JP5435652B2 - Elastic leg peeling prevention structure and elastic leg bonding method - Google Patents

Description

  The present invention is made of rubber that is adhered to the lower surface of a device placed on a desk such as a desk phone or personal computer, so that when the device is placed on the desk, the device is stably placed on the desk. In particular, the present invention relates to a structure that prevents the elastic leg from being peeled off from the lower surface of the device.

  In the case of a desk phone, in many cases, a total of four elastic legs of this type are provided, one at each of the four corners of the lower surface. In a telephone having a tilt angle adjusting leg for adjusting the tilt angle of the liquid crystal display on the front surface, two of the four elastic legs in total are at the lower end of the tilt angle adjusting leg, and the other two are on the telephone body. Each is provided on the lower surface.

  In paragraphs 0005 and 0006 of Patent Document 1 (Japanese Utility Model Publication No. Hei 6-69466), referring to FIGS. 5 and 6, respectively, conventional rubber elastic legs (referred to as "rubber feet" in Patent Document 1). The structure is disclosed. These elastic legs have a flat fixing surface, and the flat fixing surface is bonded to a flat leg mounting surface on the lower surface portion of the device with double-sided tape, and is fixed to the device.

6-69466 (paragraphs 0005 and 0006 and FIGS. 5 and 6)

  As described in Patent Document 1, in a structure in which an elastic leg made of rubber or the like is adhered to a flat leg mounting surface on the lower surface portion of the device with a flat fixing surface of the elastic leg with double-sided tape, the elastic leg is peeled off. Or easily shift to the side.

  In particular, in the above-described desk phone having an inclination angle adjustment leg, the weight direction of the telephone is not perpendicular to the boundary plane between the flat leg mounting surface and the flat fixing surface of the elastic leg on the lower surface of the telephone. A force component of the weight of the telephone is applied in the direction parallel to the boundary between the flat leg mounting surface and the flat fixing surface of the elastic leg on the lower surface. When a force is applied in a direction parallel to the adhesive surface between the telephone and the elastic leg, the elastic leg is likely to cause a lateral shift or peel off from the telephone.

  In order to prevent such lateral shift and peeling, it is necessary to increase the bonding area between the device and the elastic leg, or to use a double-sided tape with high adhesive strength. However, when the bonding area between the device and the elastic leg is increased, the device design is restricted, the appearance of the device is easily damaged, and the unit price of the device is increased. In addition, when a double-sided tape with high adhesive strength is used, the unit manufacturing cost of the device increases.

(Object of the present invention)
Then, an object of this invention is to provide the elastic leg peeling prevention structure and method which prevent that the elastic leg adhere | attached on the lower surface part of the apparatus peels.

  In order to solve the above-mentioned problems, the elastic leg peeling preventing structure and the elastic leg peeling preventing method according to the present invention mainly adopt the following characteristic configuration.

(1) The elastic leg peeling preventing structure according to the present invention is such that the fixing surface of the elastic leg is adhered to the leg mounting surface provided on the lower surface portion of the device with double-sided tape, and the fixing surface is peeled off from the leg mounting surface. Elastic leg peeling prevention structure to prevent
A recess having an opening in the fixing surface is provided in the elastic leg,
Protrusions that fit into the recesses are provided on the leg mounting surface,
The double-sided tape bent along the inner peripheral surface of the concave portion from the edge of the opening bonds the outer peripheral surface of the convex portion and the inner peripheral surface.
(2) In the elastic leg peeling preventing method according to the present invention, the fixing surface of the elastic leg is bonded to the leg mounting surface provided on the lower surface portion of the device with double-sided tape, and the fixing surface is peeled off from the leg mounting surface. An elastic leg peeling prevention method for preventing
A concave portion having an opening on the fixing surface is provided on the elastic leg, and a convex portion that is fitted into the concave portion is provided on the leg mounting surface, respectively,
Adhering the double-sided tape to the fixing surface, providing a cut in the double-sided tape of the portion covering the opening,
The tip of the convex part is brought into contact with the notch, and the double-sided tape of the part covering the opening is bent and pushed into the concave part from the edge of the opening by the convex part, and the double-sided tape of the part covering the opening is pushed. The outer peripheral surface and the inner peripheral surface are bonded together by being sandwiched between the outer peripheral surface of the convex portion and the inner peripheral surface of the concave portion.

  According to the elastic leg peeling prevention structure and method of the present invention, it is possible to provide an elastic leg peeling prevention structure and method for preventing the elastic leg bonded to the lower surface portion of the device from peeling off.

It is a figure which shows the elastic leg peeling prevention structure and method which are one embodiment of this invention. It is a figure which shows the outline | summary of the elastic leg peeling prevention structure of FIG. It is a top view which shows the double-sided tape in the elastic leg peeling prevention structure of FIG. FIG. 2 is an enlarged view of FIG.

  Preferred embodiments of the elastic leg peeling preventing structure and method according to the present invention will be described below with reference to the accompanying drawings.

(Features of the present invention)
Prior to the description of the embodiments of the present invention, an outline of the features of the present invention will be described first. The elastic leg peeling prevention structure according to the present invention adheres the fixing surface of the elastic leg to the leg mounting surface provided on the lower surface portion of the apparatus with double-sided tape, and prevents the fixing surface from peeling off from the leg mounting surface. The structure is a structure in which a concave portion having an opening on the fixing surface is provided on the elastic leg, and a convex portion that fits the concave portion is provided on the leg mounting surface, and is bent along the inner peripheral surface of the concave portion from the edge of the opening. A double-sided tape bonds the outer peripheral surface of the convex portion and the inner peripheral surface. In this structure, since the concave portion of the elastic leg is fitted to the convex portion of the elastic leg, there is no risk of lateral displacement, and the double-sided tape bent from the edge of the opening of the elastic leg along the inner peripheral surface of the concave portion is convex. Since the outer peripheral surface of the part and the inner peripheral surface of the recess are bonded, it is possible to prevent the elastic legs bonded to the lower surface of the device from being peeled off.

As described above, FIG. 1 is a diagram showing an elastic leg peeling prevention structure and method according to an embodiment of the present invention, FIG. 2 is a diagram showing an outline of the elastic leg peeling prevention structure of FIG. 1, and FIG. FIG. 4 is an enlarged view of FIG. 1D, showing a plan view of a double-sided tape in an elastic leg peeling prevention structure.

  In the figure, 1 is a rubber leg (corresponding to the above-mentioned elastic leg), 1a is a taper hole (corresponding to the above-mentioned recess) provided in the rubber leg 1, 2 is a double-sided tape, 2x, 2y is a double-sided tape 2 Incisions provided 3 are taper protrusions (corresponding to the above-mentioned convex portions), 4 is a rubber leg fixing bottom surface (corresponding to the above-mentioned leg mounting surface), 5, 6, 7 and 8 are rubber leg mounting portions, 5a Denotes an inner wall of a cylindrical recess in the rubber leg mounting portion 5, 100 telephone, 100a denotes a casing of the telephone 100, and 101 denotes a tilt angle adjusting leg of the telephone 100.

  2A is a perspective view of the telephone 100, and FIG. 2B is a perspective view of the telephone 100 drawn so that the back surface appears. The telephone 100 includes a tilt angle adjusting leg 101. Rubber leg mounting portions 5 and 6 are provided at two corners on the bottom surface side of the casing 100 a of the telephone 100, and rubber leg mounting portions 7 and 8 are provided at both left and right ends of the lower end of the tilt angle adjusting leg 101. . The rubber leg attaching portions 5 to 8 have the same structure.

  FIG. 2C is an enlarged view of a portion in a circle 200 in FIG. 2B, and shows details of the rubber leg mounting portion 5 in the telephone 100. FIG. The rubber leg mounting portion 5 has a cylindrical shape, and the bottom inside the cylinder forms the rubber leg fixed bottom surface 4. A taper protrusion 3 is provided at the center of the rubber leg fixed bottom surface 4. The taper protrusion 3 has a taper tapered from the rubber leg fixed bottom surface 4 in a conical shape. The axis of the taper protrusion 3 is perpendicular to the rubber leg fixed bottom surface 4.

  FIG. 2D is a perspective view of the rubber leg 1 to which the double-sided tape 2 is bonded. The shape of the rubber leg 1 is a cylindrical side wall, a plane perpendicular to the axis of the cylindrical shape, one end surface of the cylindrical shape, and a surface to which the double-sided tape 2 is bonded (the aforementioned fixing surface) , And is defined by a rounded end surface forming the other end surface of the cylindrical shape and a tapered hole 1a provided coaxially with the cylindrical shape. As shown in the enlarged view (plan view) of FIG. 3, the double-sided tape 2 is provided with cuts 2x and 2y at the center. The double-sided tape 2 is bonded to the rubber leg fixing bottom surface 4 and the fixing surface of the rubber leg 1 in the rubber leg mounting portion 5, and the rubber leg 1 is attached to the telephone 100 by bonding the rubber leg fixing bottom surface 4 and the fixing surface. It is attached. In the cuts 2x and 2y, the double-sided tape 2 is cut from the front surface to the back surface. The directions of the cuts 2x and 2y are orthogonal to each other, and the cuts 2x and 2y form a cross-shaped cut.

  FIG. 1A is a perspective view of the telephone 100 slightly enlarged from FIG. FIGS. 1B to 1E show the assembly process of the present embodiment and the structure of each member. In FIGS. 1C to 1E, the rubber leg 1 is cut along a plane passing through the axis of the tapered hole 1a. The hatching attached to the rubber leg 1 in FIGS. 1C to 1E shows a cross section cut along the plane.

  As often shown in FIG. 1C, the tapered hole 1a has an opening on the fixing surface of the rubber leg 1 (the surface to which the double-sided tape 2 is bonded). The taper hole 1a has a taper tapered from the opening into a conical shape. The axis of the tapered hole 1a is perpendicular to the fixing surface. The shape of the tapered hole 1 a corresponds to the shape of the tapered protrusion 3. That is, if the angle formed between the shaft and the tapered side wall in the taper hole 1a is the taper angle θ, the taper angle θ is the angle ψ (the taper angle of the taper projection 3) formed between the shaft and the tapered side wall in the taper projection 3. Equally, θ = ψ. The depth (axial length) of the tapered hole 1 a is slightly larger than the axial length of the tapered protrusion 3.

  In the step of attaching the rubber leg 1 to the rubber leg attaching portion 5 of the telephone 100, the double-sided tape 2 is bonded to the fixing surface of the rubber leg 1. Then, the notches 2x and 2y that intersect at a point on the double-sided tape 2 through which the extension of the axis of the tapered hole 1a in the rubber leg 1 passes are put into the double-sided tape 2, and a cross-shaped cut is formed in the double-sided tape 2. Next, the rubber leg 1 in which the double-sided tape 2 with the cross-shaped cut is bonded to the fixing surface in this manner is used, and as shown in FIG. 1B, the axis of the taper hole 1a is approximately the axis of the taper protrusion 3. Holding in the matching orientation (FIGS. 1B and 1C), the rubber leg 1 is brought close to the rubber leg mounting portion 5, and the tapered protrusion 3 is inserted into the tapered hole 1a (FIG. 1D). The taper hole 1a and the taper protrusion 3 are fitted (FIG. 1E).

  In the step of shifting from the state of FIG. 1C to the state of FIG. 1D, that is, the step of bringing the rubber leg 1 close to the rubber leg mounting portion 5, the notches 2x and 2y in the cruciform cut of the double-sided tape 2 As the intersection comes into contact with the tip of the taper protrusion 3 and the taper protrusion 3 is gradually inserted into the taper hole 1a, the portion of the double-sided tape 2 covering the opening of the taper hole 1a is bent at the edge of the opening. It is pushed into the tapered hole 1a from the opening and is sandwiched between the outer peripheral surface of the taper projection 3 and the inner peripheral surface of the taper hole 1a, and the outer peripheral surface of the taper projection 3 and the inner peripheral surface of the taper hole 1a are bonded. Reference numerals 2a and 2b in FIG. 4 are bent at the edge of the opening of the tapered hole 1a, pushed into the tapered hole 1a from the opening, and sandwiched between the outer peripheral surface of the tapered protrusion 3 and the inner peripheral surface of the tapered hole 1a. The part of the double-sided tape 2 that covers the opening of the tapered hole 1a in the process up to this point is shown.

  As described above, the depth (axial length) of the tapered hole 1a is slightly larger than the axial length of the tapered protrusion 3, so that the gap between the outer peripheral surface of the tapered protrusion 3 and the inner peripheral surface of the tapered hole 1a is small. The taper protrusion 3 is inserted deeply into the taper hole 1a until the double-sided tape 2 is strongly pressed. When the taper protrusion 3 is inserted deeply into the taper hole 1a until the portion of the double-sided tape 2 covering the opening of the taper hole 1a is strongly compressed between the outer peripheral surface of the taper protrusion 3 and the inner peripheral surface of the taper hole 1a. Further, the radius of the opening of the taper hole 1 a is the root of the taper projection 3 so that the double-sided tape 2 outside the opening of the taper hole 1 a is adhesively bonded to the rubber leg fixing bottom surface 4 in the rubber leg mounting portion 5. It is designed to be larger by the thickness of the double-sided tape 2 than the radius of (the end of the taper protrusion 3 on the rubber leg fixing bottom surface 4 side).

  In the embodiment described above, the double-sided tape between the outer peripheral surface of the taper protrusion 3 and the inner peripheral surface of the taper hole 1a when the telephone 100 is placed on a desk and the weight W of the telephone 100 is applied to the rubber leg 1. 2a and 2b always receive the pressure by the weight W. Further, the pressure becomes W / sin θ due to the action of the aforementioned taper angle θ (= ψ), which is larger than the weight W. For example, when θ = 7.5 degrees, 1 / sin θ is 7.7. Therefore, the adhesive strength between the outer peripheral surface of the taper protrusion 3 and the inner peripheral surface of the taper hole 1a becomes very strong, and the rubber leg 1 is prevented from peeling off from the telephone 100. Further, since the taper protrusion 3 is fitted in the taper hole 1 a, the rubber leg 1 does not cause a lateral shift with respect to the telephone 100.

  As mentioned above, in order to make an understanding easy, although embodiment was mentioned and this invention was demonstrated concretely, of course, this invention is not limited to this embodiment. For example, in the above-described embodiments, the device is described as a telephone. However, the present invention is not limited to a telephone, and a very large number of desktop devices such as a keyboard in a desktop personal computer, a notebook personal computer, and a charger for a mobile phone are used. It can be applied to equipment.

DESCRIPTION OF SYMBOLS 1 Rubber leg 1a Tapered hole provided in rubber leg 1 Double-sided tape 2x, 2y Cut 3 provided in double-sided tape 2 Tapered protrusion 4 Rubber leg fixed bottom 5, 6, 7, 8 Rubber leg attachment part 5a Rubber leg attachment Inner side wall 100 of cylindrical recess in section 5 Telephone 100a Case 100 of telephone 100 Tilt angle adjustment leg of telephone 100

Claims (8)

The fixing surface of the resilient legs to the leg mounting surface provided on the lower surface of the device utilizing the adhesive double-sided tape, wherein the fixing surface is a resilient leg peeling prevention structure to prevent the peeling from the leg attachment surface,
It said fixing surface, concave portion having a taper that tapers conically from the opening is set vignetting,
No taper corresponding to the recess, setting vignetting fitted convex portion to the concave portion is the leg mounting surface,
The double-sided tape is bonded to the fixing surface, a cut portion formed in a portion covering the opening is spread by the convex portion, a peripheral portion of the cut portion is bent at an edge of the opening, and the convex portion And an elastic leg peeling prevention structure characterized by being sandwiched between the recess and the recess . The prior SL-sided tape, elastic leg peeling prevention structure of claim 1, previously cut the opening in the covering cormorants portion characterized that you have form shape.   3. The elastic leg peeling preventing structure according to claim 2, wherein the cut as viewed from a direction orthogonal to the fixing surface has a cross shape. The elastic leg peeling prevention structure according to any one of claims 1 to 3, wherein a conical axis of the recess is perpendicular to the fixing surface.   The elastic leg peeling prevention structure according to any one of claims 1 to 4, wherein the elastic leg is made of rubber. The fixing surface of the elastic leg a bullet Seiashi adhesive how to adhesive double-sided tape to the leg mounting surface provided on the lower surface of the instrument,
Have a opening to said fixing surface, a recess forming a taper that tapers conically from the opening in the resilient legs,
No taper corresponding to the recess, setting a fitting that protrusion in the recess on the leg mounting surface,
Adhering the double-sided tape provided with a cut in the portion covering the opening to the fixing surface ,
The double-sided tape pushing bent in the recess from the edge of the opening, the outer peripheral surface and the concave portion of the double-sided tape of the portion covering the opening the convex portion of the part covering the front Symbol opening at the tip of the front Kitotsu portion by sandwiching between the inner peripheral surface of adhering the said inner peripheral surface and the outer peripheral surface,
An elastic leg bonding method characterized by the above. The elastic leg bonding method according to claim 6, wherein the incision viewed from a direction orthogonal to the fixing surface has a cross shape. The elastic leg bonding method according to claim 6, wherein the conical axis of the recess is perpendicular to the fixing surface.

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