Projector lens telescopic structure

Abstract

The utility model provides a projector lens telescopic structure, belongs to the technical field of projectors, and solves the technical problems of poor flexibility and short service life of a conventional projector lens in a projector for realizing telescopic movement. A projector lens telescopic structure comprises a machine body, keys arranged on the surface of the machine body, heat dissipation grooves formed in the side wall of the machine body and a lens cover installed at the front end of the machine body, the outer wall of the lens cover is fixedly connected with an installation plate, the installation plate is fixedly connected to the inner wall of the machine body, and a connecting cylinder is fixedly installed on the surface of the lens cover. And a fixing frame is fixedly mounted at the other end of the connecting cylinder. According to the utility model, the driving motor drives the second bevel gear to rotate, and under the meshing action of the first bevel gear and the second bevel gear, the upper and lower synchronizing wheels synchronously drive the lens body to stretch out and draw back stably in the connecting cylinder, so that compared with the conventional gear stretching out and drawing back, the stretching out and drawing back adjustment is more convenient and smoother; and the service life is longer.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of projector, and relates to a traction mechanism, in particular to a projector lens telescopic structure. BACKGROUND

[0002] The projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals. It is widely used in homes, offices, schools and entertainment venues. Most of the telescopic structures of the projector lenses on the market control the telescopic movement of the projector lens by adjusting the adjusting gear on the projector shell.

[0003] After searching, a telescopic structure of a projector lens is disclosed in Chinese patent literature

Application Number: CN202222618678.9; Publication Number: CN219085264U

[0004] The telescopic structure of the projector lens disclosed in the patent facilitates the disassembly of the sliding cylinder by cooperating with the inclined block and the limiting block. However, the lens is moved by the adjusting mechanism, which has poor stability and cannot be stably and efficiently telescoped. In addition, a through groove needs to be formed on the surface of the sliding cylinder, which is not conducive to dust protection on the surface of the lens, seriously affecting the service life and working quality of the lens. UTILITY MODEL CONTENTS

[0005] The utility model aims to solve the above-mentioned problems existing in the prior art and provides a telescopic structure of a projector lens. The technical problem to be solved by the utility model is how to realize the precise and flexible telescopic movement of the projector lens inside the projector.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] A telescopic structure of a projector lens includes a body, a key provided on the surface of the body, a heat dissipation groove formed in the side wall of the body, and a lens cover mounted on the front end of the body. The outer wall of the lens cover is fixedly connected with a mounting plate, and the mounting plate is fixedly connected to the inner wall of the body. A connecting cylinder is fixedly installed on the surface of the lens cover, and the other end of the connecting cylinder is fixedly installed with a fixing frame.

[0008] A lens body is telescopically arranged in the connecting cylinder, and the left and right outer walls of the lens body are fixedly connected with connecting blocks. A guide rod is slidably connected in the connecting block, and the two ends of the guide rod are fixedly connected with the fixing frame and the lens cover, respectively.

[0009] The upper and lower outer walls of the lens body are fixedly provided with fixed blocks, and the inside of the fixed blocks is connected with a telescopic driving assembly.

[0010] The above structure makes the telescopic structure installed on the surface of the machine body through the mounting plate, and the other end is installed inside the machine body through the mounting seat, ensuring the stability of the telescopic structure inside the machine body. When the telescopic adjustment is performed, the electric motor is powered on through the setting of the telescopic driving assembly. Under the action of the double shaft of the electric motor, the upper and lower second bevel gears are synchronously rotated. The first bevel gear is driven to rotate through the synchronous wheel through the meshing connection of the second bevel gear and the first bevel gear. The synchronous belt is meshed and connected on the outer wall of the synchronous wheel. Under the action of the fixed block fixedly connected on the outer wall of the synchronous belt, the fixed block drives the lens body to move. The connecting block is fixedly connected on the left and right sides of the lens body, so that the guide rod guides and limits the movement of the lens body, ensuring the stable telescoping of the lens body inside the connecting barrel and improving the telescoping quality and balance of the lens body.

[0011] The bottom end of the fixed frame is fixedly connected with a mounting seat, and the mounting seat is fixedly connected to the inner bottom wall of the machine body.

[0012] The above structure makes the fixed frame stably installed inside the machine body through the setting of the mounting seat, facilitating the efficient installation of the lens telescopic structure inside the machine body, ensuring the position stability of the lens body inside the machine body, and being beneficial to prolonging the service life of the projector.

[0013] The telescopic driving assembly comprises an electric motor fixedly installed on one side of the fixed frame, and a second bevel gear fixedly installed on the output end of the electric motor. The surface of the second bevel gear is meshed and connected with a first bevel gear, and the inside of the first bevel gear is fixedly connected with a rotating rod. The outer wall of the rotating rod is rotatably connected with a fixed plate, and the fixed plate is fixedly connected inside the fixed frame.

[0014] The above structure makes the electric motor synchronously output through the double shaft, so that the electric motor synchronously drives the two second bevel gears to rotate. Through the meshing setting of the first bevel gear and the second bevel gear, the synchronously rotating synchronous belt is driven by the synchronously rotating synchronous wheel arranged above and below, ensuring the synchronism and consistency of the up-down synchronous belt rotation, and the structure is simple and the driving cost is low.

[0015] The outer wall of the rotating rod is fixedly provided with a synchronous wheel, and the outer wall of the synchronous wheel is meshed and connected with a synchronous belt. The bottom outer wall of the synchronous belt is fixedly connected with a fixed block.

[0016] With the above structure, through the meshing connection of the synchronous belt on the outer wall of the synchronous wheel, under the action of the fixed block fixedly connected on the outer wall of the synchronous belt, the synchronous wheel can drive the fixed block and the lens body to move on the inner wall of the connecting barrel, so that the lens body can stably and flexibly stretch and retract in the connecting barrel.

[0017] The inner walls of the two ends of the synchronous belt are meshingly connected with synchronous wheels, and the two synchronous wheels are rotationally connected inside the fixed frame and the lens cover respectively.

[0018] With the above structure, when the synchronous wheel drives the synchronous belt to move, the synchronous belt drives the lens body to stretch and retract in the connecting barrel through the fixed block, so that the lens body can flexibly and efficiently stretch and retract.

[0019] The synchronous belt is arranged in parallel at the upper and lower ends of the connecting barrel, and the synchronous belt is distributed in parallel with the guide rod.

[0020] With the above structure, the parallel arrangement of the synchronous belt and the guide rod makes the moving path of the lens body stable, which is beneficial to improve the balance of the lens body movement and ensure the stretching quality of the lens body.

[0021] Compared with the prior art, the projector lens telescoping structure has the following advantages:

[0022] In the utility model, through the driving motor drives the second bevel gear rotates, under the meshing effect of first bevel gear and second bevel gear, then make up and down synchronous wheel synchronously through synchronous belt drive lens body in the connecting barrel inside the spirit stable telescoping, compared with the prior art gear telescoping, telescoping adjustment is more convenient and smooth, and the service life is longer, simultaneously, through the telescopic drive of synchronous belt to lens body, the flexibility is higher, it is convenient to adjust lens body in a wide range, and under the action of guide rod and lens cover, make the telescopic effect of lens body accurate and flexible, it is favorable to improve the projection quality and the dustproof effect of lens, and the practicality is strong. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the installation structure schematic diagram of a kind of projector lens telescoping structure in the utility model.

[0024] Figure 2 It is the installation section structure schematic diagram of a kind of projector lens telescoping structure in the utility model.

[0025] Figure 3 It is the structure schematic diagram of a kind of projector lens telescoping structure in the utility model.

[0026] Figure 4is a sectional structure schematic view of a projection lens telescopic structure in the utility model;

[0027] Figure 5 is a rear end structure schematic view of a projection lens telescopic structure in the utility model.

[0028] Figure 6 is a structure schematic view of a fixing frame in the utility model.

[0029] In the drawing,

[0030] 1, machine body; 2, button; 3, heat dissipation groove; 4, lens cover; 5, mounting plate; 6, connecting barrel; 7, fixing frame; 8, mounting seat; 9, fixed plate; 10, synchronous wheel; 11, synchronous belt; 12, fixed block; 13, lens body; 14, connecting block; 15, guide rod; 16, rotating rod; 17, first bevel gear; 18, second bevel gear; 19, electric motor. Specific implementation

[0031] The following is a specific embodiment of the utility model and is further described the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0032] Embodiment

[0033] As Figures 1-6 shown;

[0034] A projection lens telescopic structure, including machine body 1, button 2 being arranged in the surface of machine body 1, heat dissipation groove 3 being opened in the lateral wall of machine body 1, lens cover 4 being installed at the front end of machine body 1, mounting plate 5, connecting barrel 6, fixing frame 7, mounting seat 8, fixed plate 9, synchronous wheel 10, synchronous belt 11, fixed block 12, lens body 13, connecting block 14, guide rod 15, rotating rod 16, first bevel gear 17, second bevel gear 18 and electric motor 19, to realize the flexible installation of lens telescopic structure and machine body 1, mounting plate 5 is fixedly connected on the outer wall of lens cover 4, and mounting plate 5 is fixedly connected on the inner wall of machine body 1, and the surface of machine body 1 is provided with through hole that can accommodate lens cover 4 to extend, to ensure the assembly effect of projector, simultaneously, connecting barrel 6 is fixedly installed on the surface of lens cover 4, and the other end of connecting barrel 6 is fixedly installed with fixing frame 7, to facilitate the flexible telescopic movement of lens body 13 in the inside of connecting barrel 6, simultaneously, mounting seat 8 is fixedly connected on the bottom end of fixing frame 7, and mounting seat 8 is fixedly connected on the inner bottom wall of machine body 1, by the setting of mounting seat 8, then make fixing frame 7 to be stably installed in the inside of machine body 1, to facilitate the efficient installation of lens telescopic structure in the inside of machine body 1, to ensure the position stability of lens body 13 in the inside of machine body 1;

[0035] Specifically, the lens body 13 is arranged in the inside of the connecting barrel 6 in a telescopic manner, and in order to ensure the balance effect of the movement of the lens body 13 in the inside of the connecting barrel 6, the connecting blocks 14 are fixedly connected to the left and right outer walls of the lens body 13, the guide rods 15 are slidably connected in the insides of the connecting blocks 14, the lens body 13 is arranged to be telescopic on the outer wall of the guide rod 15 through the connecting blocks 14, and the fixed frames 7 and the lens covers 4 are fixedly connected to the two ends of the guide rods 15 respectively, so as to ensure the stability of the positions of the guide rods 15 and realize the limiting of the movement of the lens body 13.

[0036] In consideration of the driving effect of the movement of the lens body 13 in the inside of the connecting barrel 6, the fixed blocks 12 are fixedly installed on the upper and lower outer walls of the lens body 13, and the telescopic driving assemblies are connected in the insides of the fixed blocks 12, wherein the telescopic driving assemblies comprise the electric motors 19 fixedly installed on one side of the fixed frame 7, the second bevel gears 18 fixedly installed on the output ends of the electric motors 19, and the first bevel gears 17 meshingly connected to the surfaces of the second bevel gears 18. Specifically, the electric motors 19 adopt double-shaft synchronous output, so that the electric motors 19 can drive the two second bevel gears 18 to rotate at the same time. Meanwhile, the rotating rods 16 are fixedly connected in the insides of the first bevel gears 17, the fixed plates 9 are rotatably connected to the outer walls of the rotating rods 16, and the fixed plates 9 are fixedly connected in the inside of the fixed frame 7. Through the meshing arrangement of the first bevel gears 17 and the second bevel gears 18, the upper and lower rotating rods 16 are arranged to rotate synchronously, so as to ensure the rotation synchronism and consistency of the upper and lower rotating rods 16.

[0037] Further, in order to realize the driving of the rotating rods 16 on the lens body 13, the synchronous wheels 10 are fixedly installed on the outer walls of the rotating rods 16, the synchronous belts 11 are meshingly connected to the outer walls of the synchronous wheels 10, the fixed blocks 12 are fixedly connected to the bottom outer walls of the synchronous belts 11, the synchronous wheels 10 are meshingly connected to the inner walls of the two ends of the synchronous belts 11, and the two synchronous wheels 10 are rotatably connected in the insides of the fixed frame 7 and the lens cover 4 respectively. Through such an arrangement, the synchronous wheels 10 are driven to rotate through the rotating rods 16, and under the action of the fixed blocks 12 fixedly connected to the outer walls of the synchronous belts 11, the synchronous wheels 10 can drive the fixed blocks 12 and the lens body 13 to move in the inner wall of the connecting barrel 6 through rotation, so as to facilitate the stable and flexible telescopic movement of the lens body 13 in the inside of the connecting barrel 6. Meanwhile, in consideration of the movement stability of the lens body 13 in the inner wall of the connecting barrel 6, the synchronous belts 11 are arranged in parallel on the upper and lower ends of the connecting barrel 6, and the synchronous belts 11 are arranged in parallel with the guide rods 15, so as to ensure the balance of the movement of the lens body 13 and improve the projection stability.

[0038] The utility model discloses a working principle: when using, install through the mounting plate 5 to the surface of the lens cover 4 on the body 1, and install through the mounting seat 8 in the inside of the body 1, ensure that telescopic structure works stability in the body 1, when telescopic adjustment, through the electric motor 19 electrification, under the double shaft of electric motor 19, then make the synchronous rotation of upper and lower second bevel gear 18, through the meshing connection of second bevel gear 18 and first bevel gear 17, make first bevel gear 17 drive synchronous wheel 10 rotation through the rotating rod 16, through the meshing connection synchronous belt 11 of the outer wall of synchronous wheel 10, under the effect of fixed block 12 fixed connection fixed block 12 on the outer wall of synchronous belt 11, then make fixed block 12 drive lens body 13 to move, and through the fixed connection connecting block 14 on the left and right sides of lens body 13, then make the guiding rod 15 to the movement of lens body 13 guide limit, ensure that lens body 13 in the inside of connecting barrel 6 telescopic, improve the telescopic quality and telescopic balance of lens body 13, and compact structure, drive simple and convenient, like this completed the working principle of the projector lens telescopic structure.

[0039] The specific embodiments described herein are merely illustrative of the present application. Various modifications or changes can be made to the specific embodiments described herein without departing from the spirit of the present application.

Claims

1. A projector lens telescopic structure, comprising a machine body (1), a button (2) arranged on the surface of the machine body (1), a heat dissipation groove (3) opened on the side wall of the machine body (1) and a lens cover (4) installed on the front end of the machine body (1), characterized in that: The outer wall of the lens cover (4) is fixedly connected with a mounting plate (5), and the mounting plate (5) is fixedly connected to the inner wall of the body (1), the surface of the lens cover (4) is fixedly connected with a connecting barrel (6), and the other end of the connecting barrel (6) is fixedly connected with a fixing frame (7); The inside of the connecting barrel (6) is telescopically provided with a lens body (13), and the left and right outer walls of the lens body (13) are fixedly connected with a connecting block (14), the inside of the connecting block (14) is slidably connected with a guide rod (15), and the two ends of the guide rod (15) are fixedly connected with the fixing frame (7) and the lens cover (4) respectively; The upper and lower outer walls of the lens body (13) are fixedly connected with a fixing block (12), and the inside of the fixing block (12) is connected with a telescopic driving assembly.

2. The retractable structure of a projector lens according to claim 1, wherein: The bottom end of the fixing frame (7) is fixedly connected with a mounting seat (8), and the mounting seat (8) is fixedly connected to the inner bottom wall of the body (1).

3. The retractable lens structure of claim 1, wherein: The telescopic driving assembly comprises an electric motor (19) fixedly installed on one side of the fixing frame (7), and the output end of the electric motor (19) is fixedly connected with a second bevel gear (18), the surface of the second bevel gear (18) is meshingly connected with a first bevel gear (17), and the inside of the first bevel gear (17) is fixedly connected with a rotating rod (16), the outer wall of the rotating rod (16) is rotatably connected with a fixed plate (9), and the fixed plate (9) is fixedly connected to the inside of the fixing frame (7).

4. The retractable structure of claim 3, wherein: The outer wall of the rotating rod (16) is fixedly connected with a synchronous wheel (10), the outer wall of the synchronous wheel (10) is meshingly connected with a synchronous belt (11), and the bottom outer wall of the synchronous belt (11) is fixedly connected with a fixing block (12).

5. The retractable structure of claim 4, wherein: The inner walls of the two ends of the synchronous belt (11) are meshingly connected with synchronous wheels (10), and the two synchronous wheels (10) are rotatably connected in the interiors of the fixing frame (7) and the lens cover (4) respectively.

6. The retractable structure of claim 5, wherein: The synchronous belt (11) is arranged in parallel at the upper and lower ends of the connecting barrel (6), and the synchronous belt (11) and the guide rod (15) are distributed in parallel.

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