A projector hovering support and a projector

Abstract

The utility model relates to the technical field of projection support especially, more particularly to a kind of projector hovering support and projector, its technical scheme main point includes: first frame body;Second frame body, with the first frame body sliding cooperation;Rack, setting in the first frame body;Gear ring, rotation setting in the second frame body, the outer edge of the gear ring has first meshing tooth, the inner edge of the gear ring has multiple second meshing tooth, the first meshing tooth is engaged with the rack;And elastic mechanism, reciprocating activity setting in the second frame body, and located in the gear ring, the elastic mechanism respectively with different second meshing tooth elastic buckling, for adjusting the mutual position of the first frame body and the second frame body, the present application has solved the adjusting accuracy low and the problem of occupying internal space larger that the existing support exists.

Description

Technical Field

[0001] This utility model relates to the technical field of projection brackets, and in particular to a projector suspension bracket and a projector. Background Technology

[0002] As an important image display device, projectors have been widely used in various scenarios such as education, business presentations, home theaters, digital signage, and large entertainment venues. With the continuous advancement of display technology and the increasing demands of users, projectors are facing higher requirements in terms of ease of operation.

[0003] In order to adapt to different projection scenarios, projectors are usually set to be height-adjustable. This requires the use of a telescopic and adjustable stand to complete the adjustment. The stand has an internal height adjustment structure. In existing projector stand technology, the common height adjustment structure adopts a screw-type or snap-on design. By adjusting the extension length of the screw or operating the snap at a specific height, the projector can be suspended at different heights to achieve the height adjustment effect.

[0004] However, screw-type designs typically require complex guide structures, occupying a large amount of structural space, while snap-on designs have limited adjustment positions, only able to hover at a few specific heights, resulting in low adjustment accuracy. Therefore, there is still a lack of a bracket solution that is compact in structure and can achieve high-precision hovering, requiring improvements to existing technologies.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides a projector suspension bracket and a projector to solve the problems of low adjustment accuracy and large internal space occupation in the prior art.

[0007] To achieve the above objectives, in a first aspect, this utility model provides a projector suspension bracket with the following technical solution:

[0008] A projector hovering bracket, comprising:

[0009] First frame;

[0010] The second frame is slidably engaged with the first frame;

[0011] A rack is disposed in the first frame;

[0012] A gear ring is rotatably mounted on the second frame. The outer edge of the gear ring has a first meshing tooth, and the inner edge of the gear ring has a plurality of second meshing teeth. The first meshing tooth meshes with the rack.

[0013] And an elastic mechanism, which is reciprocatingly disposed in the second frame and located within the toothed ring, wherein the elastic mechanism is elastically engaged with different second meshing teeth respectively, for adjusting the relative positions of the first frame and the second frame.

[0014] Preferably, the second frame is provided with a mounting shaft, the gear ring is rotatably mounted on the mounting shaft, and the elastic mechanism is mounted on the mounting shaft.

[0015] Preferably, the mounting shaft includes:

[0016] The shaft has one end connected to the second frame and the other end has a threaded hole. The gear ring has a first mounting hole. The shaft passes through the first mounting hole, and the wall of the first mounting hole slides against the shaft.

[0017] The resilient mechanism has a second mounting hole, the threaded fastener passes through the second mounting hole and is threaded into the threaded hole, and the threaded fastener is used to prevent the toothed ring and the resilient mechanism from becoming loose from each other.

[0018] Preferably, the threaded fastener has a limiting protrusion at the periphery of its head, and the elastic mechanism has a limiting groove that communicates with the second mounting hole. The head of the threaded fastener is located in the limiting groove, and the groove wall of the limiting groove has a limiting recess that engages with the limiting protrusion.

[0019] Preferably, the elastic mechanism includes:

[0020] Mounting base, connected to the mounting shaft;

[0021] The slider is slidably disposed on the mounting base and has a third meshing tooth;

[0022] The spring has its two ends connected to the slider and the mounting base, respectively, to drive the slider closer to the gear ring so that the third meshing tooth engages with the second meshing tooth.

[0023] Preferably, the mounting base is provided with a sliding groove, one end of which is open, the slider slides and engages with the sliding groove, and the third meshing tooth is movably engaged with the second meshing tooth through the opening of the sliding groove; the spring is located inside the sliding groove, and both ends of the spring are respectively connected to the groove wall of the sliding groove and the slider.

[0024] Preferably, the first frame has a receiving cavity, the second frame is located within the receiving cavity, and the first frame and the second frame are located on the same plane.

[0025] Preferably, a clearance opening is provided through one side of the second frame, the rack is disposed inside the first frame, the gear ring and the elastic mechanism are disposed inside the second frame, and the first meshing tooth on the gear ring meshes with the rack through the clearance opening.

[0026] Preferably, the first frame has a receiving groove, and the rack is disposed in the receiving groove.

[0027] Secondly, this utility model provides a projector with the following technical solution:

[0028] A projector including the projector hovering bracket described above.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The projector suspension bracket provided by this utility model features an integrated design of rack and toothed ring with a small overall size. By further incorporating the elastic mechanism within the toothed ring, the structural layout can be optimized to fit the confined space inside the projector bracket, improving the compactness of the design. Furthermore, the toothed ring has multiple adjustment positions. By engaging the elastic mechanism with the second meshing tooth, the toothed ring can be locked at multiple rotation angles to obtain damping force. The meshing relationship between the toothed ring and the rack allows for precise control of the relative displacement between the first and second frames, significantly optimizing and improving the adjustment accuracy.

[0031] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the projector suspension bracket provided in Embodiment 1 of this utility model;

[0034] Figure 2 This is a structural schematic diagram of the projector hovering bracket provided in Embodiment 1 of this utility model from another perspective;

[0035] Figure 3 This is a schematic diagram of the assembly relationship between the elastic mechanism, the mounting shaft, and the gear ring provided in Embodiment 1 of this utility model;

[0036] Figure 4 This is a schematic diagram of the assembly relationship between the elastic mechanism and the threaded fastener provided in Embodiment 1 of this utility model;

[0037] Figure 5 This is a schematic diagram of the structure of the first frame and the second frame provided in Embodiment 1 of this utility model;

[0038] Figure 6 This is a structural schematic diagram of the projector hovering bracket provided in Embodiment 1 of this utility model from another perspective;

[0039] Figure 7 This is a schematic diagram of the structure of the second frame and rack provided in Embodiment 1 of this utility model.

[0040] Figure label:

[0041] 1. First frame; 11. Receiving cavity; 12. Receiving groove;

[0042] 2. Second frame; 21. Clearance opening;

[0043] 3. Gear rack;

[0044] 4. Gear ring; 41. First meshing tooth; 42. Second meshing tooth; 43. First mounting hole;

[0045] 5. Elastic mechanism; 51. Mounting base; 511. Second mounting hole; 512. Limiting groove; 5121. Limiting recess; 513. Slide groove; 52. Slider; 521. Third meshing tooth; 53. Spring;

[0046] 6. Install the shaft;

[0047] 61. Shaft;

[0048] 62. Threaded fasteners; 621. Round head screws; 622. Hex nuts;

[0049] 63. Limiting protrusion. Detailed Implementation

[0050] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0051] In the description of this utility model, it should be understood 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 a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0052] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0053] The following is in conjunction with the appendix Figure 1-7 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0054] Example 1:

[0055] Please refer to Figure 1 , Figure 2 as well as Figure 3 This utility model embodiment provides a projector suspension bracket for adjusting the suspension height of the projector, including a first frame 1, a second frame 2, a rack 3, a gear ring 4, and an elastic mechanism 5.

[0056] The second frame 2 is slidably engaged with the first frame 1. The rack 3 is disposed on the first frame 1, and the gear ring 4 is rotatably disposed on the second frame 2. The outer edge of the gear ring 4 has a first meshing tooth 41, which meshes with the rack 3. During the sliding process between the first frame 1 and the second frame 2, the first frame 1 drives the rack 3 to move, and then pushes the gear ring 4 to rotate through the first meshing tooth 41.

[0057] Meanwhile, the inner edge of the gear ring 4 has multiple second meshing teeth 42. It can be understood that the multiple second meshing teeth 42 are arranged sequentially and spaced along the circumferential direction of the gear ring 4 on the inner edge of the gear ring 4. The specific number of second meshing teeth 42 can be adjusted according to actual needs and is not specifically limited here. In addition, the elastic mechanism 5 is reciprocally arranged in the second frame 2 and located inside the gear ring 4. The elastic mechanism 5 is opposite to the second meshing teeth 42. During the rotation of the gear ring 4, the second meshing teeth 42 rotate synchronously with the gear ring 4, so that different second meshing teeth 42 can pass through the elastic mechanism 5. During this process, the elastic mechanism 5 is elastically engaged with different second meshing teeth 42 respectively, so that the elastic mechanism 5 can apply damping force to the gear ring 4 at multiple different angles. With the mutual cooperation between the elastic mechanism 5 and the second meshing teeth 42, it is used to adjust the relative position of the first frame 1 and the second frame 2.

[0058] By adopting the above technical solution, the integrated design of rack 3 and gear ring 4 has the feature of small overall volume. By further setting the elastic mechanism 5 inside the gear ring 4, the structural layout can be further optimized and the structure can be more compact. Moreover, during the rotation of gear ring 4, since gear ring 4 has multiple second meshing teeth 42, it is equivalent to forming multiple fine gears that can be continuously stopped. The adjustment accuracy between the first frame 1 and the second frame 2 is significantly optimized and improved. It can be understood that, due to having multiple adjustment gears, the stepless adjustment function is further obtained. The problems of insufficient structural compactness and low adjustment accuracy are solved simultaneously.

[0059] Reference Figure 2 and Figure 3 In some embodiments, the second frame 2 is provided with a mounting shaft 6, the gear ring 4 is rotatably mounted on the mounting shaft 6, and the elastic mechanism 5 is mounted on the mounting shaft 6. Specifically, the mounting shaft 6 is integrally connected to the second frame 2 to obtain better connection strength. On this basis, by simultaneously mounting the gear ring 4 and the elastic mechanism 5 on the mounting shaft 6, the gear ring 4 and the elastic mechanism 5 can be integrated together, resulting in a more compact structure and ensuring good concentricity between the two, thus optimizing and improving structural accuracy.

[0060] In other embodiments, the gear ring 4 and the elastic mechanism 5 can also be set separately, for example, by setting two mounting shafts 6 and setting the gear ring 4 and the elastic mechanism 5 separately on the two mounting shafts 6. In this case, the elastic mechanism 5 can also provide damping force to the gear ring 4. It is understood that no matter how the gear ring 4 and the elastic mechanism 5 are set, they should be included in the scope of interpretation of this application. In this embodiment, the gear ring 4 and the elastic mechanism 5 are set on the same mounting shaft 6 as an example.

[0061] Reference Figure 3In some embodiments, the mounting shaft 6 includes a shaft body 61 and a threaded fastener 62. One end of the shaft body 61 is connected to the second frame 2. Typically, the shaft body 61 is integrally connected to the second frame 2. Meanwhile, the other end of the shaft body 61 has a threaded hole that extends along the length of the shaft body 61. The gear ring 4 has a first mounting hole 43 that penetrates both opposite sides of the gear ring 4. When the gear ring 4 is installed, the shaft body 61 penetrates the first mounting hole 43, and the wall of the first mounting hole 43 slides against the shaft body 61. At this time, the gear ring 4 can rotate around the shaft body 61 as the axis of rotation, thus achieving rotational installation.

[0062] It is understood that the gear ring 4 can be rotatably mounted on the second frame 2 directly or indirectly during actual installation. In the above embodiment, the gear ring 4 is indirectly rotatably mounted on the second frame 2 through the mounting shaft 6. In other embodiments, the gear ring 4 can also be directly rotatably mounted on the second frame 2. The specific installation method of the gear ring 4 is not limited here.

[0063] Based on this, the elastic mechanism 5 has a second mounting hole 511, and a threaded fastener 62 passes through the second mounting hole 511 and is threadedly connected to the threaded hole. The threaded fastener 62 is used to prevent the toothed ring 4 and the elastic mechanism 5 from becoming loose from each other.

[0064] Specifically, in some embodiments, the shaft 61 is configured as a stepped shaft. When the gear ring 4 is installed on the shaft 61, the step of the shaft 61 is used to position one side of the gear ring 4. On this basis, the elastic mechanism 5 is located at one end of the shaft 61 away from the second frame 2, and at the same time at the side of the gear ring 4 away from the shaft 61. The elastic mechanism 5 abuts against the gear ring 4, and the gear ring 4 can limit the elastic mechanism 5.

[0065] At this time, the tail of the threaded fastener 62 has an external thread. It can be understood that the head of the threaded fastener 62 can be understood as the part of the threaded fastener 62 excluding the thread. The outer diameter of the head of the threaded fastener 62 is usually larger than the outer diameter of its tail. By passing the threaded fastener 62 through the second mounting hole 511 and threading it into the threaded hole, it is equivalent to fixing the elastic mechanism 5 to the end of the shaft 61.

[0066] Based on the above configuration, on the one hand, the elastic mechanism 5 abuts against the head of the threaded fastener 62, and the head of the threaded fastener 62 restricts the elastic mechanism 5 from loosening. On the other hand, the step of the elastic mechanism 5 and the shaft 61 causes the opposite sides of the gear ring 4 to be abutted and limited, which plays a role in limiting the gear ring 4. Therefore, the threaded fastener 62 can prevent the gear ring 4 and the elastic mechanism 5 from loosening, and the structure is installed stably.

[0067] Furthermore, referring to Figure 4The threaded fastener 62 has a limiting protrusion 63 at the periphery of its head, and the elastic mechanism 5 has a limiting groove 512. The limiting groove 512 is connected to the second mounting hole 511. The head of the threaded fastener 62 is located in the limiting groove 512. The groove wall of the limiting groove 512 has a limiting recess 5121 that engages with the limiting protrusion 63.

[0068] In some embodiments, the threaded fastener 62 can be an integral structure. For example, the threaded fastener 62 can be set as a hexagonal screw, with the head of the hexagonal screw being the head of the threaded fastener 62. The head of the hexagonal screw has a hexagonal profile, and a limiting protrusion 63 is formed at the corner. Correspondingly, the opening shape of the limiting groove 512 is adapted to the head profile of the threaded fastener 62 and is also hexagonal. A limiting recess 5121 is formed at the corner of the limiting groove 512.

[0069] At this time, the head of the hexagonal screw can be placed into the limiting groove 512, so that the head of the threaded fastener 62 is located in the limiting groove 512. The limiting protrusion 63 can be engaged with the limiting recess 5121, thereby limiting the rotation of the elastic mechanism 5, which is beneficial for the elastic mechanism 5 to provide a stable damping force for the gear ring 4.

[0070] In other embodiments, the threaded fastener 62 can be a split structure, in which case the threaded fastener 62 includes a round head screw 621 and a hexagonal nut 622, wherein the hexagonal nut 622 is fitted onto the round head screw 621. In this case, connecting the round head screw 621 to the threaded hole allows the hexagonal nut 622 to be fixed on the mounting shaft 6. The hexagonal nut 622 constitutes the head of the threaded fastener 62. Since the hexagonal nut 622 has hexagonal edges, a limiting protrusion 63 can be formed at its corners. Correspondingly, the opening shape of the limiting groove 512 is adapted to the head contour of the threaded fastener 62 and is also hexagonal. A limiting recess 5121 is formed at the corner of the limiting groove 512.

[0071] At this time, the hexagonal nut 622 can be placed into the limiting groove 512. The limiting protrusion 63 can be engaged with the limiting recess 5121, thereby limiting the rotation of the elastic mechanism 5, which is beneficial for the elastic mechanism 5 to provide a stable damping force for the gear ring 4.

[0072] It is understood that the head of the threaded fastener 62 can also be adjusted to a triangular, quadrangular, or pentagonal profile. No specific restrictions are placed on the head profile of the threaded fastener 62 here. Regardless of the combination or assembly form of the threaded fastener 62, as long as a polygonal profile is set on its head and used to restrict the rotation of the elastic mechanism 5, it should be included in the scope of interpretation of the same means in this solution. In this embodiment, the threaded fastener 62 adopts a split structure as an example.

[0073] Reference Figure 4 To achieve engagement with the second meshing tooth 42, the elastic mechanism 5 includes a mounting base 51, a slider 52, and a spring 53. The mounting base 51 is connected to the mounting shaft 6. Specifically, the second mounting hole 511 is provided through the mounting base 51, and the limiting groove 512 is provided on the mounting base 51. The slider 52 is slidably disposed on the mounting base 51. The slider 52 has a third meshing tooth 521. Typically, the third meshing tooth 521 is integrally connected to the slider 52 to obtain good structural stability. The two ends of the spring 53 are respectively connected to the slider 52 and the mounting base 51. The spring 53 is used to drive the slider 52 closer to the gear ring 4 so that the third meshing tooth 521 and the second meshing tooth 42 are movably engaged.

[0074] Based on the above settings, during the rotation of the gear ring 4, the gear ring 4 is driven by an external force, which pushes the slider 52 to retract. At this time, the spring 53 is compressed synchronously until the gear ring 4 continues to rotate to a certain angle, the first second meshing tooth 42 disengages from the third meshing tooth 521, and then the slider 52 can be reset under the push of the spring 53, and the third meshing tooth 521 engages with the next second meshing tooth 42, until the first frame 1 and the second frame 2 reach the appropriate stopping position. During this process, the first frame 1 and the second frame 2 can be continuously adjusted without interruption, achieving the effect of stepless adjustment.

[0075] Furthermore, continue to refer to Figure 4 The mounting base 51 is provided with a slide groove 513, one end of which is open. The slider 52 slides and engages with the slide groove 513, and the third meshing tooth 521 is movably engaged with the second meshing tooth 42 through the opening of the slide groove 513. The spring 53 is located inside the slide groove 513, and both ends of the spring 53 are connected to the groove wall of the slide groove 513 and the slider 52, respectively.

[0076] Specifically, one end of the slide groove 513 is open at the periphery of the mounting base 51, and the other end is closed. For ease of description, these are referred to as the open end and the closed end of the slide groove 513, respectively. One end of the spring 53 is connected to the groove wall of the closed end of the slide groove 513, and the other end is connected to the side of the slider 52 away from the open end of the slide groove 513. The closed end of the slide groove 513 provides support for the spring 53. Driven by the spring 53, the third meshing tooth 521 extends out through the open end of the slide groove 513 to the periphery of the mounting base 51 and engages with the second meshing tooth 42.

[0077] Optionally, in some embodiments, the slide 513 can be a T-shaped slide 513, and correspondingly, the slider 52 is a T-shaped slider 52. In this case, with the cooperation of the T-shaped slide 513 and the T-shaped slider 52, the slider 52 is not easy to loosen from the slide 513, and the movement is more stable.

[0078] Based on the above configuration, on the one hand, the slide groove 513 provides a stable sliding guide effect for the slider 52, making the slider 52 less likely to loosen and the locking action stable. On the other hand, the slide groove 513 further houses the slider 52 and the spring 53 in the mounting base 51, and the structural compactness is further optimized and improved.

[0079] Furthermore, in some embodiments, to prevent the spring 53 from loosening, limit blocks (not shown in the figure) are respectively provided on the groove wall of the slide 513 and the slider 52. At this time, the two ends of the spring 53 can be sleeved on the two limit blocks. The limit blocks can limit the two ends of the spring 53 to prevent the spring 53 from coming off during the stretching or compression process, and the installation stability of the spring 53 is optimized and improved.

[0080] Reference Figure 5 The first frame 1 has a receiving cavity 11, the second frame 2 is located in the receiving cavity 11, and the first frame 1 and the second frame 2 are located on the same plane.

[0081] Specifically, in some embodiments, the first frame 1 and the second frame 2 are both planar frame structures, which are parallel to each other and have closed-loop frame outlines with their outer edges connected end to end. The interior of the first frame 1 is hollow to form a receiving cavity 11, and the size of the first frame 1 is larger than the size of the second frame 2, so that the second frame 2 can be placed in the receiving cavity 11.

[0082] Furthermore, in some embodiments, a guide structure, such as a guide sleeve, can be provided on the side of the second frame 2. By sliding the side of the first frame 1 onto the guide sleeve, the second frame 2 can be moved on the first frame 1. The second frame 2 is usually used to install the projector, and the first frame 1 is used to fix it on the corresponding carrier, such as a wall, ceiling, or ground, or other machine platform. The installation method of the first frame 1 is not limited here. When the second frame 2 moves on the first frame 1, the position of the projector can be adjusted.

[0083] Based on the above settings, on the one hand, users only need to pull the projector to adjust its position with the cooperation of the first frame 1 and the second frame 2. On the other hand, by setting the second frame 2 inside the accommodating cavity 11, the overall thickness of the bracket can be further reduced, and the structural compactness can be further optimized and improved.

[0084] Furthermore, referring to Figure 6 A clearance opening 21 is provided through one side of the second frame 2. The rack 3 is located inside the first frame 1. The gear ring 4 and the elastic mechanism 5 are located inside the second frame 2. The first meshing tooth 41 on the gear ring 4 meshes with the rack 3 through the clearance opening 21.

[0085] By adopting the above scheme, the rack 3 can be hidden on the first inner side, and the gear ring 4 and the elastic mechanism 5 can be hidden on the second frame 2. The structural layout is further optimized and the structural compactness is further optimized and improved.

[0086] Reference Figure 7 The first frame 1 has a receiving groove 12, and the rack 3 is disposed in the receiving groove 12. Specifically, the receiving groove 12 is recessed on the side of the first frame 1 facing the second frame 2, and the shape of the receiving groove 12 is adapted to the length profile of the rack 3. By fixing the rack 3 in the receiving groove 12, the structural space can be further optimized, and the structural compactness can be further optimized and improved.

[0087] The projector hovering bracket provided in this embodiment has the following beneficial effects:

[0088] 1. The integrated design of rack 3 and elastic mechanism 5 results in a small overall size, which is suitable for the narrow space inside the projector and avoids interference with other hardware.

[0089] 2. The flexible interference mechanism between the elastic mechanism 5 and the gear ring 4 provides uniform damping torque, enabling smooth adjustment and reliable hovering, with a clear damping feel, thus improving the operating experience.

[0090] 3. The elastic stroke of spring 53 alleviates mechanical wear, and the rigid locking of screw and hexagonal nut 622 ensures long-term stable operation of the structure and optimizes and improves its service life.

[0091] Example 2:

[0092] Based on Embodiment 1, features not explained in this embodiment are explained in Embodiment 1 and will not be repeated here. This embodiment provides a projector including the projector suspension bracket provided in Embodiment 1, and also includes a projector body, which is mounted on the second frame 2.

[0093] Based on the above settings, a projector with a compact structure, high adjustment accuracy, and long service life was obtained.

[0094] Therefore, the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A projector suspension bracket, characterized in that, include: First frame (1); The second frame (2) is slidably engaged with the first frame (1); A rack (3) is disposed in the first frame (1); A gear ring (4) is rotatably mounted on the second frame (2). The outer edge of the gear ring (4) has a first meshing tooth (41), and the inner edge of the gear ring (4) has a plurality of second meshing teeth (42). The first meshing tooth (41) meshes with the rack (3). And an elastic mechanism (5) is reciprocatingly disposed in the second frame (2) and located in the toothed ring (4). The elastic mechanism (5) is elastically engaged with different second meshing teeth (42) respectively, and is used to adjust the relative positions of the first frame (1) and the second frame (2).

2. The projector hovering bracket according to claim 1, characterized in that, The second frame (2) is provided with a mounting shaft (6), the gear ring (4) is rotatably mounted on the mounting shaft (6), and the elastic mechanism (5) is mounted on the mounting shaft (6).

3. The projector hovering bracket according to claim 2, characterized in that, The mounting shaft (6) includes: The shaft (61) is connected to the second frame (2) at one end and has a threaded hole at the other end. The gear ring (4) has a first mounting hole (43). The shaft (61) passes through the first mounting hole (43) and the hole wall of the first mounting hole (43) slides against the shaft (61). And a threaded fastener (62), the elastic mechanism (5) having a second mounting hole (511), the threaded fastener (62) passing through the second mounting hole (511) and threadedly connected to the threaded hole, the threaded fastener (62) being used to prevent the toothed ring (4) and the elastic mechanism (5) from becoming loose from each other.

4. The projector hovering bracket according to claim 3, characterized in that, The threaded fastener (62) has a limiting protrusion (63) at the periphery of its head, and the elastic mechanism (5) has a limiting groove (512) that is connected to the second mounting hole (511). The head of the threaded fastener (62) is located in the limiting groove (512), and the groove wall of the limiting groove (512) has a limiting recess (5121) that engages with the limiting protrusion (63).

5. The projector hovering bracket according to claim 2, characterized in that, The elastic mechanism (5) includes: Mounting base (51) is connected to the mounting shaft (6); The slider (52) is slidably disposed on the mounting base (51) and has a third meshing tooth (521); And a spring (53), with its two ends connected to the slider (52) and the mounting base (51) respectively, for driving the slider (52) closer to the gear ring (4) so ​​that the third meshing tooth (521) and the second meshing tooth (42) are engaged.

6. The projector hovering bracket according to claim 5, characterized in that, The mounting base (51) is provided with a sliding groove (513), one end of which is open. The slider (52) slides and engages with the sliding groove (513), and the third meshing tooth (521) is movably engaged with the second meshing tooth (42) through the opening of the sliding groove (513). The spring (53) is located in the sliding groove (513), and both ends of the spring (53) are connected to the groove wall of the sliding groove (513) and the slider (52), respectively.

7. The projector hovering bracket according to claim 1, characterized in that, The first frame (1) has a receiving cavity (11), the second frame (2) is located in the receiving cavity (11), and the first frame (1) and the second frame (2) are located on the same plane.

8. The projector hovering bracket according to claim 7, characterized in that, A clearance opening (21) is provided through one side of the second frame (2). The rack (3) is located inside the first frame (1). The gear ring (4) and the elastic mechanism (5) are located inside the second frame (2). The first meshing tooth (41) on the gear ring (4) meshes with the rack (3) through the clearance opening (21).

9. The projector hovering bracket according to claim 8, characterized in that, The first frame (1) has a receiving groove (12), and the rack (3) is disposed in the receiving groove (12).

10. A projector, characterized in that, Includes a projector hovering bracket as described in any one of claims 1-9.

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