TWM519247U - Lens barrel structure - Google Patents

Description

Tube structure

The present invention relates to a device or device for photography, projection or viewing, and more particularly to a lens barrel structure that reduces manufacturing time and cost.

With the advancement of the optical zoom structure of the lens, the existing lens widely uses optical zoom to obtain a larger, sharper image; a conventional zoom lens 70 as shown in FIG. 4, which includes an inner cylinder 71 and a lens group 72. The outer cylinder 73 and the guiding assembly 74; wherein the inner cylinder 71 has opposite ends and is provided with an inner cylinder guiding groove 711 extending to both ends of the inner cylinder 71, and the lens group 72 is installed inside the inner cylinder 71, The sleeve 73 is placed on the inner cylinder 71 and is provided with an outer cylinder guide groove 731. The outer cylinder guide groove 731 is curved and obliquely disposed, and the guiding assembly 74 is radially fixedly coupled to the lens group 72 and simultaneously placed in the inner cylinder. The guiding groove 711 and the outer tube guiding groove 731; when the outer tube 73 is rotated, the guiding member 74 can be pushed by the side wall of the outer tube guiding groove 731, and the guiding assembly 74 is moved along the inner tube guiding groove 711 of the inner tube 71, This adjusts the position of the lens group 72 and thereby controls the focal length of the zoom lens 70.

However, the outer cylinder 73 of the conventional zoom lens 70 is formed by fixing the entire material to the machine tool to form the outer cylinder guide groove 731 provided in the outer cylinder 73 in a processing manner, which not only consumes a large amount of time and materials during processing, but also The control of yield is also relatively difficult, so it has the problem of high production cost and is not conducive to mass production.

In order to solve the problems of processing time, high cost and difficulty in controlling the yield caused by the processing of the entire material of the existing zoom lens, the present invention proposes a lens barrel structure including the use of stamping to form an outer tube guide. After the groove, the cover member which is bent and spheronized and the support member which is formed by injection molding can be quickly and mass-produced to achieve the purpose of reducing cost and increasing productivity.

The present invention solves the technical problem of the lens barrel structure, comprising: a covering member comprising a peripheral wall, a gap and at least two outer tube guiding grooves, the peripheral wall having a hollow cylindrical shape and having a relative One end and a second end, the gap extending through the peripheral wall and extending from the first end of the peripheral wall to the second end of the peripheral wall, the at least two outer tube guide grooves are disposed obliquely and through the peripheral wall; and a support member The through hole is fixed to the inside of the covering member and includes a ring wall and at least two openings. The ring wall has a hollow cylindrical shape. The at least two openings penetrate the ring wall, and the at least two openings are located. The positions of the guide grooves of the at least two outer cylinders are respectively opposite.

The lens barrel structure, wherein the at least two outer tube guiding grooves are respectively located in the range of the at least two openings.

The lens barrel structure, wherein the covering member comprises a plurality of locking holes, the plurality of locking holes penetrating the peripheral wall and distributed on both sides of the gap; the supporting member corresponds to a plurality of locks The hole is provided with a plurality of screw holes; the cover member is locked to the plurality of screw holes of the support member by a plurality of bolts respectively passing through the plurality of lock holes.

The lens barrel structure, wherein the number of at least two outer tube guide grooves is set to three, and the outer tube guide grooves are equally angularly arranged; the number of the openings corresponds to three outer tube guide grooves. The number is set to three.

The lens barrel structure, wherein the support member is an integral member that is injection molded.

The lens barrel structure, wherein the outer tube guide groove is formed by stamping.

The enhancements obtained by the technical means of the creation are as follows: 1. The cover of the lens barrel structure of the present invention is formed by stamping to form an outer cylinder guide groove, and then bent and spheronized, and the existing lens barrel. Compared with the structure, this creation can save the time and materials consumed by the processing, so it has the advantages of high productivity and low production cost. 2. The support of the present invention is simple in structure and manufactured by injection molding, so that it can be produced in a large amount and quickly, and the production efficiency is further improved.

In order to understand the technical features and practical functions of the present work in detail, and in accordance with the creative content, the following further describes the preferred embodiment as shown in the following figure:

As shown in FIG. 1 and FIG. 2, the lens barrel structure of the present invention includes a covering member 10 and a supporting member 20; the supporting member 20 is affixed and fixed to the inside of the covering member 10.

As shown in FIG. 1 and FIG. 2, the covering member 10 includes a peripheral wall 11, a gap 12, a plurality of locking holes 13 and at least two outer tubular guiding grooves 14; wherein the peripheral wall 11 has a hollow cylindrical shape. And having a first end and a second end; the gap 12 extends through the peripheral wall 11 and extends from the first end of the peripheral wall 11 to the second end of the peripheral wall 11; as shown in FIG. The peripheral wall 11 of the 10 is formed by punching three outer guide grooves 14 by a plate member P, and then rounding to form a hollow cylindrical shape. The gap 12 is when the plate member P is bent, and both ends of the plate member P are bent. Forming a plurality of keyholes 13 extending through the peripheral wall 11 and distributed on both sides of the gap 12; the at least two outer cylinder guide grooves 14 are disposed obliquely and through the peripheral wall 11; The plurality of locking holes 13 are divided into two rows and are respectively disposed on two sides of the gap 12. The number of the at least two outer tubular guiding grooves 14 is set to three, and the outer cylindrical guiding grooves 14 are equally spaced. The number of the at least two outer cylinder guide grooves 14 may be set to two or four as the case may be, and the present invention does not specifically limit the number of the at least two outer cylinder guide grooves 14.

As shown in FIG. 1 and FIG. 2, the support member 20 includes a ring wall 21, a plurality of screw holes 22 and at least two openings 23; wherein the ring wall 21 has a hollow cylindrical shape; the plurality of screw holes 22 The position is set to correspond to the position of the plurality of locking holes 13 of the covering member 10, and the screw holes 22 penetrate the ring wall 21 and are provided with threads for screwing on the inner peripheral surface; the number of the at least two openings 23 The at least two openings 23 are disposed through the ring wall 21; in the preferred embodiment of the present invention, the support member 20 is integrally molded by injection molding. member.

As shown in FIG. 1 and FIG. 2, when assembling the cover member 10 and the support member 20 of the present invention, the support member 20 is first placed on the cover member 10, and then the outer cover of the cover member 10 is removed. The guiding groove 14 is respectively aligned with the three opening 23 of the supporting member 20, and then a plurality of bolts are respectively passed through the plurality of locking holes 13 of the covering member 10 to be locked to the plurality of screw holes of the supporting member 20. 22, the support member 20 is placed through the interior of the covering member 10, and three outer tubular guiding grooves 14 are respectively located within the range of the opening 23.

The lens barrel structure of the present invention is formed by press forming, and the outer tube guide groove 14 of the covering member 10 is stamped on the plate member P, and then the plate member P is bent and rounded to form a cylindrical shape. The cover member 10, and the support member 20 of the present invention has a simple structure and is injection molded. The support member 20 is affixed and fixed to the inside of the cover member 10 to support the cover member 10 and provide the present. The necessary intensity is created; this creation saves the time taken for the outer cylinder of the existing zoom lens to be processed, so it can be produced in large quantities and quickly, and has an advantage in productivity.

10‧‧‧Cover parts
11‧‧‧The wall
12‧‧‧ gap
13‧‧‧Keyhole
14‧‧‧Outer tube guide groove
20‧‧‧Support
21‧‧‧Circle
22‧‧‧ screw holes
23‧‧‧Opening
70‧‧‧ zoom lens
71‧‧‧Inner tube
711‧‧‧Inner tube guide groove
72‧‧‧ lens group
73‧‧‧Outer tube
731‧‧‧Outer tube guide groove
74‧‧‧Guide components

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view showing the appearance of a preferred embodiment of the present invention. Figure 2 is an exploded view of the preferred embodiment of the present invention. Figure 3 is a schematic exploded view of the cover member of the preferred embodiment of the present invention. Figure 4 is a partially exploded view of a prior art lens barrel.

10‧‧‧Cover parts

11‧‧‧The wall

12‧‧‧ gap

13‧‧‧Keyhole

14‧‧‧Outer tube guide groove

20‧‧‧Support

21‧‧‧Circle

22‧‧‧ screw holes

23‧‧‧Opening

Claims (7)

A lens barrel structure comprising: a covering member comprising a peripheral wall, a gap and at least two outer tube guiding grooves, the peripheral wall having a hollow cylindrical shape and having opposite first and second ends a gap extending through the peripheral wall and extending from a first end of the peripheral wall to a second end of the peripheral wall, the at least two outer tubular guide grooves are disposed obliquely and through the peripheral wall; and a support member that is affixed and fixed to the peripheral wall The inside of the covering member includes a ring wall and at least two openings, the ring wall has a hollow cylindrical shape, and the at least two openings penetrate the ring wall, and the at least two openings are respectively located at the position of the at least two outer tubes The position of the guide groove is relatively positive. The lens barrel structure of claim 1, wherein the at least two outer tube guide grooves are respectively located within the range of the at least two openings. The lens barrel structure of claim 2, wherein the covering member comprises a plurality of locking holes, the plurality of locking holes extending through the peripheral wall and distributed on both sides of the gap; A plurality of screw holes are provided at a plurality of positions of the locking holes; the covering member is fixed to the plurality of screw holes of the supporting member by a plurality of bolts respectively passing through the plurality of locking holes. The lens barrel structure according to claim 3, wherein the number of the at least two outer tube guide grooves is set to three, and the outer tube guide grooves are equiangularly spaced; the number of the openings corresponds to three The number of the groove guide grooves is set to three. The lens barrel structure according to any one of claims 1 to 4, wherein the support member is an integrally molded member that is injection molded. The lens barrel structure according to any one of claims 1 to 4, wherein the outer tube guide groove is formed by stamping. The lens barrel structure of claim 6, wherein the support member is an integrally molded member that is injection molded.