Supporting structure capable of rapidly adjusting position and projector

Abstract

The utility model discloses a supporting structure capable of quickly adjusting position and a projector. The supporting structure comprises a base, supporting legs and a pressing key, the base is provided with a fixing cavity and a sliding hole communicated with the fixing cavity and the outside. Each supporting leg comprises a leg seat and a screw rod, the leg seat is located outside and fixedly connected with the bottom end of the screw rod, and the screw rod is rotatably arranged in the sliding hole and is in sliding fit with the sliding hole; the pressing key is installed in the fixing cavity in a swinging mode, an abutting block is arranged on the pressing key, the abutting block can be driven to be separated from or abut against the screw rod by shifting the pressing key, and a screw hole with a semicircular cross section is formed in the abutting block; when the abutting block is separated from the screw rod, the screw rod can directly enter and exit from the fixing cavity so as to rapidly adjust the extending length of the supporting foot. When the abutting block abuts against the screw rod, the screw hole is sleeved with and screwed with the screw rod, and the foot base is rotated to finely adjust the supporting foot. The projector comprises the machine body and the supporting structure installed on the machine body, so that the approximate elevation angle of the machine body can be adjusted by rapidly adjusting the extension length of the supporting legs, and the accurate elevation angle of the machine body can be adjusted by finely adjusting the supporting legs.

Description

Technical Field

[0001] This utility model belongs to the technical field of projector accessories, and in particular relates to a support structure that can be quickly adjusted and a projector. Background Technology

[0002] A projector is a device that projects images onto a wall or white cloth. Projectors can magnify the image for easier viewing. Conventional projectors do not have the function of adjusting the angle, the projection area is limited, and they cannot be adjusted when the projected image is misaligned.

[0003] To address this issue, the applicant proposed an adjustable support structure and projector in utility model patent application number 202322269846.2. This adjustable support structure mainly consists of a base, legs, and a key. The legs are equipped with guide rods, and the length of the legs can be adjusted by the interaction of the teeth on the guide rods and the latches on the key. This adjustable support structure is installed on the projector body, and the guide rods can extend from or be hidden within the projector body, facilitating both image adjustment and portability.

[0004] However, in actual use, it was found that due to the large tooth pitch between the two pairs of teeth on the guide rod, users could not fine-tune the extension and retraction of the guide rod by using the buckle. In other words, the method of adjusting the length of the support leg by using the buckle and the teeth does not have a fine-tuning function, which is difficult to meet the needs of high-precision projectors. Therefore, it is urgent to design a new support structure and projector to solve this problem. Utility Model Content

[0005] Technical problems to be solved

[0006] This invention provides a support structure and projector that can be quickly adjusted, allowing for rapid adjustment of the extension length of the legs and fine-tuning of the extension and retraction of the legs, making it convenient for users to quickly and accurately adjust the projection angle of the projector.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A quick-adjustable support structure includes a base, legs, and a key. The base has a fixed cavity and a sliding hole connecting the fixed cavity to the outside. Each leg includes a foot base and a screw. The foot base is located outside and fixed to the bottom end of the screw. The screw is rotatably disposed in the sliding hole and slides within the sliding hole. The key is pivotally mounted in the fixed cavity and has a stop block. Moving the key causes the stop block to disengage from or abut against the screw. The stop block has a threaded hole with a semi-circular cross-section. When the stop block disengages from the screw, the screw can directly enter and exit the fixed cavity to quickly adjust the extension length of the leg. When the stop block abuts against the screw, the threaded hole fits and screws the screw. Rotating the foot base allows for fine-tuning of the leg.

[0010] Preferably, it further includes a limiting part, which is mounted on the base and can limit or release the key.

[0011] Preferably, the limiting part includes an elastic element, which is disposed in the fixed cavity and abuts against the key and the side wall of the fixed cavity, and the elastic element deforms and stores energy when the abutment block is disengaged from the screw.

[0012] Preferably, the base has a notch connecting the fixed cavity to the outside, and the key has a lever extending through the notch. The elastic element abuts against the lever and the top wall of the fixed cavity. When the lever abuts against the bottom wall of the notch, the abutment abuts against the screw, and the elastic element does not deform. When the lever moves upward within the notch, the abutment gradually disengages from the screw, and the elastic element deforms and stores energy.

[0013] Preferably, the fixed cavity is provided with a positioning post, and the lever is provided with a movable groove for engaging the positioning post; when the lever abuts against the bottom wall of the notch, the positioning post abuts against one side of the movable groove, and after the lever is moved, the positioning post can abut against the other side of the movable groove; the elastic element is movably sleeved on the positioning post and abuts against the lever and the side wall of the fixed cavity, and the elastic element avoids the opening of the movable groove.

[0014] Preferably, the limiting part further includes a baffle plate, which is movably sleeved on the positioning post and abuts against the lever and covers the opening of the movable groove; the elastic element is movably sleeved on the positioning post and abuts against the baffle plate and the side wall of the fixed cavity.

[0015] Preferably, a lever with an anti-slip strip is fixedly connected to the outer end of the lever.

[0016] Preferably, the support leg further includes a fastening bolt, which is located on the outside and installed on the top of the screw, and the outer diameter of the end of the fastening bolt is larger than the inner diameter of the sliding hole; the outer diameter of the foot is larger than the inner diameter of the sliding hole.

[0017] Preferably, the support leg further includes an iron rod, and the screw is hollow inside, with the iron rod filling and installed inside the screw to improve the strength of the screw.

[0018] A projector includes a body and a supporting structure; a lens is mounted on the front side of the body, and a cavity for housing a display unit is provided inside the body; a mounting port connecting to the cavity is provided at the bottom front side of the body; a base is fixed at the mounting port, such that a pressure key is located outside; a fixed cavity connects the cavity to the outside through a sliding hole, allowing a screw to move in and out of the cavity to extend and retract the support leg; wherein, when the pressure key is turned to disengage the stop block from the screw, moving the support leg along the sliding hole can quickly adjust the elevation angle of the body; when the pressure key is turned to engage the stop block with the screw, rotating the support leg can finely adjust the elevation angle of the body.

[0019] Preferably, the bottom of the machine body is also equipped with multiple foot pads. When the screw is fully inserted into the fixed cavity, the foot is located above the multiple foot pads or on the same horizontal plane as the multiple foot pads. When the screw is removed from the base, the foot is away from the machine body and located below the multiple foot pads to adjust the elevation angle of the machine body.

[0020] Beneficial effects

[0021] This utility model provides a support structure and projector with quick adjustment capability. The support structure mainly consists of a base, legs, and a pressure key, resulting in a compact overall structure, relatively small size, and high portability. The pressure key drives a stop block, allowing the screw hole on the stop block to engage with a sliding screw, facilitating quick adjustment of the leg extension length and fine-tuning of the leg extension / retraction. This improves the user experience and meets high-precision usage requirements, resulting in high usability. The projector includes a main body and a support structure mounted on it. Therefore, the approximate elevation angle of the projector can be adjusted by quickly adjusting the leg extension length, and the precise elevation angle can be adjusted by fine-tuning the legs, meeting the requirements of high-precision projector use. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1A schematic diagram of the overall structure of this utility model is shown. Figure 1 ;

[0024] Figure 2 A schematic diagram of the overall structure of this utility model is shown. Figure 2 ;

[0025] Figure 3 It shows Figure 2 AA section view;

[0026] Figure 4 It shows Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 An exploded view of the overall structure of this utility model is shown;

[0028] Figure 6 This diagram illustrates the usage state of the support structure of this utility model. Figure 1 ;

[0029] Figure 7 It shows Figure 6 A sectional view;

[0030] Figure 8 This diagram illustrates the usage state of the support structure of this utility model. Figure 2 ;

[0031] Figure 9 It shows Figure 8 A sectional view;

[0032] Figure 10 This diagram illustrates the exploded state of the support structure of this utility model. Figure 1 ;

[0033] Figure 11 This diagram illustrates the exploded state of the support structure of this utility model. Figure 2 .

[0034] In the diagram: 1 base, 11 fixed cavity, 110 positioning post, 12 sliding hole, 13 notch, 2 support leg, 21 foot, 22 screw, 23 fastening bolt, 24 iron rod, 3 pressure key, 31 abutment block, 32 screw hole, 33 lever, 330 movable groove, 331 lever block, 332 anti-slip strip, 4 limiting part, 41 elastic element, 42 baffle, 5 body, 50 lens, 51 receiving cavity, 52 mounting port, 53 foot pad. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0036] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application.

[0037] It should also be noted that in the description of this application, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] See appendix Figure 6 -Appendix Figure 11A quick-adjustable support structure includes a base 1, legs 2, and a key 3. The base 1 has a fixed cavity 11 and a sliding hole 12 connecting the fixed cavity 11 to the outside. The legs 2 include a foot seat 21 and a screw 22. The foot seat 21 is located outside and fixed to the bottom end of the screw 22. The screw 22 is rotatably disposed in the sliding hole 12 and slides in cooperation with the sliding hole 12. The key 3 is oscillatingly installed in the fixed cavity 11 and has a stop block 31. Moving the key 3 can drive the stop block 31 to disengage from or abut against the screw 22. The stop block 31 has a screw hole 32 with a semi-circular cross-section. When the stop block 31 abuts against the screw 22, the screw hole 32 sleeves and screws the screw 22.

[0039] Specifically, under normal circumstances, the foot 21 abuts against the base 1, and the stop block 31 abuts against the screw 22, so that the support leg 2 is fixed on the base 1 and in a relatively retracted position. In use, the pressure key 3 is turned to drive the stop block 31 to disengage from the screw 22, and the screw 22 is quickly moved along the guide groove direction, so that the screw 22 moves out of the fixing cavity 11, and the approximate extension length of the support leg 2 can be adjusted. After the length of the support leg 2 is adjusted, the pressure key 3 is used to drive the stop block 31 to abut against the screw 22, so that the screw hole 32 is fitted and screwed onto the screw 22. At this time, rotating the foot 21 can fine-tune the support leg 2, and the precise extension length of the support leg 2 can be adjusted.

[0040] In summary, this support structure mainly consists of a base 1, legs 2, and a pressure key 3. Therefore, the overall structure is compact, relatively small in size, and highly portable. The pressure key 3 drives the stop block 31, so that the screw hole 32 on the stop block 31 and the sliding screw 22 can be used together. This allows users to quickly adjust the extension length of the legs 2 and finely adjust the extension amount of the legs 2, thereby improving the operating experience and meeting the requirements of high-precision use, resulting in high usability.

[0041] It should be noted that in practical applications, this quick-adjustable support structure can be installed individually in electronic devices such as tablets, cameras, and projectors to adjust the elevation angle of the relevant electronic devices. In addition, multiple sets of this quick-adjustable support structure can be set and installed in mechanical equipment to provide support and adjust the height. Due to the variety of application scenarios, not all of them will be listed in this utility model.

[0042] See appendix Figure 6 -Appendix Figure 11 To prevent the key 3 from shaking arbitrarily and causing instability in the connection between the screw hole 32 and the screw 22, a damping can be provided at the connection between the key 3 and the fixed cavity 11, or an additional limiting part 4 can be provided to limit the key 3. This utility model does not impose any restrictions on this. For ease of understanding, this case takes the setting of the limiting part 4 as an example. The limiting part 4 is installed on the base 1 and can limit or release the key 3.

[0043] Specifically, when the limiting part 4 releases the screw 22, the moving key 3 drives the stop block 31 to disengage from the screw 22, allowing the screw 22 to be moved along the sliding hole 12 to quickly adjust the length of the support leg 2. When the stop block 31 abuts against the screw 22 and the screw hole 32 screws the screw 22, the limiting part 4 restricts the key 3 to prevent the stop block 31 from disengaging from the screw 22 and causing the support leg 2 to wobble. At the same time, it also allows the user to rotate the screw 22 normally to fine-tune the length of the support leg 2, improving operational stability.

[0044] See appendix Figure 7 -Appendix Figure 9 The limiting part 4 can be of various types, such as a locking structure (not shown in the figure). For ease of understanding, the limiting part 4 in this embodiment includes an elastic element 41. The elastic element 41 is disposed in the fixed cavity 11 and abuts against the key 3 and the side wall of the fixed cavity 11.

[0045] Specifically, when the stop block 31 abuts against the screw 22, the elastic element 41 is in its initial state to limit the automatic upward movement of the pressure key 3; when the user moves the pressure key 3 to overcome the elastic force, the stop block 31 disengages from the screw 22 and the elastic element 41 deforms and stores energy. At this time, the screw 22 can be moved normally along the slider. After the screw 22 moves to the approximate position, the pressure key 3 is released, the elastic element 41 releases energy and recovers, and drives the stop block 31 to abut against the screw 22 again. At this time, the screw 22 can be rotated to finely adjust the length of the support leg 2.

[0046] See appendix Figure 7 -Appendix Figure 11 The base 1 is provided with a notch 13 that connects the fixed cavity 11 to the outside. The key 3 is provided with a lever 33 that extends through the notch 13. The elastic element 41 abuts against the lever 33 and the top wall of the fixed cavity 11. When the lever 33 abuts against the bottom wall of the notch 13, the abutment block 31 abuts against the screw 22, and the elastic element 41 does not deform. When the lever 33 moves upward in the notch 13, the abutment block 31 gradually disengages from the screw 22, and the elastic element 41 deforms and stores energy.

[0047] Specifically, the design of the lever 33 extending through the notch 13 makes it convenient for users to move the key 3 by lever 33, thus improving the ease of operation; while the fit design between lever 33 and the bottom wall of notch 13 can limit the position of the stop block 31 when it abuts the screw 22, thereby improving the fit accuracy between screw hole 32 and screw 22.

[0048] See appendix Figure 7 -Appendix Figure 11 The fixed cavity 11 is provided with a positioning post 110, and the lever 33 is provided with a movable groove 330 for engaging the positioning post 110. When the lever 33 abuts against the bottom wall of the notch 13, the positioning post 110 abuts against one side of the movable groove 330. After moving the lever 33, the positioning post 110 can abut against the other side of the movable groove 330. The elastic element 41 is movably sleeved on the positioning post 110 and abuts against the lever 33 and the side wall of the fixed cavity 11, and the elastic element 41 avoids the opening of the movable groove 330.

[0049] Specifically, the use of the positioning post 110 in conjunction with the movable groove 330 can limit the range of motion of the key 3 and prevent the block 31 from moving excessively. At the same time, the positioning post 110 can also provide an installation position for the elastic element 41 and prevent the elastic element 41 from shaking randomly in the movable cavity.

[0050] See appendix Figure 7 -Appendix Figure 11 The limiting part 4 also includes a baffle 42, which is movably sleeved on the positioning post 110 and abuts against the lever 33 and covers the opening of the movable groove 330; the elastic member 41 is movably sleeved on the positioning post 110 and abuts against the baffle 42 and the side wall of the fixed cavity 11.

[0051] Specifically, the design of the baffle 42 can block the opening of the movable groove 330, preventing the spring from getting stuck in the movable groove 330 and jamming the key 3 during the movement of the key 3, thereby improving the structural stability.

[0052] See appendix Figure 6 -Appendix Figure 9 A lever 33 is fixed to a lever 331 at one end located on the outside. The lever 331 is provided with an anti-slip strip 332. This design provides a point of force, making it convenient for the user to move the lever 33 to drive the key 3.

[0053] See appendix Figure 7 -Appendix Figure 9 The elastic element 41 can be a rubber sleeve, spring or other component with elasticity and recovery ability. Since there are many types of related components, no limitation is made in comparison in this utility model.

[0054] See appendix Figure 6 -Appendix Figure 11 The support leg 2 also includes a fastening bolt 23, which is located on the outside and installed on the top of the screw 22. The outer diameter of the end of the fastening bolt 23 is larger than the inner diameter of the sliding hole 12; the outer diameter of the foot 21 is larger than the inner diameter of the sliding hole 12.

[0055] Specifically, the outer diameter of the fastening bolt 23 is larger than the inner diameter of the sliding hole 12, which can prevent the top end of the screw 22 from entering the movable cavity when the screw 22 moves down along the sliding hole 12; while the outer diameter of the foot 21 is larger than the inner diameter of the sliding hole 12, which can prevent the bottom end of the screw 22 from entering the movable cavity when the screw 22 moves up along the sliding hole 12. This structural design has the function of limiting the movement range of the screw 22, preventing the screw 22 from detaching from the base 1 and being lost during the movement.

[0056] See appendix Figure 7 -Appendix Figure 9The support leg 2 also includes an iron rod 24. The screw 22 is hollow inside, and the iron rod 24 is filled and installed inside the screw 22. This design can effectively improve the strength of the screw 22, strengthen the load-bearing capacity of this support structure, and prevent the screw 22 from bending, which would lead to a decrease in fine-tuning accuracy.

[0057] See appendix Figure 1 -Appendix Figure 5 and attached Figure 6 -Appendix Figure 9 A projector includes a body 5 and a support structure. A lens 50 is mounted on the front side of the body 5. The body 5 has an internal cavity 51 for housing a display unit (not shown in the figure). The bottom front side of the body 5 has an installation port 52 that connects to the cavity 51. A base 1 is fixed at the installation port 52, with a pressure key 3 located outside. A fixed cavity 11 connects the cavity 51 to the outside through a sliding hole 12, allowing a screw 22 to move in and out of the cavity 51 to extend and retract the support leg 2. When the pressure key 3 is turned to drive the stop block 31 to disengage from the screw 22, the support leg 2 can be moved along the sliding hole 12 to quickly adjust the elevation angle of the body 5. When the pressure key 3 is turned to drive the stop block 31 to abut the screw 22, the support leg 2 can be rotated to finely adjust the elevation angle of the body 5.

[0058] Specifically, under normal circumstances, the foot 21 abuts against the base 1, and the stop block 31 abuts against the screw 22, causing the screw 22 to stop within the fixed cavity 11 and the movable cavity, ensuring that the foot 2 is in a hidden state, thereby reducing the space occupied and improving the portability of the projector. In use, by pressing the key 3 to drive the stop block 31 to disengage from the screw 22, the screw 22 is moved down along the sliding hole 12 to quickly adjust the extension length of the foot 2, thereby adjusting the approximate tilt angle of the body 5. Then, by pressing the key 3 to drive the stop block 31 to abut against the screw 22, the screw 22 is slightly adjusted to fine-tune the length of the foot 2, thus controlling the precise tilt angle of the projector and improving projection accuracy. The entire process is simple to operate and highly usable. Therefore, the body 5 equipped with this support structure allows users to quickly and accurately adjust the projection angle of the projector.

[0059] See appendix Figure 1 -Appendix Figure 5 The bottom of the body 5 is also equipped with multiple feet 53. When the screw 22 is fully inserted into the fixed cavity 11, the foot 21 is located above the multiple feet 53 or on the same horizontal plane as the multiple feet 53, to prevent the support feet 2 from obstructing the body 5, so that the projector can be placed flat. When the screw 22 is moved out of the base 1, the foot 21 is away from the body 5 and located below the multiple feet 53, so as to adjust the tilt angle of the body 5, so that the projection range of the projector can be expanded.

[0060] It should also be noted that, although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application.

Claims

1. A support structure that can be quickly adjusted, characterized in that, include: The base (1) has a fixed cavity (11) and a sliding hole (12) connecting the fixed cavity (11) and the outside. The support leg (2) includes a foot seat (21) and a screw (22). The foot seat (21) is located outside and fixed to the bottom end of the screw (22). The screw (22) is rotatably disposed in the sliding hole (12) and slides in cooperation with the sliding hole (12). A key (3) is oscillatingly installed in the fixed cavity (11), and a stop block (31) is provided on the key (3). Moving the key (3) can drive the stop block (31) to disengage from or abut against the screw (22). The stop block (31) is provided with a screw hole (32) with a semi-circular cross-section. When the stop block (31) disengages from the screw (22), the screw (22) can directly enter and exit the fixed cavity (11) to quickly adjust the extension length of the support leg (2); when the stop block (31) abuts against the screw (22), the screw hole (32) is fitted and screwed onto the screw (22), and the foot seat (21) is rotated to make a fine adjustment to the support leg (2).

2. The support structure with rapid adjustment according to claim 1, characterized in that, It also includes a limiting part (4), which is mounted on the base (1) and can limit or release the key (3).

3. The support structure with rapid adjustment according to claim 2, characterized in that, The limiting part (4) includes an elastic element (41), which is disposed in the fixed cavity (11) and abuts against the key (3) and the side wall of the fixed cavity (11). When the abutment (31) is disengaged from the screw (22), the elastic element (41) deforms and stores energy.

4. The support structure with rapid adjustment according to claim 3, characterized in that, The base (1) is provided with a notch (13) connecting the fixed cavity (11) and the outside. The key (3) is provided with a lever (33) extending through the notch (13). The elastic element (41) abuts against the lever (33) and the top wall of the fixed cavity (11). When the lever (33) abuts against the bottom wall of the notch (13), the abutment (31) abuts against the screw (22), and the elastic element (41) does not deform. When the lever (33) moves upward in the notch (13), the abutment (31) gradually disengages from the screw (22), and the elastic element (41) deforms and stores energy.

5. The support structure with rapid adjustment according to claim 4, characterized in that, The fixed cavity (11) is provided with a positioning post (110), and the lever (33) is provided with a movable groove (330) for fitting the positioning post (110). When the lever (33) abuts against the bottom wall of the notch (13), the positioning post (110) abuts against one side of the movable groove (330). After the lever (33) is moved, the positioning post (110) can abut against the other side of the movable groove (330). The elastic element (41) is movably fitted on the positioning post (110) and abuts against the lever (33) and the side wall of the fixed cavity (11), and the elastic element (41) avoids the opening of the movable groove (330).

6. The support structure with rapid adjustment according to claim 5, characterized in that, The limiting part (4) further includes a baffle (42), which is movably sleeved on the positioning post (110) and abuts against the lever (33) and covers the opening of the movable groove (330); the elastic element (41) is movably sleeved on the positioning post (110) and abuts against the baffle (42) and the side wall of the fixed cavity (11).

7. The support structure with rapid adjustment according to claim 1, characterized in that, The support leg (2) also includes a fastening bolt (23), which is located on the outside and installed on the top of the screw (22), and the outer diameter of the end of the fastening bolt (23) is larger than the inner diameter of the sliding hole (12); the outer diameter of the foot (21) is larger than the inner diameter of the sliding hole (12).

8. The support structure with rapid adjustment according to claim 1, characterized in that, The support leg (2) also includes an iron rod (24). The screw (22) is hollow inside, and the iron rod (24) is filled and installed inside the screw (22) to improve the strength of the screw (22).

9. A projector, characterized in that, The device includes a body (5) and a support structure that can be quickly adjusted according to any one of claims 1-8; a lens (50) is installed on the front side of the body (5), and a receiving cavity (51) for placing a display unit is provided inside the body (5). An installation port (52) for connecting the receiving cavity (51) is provided at the bottom front side of the body (5); the base (1) is fixed at the installation port (52) and the pressure key (3) is located outside; the fixed cavity (11) is connected to the receiving cavity (51) and the outside through the sliding hole (12) so that the screw (22) can enter and exit the receiving cavity (51) to realize the extension and retraction of the support leg (2); When the key (3) is turned to drive the stop block (31) to disengage from the screw (22), the support foot (2) can be moved along the sliding hole (12) to quickly adjust the elevation angle of the machine body (5); when the key (3) is turned to drive the stop block (31) to abut against the screw (22), the support foot (2) can be rotated to finely adjust the elevation angle of the machine body (5).

10. A projector according to claim 9, characterized in that, The bottom of the body (5) is also equipped with multiple foot pads (53). When the screw (22) is fully inserted into the fixed cavity (11), the foot (21) is located above the multiple foot pads (53) or on the same horizontal plane as the multiple foot pads (53). When the screw (22) is moved out of the base (1), the foot (21) is away from the body (5) and located below the multiple foot pads (53) to adjust the elevation angle of the body (5).

Images