TWM554574U - Zoom lens preventing from self-loosening by weight - Google Patents

Abstract

The present invention is an anti-weight loose zoom lens comprising an inner ring, an outer ring and a damping member; wherein the inner ring includes an outer circumferential surface and a circumferential groove recessed on the outer circumferential surface of the inner ring, the outer ring a ring sleeve is disposed on the inner ring, the damping member is received in the annular groove and abuts against the inner ring and the outer ring; the present invention is disposed between the inner ring and the outer ring and simultaneously abuts the inner ring and the outer ring The damping member of the outer ring can prevent the inner ring from sliding relative to the outer ring, and solve the problem that the inner and outer rings of the existing zoom lens are relatively slipped when the lens is tilted down or raised, resulting in the movable lens barrel of the lens group. The problem of inaccurate focusing on the sliding of the outer ring and the inner ring is provided, and a zoom lens that prevents the inner and outer rings from loosening each other due to the self-weight of the lens barrel and improves the focusing accuracy is provided.

Description

Anti-weight loose zoom lens

The present invention relates to a device or device for photographing, screening or viewing, in particular to a zoom lens that prevents the inner and outer rings from loosening each other when the weight of the lens barrel is operated, and improves the focus accuracy.

A zoom lens, as shown in Figure 7, includes an inner ring 60, an outer ring 70 and a plurality of lens sets 80; wherein the inner wall of the inner ring 60 is provided with a plurality of inner ring guide grooves 61 extending axially; The outer ring 70 is sleeved on the inner ring 60 and has a plurality of outer ring guide grooves 71 extending in a curved shape on the peripheral wall; each lens group 80 includes a movable lens barrel 81, a plurality of guiding members 82 and a plurality of bolts 83. The movable lens barrel 81 is received in the inner portion of the inner ring 60 and is internally provided with a lens. The plurality of bolts 83 respectively pass through the plurality of guiding members 82 and are screwed and fixed to the movable lens barrel 81. The member 82 can be rotated and simultaneously placed in one of the inner ring guide groove 61 and one of the outer ring guide grooves 71; this type of zoom lens, when the user rotates the outer ring 70, the outer ring guide groove 71 The groove walls push the guide members 82, and the guide members 82 move linearly along the inner ring guide groove 61, thereby moving the movable lens barrel 81 back and forth, focusing or zooming.

However, when the zoom lens of this type is zoomed or zoomed and the lens is raised or tilted down, the weight of the inner ring 60 and the plurality of lens groups 80 is concentrated on one end of the inner ring 60 such that the inner ring 60 is opposite to the outer ring 60. The ring 70 slides against the plurality of lens groups 80, causing the movable lens barrel 81 of each lens group 80 to move relative to the inner ring 60 and the outer ring 70, and causes a problem that the focus cannot be accurately focused; thus, it is known that the existing The zoom lens is still structurally improved and improved.

In order to solve the problem that the inner and outer rings are relatively slipped when the lens is tilted down or raised, and the movable lens barrel of each lens group is pushed to be inaccurate, the present invention proposes an anti-weight looseness. The zoom lens is provided with a damping member that abuts against the inner ring and the outer ring at the same time, which can prevent the inner ring from sliding relative to the outer ring, thereby achieving the purpose of improving the focus state of the lens.

The present invention solves the technical problem of the anti-weight loose zoom lens, comprising: an inner ring; an outer ring sleeved on the outer side of the inner ring; and a damping member disposed on the inner ring and the outer ring Between the rings, and the damping member abuts the inner ring and the outer ring.

The zoom lens for preventing self-heavy weight, wherein the damping member has an arc shape and includes a plurality of connected bending segments, each bending segment including an outer ring abutting against the outer ring And a second inner ring abutting portion of the inner ring.

The zoom lens for preventing self-heavy weight, wherein the damper member is a member made of a metal material.

The zoom lens for preventing self-heavy weight, wherein the damper member is a member of a flannel material.

The anti-weight loose zoom lens, wherein the damper member is a member of a plastic material.

The zoom lens for preventing self-heavy weight, wherein the damper member is a member made of a rubber material.

The anti-loose zoom lens, wherein the inner ring includes an outer circumferential surface and a circumferential groove recessed on the outer circumferential surface of the inner ring, and the damping member is received in the annular groove.

The anti-loose zoom lens, wherein the outer ring includes an inner circumferential surface and an annular groove recessed on an inner circumferential surface of the outer ring, and the damping member is received in the annular groove.

The enhancement of the technical means available in the present invention is that the zoom lens of the present invention is provided with a damping member attached to the inner ring of the inner ring, and a damping member between the inner ring and the outer ring. Relying on the inner ring and the outer ring, it can provide sufficient friction when the lens is raised or tilted down, avoiding the inner ring from sliding relative to the outer ring, and avoiding the movable lens barrel of each lens group being pushed against the outer ring and When the inner ring slides, it can achieve the purpose of improving the focus or focus of the lens.

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 to FIG. 3, the zoom lens for preventing self-heavy weight includes an inner ring 10, an outer ring 20 and a damper member 30.

As shown in FIG. 1 to FIG. 3, the inner ring 10 has a cylindrical shape and includes an outer peripheral surface and a ring groove 11; wherein the annular groove 11 is recessed on the outer peripheral surface of the inner ring 10; For example, the inner ring 10 includes opposite ends, and the annular groove 11 is adjacent to one end of the inner ring 10; the outer ring 20 is cylindrical and sleeved on the inner ring 10, and the outer ring 20 includes an inner ring Weekly. The damper member 30 has an arc shape and is received in the annular groove 11. The damper member 30 includes an inner annular surface, an outer annular surface, a notch 31 and a plurality of bent segments 32 connected thereto. In the preferred embodiment, the annular groove 11 can also be recessed on the inner circumferential surface of the outer ring 20. As shown in FIG. 4, each of the bending segments 32 includes an outer ring abutting portion 321 and two inner ring abutting portions 322. The outer ring abutting portion 321 protrudes in a direction in which the outer ring surface of the damper member 30 faces, and the inner ring abutting portion 322 protrudes obliquely toward a direction in which the inner ring surface of the damper member 30 faces, and two The inner ring abutting portion 322 is respectively located at two sides of the outer ring abutting portion 321; in the preferred embodiment of the present invention, the damper member 30 is made of a metal material, and the damper member 30 can also be used as shown in FIG. It is made of flannel or rubber or plastic.

As shown in FIG. 2, FIG. 5 and FIG. 6, the damper member 30 is received in the annular groove 11 of the inner ring 10 and is interposed between the inner ring 10 and the outer ring 20 when the lens is zoomed or zoomed. At the same time, the damping member 30 that abuts against the inner ring 10 and the outer ring 20 can provide sufficient friction force, and when the lens is raised or tilted down, the inner ring 10 can be prevented from sliding relative to the outer ring 20 and pushed against The movable lens barrel of the lens group causes a situation in which the focus cannot be accurately focused.

10‧‧‧ Inner Ring
11‧‧‧Circle
20‧‧‧Outer Ring
30‧‧‧damper parts
31‧‧‧ gap
32‧‧‧Bend section
321‧‧‧Outer Ring
322‧‧‧ Inner Ring
60‧‧‧ Inner Ring
61‧‧‧ Inner ring guide
70‧‧‧ outer ring
71‧‧‧Outer ring guide
80‧‧‧ lens group
81‧‧‧active tube
82‧‧‧Guide
83‧‧‧ bolt

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 a perspective cross-sectional view of a preferred embodiment of the present invention. Figure 3 is an exploded view of the preferred embodiment of the present invention. Figure 4 is a perspective view showing the appearance of a damper member of the preferred embodiment of the present invention. Figure 5 is a cross-sectional view of a preferred embodiment of the present invention. Fig. 6 is a schematic cross-sectional view showing a damper of the preferred embodiment of the present invention. Fig. 7 is a partial exploded view of a conventional zoom lens.

10‧‧‧ Inner Ring

11‧‧‧Circle

20‧‧‧Outer Ring

30‧‧‧damper parts

Claims (8)

A zoom lens for preventing self-heavy weight, comprising: an inner ring; an outer ring sleeved on an outer portion of the inner ring; and a damping member disposed between the inner ring and the outer ring, and the damping The piece abuts the inner ring and the outer ring. The anti-weight loose zoom lens according to claim 1, wherein the damper member has an arc shape and includes a plurality of connected bent portions, each bent portion including abutting against the outer ring. An outer ring abutting portion and a second inner ring abutting portion abutting the inner ring. The anti-weight loose zoom lens according to claim 2, wherein the damper member is a member made of a metal material. The anti-weight loose zoom lens according to claim 1, wherein the damper member is a member of a flannel material. The anti-weight loose zoom lens according to claim 1, wherein the damper member is a member of a plastic material. The anti-weight loose zoom lens according to claim 1, wherein the damper member is a member made of a rubber material. The anti-weight loose zoom lens according to any one of claims 1 to 6, wherein the inner ring includes an outer circumferential surface and an annular groove recessed on the outer circumferential surface of the inner ring, the damping member is accommodated In the ring groove. The anti-weight loose zoom lens according to any one of claims 1 to 6, wherein the outer ring includes an inner circumferential surface and an annular groove recessed on an inner circumferential surface of the outer ring, the damping member Placed in the ring groove.