CN219122562U

CN219122562U - Lens focusing structure of projector

Info

Publication number: CN219122562U
Application number: CN202223562265.XU
Authority: CN
Inventors: 邓赛斌
Original assignee: Zhongshan Saier Intelligent Technology Co ltd
Current assignee: Zhongshan Saier Intelligent Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-02
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a lens focusing structure of a projector, which comprises a base of the projector and a lens body, wherein the lens body is arranged on the base through the focusing structure; the focusing structure comprises a lens mounting seat, a screw rod, a driving structure, a limiting structure and a control module; the lens body is installed in the lens mount pad upside, and lens mount pad screw thread cup joints on the lead screw, the lead screw rotates and sets up on the base, and by the clockwise or anticlockwise rotation of drive structure drive, the axial uniform velocity translation of lens mount pad along the lead screw under limit structure's restriction. Compared with the prior art, the method has the advantages that: 1. the utility model improves the focusing precision of the projector, solves the problem of abnormal sound and stuck during automatic focusing, and improves the picture quality and uniformity. 2. The utility model discloses difficulty when having avoided the assembly appears the bad phenomenon. 3. The novel unified mounting mode and structure of various size lenses are made into universal parts, so that the cost is reduced and the development period is shortened.

Description

Lens focusing structure of projector

Technical Field

The utility model relates to the technical field of projectors, in particular to a lens focusing structure of a projector.

Background

Now, when the projector focuses on the lens, focusing is generally achieved by rotating a focusing ring b on the lens. The lens structure on the market is generally: as shown in fig. 1, a lens main body d is installed in a lens inner frame c, a lens fixing seat e is fixed at the bottom of the lens inner frame c, thicker threads are formed on the outer wall of the lens inner frame c, corresponding thread grooves are formed on the inner wall of a focusing ring b, a focusing limiting piece a is further arranged on the lens inner frame c, the focusing ring b is matched with the lens inner frame c, the focusing ring b is twisted, and the lens moves forwards and backwards to realize focusing adjustment. But the structure and method focusing either automatically or manually have the following problems:

1. the structure is complex, and the precision is not enough: because the fit clearance between the threads of the inner frame c of the lens and the threads of the focusing ring b is large, the lens has a sagging angle, the peripheral color and definition of the picture are reduced during projection, the lens swings left and right during focusing, the lens cannot do front-back linear motion, and focusing is difficult.

2. When the lens is installed, if other accessories are pressed to the inner frame c of the lens, focusing can occur, clamping and standing are realized, and faults are easy to occur.

3. During automatic focusing, gear driving is needed, so that assembly difficulty, abnormal sound, slipping and blocking phenomena are easy to occur.

4. Different projectors are different in size, the center distance between the gear of the inner frame c of the lens and the gear of the driving motor is fixed, so that different projectors are matched with different gears and lenses, the projectors cannot be used universally, the cost is high, and the development period is long.

Disclosure of Invention

The utility model aims to solve the technical problems of complex structure, insufficient precision, faults when installing a lens, gear driving when automatic focusing is needed, difficult assembly and different matching problems of gears and lenses of different projectors.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the lens focusing structure of the projector comprises a base of the projector and a lens body, wherein the lens body is arranged on the base through the focusing structure;

the focusing structure comprises a lens mounting seat, a screw rod, a driving structure, a limiting structure and a control module;

the lens body is installed in the lens mount pad upside, and lens mount pad screw thread cup joints on the lead screw, the lead screw rotates and sets up on the base, and by the clockwise or anticlockwise rotation of drive structure drive, the axial uniform velocity translation of lens mount pad along the lead screw under limit structure's restriction, and control module is used for controlling drive structure's work.

As an improvement, the driving structure is a motor, the motor is fixedly arranged on the base, and the output shaft is in driving connection with the rear end of the screw rod.

As an improvement, the limiting structure comprises a sliding shaft, the sliding shaft is fixedly arranged on the base, and the lens mounting seat is sleeved on the sliding shaft in a sliding manner.

As an improvement, the control module is an induction positioning plate arranged on the base.

Compared with the prior art, the utility model has the advantages that:

1. the utility model improves the focusing precision of the projector, solves the problem of abnormal sound and stuck during automatic focusing, and improves the picture quality and uniformity.

2. The utility model discloses difficulty when having avoided the assembly appears the bad phenomenon.

3. The novel unified mounting mode and structure of various size lenses are made into universal parts, so that the cost is reduced and the development period is shortened.

Drawings

Fig. 1 is a schematic structural view of a conventional lens focusing structure of the present utility model.

Fig. 2 is a schematic view of the front face of the present utility model.

Fig. 3 is a schematic structural view of the focusing structure of the present utility model.

Fig. 4 is a schematic view of the structure of the back surface of the present utility model.

As shown in the figure: 1. a base; 2. a lens body; 3. a lens mount; 4. a screw rod; 5. a lens housing; 6. a motor; 7. a sliding shaft; 8. and (5) sensing the positioning plate.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the term "include" and any variations thereof are intended to cover a non-exclusive inclusion.

The present utility model will be described in further detail with reference to the accompanying drawings.

The lens focusing structure of the projector comprises a base 1 and a lens body 2 of the projector, wherein the lens body 2 is arranged on the base 1 through the focusing structure;

the focusing structure comprises a lens mounting seat 3, a screw rod 4, a motor 6, a sliding shaft 7 and an induction positioning plate 8;

the lens body 2 is fixedly arranged on the upper side of the lens mounting seat 3 through the lens shell 5, the lens mounting seat 3 is in threaded sleeve joint with the screw rod 4, the screw rod 4 is rotatably arranged on the base 1 and is in driving connection with the motor 6 arranged on the base 1, the motor 6 drives the lens mounting seat 3 to rotate clockwise or anticlockwise, the lens mounting seat 3 is in sliding sleeve joint with the sliding shaft 7, the sliding shaft 7 is fixedly arranged on the base 1, the lens mounting seat 3 translates along the axial direction of the screw rod 4 at a uniform speed under the limit of the sliding shaft 7, and the induction positioning plate 8 is used for controlling the operation of a driving structure.

This novel when the implementation: the motor 6 drives the screw rod 4 to rotate, the lens mounting seat 3 can linearly reciprocate under the drive of the screw rod 4, the lens body 2 above the lens mounting seat 3 moves together, the induction positioning plate 8 gives out an electric signal, and the rotation quantity of the motor 6 is controlled, so that the maximum movement position and the return position of the lens body 2 are limited, and the lens focusing function is realized.

This focusing process, lens body 2 operation is stable, does not have to rock, does not have the sag, and the operation straightness accuracy is stable, and positioning accuracy is high, and the installation is simple, and motor 6 controllability is strong, avoids the peripheral image quality poor that traditional camera lens focusing mode brought, positioning accuracy poor characteristics, has solved the problem that traditional camera lens focusing appears.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. The utility model provides a camera lens focusing structure of projector, includes base (1) and camera lens body (2) of projector, its characterized in that: the lens body (2) is arranged on the base (1) through a focusing structure;

the focusing structure comprises a lens mounting seat (3), a screw rod (4), a driving structure, a limiting structure and a control module;

the lens body (2) is installed on the upper side of the lens installation seat (3), the screw thread of the lens installation seat (3) is sleeved on the screw rod (4), the screw rod (4) is rotationally arranged on the base (1) and is driven to rotate clockwise or anticlockwise by the driving structure, the lens installation seat (3) translates at a constant speed along the axial direction of the screw rod (4) under the limit of the limiting structure, and the control module is used for controlling the driving structure to work.

2. The lens focusing structure of a projector according to claim 1, wherein: the focusing structure further comprises a lens housing (5), and the lens body (2) is mounted and fixed on the lens mounting seat (3) through the lens housing (5).

3. The lens focusing structure of a projector according to claim 1, wherein: the driving structure is a motor (6), the motor (6) is fixedly arranged on the base (1), and the output shaft is in driving connection with the rear end of the screw rod (4).

4. The lens focusing structure of a projector according to claim 1, wherein: the limiting structure comprises a sliding shaft (7), the sliding shaft (7) is fixedly arranged on the base (1), and the lens mounting seat (3) is sleeved on the sliding shaft (7) in a sliding manner.

5. The lens focusing structure of a projector according to claim 1, wherein: the control module is an induction positioning plate (8) arranged on the base (1).