JPH0447594Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a structure for attaching a door and a handle to 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 the case of the door of furniture such as a chest of drawers, and access from both the front and back is quite complicated. Become. For this reason, there are disadvantages such as a lot of time and effort being spent on aligning the screws and screw holes, and the need to use a special assembly jig to enable access from only one side.

Means for Solving the Constituent Problems of the Invention 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 without using any screws and by accessing only from the front side of the door, while ensuring the necessary strength. ing.

Hereinafter, the operation of the present invention will be explained in detail using 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 substantially linearly 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 that extends substantially linearly between the first end 11A and the third end 11C, and the second end 11b 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 be close to the first end 11A side.

The handhold portion 12 is located on the rear third side 1 of the base portion 11.
It consists of a curved surface that bulges from 1c to the rear of the base 11.

Large L-shaped engaging claws 13 and 14 protrude downward from the second end 11B and third end 11C, respectively, which are present at the rear of the base 11. Further, in the vicinity of the first end 11A present at the front portion of the base 11, small L-shaped engaging claws 15 and 16 protrude downward from the first and second sides 11a and 11b.

As mentioned above, the handle 10 is attached to the first portion of the base 11.
It has a plane-symmetrical shape around a plane perpendicular to the base 11 including a perpendicular line drawn from the end 11A to the end 12a of the handhold part 12. 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 is attached with the curved end 12a of the handle portion 12 facing upward and to the right. The reason why the end 12a of the handhold part 12 is directed upward to the right is because the mounting structure of the present invention is suitable for application to relatively small refrigerator doors, etc., so that the end 12a of the handhold part 12 is located relatively low. 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. Furthermore, the portions of the L-shaped engaging claws 13 and 14 that come into contact with the openings 23 and 24 and the L-shaped engaging claws 1
The distance 1 ₁ between the openings 25, 26 of 5, 16 and the abutting portion, and the L-shaped engaging claw 13 of the openings 23, 24,
14 and the portions of the openings 25, 26 that abut the L-shaped engaging claws 15, 16 are spaced at equal intervals of ₁₂ .

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.

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 door 20 is opened as shown in FIGS. 5 and 6.
A small L-shaped engagement claw 15 that is rotated to the side.
16 is pressed against the peripheral edges of the openings 25 and 26 of the thin plate 21. The small L-shaped engaging claws 15 and 16 are elastically deformed by the thin plate 21 in the vicinity and the base 11 of the handle 10 by the above-mentioned pressing force, so that the opening 2
Pass through 5,26. As shown in FIG. 7, when the small L-shaped engaging claws 15, 16 pass through the openings 25, 26 and the elastic deformation is removed, the L-shaped engaging claws 13, 14 and the abutting portions of the L-shaped engaging claws 15 and ₁₆ , and the opening 2.
3 and 24 and the openings 25 and ₂₆ are equal, the L-shaped engaging claws 13 to 16 are prevented from separating from the corresponding openings. By this,
Attachment of the handle 10 to the door 20 is completed.

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. Also,
K is a simple support fulcrum that approximates the engagement point between the L-shaped engagement claw 13' and the opening 23', and L approximates the engagement location between the L-shaped engagement claw 15' and the opening 25'. It is a simple support fulcrum. Furthermore, as shown in A, F is
This is an approximation of the force applied to the beam J when an attempt is made to open the door by placing the hand on the handhold portion 12 and applying force. 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, then from the condition of balance between the force and moment acting on the beam J, the reaction force R1 generated at the supports K and L,
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 carried by the large L-shaped engaging claw. 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 tools or applying extremely large force. be able to.

In addition, if you need to replace one of the doors or handles because the door or handle is soiled after installation, a special method is used in which you insert your hand all the way into the handhold part 12 and use the base of your finger as a fulcrum to lift your fingertip. By applying appropriate force, the small L-shaped engaging claws 15,1
6 has a weak engagement force, so that the engagement between the two can be released with a weak force. This type of application of special force is not done during use, and after the door is attached to the refrigerator body, the door opens before the handle is detached from the door, so there is no problem. There isn't.

Further, although a configuration in which two large L-shaped engaging claws are formed has been illustrated, there may be three or more. For example, one similar L-shaped engagement claw may be added between the large L-shaped engagement claws. The same applies to the small L-shaped engaging claw. moreover,
As for the small L-shaped engagement pawl, only one may be installed at the tip of the bottom of the handle.

In addition, the first and second sides 11a, 11 of the base 11
Although the configuration in which b is approximately straight has been illustrated, these sides may be any curved line such as a continuous circular arc at the first end.

Effects of the invention As explained in detail above, the present invention has an L
By elastically engaging the letter-shaped engaging pawls, the handle can be attached to the door without using any screws, by accessing only from the front side of the door, and while ensuring the necessary strength. This eliminates the need to spend a lot of time aligning screws and screw holes, or to use special assembly jigs, as in conventional models, greatly improving assembly speed and efficiency. This has the effect of reducing costs. Furthermore, the distance between the two engaging claws that contact the opening is ₁ , and the distance between the two engaging claws is 2, which is provided on the door.
By making the spacing between the two openings equal (1 _{and 2} ), the handle and the door can be firmly fixed by engaging the engaging claws with the openings, and by releasing the engagement of the small engaging claws, the handle can be firmly fixed with a weak force. This has the effect that the handle can be easily removed from the door.

[Brief explanation of the drawing]

Figures 1 to 3 are a plan view, a back view, and a perspective view of a handle in an embodiment of the mounting structure of the present invention, respectively, and Figure 4 shows the arrangement of the door of an electric refrigerator and the opening formed therein. Front view, Figures 5 to 7
The figures are cross-sectional views showing step by step how the handle is attached to the door of an electric refrigerator, 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 a door of an electric refrigerator and a handle attached to the door, the handle has a substantially flat base and a space between which a hand can be inserted. a first L-shaped engaging claw protruding downward from the base near the protruding side end of the handle; a second L-shaped engagement claw that projects downward and is smaller than the first L-shaped engagement claw, and the door has a first L-shaped engagement claw of the handle. A first opening that receives and engages, and a second L-shaped engagement claw of the handle that causes elastic deformation in at least one of the handle and the door, and a second opening that engages the small L-shaped engaging claw by eliminating the elastic deformation upon completion of passage of the L-shaped engaging claw; When the shaped engagement claw is engaged with the first and second openings, a portion of the first L-shaped engagement claw that comes into contact with the first opening and a portion of the second L-shaped engagement claw a distance 1 ₁ from the part that abuts the second opening;
The distance 1 2 between the portion of the first opening that contacts the first L-shaped engagement claw and the portion of the second opening that contacts _the second L-shaped engagement claw is approximately equal. The electric refrigerator door and handle installation structure is characterized by: