A posture adjusting mechanism of a projector and a projector

Abstract

The utility model provides a kind of posture adjusting mechanism and projector of projector;The posture adjusting mechanism of projector includes chassis, first lifting driver, second lifting driver and rotating motor, the first lifting driver and second lifting driver are spaced apart and support connection the chassis, to drive the chassis lifting action;Arc-shaped rack is fixed on the chassis, the rotating motor is used to be fixed on projector main body, the rotating shaft of the rotating motor is connected with a driving gear, the driving gear is engaged with the arc-shaped rack;The combination of lifting driver and rotating motor is used to realize the posture adjustment of projector main body, compared with the mode of manual operation, more accurate, fast adjustment can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of projectors, specifically to a projector posture adjustment mechanism and a projector. Background Technology

[0002] In practical applications of projectors, the device's orientation (such as vertical and horizontal angles) significantly impacts projection quality. Although projectors have built-in correction systems (such as keystone correction), their correction range is limited, and automatic keystone correction can degrade image quality, resulting in blurred corners. Especially when placed on a desktop, multiple manual adjustments using the various height adjustment screws on the bottom of the projector are required, which is inefficient. Therefore, a more precise and faster adjustment solution needs to be designed. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a projector posture adjustment mechanism and a projector.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: A projector attitude adjustment mechanism includes a chassis, a first lifting driver, a second lifting driver, and a rotary motor. The first and second lifting drivers are spaced apart and supported by the chassis to drive the chassis to lift. An arc-shaped rack is fixed on the chassis. The rotary motor is fixed to the projector body. The rotating shaft of the rotary motor is connected to a drive gear, which meshes with the arc-shaped rack.

[0005] Furthermore, the bottom of the chassis is provided with at least three support pads, namely a first support pad, a second support pad, and a third support pad. The first lifting drive is connected to the chassis and the first support pad, and the second lifting drive is connected to the chassis and the second support pad.

[0006] Furthermore, both the first lifting driver and the second lifting driver are fixedly mounted on the chassis, with the lifting drive shaft of the first lifting driver connected to the first support foot pad, and the lifting drive shaft of the second lifting driver connected to the second support foot pad.

[0007] Furthermore, both the first lifting driver and the second lifting driver are fixedly mounted on the upper surface of the chassis. The chassis has a first clearance hole and a second clearance hole corresponding to the first lifting driver and the second lifting driver, respectively. The lifting drive shaft of the first lifting driver passes through the first clearance hole and is connected to the first support foot pad; the lifting drive shaft of the second lifting driver passes through the second clearance hole and is connected to the second support foot pad.

[0008] Furthermore, the third support foot pad is directly fixed to the bottom of the chassis.

[0009] Furthermore, both the first lifting driver and the second lifting driver are lifting motors.

[0010] A projector includes a projector body and the aforementioned projector attitude adjustment mechanism, wherein the projector body is rotatably mounted on the chassis and the rotary motor is fixed to the projector body.

[0011] Furthermore, the chassis has a connection hole, and the projector body is rotatably mounted in the connection hole of the chassis via a rotating shaft, with the center of the arc-shaped rack coaxial with the connection hole.

[0012] Furthermore, the upper surface of the chassis is provided with an annular protrusion centered on the connection hole, and the bottom of the projector body is provided with a cavity that matches the annular protrusion, with the annular protrusion fitting into the cavity.

[0013] Furthermore, the front end of the projector body is the projection end, and the first lifting driver and the second lifting driver are located on both sides of the rear end of the projector body, respectively.

[0014] The technical solution provided by this utility model has the following beneficial effects: In practical use, the lifting adjustment of the first or second lifting driver can drive one side of the projector body to rise or fall, thereby adjusting the vertical angle or deflection angle; while the rotary motor is fixed on the projector body and meshes with the arc-shaped rack on the chassis, used to adjust the horizontal angle of the projector body; the combination of lifting driver and rotary motor is used to achieve the attitude adjustment of the projector body, which can achieve more precise and faster adjustment compared to manual operation. Attached Figure Description

[0015] Figure 1 The diagram shown is a schematic representation of the bottom structure of the projector in this embodiment. Figure 2 The diagram shown is a structural schematic of the projector's attitude adjustment mechanism in the embodiment. Figure 3 The diagram shown is an exploded view of the attitude adjustment mechanism of the projector in the embodiment. Detailed Implementation

[0016] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0017] In the description of this utility model, terms such as "upper", "lower", "left", "right", "front", and "rear" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] Reference Figures 1 to 3 As shown, this embodiment provides a projector posture adjustment mechanism, including a chassis 10, a first lifting driver 21, a second lifting driver 22, and a rotary motor 23. The first lifting driver 21 and the second lifting driver 22 are spaced apart and support the chassis 10 to drive the chassis 10 to lift. An arc-shaped rack 13 is fixed on the chassis 10. The rotary motor 23 is fixed on the projector body 100. The rotation shaft of the rotary motor 23 is connected to a drive gear 24, and the drive gear 24 meshes with the arc-shaped rack 13.

[0020] Furthermore, in practical applications, this embodiment also provides a projector, including a projector body 100 and the above-mentioned projector posture adjustment mechanism; the projector body 100 is rotatably mounted on the chassis 10, the chassis 10 supports the projector body 100, and the rotary motor 23 is fixed on the projector body 100.

[0021] Preferably, the front end of the projector body 100 is the projection end, and the first lifting driver 21 and the second lifting driver 22 are located on both sides of the front end of the projector body 100 (i.e., the left and right sides of the front end).

[0022] When the horizontal angle is offset, the rotary motor 23 is controlled to work, that is, the rotary motor 23 drives the drive gear 24 to rotate. Since the arc rack 13 is fixed to the chassis 10 and cannot move, the rotary motor 23 and the projector body 100 can only be driven to rotate in the horizontal direction, thereby correcting the angle offset in the horizontal direction. When there is an angular deviation in the vertical direction, such as when the entire projected image is tilted downwards, the first lifting driver 21 and the second lifting driver 22 at the front end can be controlled to lift simultaneously, thereby raising the height of the chassis 10 and the front end of the projector body 100, and thus lifting the projected image upwards. Conversely, when the entire projected image is tilted upwards, the first lifting driver 21 and the second lifting driver 22 at the rear end can be controlled to lower simultaneously, thereby raising the height of the chassis 10 and the front end of the projector body 100, and thus lowering the entire projected image. When one side (such as the left side) is too high, the first lifting driver 21 on the left side can be controlled to work and drive the chassis 10 and the projector body 100 to lower, or the second lifting driver 22 on the right side can be controlled to work and drive the chassis 10 and the projector body 100 to lift, in order to adjust the tilt of the projected image.

[0023] This application uses a combination of lifting actuators (referring to the first lifting actuator 21 and the second lifting actuator 22) and a rotary motor 23 to achieve the posture adjustment of the projector body. Compared with the manual operation, the lifting actuators and rotary motor 23 move more quickly and accurately, thus achieving more precise and faster adjustment.

[0024] Furthermore, the bottom of the chassis 10 is provided with at least three support pads. In this embodiment, there are three support pads: a first support pad 31, a second support pad 32, and a third support pad 33. The first lifting driver 21 connects the chassis 10 and the first support pad 31, the second lifting driver 22 connects the chassis 10 and the second support pad 32, and the third support pad 33 is directly fixed to the bottom of the chassis 10. This achieves ground support for the chassis 10. Of course, in other embodiments, the number of support pads can be more than three, as long as two of them are used to connect to the first lifting driver 21 and the second lifting driver 22.

[0025] Furthermore, both the first lifting drive 21 and the second lifting drive 22 are fixedly mounted on the chassis 10. The lifting drive shaft of the first lifting drive 21 is connected to the first support foot pad 31, and the lifting drive shaft of the second lifting drive 22 is connected to the second support foot pad 32. More specifically, both the first lifting drive 21 and the second lifting drive 22 are fixedly mounted on the upper surface of the chassis 10. In this embodiment, two sets of support columns 15 are fixed on the upper surface of the chassis 10, and the first lifting drive 21 and the second lifting drive 22 are respectively fixed on the two sets of support columns 15. The chassis 10 has a first clearance hole 11 and a second clearance hole 12 corresponding to the first lifting drive 21 and the second lifting drive 22, respectively. The lifting drive shaft of the first lifting drive 21 passes through the first clearance hole 11 and connects to the first support foot pad 31; the lifting drive shaft of the second lifting drive 22 passes through the second clearance hole 12 and connects to the second support foot pad 32. This configuration realizes the lifting drive connection between the lifting drive and the chassis 10; the structure is simple and easy to implement. Of course, other installation methods can also be used in other embodiments. For example, if there is enough space at the bottom of the chassis 10, the first lifting driver 21 and the second lifting driver 22 can be fixed to the bottom of the chassis 10.

[0026] Furthermore, both the first lifting driver 21 and the second lifting driver 22 are lifting motors, which can be purchased directly from the market. Of course, in other embodiments, the first lifting driver 21 and / or the second lifting driver 22 can also be lifting drive devices such as electric push rods.

[0027] Furthermore, the chassis 10 has a connection hole 14, specifically located at the center of the chassis 10; the projector body 100 is rotatably mounted in the connection hole 14 of the chassis 10 via a rotating shaft, thereby realizing the rotatable assembly of the projector body 100; the center of the arc-shaped rack 13 is coaxial with the connection hole 14; thus, when the rotary motor 23 is working, it can drive the projector body 100 to rotate stably horizontally.

[0028] Furthermore, the upper surface of the chassis 10 is provided with an annular protrusion 16 centered on the connecting hole 14, and the bottom of the projector body 100 is provided with a cavity that matches the annular protrusion 16. Specifically, the cavity is a circular cavity, and its outer diameter is slightly larger than that of the annular protrusion 16, so that the annular protrusion 16 can fit well in the cavity to position and limit the projector body 100.

[0029] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A posture adjustment mechanism for a projector, characterized in that: The device includes a chassis, a first lifting driver, a second lifting driver, and a rotary motor. The first and second lifting drivers are spaced apart and supported by the chassis to drive the chassis to lift. An arc-shaped rack is fixed on the chassis. The rotary motor is fixed to the projector body. The rotating shaft of the rotary motor is connected to a drive gear, which meshes with the arc-shaped rack.

2. The attitude adjustment mechanism of the projector according to claim 1, characterized in that: The bottom of the chassis is provided with at least three support pads, namely a first support pad, a second support pad, and a third support pad. The first lifting drive is connected to the chassis and the first support pad, and the second lifting drive is connected to the chassis and the second support pad.

3. The attitude adjustment mechanism of the projector according to claim 2, characterized in that: The first lifting driver and the second lifting driver are both fixedly mounted on the chassis. The lifting drive shaft of the first lifting driver is connected to the first support foot pad, and the lifting drive shaft of the second lifting driver is connected to the second support foot pad.

4. The attitude adjustment mechanism of the projector according to claim 2, characterized in that: The first lifting driver and the second lifting driver are both fixedly mounted on the upper surface of the chassis. The chassis has a first clearance hole and a second clearance hole corresponding to the first lifting driver and the second lifting driver, respectively. The lifting drive shaft of the first lifting driver passes through the first clearance hole and is connected to the first support foot pad; the lifting drive shaft of the second lifting driver passes through the second clearance hole and is connected to the second support foot pad.

5. The attitude adjustment mechanism of the projector according to claim 2, characterized in that: The third support foot pad is directly fixed to the bottom of the chassis.

6. The attitude adjustment mechanism of the projector according to claim 1, characterized in that: Both the first lifting driver and the second lifting driver are lifting motors.

7. A projector, characterized in that: The projector includes a projector body and a posture adjustment mechanism for the projector as described in any one of claims 1 to 6, wherein the projector body is rotatably mounted on the chassis and the rotary motor is fixed to the projector body.

8. The projector according to claim 7, characterized in that: The chassis has a connection hole, and the projector body is rotatably mounted in the connection hole of the chassis via a rotating shaft. The center of the arc-shaped rack is coaxial with the connection hole.

9. The projector according to claim 8, characterized in that: The upper surface of the chassis is provided with an annular protrusion centered on the connection hole, and the bottom of the projector body is provided with a cavity that matches the annular protrusion, with the annular protrusion fitting into the cavity.

10. The projector according to claim 7, characterized in that: The front end of the projector body is the projection end, and the first lifting driver and the second lifting driver are located on both sides of the front end of the projector body, respectively.

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