Projector head-up angle adjustment driving module

Abstract

The utility model discloses a projector head-up angle adjustment driving module which comprises an installation support, a driving motor, a driving rotating shaft and a gear reduction box, the gear reduction box comprises a reduction box body fixedly installed on the installation support, and a reduction gear set is installed in the reduction box body through a gear shaft. The driving motor is fixedly installed on the reduction gearbox body, and a power output shaft of the driving motor is connected with an input end gear of the reduction gear set. The driving rotating shaft is rotationally mounted on the reduction gearbox body, and an output end gear of the reduction gear set sleeves the driving rotating shaft in a rotation stopping manner; the front end part of the driving rotating shaft is provided with a rotating shaft shoulder part and a screw part positioned on the front end side of the rotating shaft shoulder part; the screw part is sleeved with a projector connecting piece, an elastic piece set and a nut which are sequentially arranged from back to front, the nut is in threaded connection with the screw part, and the projector connecting piece is elastically clamped between the elastic piece set and the shoulder of the rotating shaft. By means of the structural design, the device has the advantages of being novel in structural design, stable in use and good in reliability.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, and in particular to a projector tilt angle adjustment drive module. Background Technology

[0002] Chinese utility model patent with patent number ZL202421495018.9 and patent title: "A Projector with Multi-Angle Adjustment," specifically discloses the following technical solution: A projector with multi-angle adjustment includes a housing. An internal groove is formed inside the housing. A mounting block driven by a lifting mechanism is slidably connected inside the internal groove. A rotating disk driven by a first rotating mechanism is rotatably connected to the top of the mounting block. Two corresponding mounting brackets are fixedly connected to the top of the rotating disk. A rotating column is rotatably connected inside the mounting bracket. The projector body is fixedly connected between the two rotating columns. A second rotating groove is formed inside one of the mounting brackets. A second rotating mechanism is disposed inside the second rotating groove. The second rotating mechanism includes a fourth rotating shaft. The third and fourth rotating shafts are rotatably connected inside the second rotating groove. A worm gear is fixedly connected to the outside of the fourth rotating shaft and inside the second rotating groove. The third rotating shaft is rotatably connected to the inside of the second rotating groove. A worm is fixedly connected to the outside of the third rotating shaft and inside the second rotating groove. The worm and the worm gear mesh with each other. One end of the fourth rotating shaft is fixedly connected to one of the rotating columns. The vertical operating angle of the projector body (i.e., the projector's tilt angle) can be adjusted through the second rotating mechanism. A third servo motor is fixedly installed inside one of the mounting brackets. The output end of the third servo motor is fixedly connected to the third rotating shaft. Through the cooperation of the third servo motor and the third rotating shaft, the normal operation of the second rotating mechanism can be ensured.

[0003] As for the aforementioned drive device for adjusting the projector's tilt angle, during operation, the third servo motor is started to drive the third rotating shaft to rotate, which in turn drives the worm gear to rotate. Through the meshing of the worm gear and the worm wheel, the worm wheel is driven to rotate, which in turn drives the fourth rotating shaft to rotate, which in turn drives one of the rotating columns to rotate, and finally drives the projector body to rotate.

[0004] It should be noted that the aforementioned drive device for adjusting the projector's tilt angle still has the following drawbacks: Specifically, the servo motor drives the rotating column to rotate through the worm gear mechanism, thereby adjusting the projector's tilt angle. When the projector is subjected to an external impact, the impact is transmitted to the servo motor through the rotating column and the worm gear mechanism. Due to the lack of an effective slippage protection structure, this can cause damage to the worm gear, worm, or servo motor, resulting in poor stability and reliability. Utility Model Content

[0005] The purpose of this utility model is to provide a projector head-up angle adjustment drive module to address the shortcomings of the existing technology. This projector head-up angle adjustment drive module has a novel structural design and is stable and reliable in use.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0007] A projector tilt angle adjustment drive module includes a mounting bracket, a drive motor, and a drive shaft arranged horizontally.

[0008] The projector's tilt angle adjustment drive module also includes a gear reducer, which includes a gear reducer housing that is securely mounted on a mounting bracket. Inside the gear reducer housing, a reduction gear set is mounted via a gear shaft. A drive motor is securely mounted on the gear reducer housing, and the drive motor's power output shaft is connected to the input gear of the reduction gear set. A drive shaft is rotatably mounted on the gear reducer housing, and the output gear of the reduction gear set is fitted with a non-rotating sleeve on the drive shaft.

[0009] The front end of the drive shaft extends to the outside of the gearbox housing, and the front end of the drive shaft is provided with a shaft shoulder and a screw part located at the front end of the shaft shoulder; the screw part is fitted with a projector connector, a spring group and a nut arranged sequentially from back to front, and the nut is screwed to the screw part, and the projector connector is elastically locked between the spring group and the shaft shoulder.

[0010] The screw part is flat, and the projector connector has a circular through hole. The projector connector is fitted around the screw part through the circular through hole.

[0011] The spring assembly includes several springs arranged in a sequentially stacked manner. Each spring has a flat hole, and each spring is fitted onto the outer periphery of the screw part through the flat hole to prevent rotation.

[0012] The gearbox housing includes a housing base, a housing cover plate screwed to the housing base, the housing base screwed to the mounting bracket, and the housing of the drive motor screwed to the housing base.

[0013] The gearbox housing has an internal cavity formed by the housing base and housing cover, and the reduction gear set and the drive shaft are located in the internal cavity.

[0014] The reduction gear set further includes a first double gear and a second double gear. The large gear of the first double gear meshes with the input end gear, the small gear of the first double gear meshes with the large gear of the second double gear, and the small gear of the second double gear meshes with the output end gear.

[0015] The drive motor is a stepper motor.

[0016] Compared with existing technologies, this utility model has the following advantages: Specifically, when the projector body is subjected to external impact, the projector connector will rotate relative to the drive shaft, resulting in slippage. The slippage protection structure of this utility model can effectively prevent damage to the reduction gear set and drive motor caused by external impact, thus effectively improving the stability and reliability of use. Therefore, the projector tilt angle adjustment drive module of this utility model has the advantages of novel structural design and good stability and reliability in use. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a partially exploded view of the present invention.

[0020] Figure 3 This is a partial cross-sectional schematic diagram of the present invention.

[0021] Figure 4 This is a partial structural schematic diagram of the present invention.

[0022] exist Figures 1 to 4 This includes:

[0023] 1-Mounting bracket; 2-Drive motor; 3-Drive shaft; 31-Shaft shoulder; 32-Screw section; 4-Gear reducer; 41-Reducer housing; 411-Hoist housing base; 412-Hoist housing cover; 413-Hoist housing inner cavity; 42-Gear shaft; 43-Reduction gear set; 431-Input gear; 432-Output gear; 433-First double gear; 434-Second double gear; 5-Projector connector; 51-Circular through hole; 6-Spring assembly; 61-Spring; 611-Flat hole; 7-Nut. Detailed Implementation

[0024] The present invention will now be described in conjunction with specific embodiments.

[0025] Example 1, as Figures 1 to 4 As shown, a projector tilt angle adjustment drive module includes a mounting bracket 1, a drive motor 2, and a drive shaft 3 arranged horizontally.

[0026] Among them, such as Figures 1 to 3As shown, the projector tilt angle adjustment drive module also includes a gear reducer 4. The gear reducer 4 includes a reducer housing 41 that is fastened to the mounting bracket 1. A reduction gear set 43 is installed inside the reducer housing 41 through a gear shaft 42. The drive motor 2 is fastened to the reducer housing 41 and the power output shaft of the drive motor 2 is connected to the input gear 431 of the reduction gear set 43. The drive shaft 3 is rotatably mounted on the reducer housing 41, and the output gear 432 of the reduction gear set 43 is anti-rotatingly fitted onto the drive shaft 3.

[0027] Furthermore, such as Figures 2 to 4 As shown, the front end of the drive shaft 3 extends to the outside of the gearbox housing 41, and the front end of the drive shaft 3 is provided with a shaft shoulder 31 and a screw part 32 located at the front end of the shaft shoulder 31; the screw part 32 is fitted with a projector connector 5, a spring group 6 and a nut 7 arranged sequentially from back to front, and the nut 7 is screwed to the screw part 32, and the projector connector 5 is elastically locked between the spring group 6 and the shaft shoulder 31.

[0028] It should be explained that the projector connector 5 in this embodiment is connected to the housing part of the projector body; during the installation of the projector body, one side of the housing part of the projector body is connected to the projector connector 5 in this embodiment, and the other side of the housing part of the projector body is pivotally connected to a bracket through a pivot structure. The pivot structure is coaxially arranged with the drive shaft 3 in this embodiment to ensure that the projector body can perform head-up rotation.

[0029] As for the projector connector 5 in this embodiment, it is elastically locked between the shoulder 31 of the drive shaft 3 and the spring sheet group 6. The elastic force applied by the spring sheet group 6 to the projector connector 5 causes the projector connector 5 to be subjected to friction.

[0030] During the process of adjusting the projector's tilt angle using the projector tilt angle adjustment drive module of this embodiment, the drive motor 2 starts and drives the drive shaft 3 to rotate via the reduction gear set 43. During this process, the friction force on the projector connector 5 causes it to rotate synchronously with the drive shaft 3. The projector connector 5 then drives the projector body to rotate synchronously, thereby achieving tilt angle adjustment. In this embodiment, the spring force of the spring set 6 on the projector connector 5 can be adjusted by adjusting the position of the nut 7, thereby adjusting the friction force of the projector connector 5.

[0031] It should be emphasized that when the projector body is subjected to external impact, the projector connector 5 will rotate relative to the drive shaft 3, that is, slippage will occur; the slippage protection structure of this embodiment can effectively prevent the external impact from causing damage to the reduction gear set 43 and the drive motor 2, that is, it can effectively improve the stability and reliability of use.

[0032] In summary, the projector tilt angle adjustment drive module of this embodiment has the advantages of novel structural design and stable and reliable operation through the above structural design.

[0033] Example 2, as Figure 2 As shown, the difference between this embodiment 2 and embodiment 1 is that the screw part 32 is flat and the projector connector 5 has a circular through hole 51.

[0034] The spring piece group 6 includes a number of spring pieces 61 arranged in sequence. Each spring piece 61 has a flat hole 611, and each spring piece 61 is fitted onto the outer periphery of the screw part 32 through the flat hole 611 to prevent rotation.

[0035] It should be explained that the projector connector 5 is fitted around the screw part 32 through the circular through hole 51 to ensure that the projector connector 5 can rotate relative to the drive shaft 3 when slippage protection is applied.

[0036] Furthermore, each spring piece 61 is fitted onto the screw portion 32 of the drive shaft 3 through its flat hole 611 to ensure that each spring piece 61 rotates synchronously with the drive shaft 3; this is to prevent the spring piece 61 from rotating relative to the drive shaft 3 when the projector connector 5 slips.

[0037] Example 3, as Figure 1 and Figure 3 As shown, the difference between this embodiment three and embodiment one is that: the gearbox housing includes a housing base 411, a housing cover plate 412 screwed to the housing base 411, the housing base 411 screwed to the mounting bracket 1, and the housing of the drive motor 2 screwed to the housing base 411.

[0038] The gearbox housing 41 has an internal cavity 413 formed by the housing base 411 and the housing cover 412. The reduction gear set 43 and the drive shaft 3 are located in the internal cavity 413.

[0039] Example 4, as Figure 2 As shown, the difference between this embodiment four and embodiment one is that the reduction gear set 43 further includes a first double gear 433 and a second double gear 434. The large gear of the first double gear 433 meshes with the input end gear 431, the small gear of the first double gear 433 meshes with the large gear of the second double gear 434, and the small gear of the second double gear 434 meshes with the output end gear 432.

[0040] Example 5: The difference between Example 5 and Example 1 is that the drive motor 2 is a stepper motor.

[0041] In this embodiment, the stepper motor drives the rotating shaft 3 to rotate in steps, thereby achieving accurate control of the projector's tilt angle adjustment.

[0042] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A projector tilt angle adjustment drive module, comprising a mounting bracket (1), a drive motor (2), and a drive shaft (3) arranged horizontally. Its features are: The projector tilt angle adjustment drive module also includes a gear reducer (4), which includes a gear reducer housing (41) that is fastened to the mounting bracket (1). Inside the gear reducer housing (41), a reduction gear set (43) is installed via a gear shaft (42). The drive motor (2) is fastened to the gear reducer housing (41), and the power output shaft of the drive motor (2) is connected to the input gear (431) of the reduction gear set (43). The drive shaft (3) is rotatably installed on the gear reducer housing (41), and the output gear (432) of the reduction gear set (43) is anti-rotationally fitted onto the drive shaft (3). The front end of the drive shaft (3) extends to the outside of the gearbox housing (41), and the front end of the drive shaft (3) is provided with a shaft shoulder (31) and a screw part (32) located on the front end side of the shaft shoulder (31); the screw part (32) is fitted with a projector connector (5), a spring group (6) and a nut (7) arranged sequentially from back to front, and the nut (7) is screwed to the screw part (32), and the projector connector (5) is elastically clamped between the spring group (6) and the shaft shoulder (31).

2. The projector tilt angle adjustment drive module according to claim 1, characterized in that: The screw part (32) is flat, and the projector connector (5) has a circular through hole (51). The projector connector (5) is fitted around the screw part (32) through the circular through hole (51). The spring assembly (6) includes a number of springs (61) arranged in sequence. Each spring (61) has a flat hole (611) and each spring (61) is fitted onto the outside of the screw part (32) through the flat hole (611) to prevent rotation.

3. The projector tilt angle adjustment drive module according to claim 1, characterized in that: The gearbox housing includes a housing base (411) and a housing cover plate (412) screwed onto the housing base (411). The housing base (411) is screwed onto the mounting bracket (1), and the housing of the drive motor (2) is screwed onto the housing base (411). The gearbox housing (41) has an internal cavity (413) formed by the housing base (411) and the housing cover (412). The reduction gear set (43) and the drive shaft (3) are located in the internal cavity (413).

4. The projector tilt angle adjustment drive module according to claim 1, characterized in that: The reduction gear set (43) also includes a first double gear (433) and a second double gear (434). The large gear of the first double gear (433) meshes with the input end gear (431), the small gear of the first double gear (433) meshes with the large gear of the second double gear (434), and the small gear of the second double gear (434) meshes with the output end gear (432).

5. The projector tilt angle adjustment drive module according to claim 1, characterized in that: The drive motor (2) is a stepper motor.

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