JPH10154428A - Switch-installating structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch-installing structure with which part damage, for example that claw parts are bent, scarcely occurs and a good assembly property can be obtained without requiring strict size control. SOLUTION: An arm part 7 extending to the position to connect with an operational part 3a of a switch 3 is integrally formed in a switch button 4 for operating the switch 3 from the outside of a lower case 5. A U-shaped groove 9 is formed in the tip end part of the arm part 7, and the operational part 3a is fitted in the U-shaped groove 9. In that state, an upper case 6 is put on and fixed in the lower case 5, so that the arm part 7 is sandwiched between the upper face of a printed circuit board 2 and the lower face of a rib guide 14 formed in the upper case 6 and so held as to be movable only in the sliding operation direction of the operational part 3a of the switch 3. Consequently the switch button 4 can be held while being enabled to slide, without using claws provided with spring property.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch mounting structure for an electronic device such as a personal computer, an electronic filing device, or office equipment or household products.

[0002]

2. Description of the Related Art Conventionally, as a structure for attaching a switch button to a case in an electronic device such as a personal computer, there is a structure as shown in FIG. 5, for example. In this switch mounting structure, the switch button 21 is formed of, for example, a resin, and a pair of snap spring portions 21 are formed by projecting hook-like claw portions 21b, 21b on the front end thereof outward.
a, 21a, and when assembling them, the lower case 2
The pair of snap spring portions 21a, 21a is inserted into an opening 22a formed in a lateral hole shape on the side surface of the pair 2.

[0003] Each snap spring portion 21a is
By inserting into the T-shaped claw fitting holes 23a of the switch connecting member 23 formed correspondingly, the claw portions 21b of the snap spring portions 21a are projected from the upper and lower openings. Insert. A U-shaped switch receiving groove 23b is formed on the back side of the switch connecting member 23, and the switch receiving groove 23b
Then, a convex operating portion 25a that can move in the lateral direction of the switch 25 mounted on the upper surface of the end portion of the printed circuit board 24 attached to the lower case 22 is fitted.

In this way, when the switch button 21 is slid in the direction of arrow A from the outside of the lower case 22, the switch connecting member 23 is moved in the same direction together with the operating portion 25a of the switch 25. .

[0005]

However, in such a conventional switch mounting structure, the claw portion of the snap spring portion having the resiliency of the switch button is fitted into the claw portion fitting hole of the switch connecting member which is another part. Since the hooks are attached by inserting them, there is a problem that the claws are easily broken. Also, in the case of such a mounting structure in which the claw portion is fitted into the hole, if the fitting is tight, it becomes difficult to assemble, so that the assemblability is deteriorated. There is also a problem that it is difficult to control the dimension of the hole side into which the hole is inserted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has no breakage of parts such as a broken nail portion, and provides good assemblability without strict dimensional control. An object of the present invention is to provide a switch mounting structure.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a switch in which a slidable operation portion of a switch fixed to a printed circuit board provided in a case is provided outside the case. In the switch mounting structure made operable by sliding the button,
The case has an upper case that can be removed upward with respect to the case side, and the switch button is integrally formed with an arm extending to a position connected to the operation unit of the switch, and the case side has the arm. An opening is formed to allow the operation part of the switch to be slidably operated by inserting the arm part, and when the upper part is put on in a state where the arm part is connected to the operation part, the arm part is connected to the printed circuit board and the upper case. To be held movably only in the slide operation direction.

With this configuration, the arm of the switch button is inserted into the opening formed on the side of the case, and the upper case is covered with the arm connected to the operation unit. The portion is sandwiched between the printed circuit board and the upper case, and is held so as to be movable only in the sliding operation direction of the switch. Therefore, the switch button can be slidably held without using a claw or the like having a spring property, so that there is no fear of breaking the claw and simple and reliable assembling can be performed.

In the above switch mounting structure, the first rib is provided on the surface of the arm of the switch button facing the printed circuit board, and the second rib is provided on the surface facing the upper case in the sliding direction of the switch button. Formed along
The first rib is guided by being sandwiched between the inner surface of the case side and the end surface of the printed circuit board, and the second rib is moved along the sliding direction from the upper case to a position where the second rib can be guided. It is preferable that the guide is provided by a rib guide that is extended.

[0010] Then, since the guides for guiding the switch button in the sliding direction are not exposed to the outside of the case, the appearance is improved. In addition, the guides can be enlarged as much as possible in the lower case, so that the guides can be performed without rattling the switch button, so that a smooth switch operation can be performed.

Further, in the above switch mounting structure,
A projection is formed on a surface of the arm of the switch button opposite to the surface of the printed circuit board on which the switch is fixed, and the projection is fitted into the printed circuit board corresponding to the projection, and the switch button is moved by a predetermined stroke of the switch. It is preferable to form a guide groove that allows only movement. Then, the position of the switch button with respect to the printed circuit board and the position of the component that guides the switch button slidably can be reliably determined.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view for explaining an embodiment of a switch mounting structure according to the present invention, FIG. 2 is an external perspective view showing a personal computer to which the switch mounting structure is applied, and FIG. FIG. 4 is a perspective view showing the vicinity of a switch provided on a side surface of the device with an upper cover removed.

As shown in FIG. 3, the switch mounting structure includes a printed circuit board (PC) provided in a case 1.
B) A switch mounting structure which enables an operation portion 3a of the switch 3 fixed to 2 to be slidable in the direction of arrow B by sliding a switch button 4 provided outside the case 1 in the direction of arrow B. This is suitable for a switch mounting structure for mounting a slide-type switch button 4 provided on a side surface of a personal computer as shown in FIG.

The case 1 of the personal computer
As shown in FIG. 1, the lower case 5 includes a lower case 5 in which a side portion 5a and a bottom portion 5b are integrally formed, and an upper case 6 that can be removed upward from the lower case 5.
The switch button 4 is formed integrally with an arm 7 extending to a position where the arm 7 is connected to the operation part 3 a of the switch 3, and the arm 7 is inserted into the side part 5 a of the lower case 5 from the outside to thereby operate the switch 3. An opening 8 is formed to enable the sliding operation of the member 3a in the direction indicated by the arrow B in FIG.

The arm 7 of the switch button 4 and the operating part 3a of the switch 3 are connected to each other in a U-shaped groove 9 formed at the tip of the arm 7 so as to receive the operating part 3a.
Is carried out with almost no backlash. As shown in FIG. 1, the arm 7 has a first rib 12 on the lower surface facing the printed circuit board 2 and a second rib 13 on the upper surface facing the upper case 6, as shown in FIG. The switch button 4 is formed along the sliding direction (the arrow B direction).

The first rib 12 is guided between the inner surface of the side portion 5a of the lower case 5 and the left end surface of the printed circuit board 2 as shown in FIG. 3 by a rib guide 14 extending along the sliding direction of the switch button 4 from the lower surface of the upper case 6 to a position shown in the drawing where the second rib 13 can be guided.
I try to guide in the direction. The first rib 1
2 and the second rib 13 are connected to the arm 7 as is apparent from FIG.
By displacing the upper position in the left and right direction in the drawing, the arm 7 can be easily inserted into the opening 8.

In this switch mounting structure, as shown in FIG. 1, the upper case 6 is placed on the lower case 5 with the operating portion 3a fitted and connected to the groove 9 at the tip of the arm 7. Further, the arm 7 is sandwiched between the printed circuit board 2 and the lower surface of the rib guide 14 of the upper case 6, and is held so as to be movable only in the sliding direction of the switch button 4 (the direction of arrow B in FIG. 3). It has become so.

As described above, in this switch mounting structure, the arm 7 of the switch button 4 is inserted into the opening 8 formed in the side portion 5a of the lower case 5, and the groove 9 at the tip of the arm 7 is inserted.
When the operation portion 3a of the switch 3 is fitted into the lower case 5 and the upper case 6 is fixed to the lower case 5 in this state, the arm 7 is connected to the upper surface of the printed circuit board 2 and the upper case 6 3 can be held so as to be movable only in the sliding direction of the switch 3 shown by the arrow B in FIG.

Therefore, as described with reference to FIG. 5, the switch button can be slidably held without fixing the switch button using a claw or the like having spring properties. So there is no worry about nail breaks,
Easy and reliable assembly is possible. The first arm 7
The gap between the inner surface of the side portion 5a of the lower case 5 guided by sandwiching the rib 12 and the left end surface of the printed circuit board 2 can be made as wide as space allows.

As described with reference to FIG. 3, the arm 7 of the switch button 4 is connected to the switch 3 by fitting the operating portion 3a into a U-shaped groove 9 formed at the end thereof. Are doing. Therefore, when the sliding range of the switch button 4 in the direction of arrow B is larger than necessary, even though the operating portion 3a of the switch 3 has reached the limit of movement, it is further slid there. May be added.

In this case, stress is applied to the switch 3, which is not preferable. Therefore, in such a case, it is necessary to restrict the switch button 4 from sliding in the direction indicated by the arrow B more than necessary. For this purpose, it is necessary to restrict the width of the opening 8 formed in the lower case 5. is there. However, in this case, when the position of the opening 8 of the lower case 5 is shifted from the position of the switch 3 on the printed circuit board 2 in the sliding direction of the switch button 4 due to an assembly error or the like. In some cases, the operation unit 3a of the switch 3 cannot slide to a position where the switch 3 should originally slide, and the switch 3 may not be turned on due to insufficient stroke.

In order to prevent such inconvenience, a switch mounting structure as shown in FIG. 4 may be used. That is, a projection 18 is formed on the lower surface of the arm 7 of the switch button 4 opposite to the upper surface of the printed circuit board 2 to which the switch 3 is fixed, and the projection 18 is fitted into the printed circuit board 2 corresponding to the projection 18. Then, the switch button 4 may be moved by a predetermined stroke of the switch 3 (a slide amount enabling the ON / OFF operation) to form a guide groove 19 for preventing an overstroke of the switch.

In this manner, the position of the switch button 4 with respect to the printed circuit board 2 can be reliably determined, so that the sliding amount of the switch button 4 can be made to match the switch stroke and the arm of the switch button 4 The guide of the first rib 12 formed on the end face of the printed circuit board 2 can be performed at an accurate position. Therefore, reliable switch operation can be performed.
In addition, assembly becomes easy.

[0024]

As described above, according to the switch mounting structure of the present invention, since the switch button is not mounted by using the pawl, there is no breakage of the parts such that the pawl portion is broken. Good assemblability can be obtained without strict dimensional control.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view illustrating an embodiment of a switch mounting structure according to the present invention.

FIG. 2 is an external perspective view showing a personal computer to which the switch mounting structure is applied.

FIG. 3 is a perspective view showing the vicinity of a switch provided on a side surface of the personal computer with an upper cover removed.

FIG. 4 is a plan view showing an example of a switch mounting structure that facilitates positioning of a switch button and a switch.

FIG. 5 is an external perspective view showing an example of a conventional switch mounting structure.

[Explanation of symbols]

 1: Case 2: Printed circuit board 3: Switch 3a: Operation unit 4: Switch button 5: Lower case 6: Upper case 7: Arm 8: Opening 12: First rib 13: Second rib 14: Rib guide 18 : Projection 19: Guide groove

Claims (3)

[Claims] 1. A switch mounting structure in which a slidable operation portion of a switch fixed to a printed circuit board provided in a case is made operable by sliding a switch button provided outside the case. The case has an upper case that can be removed upward with respect to the case side, and the switch button is integrally formed with an arm that extends to a position connected to the operation unit of the switch, and the case side has the arm. An opening is formed to allow the operation of the switch to be slidably operated by inserting an arm, and when the upper case is covered with the arm connected to the operation, the arm is connected to the printed circuit. A switch mounting structure sandwiched between a substrate and the upper case and held so as to be movable only in the slide operation direction. 2. The switch mounting structure according to claim 1, wherein a first rib is provided on a surface of the arm portion of the switch button facing the printed circuit board, and a second rib is provided on a surface facing the upper case. The first rib is formed along the sliding direction of the switch button, and the first rib is guided between the inner surface of the case side and the end surface of the printed circuit board, and the second rib is connected to the upper case. A switch mounting structure which is guided by a rib guide extending along the sliding direction to a position where the second rib can be guided. 3. The switch mounting structure according to claim 1, wherein a protrusion is formed on a surface of the arm portion of the switch button opposite to a surface of the printed circuit board on which the switch is fixed. And a guide groove for allowing the switch button to move by a predetermined stroke of the switch by fitting the protrusion into the printed circuit board.