JP3689965B2 - Push button, mounting method and cabinet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a push button used in an electronic apparatus, for example, a satellite broadcast receiver, a method for attaching the push button, and a cabinet to which the push button is attached.
[0002]
[Prior art]
Conventionally, as a push button structure using the elastic deformation of the hinge portion, for example, Japanese Utility Model Laid-Open No. 63-52231 and Japanese Utility Model Laid-Open No. 5-72025 have been proposed. In these configurations, the hinge part for operating the push button is provided directly only between the push button part and the frame, and the column for holding the object from the push button part is provided.
[0003]
In addition, the push button is attached to the cabinet or the like of the electronic device by welding the push button and the cabinet, or by forming the nail receiving portion by using the slide core in the mold for forming the cabinet, and the hook structure by the nail is used. .
[0004]
[Problems to be solved by the invention]
However, in the above configuration, the length dimension between the push button portion and the frame is shortened as the electronic apparatus is downsized. This means that the hinge part is elastically deformed in a range where the curvature is small, and reliability such as breakage of the hinge part due to repeated load is lowered.
[0005]
In addition, the entire hinge part is elastically deformed around the hinge part frame side root, and the direction in which the push button surface is pressed moves close to an arc centered on the hinge part frame side root. For this reason, a feeling of operation worsens.
[0006]
In addition, since it operates in a direction to reduce the gap between the push button and the casing, a gap with a margin is required, and the design is significantly reduced.
[0007]
Furthermore, when the push button and the casing are separately molded with resin, it is necessary to provide a support for pressing a switch or the like on the back surface of the push button. This complicates the mold structure in order to avoid undercutting during molding, and there are problems such as an increase in mold cost, prolongation of production schedules, and difficulty in managing parts production.
[0008]
Further, when a separate push button is welded or bonded to the cabinet, the work becomes complicated and man-hours are required.
[0009]
An object of the present invention is to improve the life of the hinge part of the push button, the operational feeling, and the design, and to reduce the cost and shorten the production days.
[0010]
Also, no welding or adhesion is required when attaching the push button. Furthermore, it aims at making a slide core unnecessary in a cabinet molding die.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the push button of the present invention has a rectangular frame composed of a four-sided frame formed by thinning one side forming the bottom with respect to the other three sides. An extension surface formed by extending a part of the base in a direction perpendicular to the base, and an angle of the rectangular frame with an angle with respect to the extension surface in the direction of the base from the vicinity of the distal end of the extension surface. The frame includes a standing part formed on the inside and a push button part formed by connecting a push button surface to the standing part, and pressing the push button surface of the push button part reduces the thickness of the frame. The bottom portion is twisted and deformed with two adjacent sides as supporting shafts, and the erected portion generates a pressing force against the extended surface of the thinned bottom according to the torsional deformation, and the push button surface In the direction perpendicular to the direction of pressing In the serial extension surface is obtained so as to press the switch.
[0012]
Also, the method of attaching the push button to the cabinet of the present invention is to insert the push button into the notch portion of the cabinet while elastically deforming the frame portion with the projection provided on the frame portion of the push button as a guide. The protrusion is engaged with and fixed to the flange of the cabinet.
[0013]
Furthermore, the cabinet of the present invention uses a surface extending in a direction orthogonal to one side of the frame as a switch pressing surface, a push button surface is erected on the back surface of the switch pressing surface, and further on one main surface of the frame. A push button provided with a protruding portion is fitted into a substantially U-shaped cutout portion of the cabinet, and the protruding portion is engaged with and fixed to the flange portion of the cabinet.
[0014]
According to the present invention, welding or bonding work is not required when the push button is attached, and the repeated life of the hinge portion is improved. In addition, the slide core is not required in the cabinet mold. In addition, the cabinet to which this push button is attached can be made compact.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, a surface extending in a direction perpendicular to one side of the frame is a switch pressing surface, and an angle is set with respect to the extended surface from the vicinity of the distal end portion of the extended surface toward the bottom side. It is a push button characterized in that a standing part is formed inside the rectangular frame and a push button surface is erected on the back side of the switch pressing surface, improving the repeated life of the hinge part. is allowed, which was a push button, characterized in that the deformed twisted one side of the frame when pressing the pushbutton surface, has the effect of improving the cycle life of the hinge portion.
[0019]
The invention according to claim 2 is a method for attaching a push button to a cabinet, wherein the frame portion of the push button is elastically deformed and is inserted into and engaged with a notch portion of the cabinet. with readily Then it says act fitted and to the cabinet.
[0024]
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
(Embodiment)
1 is a perspective view of a push button 1 according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a cross-sectional view of a main part in a state in which the push button 1 of FIG. 4 is a perspective view of the main part of the upper cabinet 2 in one embodiment of the present invention, FIG. 5 is a perspective view of the main part before the push button 1 is attached to the upper cabinet 2, and FIG. 6 shows the push button 1 of FIG. The operation | movement explanatory drawing of the process attached to the upper cabinet 2 is shown.
[0025]
1 to 3, reference numeral 1 denotes a push button according to the present invention. 2 and 3 are a pair of upper and lower cabinets for storing electronic circuits and the like. 4 is a push button surface, 5 is a switch pressing surface, 6 is an extension portion, 7 is a standing portion, 8 is a bottom side that forms part of the frame, 8A is a vertical side that also forms part of the frame, and 9 is a printed wiring board. . A switch 10 is mounted on the printed wiring board 9. Reference numeral 11 denotes a frame (frame body), and reference numeral 12 denotes a protrusion provided symmetrically on one main surface of the frame, and has a pair of sloped surfaces 12A that form a C-shape.
[0026]
Reference numeral 15 denotes L-shaped ribs (guide rails) for guiding and supporting the frames (vertical sides 8A, 8A) on both sides when the push button is inserted. Reference numeral 16 denotes a substantially U-shaped cutout, which elastically deforms the frame (vertical sides 8A, 8A) inward through the protrusion 12 when the push button 1 is inserted into the cutout 16. It plays the role of a plate cam.
[0027]
Reference numeral 18 denotes a hook portion (hook portion) that forms a part of the cutout portion to lock the protrusion 12. Reference numeral 19 denotes a tapered portion that is chamfered to facilitate insertion of the push button.
[0028]
The push button 1 is made of a thermoplastic synthetic resin such as ABS or PS. ABS is advantageous in terms of elasticity, and PS is advantageous in terms of cost.
[0029]
A pair of upper and lower cabinets protecting the electronic circuit and the like are also made of a thermoplastic synthetic resin, for example, a member similar to a push button, ABS, PS, or the like. The upper cabinet 2 may be integrally formed with a plurality of the ribs 15 and the notches 16 at predetermined intervals. Reference numeral 17 denotes a decorative board.
[0030]
As shown in FIG. 3, the push button 1 is attached to the upper cabinet 2. As shown in FIG. 5, the attachment procedure can be performed by fitting from one direction. FIG. 6 shows an operation explanatory diagram of the process of attaching the push button 1 to the upper cabinet 2. That is, they are attached in the order of FIGS. 6 (a), (b), and (c). In FIG. 6A, the frames (vertical sides 8A, 8A) are not yet deformed. In the state of FIG. 6B, the slope 12A of the protrusion 12 is driven by the end face of the notch groove, and the frames (vertical sides 8A, 8A) are elastically deformed inward. FIG. 6C shows a state in which the push button is inserted to a predetermined depth of the notch, and the protrusion 12 is elastically returned to and engaged with the flange 18.
[0031]
The push button 1 is made of a resin molded product, and the lower surface of the extension 6 extending in a direction orthogonal to the bottom 8 of the frame 11 (rectangular in FIG. 2) is used as a switch pressing surface 5, and on the back surface of the switch pressing surface 5. A standing portion 7 is provided standing in a predetermined angular direction. An end portion of the standing portion 7 is a push button surface 4.
[0032]
The bottom 8 constituting the frame 11 is configured to be flexible (easily twisted) and elastically deformable with the vertical sides 8A and 8A serving as support shafts by thinning.
[0033]
Next, the switch operation of the push button 1 will be described.
When a person pushes the push button surface 4, the base 8 is twisted and bent with the vertical sides 8 </ b> A and 8 </ b> A as support shafts via the standing portion 7. When the base 8 bends, the switch pressing surface 5 located at the tip of the extension 6 extending in the direction orthogonal to the base 8 presses the switch 10 to operate.
[0034]
That is, the movement of the push button surface 4 and the switch pressing surface 5 seems to be 90 degrees different from each other. However, it actually operates integrally, and the switch pressing surface 5 performs an arc motion by the twisted deflection of the base 8 via the extension 6 and presses the switch 10 for a predetermined stroke. As a result, the contact of the switch 10 is switched.
[0035]
In the above description, the shape of the frame is not limited to a rectangle. For example, it is needless to say that the present invention may be arbitrarily implemented as long as it supports both sides of a side that is torsionally deformed, such as a triangle. Further, the protrusion is not limited to a triangular shape having a gradient, and the same may be applied to any shape such as a circle or an ellipse.
[0036]
【The invention's effect】
As described above, according to the present invention, welding or bonding work is not required when the push button is attached, and the repeated life of the hinge portion is improved . Et al. Is, miniaturization of the push button, by force is BRIEF DESCRIPTION OF THE DRAWINGS that it is possible to reduce the size of the equipment
1 is a perspective view of a push button according to an embodiment of the present invention. FIG. 2 is a front view of FIG. 1. FIG. 3 is a cross-sectional view of a main part in a state where the push button of FIG. 4 is a perspective view of the main part of the upper cabinet in one embodiment of the present invention. FIG. 5 is a perspective view of the main part before the push button is attached to the upper cabinet. FIG. 6 is a process of attaching the push button of FIG. Explanation of operation [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Push button 2 Upper cabinet 3 Lower cabinet 4 Push button surface 5 Switch pressing surface 6 Extension part 7 Standing part 8 Bottom side 8A Vertical side 9 Printed wiring board 10 Switch 11 Frame 12 Protrusion part 12A Gradient surface 15 Rib (guide rail)
16 Notch 17 Decorative plate 18 Ridge (hook)
19 Taper

Claims (2)

A quadrilateral frame composed of a four-sided frame formed by thinning one side forming the base with respect to the other three sides, and extending a part of the thinned base in a direction perpendicular to the base The extended surface formed, a standing portion formed inside the rectangular frame at an angle with respect to the extended surface in the direction from the vicinity of the distal end of the extended surface to the bottom surface, and a push button surface A push button part formed by connecting to the standing part, and by pushing the push button surface of the push button part, the thinned bottom side of the frame is twisted and deformed with the two adjacent sides as the supporting shafts. In response to the torsional deformation, the standing portion generates a pressing force on the thinned base extension surface, and the extension surface switches in the direction orthogonal to the direction in which the push button surface is pressed. It is special to be able to press Press the button.   2. The push button according to claim 1, wherein the frame forming the push button is inserted into and engaged with a notch portion of the cabinet while elastically deforming two frame portions adjacent to each other with the thinned bottom side thereof. How to attach to the cabinet.

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