Adjustable damping device

Abstract

An adjustable damping device comprises a lens cone, a rotating ring is arranged on the outer side of the lens cone, the rotating ring and the lens cone are arranged in a relatively rotating mode, a sliding ring is arranged in the lens cone, and the sliding ring and the lens cone are arranged in a relatively rotating and sliding mode; the upper side and the lower side of the rotating ring are provided with rubber rings, the rubber rings are coated with a lubricant, the lens barrel is provided with a pressing ring through threaded connection, the pressing ring extrudes the rubber rings when being connected to the lens barrel, and smooth friction force is generated between the rotating ring and the rubber rings; a rubber ring is assembled and embedded on the sliding ring, a lubricant is coated on the rubber ring, and the lens cone and the sliding ring extrude the rubber ring, so that smooth friction force is generated between the lens cone and the rubber ring. The utility model belongs to the technical field of illumination and optical imaging lenses, particularly relates to an adjustable damping device, and solves the problems of unsmooth damping adjustment effect and easy focus shifting in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting and optical imaging lenses, and specifically refers to an adjustable damping device. Background Art

[0002] When adjusting the focal length of the lens, it is adjusted by rotating the rotating ring. In order to ensure smooth and stable adjustment, a damping mechanism needs to be set. The existing adjustable damping device achieves damping by applying damping oil, but its damping effect is not good, it cannot achieve a smooth damping effect, and the problem of focus deviation is prone to occur. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an adjustable damping device to solve the problem of uneven damping adjustment effect and easy focus deviation in the prior art.

[0004] The technical solution adopted by the utility model is as follows: The utility model provides an adjustable damping device, comprising: a lens barrel, a rotating ring is arranged on the outer side of the lens barrel, the rotating ring and the lens barrel are arranged to rotate relatively, a sliding ring is arranged inside the lens barrel, the sliding ring and the lens barrel are arranged to rotate and slide relatively;

[0005] The upper and lower sides of the rotating ring are provided with rubber rings, and the rubber rings are coated with lubricant. The lens barrel is provided with a pressure ring through a threaded connection. The pressure ring is connected to the lens barrel to squeeze the rubber ring, and a smooth friction force is generated between the rotating ring and the rubber ring;

[0006] A rubber ring is embedded in the sliding ring, and a lubricant is coated on the rubber ring. The lens barrel and the sliding ring squeeze the rubber ring, so that the lens barrel and the rubber ring generate smooth friction.

[0007] Furthermore, the sliding ring is provided with a stud, the lens barrel is provided with a hollow cam groove, the inner wall of the rotating ring is provided with a vertical sliding groove, and the stud passes through the cam groove and is slidably assembled in the sliding groove.

[0008] When the rotating ring is rotated, the sliding ring and the stud thereon will slide up and down in the sliding groove under the guidance of the cam groove, thereby playing an adjusting role.

[0009] The rotating ring and the rubber rings on its upper and lower sides generate smooth friction, and the rubber rings on the lens barrel and the sliding ring generate smooth friction, thereby achieving a smooth damping effect. At the same time, the damping force can prevent the sliding ring from sliding up and down without being subject to rotational force, thereby causing focus shift.

[0010] The beneficial effects achieved by the utility model using the above structure are as follows: This scheme provides an adjustable damping device, and rubber rings coated with lubricant are arranged between the lens barrel and the rotating ring, and between the lens barrel and the sliding ring, so that smooth friction force can be generated when the rotating ring is rotated, thereby achieving a smooth damping effect. At the same time, the damping force can prevent the sliding ring from sliding up and down without being subjected to rotational force, thereby causing focus deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the overall structure of the utility model;

[0012] Figure 2 Schematic diagram of the structure of the lens barrel.

[0013] Among them, 1. Pressure ring; 2. Rubber ring; 3. Lens barrel; 4. Rotating ring; 5. Sliding ring; 6. Stud.

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0016] like Figure 1-2 The utility model provides an adjustable damping device, comprising: a lens barrel 3, a rotating ring 4 is arranged outside the lens barrel 3, the rotating ring 4 and the lens barrel 3 are arranged to rotate relative to each other, a sliding ring 5 is arranged inside the lens barrel 3, the sliding ring 5 and the lens barrel 3 are arranged to rotate and slide relative to each other;

[0017] The rotating ring 4 is provided with rubber rings 2 on the upper and lower sides, and the rubber rings 2 are coated with lubricant. The lens barrel 3 is provided with a pressure ring 1 through a threaded connection. The pressure ring 1 is connected to the lens barrel 3 to squeeze the rubber ring 2, and a smooth friction force is generated between the rotating ring 4 and the rubber ring 2;

[0018] The sliding ring 5 is equipped with a rubber ring 2 , which is coated with lubricant. The lens barrel 3 and the sliding ring 5 squeeze the rubber ring 2 , so that the lens barrel 3 and the rubber ring 2 generate smooth friction.

[0019] The sliding ring 5 is provided with a stud 6, the lens barrel 3 is provided with a hollow cam groove, the inner wall of the rotating ring 4 is provided with a vertical sliding groove, and the stud 6 passes through the cam groove and is slidably assembled in the sliding groove.

[0020] When the rotating ring 4 is rotated, the sliding ring 5 and the stud 6 thereon will slide up and down in the sliding groove under the guidance of the cam groove, thereby playing an adjusting role.

[0021] The rotating ring 4 and the rubber rings 2 on its upper and lower sides generate smooth friction, and the rubber rings 2 on the lens barrel 3 and the sliding ring 5 generate smooth friction, thereby achieving a smooth damping effect. At the same time, the damping force can prevent the sliding ring 5 from sliding up and down without being subjected to the rotating force, thereby causing focus deviation.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An adjustable damping device, characterized in that: include: A lens barrel (3), wherein a rotating ring (4) is arranged outside the lens barrel (3), and the rotating ring (4) and the lens barrel (3) are arranged to rotate relative to each other; and a sliding ring (5) is arranged inside the lens barrel (3), and the sliding ring (5) and the lens barrel (3) are arranged to rotate and slide relative to each other; The rotating ring (4) is provided with rubber rings (2) on both sides thereof, and a lubricant is applied to the rubber rings (2). The lens barrel (3) is provided with a pressure ring (1) through a threaded connection, and the pressure ring (1) is connected to the lens barrel (3) to squeeze the rubber ring (2); The sliding ring (5) is equipped with a rubber ring (2) embedded therein, the rubber ring (2) is coated with lubricant, and the lens barrel (3) and the sliding ring (5) squeeze the rubber ring (2).

2. An adjustable damping device according to claim 1, characterized in that: The sliding ring (5) is provided with a stud (6), the lens barrel (3) is provided with a hollow cam groove, and the inner wall of the rotating ring (4) is provided with a vertical sliding groove, and the stud (6) passes through the cam groove and is slidably assembled in the sliding groove.

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