JPH0126332Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for attaching anti-slip rubber fittings to the bottom of the legs of cooking appliances, etc. used in general households.

Conventional configurations and their problems Generally, when using a cooker on a cooking table or dining table at home, it is convenient to prevent the cooker from slipping off the countertop and to stabilize the cooker during cooking. Molded rubber parts are attached to the bottom of the legs to prevent slipping. Conventionally, when installing this rubber fitting, the first
The configuration was as shown in FIGS. 2 and 3. In the first conventional example shown in FIGS. 1 and 2, reference numeral 1 is a leg of a cooker, etc., with a concave hole 2 provided on the bottom surface, and several ribs 3 formed inside the hole 2. There is. The synthetic rubber tool 4 inserted into the hole 2 has a brim-shaped head 6 on the lower surface of the columnar part 5, and has a protrusion 7 on the lower surface that facilitates contact with the uneven surface on the dining table. . The columnar portion 5 is formed to be smaller than the hole 2 and larger than the inscribed diameter of the rib 3, and when inserted into the hole 2, is held by the rib 3 by the elastic force of the rubber.

However, in this configuration, the holding force of the press-fitted rubber tool 4 is ensured by the frictional force caused by the rubber elasticity of the arcuate surface in contact with the rib 3, as shown in FIG. 2 (X-X cross-sectional view in FIG. 1). However, when considering the work of attaching the rubber fittings 4 to the legs 1, if the press force for attachment is made easier, the holding force becomes smaller and the rubber fittings 4 become easier to come off.Therefore, there is a conflict between the installation workability and the holding force performance. In a relationship. Therefore, based on the fact that the formation of the ribs 3 is made larger and the friction surface with the columnar part 5 is set larger, the diameter of the columnar part 5 and the hardness of the rubber tool 4 are determined based on the inscribed diameter of several ribs 3 to improve the workability. Generally, settings were made to optimize the holding force performance and the holding force performance.

However, the rubber tool 4 made of a synthetic rubber molded product is
It is a material with relatively large variations in hardness and dimensional accuracy, making it difficult to obtain stable holding force performance, and it has a structural drawback that something press-fitted will come out.

For this reason, there is a method of applying an adhesive to the columnar portions 5 or the ribs 3 and bonding them, but this method is completely inefficient. In addition, the columnar portion 5 requires a suitable length due to the need to obtain an appropriate holding force, and the diameter of the columnar portion 5 is necessarily required to be large due to the nature of the rubber elastic body that can withstand press force. As a result, the shape of the rubber tool 4 becomes large, resulting in a disadvantage of high cost.

To address the above-mentioned drawbacks, as in the second conventional example shown in FIG. A type having a flange-shaped inner head 13 on the upper surface of the portion 12 and a flange-shaped outer head 14 on the lower surface is also used. The inner head 13 of the rubber tool 11 is thicker than the lower hole 10 and thinner than the upper hole 9,
Moreover, the columnar portion 12 is set to be thinner than the prepared hole 10. To attach the rubber member 11 to the leg 8, when the inner head 13 is press-fitted into the prepared hole 10 and passed through, it is positioned in the upper hole 9 and held by the inner head 13, which is thicker than the prepared hole 10.

However, in this configuration, in order to attach the rubber fitting 11 made of a synthetic rubber molded product by press-fitting it to the leg 8,
The height of the columnar part 12 needs to be longer than the height of the prepared hole 10, and the attached rubber fitting 11 will be in a shaky state. In order to prevent this installation instability, if the above-mentioned dimensional difference is set small, the installation workability will increase. Moreover, when forming the stepped holes of the upper hole 9 and lower hole 10 of the leg 8 made of phenolic resin, etc., the mold part line surface is required to be the upper diameter part 15 or the lower diameter part 16 of the pilot hole 10. . Since it is located in the middle of the upper diameter part 15, the workability for deburring the molding is poor, and if it is provided in the lower diameter part 16, the inlet part into which the rubber fitting 11 is press-fitted becomes an edge, making the workability of press-fitting and mounting difficult. As mentioned above, although the second conventional example (shown in FIG. 3) has a good effect of preventing it from coming off, it has the disadvantage of poor mounting condition and poor mounting workability. Moreover, from a cost perspective, the rubber tool 11 has a brim-like inner and outer head 1 at the top and bottom.
3 and 14, which increases the cost of rubber molding and molding, and the columnar part 12 is a part of the inner head 13.
Since it requires a thickness that can withstand the pressure-fitting elasticity of the material, it requires a certain size or more, and has the drawback of not being able to be made cheap in terms of material cost.

Purpose of the Invention In view of the above-mentioned drawbacks, the present invention provides an inexpensive attachment device for anti-slip rubber fittings that can be easily attached to a rubber fitting, can be held securely, and will not fall off.

Structure of the invention In order to achieve the above-mentioned object, the device for attaching a non-slip rubber tool to an appliance of the present invention has a column-shaped rubber tool and a leg for cooking, etc., the leg has a pilot hole on the lower surface, and A rib is provided on the inside of the pilot hole, and the upper surface of the leg is formed as described above to butt against the rib portion, and the upper hole has a missing portion where the upper end of the rib is missing, and the rubber fitting is attached to the bottom of the leg. The rubber tool is inserted into the hole and held in pressure contact with the ribs, and the rubber tool is positioned in the rib missing portion by elastic recovery to prevent the rubber tool from coming off.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below. In Figs. 4 to 6, 20 is a cooking device such as a hot plate, 21 is a handle made of synthetic resin of this cooking device, and has legs 22. Rubber fittings 23 made of synthetic rubber are attached to the bottom of the legs. When the cooking device 20 is placed on the table, the rubber tool 23 exhibits an anti-slip effect on the cooking device 20. The leg 22 has a pilot hole 24 on the lower surface.
The pilot hole 24 has a larger diameter than the rubber fitting 23 and is provided with at least one or more ribs 25 on the inside, so that the rubber fitting 23 is press-fitted into the pilot hole 24. 26 is the upper hole from the top of the leg,
It is located against at least one corner of the rib 25, and the upper part of the rib 25 forms a cutout 27 at the inner bottom of the upper hole 26. Said pilot hole 2
4 has a rib chamfer 28 on the lower mouth edge to facilitate press-fitting of the rubber fitting 23, and an upper hole 26.
The bottom surface 29 of the prepared hole that does not communicate with the hole serves as a press-fitting area for the rubber fitting 23.

Press-fitting and attaching the rubber fitting 23 to the leg 22 in the above configuration will be described.The rubber fitting 23 is press-fitted into the prepared hole 24 on the lower surface of the leg. The rubber tool 23 comes into contact with the bottom surface 29 of the prepared hole and stops. At this time, the portion corresponding to the missing portion 27 of the rib on one side of the upper part of the rubber member 23 recovers elastically and returns to its original thickness after being press-fitted, so that the effect of preventing the rubber member 23 from coming off is produced.

FIG. 7 shows another embodiment of the present invention, in which the upper hole 26 has a rectangular shape exceeding the diameter of the lower hole bottom 29, as indicated by the dotted line.

This example has a plurality of rib missing parts 27 on the opposite side, so it has a more balanced retaining effect, and the upper hole pin is large on the mold for manufacturing the legs, so it has the effect of preventing breakage. There is also.

FIG. 8 shows still another embodiment, in which a rubber fitting 30 has a collar-shaped head 32 on the lower surface of a columnar 31 and serves as an insertion point for installation, and an upper hole 26 is provided larger than a lower hole 25. Since all of the plurality of ribs provided on the inside of the rubber tool are provided with missing parts, there is a strong retaining effect, and the height of the pillars of the rubber tool can be lowered, which also has the effect of making an inexpensive rubber tool.

Effects of the Invention As is clear from the above embodiments, the rubber fitting attachment device of the present invention improves the workability of attaching the rubber fitting by providing a cutout through the upper hole in the rib provided inside the lower hole of the leg. It can be implemented as a separate element without conflicting relationship with the holding force performance, and in order to improve workability, the ribs can be made thinner and the hardness of the rubber tool can be made softer. Softening the hardness of the rubber tool improves its conformity with the tabletop surface due to its own weight when the device is placed on a sliding body on a tabletop, thereby increasing its effectiveness as a non-slip rubber tool.

The rubber tool pressed against the rib is held by the rib and can be securely attached. In addition, the missing rib portion ensures that the rubber tool does not come off, and the shape of the rubber tool can be set small, thereby providing an inexpensive rubber tool attachment device.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a first conventional rubber tool mounting leg, FIG. 2 is a cross-sectional view taken along line X-X in FIG. 1, and FIG. 3 is a cross-sectional view of a second conventional rubber tool mounting leg. Figure 4 is a cross-sectional view of a cooking appliance showing an embodiment of the present invention, Figure 5 is an enlarged cross-sectional view of the same main part, Figure 6 is a Y-Y cross-sectional view of Figure 5, and Figure 7 is a cross-sectional view of the cooking device according to the present invention. FIG. 8 is a sectional view of a rubber fitting mounting leg showing still another embodiment. 22... Leg, 23... Rubber fitting, 24... Pilot hole,
25... Rib, 26... Upper hole, 27... Missing part,
29...Bottom surface of prepared hole.

Claims (1)

[Scope of utility model registration request] A rubber tool is provided, in which a pilot hole is provided on the lower surface of the leg, at least one or more ribs are provided inside the pilot hole, and the upper hole provided on the upper surface of the leg is butted against the rib to form a missing part at the upper part of the rib. A device for attaching a non-slip rubber fitting to an instrument body, characterized in that the columnar portion is press-fitted into the prepared hole and held therein, and the upper portion of the columnar portion is elastically recovered in the rib missing portion.