JPS6113675Y2 - - Google Patents

Description

[Detailed description of the invention] This proposal relates to the structure of the door body of various kitchen furniture such as sinks and washstands, that is, the structure of the hollow door body made of a door front plate and a back plate made of thin plates such as stainless steel plate, which are laminated together. It is easy to laminate, and when laminate, the surface is
The door body has a strong and durable laminated structure that completely prevents damage to the surface treatment such as enamel due to local strain on both back plates, or deflection that occurs on both the front and back plates. Utility Application No. 52-56115 and Utility Application No. 56115 related to the applicant's earlier application.
This is an improvement of No. 52-561166.

The structure of conventional hollow door bodies was such that the top plate and back plate were simply attached together with screws or bolts or nuts, so tightening caused local tightening around the screw holes in the top plate. When force is applied, and since the top plate is a thin plate, it easily deforms and causes distortion, which damages the surface treatment such as the enamel around the screw hole, making it more likely to rust. Due to the local strain that occurs in each screw or bolt tightening part, if any of the screw fastening parts loosens due to the impact when opening and closing the door, the whole top plate or back plate will be bent or otherwise distorted. In addition, when using screws, bolts, or nuts as described above, the screw holes on the top and back plates must be perfectly aligned to avoid any dimensional errors, as described above. However, there is a drawback that distortion such as deflection occurs in the top plate or the back plate, and extremely high dimensional accuracy is required to form each screw hole, making the work complicated and troublesome.

Furthermore, glaze adheres to or penetrates into the screw holes during the surface treatment process of the top plate, and the screw holes become degreased during firing, making it difficult and incomplete to tighten the screws.

Furthermore, when tightening with bolts or nuts, the nut is located in the hollow part of the door body, so the nut must be fixed to the bent edge of the top plate in advance, or a notch must be formed in the back plate and the hand inserted through the notch. The nut must be held, making the work even more troublesome.

In order to eliminate the above-mentioned conventional drawbacks, the applicant of the present application proposed in the previous utility model registration application that a holder is fitted to the bent edge of the front plate when the front plate and the back plate are integrated, and the holder and the back plate are fitted together. By screwing the front and back plates together and bonding them together, screw holes can be drilled in the front plate and both the front and back plates can be directly screwed together, just like the conventional door body described above. Or, it was devised to solve the various drawbacks of the bolted and pasted structure.

However, in the inventions of the above-mentioned two prior applications, the holder is long enough to simply fit onto the bent edge of the top plate, and therefore the packing interposed between the back plate and the holder loses even a little elasticity after long-term use. If the screws are lost, the tightening force between the back plate and the holder by the screws will loosen, which will cause the holder to wobble by the difference between the inside diameter of the mounting hole drilled in the bent edge and the outside diameter of the screws, and the holder will become loose. Since the wall thickness of the door itself is quite thick, the door itself becomes thick and does not have an unsightly appearance, but also has a considerable influence on the mounting structure to the main body of the kitchen return furniture.

Furthermore, although the holder is attached over almost the entire length of the bent edge of the top plate, the original function of the holder as described above is shown by the length of the tightening part with the screw, and the other parts are unnecessary. This causes high costs.

The door body of the present invention, which was developed in view of the above, eliminates the drawbacks of the conventional door body and the door body related to the applicant's earlier application as described above.

To explain in detail below with reference to the attached drawings, the peripheral edge of the top plate 1 is bent to form a bent edge 2 at a predetermined interval P between it and the back surface of the front plate 1, and the bent edge 2 is formed at predetermined intervals. A notch 3 for fitting the holder is formed in the holder.

Next, the holder 4 for integrating the front plate 1 and the back plate 7 is molded mainly by integral molding of synthetic resin, and its structure is such that the overall shape is approximately a rectangular parallelepiped, and the height of the rectangular parallelepiped is H. is made slightly higher than the distance P between the back surface of the top plate 1 and the bent edge 2, and the holder 4 is forcibly fitted between the back surface of the top plate 1 and the bent edge 2, by the restoring elasticity generated in the bent edge 2. In addition to ensuring that the holder 4 is held with clamping pressure, the upper surface of the holder 4 includes
A protrusion 5 extending vertically through the screw hole 5a is integrally provided.

The protrusion 5 can be fitted into the notch 3 formed in the bent edge 2, and has a height h that is smaller than the top plate 1.
The curved edge 2 is slightly protruded from the upper surface of the bent edge 2.

Next, the packing 6 consists of a mounting part 6a inserted between the bent edge 2 of the top plate 1 and the back plate 7, and a buffer part 6b covering the side edge of the outer surface of the back plate 7 (i.e., the back surface of the door body),
The mounting portion 6a has long holes 6 for mounting at predetermined intervals.
A notch is formed at a' and the wall thickness I is formed to a predetermined thickness. That is, as shown in FIG. 4, the thickness of the packing is taken into consideration so that a predetermined gap J is created between the upper surface of the protrusion 5 of the holder 4 and the back plate 7 before the front and back plates are tightened.

Next, the back plate 7 has mounting holes 7a formed in its peripheral edge, and a connecting member 8 for connecting to a main body such as kitchen furniture at a predetermined position on the outer surface.

The proposed door body is made by combining the above-mentioned components, and first, the holders 4 are forcibly fitted into the respective notches 3 of the bent edge 2 of the top plate 1, and then the holders 4 are fitted through the packing 6. Overlap the back plates 7 and screw the screws 9...
are inserted into the mounting hole 7a, the elongated hole 6a', and the screw hole 5a, respectively, through the state shown in FIG. to compress the packing 6 until the above-mentioned gap J disappears, that is, the upper surface of the protrusion 5
Complete the molding of the door body by tightening it until it makes contact with the door body.

Considering the thickness of the packing 6 and the height of the protrusion 5 of the holder 4, a gap J is created between the upper surface of the protrusion 5 and the back plate 7 before tightening with the screws 9, and when the screw tightening is completed, a gap J is created between the top surface of the protrusion 5 and the back plate 7. As shown in Fig. 5, the gap J is eliminated and the back plate 7 and the top surface of the protrusion 5 are brought into contact with each other. Once completed, no further tightening is possible, and therefore each screw fastening part is tightened uniformly, so that the top plate 1 and the back plate 7 are completely integrated,
It is possible to completely eliminate disadvantages such as unevenness in the degree of tightening of each tightening part and the resulting loosening of the packing and sagging of the top plate as in the conventional and prior applications.

The notch 3 and the elongated hole 6a' of the packing 6 are
As shown in FIG. 5, since the diameter is large, even if there is some misalignment between the mounting hole 7a of the back plate 7 and the screw hole 5a of the holder 4 when tightening with the screw 9, the holder 4 can be moved forward, backward, left and right. The screw hole 5a can be easily and reliably aligned with the mounting hole 7a by simply sliding it in either direction.

In addition, in the above structure, 10 represents a washer. Further, the present invention is not limited to the above-described configuration; for example, the shape of the holder 4 may be made into a shape other than a rectangular parallelepiped, or the bent edge 2 of the top plate 1 and the holder 4 may be formed into a gently arcuate cross section. Alternatively, a hanging protrusion or the like may be provided on the upper surface of the holder and the lower surface of the bent edge.

The proposed door body constructed as described above is as follows: (a) By screwing the holder 4 and the back plate 7 together, both the front and back plates are pasted together, so that the front plate can be attached to the front plate like a conventional door body. There is no direct screwing and therefore there are no disadvantages as mentioned above.

b Furthermore, since each holder 4 is held by the restoring elasticity of the bent edge 2 of the top plate 1, there is no risk of the holder 4 falling off from the top plate 1 when assembling the door body, and the top plate 1 Since it is fitted between the back surface and the bent edge 2, there is no need to worry about the door body becoming thicker.

c Each holder 4 does not need to be long along the bent edge as in the applicant's previous application, and the above-mentioned action can be performed at each tightening part by the screw 9, so it can be small and short. Moreover, unlike the holder of the previous application, there is no need for a complicated and troublesome structure in which long grooves are formed in the holder itself to impart clamping elasticity, resulting in lower costs in terms of materials, processing, etc.

Therefore, strict accuracy is not required when forming the mounting hole 7a on the back plate 7, and it facilitates drilling and assembly, and also allows the holder 4 to rotate together when the screw 9 is tightened by fitting the notch 3 and the protrusion 5. There are various advantages such as being able to prevent this by using a joint support.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway back view showing an example of the door of the present invention. FIG. 2a is a back view showing an example of the front plate 1. Second
Figure b is a sectional view taken along line AA in Figure 2a. FIG. 3 is an exploded perspective view of the main part of the proposal. FIG. 4 is a vertical sectional view of the main part before tightening. FIG. 5 is a vertical sectional view of the main part when tightening is completed. FIG. 6 is a sectional view taken along line BB in FIG. 1. 1... Top plate, 2... Bent edge, 3... Notch, 4...
...Holder, 5...Protrusion, 6...Packing, 7
... Back plate, 8 ... Connecting member, 9 ... Screw, 10 ...
…watsiyah.

Claims (1)

[Claims for Utility Model Registration] 1. A holder 4 for connecting both the front and back plates is forcibly fitted between the bent edge 2 formed on the peripheral edge of the top plate 1 and the back surface of the top plate, and the bent edge 2 A door for a sink, a washstand, etc., which is made by stacking a back plate 7 on top of the top and attaching both the front and back plates together by screwing the back plate 7 and the holder 4 together. 2 A protrusion 5 is provided on the upper surface of the holder 4, and the protrusion 5
A door for a sink, a washstand, etc., according to claim 1, which is fitted into a notch 3 formed at a predetermined position of a bent edge 2. 3 The height of the protrusion 5 is such that it slightly protrudes from the bent edge 2, and the upper surface of the protrusion and the back plate are in close contact with each other when screwing is completed, as described in claim 2 of the utility model registration claim. Doors of sinks, washstands, etc.