JPH08273483A - Switch operational member-retaining mechanism - Google Patents

Abstract

PURPOSE: To provide a switch operational member-retaining mechanism with a simple structure and which can be manufactured at low cost. CONSTITUTION: A slide switch 14 is composed of an electric contact piece 20 installed in a circuit board 10 and a switch operational member 16 which opens or close the electric contact piece 20. Two leg parts 16a, 16b are unitedly formed in the switch operational member 16 and at the tip of the leg part 16a, an engaging claw 16c to be engaged with an operational member installation part 17 installed in an operational panel is unitedly formed. An extended part 15c of a photo-conductive member 15 is inserted between these two leg parts 16a, 16b of the switch operational member 16. The photo-guiding member 15 guides light emitted from light emitting diodes 18a, 18 installed in the circuit board 10 to display parts 15a, 15b of the photo-conductive member 15 exposed in the front face of an operational panel 5 and is fixed in the back side of the operational panel 5 by fixing parts 15d, 15e formed in the sides of the tip end of the extended part 15c and the display part 15a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch operating member holding mechanism for mounting a switch operating member for opening and closing an electric contact piece of a switch on a base of a main body.

[0002]

2. Description of the Related Art Various switches are provided in various electric devices. Among such switches, slide the switch operating member to open and close the switch contact piece,
The so-called slide switch is often used to hold the state of each position of the switch operating member, such as turning on / off the power of the circuit and selecting various modes.

In such a slide switch, an opening corresponding to the movement range of the switch operating member is provided at the mounting position of the equipment, and the switch operating member is slidably clawd in this opening so that the switch operating member slides. Generally, the structure is such that the switch contact piece is connected and disconnected. Further, in order to prevent the switch operating member from easily coming off the mounting opening, a retaining member is often attached to the claw stopper portion.

[0004]

However, as described above, providing an independent retaining member or the like to prevent the switch operating member that is claw-fastened from falling off causes an increase in the manufacturing cost of the switch portion. It was.
Therefore, a switch operating member holding mechanism that has a simple structure and can be manufactured at low cost has been desired.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a switch operating member holding mechanism which has a simple structure and can be manufactured at low cost.

[0006]

In order to achieve the above object, according to the present invention, two leg portions are projected at a constant interval on the bottom surface of the switch operating member, and the inside of the two leg portions is projected. ,
A wedge-shaped engaging claw is provided on at least one side, and an opening corresponding to the movement range of the switch operating member is provided in the mounting portion of the switch operating member of the main body base, and the two leg portions are inserted into and engaged with the opening. Engage the pawl with the edge of the opening,
A part of the component attached to the main body base is inserted between the two legs of the switch operating member, and the two legs are restricted from approaching each other. In the second aspect, the component is a light guide member that guides the light of the light emitting diode incorporated in the vicinity of the switch operation member to the surface of the main body base.

[0007]

EXAMPLE An image input apparatus incorporating a switch operating member holding mechanism of the present invention will be described below as an example.
This will be described with reference to the drawings. FIG. 2 is an external perspective view of an image input device in which a switch operating member holding mechanism of the present invention is incorporated, and FIG. 3 is a perspective view of the switch panel portion as viewed from the back side. The image input device 2 includes an insertion unit 3
A photo film is put in or the image input device 2 is turned upside down, an image is taken in by a CCD camera built in the main body base 4, and a video signal of the taken image is output to a monitor TV or the like.

An operation panel 5 for performing various operations of the image input device 2 is provided on the front surface of the main body base 4. On the operation panel 5, a rotary switch 11 for selecting a type of an input image, dial switches 12a to 12d for controlling a color tone of the input image, a mask, and button switches 13a, 13b for respectively setting color adjustment, and this image input. A slide switch 14 for turning on / off the power of the entire apparatus 2 is provided. Furthermore, button switch 1
3b, a display unit 15a, 15b is provided beside the slide switch 14 to indicate the state of each switch.
The display portions 15a and 15b form a part of the light guide member 15 described later.

As shown in FIG. 1, the slide switch 14 comprises an electric contact piece 20 provided on the circuit board 10 and a switch operating member 16 for connecting and disconnecting the electric contact piece 20. The switch operating member 16 includes two legs 16
a and 16b are integrally provided, and an operation member mounting portion 17 provided on the operation panel 5 is further provided at the tip of the leg portion 16a.
An engaging claw 16c that engages with is integrally provided. The switch operating member 16 is movable within the range of the opening 17a provided in the operating member mounting portion 17 with the engaging claw 16c engaged with the operating member mounting portion 17.

Two legs 16 of the switch operating member 16
An extension 15c of the light guide member 15 is inserted between a and 16b. The light guide member 15 is a display unit 15 of the light guide member 15 that exposes the light from the light emitting diodes 18 a and 18 b provided on the circuit board 10 to the front surface of the operation panel 5.
a, 15b, and the tip of the extension 15c,
And fixing parts 15d, 15 provided beside the display part 15a.
It is fixed to the back surface of the operation panel 5 by e.

The operation of the embodiment having such a configuration will be described. When assembling the operation panel 5 of the image input device 2 using the switch operation member holding mechanism of the present invention, first, the rotary switch 11, the dial switches 12a to 12d, and the button switches 13a and 13b are attached to the operation panel 5. Mounted on the circuit board 10 and wired to the circuit board 10.

Then, the slide switch 14 is attached. While bending the legs 16a and 16b of the switch operating member 16 so as to be close to each other, the operating member mounting portion 1
7 into the opening 17a. Then, when the switch operating member 16 is completely inserted into the opening 17a, the engaging claw 16c of the leg portion 16a engages with the operating member attaching portion 17 provided on the operating panel 5.

Next, the light guide member 15 is fixed to the fixing portions 15d, 15
It is fixed to the back surface of the operation panel 5 with e. At this time, the extension portion 15c of the light guide member 15 is connected to the leg portion 1 of the switch operating member 16.
Insert between 6a and 16b. As a result, the legs 16a and 16b can be prevented from bending by simply attaching the light guide member 15 without providing a member or the like dedicated to preventing the switch operating member 16 from coming off, and the like with the engaging claw 16c. The engagement with the operation member mounting portion 17 cannot be easily released.

Finally, the light emitting diodes 18a and 18b are attached to the circuit board 10 so as to be close to the other ends of the display portions 15a and 15b, and the assembly of the operation panel 5 is completed. Then, the operation panel 5 is mounted on the main body base portion 4 of the image input device 2.

[0015]

As described above, according to the holding mechanism for a switch operating member of the present invention, two leg portions are provided at a constant interval on the bottom surface of the switch operating member for opening and closing the electric contact piece. A wedge-shaped engaging claw is provided on at least one of the two legs, and an opening corresponding to the range of movement of the switch operating member is provided in the switch operating member attachment portion of the main body base. The two claws are inserted and the engaging claws are engaged with the edge of the opening, and a part of the component attached to the main body base is inserted between the two claws of the switch operating member. Since the two legs are restricted from approaching each other, it is possible to provide the switch operating member holding mechanism which has a simple structure and can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a holding mechanism for a switch operating member of the present invention.

FIG. 2 is an external perspective view showing an image input device in which a holding mechanism for a switch operating member according to the present invention is incorporated.

FIG. 3 is a perspective view of the switch panel portion of FIG. 2 viewed from the back side.

[Explanation of symbols]

 4 Main Body Base 5 Operation Panel 14 Slide Switch 15 Light Guide Member 16 Switch Operation Member 16a, 16b Leg 16c Engagement Claw 17 Operation Member Attachment Section

Claims (2)

[Claims] 1. A holding mechanism for a switch operating member for mounting a switch operating member for opening and closing an electric contact piece on a base of a main body, wherein two leg portions are projected on a bottom surface of the switch operating member at a constant interval. A wedge-shaped engaging claw is provided on at least one of the two legs, and an opening corresponding to the range of movement of the switch operating member is provided in the mounting portion of the switch operating member of the main body base. Two leg portions are penetrated and the engaging claws are engaged with the edge portion of the opening,
A switch operating member, wherein a part of a component attached to the main body base is inserted between the two leg portions of the switch operating member so that the two leg portions do not approach each other. Retention mechanism. 2. The component is a light guide member for guiding the light of a light emitting diode incorporated in the vicinity of the switch operating member to the surface of the main body base.
A holding mechanism for the switch operating member described.