JPH076581Y2 - Switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a switch that requires accuracy of contact switching timing.

[Conventional technology]

4 to 5 are explanatory views of a rotary type switch of a conventional example, FIG. 4 is a sectional view of a main part of a rotary switch, and FIG. 5 is a plan view showing a relationship between a slider and a pattern.

In the drawings, 1 is a switch substrate, 2 is a rotary shaft rotatably supported by the substrate 1, 3 is a shaft receiver fixed to the shaft 2, and a slider receiver that rotates together with the shaft 2 is provided on the slider receiver 3. The slider 4 is fixed. 5,6,7,8 are the common pattern formed by etching in a concentric pattern on the surface of the substrate 1 and the first, first and second patterns.
In the second and third patterns, the tip of the slider 4 has contact pieces 4a, 4b, 4
The contact pieces 4a, 4b, 4c, 4d are branched into c, 4d, and are in sliding contact with the common pattern 5 and the third, second, first patterns 8, 7, 6, respectively.

[Problems to be solved by the device]

By the way, the above-mentioned rotary switch has the following problems.

(1) Pattern 5 is formed on the switch substrate 1 by etching.
The process of forming 6, 7, and 8 is complicated, and the switch itself is expensive, which is not suitable for a large number of types of small-quantity switches.

(2) Since the formation of the patterns 5, 6, 7, 8 and the drilling of the hole 9 for fitting the rotary shaft 2 into the switch substrate 1 are different, each contact piece 4a, 4b, Misalignment between the patterns 4c, 4d and the patterns 5, 8, 7, 6 is likely to occur, and accurate contact switching timing cannot be obtained.

The present invention is intended to solve the conventional problems as described above, and an object of the present invention is to improve the relative position accuracy between the switch element and the cam crest of the driving body and to improve the switching timing of the contact points of the switch. It will be more accurate than before, and it will be easier to carry out when producing various kinds of small quantities than before, and the process and management will be simpler than the conventional switch configuration with integrated contact parts. Therefore, it is an object of the present invention to provide a switch that is less expensive than the case where a pattern is formed by conventional etching, and that sliding noise does not occur when the switch is turned on.

[Means for Solving the Problems]

In order to achieve the above object, the present invention positions a switch element accommodating groove and a driver in a switch device that drives a driver to turn on / off a switch of a switch substrate facing the driver. A switch board having holes formed at the same time, a switch element that can be stored in a switch element storage groove of the switch board, and a cam mountain for operating the switch element on a surface facing the switch element stored in the switch element storage groove of the switch board. Is provided so that the switch element is turned off when operated by the cam crest of the drive body.

[Action]

With the above configuration, since the switch element housing groove and the positioning hole are simultaneously formed in one step, the relative position accuracy of the switch element and the cam crest of the driving body is improved, and the switching timing of the contact point of the switch is improved. It is more accurate than

Further, in the case of producing many kinds in small quantities, it is only necessary to change the positions of the cam ridges of the driving body and the switch element accommodating grooves, and the switch elements can be used in common and can be mass-produced in a separate process.

Further, since the switch element is turned off when operated by the cam crest of the driving body, sliding noise does not occur when the switch is turned on.

〔Example〕

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

1 to 3 are explanatory views of an embodiment of the present invention. FIG. 1 is a sectional view of a switch, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is a sectional view of a switch element.

In FIGS. 1 and 2, reference numeral 10 denotes a switch substrate made of a mold or the like. The switch storage grooves 11 are arranged concentrically with each other, and a positioning hole 12 into which a supporting rod for positioning a guide member described later is fitted near the outer peripheral edge 12 ... are formed at the same time. A switch element 13 has a structure, as shown in FIG. 3, in which a movable contact piece 15 is embedded in a first wafer 14 and is fixed to a second wafer 16 formed outside the first wafer 14. The contact piece 17 and the insulating film 18 are embedded, and the elastic arm 19 of the movable contact piece 15 is embedded.
A contact portion 20 and an operating portion 21 are continuously provided at the tip of the operating portion 21, and the operating portion 21 projects outward from the hole 22 of the fixed contact piece 17, and the operating portion 21 is covered with the insulating film 18. Has been done. Further, the contact part 20 is elastically contacted with the fixed contact piece 17, and the contact is
It is ON.

Returning to FIGS. 1 and 2, 23 is a driving body, which is a top plate 24 and a cylindrical body 26.
A flange 27 having a diameter larger than that of the cylindrical body 26 is provided on the lower surface of the cylindrical body 26, and a knob 28 is provided on the upper surface of the upper surface plate 24. The switch element 13 is provided on the inner bottom surface of the top plate 24.
.. are provided concentrically with the cam ridges 29 .... which can press the operating portion 21 of the switch element 13. Reference numeral 30 denotes a guide member for the driving body 23 including the upper surface plate 31 and the cylindrical body 32,
The upper plate 31 is provided with a circular hole 33 into which the cylindrical body 26 of the driving body 23 is fitted, and the lower surface of the cylindrical body 32 is provided with a supporting rod 34 for positioning.

Next, the assembly of the above switch will be described. First,
A switch element is provided in the switch storage groove 11 of the switch substrate 10.
Store 13 ……. Next, the collar portion 27 of the driving body 23 is placed on the switch substrate 10. Next, from the top of the driving body 23, the guide member 30
And fit the cylindrical body 26 into the circular hole 33 of the guide member 30,
The support rod 34 provided at the tip of the cylindrical body 32 is fitted into the positioning hole 12 provided in the switch substrate 10, and the assembly is completed.

The switch of the embodiment of the present invention has the structure as described above, and the operation will be described below.

First, when the knob 28 of the drive body 23 is rotated, the drive body 23 is guided and rotated by the guide member 30, and when the cam crest 29 provided on the drive body 23 comes to the position of the operation portion 21 of the switch element 13, The cam crest 29 presses the operation portion 21 downward, the contact portion 20 of the switch element 13 is separated from the fixed contact piece 17, and the contact is turned off. When the cam crest 29 passes over the operation portion 21, the movable contact piece 15 returns to its original position by its own restoring force, and the contact is turned on again.

According to the above embodiment of the present invention, since the switch element housing groove 11 of the switch substrate 10 and the positioning hole 12 of the guide member 30 can be processed in one step, the switch element 13 and the driver 23
The relative position accuracy with respect to the cam mountain 29 is improved, and the accuracy of the switch contact switching timing is improved compared to the conventional case.

Further, in the case of producing many kinds in small quantities, it is only necessary to prepare a common switch element 13 in advance and change the positions of the switch element storage groove 11 of the switch substrate 10 and the cam crest 29 of the driving body 23. It can be done easily.

Also, the switch element 13 always turns on the contact when it is inactive,
Since the cam crest 29 is turned off only when the operation part 21 is mounted, sliding noise is not generated when the switch is turned on.

Furthermore, since the switch element 13 can be mass-produced in a separate process, the contact portion can be made cheaper than the case where a pattern is formed by conventional etching.

Although illustration is omitted, as positioning of the driving body 23,
At the same time as the switch element housing groove 11 is formed in the switch substrate 10, a hole for positioning the driving body 23 is provided at the same time in the center, and one driving body 23
A shaft may be provided at the center of the and the shaft may be fitted in the positioning hole.

Further, the switch element 13 is not limited to that of the embodiment, and may be anything as long as the case has the movable contact and the fixed contact.

[Effect of device]

As described above, according to the present invention, since the switch element accommodating groove and the positioning hole are formed simultaneously in one step, the relative position accuracy of the switch element and the cam peak of the driving body is improved, and the switch The contact switching timing is more accurate than before.

Further, in the case of producing many kinds in small quantities, since it is only necessary to change the positions of the cam crests of the driving body and the switch element accommodating grooves, it is possible to perform the production more easily than in the past.

Also, since the switch element can be used in common and can be mass-produced in a separate process, the process and management are simpler than the conventional switch configuration that integrates the contact parts, and thus the conventional etching is possible. The price is lower than when a pattern is formed.

Further, since the switch element is turned off when operated by the cam crest of the driving body, sliding noise does not occur when the switch is turned on.

[Brief description of drawings]

1 to 3 are explanatory views of an embodiment of the present invention. FIG. 1 is a sectional view of a switch of an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is a sectional view of a switch element. Figures, 4 and 5
FIG. 4 is an explanatory view of a conventional example, FIG. 4 is a sectional view of a main part of a rotary switch, and FIG. 5 is a plan view showing a relationship between a slider and a pattern. 10 ... Switch substrate, 11 ... Switch storage groove, 12 ... Positioning hole, 13 ... Switch element, 23 ... Driving body, 29
...... Kam mountain.

Claims (1)

[Scope of utility model registration request] 1. A switch device for turning on / off a switch of a switch substrate facing the drive body by driving the drive body, wherein a switch element housing groove and a hole for positioning the drive body are simultaneously formed. A switch element that can be housed in the switch element housing groove of the switch board, and a driving body that has a cam mountain for operating the switch element on a surface facing the switch element housed in the switch element housing groove of the switch board. A switch characterized in that the switch element is turned off when operated by a cam crest of the driving body.