Electric focusing projection lens

Abstract

The utility model provides an electric focusing projection lens which comprises a projector, the projector is fixedly connected with an electric focusing lens, the front surface of the electric focusing lens is provided with a protection plate, the right side of the projector is fixedly connected with an automatic adjusting mechanism, and the right side of the projector is fixedly connected with the automatic adjusting mechanism. The automatic adjusting mechanism comprises a transmission case, a motor, a transmission block, a transmission column, a transmission gear, a first bevel gear, a second bevel gear, a rotating rod and a connecting block, and the transmission case is fixedly connected to the right side of the projector. Therefore, the convenience and protection performance of the electric focusing lens during use are ensured, the situation that an operator needs to perform manual operation before each time of use is prevented, the stability and durability of the electric focusing lens are improved, the maintenance requirement is reduced, the service life of the electric focusing lens is prolonged, and the overall reliability of the electric focusing lens is improved.

Description

Technical Field

[0001] The utility model relates to an electric focus projection lens, belonging to the technical field of projection lenses. Background Art

[0002] The projection lens is a crucial component of a projector, its primary function being to magnify and accurately project the image from the projector onto a screen or other surface. Below is a detailed explanation of projection lenses: 1. Definition and Classification: A projection lens, also known as a projector lens, is an optical device used to project images. It works based on the principle of a convex lens, focusing light from a light source onto a focal point. The lens' projection mechanism then magnifies and projects the image at that focal point. Projection lenses can be categorized into various types based on different criteria: By focal length: short-throw lenses, medium-throw lenses, and long-throw lenses. Short-throw lenses have a low throw ratio and are suitable for small spaces; medium-throw lenses have a wide market application; long-throw lenses have a high throw ratio and are suitable for large spaces. By zoom capability: fixed-focus lenses and zoom lenses. Fixed-focus lenses have a fixed focal length, and image size can be adjusted by adjusting the projection distance; zoom lenses adjust image size by changing the internal lens position. Special types, such as ultra-short-throw lenses, have very low throw ratios and can be used to project onto large screens attached to walls.

[0003] Authorization announcement number (CN209484502U) discloses an electric focusing device for a projection lamp, which includes a projection lamp housing, a light source focusing system, a LOGO pattern piece, a motor, a bearing, a first fixed plate, a second fixed plate, an imaging tube, an upper sealing plate and a lower sealing plate. The device controls the forward and reverse rotation of the motor through a remote control device to control the forward and reverse rotation of the bearing, so that the imaging tube moves forward and backward, thereby controlling the distance between the imaging tube and the LOGO pattern piece to complete the electric focusing of the projection lamp. Such a design can eliminate the tedious manual focusing at high altitudes at night, not only prevent the sealing of the projection lamp from being damaged and reduce the safety hazards of high-altitude operations, but also solve the technical problem that the projection lamp cannot be quickly adjusted to the best clarity effect, or even cannot be adjusted to the best clarity effect, making the focusing speed faster.

[0004] However, during use, the above-mentioned projection lens may lack measures to protect the projection lens. Since the projection lens is usually directly exposed to the outside world, protection requires the use of a protective shell for clamping. Each use requires manual operation by the operator, which is time-consuming and labor-intensive and does not bring convenience to the user, thereby affecting the overall stability and reliability of the projection lens and increasing maintenance costs.

[0005] Therefore, an electric focus projection lens is proposed. Utility Model Content

[0006] In view of this, the present invention provides an electric focus projection lens to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the utility model is achieved as follows: an electric focus projection lens includes a projector, the projector is fixedly connected to an electric focus lens, a protective plate is provided on the front of the electric focus lens, and an automatic adjustment mechanism is fixedly connected to the right side of the projector, the automatic adjustment mechanism includes a transmission box, a motor, a transmission block, a transmission column, a transmission gear, a first bevel gear, a second bevel gear, a rotating rod and a connecting block, the transmission box is fixedly connected to the right side of the projector, the motor is fixedly connected to the left side of the inner wall of the transmission box, the transmission block is fixedly connected to the output end of the motor, the transmission column is fixedly connected to the left side of the transmission block, the transmission gear is meshed and connected to the surface of the transmission column, the first bevel gear is fixedly connected to the left side of the transmission gear, the second bevel gear is meshed and connected to the front of the first bevel gear, the rotating rod is fixedly connected to the front of the second bevel gear, the connecting block is fixedly connected to the front of the rotating rod, and the left side of the connecting block is fixedly connected to the right side of the protective plate.

[0008] Further preferably, a sealing gasket is fixedly connected to the back surface of the protective plate, and the back surface of the sealing gasket is in contact with the front surface of the electric focus lens.

[0009] Further preferably, a transparent observation plate is fixedly connected to the interior of the protective plate, and the transparent observation plate is used in conjunction with the protective plate.

[0010] Further preferably, a fixing plate is fixedly connected to the back of the motor, and a left side of the fixing plate is fixedly connected to the left side of the inner wall of the transmission box.

[0011] Further preferably, the left side of the first bevel gear is fixedly connected to a support rod, and the left side of the support rod is movably connected to the left side of the inner wall of the transmission box through a bearing.

[0012] Further preferably, a support sleeve is provided on the surface of the rotating rod, and the front side of the support sleeve is movably connected to the front side of the inner wall of the transmission box.

[0013] Further preferably, an opening is provided on the front of the transmission box, the width of the opening is greater than the width of the rotating rod, and the opening is used in conjunction with the rotating rod.

[0014] Further preferably, the right side of the transmission box is provided with an anti-rust coating, and the anti-rust coating is used in conjunction with the transmission box.

[0015] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0016] 1. The utility model provides an automatic adjustment mechanism, in which the protective plate protects the electric focus lens and performs automatic adjustment, thereby ensuring the convenience and protective performance of the electric focus lens during use, preventing the operator from having to perform manual operation before each use, improving the stability and durability of the electric focus lens, reducing maintenance requirements and extending the service life of the electric focus lens, thereby improving the overall reliability of the electric focus lens.

[0017] 2. The utility model can provide auxiliary support to the motor through the setting of the fixed plate to prevent the single-point support of the motor from being unstable and causing large shaking during operation. The setting of the support rod can provide auxiliary support to the first bevel gear, thereby improving the stability of the first bevel gear. The setting of the support sleeve can provide auxiliary support to the rotating rod to prevent the rotating rod from shaking during rotation. The setting of the opening can make the rotating rod rotate stably inside the transmission box to prevent the rotating rod from getting stuck during rotation. The setting of the anti-rust coating can protect the transmission box and increase the service life of the transmission box.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional front view structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the expanded structure of the protective plate of the utility model;

[0022] Figure 3 This is a schematic diagram of the front view structure of the protective plate of the present invention;

[0023] Figure 4 This is a side structural diagram of the transmission box of the present utility model;

[0024] Figure 5 This is a schematic diagram of the explosion structure of the transmission box of the present utility model.

[0025] Figure numerals: 1. projector; 2. electric focus lens; 3. protective plate; 4. automatic adjustment mechanism; 401. transmission box; 402. motor; 403. transmission block; 404. transmission column; 405. transmission gear; 406. first bevel gear; 407. second bevel gear; 408. rotating rod; 409. connecting block; 410. sealing gasket; 411. transparent observation panel; 5. fixing plate; 6. support rod; 7. support sleeve; 8. opening; 9. anti-rust coating. DETAILED DESCRIPTION

[0026] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figure 1-5 As shown, the embodiment of the present invention provides an electric focus projection lens, including a projector 1, a fixed electric focus lens 2 is connected to the projector 1, a protective plate 3 is provided on the front of the electric focus lens 2, and an automatic adjustment mechanism 4 is fixedly connected to the right side of the projector 1. The automatic adjustment mechanism 4 includes a transmission box 401, a motor 402, a transmission block 403, a transmission column 404, a transmission gear 405, a first bevel gear 406, a second bevel gear 407, a rotating rod 408 and a connecting block 409. The transmission box 401 is fixedly connected to the right side of the projector 1, the motor 402 is fixedly connected to the left side of the inner wall of the transmission box 401, the transmission block 403 is fixedly connected to the output end of the motor 402, and the transmission column 404 is fixedly connected to the output end of the motor 402. Fixedly connected to the left side of the transmission block 403, the transmission gear 405 is meshedly connected to the surface of the transmission column 404, the first bevel gear 406 is fixedly connected to the left side of the transmission gear 405, the second bevel gear 407 is meshedly connected to the front of the first bevel gear 406, the rotating rod 408 is fixedly connected to the front of the second bevel gear 407, the connecting block 409 is fixedly connected to the front of the rotating rod 408, the left side of the connecting block 409 is fixedly connected to the right side of the protective plate 3, the back of the protective plate 3 is fixedly connected with a sealing gasket 410, the back of the sealing gasket 410 is in contact with the front of the electric focus lens 2, and the inside of the protective plate 3 is fixedly connected with a transparent observation plate 411, which is used in conjunction with the protective plate 3.

[0030] By setting up the automatic adjustment mechanism 4, the protective plate 3 protects the electric focus lens 2 and automatically adjusts it, thereby ensuring the convenience and protective performance of the electric focus lens 2 when in use, preventing the operator from needing to perform manual operation before each use, improving the stability and durability of the electric focus lens 2, reducing maintenance requirements and extending the service life of the electric focus lens 2, thereby improving the overall reliability of the electric focus lens 2.

[0031] Example 2

[0032] In one embodiment, the left side of the first bevel gear 406 is fixedly connected to a support rod 6, and the left side of the support rod 6 is movably connected to the left side of the inner wall of the transmission box 401 through a bearing. The surface of the rotating rod 408 is provided with a support sleeve 7, and the front of the support sleeve 7 is movably connected to the front side of the inner wall of the transmission box 401. An opening 8 is provided on the front of the transmission box 401, and the width of the opening 8 is greater than the width of the rotating rod 408. The opening 8 is used in conjunction with the rotating rod 408. The right side of the transmission box 401 is provided with an anti-rust coating 9, and the anti-rust coating 9 is used in conjunction with the transmission box 401.

[0033] By setting the fixed plate 5, the motor 402 can be assisted in supporting to prevent the single-point support of the motor 402 from being unstable and causing large shaking during operation. By setting the support rod 6, the first bevel gear 406 can be assisted in supporting to improve the stability of the first bevel gear 406. By setting the support sleeve 7, the rotating rod 408 can be assisted in supporting to prevent the rotating rod 408 from shaking during rotation. By setting the opening 8, the rotating rod 408 can be stably rotated inside the transmission box 401 to prevent the rotating rod 408 from getting stuck during rotation. By setting the anti-rust coating 9, the transmission box 401 can be protected to improve the service life of the transmission box 401.

[0034] When the utility model is working: first, when the user needs to perform protective work, the user starts the motor 402, and the motor 402 drives the transmission block 403 to rotate through the output end, and the transmission block 403 drives the transmission column 404 to slide inside the transmission gear 405, and drives the transmission gear 405 to rotate, and the transmission gear 405 rotates, thereby driving the first bevel gear 406 to rotate, the first bevel gear 406 engages the second bevel gear 407 to drive the second bevel gear 407 to rotate, and the second bevel gear 407 drives the rotating rod 408 to rotate, and the rotating rod 408 drives the connecting block 409 and the protective plate 3 to rotate, and the protective plate 3 is automatically adjusted. When the reverse operation is performed, the protective plate 3 can be adjusted to release the protection of the electric focus lens 2.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. An electric focus projection lens, comprising a projector (1), characterized in that: The projector (1) is fixedly connected to an electric focus lens (2), and a protective plate (3) is provided on the front of the electric focus lens (2). The right side of the projector (1) is fixedly connected to an automatic adjustment mechanism (4), and the automatic adjustment mechanism (4) comprises a transmission box (401), a motor (402), a transmission block (403), a transmission column (404), a transmission gear (405), a first bevel gear (406), a second bevel gear (407), a rotating rod (408) and a connecting block (409). The transmission box (401) is fixedly connected to the right side of the projector (1), and the motor (402) is fixedly connected to the left side of the inner wall of the transmission box (401). The transmission block (403) is fixedly connected to the output end of the motor (402), the transmission column (404) is fixedly connected to the left side of the transmission block (403), the transmission gear (405) is meshedly connected to the surface of the transmission column (404), the first bevel gear (406) is fixedly connected to the left side of the transmission gear (405), the second bevel gear (407) is meshedly connected to the front side of the first bevel gear (406), the rotating rod (408) is fixedly connected to the front side of the second bevel gear (407), the connecting block (409) is fixedly connected to the front side of the rotating rod (408), and the left side of the connecting block (409) is fixedly connected to the right side of the protective plate (3).

2. The electric focus projection lens according to claim 1, wherein: A sealing gasket (410) is fixedly connected to the back of the protective plate (3), and the back of the sealing gasket (410) is in contact with the front of the electric focus lens (2).

3. The electric focus projection lens according to claim 1, wherein: A transparent observation plate (411) is fixedly connected to the interior of the protection plate (3), and the transparent observation plate (411) is used in conjunction with the protection plate (3).

4. The electric focus projection lens according to claim 1, wherein: A fixing plate (5) is fixedly connected to the back of the motor (402), and the left side of the fixing plate (5) is fixedly connected to the left side of the inner wall of the transmission box (401).

5. The electric focus projection lens according to claim 1, wherein: The left side of the first bevel gear (406) is fixedly connected to a support rod (6), and the left side of the support rod (6) is movably connected to the left side of the inner wall of the transmission box (401) through a bearing.

6. The electric focus projection lens according to claim 1, wherein: The surface of the rotating rod (408) is sleeved with a support sleeve (7), and the front surface of the support sleeve (7) is movably connected to the front side of the inner wall of the transmission box (401).

7. The electric focus projection lens according to claim 1, wherein: The front face of the transmission box (401) is provided with an opening (8), the width of the opening (8) is greater than the width of the rotating rod (408), and the opening (8) is used in conjunction with the rotating rod (408).

8. The electric focus projection lens according to claim 1, wherein: The right side of the transmission box (401) is provided with an anti-rust coating (9), and the anti-rust coating (9) is used in conjunction with the transmission box (401).

Images