, by recessing the engagement part with the L-shaped engagement claw to a predetermined depth to provide a step,
A reinforcing member can be omitted.

The handle 10 has a large L-shaped engagement claw 13,
14 and the openings 23 and 24 of the thin plate 21 as a fulcrum, the small L-shaped engaging claws 15 and 16 are rotated toward the door 20 as shown in FIG. , 26.
The small L-shaped engaging claws 15 and 16 pass into the openings 25 and 26 as the thin plate 21 and the bottom 11 of the handle 10 in the vicinity thereof are elastically deformed by the above-mentioned pressing force. As shown in FIG. 7, when the small L-shaped engaging claws 15 and 16 pass through the openings 25 and 26 and the elastic deformation is removed, the L-shaped engaging claws 1
3 to 16 are prevented from leaving the corresponding openings. This completes the attachment of the handle 10 to the door 20 of the electric refrigerator.

FIG. 8A shows four L-shaped engaging claws 13 to 16.
4 is a cross-sectional view of a hypothetical one-dimensional structure, assuming that all four openings 23 to 26 corresponding to the above are concentrated on the straight line OP in FIG. 4. FIG. In the same figure,
The large L-shaped engaging pawl 13' corresponds to the actual L-shaped engaging pawls 13 and 14 that are grouped together on a straight line OP.
The opening 23' also corresponds to the actual openings 23 and 24 that are grouped together on the straight line OP. The same applies to the small L-shaped engaging claw 15' and the opening 25'.

The virtual one-dimensional structure of A can be further approximated by an equivalent beam structure as shown in B. In the figure, J is a beam that approximates the handle 10, and K
is a simple supporting fulcrum that approximates the engagement point between the L-shaped engagement claw 13' and the opening 23', and L is a simple support point that approximates the engagement location between the L-shaped engagement claw 15' and the opening 25'. It is a supporting fulcrum. Further, as shown in A, F is an approximation of the force applied to the beam J when the door is attempted to be opened by applying force to the handhold portion 12. This force F is approximated by a concentrated load acting vertically above the beam J at approximately the midpoint M of the handhold portion 12 in the depth direction.

The distances between the force application point M and the fulcrums K and L are respectively a and
b, the reaction force R generated at the supports K and L from the condition of balance between the force and moment acting on the beam J
1, R2 becomes R1=(b/a)R2.

By making b sufficiently larger than a as shown in the figure, most of the force applied when opening the door can be applied to the large L-shaped engaging claw side. Therefore, the L-shaped engaging claws 15 and 16 can be made small, and the handle 10 can be quickly and easily attached to the door 20 without using special jigs or tools or applying extremely large force. It can be done easily.

In addition, if you need to replace one of the doors or handles because they become dirty after installation, insert your hand deep enough into the handhold 12 and use the base of your finger as a fulcrum to lift your fingertip. The engagement between the two can be released by applying a special force. This kind of special force is not applied during use, and after the door is attached to the refrigerator body, the door opens before the handle is removed from the door, so there is no problem. do not have.

Further, although a configuration in which two large L-shaped engaging claws 13 and 14 are provided has been illustrated, the number of these large L-shaped engaging claws may be three or more. For example, a third large L-shaped engaging pawl may be added to the above embodiment near the intersection of the plane of symmetry OP and the rear side 11c. The same applies to the small L-shaped engaging claw. Further, as for the small L-shaped engaging pawl, only one small L-shaped engaging pawl may be formed at the tip of the bottom of the handle.

In addition, the first and second sides 11 of the bottom part 11 of the handle
Although a configuration in which a and 11b are substantially straight lines has been illustrated, these sides may be any suitable shape such as a continuous arc or part of an ellipse at the first end 11A.

Effects of the invention As explained in detail above, the present invention eliminates the need for screws by elastically engaging the L-shaped engaging pawl provided on the handle side into the opening provided on the door side. The structure is such that the handle can be attached to the door by accessing only from the front side of the door without having to do so while ensuring the necessary strength, so there is no need to align the screws and screw holes like in the conventional case. This eliminates the need for extensive labor and the use of special assembly jigs and tools, greatly increasing assembly speed and efficiency and reducing costs.

In addition, since a step is formed on the periphery of the opening in the thin plate that engages with the L-shaped engagement pawl to increase its strength, it has the effect of achieving the necessary strength without using reinforcing members. .

[Brief explanation of the drawing]

Figures 1 to 3 are a plan view, back view, and perspective view of a handle in an embodiment of the present invention, Figure 4 is a front view showing the arrangement of the door and the opening formed in it, and Figure 5 7 to 7 are sectional views showing how the handle is attached to the door in order, and FIG. 8 is a conceptual diagram for explaining the operation of the present invention. 10... Handle, 11... Base, 12... Handhold portion, 13, 14... Large L-shaped engaging claw, 1
5, 16...Small L-shaped engagement claw, 20...Door of electric refrigerator, 21...Thin plate, 23 to 26...L
An opening that engages with a letter-shaped engagement claw.

Claims (1)

[Claims for Utility Model Registration] Consisting of an electric refrigerator door having a thin plate and a handle attached to the door, the handle having a substantially flat base and allowing a hand to be inserted between the base. a plurality of first L-shaped engaging claws protruding downward from the base in the vicinity of the protruding side end of the handle; and the base. and a second L-shaped engagement claw that protrudes downward from the base and is smaller than the first L-shaped engagement claw, the thin plate of the door is connected to the first of the handle. a first opening that receives and engages an L-shaped engagement claw, the engagement portion of which is recessed to a predetermined depth from the surrounding area; and a first opening that protrudes downward from the base of the handle. 2
The second L-shaped engaging claw is caused to pass through the handle and the thin plate while causing elastic deformation, and the elastic deformation is canceled as the second L-shaped engaging claw finishes passing. The second L-shaped engaging claw is engaged with the second L-shaped engaging claw.
An electric refrigerator door and handle mounting structure characterized by having an opening.