JP2536024Y2 - Push button device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a pushbutton device provided with an urging member for setting a pressing force for operating a pushbutton.

`` Conventional technology '' Conventionally, the urging force for the pressing force of the release button of a camera or the like is independently set by each maker, for example, as described in Japanese Patent Publication No. 37-8428, The shutter is set to operate with a pressing force of 200 to 300 g.

"Problem to be solved by the invention" The pressing force that is pressed to operate the release button is important for the user, but because it is designed to be constant by each manufacturer, depending on the user, May not match. Therefore, when the release button is pressed, camera shake is likely to occur.

This invention was made in view of such circumstances,
It is an object of the present invention to provide a push button device that can easily change the urging force of a release button once set by each maker according to a user's preference.

[Means for Solving the Problems] In order to solve the above problems, the push button device of the present invention is provided at a lower portion of a notch (15) provided on the back surface side of the main body exterior (1) and the push button (2). The push button (2) removably inserted into the opening formed in the exterior (1) by the claw portion (3), and the push button (2) projects downward to the center of the back surface of the push button (2). A contact member (4) that is provided and that can be pressed against a tact switch (6) fixed to a receiving plate (8), and that a biasing force is applied to the push button (2) in a direction opposite to a pressing direction. The urging member (5) includes a rectangular central portion (5a) connected to the push button (2), and two opposing central portions (5a) of the central portion (5a). A plurality of legs (10) provided with notches (9), each of which is provided to extend on the side, and made of an elastic body. And wherein the door.

[Operation] The urging member that applies the urging force to the push button is deformed, such as by bending or cutting, so that the urging force is adjusted, and the push button can be operated with a pressing force according to the user's preference.

"Example" Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

 FIG. 1A is a sectional view showing an embodiment of the present invention.

A release button 2 is removably inserted into an opening 1 formed in the exterior 1 of the camera body. The release button 2 protrudes from the outer periphery of the lower end, engages with the lower surface of the exterior 1, and a claw portion 3 that regulates the upward movement of the release button 2,
It has a contact member 4 which is provided at the center and protrudes downward, and which can press-contact the tact switch 6 fixed to the receiving plate 8. The release button 2 is provided with a leaf spring, which is an urging member 5 that elastically urges the release button upward and engages the claw portion 3 with the exterior 1. The release button 2 is pressed against the urging force of the urging member 5 and the contact member 4 is
By pressing against the shutter, the shutter operates. As shown in FIG. 1B, a plurality of cutouts 15 are formed on the outer periphery of the opening of the exterior 1 so that the claw portion 3 can be inserted so that the release button 2 can be easily attached to and detached from the exterior 1. It is provided in. Insert the release button 2 through the notch 15,
When the claw 3 rotates so as to come to the position indicated by the dotted line, the claw 3 is engaged with the bottom surface of the exterior 1 by the urging force of the urging member 5, and the release button 2 is fixed.

The urging member 5 is configured as shown in FIG. 1C when the push button device is shipped from a manufacturer or sold. The biasing member 5 is formed by integral molding of a thin metal plate, and projects downwardly by four each from a rectangular central portion 5a and left and right sides of the central portion 5a (the central portion 5a faces the central portion 5a). (Extends to two sides respectively) and has a total of eight legs 10 having elasticity. The left leg and the right leg are positioned so as to face each other, and the legs on each side are laterally separated from each other. Notches 9 are formed on both sides of each leg 10 so that the leg 10 can be easily separated from the center 5a from the notch 9. Therefore, by cutting off a predetermined number of legs 10, the urging force of the urging member 5 can be reduced and adjusted to a desired urging force. For example, per leg
If it has a biasing force of 50 g, it means that it has a biasing force of 400 g in total. Therefore, when the left leg and the right leg are separated one by one as shown in FIG. 1D, the biasing force becomes 300 g, and the left leg and the right leg are separated as shown in FIG. 1E. When two pieces are separated, a biasing force of 200 g is obtained. As shown in FIG. 1F, when two legs are separated from each other and three pieces of the other leg are separated, a biasing force of 150 g is obtained. Of course, when separating the legs, it is preferable to separate them so that the left and right sides are substantially equal as described above in consideration of stability. In addition, once the legs are separated, the biasing force cannot be restored. Therefore, the notch 9 is cut with appropriate strength so that the legs can be separated by bending the legs five or six times. deep. In this case, it is not necessary to separate the legs, and if the legs are bent outward so that the legs can be returned to the original position so that no elastic force is applied, the reduced biasing force is applied to the legs again. Can be increased by undoing.

2A and 2B are cross-sectional views showing a push button device related to the present invention.

In this example, the cylindrical contact member 4 provided on the release button 2 has a large-diameter upper portion formed with a male screw by an appropriate length along the vertical direction thereof, and no male screw formed. It consists of a small diameter lower part. The upper portion of the coil spring 20 is engaged with the outer periphery of the male screw with a constant contact pressure. The lower end of the coil spring 20 is fixed to a spring fixing member 11 provided on the receiving plate 8. The lower part of the contact member 4 is loosely inserted into the lower part of the coil spring 20. Thus, the lower part of the coil spring 20 can freely expand and contract in the vertical direction, and as a result, the urging force can be applied to the release button 2. still,
An opening through which the contact member 4 can be inserted is formed in the spring fixing member 11 above the tact switch 6, and the contact member 4 descends from this opening to press the tact switch 6.

In an initial state such as at the time of sale, the coil spring 20 is wound up to the upper end of the male screw as shown in FIG. 2A, and is in the most extended state as a coil spring. The urging force of the coil spring 20 with respect to the release button 2 is determined by the number of turns of a portion located in a vertical range 21 below the contact member 4. Therefore, in this state, the portion of the range 21 has the smallest number of turns of the coil spring, and thus has the weakest urging force. To further increase the urging force of the coil spring, the release button 2 integrated with the contact member 4 is rotated in the direction of the arrow. The contact member 4 and the coil spring 20
When the contact member 4 rotates due to the formation of the screw pair, the coil spring 20 shifts downward in the lower end direction as shown in FIG. 2B. As a result, the upper part of the coil spring is partially lowered to the portion indicated by the range 21, the number of turns of the coil spring increases in this range, and the urging force increases. Conversely, when the urging force is to be reduced from this state, the release button 2 is rotated in the direction opposite to the arrow. Then, the coil spring 20 expands, and the urging force decreases. That is, the urging force can be adjusted by rotating the release button 2 in a predetermined direction. In this embodiment, unlike the embodiment shown in FIGS. 1A to 1F, the biasing force can be adjusted steplessly.

3A to 3C show a push button device related to the present invention.

In this example, nine circular holes are formed on the lower surface of the release button 2 on the same circumference. These holes are grouped together with three holes having an interval of 120 ° from each other. The holes in the groups have different depths, and the holes in the same group are formed to have the same depth. As a result,
As shown in FIGS. 3A and 3B, the distance between the bottom surface of the hole of the group denoted by reference numeral 50 and the receiving plate 8 is H ₂ ,
It groups hole in indicated by 51 is H _3, and that of holes in the group indicated by reference numeral 52 is formed to be H _4. The distance between the lower surface and the receiving plate 8 of the release button 2 is set to H _1. The relationship of H ₁ of H ₄ is
_{H 1 <H 2 <H 3} < has become a H _4. On the other hand, the contact member 4
A cylindrical holder 30 is rotatably and coaxially mounted on the outer periphery of the abutting member 4. The upper surface of the holder 30 is provided with three holes of the same group, and an upper part thereof can be inserted by 120 ° from each other.
A spaced cylindrical insertion member 31 is protruded. An urging member 32 (a coil spring or the like) that applies an urging force to the release button 2 is provided between the holder 30 and the receiving plate 8.

First, the upper end of the three insertion members 31 is the release button 2
Is located at a position where it comes into contact with the lower surface of the. The urging member 32 is in the most compressed state, and therefore the urging force is the largest. Next, release the release button 2 from the exterior 1
Rotate 30 to insert three insertion members 31 into the holes of the first group 50. Then, the urging member 32 is slightly extended, and the urging force is reduced. When the same operation is performed thereafter and the three insertion members 31 are inserted into the holes of the group 52, the urging member 32 becomes the most extended state, and the urging force becomes the smallest. Therefore, the biasing force can be adjusted by rotating the holder 30 and changing the insertion position of the insertion member 31. In this case, the surface of the release button 2
As shown in FIG. 3C, if a number is attached, the current state of the biasing force can be easily confirmed.

In the above-described embodiment, the tact switch 6 is pressed by the contact member 4. However, the tact switch 6 may be pressed by the claw 3.
Further, this push button device is not limited to a release button of a camera, and can be applied to various button devices. For example, in a word processor or the like, a push button operated with the index finger gives a relatively large urging force, and a push button operated with the little finger gives a relatively small urging force, thereby improving the work efficiency.

[Effects of the Invention] In a device having a push button, a user can easily obtain a desired pressing force of the push button by deforming an urging member that applies an urging force to the push button.

[Brief description of the drawings]

1A to 1F show an embodiment of the present invention, FIG. 1A is an overall sectional view, FIG. 1B is a plan view showing a structure for easily attaching and detaching a release button, and FIG. 1C. Is a perspective view showing the initial biasing member, FIGS. 1D to 1F are perspective views of the biasing member deformed to different states, respectively, FIGS. 2A and 2B are pushbuttons related to the present invention. FIGS. 3A to 3C are cross-sectional views showing the device in different operation states, and FIGS. 3A to 3C also show a push button device related to the present invention. FIG. 3A is an overall cross-sectional view, and FIG. 3B-3B sectional view,
FIG. 3C is a plan view of the release button. 1 ... exterior, 2 ... release button, 3 ... claw part, 4 ... contact member, 5 ... urging member, 6 ... tact switch, 8 ... receiving plate, 15
…… Notch, 30 …… Holder.

Claims (1)

(57) [Scope of request for utility model registration] A notch (15) provided on the back side of the body exterior (1) and a claw (3) provided below the push button (2) form an opening formed in the exterior (1). The push button (2) removably inserted into the push button (2) and the tact switch (6) fixedly mounted on the receiving plate (8) are provided so as to protrude downward at the center of the back surface of the push button (2). A biasing member (5) adapted to apply a biasing force to the push button (2) in a direction opposite to a pressing direction, wherein the biasing member (5) is provided. ) Are provided so as to extend respectively to a rectangular central portion (5a) connected to the push button (2) and two opposite sides of the central portion (5a), and are made of an elastic body.
A push button device comprising: a plurality of legs (10) having notches (9).