JP2003207816A - Click device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a click device in which an energizing force acts in a wider range, as for the click device for moving a moving member to a prescribed position. <P>SOLUTION: The click device is assembled into the adapter main body 11 of a lens cap device 2A and a cap member 12 freely rotatably attached and movable between a closed position Pa and an open position Pc. The click device is constituted so that one click ball 37 comes near the inclined surface 12p0 of a wide click groove 12p in a state where the other click ball 36 comes halfway from the closed position Pa where the ball 36 is fitted into the click groove 12k to the open position Pc where the ball 36 is fitted to a clock groove 12m. Then, a force moving into the open position Pc is applied by the click ball 37 halfway from the closed position Pa to the open position Pc, then, the cap member is energized toward the open position Pc in the longer range. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a click device that positions a moving position of a moving member.

[0002]

2. Description of the Related Art In a conventional click device for performing click positioning, for example, a click device using a ball member and a V groove urged by a spring, when the moving member moves relative to a fixed member, the moving member is moved. When is moved to the vicinity of a predetermined positioning position, the ball member comes into contact with the inclined surface of the V groove. Therefore, the moving member receives a biasing force in the direction of the positioning position through the ball member, and a click operation (positioning operation) is performed.

[0003]

In the above-mentioned conventional click device, the ball member abuts the inclined surface of the single V groove at one positioning position of the moving member and moves relatively, In the click device having a wide positioning interval, the moving force (click force) by the V groove acts only in the very vicinity of the positioning position. For example, in a click device to be applied to a lens cap of a camera having a cap member that can be opened and closed,
The moving force for moving the cap member (moving member) toward the open position acts only near the predetermined open position.

Therefore, when the cap member, which is the moving member, is opened, if the opening operation is stopped at a position near the opening position, the cap member remains at that position. If the stop position is a position where the viewfinder cannot observe and the photographing light beam is kicked by the cap member, the photographing may be performed in that state.

In order to widen the range in which the moving force acts, for example, the groove depth of the V-groove may be increased, but the operating force increases as the size of the apparatus increases. Inevitable.

The present invention has been made to solve the above-mentioned problems, and provides a click device in which a moving force to a predetermined position acts in a wider range in a click device that click-drives a moving member. The purpose is to do.

[0007]

According to a first aspect of the present invention, there is provided a click device having a moving member, a first click groove for positioning the moving member at a predetermined position, and the moving member having the predetermined position. And a second click groove for moving the moving member in the first click groove direction, the moving member being located in front of the first click groove on the way to the predetermined position. On the way to the direction, the second click groove receives a moving force toward the predetermined position direction, and then the first click groove receives a moving force toward the predetermined position.

The click device according to claim 2 of the present invention is
The click device according to claim 1, further comprising a pair of ball members fitted into each of the first click groove and the second click groove, wherein the moving member is provided with the ball member through the ball member. Receive movement.

The click device according to claim 3 of the present invention is
The click device according to claim 1 or 2, wherein the moving member is a rotating member that rotates, and the first click groove and the second click groove are in the vicinity of an axis of the rotating member. It is located in.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A lens cap device incorporating a click device relating to the present invention will be described below prior to description of a click device according to an embodiment of the present invention. 1 (A), (B) and 2 (A), (B)
1A and 1B are a front view and a side view of a camera equipped with a lens cap device having a built-in click device related to the present invention. FIGS. 1A and 1B show a closed state of the lens cap device. FIG. 2A shows the lens barrel retracted state.
(B) shows a state in which the lens barrel is extended to a photographic position with the lens cap device open.

The lens cap device 2 mainly comprises an adapter body 11 and a cap member 12 which is a moving member (rotating member), and the lens barrel 5 of the lens barrel portion 4 on the camera body 3 side of the camera 1. Is detachably attached to the filter screw part via the adapter body 11. The lens barrel 5 holds the photographing lens 6 at the frontmost stage.

The cap member 12 is an adapter body 1.
1 is rotatably supported via the above-mentioned click device, and is rotated in a direction opposite to D0 or D0 around the rotation axis 13 along a plane orthogonal to the optical axis O of the lens frame 5 in FIG. The closed position Pa that covers the front surface of the taking lens 6 by operating
And an open position Pc retracted from the front surface of the taking lens 6. When the cap member 12 is in the open position Pc, the upper lens cap member 12 is retracted outside the photographing subject light flux range L1 taken into the photographing lens 6 as shown in FIG. 2B.

On the left and right side surfaces of the cap member 12,
A minute protrusion 12h for opening / closing operation is arranged, and a rubber member 22 which is an elastic member for cushioning the adapter body 11 is arranged above the inner surface of the cap member 12.

Further details of the configuration of the lens cap device 2 will be described with reference to FIGS. Figure 3
[Fig. 1] is a view of the lens cap device in a closed state seen from the photographing lens side, taken along the line AA of Fig. 1 (B). FIG. 4 is a cross-sectional view taken along the line BB of FIG. 3 showing the opening operation state of the lens cap device. FIG. 5 is a view showing a state in which the lens cap device is disengaged from the lens barrel by an external force acting on the cap member, taken along the line BB in FIG. FIG. 6 is a part of a view taken along the line AA of FIG. 1B showing the vicinity of the engaging member of the lens cap device in a state where the engaging member pressing plate is removed. FIG. 7 is an exploded perspective view of a click support portion between the adapter body and the cap member. FIG. 8 is a perspective view of an engaging member of the lens cap device. Figure 9
9A and 9B are views showing the state of the click groove portion of the cap member of the lens cap device, and FIG.
9B is a sectional view taken along line CC of FIG. 3 when the cap member is in the closed position and FIG. 9B is when the cap member is in the open position. 10A, 10B, and 10C are development views showing changes in the engagement state of the click ball portion and the click groove portion of the lens cap device, and FIG.
When the cap member is in the closed position, FIG. 10B shows that when the cap member moves out of the viewfinder field.
0 (C) is a development view when the cap member is in the open position.

The lens cap device 2 includes a lens barrel 5
An adapter main body 11 that is removable via the filter screw portion 5b, a cap member (cap portion, barrier portion) 12 that is rotatably supported by the rotation shaft 13 with respect to the adapter main body 11, and a cap member 12. A ball click portion for positioning at the closed position Pa and the open position Pc with respect to the adapter body 11, and a mounting means (attachment / detachment means) that can be engaged with or released from the filter screw portion 5b of the lens barrel 5. The coupling member 14, an engagement spring 18 composed of two compression springs for urging the engagement member 14 in the engagement direction, and a pressing plate 25 for pressing the engagement member 14 are provided.

As shown in FIGS. 3 and 4, the adapter body 11 is a ring-shaped member and has an optical axis O at the center.
11a corresponding to the opening of the taking lens 6 having
An engaging portion 11b which is engageable with the filter screw (female screw) 5b of the lens barrel 5 on the upper rear surface, a rotation shaft hole 11c extending in the left-right direction on the lower portion, and the rotation shaft hole 11c. A click ball hole 11d provided in the vicinity in parallel with the rotary shaft hole 11c, and a slide groove 11i along the direction (radial direction of the photographing lens) orthogonal to the optical axis O having a step portion 11h on the lower rear surface side.
And an engaging spring insertion recess 11e provided inside the slide groove 11i, a pressing plate mounting screw hole 11g, and the like.

The engaging portion 11b has an arcuate projection shape of a predetermined width that can be engaged with the filter screw 5b, and the lead of the screw is not necessary, but the lead may be provided.

The ball click portion comprises a click spring 16 which is a compression spring and one click ball 17. After the click spring 16 is inserted into the click ball hole 11d of the adapter body 11, the click ball 17 is inserted. The click ball 17 is biased by the click spring 16 and is held in a state of being capable of projecting to the inner wall surface 12d side of the cap member 12 which will be described later.
It can be slid on 12g (Figs. 7 and 10).

The cap member 12 is the adapter body 1.
1 is a disk-shaped member that covers the opening 11a, and includes a rotation shaft hole 12c for fitting the rotation shaft 13 provided in the lower two support portions, and the facing inner wall surfaces 12e and 12d of the support portion. Two click grooves 12f and 12g of substantially the same shape provided in the vicinity of the rotation shaft hole 12c on one inner wall surface 12d,
It has an edge portion 12a and the like which are provided on the lower side portion and which form a mounting / releasing means for the engaging member 14.

The click grooves 12f and 12g are
The arrangement angle is the rotation angle θc for opening and closing the cap member 12.
And the circumferential groove widths of the respective grooves are set so that the click ball 17 can be positioned.

The engagement member 14 is slidably inserted into the slide groove 11i of the adapter body 11 as shown in FIGS. 6 and 8 and is arcuately engaged with the filter screw 5b of the lens barrel 5. It has a protrusion 14 b, an insertion recess 14 e for the engagement spring 18, and a lower end face 14 a that is pressed by the edge 12 a of the cap member 12.

The engaging member 14 is pressed by a pressing plate 25 while being inserted into the slide groove 11i, and is supported slidably in a direction orthogonal to the optical axis O (radial direction of the photographing lens). When the lens cap device 2 is attached to the lens barrel 5, the engaging protrusion 14b is engaged with the filter screw 5b of the lens barrel 5 by the sliding movement of the engaging member 14, or the engagement thereof is performed. The state is released.

The engaging member 14 is urged outward by the engaging spring 18 and held, but when the lens cap device is removed, the step portion 11 of the slide groove 11i is held.
The h and the stepped portion 14h of the engaging member 14 are held in contact with each other. Further, the engaging protrusion 14b is provided with the filter screw 5
Any arc shape having a predetermined width that can be engaged with b is not required, and a screw lead is not necessary, but a lead may be provided. Also,
The pressing plate 25 is positioned by the positioning pin 11f, and the screw hole portion 11g of the adapter body 11 is fixed by the screw 26.
It is fixed in.

Next, the attaching / detaching operation to / from the lens barrel 5 and the opening / closing operation of the present lens cap device 2 having the above-mentioned structure will be described. When the lens cap device 2 is attached to the lens barrel 5, the lower end face portion 14a of the engaging member 14 is pressed against the engaging spring 18 and the adapter body 11 is inserted into the filter screw portion 5b of the lens barrel 5. The lower end 14
When a is released, the engaging portion 11b of the adapter body 11 and the engaging protrusion 14b of the engaging member 14 engage with the filter screw portion 5b as shown in FIG.
It becomes the wearing state.

When the lens cap device 2 is mounted, the cap member 12 covers the taking lens 6 in the closed position Pa.
(Fig. 1 (A), (B)), click ball 1
7 is fitted in the click groove 12f of the cap member 12 as shown in FIGS. 9 (A) and 10 (A), and the cap member 12 is held in the closed position Pa by receiving a predetermined click force. . In this state, the click ball 17 is brought into contact with the inclined surface inside the click groove 12f so that the cap member 12 is pressed in the closed position Pa direction and is held without play.

To open the lens cap device 2, the cap member 12 is rotated in the D0 direction as shown in FIG. The click ball 17 is caused by the turning operation.
Escapes from the click groove 12f. Cap member 12
Is rotated by an angle .theta.b to reach a position Pb outside the L2 range of the finder visual field, which is within the subject luminous flux range, as shown in FIG.
Approaches the inclined surface of the other click groove 12g. After that, since the urging force in the opening direction by the click ball 17 is applied, the cap member 12 surely rotates in the D0 direction.

Then, FIG. 4, FIG. 9 (B), and FIG. 10 (C)
When the cap member 12 is rotated to the opening angle θc as shown in, the click ball 17 fits into the click groove 12g. The cap member 12 reaches the open position Pc retracted from the photographing subject light flux range L1 and is held by receiving a predetermined click force, and the camera 1 is in a state capable of photographing (FIGS. 2A and 2B). ).

When the cap member 12 is in the above-mentioned open position Pc, the cap member 12 is inadvertently brought into contact with an obstacle, or the cap member 12 is erroneously operated excessively and an external force in the D0 direction is further applied. If the click ball 17
Escapes from the click groove 12g, and the cap member 12
It is possible to prevent damage due to the above-mentioned external force by escaping by moving extra in the direction of D0.

Further, when an external force is applied beyond the extra rotational movement of the cap member 12, as shown in FIG. 5, when the cap member 12 is turned to the vicinity of the turning position Pd, the edge portion of the cap member is turned on. Engaging member 14 by 12a
The lower end surface portion 14a of the is pressed, and the engaging member 14 slides in the upward direction (direction approaching the optical axis O). The sliding movement releases the engagement between the engaging protrusion 14b and the filter screw portion 5b of the lens barrel 5. Then, the lens cap device 2 is separated from the lens barrel 5 to prevent damage due to the external force.

When the cap member 12 pivots largely as described above, the pivot shaft support portion of the cap member 12 abuts on the abutment surface 11j around the pivot shaft of the adapter body 11 to cause the cap member 12 to rotate. Does not rotate relative to the adapter body 11 by a predetermined angle or more, and the periphery of the rotation shaft support portion is protected.

After the lens cap device 2 is opened as described above, the cap member 12 is placed in the anti-D state to bring it into the closed state.
By rotating in the 0 direction, as shown in FIG.
The lens cap device 2 can be closed by returning to the closed position Pa of (B).

According to the present lens cap device 2 described above, it can be easily attached to and detached from the lens barrel 5, and
There is no need to remove the lens cap device 2 when shooting,
The photographing lens can be opened by simply rotating the cap member. Further, since it is not necessary to remove the lens cap device 2 at the time of photographing, there is no fear of loss or the like, and the user can concentrate on photographing.

When the lens cap device 2 is in the open state, the cap member 12 in the open position Pa is additionally rotated in the opening direction even if the cap member 12 is inadvertently brought into contact with an obstacle or is erroneously operated. This prevents damage to the lens cap device 2. Further, when the cap member 12 is further rotated, the engagement member 14 is slid by the cap member 12, and the engagement between the adapter body 11 and the filter screw portion 5b of the lens barrel 5 is released.
The disengagement of the engaged state prevents the lens cap device 2 from being damaged.

Next, a lens cap device according to an embodiment of the present invention will be described with reference to FIGS. Figure 1
FIG. 1 is a view of the lens cap device according to the above-described embodiment in the closed state, as viewed from the photographing lens side. FIG. 12 is a sectional view taken along the line EE of FIG. 11 showing the opening operation state of the lens cap device. FIG. 13 is an exploded perspective view of the adapter body of the lens cap device and the click support portion of the cap member. 14A and 14B are views showing the state of the click groove portion when the cap member of the lens cap device is in the closed position, and FIG. 14A is a sectional view taken along the line FF of FIG. 11. 14B is a cross-sectional view taken along line GG of FIG. 15A and 15B are views showing the state of the click groove portion when the cap member of the lens cap device is in the open position, and FIG. 15A is a sectional view taken along line F-F of FIG. 11. FIG. 15 is a cross-sectional view when the cap member of FIG.
FIG. 12B is a sectional view when the cap member is in the open position in the GG sectional view of FIG. 11. 16 (A), (B),
(C) is a development view showing a change in the engagement state of the click ball portion and the click groove portion of the lens cap device,
FIG. 16 (A) shows when the cap member is in the closed position, and FIG. 16 (B) shows when the cap member is still in the finder field of view range (in the above-mentioned photographing subject light flux range).
FIG. 16C is a development view when the cap member is at the open position.

The lens cap device 2A of this embodiment is
The lens cap device 2 related to the present invention described above is different only in the structure around a click portion, which is a click device, and the other configurations are the same. Hereinafter, different parts will be described, but the same components will be described with the same reference numerals as the components of the lens cap device 2.

In the case of the lens cap device 2 related to the present invention, the cap member 12 is in the middle of the opening operation of the cap member 12 so that the cap member 12 is located at the position Pb '(in the light flux range of the photographic subject) (in the light flux range of the photographic subject). 12) or outside the finder field light flux range L2, but at a position Pb (FIG. 4) where the photographing light flux has fallen, if the user stops the rotation operation, the click ball 16 will move to the click groove 12g. Since it does not reach the inclined surface, the click biasing force in the opening direction does not act, and the cap member 12 stops at that position. In particular, when the cap member 12 is at the position Pb, the finder cannot detect it, and therefore, there is a possibility that shooting may be performed with the shooting subject light being kicked. Therefore, the user should check the position of the cap member while paying sufficient attention, and then check the position of the cap member 12 again.
Has to be pressed to rotate to the open position Pc, which is not convenient. The lens cap device 2A of the present embodiment solves the above problems.

The lens cap device 2A of this embodiment is
It has an adapter body 11A, a cap member 12A that is a moving member (rotating member), and a ball click portion that constitutes a positioning click device for the cap member 12A, and further, mounting means similar to the lens cap device 2 ( An engaging member 14 which is a detaching means), two engaging springs 18 for urging the engaging member 14 in the engaging direction, and an engaging member 14
And a pressing plate 25 for pressing.

As shown in FIG. 13, the ball click portion comprises a click spring 38 which is a compression spring and a pair of click balls 36 and 37 which are provided in parallel with the rotary shaft hole 11c of the adapter body 11A. The click spring 38 is inserted inside and the click balls 36 and 37 are inserted outside both of the through click ball holes 11k.

The click balls 36 and 37 are urged outward and are held so as to be able to project to the inner wall surface 12i side and the inner wall surface 12j side of the cap member 12A, which will be described later.

On the other hand, on the cap member 12A, the inner wall surface 1 of one of the two supporting portions provided with the rotation shaft holes 12c.
A click groove 12k that constitutes a click device and a click groove 12m that is a first click groove are provided near the rotation shaft hole 12c on the 2i. Furthermore, a click groove 12n and a click groove 12p, which are a second click groove, forming a click device are provided in the vicinity of the rotation shaft hole 12c on the other inner wall surface 12j of the support portion. Therefore, the click ball 36 can slidably contact the click grooves 12k and 12m, and the click ball 37 can slidably contact the click grooves 12n and 12p.

Further, FIGS. 14 (A), (B), 15
As shown in (A) and (B), the click grooves 12k and 1
2 m has an arrangement angle substantially equal to the opening / closing rotation angle θc of the cap member 12 with respect to the center of the rotation shaft 13, and each circumferential groove width is a groove width with which the click ball 36 can be positioned.

The click groove 12n is provided at a position facing the click groove 12k, and its circumferential groove width is
The groove width is the same as that of the click groove 12k so that the click ball 37 can be positioned. On the other hand, the click groove 12
p has an inclined surface 12p0 at a circumferential position that is close to the click groove 12n side with respect to the rotation angle θc of the cap member 12 to the open position, and the circumferential groove width positions the click ball 37. The groove width is wider than the groove width.

Therefore, when the cap member 12A rotates relative to the adapter body 11A in the D0 direction from the closed position Pa, the click ball 36 is in the middle between the click grooves 12k and 12m as shown in FIG. 16 (B). When it is at, the click ball 37 approaches the inclined surface 12p0 of the click groove 12p.

Next, the attachment / detachment to / from the lens barrel 5 and the opening / closing operation of the lens cap device 2A of the present embodiment having the above-described structure will be described. When the lens cap device 2A is attached to the lens barrel 5, the lower end face portion 14a of the engaging member 14 is pressed to attach the adapter body 11A to the filter screw portion of the lens barrel 5 as in the case of the lens cap device 2. When the lower end portion 14a is inserted into the lens cap device 5b and the lower end portion 14a is released, the lens cap device 2A is in a mounted state.

In the mounted state of the lens cap device 2A, when the cap member 12A is in the closed position Pa for covering the taking lens 6 (FIG. 12), the click balls 36, 3 are provided.
7 is fitted in the click grooves 12k and 12n of the cap member 12A as shown in FIGS. 14 (A), (B) and 16 (A), and the cap member 12A receives the predetermined click force and It is held at the closed position Pa. In this state, the click balls 36 and 37 respectively
The cap member 12A is held in the closed position Pa without backlash because the cap member 12A is in contact with each of the pair of inner inclined surfaces of 2k and 12n.

In order to open the lens cap device 2A, the cap member 12A is rotated in the D0 direction as shown in FIG. The turning operation causes the click balls 36 and 37 to escape from the click grooves 12k and 12n. The cap member 12 is rotated by the angle θb ′, and L2 indicating the finder visual field luminous flux range within the above-mentioned photographing subject luminous flux range.
16B, when the position Pb ′ near the inner boundary is reached.
As shown in FIG. 5, one click ball 36 is still on the inner wall surface 12i, while the other click ball 37 approaches the inclined surface 12p0 of the click groove 12p as described above. Therefore, thereafter, the click ball 37 generates a turning force for urging the cap member 12A in the D0 direction, and the cap member 12 automatically rotates in the D0 direction.

Then, when the click ball 36 side is brought into sliding contact with the inclined surface of the click groove 12m, the cap member 12A is formed.
Receives rotational force in the D0 direction via the click ball 36 and rotates by an angle .theta.c so that the click ball 36 fits into the click groove 12m (FIG. 16C). It should be noted that the click ball 37 does not apply a turning force around the rotation shaft 13 to the cap member in the click groove 12p.

Then, the cap member 12A is held at the open position Pc retracted from the light flux range L1 of the photographic subject by a predetermined click force (FIGS. 12, 15A).
(B)).

When the cap member 12A is in the above-mentioned open position Pc, if the cap member 12A is inadvertently brought into contact with an obstacle or if an erroneous operation is applied and an external force in the D0 direction is applied, the lens As in the case of the cap device 2, the cap member 12A is pivotally moved and escapes extra, so that the damage due to the external force is prevented.

Further, even when an external force more than the above-mentioned extra rotation acts on the cap member 12A due to an obstacle, the engaging member 14 is engaged with the edge portion 12a of the cap member 12A as in the case of the lens cap device 2. The lower end surface portion 14a of is pressed, and the engagement between the engagement protrusion portion 14b and the filter screw portion 5b of the lens barrel 5 is released. By releasing the engagement, the lens cap device 2A is separated from the lens barrel 5, and the damage caused by the external force is prevented.

After opening the lens cap device 2A,
Even in the closed state, as in the case of the lens cap device 2 of the first embodiment, the cap member 12 can be returned to the closed position Pa by rotating the cap member 12 in the direction opposite to the D0 direction.

According to the above-described lens cap device 2A of the present embodiment, it can be easily attached to and detached from the lens barrel 5 like the lens cap device 2, and the lens cap device 2A needs to be detached at the time of photographing. Absent.

In particular, when the cap member 12A is opened, if the cap member 12A is still within the finder field of view, even if the opening operation is inadvertently stopped, the urging force of the one click ball 37 in the opening direction acts. Therefore, the cap member 12A does not stay within the finder visual field range (within the photographing subject light flux range), and the cap member 12A is rotated to the open position without performing the above-mentioned inconvenient photographing. , Easy to use.

Further, when the lens cap device 2A is in the open state, the case where the cap member 12A in the open position Pa is inadvertently brought into contact with an obstacle is also the case of the lens cap device 2 of the first embodiment. Similar to cap member 1
2A is pivotally moved in the extra opening direction, or the lens cap device 2 is released by disengagement from the filter screw portion 5b of the lens barrel 5 by sliding movement of the engaging member 14.
Damage to A is prevented.

Based on the embodiment of the present invention described above, (1) a lens cap device for a lens barrel, which is located at a position covering the front surface of the taking lens and at a position retracted from the front surface of the taking lens. The barrier portion, the first click groove for locating the barrier member at the predetermined position, and the barrier member are located in front of the first click groove on the way to the predetermined position. It is possible to propose a lens cap device for a lens barrel, which has a second click groove for moving in the first click groove direction.

(2) Further, it is possible to provide a lens cap device for a lens barrel as described in the above item (1), which has a rotating shaft for rotating the barrier portion.

(3) The above (1), characterized in that it has an engaging portion for engaging with the filter screw of the taking lens.
A lens cap device for the lens barrel described in (2) can be proposed.

(4) Further, there is provided another engaging portion which engages with the filter screw of the taking lens, and the engaging portion is movable in the radial direction of the taking lens. A lens cap device for the above lens barrel can be proposed.

[0059]

As described above, according to the present invention, in the click device that click-drives the moving member, the positioning click force to the predetermined position acts in a wider range to surely move the moving member to the predetermined position. It is possible to provide a click device that can be moved to a position and can also make the device compact.

[Brief description of drawings]

FIG. 1 is a view showing a lens cap closed state of a camera equipped with a lens cap device incorporating a click device related to the present invention and a lens barrel retracted state;
1A and 1B are a front view and a side view, respectively.

2 is a diagram showing a state in which a lens cap of a camera equipped with the lens cap device of FIG. 1 is opened and a lens barrel is extended to a photographing position;
(A) and (B) are a front view and a side view, respectively.

3 is a view of the lens cap device of FIG. 1 in a closed state as viewed from the side of the taking lens, taken along the line AA of FIG. 1 (B).

4 is a sectional view taken along line BB of FIG. 3 showing an opening operation state of the lens cap device of FIG.

5 is a state in which the cap member of the lens cap device of FIG. 1 is removed from the lens barrel by an external force acting on the cap member;
It is the figure shown by the -B cross section.

FIG. 6 is a part of a view taken along the line AA of FIG. 2B showing the surroundings of the engagement member with the engagement member pressing plate of the lens cap device of FIG. 1 removed.

7 is an exploded perspective view of a click support portion between the adapter body and the cap member of the lens cap device of FIG.

8 is a perspective view of an engagement member of the lens cap device of FIG.

9 is a view showing a state of a click groove portion of the cap member of the lens cap device of FIG. 1, wherein FIG. 9 (A) shows the cap member in the closed position and FIG. 9 (B) shows the cap member in the open position. FIG. 4 is a sectional view taken along line C-C of FIG.

FIG. 10 is a development view showing changes in the engagement state of the click ball portion and the click groove portion of the lens cap device of FIG. 1, and FIG. 10 (A) shows the state when the cap member is in the closed position. FIG. 10B is a development view when the cap member is moved out of the viewfinder field, and FIG. 10C is a development view when the cap member is in the open position.

FIG. 11 is a view of the lens cap device having the click device according to the embodiment of the present invention in a closed state as seen from the photographing lens side.

12 is a sectional view taken along line EE showing the opening operation state of the lens cap device of FIG.

13 is an exploded perspective view of an adapter body of the lens cap device of FIG. 11 and a click support portion of a cap member.

14 is a diagram showing a state of the click groove portion when the cap member of the lens cap device of FIG. 11 is in the closed position, and FIG. 14 (A) is a sectional view taken along line FF of FIG.
4B is a sectional view taken along line GG of FIG. 11.

15 is a view showing a state of the click groove portion when the cap member of the lens cap device of FIG. 11 is in the open position, and FIG. 15 (A) is a sectional view taken along line F-F of FIG.
5B is a sectional view taken along line GG of FIG.

16 is a development view showing a change in the engagement state of the click ball portion and the click groove portion of the lens cap device of FIG. 11, and FIG. 16 (A) shows the state when the cap member is in the closed position. 16B is a development view when the cap member is still within the finder visual field range, and FIG. 16C is a development view when the cap member is in the open position.

[Explanation of symbols]

12A ... Cap member (moving member, rotating member) 12m ... click groove (first click groove) 12p ... click groove (second click groove) 36, 37 ... Click ball (a pair of ball members)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Naohiro Tsuchida             2-43 Hatagaya, Shibuya-ku, Tokyo Ori             Inside Npus Optical Industry Co., Ltd. F-term (reference) 2H083 BB16 BB24                 3J105 AA02 AA03 AA04 AA12 AB11                       AB24 AC06 DA15 DA22 DA23                       DA32

Claims (4)

[Claims] 1. A moving member, a first click groove for locating the moving member at a predetermined position, and a moving member located in front of the first click groove on the way to the predetermined position, A second click groove for moving the moving member in the first click groove direction, and a click device. 2. The click device according to claim 1, further comprising a pair of ball members that are fitted into the first click groove and the second click groove, respectively. 3. The moving member is a rotating member that rotates, and the first click groove and the second click groove are
The click device according to claim 1 or 2, wherein the click device is arranged in the vicinity of an axis of the rotating member. 4. The first click groove and the second click groove each have an inclined surface, and the inclined surface of the second click groove is in the middle of one of the pair of ball members slidingly contacting each other. 3. The click device according to claim 2, wherein the other of the pair of ball members starts sliding contact with the slope of the first click groove, and then the moving member is positioned at the predetermined position.