JPH0310591Y2 - - Google Patents

Description

[Detailed Description of the Invention] Field of Industrial Application The present invention relates to a switching device for a switch, and more particularly to a switching device that switches a switch by utilizing the stroke of a slidably arranged operation plate.

〓Background technology and its problems〓 For example, in a tape recorder, a changeover switch is provided to change between a playback mode and a recording mode, and switching between the two modes is performed by changing this switch. ing. That is, by moving the recording operation panel forward, the switch is switched and the tape recorder is changed from the playback state to the recording state.

4 and 5 show a conventional switching device for this purpose, in which a recording slide plate 1 of this tape recorder is slidably supported, and a return spring 2 is supported. is biased in the backward direction by. A leaf spring 3 is provided on the slide plate 1, and this leaf spring 3 causes the operation button 5 of the recording/reproduction changeover switch 4 to be
It's like pressing . Then, when the operator 5 is pushed against the compression coil spring 6,
This changeover switch 4 is adapted to be switched to a recording state. Therefore, FIG. 4 shows the playback state, and when switched as shown in FIG. 5, the state changes to the recording state.

According to such a conventional switching device for the switch 4, the force applied to the slide plate 1, that is, the force required to operate the slide plate 1, is the biasing force of the return spring 2 applied to the slide plate 1, and the force applied to the slide plate 1. This is the sum of the elastic restoring force of the spring 3 and the biasing force of the compression coil spring 6. Furthermore, the slide plate 1 has an overstroke so that the switch 4 can be switched reliably, and this overstroke L is absorbed by the elastic deformation of the leaf spring 3. Therefore, especially if the overstroke L is increased, the operating force for the slide plate 1 will also increase, resulting in poor operability.

〓Purpose of the invention〓 The present invention was devised in view of the above-mentioned problems, and it is possible to freely adjust the operating force of the operation panel for switching the switch, thereby providing excellent operability. The object of the present invention is to provide a switching device for a switch.

〓Summary of the invention〓 The present invention utilizes the stroke of a slidably arranged operation plate to switch a switch having an operation part that is operated in a direction substantially perpendicular to the sliding direction of the operation plate. In the apparatus, a conversion lever is provided that transmits the stroke of the operation plate to the switch, and a first arm of the conversion lever that is pressed by the operation plate is connected to a second arm that presses the operation part of the switch. an opening is formed in the printed wiring board on which the switch is mounted, and the edge of the opening allows the U to be detachably attached.
A letter-shaped bearing is installed, the fulcrum portion of the conversion lever is rotatably supported by the bearing, and the stroke of the operation plate located on the opposite side of the switch with respect to the printed wiring board is converted. The switch is operated by transmitting a signal to the operating section of the switch via a lever, and the lever is supported via a bearing in the opening of the printed wiring board, and a light operating force is applied. This allows for improved operability.

〓Example〓 The present invention will be described below with reference to an illustrated example.
1 and 2 show an embodiment in which the present invention is applied to a switching device for a recording/reproduction switch of a tape recorder, and the device according to this embodiment is equipped with a printed wiring board 10. In FIG. A recording/reproduction changeover switch 11 is mounted on the mounting surface of the substrate 10 along with various circuit components. The lead leg of this switch 11 is
It passes through the through hole of this substrate 10 and is soldered to a pattern formed on the pattern surface. An operator 12 is slidably protruded and attached to the tip of the switch 11. The operator 12 is pushed in a protruding direction by a compression coil spring 14 via its spring receiver 13. The operator 12 of the switch 11 is positioned so as to face a rectangular opening 15 formed in the printed wiring board 10.

A bearing 16 is attached to the rectangular opening 15 of the printed wiring board 10. The bearing 16 is made of a synthetic resin molded body, and has a U-shaped bearing portion 1.
7, and the support shaft 19 of the conversion lever 18 is rotatably supported by this bearing portion 17. The free end of the bearing portion 17 is closed by the edge of the rectangular opening 15 of the printed wiring board 10, thereby preventing the support shaft 19 from falling off. A locking portion 20 having a U-shaped cross section is formed on one side of the bearing 16, and a pawl 21 is provided on the other side. Therefore, the locking part 20
is engaged with one edge of the opening 15, and
By elastically deforming and engaging the claw 21 with the other edge, this bearing 16 is attached to the printed wiring board 1.
It will be attached to the rectangular opening 15 of 0.

The support shaft 19 of the conversion lever 18 is rotatably supported by the bearing 16 mounted in the rectangular opening 15 of the printed wiring board 10 as described above. A pressing part 22 is connected to the tip of this lever 18, and this pressing part 22
is the operator 12 of the recording/reproduction changeover switch 11.
, and is adapted to press this operator 12. In addition, the tip of the conversion lever 18 is
It is pressed by the tip of the recording slide plate 23. The slide plate 23 is disposed on the pattern surface side of the printed wiring board 10 and is supported so as to be slidable in a direction perpendicular to the plane of the board 10. Also slide plate 2
3 is urged in the backward movement direction by a return spring 24.

In the above configuration, when the recording slide plate 23 is in the backward movement position, the conversion lever 18 is not pushed by the slide plate 23, as shown in FIGS. 1 and 2. Therefore, this lever 18 is in a state of being rotated counterclockwise. When the operator 12 is not pressed by the pressing portion 22 of the lever 18, the changeover switch 1 mounted on the printed wiring board 10 is pressed.
1 is in the playback state. That is, in the state shown in FIGS. 1 and 2, this tape recorder
Switched to playback mode.

In contrast, when a button (not shown) is pressed to move the recording slide plate 23 forward against the return spring 24,
The tip thereof pushes the tip of the conversion lever 18, and this lever 18 rotates clockwise in FIG. 3 about the support shaft 19. Therefore, the pressing portion 22 of this lever 18 pushes the operator 12 of the changeover switch 11, and the operator 12 moves to the right against the compression coil spring 14. Therefore, by moving the operator 12, the changeover switch 11 is switched and the tape recorder is changed to the recording mode.

As described above, according to the switching device according to this embodiment, the stroke of the recording slide plate 23 is transmitted to the operator 12 of the switch 11 via the conversion lever 18. In this embodiment, the lever ratio of the conversion lever 18 is set to about 1/3, so that the operator 12 moves with a stroke of about 1/3 of the stroke of the lever 23. Therefore, the wasted stroke of the slide plate 23 can be absorbed by the lever ratio of the lever 18, and the value of the repulsive force that the slide plate 23 receives from the compression coil spring 14 can be reduced by adjusting the lever ratio of the conversion lever 18. By 1/
3. Therefore, the operating force for the slide plate 23 can be reduced accordingly,
This makes it possible to improve the operability of the switching device. Furthermore, since there is no leaf spring to absorb overstroke, there is no repulsive force due to the elastic restoring force of this leaf spring, and the slide plate 23 does not become heavy, which further improves operability. become.

Although the present invention has been described above with reference to an illustrated embodiment,
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention. For example, although the above embodiment relates to a switching device for switching between recording and playback in a tape recorder, the present invention is applicable to switching devices for various other switches.

Effects of the invention As described above, according to the invention, a conversion lever is provided that transmits the stroke of the operation plate to the switch, and the lengths of the first arm and the second arm of this conversion lever are changed. Since the first arm is made longer than the second arm, it is possible to reduce the operating force and improve the operability.

Additionally, since the U-shaped bearing that rotatably supports the conversion lever is removably attached to the edge of the opening of the printed wiring board on which the switch is mounted, the support mechanism for the conversion lever is simplified. .

Also, since the stroke of the operation panel located on the opposite side of the printed wiring board from the switch is transmitted to the switch via the conversion lever, the stroke of the operation board located on the opposite side of the printed wiring board from the switch mounting surface is It becomes possible to operate the switch using the operated operation panel.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a main part showing a switching device of a recording/playback switch of a tape recorder according to an embodiment of the present invention, Fig. 2 is a plan view of the main part, and Fig. 3 is a state in which the switch is switched to the recording state. 2, FIG. 4 is a plan view showing a conventional recording/reproduction switching device, and FIG. 5 is a plan view in the switched state. In addition, in the symbols used in the drawings, 10...printed wiring board, 11...recording/reproduction switching switch, 1
2... Operator, 14... Compression coil spring, 15... Rectangular opening, 16... Bearing, 17... U-shaped bearing part,
18... Conversion lever, 22... Pressing part, 23... Recording slide plate.

Claims (1)

[Scope of utility model registration request] In a device for switching a switch having an operating section that is operated in a direction substantially perpendicular to a sliding direction of the operating plate using the stroke of a slidably arranged operating plate, the stroke of the operating plate may be adjusted to A conversion lever for transmitting transmission to the switch is provided, and a first
A second arm that presses the operating section of the switch.
an opening is formed in the printed wiring board on which the switch is mounted, and a U-shaped bearing is removably attached to the edge of the opening, and the conversion lever is extended by the bearing. The fulcrum part is rotatably supported, and the stroke of the operation plate located on the opposite side of the switch with respect to the printed wiring board is transmitted to the operation part of the switch via the conversion lever. A switching device for a switch, characterized in that the switch is switched.