JP2006024391A - Push button mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push-button mounting structure proceeded with a standardization of a design of push button. <P>SOLUTION: The push-button mounting structure is provided with a printed board 21 having a main surface 21a, a tact switch 22 formed on the main surface 21a, and a button forming plate 32 having a rear face 32b with a button tip part 34 fitted. The push-button mounting structure is further provided with a tact switch presser rib 41 formed on the rear face 32b so as to be positioned above the tact switch 22, and a tact switch presser rib 42 with an opposite face 42a and formed on the rear face 32b so as to be deviated from a position above the tact switch 22. The tact switch presser rib 42 includes a plurality of pressing parts 42p and 42q with an area in the opposite face 42a larger than at other positions. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates generally to a push button mounting structure, and more particularly to a push button mounting structure that is integrally formed by molding.

  As a conventional technique related to a push button mounting structure, for example, Japanese Patent Application Laid-Open No. 2000-340067 discloses a push button switch that is manufactured at a lower cost and has a reduced thickness (Patent Document). 1). In the push button switch disclosed in Patent Document 1, a soft plastic sheet is bonded to the surface of the push button facing the switch with a key top. The surface of the plastic sheet is flat on the side facing the keytop switch.

  Japanese Patent Application Laid-Open No. 2001-101952 discloses an operation button mounting structure for the purpose of easily attaching an electrical component after manufacturing the operation button (Patent Document 2). The operation button mounting structure disclosed in Patent Document 2 includes a printed circuit board on which electrical components are mounted, and a connecting rib formed integrally with an exterior component. A contact portion that collides with a contact piece of the electrical component is formed on the surface of the connecting rib facing the electrical component, and an operation button is formed on the opposite surface. The surface of the connecting rib on which the contact portion is formed and the surface of the printed board on which the electrical component is mounted extend in directions orthogonal to each other.

Furthermore, Japanese Patent Laid-Open No. 2003-288819 discloses an operation panel unit that aims to reduce costs and improve assemblability by using one switch button in common (Patent Document). 3). In the operation panel unit disclosed in Patent Document 3, the surface of the switch button facing the push switch is formed in a step shape.
JP 2000-340067 A JP 2001-101952 A JP 2003-288819 A

  A push button provided on an operation panel such as a television or a DVD (digital versatile disc) player is usually made of a resin material by injection molding using a mold. However, the position of the switching element pressed by the push button may be changed depending on the specifications of the device provided with the push button, electrical design requirements, or the like. In this case, if a pushbutton mold is produced each time according to the position of the switching element, there arises a problem that the mold cost increases and the design efficiency decreases.

  Accordingly, an object of the present invention is to solve the above-described problem and to provide a push button mounting structure in which the design of the push button is made common.

  A push button mounting structure according to one aspect of the present invention includes a printed circuit board having a main surface, a switching element formed on the main surface, and a surface facing the main surface with a gap therebetween. A button forming plate provided. The surface defines a first region located immediately above the switching element and a second region located offset from immediately above the switching element. The push button mounting structure further includes a first rib-like member formed on the surface so as to be positioned in the first region, and a facing surface facing the main surface with a gap provided in the second region. And a second rib-like member formed on the surface so as to be positioned. The second rib-like member includes a plurality of pressing portions in which the area of the facing surface is larger than other positions.

  The first rib-like member and the second rib-like member are formed continuously. The push button mounting structure further includes a hinge portion that connects the button forming plate to the support portion. When the push button is pressed and the hinge portion is bent, the first rib-shaped member and the switching element come into contact with each other. When the main surface is viewed from the front, the hinge portion, the push button, and the switching element are arranged substantially in a straight line.

  According to the push button mounting structure configured as described above, by pressing the push button, the first rib-shaped member and the switching element can be brought into contact with each other to operate the switching element. Further, even if it is assumed that the switching element is formed immediately below the second region, the pressing part of the second rib-shaped member and the switching element can be brought into contact with each other to operate the switching element. it can. For this reason, even when the position of the switching element on the printed board is changed by the second rib-shaped member formed on the surface in advance, it is not necessary to change the design of the button forming plate. At this time, since a plurality of pressing portions are provided on the second rib-shaped member, it is possible to flexibly cope with a change in position of the switching element. Thereby, the metal mold | die for producing a button formation board can be made shared, and metal mold | die cost can be reduced. Further, since it is not necessary to design the button forming plate each time according to the position of the switching element, the efficiency of the design work can be improved.

  Moreover, the 1st and 2nd rib-shaped member is formed in a row. For this reason, the strength of the button forming plate can be improved between the first region and the second region, and the switching element can be reliably pressed by the button forming plate.

  Further, since the hinge portion, the push button, and the switching element are arranged on a straight line, the hinge portion can be bent uniformly when the push button is pressed. Thereby, it is possible to press the push button without a sense of incongruity.

  A push button mounting structure according to another aspect of the present invention includes a printed circuit board having a main surface, a switching element formed on the main surface, and a surface facing the main surface with a gap therebetween. A button forming plate provided. The surface defines a first region located immediately above the switching element and a second region located offset from immediately above the switching element. The push button mounting structure further includes a first rib-like member formed on the surface so as to be positioned in the first region, and a facing surface facing the main surface with a gap provided in the second region. And a second rib-like member formed on the surface so as to be positioned. The second rib-like member includes a plurality of pressing portions in which the area of the facing surface is larger than other positions.

  According to the push button mounting structure configured as described above, by pressing the push button, the first rib-shaped member and the switching element can be brought into contact with each other to operate the switching element. Further, even if it is assumed that the switching element is formed immediately below the second region, the pressing part of the second rib-shaped member and the switching element can be brought into contact with each other to operate the switching element. it can. For this reason, even when the position of the switching element on the printed board is changed by the second rib-shaped member formed on the surface in advance, it is not necessary to change the design of the button forming plate. At this time, since a plurality of pressing portions are provided on the second rib-shaped member, it is possible to flexibly cope with a change in position of the switching element. Thereby, the metal mold | die for producing a button formation board can be made shared, and metal mold | die cost can be reduced. Further, since it is not necessary to design the button forming plate each time according to the position of the switching element, the efficiency of the design work can be improved.

  Preferably, the first rib-like member and the second rib-like member are formed continuously. According to the push button mounting structure configured in this way, the strength of the button forming plate can be improved between the first region and the second region, and the switching element can be reliably secured by the button forming plate. Can be pressed.

  Preferably, the push button mounting structure further includes a hinge portion that connects the button forming plate to the support portion. When the push button is pressed and the hinge portion is bent, the first rib-shaped member and the switching element come into contact with each other. When the main surface is viewed from the front, the hinge portion, the push button, and the switching element are arranged substantially in a straight line. According to the push button mounting structure configured as described above, the hinge portion can be bent uniformly when the push button is pressed. Thereby, it is possible to press the push button without a sense of incongruity.

  As described above, according to the present invention, it is possible to provide a push button mounting structure in which the design of the push button is made common.

  Embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 is a perspective view showing a DVD player to which a push button mounting structure according to Embodiment 1 of the present invention is applied. In the drawing, the front cover portion of the DVD player is shown in perspective. FIG. 2 is a side view of the DVD player as viewed from the arrow II in FIG.

  Referring to FIGS. 1 and 2, DVD player 10 is arranged in parallel with printed circuit board 21 at a position spaced from main surface 21a by means of printed circuit board (PCB) 21 having main surface 21a. And an operation panel 31. The operation panel 31 is integrally formed from a resin material by injection molding using a mold. The operation panel 31 is provided with a group of operation buttons that are operated to perform various functions of the DVD player 10.

  The operation panel 31 includes a support portion 31m and a button forming plate 32 extending in one direction from the support portion 31m via a button hinge 33. The button forming plate 32 is provided with a button tip 34 that is pressed when the tray is opened and closed. The button forming plate 32 has a front surface 32a and a back surface 32b which is located on the back side of the front surface 32a and faces the main surface 21a at a distance. The button tip 34 is formed integrally with the button forming plate 32 so as to protrude from the surface 32a. A tact switch 22 is mounted on the main surface 21 a of the printed circuit board 21. The tact switch 22 is disposed at a position where the button tip 34 is projected at a right angle onto the main surface 21a.

  FIG. 3 is a rear view of the DVD player taken along the line III-III in FIG. In FIG. 3, the button tip 34 hidden behind the button forming plate 32 is represented by a dotted line, and the tact switch 22 projected at a right angle on the back surface 32 b is represented by a two-dot chain line. With reference to FIGS. 2 and 3, a region 51 is defined at a position where the tact switch 22 is projected at a right angle on the back surface 32 b of the button forming plate 32, and a position where the tact switch 22 is projected at a right angle. A region 52 is defined at a position deviated from the region. That is, the tact switch 22 is provided on the main surface 21a of the printed circuit board 21 facing the region 51 of the back surface 32b, and the tact switch 22 is not provided on the main surface 21a facing the region 52. .

  On the back surface 32 b of the button forming plate 32, a tact switch pressing rib 41 having a pressing portion 41 p is formed in the region 51. The tact switch pressing rib 41 is formed integrally with the button forming plate 32 so as to protrude from the back surface 32b. The tact switch pressing rib 41 extends in a direction away from the button hinge 33, and further extends in a direction orthogonal to the direction away from the button hinge 33 at a position where the center position of the tact switch 22 is projected at right angles onto the back surface 32b. Ribs are formed to intersect. The pressing part 41p is formed at a position where the ribs intersect. The tact switch pressing rib 41 has a facing surface 41a extending in parallel with the main surface 21a at a position spaced from the main surface 21a.

  With such a configuration, when the button tip 34 is pressed, the button hinge 33 is bent, and the button forming plate 32 is displaced in a direction in which the back surface 32b approaches the main surface 21a. Thereby, the opposing surface 41a of the press part 41p and the tact switch 22 contact, and the tact switch 22 act | operates.

  A tact switch pressing rib 42 having pressing portions 42p and 42q is further formed on the back surface 32b of the button forming plate 32 so as to be positioned in the region 52. The tact switch pressing rib 42 is formed integrally with the button forming plate 32 so as to protrude from the back surface 32b. The tact switch pressing rib 42 extends continuously in a direction away from the button hinge 33 from the tact switch pressing rib 41, and further, ribs extending in a direction orthogonal to the direction away from the button hinge 33 are provided at two points along the extension. It is formed by crossing. The pressing portions 42p and 42q are respectively formed at positions where the ribs intersect.

  The tact switch pressing rib 42 has a facing surface 42a extending parallel to the main surface 21a at a position spaced from the main surface 21a. The facing surface 42a is formed on the same plane as the facing surface 41a, and the distance between the main surface 21a and the facing surface 42a is equal to the distance between the main surface 21a and the facing surface 41a. In the pressing portions 42p and 42q, the area of the facing surface 42a is larger than other portions where the ribs do not intersect.

  FIG. 4 is a side view of the DVD player when the position of the tact switch in FIG. 2 is changed. Referring to FIG. 4, in the figure, it is assumed that the position of tact switch 22 is changed to a position immediately below pressing portion 42p or 42q shown in FIG. In this case, the tactile switch 22 can be brought into contact with the facing surface 42a of the pressing portion 42p or 42q by pressing the button tip 34. For this reason, even when the tact switch 22 is moved directly below the region 52, the tact switch 22 can be operated without designing and deforming the button forming plate 32.

  Further, in the present embodiment, the tact switch pressing rib 41 and the tact switch pressing rib 42 are formed to be continuous, so that the strength of the button forming plate 32 can be improved between the region 51 and the region 52. it can. Accordingly, it is possible to prevent the button forming plate 32 from greatly warping when the button tip portion 34 is pressed, and the tact switch 22 can be reliably pressed by the button forming plate 32. The button hinge 33, the button tip 34, and the tact switch 22 are arranged on a straight line extending in a direction away from the button hinge 33 when the main surface 21a is viewed from the front. Thereby, the button hinge 33 can be bent uniformly and the button front-end | tip part 34 can be pushed down without a sense of incongruity.

  The push button mounting structure according to the first embodiment of the present invention faces a printed circuit board 21 having a main surface 21a, a tact switch 22 as a switching element formed on the main surface 21a, and a gap with the main surface 21a. A button forming plate 32 having a back surface 32b as a front surface and provided with a button tip portion 34 as a push button. On the back surface 32 b, a region 51 as a first region located immediately above the tact switch 22 and a region 52 as a second region located offset from directly above the tact switch 22 are defined. The push button mounting structure further includes a tact switch pressing rib 41 as a first rib-like member formed on the back surface 32b so as to be positioned in the region 51, and a facing surface 42a facing the main surface 21a with a gap. And a tact switch pressing rib 42 as a second rib-like member formed on the back surface 32 b so as to be positioned in the region 52. The tact switch pressing rib 42 includes a plurality of pressing portions 42p and 42q in which the area of the facing surface 42a is larger than other positions.

  The tact switch pressing ribs 41 and 42 are formed continuously. The push button mounting structure further includes a button hinge 33 as a hinge portion that connects the button forming plate 32 to the support portion 31m. The tact switch pressing rib 41 and the tact switch 22 come into contact with each other by pressing the button tip 34 and bending the button hinge 33. When the main surface 21a is viewed from the front, the button hinge 33, the button tip 34, and the tact switch 22 are arranged substantially in a straight line.

  According to the push button mounting structure according to the first embodiment of the present invention configured as described above, the button forming plate 32 is designed and deformed even when the position where the tact switch 22 is mounted on the main surface 21a is changed. Without having to do so. At this time, since the plurality of pressing portions 42p and 42q are formed in the region 52, the position change of the tact switch 22 can be flexibly dealt with. In other words, even if the entire printed circuit board is replaced, if the tact switch is disposed at an appropriate position, this change can be accommodated without designing the button forming plate 32. As a result, the mold cost of the operation panel 31 can be reduced, and the burden of design change can be reduced.

  In the present embodiment, the tact switch 22 is disposed in the vicinity of the button hinge 33. However, the tact switch 22 may be disposed at a position shown in FIG. In this case, even if the position at which the tact switch 22 is provided is changed to the position shown in FIG. 2, the button forming plate 32 can be changed without changing the design. The position where the button tip 34 is provided is not limited to the position overlapping the pressing portion 41p, and may be a position overlapping the pressing portion 42p or 42q, for example. In this embodiment, the case where the push button mounting structure is applied to the DVD player 10 has been described. However, the present invention is not limited to this, and may be applied to, for example, a video, a hard disk player, a television, and a printer. Can do.

(Embodiment 2)
FIG. 5 is a rear view showing a DVD player to which the push button mounting structure according to Embodiment 2 of the present invention is applied. FIG. 5 is a diagram corresponding to FIG. 3 in the first embodiment. The push button mounting structure in the present embodiment basically has the same structure as the push button mounting structure in the first embodiment. Hereinafter, the description of the overlapping structure will not be repeated.

  Referring to FIG. 5, in the present embodiment, tact switch pressing rib 42 has pressing portions 42p, 42q, 42r and 42s. In the pressing portions 42p, 42q, 42r, and 42s, the area of the facing surface 42a is larger than that of other portions where the ribs do not intersect.

  According to the push button mounting structure according to the second embodiment of the present invention configured as described above, the same effects as those described in the first embodiment can be obtained. In addition, since the tact switch pressing rib 42 is provided with more pressing portions, it is possible to more flexibly cope with the position change of the tact switch 22.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a perspective view which shows the DVD player to which the push button attachment structure in Embodiment 1 of this invention was applied. It is the side view of a DVD player seen from the arrow II in FIG. FIG. 3 is a rear view of the DVD player taken along line III-III in FIG. 2. FIG. 3 is a side view of the DVD player when the position of the tact switch in FIG. 2 is changed. It is a rear view which shows the DVD player to which the push button attachment structure in Embodiment 2 of this invention was applied.

Explanation of symbols

  21 printed circuit board, 21a main surface, 22 tact switch, 31m support section, 32 button forming plate, 32b back surface, 33 button hinge, 34 button tip, 41, 42 tact switch pressing rib, 42a facing surface, 42p, 42q pressing section , 51, 52 area.

Claims (4)

A printed circuit board having a main surface;
A switching element formed on the main surface;
It has a surface facing the main surface with a gap, and a button forming plate provided with a push button,
The surface defines a first region located immediately above the switching element and a second region located offset from immediately above the switching element, and
A first rib-like member formed on the surface so as to be located in the first region;
A second rib-like member formed on the surface to have a facing surface facing the main surface with a gap, and located in the second region;
The second rib-shaped member includes a plurality of pressing portions in which the area of the facing surface is larger than other positions,
The first rib-shaped member and the second rib-shaped member are formed in series, and
A hinge portion for connecting the button forming plate to the support portion;
When the push button is pressed and the hinge portion is bent, the first rib-shaped member and the switching element come into contact with each other,
When the main surface is viewed from the front, the hinge portion, the push button, and the switching element are arranged substantially in a straight line. A printed circuit board having a main surface;
A switching element formed on the main surface;
It has a surface facing the main surface with a gap, and a button forming plate provided with a push button,
The surface defines a first region located immediately above the switching element and a second region located offset from immediately above the switching element, and
A first rib-like member formed on the surface so as to be located in the first region;
A second rib-like member formed on the surface to have a facing surface facing the main surface with a gap, and located in the second region;
The second rib-shaped member has a push button mounting structure including a plurality of pressing portions in which an area of the facing surface is larger than other positions.   The push button mounting structure according to claim 2, wherein the first rib-shaped member and the second rib-shaped member are formed in a row. A hinge part for connecting the button forming plate to the support part;
When the push button is pressed and the hinge portion is bent, the first rib-shaped member and the switching element come into contact with each other,
4. The push button mounting structure according to claim 2, wherein the hinge portion, the push button, and the switching element are arranged substantially in a straight line when the main surface is viewed from the front. 5.

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