JP2004273199A - Switching device and manufacturing method of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switching device used for an operating part of various electronic equipment, an automobile or the like, and to provide a manufacturing method of the same, which provide a switching device easy to assemble and of a low cost. <P>SOLUTION: The switching device is constituted of a protruded part 11A provided to a push button 11 protruding from the outer periphery of the push button 11; an insertion groove 12B in which the protruded part 11A is inserted when the push button 11 is inserted, arranged on the inner circumference of the through hole 12A of the cover 12 in which the push button 11 is inserted in free vertical movement; and a guide groove 12C of which upper end is closed, and on which the protruded part 11A slides when the push button 11 is pressed. A push switch 14 is mounted on the lower part of the push button 11 formed by integrating the cover 12 and the spring 13 in one body, by rotating the push button 11 and inserting the protruded part 11A into the guide groove 12C, after inserting the protruded part 11A in the insertion groove 12B while bending a spring 13 by inserting the push button 11 into the through hole 12A. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a switch device used for an operation unit of various electronic devices and automobiles, and a method of manufacturing the same.
[0002]
[Prior art]
In recent years, in the operation of equipment, a push method of pressing a switch via a push button has been widely used. Depending on the switch, the electrical contact / separation state of the switch is switched, but many push buttons are configured to always return to the state before the operation.
[0003]
Such a conventional switch device will be described with reference to FIG.
[0004]
FIG. 6 is a cross-sectional view of a conventional switch device, in which 1 is a push button made of an insulating resin, 2 is a housing of a device, and the upper end of the push button 1 is vertically moved through a through hole 2A provided in the housing 2. It is movably arranged to slightly project upward.
[0005]
Reference numeral 3 denotes a push switch in which the operating body 3A protrudes upward. Reference numeral 4 denotes a wiring board on which a plurality of wiring patterns (not shown) are formed on upper and lower surfaces. The terminals 3B of the push switch 3 are connected to the wiring board by soldering or the like. 4 and connected to an electronic circuit (not shown) of the device.
[0006]
A lock mechanism including a stopper and a cam and a switch contact (both not shown) are formed inside the push switch 3. After the upper end of the operating body 3 </ b> A is pressed down and then released once, the operation is started. The body 3A is locked, stops at a predetermined position, and returns to the initial position when pressed once more, and the switch contacts are kept ON or OFF at each position.
[0007]
Reference numeral 5 denotes a coiled spring, which is mounted between the lower surface of the push button 1 and the push switch 3 in a state where the spring 5 is slightly bent, and urges the push button 1 upward to constitute a switch device.
[0008]
In the above configuration, when the push button 1 is pressed downward with a finger, the push button 1 moves downward while bending the spring 5, and the lower surface of the push button 1 presses the upper end of the operating body 3 </ b> A of the push switch 3 via the spring 5. Therefore, the operating body 3A moves downward, and the electrical contact and separation of the switch contact, for example, switching from the OFF state to the ON state is performed.
[0009]
When the finger is released from the push button 1, the lower surface of the push button 1 is pressed by the spring 5 and returns to the initial position. However, as described above, the operating body 3A is locked and stopped at a predetermined position, and the push switch 1 is pressed. The switch contact No. 3 is kept in the ON state.
[0010]
Next, when the push button 1 is pressed again, the push button 1 moves downward and presses the upper end of the operating body 3A again, so that the lock of the operating body 3A is released.
[0011]
Then, when the finger is released again, the operating body 3A returns to the initial position together with the push button 1, and the switch contact of the push switch 3 is turned off first.
[0012]
As described above, by mounting the spring 5 between the lower surface of the push button 1 and the push switch 3 with the lock mechanism, the electrical contact / separation state of the switch contact is switched every time the pressing operation is performed. The switch device is configured so as to return to the initial state.
[0013]
As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
[0014]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 4-59027 [0015]
[Problems to be solved by the invention]
However, in the above-described conventional switch device, it is necessary to mount the spring 5 between the lower surface of the push button 1 and the push switch 3 attached to the wiring board 4 while bending the spring 5 when assembling the equipment. There is a problem that detachment is apt to occur and it takes time to assemble.
[0016]
The present invention is to solve such a conventional problem, and an object of the present invention is to provide an inexpensive switch device that is easy to assemble and a method of manufacturing the same.
[0017]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration.
[0018]
According to the first aspect of the present invention, the push button is provided with a projection projecting from the outer periphery, and the projection is inserted into the inner periphery of the through hole of the cover into which the push button is vertically movably inserted when the push button is inserted. A switch device is provided by providing a guide groove with an upper end closed, in which the protrusion slides when the push button is pressed, and the spring is bent by inserting the protrusion into the insertion groove. After inserting the push button through the cover, rotate the push button, insert the protrusion into the guide groove, temporarily hold the push button on the cover, and attach the push switch below the push button with the cover and spring integrated to assemble it. Therefore, there is an effect that it is possible to obtain an inexpensive switch device that is easy to assemble and less likely to come off the spring.
[0019]
According to a second aspect of the present invention, in the first aspect of the present invention, a plurality of protrusions are provided on the push button, and a plurality of corresponding insertion grooves and guide grooves are provided on the inner periphery of the through hole of the cover. With the plurality of projections, the plurality of insertion grooves and the guide grooves, the spring is less likely to come off during assembly, and the push button does not rattle or tilt, so that the operation feeling is good. It has the effect of being able to.
[0020]
According to a third aspect of the present invention, in the first aspect of the present invention, the push switch is held by a cover, and a cover or the like covering the upper surface of the push switch is not required. It has the effect of being able to reduce the cost and to obtain an inexpensive one.
[0021]
According to the invention described in claim 4, a spring is mounted between the upper end of the push button and the cover, and the push button is inserted into the through groove of the cover from above by inserting the protrusion into the insertion groove while bending the spring. 2. The method for manufacturing a switch device according to claim 1, wherein the push button is rotated with the protrusion protruding from the lower surface of the cover, the protrusion is inserted into the guide groove, and then the push switch is mounted below the push button. This has the effect that an easy and inexpensive switch device can be realized.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5.
[0023]
(Embodiment)
FIG. 1 is a cross-sectional view of a switch device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the switch device. In FIG. Is provided with a plurality of protrusions 11A protruding outward.
[0024]
Reference numeral 12 denotes a cover made of an insulating resin, and a plurality of insertion grooves 12B penetrating from the upper surface to the lower surface of the cover 12 are provided at symmetrical positions on the inner periphery of the central through hole 12A, and are symmetrical in a direction perpendicular to this. At the position, a plurality of guide grooves 12C whose upper ends are closed are provided.
[0025]
Reference numeral 13 denotes a coil spring. The spring 13 is mounted between the operation portion 11B at the upper end of the push button 11 and the upper surface of the cover 12 in a slightly bent state, and is inserted into the through hole 12A so as to be vertically movable. The push button 11 is urged upward, and the plurality of protrusions 11A of the push button 11 abut on the upper end of the guide groove 12C, so that the push button 11 is locked to the cover 12.
[0026]
Further, reference numeral 14 denotes a push switch which presses the operating body 15 to the lower surface of the push button 11 to electrically connect / disconnect the operating body 15. The operating body 15 made of insulating resin is vertically movably housed in a box-shaped insulating resin case 16. At the same time, a heart-shaped cam groove 15A is formed in the operation body 15, and movable contacts 17 made of conductive metal are mounted on both side surfaces.
[0027]
In the case 16, terminals 18 A project from the bottom of the case 16, and a plurality of fixed contacts 18 that are electrically connected and separated by the movement of the movable contact 17 are implanted, and one end slides in the cam groove 15 A. A substantially U-shaped metal stopper 19 that moves to lock the operation body 15 and a spring 20 that urges the operation body 15 upward are housed.
[0028]
Further, an engagement hole 12D of the cover 12 is fitted into a claw portion 16A provided on a side surface of the case 16 of the push switch 14, and the push switch 14 is held on the lower surface of the cover 12, thereby forming a switch device.
[0029]
Then, the switch device causes the operation unit 11B at the upper end of the push button 11 to slightly protrude upward from a through hole (not shown) of the housing of the device, and a wiring connected to an electronic circuit (not shown) of the device. The terminal 18A is connected to a wiring pattern (not shown) of the board by soldering or the like, and is mounted on the device.
[0030]
Next, a method for manufacturing the switch device configured as described above will be described with reference to an exploded perspective view of FIG.
[0031]
Note that FIG. 3 shows the cover 12 in a direction opposite to that of FIGS. 1 and 2 when viewed from the back, as viewed from below, for easy understanding.
[0032]
First, as shown in FIG. 3A, the push button 11 with the spring 13 mounted above the operation unit 11B is inserted into a plurality of insertion grooves 12B that penetrate the plurality of projections 11A into the upper and lower surfaces of the cover 12, and The spring 13 is inserted into the through hole 12A while bending the spring 13 between itself and the surface of the spring 12.
[0033]
Subsequently, as shown in FIG. 3B, the protrusion 11A passes through the insertion groove 12B, and the protrusion 11A protrudes from the rear surface of the cover 12. From this state, the push button 11 is moved toward the guide groove 12C. Rotate.
[0034]
Then, as shown in FIG. 3 (c), when the hand is released from the push button 11 in a state where the protrusion 11 </ b> A is inserted into the guide groove 12 </ b> C, the protrusion 11 </ b> A moves inside the guide groove 12 </ b> C by the elastic return force of the spring 13. Sliding, the protrusion 11A abuts on the closed lower end of the guide groove 12C, and the push button 11 is locked to the cover 12 with the spring 13 mounted.
[0035]
In other words, in this state, the push button 11 bends the spring 13 between the operation portion 11B and the upper surface of the cover 12, and the projection 11A comes into contact with the end of the guide groove 12C to be integrated with the cover 12. Is held in.
[0036]
Finally, the claw portion 16A on the side of the case 16 of the push switch 14 in which the operating body 15, the movable contact 17, the stopper 19 and the like are incorporated in the case 16 is fitted into the engaging hole 12D of the cover 12, and the push switch is Holding the switch 14, the switch device is completed.
[0037]
In the configuration described above, when the upper surface of the operation portion 11B of the push button 11 is pressed downward with a finger from the state shown in FIG. 1, as shown in the cross-sectional view of FIG. Since the lower surface of the push button 11 presses the upper end of the operating body 15 of the push switch 14, the operating body 15 moves downward in the case 16 to electrically connect and disconnect the switch contacts, for example, Then, the movable contact 17 comes into contact between the plurality of fixed contacts 18 to switch from the OFF state to the ON state.
[0038]
At the same time, one end of the stopper 19 relatively slides in the cam groove 15A of the operation body 15 and moves to a predetermined lock position, and the lower surface of the operation body 15 contacts the bottom surface of the case 16, so that the push button 11 is It will be in the state of being pressed most downward.
[0039]
At this time, the projection 11A inserted into the guide groove 12C is so arranged that the lower surface of the push button 11 is in contact with the upper surface of the operation body 15 and the push button 11 is pressed to the lowest position so as not to come off from the inside of the guide groove 12C. It is configured.
[0040]
Then, when the finger is released from the push button 11, as shown in the cross-sectional view of FIG. 5, the lower surface of the operation portion 11B is pressed by the spring 13 to return to the initial position, but the operation body 15 is in the cam groove 15A. Is locked at a predetermined position by the stopper 19 that has been moved to a predetermined position and stopped, the lower surface of the push button 11 is separated from the upper end of the operating body 15, and the switch contact of the push switch 14 is maintained in the ON state.
[0041]
Next, when the push button 11 is pressed again, the push button 11 moves downward and the lower surface again presses the upper end of the operating body 15, so that the operating body 15 moves until the lower surface contacts the bottom surface of the case 16 and At the same time, one end of the stopper 19 slides in the cam groove 15A, and comes off the predetermined lock position.
[0042]
When the finger is released again from the push button 11, the push button 11 returns to the initial position by the elastic return force of the spring 13, and the unlocked operating body 15 also returns to the initial position by the spring 20. 17 also moved away from the fixed contact 18, and the switch contact of the push switch 14 was also turned off. It returns to the initial state as shown in FIG.
[0043]
In other words, the switch device is configured such that the state of electrical contact and separation of the push switch 14 is switched every time the push button 11 is pressed, but the push button 11 always returns to the initial state before the operation.
[0044]
As described above, according to the present embodiment, the push button 11 is provided with the projection 11A protruding from the outer periphery, and the push button 11 is inserted into the through hole 12A of the cover 12 into which the push button 11 is vertically movably inserted. An insertion groove 12B through which the projection 11A is inserted, and a guide groove 12C whose upper end is closed, in which the projection 11A slides when the push button 11 is pressed, constitute a switch device, and the projection 11A is inserted into the insertion groove 12B. After inserting the push button 11 into the through hole 12A while bending the spring 13, the push button 11 is rotated to insert the protrusion 11A into the guide groove 12C, so that the cover 12 and the spring 13 are integrated. By mounting the push switch 14 below the push button 11 and performing assembly, it is possible to obtain a switch device which is less likely to come off the spring 13 and is easy to assemble and inexpensive, and a manufacturing method thereof. It is those that can.
[0045]
Further, by providing a plurality of protrusions 11A on the push button 11 and providing a plurality of corresponding insertion grooves 12B and guide grooves 12C in the inner periphery of the through hole 12A of the cover 12, the spring 13 can be further detached during assembly. Is less likely to occur, and there is no looseness or inclination of the push button 11, and a switch device having a good operation feeling can be obtained.
[0046]
Further, by holding the push switch 14 with the cover 12 using the claw portion 16A on the side surface of the case 16 and the engaging hole 12D of the cover 12, a lid or the like that covers the upper surface of the push switch becomes unnecessary. The number of parts used can be reduced as a whole, and the cost can be further reduced.
[0047]
In the above description, the push switch 14 is held by the cover 12, and in addition to the push button 11, the cover 12, and the spring 13, the push switch 14 is also integrated. The embodiment of the present invention may be implemented by combining an integrated unit with a single push switch, or by providing an insertion groove 12B or a guide groove 12C in a device housing or the like, and assembling the push button 11 and the spring 13 with the insertion groove 12B or the guide groove 12C. Is possible.
[0048]
【The invention's effect】
As described above, according to the present invention, there is obtained an advantageous effect that an inexpensive switch device that can be easily assembled and a method for manufacturing the same can be obtained.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a switch device according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the same. FIG. 3 is an exploded perspective view showing the same manufacturing method. 5: Cross-sectional view at the time of lock [FIG. 6] Cross-sectional view of conventional switch device [Description of reference numerals]
Reference Signs List 11 push button 11A protrusion 11B operation part 12 cover 12A through hole 12B insertion groove 12C guide groove 12D engagement hole 13 spring 14 push switch 15 operation body 15A cam groove 16 case 16A claw 17 movable contact 18 fixed contact 18A terminal 19 stopper 20 Spring

Claims (4)

From a push button, a cover in which the push button is vertically movably inserted into a through-hole, a spring for urging the push button upward, and a push switch in which an operating body is pressed on the lower surface of the push button to perform electrical contact / separation. The push button is provided with a protrusion protruding from the outer periphery, and an insertion groove through which the protrusion is inserted when the push button is inserted, and the protrusion is slid when the push button is pressed on the inner circumference of the through hole of the cover. A switch device having a movable guide groove with a closed upper end. 2. The switch device according to claim 1, wherein a plurality of protrusions are provided on the push button, and a plurality of insertion grooves and guide grooves corresponding to the plurality of protrusions are provided on an inner periphery of the through hole of the cover. 2. The switch device according to claim 1, wherein the push switch is held by a cover. A spring is mounted between the upper end of the push button and the cover, and while the spring is being bent, the push button is inserted from above into the insertion groove in the through hole of the cover by inserting a protrusion into the through hole, and then from the lower surface of the cover, 2. The method for manufacturing a switch device according to claim 1, wherein the push button is rotated with the protrusion protruding, and the push switch is mounted below the push button after inserting the protrusion into the guide groove.

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