JPH11327014A - Fitting structure for release button - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fitting structure for release button by which a camera is advantageously made compact in size and low in cost. SOLUTION: The release button 22 is fitted by the way that a pressing operation part 2202 is housed in a recessed part 24 and a coil spring 28 is wound around the circumference of a shaft part 2204, the tip part of the shaft part 2204 is inserted in a shaft-part inserting hole 26, then a screw member 2208 is screwed in a female screw 2206 from the back surface 1402 of a camera case 14 and clamped then tightened and fixed. The head part 2208A of the screw member 2208 is slightly larger than the hole 26. Then, the part of a camera body 30 is positioned at the back surface 1402 of the case 14 where the head part 2208A faces by giving a gap between the back surface 1402. Besides, a release switch 32 is arranged at the part of the body 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a release button of a camera.

[0002]

2. Description of the Related Art In many cameras, a release button is attached by a structure as shown in FIG. That is, the release button 52 is
The release button 52 is provided on the surface of the
Is a pressing operation portion 5202 that can be pressed, a shaft portion 5204 protruding from the back surface of the pressing operation portion 5202, and a plurality of locking members protruding downward from circumferentially spaced locations on the back surface of the pressing operation portion 5202. And a claw 5206. In order to accommodate such a release button 52, a recess 56 is formed in the camera case 54 at a predetermined depth large enough to accommodate the pressing operation section 5202, and a shaft insertion hole 58 is formed in the bottom wall of the recess 56. The locking claws 52 are formed at a plurality of locations circumferentially spaced around the bottom wall of the recess 56.
A hole 60 is formed for locking the claw portion 5208 at the tip of 06 on the back surface of the camera case 54.

The camera case 5 in which the recess 56 is located
4 and a camera body 62 at an interval from the rear surface 54.
A release switch 64 is disposed on the portion of the camera body 62, and the release switch 64 is provided with first, second, and third spaced-aparts in the extending direction of the shaft 5204. Electrical contacts 6401, 6402, 64
03. Attach the release button 52
The pressing operation portion 5202 is housed in the concave portion 56, and the coil spring 66 is wound around the shaft portion 5204 inside the plurality of locking claws 5206, and the tip of the shaft portion 5204 is inserted into the shaft portion insertion hole 58. Then, the plurality of locking claws 5206 are inserted into the hole 60 while being bent inward in the radial direction of the pressing operation portion 5202. As a result, the plurality of locking claws 5206 attempt to return due to their elasticity, and the claw 5208 at the tip is located outside the hole 60, and the release button 52 is attached to the camera case 52 in a state where the release button 52 is prevented from dropping. When the pressing operation section 5202 of the release button 52 is pressed, when the so-called half-press is performed, the shaft section 5204 presses the first electric contact piece 6401 of the release switch 64,
Before the first electric contact 6401 contacts the second electric contact 6402 to release the shutter, a photometric operation or a photometric distance measuring operation is performed.
02 is in contact with the third electric contact piece 6403 to open and close the shutter.

[0004]

However, in such a conventional release button 52, the pressing operation section 520
A plurality of locking claws 5206 for preventing the release button 52 from dropping also reciprocate along with the shaft portion 5204 in the space between the back surface of the camera case 54 and the camera body 62 by the pressing operation on the two. A space for moving the locking claw 5206 must be secured around the movement locus of the shaft portion 5204 between the back surface of the camera case 54 and the camera body 62. There was a disadvantage. In particular, as shown in FIG.
In the case where the release button 52 is arranged at the center of the rotating body such as 6, the switch operated by the rotation of the rotating body is arranged outside the space for moving the locking claw 5206. This is extremely disadvantageous in achieving compactness. In addition, the shape of the locking claw 5206 is complicated,
There was also a disadvantage in reducing the price of the release button 52.
The present invention has been devised in view of the above circumstances, and an object of the present invention is advantageous in achieving a compact camera.
Another object of the present invention is to provide a release button mounting structure that is advantageous in reducing the cost.

[0005]

In order to achieve the above object, the present invention relates to a mounting structure of a release button provided on a surface of a camera case so that the release button can be pressed. Part, a shaft part protruding from the center of the pressing operation part, a female screw formed coaxially with the shaft part on an end surface of the shaft part, and a diameter larger than the shaft part screwed to the female screw. And a screw member having a head portion, a recess is formed in the camera case at a predetermined depth large enough to accommodate the pressing operation portion,
A shaft insertion hole having an inner diameter larger than the diameter of the shaft and smaller than the diameter of the head of the screw member is formed to penetrate from the center of the bottom wall of the concave portion to the back surface of the camera case, and Is housed in the recess, and a coil spring is wound around the shaft portion, and the tip of the shaft portion is inserted into the shaft portion insertion hole. On the back surface of the camera case, the shaft portion is inserted into the shaft portion insertion hole. The screw member is screwed into a female screw of the inserted shaft portion, and is fixedly fastened. Further, according to the present invention, the coil spring is formed such that a head of the screw member abuts on a back surface of a camera case in a state where a screw member is screwed and fixed to the female screw of the shaft portion. It is characterized by. Further, according to the present invention, there is provided a camera case in which a portion of the camera body is located on the back surface of the camera case where the shaft portion insertion hole is located at an interval on the back surface, and a portion of the camera body facing the shaft portion insertion hole. A release switch is provided so as to be able to contact the head of the member. Further, the present invention is configured such that the release switch has a first state in which distance measurement or photometry is performed and a second state in which a shutter is opened and closed, and the screw member is moved toward the head. The first state is formed by moving, and the second state is formed by further moving. Further, the present invention is characterized in that the pressing operation portion is formed in a disk shape, and the shaft portion is formed in a column shape coaxially with the pressing operation portion. Further, the present invention is a mounting structure of a release button provided on the surface of the camera case so as to be able to be pressed, wherein the release button has a pressed operation portion that can be pressed and a shaft portion that protrudes from the center of the pressed operation portion. Wherein the shaft portion is disposed so as to be inserted from the front surface of the camera case to the rear surface thereof, and a spring is provided for urging the pressing operation portion in a direction away from the front surface of the camera case,
The head of the screw member attached to the tip of the shaft portion is formed so as to be able to contact the back surface of the case.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a camera, and FIG. 2 is a sectional view of a release button portion. In FIG. 1, reference numeral 12 denotes a camera, 14 denotes a camera cover, 16 denotes a photographing lens, 18 denotes a strobe light emission window, 20 denotes a finder window, and the finder window 20 incorporates a photometry and distance measuring device. Is provided with a release button 22.

The release button 22 includes a pressing operation portion 2202 that can be pressed, a shaft portion 2204 protruding from the back surface of the pressing operation portion 2202, and a shaft portion 2204 coaxial with the shaft portion 2204.
Female screw 2206 formed in an open shape on the tip surface of
And a screw member 2208 which is screwed into the female screw 2206 and has a head portion 2208A having a diameter larger than that of the shaft portion 2204.
It is composed of In the present embodiment, the pressing operation portion 2202 is formed in a disk shape, and the shaft portion 2204 is formed in a column shape coaxial with the pressing operation portion 2202. In the camera case 14, a concave portion 24 having a circular cross section and a predetermined depth is formed to be large enough to accommodate the pressing operation portion 2202 of the release button 22. At the center of the bottom wall 2402 of the concave portion 24, the shaft portion 22 of the release button 22
04 and the head 2 of the screw member 2208
A shaft portion insertion hole 26 having an inner diameter smaller than the diameter of 208 </ b> A is formed through the back surface 1402 of the camera case 14.

The release button 22 is mounted by pressing the pressing operation part 2202 in the recess 24 and the shaft part 22.
The coil spring 28 is wound around the periphery of the shaft portion 2.
The tip of 204 is inserted into the shaft insertion hole 26. Reference numeral 2212 indicates a step for preventing the coil spring 28 from oscillating. Then, a screw member 2208 is screwed into the female screw 2206 from the back surface 1402 of the camera case 14, and the head 2208 A of the screw member 2208 is fastened and fixed in a state in which the head 2208 A is in contact with the tip end surface of the shaft 2204. As a result, the release button 22 is prevented from dropping out of the concave portion 24, and in this state, the upper surface of the pressing operation portion 2202 is
Is configured so as to be located at a position slightly above the surface of.

Further, the camera case 1 in which the recess 24 is located
4, a portion of the camera body 30 is positioned at an interval from the back surface 1402, and the camera body 30
The release switch 32 is arranged at the portion. The release switch 32 includes first, second, and third electric contact pieces 320 that are arranged at intervals in the direction in which the shaft portion 2204 extends.
1, 3202, and 3203. When the pressing operation section 2202 of the release button 22 is pressed, when the so-called half-press is performed, the head 2 is integrated with the shaft section 2204.
208A moves and pushes the first electric contact 3201 of the release switch 32, and before the first electric contact 3201 comes into contact with the second electric contact 3202 to release the shutter, a photometric operation or photometric distance measurement is performed. When the operation is performed and further depressed, the second electric contact 3202 becomes the third electric contact 3203.
, And the shutter is opened and closed.

According to this embodiment, the release button 2
By pressing operation 2, the back surface 1402 of the camera case 14
The part that moves from the camera body 30 to the camera body 30
4 and a head 2208A having a larger diameter than the shaft 2204.
It is. Therefore, by ensuring the range of the locus of movement of the head 2208A on the back surface 1402 side of the camera case 14, the pressing operation of the release button 22 and the operation of the release switch 32 are not hindered. In this case, head 2
Since 208A is sufficient with a diameter slightly larger than the shaft insertion hole 26, according to the present embodiment, in order to operate and operate the release button 22 and the release switch 32, the rear surface 1402 of the camera case 14 It is only necessary to secure a minimum space, which is advantageous in making the camera 12 compact.

Therefore, as shown in FIG. 4, even when the release button is arranged at the center of the rotating body such as the mode dial 66, the switch operated by the rotation of the rotating body is moved to the center of the release button. Since the camera 12 can be arranged at a position close to the camera, it is extremely advantageous in making the camera 12 compact. Further, the configuration of the release button 22 includes a pressing operation portion 2202, a shaft portion 2204, and a female screw 22.
06 and the screw member 2208, which is advantageous in reducing the cost. Further, by interposing a washer between the distal end surface of the shaft 2204 and the head 2208A, or by changing the head 2208A to a screw member 2208 having a different thickness, the release button 22 can be half-pressed or fully-pressed. Can be easily changed.

[0012]

As is clear from the above description, the present invention
A release button mounting structure provided on the surface of the camera case so as to be able to be pressed, wherein the release button includes a pressing operation portion that can be pressed and a shaft portion protruding from the center of the pressing operation portion, A spring is provided so as to be inserted from the front surface of the camera case to the rear surface thereof, and biases the pressing operation unit in a direction away from the front surface of the camera case. The head is formed so as to be able to contact the back surface of the case. Therefore, according to the release button mounting structure of the present invention, it is advantageous in reducing the size of the camera, and is also advantageous in reducing the cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a camera.

FIG. 2 is a sectional view of a release button mounting structure according to the embodiment.

FIG. 3 is a sectional view of a conventional release button mounting structure.

FIG. 4 is a perspective view of a camera.

[Explanation of symbols]

 Reference Signs List 14 camera cover 22 release button 2202 pressing operation section 2204 shaft section 2208 screw member 24 concave section 26 shaft section insertion hole 28 coil spring 32 release switch

Claims (6)

[Claims] 1. A mounting structure for a release button provided on a surface of a camera case so as to be capable of being pressed, wherein the release button comprises:
A shaft portion protruding from the center of the pressing operation portion, a female screw formed coaxially with the shaft portion at an end surface of the shaft portion, and a head having a diameter larger than the shaft portion and screwed to the female screw; A recess having a predetermined depth large enough to accommodate the pressing operation portion in the camera case, and having a diameter larger than the diameter of the shaft portion and a head of the screw member. A shaft insertion hole having an inner diameter smaller than the diameter is formed to penetrate from the center of the bottom wall of the recess to the back surface of the camera case, and the pressing operation unit is housed in the recess and a coil is formed around the shaft. A spring is wound around, and the tip of the shaft portion is inserted into the shaft portion insertion hole.On the back surface of the camera case, the screw member is screwed to a female screw of the shaft portion inserted into the shaft portion insertion hole, It is tightened and fixed, The mounting structure of the release button that. 2. In a state in which a screw member is screwed and fixed to the female screw of the shaft portion, the coil spring is formed so that a head of the screw member abuts a back surface of a camera case. The release button mounting structure according to claim 1, wherein: 3. A portion of the camera body, which is located on the back surface of the camera case where the shaft portion insertion hole is located, with an interval on the back surface, and a portion of the camera body facing the shaft portion insertion hole,
The release button mounting structure according to claim 1, wherein a release switch is disposed so as to be able to contact a head of the screw member. 4. The release switch is configured to have a first state in which distance measurement or photometry is performed and a second state in which a shutter is opened and closed, and wherein the release button is located on a head side of the screw member. 4. The release button mounting structure according to claim 3, wherein the first state is formed by moving the shutter button, and the second state is formed by further moving the shutter button. 5. The device according to claim 1, wherein the pressing operation portion is formed in a disk shape, and the shaft portion is formed in a column shape coaxially with the pressing operation portion. The release button mounting structure described in the section. 6. A mounting structure for a release button provided on a surface of a camera case so as to be able to be pressed, wherein the release button comprises:
A spring protruding from the center of the pressing operation unit, wherein the shaft is inserted from the front surface of the camera case to the rear surface, and biases the pressing operation unit in a direction away from the front surface of the camera case. Wherein a head of a screw member attached to a tip of the shaft portion is formed so as to be able to abut on a back surface of the case.