JPH11338004A - Release switch of camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust a first stroke amount up to the turning-on of a first switch, a second stroke amount up to the turning-on of a second switch and further, the projection amount of a release button with respect to a camera cover. SOLUTION: The release switch 1 of a camera is constituted to include first, second and third electric armatures 11, 12 and 13, a holding member 20 of them, an instruction member 30 constituting a stopper of the second and third armatures 12 and 13, the release button 40, an adjusting member 50, a moving member 60, the camera cover 70, etc. The armatures 11, 12 and 13 are made of materials having electric conductivity and elasticity and placed side by side at intervals in a state that the plate surfaces of the top ends are faced toward the release button 40. Then, base end parts are screwed/fixed on a camera main body 31 by a screw 22, in such a manner that spacers 21 made of insulating materials are interposed between the armatures respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera release switch.

[0002]

2. Description of the Related Art A general camera release switch is
It is not only a switch for the shutter operation but also a two-stage switch which has a switch for performing a photometric operation and a focus detection operation before the shutter operation.

However, such a two-step release switch can be used by a beginner who is not accustomed to operating the camera to operate the camera by half-pressing the release button. First operation or focus detection operation
The amount of both strokes: the first stroke until the switch is turned on, and the second stroke until the second switch is turned on, which starts the shutter operation by further pressing the release button. By setting the value to be long, reliable operation becomes possible.

On the other hand, in the case of a user who places importance on the shutter chance, the user waits for the shutter chance while keeping the release button half-pressed (the first switch is ON). It is necessary to open and close (-ON the second switch).
For this purpose, by pressing the release button halfway, the first stroke until the first switch for starting the photometric operation and the focus detection operation is turned on, and then by further pressing the release button, the shutter operation is performed. By setting the amount of the second stroke short among the second strokes until the start of the second switch, the operation can be promptly performed.

As a camera that solves these problems,
It is also disclosed in JP-A-09-325407. As shown in FIG. 7, in Japanese Patent Application Laid-Open No. 09-325407, by adjusting the male screw member 134, the distance between the distal end portions of the first electric contact piece 104 and the second electric contact piece 106, and Second electrical contact 106 and third electrical contact 1
08, the distance between the leading end of the shutter and the release stroke from the half-pressed state to the opening and closing of the shutter can be changed according to the preference of the camera user. Can be adjusted.

On the other hand, when the camera is operated while wearing gloves in a cold region or the like, it is preferable that the release button protrudes from the exterior cover in a moderately large amount. By setting the first stroke amount until the first switch for starting the operation is turned on to be long, a reliable operation can be performed even in such a situation.

As a camera that solves these problems,
It is also disclosed in JP-A-02-89037.
JP-A-02-89037 discloses that the release button 210 is rotated to release the release button shaft 230 as shown in FIG.
When the adjustment member 220 is removed from the adjustment member 220, the adjustment member 220 can be easily exchanged, and as shown in FIG.
Is changed until the first switch for starting the photometry operation or the focus detection operation is turned on.
The amount of work can be adjusted. L2 of the adjusting member 220
By changing the length, the protrusion amount of the release button with respect to the holder 250 (exterior cover) can also be adjusted.

In other words, not only the stroke amount of the release switch raised in the above problem, but also the user's individual preferences and requirements differ not only in the protrusion amount of the release button.

[0009]

However, the above conventional example has the following disadvantages.

In the configuration disclosed in Japanese Patent Application Laid-Open No. 09-325407, as shown in FIG. 7, the camera cover 140 is disposed immediately above the male screw member 134 for performing the stroke adjustment. The male screw member 134 could not be turned unless it was removed from the like. Further, after the stroke adjustment is completed, the camera cover 140 must be attached to the camera body or the like again. In order to remove the camera cover 140 or rotate the male screw member 134 to perform the stroke adjustment, A tool such as a driver is also required. As a result, in the above-described conventional example, not only the stroke adjustment work cannot be easily performed, but also the stroke adjustment work by the user himself is very difficult. In this configuration, the camera cover 14 is used.
It is also impossible to adjust the release amount of the release button to 0.

On the other hand, in the configuration disclosed in Japanese Patent Application Laid-Open No. 02-89037, as shown in FIG. 8, by exchanging the adjusting member 220, the amount of projection of the release button with respect to the holder 250 (exterior cover) and the It is possible to adjust the first stroke amount until one switch is turned on, but it is impossible to adjust the second stroke amount until the second switch is turned on.

The present invention focuses on the above problems, and accordingly, an object of the present invention is to provide a first stroke amount until the first switch is turned on and a second stroke amount until the second switch is turned on. The amount of damage to the camera cover
An object of the present invention is to provide a release switch of a camera which makes it possible to easily adjust the projection amount of the push button and all of these adjustments.

[0013]

In order to achieve the above object, a release switch of the camera according to the first aspect of the present invention performs a photographing preparation operation by a first stroke by pressing a release button. Following the first stroke, the release switch of the camera for taking a picture in the second stroke by further pressing the release button is released.
First, second, and third electric contact pieces arranged at a distance from each other below the release button, and contacting the electric contact pieces, and a release button is provided at a tip end of the release button. And an adjustment member having conductivity that moves integrally with the
The first electrical contact is provided with a hole at a position corresponding to the tip of the release button, the hole being larger than the diameter of the leading end of the adjusting member, and the second electrical contact is provided with a release button. At a position corresponding to the tip of the first electric contact piece.

According to a second aspect of the present invention, there is provided a moving member having a shaft held by a holding member and capable of moving in a vertical direction, a release button being detachable from the moving member, and And an adjusting mechanism comprising the adjusting member held by at least one of the moving member and the release button. Further, the invention according to claim 3 is characterized in that the adjustment mechanism enables adjustment of the projection amount of the release button, and the invention according to claim 4 is characterized in that the adjustment mechanism includes a photometric operation and a focus detection switch. The first stroke of the switch until the switch is turned on is varied. The invention according to claim 5, wherein the adjusting mechanism performs the second stroke until the switch for starting the shutter operation is turned on. It is variable.

In the above configuration, the adjustment member can be changed without removing the camera cover or the like. As a result, the first stroke amount until the first switch is turned on,
The adjustment of the second stroke amount until the second switch is turned on, the projection amount of the release button with respect to the camera cover, and all of these can be easily performed.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of a release switch of a camera according to the present invention. In the figure, a release switch 1 of a camera is shown.
Are the first electrical contact 11, the second electrical contact 12, the third electrical contact 13, the first to third electrical contacts 11, 12, 1;
3, a pointing member 30, a release button 40, an adjusting member 50, a moving member 60, a camera cover 70, and the like, which serve as stoppers for the second holding member 20, the second and third electric connecting pieces 12, 13. .

First electrical contact 11, second electrical contact 1
Each of the second and third electric contact pieces 13 is made of a material having conductivity and elasticity, and is formed of a substantially strip-shaped leaf spring. The end plate faces are arranged in the direction of the release button 40 at intervals. The base end is screwed to the camera body 31 with a spacer 21 made of an insulating material interposed between the electric contacts.
It is fastened and fixed. The contact portion 11c of the first electric contact piece 11 always comes into contact with the step contact portion 50c of the adjustment member 50, and urges the release button 40, which moves integrally with the adjustment member 50, to push it upward. ing. The second electric contact piece 12 is urged in the direction of the release button 40, and is attached to the regulating portion 30 a of the support member 30 by the tip 12.
The position is regulated by the contact of c. Similarly the third
Of the electric contact piece 13 is urged in the direction of the release button 40, and the restricting portion 30b of the support member 30 has a tip portion 13c.
The position is regulated by abutting the.

The release button 40 comprises an operation section 40a and a screw section 40b which are actually operated. The adjusting member 50 is made of a conductive material (or surface treatment).
In order to adjust the protrusion amounts of the first stroke, the second stroke and the release button 40, it is possible to replace the adjustment member with another adjustment member having a different shape. The moving member 60 has a female screw portion 60b and an adjusting member 50 inside thereof.
The female screw part 60b is paired with the screw part 40b of the release button 40, and the outer peripheral part 60a is fitted to the hole 70a of the camera cover 70 so as to be movable in the vertical direction. Have been. Also, on a part of the outer circumference,
A groove 60e for fitting the retaining ring 61 is formed. The camera cover 70 is a camera exterior part (upper cover).
Is equivalent to

FIG. 2 is a plan view of the release switch of the camera shown in FIG. 1. In FIG. 2, the release button 40, the adjusting member 50, the moving member 60, the camera cover 70 and the like are omitted. FIG. 3 is an enlarged view of the adjustment shaft 50 in the same manner.

The X-marked portion shown in FIG.
0, the center of the movement axis of the adjustment member 50 and the movement member 60, and the first electric contact piece 11 is longer than the diameter D2 of the tip end of the adjustment member 50 shown in FIG. A hole 11b having a hole shape is provided, and the second electric contact piece 12
A hole 12b having a size equal to or larger than the hole 11b of the first electric contact piece 11 is provided. The first electric contact piece 11 has an embossed contact portion 11 near the hole 11b.
a is provided. Terminals 11e, 12e, and 13e are formed on the electrical contact pieces 11, 12, and 13, respectively, and lead wires are connected to each of them by soldering, for example, and are connected to a camera circuit (not shown). Further, a pin 20a is erected from the holding portion 20, and a hole is also formed at the base end of each of the electrical contact pieces 11, 12, 13 so that the pin 20a is inserted. Thereby, screw 2
The rotation of each of the electric contact pieces 11, 12, 13 about the center 2 is prevented.

In FIG. 3, the adjusting member 50 has a diameter D2 of the second stroke adjusting portion 50b and a first stroke adjusting portion 50b.
diameter D1 of the release button, and diameter D of the release button protrusion amount adjusting portion 50f.
The diameter increases in the order of 3, and has a step contact portion 50c and a step portion 50e. The step contact portion 50c abuts on the contact portion 11c of the first electric contact piece 11, so that the tip contact portion 50a of the adjustment member 50 also becomes a signal contact equivalent to the first electric contact piece 11. The step 50e is provided with the moving member 6
The stopper button 60d of the release button 40 and the female thread 60b of the moving member 60 are tightened by the screw portion 40b of the release button 40 and the release button protrusion amount adjusting portion 50f is adjusted as a stopper of the release button 40. The member 50 is fixed. The adjusting member 50 has a length L up to a step contact portion 50c based on a step portion 50e that abuts against the stopper portion 60d of the moving member 60.
1, the first stroke can be adjusted until the first switch is turned on. Similarly, the release button can be adjusted by changing the length L3 up to the release button protrusion amount adjusting portion 50g. It is possible to adjust the amount of protrusion of the forty. Further, the tip contact portion 50a based on the step contact portion 50c
The second switch is turned on by changing the length L2
The adjustment of the second stroke until the adjustment is made possible. At the time of adjustment, several adjustment axes having different lengths of the L1, L2, and L3 of the adjustment axis 50 are prepared, and the adjustment axes are replaced with adjustment axes that suit the user's preference.

FIG. 4 shows a release button 4 shown in FIG.
It is a perspective view when 0 was removed, and is a figure which shows rotation stop of the moving member 60 and the camera cover 70. In the figure, a moving member 60 is provided with a flange portion 60 having two sides.
e, and the camera cover 70 is provided with a rotation restricting seat 70b so as to form a two-way groove 70c. When the release button 40 is attached or detached, the release button 40 is pushed in to engage the two-way groove 70c of the camera cover 70 with the two-way groove of the flange 60e of the moving member 60, so that the screw can be securely inserted. Can be removed and tightened. With such a configuration, the release button 40 is apparently integrated with the moving member 60 and the adjustment shaft 50, and is spring-biased upward by the first electric contact piece 11. When performing the first and second stroke adjustments and the release button protrusion amount adjustment, only the release button 40 is removed, and the adjustment shaft 50 can be taken out.

FIGS. 5 and 6 are sectional views for explaining the operation of the release switch of the camera according to one embodiment of the present invention. The operation will be described with reference to FIGS.

As shown in FIG. 5, when the release button 40 is half-pressed, the step contact portion 50c of the adjustment shaft 50 fixed integrally with the release button 40 is brought into contact with the first electric contact piece 1.
Since the first electric contact piece 11 is in contact with the first contact portion 11c, the first electric contact piece 11 bends, the contact section 11a and the contact portion 12a of the second electric contact piece 12 conduct, and the photometric operation and the focus detection operation are started. The first switch is turned on. As a result, the aperture amount of the lens aperture and the shutter time are appropriately set, and the distance to the subject is calculated to adjust the focal length.

Next, as shown in FIG.
0 is further pressed, the second electrical contact 12
2a and the contact portion 11a of the first electrical contact portion 11 are in contact with each other, so that the contact portion 11a is bent together with the first electrical contact portion 11, and the tip contact portion 50a of the adjusting shaft 50 and the third electrical contact portion 13 The contact portion 13a conducts, that is, the first electric contact piece 11 and the third
Is turned on, the second switch for starting the shutter operation or the like is turned on, and thereby the shutter is turned on.
, The shutter is opened and closed to expose the film or the like.

A method of adjusting the stroke amount and the protrusion amount in the above-described configuration will be described with reference to FIGS.

When the release button 40 is depressed, and the release button 40 is rotated in a state where the two-way groove of the flange portion 60e of the moving member 60 and the two-way groove 70c of the camera cover 70 are engaged. The screw portion 40b is loosened, and the release button 40 can be removed. Thereby, the adjustment shaft 5
Since 0 can be removed, it is replaced with another adjustment shaft 50 prepared in advance. Next, the release button 40 is again rotated in the direction opposite to the previous direction, and the release button 40 is pushed in, so that the two-way groove of the flange portion 60e of the moving member 60 and the two-way groove 70c of the camera cover 70 are moved. In the engaged state, the screw portion 40b is tightened.

Here, for example, L2 of the adjustment shaft 50 before replacement is set.
In contrast, when the length of L2 of the separate adjustment shaft 50 is replaced with a longer one, only the distance between the contact portion 50a at the distal end of the adjustment shaft 50 and the contact portion 13a of the third electric contact piece 13 can be reduced. Therefore, the first stroke amount until the first switch is turned on and the protrusion amount of the release button with respect to the camera cover do not change, and only the second stroke amount until the second switch is turned on is set short. Can be. Therefore, this is an advantageous setting when the release button 40 is half-pressed to wait for a photo opportunity and a picture is taken at the photo opportunity.

For example, if the length of L1 of another adjusting shaft 50 is made shorter than that of L1 of the adjusting shaft 50 before replacement, and the length of L2 is further shortened, the length of the first contact piece is reduced. The distance between the contact portion 11a and the contact portion 12a of the second electric contact piece 12 is increased, and the tip contact portion 50a of the adjustment shaft 50 is
The distance between the electric contact piece 13 and the contact portion 13a can be increased.
Therefore, the projection amount of the release button with respect to the camera cover changes, and both the first stroke amount until the first switch is turned on and the second stroke amount until the second switch is turned on are set long. be able to. Therefore, this setting is advantageous when a beginner who is not used to operating the camera operates the camera.

For example, if the length of L3 of another adjustment shaft 50 is made longer and the length of L1 is made shorter than that of L3 of the adjustment shaft 50 before replacement, the camera cover of the release button 40 is replaced. 70, and the first
Contact portion 11a of the contact piece and the contact point 12 of the second electrical contact piece 12
The distance from a can be increased. Therefore, the second switch is ON
The second stroke amount until the camera cover
, The amount of protrusion of the release button can be set large, and the first stroke amount until the first switch is turned ON can be set long. Therefore, this is an advantageous setting when the camera is operated while wearing gloves in a cold region or the like.

That is, according to the present embodiment, by adjusting the length of each of L1, L2, and L3 of the adjustment shaft 50,
The first stroke amount until the first switch is turned on, the second stroke amount
The second stroke amount until the switch is turned on, and
Each of the protrusion amounts of the release button with respect to the camera cover can be adjusted separately.

[0032]

According to a second aspect of the present invention,
This corresponds to the camera cover 70 in the embodiment.

[0033]

As described above, according to the present invention, the first stroke amount until the first switch is turned on, the second stroke amount until the second switch is turned on, and further, the camera cover. Of the release button can be individually adjusted to meet the delicate requirements of various camera users.

Further, since the adjustment can be performed without removing the camera cover or the like and without using a tool such as a driver, a quick adjustment work can be performed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a release switch of a camera according to the present invention.

FIG. 2 is a plan view showing an example of a release switch of the camera according to the present invention.

FIG. 3 is an enlarged front view of the adjustment member of FIG. 1;

FIG. 4 is a partially sectional perspective view showing a state where a release button of FIG. 1 is removed.

FIG. 5 is a sectional front view for explaining the operation of the release switch of the camera according to the present invention.

FIG. 6 is a sectional front view for explaining the operation of the release switch of the camera according to the present invention.

FIG. 7 is a sectional front view of a release switch of a conventional camera.

FIG. 8 is a sectional front view of a release switch of another conventional camera.

FIG. 9 is an enlarged front view of the adjustment member of FIG. 8;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 release switch 11 first electric contact 12 second electric contact 13 third electric contact 20 holding unit 30 indicating member 40 release button 50 adjusting member 60 moving member 70 camera cover

Claims (5)

[Claims] 1. A camera in which a photographing preparation operation is performed by a first stroke by pressing a release button, and a photographing is performed by a second stroke by further pressing a release button after the first stroke. A first, a second, and a third electrical contact which are arranged below the release button at a distance from each other; An adjusting member having conductivity which moves integrally with the release button at the tip of the release button; and the first electric contact piece is provided with the adjusting member at a position corresponding to the tip of the release button. A hole larger than the diameter of the foremost part of the member is provided, and a hole equal to or larger than the hole of the first electric contact is formed in the second electric contact at a position corresponding to the tip of the release button. Release switch for camera characterized by being provided 2. A moving member having a shaft held by a holding body and capable of moving in a vertical direction, a release button being detachable from the moving member, and a movable member and a release button being connected to the moving member. At least one
2. A release switch for a camera according to claim 1, further comprising an adjusting mechanism comprising said adjusting member held by said one member. 3. A release switch for a camera according to claim 2, wherein said adjustment mechanism enables adjustment of a projection amount of a release button. 4. A relay according to claim 2, wherein said adjusting mechanism changes a first stroke of a switch until a photometric operation or a focus detection switch is turned on.
Switch. 5. The switch according to claim 1, wherein the adjusting mechanism includes a second strobe switch until a switch for starting a shutter operation is turned on.
3. A release switch for a camera according to claim 2, wherein the switch is variable.