JPH0141110Y2 - - 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. Must be accessible from both the front and back. However, the door of an electric refrigerator is in the shape of a thick box filled with insulation material such as foam, so the situation is different from the door of furniture such as a chest of drawers, and access from the front and back sides of the door is quite cumbersome. Become something. This has disadvantages, such as the need to spend a lot of time aligning screws and screw holes, and the need to use special assembly jigs and tools to allow access from only one side of the door. It was hot.

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 pedestal and the handle side, which is inserted into the opening provided on the door side of the electric refrigerator. By elastically engaging the handle, the handle can be quickly and securely attached to the door without using any screws and by accessing only from the surface 1 of the door, while ensuring the necessary strength. It is configured.

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 two large L-shaped engagement claws 13, 14 and a small L-shaped engagement claw 15, which protrude downward from the base 11.
It is equipped with 16.

The handhold portion 12 is made of a curved surface that protrudes from the rear peripheral edge of the base 11 toward the rear of the base 11,
When this handle 10 is attached to a pedestal, which will be described later, a space is formed between this curved surface and the pedestal to allow insertion of the hand.

As mentioned above, the base 11, the handholds 12 and 4
Handle 1 consisting of L-shaped engaging claws 13 to 16
0 has a plane-symmetrical shape around a plane passing through the straight line OP shown in FIGS. 1 and 2 and perpendicular to the plane of the paper. This is to substantially balance the forces applied to the engagement points formed on the left and right sides of this plane of symmetry, thereby increasing reliability in terms of strength and aesthetics.

4 to 6 are a plan view, a back view, and a sectional view of the pedestal 20 arranged between the handle 10 and the door.

The pedestal 20 includes a substantially square substrate 21, L-shaped engaging claws 27 and 28 that protrude downward from first and second peripheral edges of the substrate 21, and first and second peripheries of the base 21.
openings 25 and 26 formed near the peripheral edge of the
Openings 23 formed in third and fourth peripheral edges located approximately midway between the first and second peripheral edges of the substrate 21,
24, and cylindrical projections 29, 29' projecting downward from the substrate 21. In addition, Figure 6 shows
Bent chain line C- set in Figure 4
It is a sectional view along C'.

The pedestal 20 consisting of the above-mentioned elements passes through a line segment O'P' that overlaps one diagonal line of the board 21 and connects the board 21.
It has a symmetrical shape around a plane perpendicular to .

As shown in FIG. 7, the door 30 of the electric refrigerator to which the handle 10 and pedestal 20 configured as described above are attached is as follows:
A thin plate 31 installed upright, and four rectangular openings 33, 34, 3 opened on this thin plate 31.
7, 38 and two circular openings 39, 39'. Each of the rectangular openings 37 and 38 receives and engages with the L-shaped engagement claws 27 and 28 of the base 20. On the other hand, circular openings 39 and 39'
each accommodates a cylindrical projection 29 and 29' projecting downward from the base plate 21 of the pedestal 20.

These openings, as shown by the dotted lines in FIG.
When the door 30 of the electric refrigerator is installed upright,
The pedestal 20 is installed at a position such that the plane of symmetry O'P' of the pedestal 20 faces upward and to the right. Further, the handle 10 is mounted on the base 20 such that the plane of symmetry O'P' of the base and the plane of symmetry OP of the handle coincide. As a result, the symmetry plane of the handle 10 faces toward the upper right, and therefore, the end of the raised curved surface of the handhold portion 12 of the handle 10 faces toward the upper right.
The reason why the end of the handle part 12 is directed upward to the right is because the mounting structure of the present invention is suitable for application to relatively small refrigerators. This is based on the fact that refrigerators are often located in low places, and ergonomic considerations make it easier for right-handed people, who account for the majority of users of electric refrigerators, to open the door.

8 to 10 are cross-sectional views showing how the pedestal 20 is attached to the thin plate 31 of the door 30 in order. FIG. 3 is a cross-sectional view taken along a line.

First, as shown in FIG. 8, the base 20 is brought close to the thin plate 31 of the door 30 of the electric refrigerator, and the L-shaped engaging claws 27, 28 are inserted into the corresponding openings 37, 38. While performing this insertion, by moving the pedestal 20 to the right in the figure as shown in FIG. to engage. At this time, as shown in FIG.
9', the base plate 21 and the thin plate 31 of the base 20 are elastically deformed by bending, and the maximum displacement equal to the height of the protrusions 29, 29' is shared between the thin plate 31 and the base plate 21.

As shown in FIG. 10, L-shaped engaging claws 27, 2
When the pedestal 20 is moved to the right in the figure to a position where the portion of the 8 that is substantially orthogonal to the substrate 21 comes into contact with the peripheral edge of the corresponding opening, the protrusions 29, 29' move into the corresponding openings 39, 39'. The elastic deformation described above disappears, and the attachment of the pedestal 20 to the door 30 is completed.

11 to 13 are cross-sectional views showing how the handle 10 is attached to the thin plate 31 of the door 30 and the pedestal 20 attached thereto, and in each figure A is the same as in FIG. AA' is a sectional view, and B is a BB' sectional view.

First, as shown in FIG. 6, the L-shaped engaging claws 13 and 14 of the handle 10
4 and is engaged with openings 33 and 34 in door 30 which communicate with openings 23 and 24, respectively.

Next, as shown in FIG. 12, the handle 10 is rotated toward the pedestal 20 using the L-shaped engaging claws 13, 14 and the corresponding openings as fulcrums. The engaging claws 15 and 16 are pressed against the peripheral edges of the openings 25 and 26 of the base 20. Small L
The letter-shaped engaging claws 15 and 16 pass through the openings 25 and 26 as the base plate 21 and the bottom portion 11 of the handle 10 in the vicinity thereof are elastically deformed by the above-mentioned pressing force.

Finally, as shown in FIG. 13, when the small L-shaped engaging claws 15 and 16 pass through the openings 25 and 26 and the elastic deformation is removed, they are prevented from leaving the openings. . This completes the attachment of the handle 10 to the pedestal 20 and door 30.

FIG. 14A shows four L-shaped engaging claws 13 to 1.
6 and all the openings that engage with these are aligned with the straight line in Figure 4.
It is a cross-sectional view of a hypothetical one-dimensional structure assuming that it is concentrated on O′P′. In the figure, the large L-shaped engagement claw 13' is the actual L-shaped engagement claw 13'.
and 14 are placed together on the straight line OP, and the openings 23' and 33' are also the actual openings 23, 24 and 33,
It corresponds to 34 all 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 33', 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, 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 base 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 available in which you insert your hand sufficiently deep into the handhold part 12 and use the base of your finger as a fulcrum to lift your fingertip. By applying appropriate force, the engagement between the base and the handle can be released. Such special force is not applied during use, and after the door is attached to an electric refrigerator, etc., the door opens before the handle is detached from the door, so there is no need to apply any special force. No problem.

Although the configuration in which the pedestal is approximately square has been exemplified above, it may have an appropriate shape such as an ellipse.

Moreover, although the configuration in which two L-shaped engaging claws 13 and 14 are formed has been illustrated, there may be three or more. For example, one L-shaped engagement pawl may be added near the intersection of the plane of symmetry OP and the rear edge of the bottom. The same applies to the small L-shaped engagement claw of the handle. Furthermore, only one small L-shaped engaging pawl may be formed at the tip of the handle base.

Effects of the Invention As explained in detail above, the present invention allows the L-shaped engaging claws provided on the pedestal side and the handle side to elastically engage into the opening provided on the door side of the electric refrigerator. The structure allows access only from the surface side of the door without using any screws, and the handle can be attached to the door while ensuring the necessary strength. This eliminates the need to spend a lot of time aligning screw holes and to use special assembly jigs and tools, greatly increasing assembly speed and efficiency and reducing costs.

In addition, since the present invention has a structure in which a pedestal is interposed between the door and the handle of the electric refrigerator, the thin plate on the door surface is reinforced by the pedestal, improving the durability of the entire mounting structure, and the handle By forming the pedestal and the pedestal separately, the shaping mold can be simplified and manufacturing costs can be reduced.

[Brief explanation of the drawing]

1 to 3 are a plan view, a back view, and a perspective view of a handle according to an embodiment of the present invention, FIGS. 4 to 6 are a plan view, a back view, and a sectional view of a pedestal, and FIG. The figure is a front view showing the arrangement of the door and the opening formed therein, Figures 8 to 10 are cross-sectional views showing how the pedestal is attached to the door, and Figures 11 to 13 are the door and FIG. 14, which is a sectional view showing step by step how the handle is attached to the base, is a conceptual diagram for explaining the operation of the present invention. 10...Handle, 11...Base, 12...Handle portion, 13, 14...L-shaped engagement claw, 15, 16
...Small L-shaped engagement claw, 20...Pedestal, 21...
... Substrate, 23, 24... Openings formed in the third and fourth peripheral parts of the substrate 21, 25, 26... Substrate 2
an opening formed in the first peripheral portion of 1, 27, 28;
...L-shaped engaging claws 29, 29' projecting downward from the first and second peripheral edges of the substrate 21...Protrusions, 3
0...Electric refrigerator door, 31...Thin plate, 33,3
4, 37, 38...Openings that engage with the L-shaped engagement claws, 39, 39'...Openings that accommodate the protrusions 29, 29'.

Claims (1)

[Claims for Utility Model Registration] Consisting of a door of an electric refrigerator, a pedestal and a handle attached to the door, the pedestal includes a substantially flat substrate, a first portion of the substrate,
a plurality of L-shaped engaging claws protruding downward from the second peripheral edge and forming claws in the same direction; an opening formed near the first peripheral edge of the substrate;
The door includes an opening formed in a third and fourth peripheral edge portion located between the second peripheral edge portion, and a protrusion that projects downward from the substrate, and the door projects downward from the substrate of the pedestal. an opening that receives and engages the L-shaped engagement claw;
an opening or a recess for accommodating the protrusion that protrudes downward of the substrate when the L-shaped engagement claw received in the opening is moved to a position where it engages the peripheral edge of the opening; and the pedestal substrate. an opening that communicates with openings formed in the third and fourth peripheral edges of the handle, and the handle has a substantially flat base and a space between which the hand can be inserted. a handhold protruding from the base; and a handhold protruding downward from the base in the vicinity of the protruding end of the handhold and passing through and communicating with openings formed in the third and fourth peripheral edges of the substrate. a first L-shaped engagement claw that is engaged with an opening in the door; and a first peripheral edge of the substrate that protrudes downward from the base on the other side of the base and elastically deforms the base and the substrate. passing through an opening formed in the first part and causing the handle to engage with the pedestal by canceling the elastic deformation after the passage;
A door and handle mounting structure for an electric refrigerator, comprising a second L-shaped engagement claw smaller than the L-shaped engagement claw.