JPH02146512A - Member holder - Google Patents

Abstract

PURPOSE:To facilitate operation for holding and detaching a member and to simplify the structure by fitting an elastic member onto a holding member which holds the member to be held internally so that part of the member projects inside the holding member and holding the member to be held in the holding member by the elastic member. CONSTITUTION:The elastic member 14 is arranged straddling the holding member 11 from outside, and part of the elastic member 14 is inserted and engaged with the hole part 13 of the holding member 11 elastically to project in the holding member 11. Then the member (lens) 15 to be held which is arranged in the holding member 11 is pressed and held at the part of the elastic member 14 which projects in the holding member 11 from the hole part 13. Further, this operation is performed reversely to easily detach the elastic member 14 from the holding member 11. Consequently, the member holding member is obtained which easily holds the member to be held with the simple constitution, has good assembly performance, and securely presses and holds the member 15 to be held arranged at the holding member 11 by the elastic member 14.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a member holding device that arranges and holds a member such as a lens on a holding member.

[Prior Art] For example, in an optical device such as a camera, a structure shown in FIGS. 14 to 17 is employed to hold a lens in a holding member (lens barrel).

In each of the configurations shown in FIGS. 14 to 17, a step-shaped arrangement portion 2 is provided on the inner circumference of a cylindrical holding member (lens barrel) 1.
The lens 3 inserted into the holding member 1 is placed in the placement part 2 to prevent it from moving in the optical axis direction, and the lens 3 inserted into the holding member 1 is attached to a threaded part 4 formed on the periphery of the open end of the holding member 1. The screw ring 5 is screwed in to hold the lens 3 (Fig. 14), or the piece 6 formed at the periphery of the open end of the holding member 1 is bent inward to hold the lens 3 (Fig. 15). Alternatively, a C ring (a ring made partially open to provide elasticity) 8 is elastically fitted into an annular groove 7 formed on the periphery of the open end of the holding member 1 to hold down the lens 3. 16), or the peripheral edge of the lens 3 is bonded to the peripheral edge of the open end of the holding member 1 with an adhesive 9 (FIG. 17).

[Problems to be Solved by the Invention] However, these structures for holding lenses have the following problems.

That is, in the structure shown in FIG. 14, the structure is complicated because the threaded ring 5 is screwed into the holding member 1, and the assembly work is troublesome. The outer diameter of the holding member 1 becomes larger. In the structure shown in FIG. 15, the work of bending the piece 6 of the holding member 1 is troublesome, the holding of the lens 3 by the bent piece 6 is uncertain, and looseness is likely to occur. There is a problem that the lens 3 is easily damaged when bending, and the lens 3 is easily damaged.
In order to remove the lens 3 held by the lens 3, the piece 6 must be scraped off, which is difficult. The structure shown in Figure 16 is
It is difficult to assemble the elastic C-ring 8 to fit it into the holding member 1, and the C-ring 8 is difficult to assemble during assembly.
There is a risk that the lens 3 may be damaged by contact with the C-ring 8, and furthermore, the C-ring 8 fitted to the holding member 1 is difficult to remove, making it difficult to remove the lens 3. Further, in order to form the annular groove 7, the outer diameter of the holding member 1 becomes large. In the structure shown in FIG. 17, since the adhesive 9 is used, it takes time to assemble the lens 3, and the lens 3 is easily soiled with the adhesive 9, and the adhesive 9 may loosen due to temperature and humidity conditions, causing the lens 3 to become stained.
There is a risk of it coming off.

The present invention has been made based on the above-mentioned circumstances, and provides a member holding device that is easy to hold a member, is easy to remove, is reliable in holding the member, and has a simple structure. The purpose is to

[Means for Solving the Problems] The present invention has taken the following measures to solve these problems and achieve the above objects. That is, an elastic member is fitted onto a holding member that holds a member to be held inside, with a portion of the elastic member protruding inside the holding member, and the elastic member holds the member to be held inside the holding member. We have taken measures to hold and fix this.

[Effect] By taking such measures, the following effects are achieved.

That is, while the elastic member is placed across from the outside of the holding member, a part of the elastic member is inserted into the hole of the holding member by elastic force and protrudes into the inside of the holding member, so that the elastic member is inserted into the holding member. The elastic member protrudes from the hole into the holding member to press and reliably hold the held member disposed inside the holding member. Moreover, by performing this operation in reverse, the elastic member can be easily removed from the holding member.

[Example] Examples of the present invention will be described below.

Each of the embodiments shown in FIGS. 1 to 13 is applied to a case where a lens is placed and held on a holding member.

1 to 4 show one embodiment.

In the figure, reference numeral 11 denotes a cylindrical holding member, one end of which is open for taking in and taking out the lens 15 and transmitting light. An arrangement section 12 for arranging lenses, which forms a stepped section that becomes lower, is formed over the entire circumferential direction. In addition, the holding member 11 has a hole, which is an example of a hole, on the inner peripheral surface of the wall at a portion located a predetermined distance from the arrangement portion 12 toward the open end side, at a target position across the holding member center axis (lens optical axis). A pair of long holes 13, 1B are formed along the circumferential direction. These pair of elongated holes 13, 13 are for inserting and engaging the elastic member 14 that presses the lens 15 arranged in the arrangement part 12, and pass through both the inside and outside of the wall part to allow the elastic member 14 to protrude into the inside of the holding member. Moreover, the elastic member 14 can be engaged with an appropriate length as a long hole extending in the circumferential direction. Therefore, there is a gap between the elongated holes 13 and the arrangement portion 12 that corresponds to the thickness of the lens 15. on the other hand,
The elastic member 14 is made of metal wire, and the holding member 1
1 from the outside, and has an elastic force that acts inward. That is, the elastic member 14 integrates a circular arc portion 14a along the outer circumferential surface of the wall of the holding member 11 and a pair of linear pressing portions 14b, 14b that are inserted into and engaged with the elongated holes 13.1-3 of the holding member 11. The pair of presser portions 14b, 14b exert elastic force toward each other inwardly. Note that the ends of the holding parts 14b, 14b of the elastic member 14 are bent short and at right angles to form the locking parts 14e, 14c, but the ends may be crushed to form the locking parts. It is something.

Lens 1 having a convex shape with the component holding device configured in this way
The effect of holding 5 will be explained. First, lens 15
is inserted into the holding member 11 from the open end thereof and placed in the placement portion 12. In this case, the lens 15 is positioned with its peripheral portion engaging with the stepped portion of the placement portion 12 to prevent the lens 15 from moving toward the inner part of the holding member 11. Then, as shown in FIG. 1, the elastic member 14 is placed outside the holding member 11 so that its holding parts 14b, 14b are along the direction of the elongated holes 13, 13 of the holding member 11, and the holding part 14b.

14b is expanded slightly outward against its elastic force, and the elastic member 14 is assembled so as to straddle the outer peripheral surface of the wall portion corresponding to the arrangement portion 12 of the holding member 11 from the outside. After the combination, the presser parts 14b, 14b are returned to their original state. That is, as shown in FIGS. 2 and 3, the arc portion 14a of the elastic member 14 is applied to the outer peripheral surface of the holding member 11,
The holding parts 14b and 14b are connected to the long holes 13° 13 of the holding member 11.
is inserted into and engaged with from the outside and protrudes into the inside of the holding member 11,
Further, the locking portions 14c, 14c are locked to the outer peripheral surface of the wall portion of the holding member 11 from one end of the elongated hole 13.13. Here, the holding parts 14b and 14b apply elastic force so as to approach each other and engage with the elongated hole 12°12, and this elastic force brings the arcuate part 14a into a state in which it is in contact with the outer circumferential surface of the holding member 11 and when it is engaged. The state in which the stop portions 14c, 14c are locked to the wall portion of the holding member 11 is strengthened. Therefore, the elastic member 14 can be assembled to the holding member 11 with a simple operation, and the elastic member 14 can be reliably attached due to the combination of its shape and the elongated hole of the holding member 11, and external force can be applied to the elastic member 14. This prevents it from coming off unnecessarily.

The holding parts 14b, 14b of the elastic member 14 protrude into the inside of the holding member 11 from the elongated holes 13. The lens 15 is strongly pressed by coming into contact with the opposing sides. That is, as shown in FIG. 4, the lens 15 is held in place by the arrangement portion 12 of the holding member 11 and is pressed down by the wedge action of the elastic member 14 to ensure that the lens 15 is securely held and fixed, thereby preventing play from occurring during use. do not have.

Note that when removing the lens 15 from the holding member 11,
The elastic member 14 may be removed from the holding member by an operation opposite to that described above. Therefore, the task of removing the lens 15 from the holding member 11 can be easily performed.

Thus, the holding device has a simple structure that combines the holding member 11 formed with the long hole 13. Therefore, there is no need to increase the outer diameter of the holding member 11 accordingly.

An example of a suitable device for the holding device of this embodiment is to use it by installing it in the optical path of a camera. In this case, for example, when holding the lens 15 at a location close to the image sensor 16 as shown in FIG. 14b, 14b are positioned so that they do not enter the range of this light receiving section 17. That is, when using this image pickup device 16, a barrel-shaped effective light beam (indicated by a dashed line) is required as shown in FIG. For this reason, the straight pressing portion 14b of the elastic member 14,
The position of the light beam 14b is set so that it does not enter the effective beam of light. If the position of the elastic member 14 is set with the holding parts 14b and 14b facing upright, it is necessary to increase the diameter of the lens 15 in order to release the holding parts from the effective light beam.
be.

Note that, as shown in FIG. 7, when the lens 15 is not a convex lens but a flat lens or a concave lens, the holding part 14b of the elastic member 14 inserted into and engaged with the long hole 13.13 of the holding member 11.
, 14b to exert a wedge action to hold down the lens 15, the cross section of the elongated hole 13.13 is formed into an inclined surface.

Further, the number of elongated holes 13 in the holding member 11 is not limited to one pair, but may be three or more as shown in FIG. 8. That is, three or more elongated holes 13 are formed at intervals on the same circumference of the wall portion of the holding member 11. In this case, since it is difficult to form the holding part 14b of the elastic member 14 in a straight line, it is formed in a bent shape.

Further, the elongated hole 13 formed in the holding member 11 is not limited to a closed hole as shown in FIG. 1, and the locking portions 14c, 14c are formed in an arc shape as shown in FIG. The elastic member 14 can be used. This elastic member 14
is inserted into and engaged with the long holes 13, 13 of the holding member 1'1 from the open side thereof.

Further, the locking part 14c of the elastic member 14 is not limited to being formed by extending the holding part 14b as it is, but a piece made of synthetic resin or the like is attached to the tip of the holding part 14b as shown in FIG. The elastic member 14 shown in FIG. 8 is also provided with these locking portions 14c, 14c. In this manner, it is possible to further eliminate the possibility of damaging the lens or the like by the sharp portion at the end of the elastic member 14 during assembly. Therefore, it goes without saying that the entire elastic member 14 can be made of resin.

Furthermore, in the embodiments described above, the arrangement part 12 provided on the inner peripheral part of the holding member 11 is formed in a step shape, and this step-like arrangement part 12
The lens 15 is held by a combination of the elastic member 14 and the elastic member 14, but the holding structure is not limited to this, and as shown in FIG. Also good. That is, a part of the inner circumferential surface of the holding member 11 is made into the arrangement part 12 having a flat surface, for example, a pair of elongated holes 13 and 13 are formed on both sides of this arrangement part 12, and a lens arranged in the arrangement part 12 is formed. The lens 15 is held by inserting and engaging the elastic members 14, 14 into the long holes 13, 13, 13, 13 on both sides of the arrangement portion 12 and combining the lens 15 with the holding member 11.

The above embodiments have been described for holding a lens in a camera, etc., but in addition to this, the held member may be placed in the placement part of the holding member, and an elastic member may be inserted and engaged into the hole formed in the holding member. By combining them, it can be widely applied to various fields such as holding a member to be held.

For example, FIG. 13 shows a sheet case 22 that houses a magnetic sheet 21. A long hole 23° 23 is formed in the case 22, an elastic member 24 is inserted and engaged, and the sheet case 22 is housed inside the case 22 (placement section) and stacked. This is applied to the case where the uppermost one of the plurality of magnetic sheets 21 arranged is held.

Furthermore, when a filter paper is placed in a funnel in a chemical device or the like, the elastic member can be inserted into and engaged with a long hole formed in the funnel to hold the filter paper.

[Effects of the Invention] As explained above, according to the member holding device of the present invention, the member to be held can be easily held on the holding member with a simple configuration, and the assembly is easy. It is possible to reliably press and hold the held member placed in the area. Also,
The member to be held will not be damaged during holding.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the member holding device of the present invention, FIG. 1 is an exploded perspective view, and FIG. 2 shows a specific example in which the device of the above embodiment is applied to holding a camera lens. FIG. 5 is an exploded view, FIG. 6 is a front sectional view, FIGS. 7 to 13 are views showing different embodiments, and FIGS. 14 to 17 are views showing conventional examples of member holding devices. . DESCRIPTION OF SYMBOLS 11... Holding member, 12... Arrangement part, 13... Long hole, 14... Elastic member, 15... Lens. Applicant's representative Patent attorney Atsushi Tsuboi 1 Figure 112 Figure 3 Figure 4 Figure 11 Figure 13 Figure 14 Figure 15

Claims (4)

[Claims] (1) An elastic member is fitted onto a holding member that holds a member to be held inside, with a part of the elastic member protruding inside the holding member, and the elastic member holds the member to be held inside the holding member. A member holding device characterized by: (2) The member holding device according to claim 1, wherein locking portions are provided at both ends of the elastic member to lock onto the wall portions of the holding member to prevent the elastic member from slipping out from the holding member. (3) The member to be held is an optical member, and the part of the holding member that protrudes inward from the long hole of the holding member is located along the long side direction of the effective screen of the optical member. Component holding device. (4) Holes are formed in the walls on both sides that sandwich the holding member arrangement part, and a pair of elastic members are arranged on both sides of the holding member arrangement part and engage with the respective holes so that the held member The member holding device according to claim 1, wherein the member holding device holds and fixes.