JPH044341Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a seesaw button device used in household electric appliances and the like.

(b) Prior Art A conventional example of this type of seesaw button device is the one described in Japanese Utility Model Application Publication No. 59-23129, for example. In the seesaw button device described in this publication, the both sides of the seesaw button in the width direction are held between elastic arms provided integrally with the frame on the back side of the mounting opening of the cabinet frame, and the elastic force of the elastic arms always holds the seesaw button. The upper surface of the frame body and the pressing surface of the seesaw button can be kept parallel.

However, in the above-mentioned seesaw button device, since the elastic arms are provided integrally with the frame, it is difficult to mold the frame, and the elastic arms cannot have good dimensions. Furthermore, since the elastic arms are molded together with the frame from synthetic resin, they have poor durability and also have the disadvantage that sufficient elastic biasing force cannot be obtained.

(c) Problems to be Solved by the Invention The present invention attempts to provide a seesaw button device that can hold the seesaw button horizontally without causing the above-mentioned drawbacks.

(d) Means for solving the problem A spindle rib is provided on the back side of the spindle provided in the center of the mounting opening formed in the frame body, and a spindle rib is provided on the back side of the spindle provided in the center of the mounting opening formed in the frame body, and a spindle rib is provided on the back side of the spindle provided in the center of the mounting opening formed in the frame body. A leaf spring is provided in which a contact portion that contacts the support rib and an elastic portion formed by being bent forward with respect to the corresponding contact portion extend on both sides of the fitting portion. A bearing part provided on the seesaw button was press-fitted into the supporting shaft, and the seesaw button was swingably attached so that the back surface was in contact with the elastic part.

(e) Function The leaf spring is supported by a support rib provided on the support shaft, and the elastic part of the leaf spring comes into contact with the back side of the seesaw button when it is not pressed, so that the pressed state of the seesaw button is released. Then, the seesaw button is returned to the horizontal state by the elastic restoring force of the leaf spring and is held in that state.

(f) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an external perspective view of a television receiver in which the seesaw button device of the present invention is implemented, and FIG. 1 is an exploded perspective view of the main parts thereof. In FIG. 2, a power switch 4 and a seesaw button 5 as a channel up/down switch used for channel selection are provided on the side of the screen section 3 of the front frame 2 of the cabinet 1 of the television receiver. The mounting structure of the seesaw button 5 is as shown in FIG. That is, the frame body 2 is provided with a mounting opening 6 into which the seesaw button 5 can be fitted, and a cylindrical support shaft 7 is provided in the center of the mounting opening 6 to horizontally suspend the seesaw button 5. A plate-shaped support rib 9 on which positioning pieces 8, 8, 8, 8 are formed is provided on the back side of the shaft 7. These support shafts 7, support ribs 9 and positioning pieces 8, 8, 8, 8
is provided integrally with the frame body 2 using synthetic resin when the frame body 2 is molded.

10 is a plate spring made of an elastic metal plate such as stainless steel, and the plate spring 10 includes a fitting part 11 having a semicircular cross section, a flat contact part 12 connected to the fitting part 11, "Ku" forward to the corresponding contact part 12
Pressing portions 13 formed by being bent into a letter shape are provided on both sides of the fitting portion 11. The plate spring 10 is press-fitted into the support shaft 7 with its fitting portion 11 guided by the positioning pieces 8, 8, 8, 8. The portion 12 abuts against the support rib 9 in surface contact. The seesaw button 5 made of synthetic resin is provided with blocking pieces 14, 14 at its upper and lower ends to prevent it from coming off, and a pair of bearings 15 for the support shaft 7 (the other is not shown) is formed in the center. This bearing portion 15 includes a shaft hole 16 and a narrow portion 1 connected to the shaft hole 16.
7 [The narrow portion 17 is smaller than the diameter of the support shaft 7],
It is comprised of insertion guide parts 18, 18 whose inner surfaces are widened in a tapered shape from the narrow part 17. Therefore,
The seesaw button 5 is attached by forcing the support shaft 7 into the shaft hole 16 by pushing the insertion guide portions 18, 18 apart. At this time, the tapered surface 19 of the blocking piece 14 comes into contact with the end of the mounting opening 6, and it is slightly elastically deformed and inserted into the back side of the frame 2. After insertion, the blocking pieces 14, 14 are elastically returned to their original positions. It is located at the back end of the mounting opening 6 and restricts the rocking range of the seesaw button.

FIG. 3 shows a cross-section of the main parts of the assembled seesaw button device with the seesaw button 5 swingably attached to the mounting opening 6 as described above. Although not shown in FIG. 1, On the back side of the seesaw button 5, there is a through hole 2 that is pre-drilled in the leaf spring 10.
Pressing protrusions 21a and 21b that are inserted through the holes 0 and 20 are integrally provided.

22 is a mounting boss 2 provided on the back side of the frame 2
3 and 23 with screws 24 and 24, and on the board 22 are provided push switches 25 and 26 that are turned on only when pressed. Therefore, if the seesaw switch 5 is pressed in the direction of arrow A, for example, the seesaw switch 5 is tilted as shown in FIG. 4, and the pressing protrusion 21a presses the push switch 25. When the pressed state is released, the elastic restoring force of the leaf spring 10 holds the seesaw button 5 in a state in which its pressing surface 27 is parallel to the front surface 28 of the frame body 2, as shown in FIG. In the above embodiment, the push switches 25 and 26 are selectively turned on by the press protrusions 21a and 21b inserted through the through holes 20 of the plate spring 10, but the push switches 25 and 26 are ,2
1b may be omitted, and the push switch 25 or 26 may be turned on directly by the pressure portion 13 of the leaf spring 10.

(g) Effects of the invention According to the invention, since a leaf spring is used, it is easy to form the frame that constitutes the seesaw button device. Further, since the seesaw button is held horizontally by the leaf spring, it is possible to obtain a seesaw button device that has excellent durability against pressure and can obtain a sufficient elastic biasing force.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view for explaining one embodiment of the seesaw button device of the present invention, Fig. 2 is an external perspective view of a television receiver using the same, and Fig. 3 is an example of the seesaw button device of the present invention. FIG. 4 is a cross-sectional view of the main part of the embodiment for explaining its usage condition. 2... Frame body, 5... Seesaw button, 6... Mounting opening, 7... Support shaft, 9... Support rib, 10... Leaf spring, 15... Bearing section, 22... Board, 25, 2
6...Putsushiyuswitch.

Claims (1)

[Claims for Utility Model Registration] A seesaw button device in which a seesaw button 5 is fitted from the front into a mounting opening 6 provided in a frame 2 to selectively operate two switches 25 and 26 fixed on a base plate 22, a support shaft 7 horizontally suspended in the center of the mounting opening 6 and provided integrally with the frame 2; a support shaft 7 located on the back side of the center of the support shaft 7;
and a support rib 9 provided integrally with the support shaft 7, and a pair of elastic parts 13, 13 formed by bending forward on both sides, and fitted with the center part of the support shaft 7 at the center. a plate spring 10 whose rotation about the support shaft 7 is restricted by the support rib 9; and a plate spring 10 that is integrally provided with the seesaw button 5;
A bearing part 15 is press-fitted into the support shaft 7 in order to swingably attach the seesaw button 5 to the support shaft 7 so that the pair of elastic parts 13, 13 come into contact with both sides of the back surface of the seeso button 5. and, provided at the upper and lower ends of the seesaw button 5, when the seesaw button 5 is fitted, the mounting opening 6 is opened.
It comes into contact with the end of the seesaw button 5 and is elastically deformed and inserted into the back side of the frame 2, and after this insertion, it is elastically restored and is located at the back end of the mounting opening 6, thereby controlling the swinging range of the seesaw button 5. Regulating blocking pieces 14, 14
The seesaw button device comprises: