JP2002267914A - Lick mechanism for optical component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a click mechanism for optical component which can remove vibration at the time of click engagement while positioning accurately an optical component having an optical element in a slide moving direction. SOLUTION: Either of an optical component 3 having an optical element and a stationary side member 4 is provided with a click groove 9 for positioning the slide moving direction of the optical element. The other of the optical component 3 or the stationary side member 4 is provided with a click body 10 which engages into the click groove 9 according to the slide movement of the optical component 3. An impact relieving member 11 is further fitted and mounted in the click groove 9. The depth thickness of the impact relieving member 11 is set at a thickness by which an impact at the time of the click engagement of the click body 10 into the click groove 9 is relieved and made into a predetermined impact. The impact to be caused at the time of the click engagement is relieved and made into the predetermined impact while such highly accurate mechanical positioning as the click engagement is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a click mechanism for an optical component having an optical element and sliding.

[0002]

2. Description of the Related Art When switching an optical element, for example, by sliding a lens or a filter, or when enlarging or reducing an object by sliding a lens, these optical elements are mechanically moved in the sliding direction. There is known a click mechanism for accurately positioning the click mechanism.

[0003] Specifically, the click mechanism is, for example, a click groove provided in a slidable optical component having the above-mentioned optical element, and is urged against and comes into contact with the optical component. A click body that engages with the click groove in accordance with the slide movement, and the click body engages with the click groove to accurately position the optical component at a predetermined position in the slide movement direction.

[0004]

However, the above-mentioned click mechanism generates vibration due to impact when the click is engaged. Here, some of the devices having the above-mentioned optical element do not like vibration, and it is desired to remove vibration at the time of click engagement.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and enables vibration removal at the time of click engagement while accurately positioning an optical component having an optical element in a sliding movement direction. It is an object to provide a click mechanism for an optical component.

[0006]

According to the present invention, there is provided a click mechanism for an optical component, comprising: an optical component having an optical element and sliding;
A click mechanism for an optical component to be applied, wherein one of the optical component and the fixed side member is provided with a click groove for positioning the sliding direction of the optical element, and the other of the optical component and the fixed side member is provided with an optical component. A click body that engages with the click groove in accordance with the sliding movement of the part is provided. The click body is fitted and installed in the click groove, and the depth thickness is set so that the impact when the click body engages with the click groove is moderately reduced. It is characterized by having a set shock absorbing member.

[0007] According to the click mechanism of the optical component having the above-described structure, the click engagement between the click groove and the click body is performed in the highly accurate mechanical movement in the slide movement direction. The shock to be generated is reduced by the shock absorbing member fitted into the click groove and mounted to have a predetermined depth.

Here, as a specific example of the above configuration, a click groove is provided in the optical component, and a click body is provided in the fixed member, and the click body is urged against the optical component to come into contact therewith. Configuration. Thereby, the click mechanism is simply configured.

When the click groove and the shock absorbing member have a depth portion having a width in the sliding movement direction larger than the sliding movement width on the opening side of the groove, the shock absorbing member is fitted into the clicking groove and is made of, for example, an adhesive. When the optical component slides, especially when the shock absorbing member is rubbed in the sliding movement direction by the click body, it is possible to prevent the shock absorbing member from coming out of the click groove by simply mounting without bonding.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a click mechanism for an optical component according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view showing the outline and operation of a click mechanism of an optical component according to a first embodiment of the present invention, in which (a) is a plan view showing a state before a click body is engaged with a click groove; (B) is a top view showing the state where the click body was engaged with the click groove.

In the first embodiment, a lens holder (optical component) 3 having a plurality of lenses (optical elements; not shown) is provided.
However, it is intended for a device that switches a lens by sliding in a horizontal direction in the figure. The lens holder 3 has, for example, a rectangular flat shape and slides in accordance with the driving of the driving source. However, the lens holder 3 can be applied to manual sliding.

A click mechanism 8 for positioning the lens holder 3 at a predetermined position in the slide movement direction is formed corresponding to each lens, and each of the click mechanisms 8 is arranged along the slide movement direction on the side surface (upper side in the figure) of the lens holder 3. The click grooves 9 (only one is shown in the figure) disposed at a predetermined distance from each other, and each of the click grooves 9 is urged against the side surface of the lens holder 3 to come into contact with the side surface of the lens holder 3 and slide. And a click body 10 engaged with the click body 9.

The click body 10 is a bearing (cylindrical body).
And is provided on the fixed side member 4 for the lens holder 3. The fixed member 4 includes a support shaft 12 that rotatably supports the click body 10, a leaf spring 13 that supports the support shaft 12, and a leaf spring mounting bracket 14 to which the leaf spring 13 is attached. The click body 10 is constantly brought into contact with the side surface of the lens holder 3 by the urging force of the leaf spring 13. As shown in FIG. 1B, the lens holder 3 is slid by being click-engaged between the open-side edge portions of the click groove 9 so that a part of the outer peripheral surface of the click body 10 is fitted. And the desired lens is selected.

These lens holder 3 and click body 1
Numeral 0 is made of metal so that the positioning by the click engagement can be performed with high accuracy. Note that the lens holder 3 and the click body 10 are not entirely made of metal, and the click grooves 9 are not used.
Alternatively, only the outer peripheral surface of the click body 10 may be made of metal. In addition, as long as positioning can be performed with high accuracy, a hard material other than metal may be used.

Here, in the present embodiment, in particular, the click groove 9 has a substantially cylindrical shape whose axis is parallel to the axis of the support shaft 12 and a part of its peripheral edge is opened outward. The click groove 9 is fitted with a columnar shock absorbing member 11 made of rubber.

The depth of the shock absorbing member 11 and the click groove 9 in which the shock absorbing member 11 is fitted (the thickness in the direction perpendicular to the slide movement direction; the thickness in the vertical direction in the drawing) is such that the shock at the time of the click engagement is reduced. The thickness of the relaxing member 11 is set to a predetermined relaxing value.

According to the click mechanism 8 configured as described above, when the lens holder 3 is slid to select a desired lens, the click body 10 is moved to the lens holder 3.
It rotates while touching the side of.

When the click groove 9 reaches the click body 10 in accordance with the sliding movement of the lens holder 3, FIG.
As shown in (a), the click body 10 is
(Before the click body 10 collides with the open side edge A on the far side in the sliding movement direction of the click groove 9) before contacting with the shock absorbing member 11, the shock absorbing member 11 It is fitted between the open side edges of the click groove 9 while being crushed in the depth direction (see FIG. 1B).

Therefore, the impact at the time of the click engagement is reduced, and the occurrence of vibration is suppressed. Further, at this time, since both the click groove 9 and the click body 10 are made of metal, the positioning in the slide movement direction by the mechanical and highly accurate click engagement is performed with higher accuracy.

Here, if the click groove has the same depth thickness as that of the prior art (a depth thickness shorter than that of the present embodiment), there is little crushing of the shock absorbing member fitted and mounted in the click groove. The impact is not sufficiently reduced,
Although the occurrence of vibration is not sufficiently suppressed, in the present embodiment,
Since the shock absorbing member 11 whose depth thickness is set so as to reduce the impact at the time of the click engagement to a predetermined degree is fitted and mounted in the click groove 9, highly accurate mechanical positioning called click engagement is performed. At the same time, the impact that occurs when the click is engaged is reduced to a predetermined extent. Therefore, vibration can be removed at the time of click engagement while accurately positioning the lens holder 3 (the selected lens) in the sliding direction.

The click groove 9 and the shock absorbing member 11
However, since the shock absorbing member 11 is formed in a substantially cylindrical shape, the shock absorbing member 11 is simply fitted into the click groove 9 and attached without being adhered by, for example, an adhesive. When the click body 11 is rubbed in the sliding movement direction by the click body 10, the impact relaxation member 11 is prevented from falling out of the click groove 9. For this reason, assembling of the click mechanism 8 is facilitated, and the manufacturing cost is reduced.

The structure for preventing the shock-absorbing member from coming out of the click groove is not limited to the substantially columnar shape. What is necessary is just a structure provided with the depth part of the moving direction width.

FIG. 2 is a plan view showing the outline and operation of a click mechanism for an optical component according to a second embodiment of the present invention. In the second embodiment, a plurality of filters (optical elements) 20a and 20b are provided, and for example, a filter holder (optical component) 23 having a rectangular flat plate shape slides in the left and right direction in the drawing to form the filters 20a and 20b. It is intended for devices that perform switching.

The difference between the click mechanism 28 of the second embodiment and the click mechanism 8 of the first embodiment is that
The point is that a ball plunger 24 is used instead of the click body 10, the support shaft 12, and the leaf spring 13 formed of a bearing. The ball plunger 24 is configured such that the ball portion 24a is used as a click body,
Is biased so as to come into contact with the side surface of the main body. The ball plunger 24 is mounted on a ball plunger mounting bracket (not shown) as a fixed-side member. The configurations of the click groove 9 and the shock absorbing member 11 are the same as those of the first embodiment, and the click groove 9 is formed corresponding to each of the filters 20a and 20b.

Even with this configuration, the filter holder 2
3 (selected filter) can be accurately positioned in the slide movement direction, and vibration can be removed at the time of click engagement.

In the first and second embodiments, the click groove and the shock-absorbing member are not limited to the substantially cylindrical shape. It is also possible to use a square pillar-shaped click groove and an impact-reducing member. However, in this case, since the shape of the shock absorbing member is likely to fall out because the shape is a substantially rectangular prism, it is preferable that the shock absorbing member is fixed to the click groove with an adhesive or the like. Thus, even when the shape is a substantially square prism,
Similarly to the above, it is necessary to set the depth of the shock absorbing member and the click groove to a thickness at which the shock absorbing member moderately reduces the shock at the time of the click engagement.

FIG. 3 is a view showing the outline and operation of a click mechanism for an optical component according to a third embodiment of the present invention.
(A) is a longitudinal sectional view, (b) is a side view. In the third embodiment, a cylindrical lens barrel (optical component) 33 including the lens 30 slides in the left-right direction in the drawing,
It is intended for equipment that scales objects.

The difference between the click mechanism 38 of the third embodiment and the click mechanism 28 of the second embodiment is that the click mechanism 9 is replaced with a click groove 9 and is formed corresponding to a predetermined enlarged or reduced position. An annular click groove 39, which is disposed at a predetermined distance from each other along the sliding movement direction of the outer peripheral surface of the cylinder 33, is provided.
This is the same as the second embodiment in that a ball-type plunger 24 is used instead of 1 in that an impact-absorbing member 31 made of an annular rubber is fitted and fitted in the click groove 39.

Even with this configuration, it goes without saying that vibration can be removed at the time of click engagement while accurately positioning the lens barrel 33 (lens) in the sliding movement direction.

As described above, the present invention has been specifically described based on the embodiment. However, the present invention is not limited to the above embodiment. For example, in the above embodiment, the shock absorbing members 11 and 31 are made of rubber. However, resin or the like may be used as long as it has a cushioning effect.

In the above embodiment, a click groove is provided in the optical component that slides, and a click body is provided in a fixed member for the optical component, and the click body is urged against the optical component to make contact with the optical component. By adopting the configuration, the configuration of the click mechanism is simplified and the cost is reduced, but a click body may be provided on the optical component and a click groove may be provided on the fixed member. Further, the biasing is not limited to the click body, and it is also possible to bias a member having a click groove.

Further, the sliding movement is not limited to the linear movement, but can be applied to a curved movement.

[0033]

The click mechanism for an optical component according to the present invention provides a click groove for positioning the optical element in the sliding direction in one of the optical component having the optical element and the fixed member, and the optical component or the fixed component. On the other of the side members, a click body that engages with the click groove according to the sliding movement of the optical component is provided, and furthermore, an impact relaxation member is fitted and mounted in the click groove, and the depth of the impact relaxation member is set to the click groove. On the other hand, the thickness is set to a certain value to reduce the impact when the click body click-engages.
While the high-precision mechanical positioning of the click engagement is performed, the impact that is generated at the time of the click engagement is reduced to a predetermined extent. For this reason, it is possible to perform the vibration removal at the time of the click engagement while accurately positioning the optical component having the optical element in the sliding movement direction.

[Brief description of the drawings]

FIG. 1 is a plan view showing the outline and operation of a click mechanism of an optical component according to a first embodiment of the present invention, in which (a) is a plan view showing a state before a click body is engaged with a click groove; (b) is a plan view showing a state where the click body is engaged with the click groove.

FIG. 2 is a plan view showing the outline and operation of a click mechanism of an optical component according to a second embodiment of the present invention.

FIGS. 3A and 3B are views showing an outline and operation of a click mechanism of an optical component according to a third embodiment of the present invention, wherein FIG. 3A is a longitudinal sectional view and FIG. 3B is a side view.

[Explanation of symbols]

3 ... Lens holder (optical component), 4 ... Fixed side member, 8,
28, 38: click mechanism, 9, 39: click groove, 1
0, 24a: click body, 11, 31: shock absorbing member,
13: leaf spring, 20a, 20b: filter (optical element), 23: filter holder (optical part), 24: ball plunger, 30: lens (optical element), 33: lens barrel (optical part).

Claims (3)

[Claims] 1. A click mechanism for an optical component which is applied to an optical component having an optical element and slidably moving and a fixed side member for the optical component, wherein the click mechanism of the optical component is provided. A click groove for positioning the optical element in the sliding movement direction is provided on one of the optical elements, and a click body is provided on the other of the optical component or the fixed side member to engage with the click groove in accordance with the sliding movement of the optical component. An optical shock-absorbing member that is fitted and mounted in the click groove, and has a depth-mitigating member whose depth thickness is set so as to reduce the impact when the click body is engaged with the click groove in a predetermined manner. Click mechanism for parts. 2. The optical component, wherein the click groove is provided, and the fixed body is provided with the click body, and the click body is urged against the optical component to make contact therewith. The click mechanism for an optical component according to claim 1, wherein: 3. The click of an optical component according to claim 1, wherein the click groove and the shock absorbing member have a depth portion having a width in a slide movement direction larger than a width in a slide movement direction on a groove opening side. mechanism.