Rotating structure and projection device

Abstract

This application relates to the field of projection equipment technology, and discloses a rotating structure and a projection device. The rotating structure provided in this application includes a housing with a sliding groove; a base with a limiting groove recessed on one side, into which at least a portion of the housing is placed; a sliding block slidably disposed within the housing, passing through the sliding groove, and engaging with the base; and a first connecting member disposed within the base, fixedly connected to the sliding block to prevent the sliding block from detaching from the base. This rotating structure, with its sliding block and first connecting member, not only facilitates preventing the housing from detaching from the limiting groove, but also provides resistance to the rotation of the housing by ensuring a tight contact between the sliding block and the housing. This allows the housing to remain stably at a predetermined projection angle for an extended period after pitch adjustment, solving the problem of projection devices being unable to maintain a stable predetermined projection angle for a long time.

Description

Technical Field

[0001] This application belongs to the field of projection equipment technology, and particularly relates to rotating structures and projection equipment. Background Technology

[0002] Projection equipment is a display device that projects images and video signals onto a flat surface such as a wall or screen, enlarging a small image into a large one. It is widely used in scenarios such as home movie viewing, office meetings, teaching, cinemas, and outdoor exhibitions.

[0003] In related technologies, a projection device includes a body and a support, which are rotatably connected via a damping hinge. By changing the relative angle between the body and the support, the projection angle of the body can be changed. However, supporting the body with a support makes it difficult for the projection device to maintain a stable projection angle for a long time, affecting its normal use.

[0004] Therefore, improvements to existing technologies are necessary.

[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. Summary of the Invention

[0006] This application provides a rotating structure and a projection device to solve the problem that the projection device is difficult to maintain a predetermined projection angle stably for a long time.

[0007] In a first aspect, embodiments of this application provide a rotating structure, including: The housing has a sliding groove. A base, wherein a limiting groove is recessed on one side of the base, and at least a portion of the housing is placed in the limiting groove; A sliding block is slidably disposed within the housing, passes through the sliding groove, and is plugged into the base; A first connector is disposed within the base and is fixedly connected to the sliding block to prevent the sliding block from detaching from the base.

[0008] In one possible implementation, the sliding block includes a damping part and a first connecting part, the first connecting part being disposed on one side of the damping part, the damping part abutting against the housing, the first connecting part passing through the sliding groove, and the first connecting part being inserted into the base.

[0009] In one possible implementation, the rotating structure further includes a second connector and an elastic member, the sliding block further includes a second connecting portion that extends through the base, the second connector is connected to one end of the second connecting portion that extends through the base, and the elastic member is connected to the second connector and the base.

[0010] In one possible implementation, the rotating structure further includes a rolling element, and the sliding block has a receiving groove on the side near the housing. The rolling element is received in the receiving groove and abuts against the groove wall and the housing.

[0011] In one possible implementation, the bottom of the limiting groove is detachably connected to a slide rail, which abuts against the housing.

[0012] In one possible implementation, a plug is provided on the side of the slide rail near the base, and the base has an interference fit hole for the plug.

[0013] In one possible implementation, the housing has a heat dissipation groove, and the slide rail is provided with a first slider and a second slider on the side near the housing. The first slider abuts against the side wall of the housing, and the second slider extends into the heat dissipation groove.

[0014] In one possible implementation, the rotating structure further includes a magnetic attractor, a reinforcing member is provided on the housing, the reinforcing member is made of ferromagnetic material, a receiving cavity is provided in the base, a fixing member is provided on the cavity wall of the receiving cavity, a fixing groove is provided on the fixing member, and the magnetic attractor is housed in the fixing groove to attract the reinforcing member.

[0015] In one possible implementation, the sliding block has a first wiring hole, and the base has a second wiring hole, with the opening of the first wiring hole facing the opening of the second wiring hole.

[0016] Secondly, embodiments of this application also provide a projection device, the projection device including the rotating structure as described in any of the preceding claims.

[0017] Compared with the prior art, this application has the following beneficial effects: The rotating structure provided in this application embodiment, by setting a limiting groove on the base, ensures that at least part of the housing is placed in the limiting groove when the housing is tilted relative to the base. This not only improves the stability of the housing during the tilt adjustment process but also helps the housing remain stable after the tilt adjustment is completed. The setting of the sliding block and the first connecting member not only helps to prevent the housing from coming out of the limiting groove but also helps to provide resistance to the rotation of the housing by making the sliding block tightly abut against the housing. This allows the housing to remain stably at the predetermined projection angle for a long time after the tilt adjustment is completed, solving the problem that the projection device is difficult to maintain stably at the predetermined projection angle for a long time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0019] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0020] Figure 1 This is a schematic diagram of the rotating structure provided in an embodiment of this application.

[0021] Figure 2 This is an exploded structural diagram of the rotating structure hidden housing provided in an embodiment of this application.

[0022] Figure 3 A cross-sectional view of the rotating structure provided in an embodiment of this application.

[0023] Figure 4 This is an exploded structural diagram of a rotating structure concealing a housing, provided in another embodiment of this application.

[0024] Figure 5 A cross-sectional view of a rotating structure provided in another embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Sliding groove; 12. Reinforcing groove; 13. Reinforcing component; 14. Heat dissipation groove; 2. Base; 21. Seat body; 211. Restricting groove; 22. Seat bottom; 23. Receiving cavity; 24. Fixing component; 26. Magnetic component; 27. Second wiring hole; 28. Storage slot; 29. ​​Insertion hole; 3. Sliding block; 31. Damping part; 311. Receiving groove; 312. Sliding strip; 32. First connecting part; 33. Second connecting part; 34. First wiring hole; 35. Wiring part; 351. Wiring groove; 352. Pressure plate; 41. First connecting component; 42. Second connecting component; 43. Elastic component; 5. Rolling component; 6. Slide rail; 61. Insert block; 62. First slider; 63. Second slider. Detailed Implementation

[0026] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0027] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0029] This application provides a rotating structure and a projection device to solve the problem that the projection device is difficult to maintain a predetermined projection angle stably for a long time. The following description will be provided in conjunction with the accompanying drawings.

[0030] Please see Figures 1-3 This application provides a rotating structure, including a housing 1, a base 2, a sliding block 3, and a first connecting member 41. The housing 1 has a sliding groove 11, and the base 2 has a recessed limiting groove 211 on one side, with at least a portion of the housing 1 inserted into the limiting groove 211. The sliding block 3 is slidably disposed within the housing 1, passing through the sliding groove 11, and is plugged into the base 2. The first connecting member 41 is disposed within the base 2 and is fixedly connected to the sliding block 3 to prevent the sliding block 3 from detaching from the base 2.

[0031] By setting a limiting groove 211 on the base 2, at least part of the housing 1 is placed in the limiting groove 211 when the housing 1 is tilted relative to the base 2. This not only helps to improve the stability of the housing 1 during the tilt adjustment process, but also helps to keep the housing 1 stable after the tilt adjustment is completed. The setting of the sliding block 3 and the first connecting member 41 not only helps to prevent the housing 1 from coming out of the limiting groove 211, but also helps to provide resistance to the rotation of the housing 1 by making the sliding block 3 closely abut against the housing 1. This allows the housing 1 to be stably maintained at the predetermined projection angle for a long time after the tilt adjustment is completed, thus solving the problem that the projection device is difficult to maintain at the predetermined projection angle for a long time.

[0032] Please see Figure 2 and Figure 3 In this embodiment, the base 2 includes a base body 21 and a base bottom 22. The base bottom 22 is detachably connected to the side of the base body 21 away from the housing 1. The base bottom 22 and the base body 21 are detachably connected by bolts. The base bottom 22 and the base body 21 define a receiving cavity 23. A first connecting member 41 is disposed in the receiving cavity 23. A limiting groove 211 is recessed in the side of the base body 21 near the housing 1. The side wall of the housing 1 is provided with a first curved surface, and the groove wall of the limiting groove 211 is provided with a second curved surface. The first curved surface is an outwardly convex cylindrical curved surface, and the second curved surface is an inwardly concave cylindrical curved surface. The diameter of the second curved surface is slightly larger than the diameter of the first curved surface, so that when part of the housing 1 is placed in the limiting groove 211, the housing 1 can rotate relative to the base 2. A sliding through groove 11 penetrates the side wall of the housing 1 and extends along the side of the housing 1 to limit the sliding of the sliding block 3 relative to the housing 1.

[0033] Please see Figure 2 and Figure 3 The sliding block 3 includes a damping part 31 and a first connecting part 32. A third curved surface is provided on the inner wall of the housing 1, and a fourth curved surface is provided on the side of the damping part 31 near the inner wall of the housing 1. Both the third and fourth curved surfaces are cylindrical surfaces, allowing the sliding block 3 to slide relative to the housing 1 when the housing 1 rotates relative to the base 2. The first connecting part 32 is integrally formed on the side of the damping part 31 near the housing 1, passes through the sliding groove 11, and is inserted into the base 2. A first connecting member 41 is fixedly connected to one end of the first connecting part 32 inserted into the base 2, thus fixing the sliding block 3 to the base 2. In this embodiment, the first connecting member 41 is a flange bolt, and a bolt hole is provided at the end of the first connecting part 32 away from the damping part 31. The first connecting member 41 penetrates the base 2 and is threadedly engaged with the bolt hole. In another embodiment of this application, the first connecting part 32 penetrates the base 2, and the first connecting member 41 is threadedly engaged with the bolt hole. During the process of sliding block 3 disengaging from base 2, the head of the first connector 41 abuts against base 2 to restrict sliding block 3 from disengaging from base 2.

[0034] Please see Figure 2 and Figure 3 In this embodiment, the rotating structure further includes a rolling element 5. A receiving groove 311 is provided on the side of the damping part 31 near the housing 1. The rolling element 5 is housed within the receiving groove 311, and abuts against the groove wall of the receiving groove 311 and the housing 1. In this embodiment, the rolling element 5 is a needle roller. Two receiving grooves 311 are provided, each located at one end of the length of the damping part 31. Two rolling elements 5 are housed within their respective receiving grooves 311. The use of needle rollers helps reduce the resistance when the sliding block 3 slides relative to the housing 1, optimizing the damping feel when the sliding block 3 slides relative to the housing 1.

[0035] Please see Figures 1-3 In addition, in this embodiment, the rotating structure also includes a magnetic attractor 26. A reinforcing groove 12 is formed on the inner wall of the housing 1, and a reinforcing member 13 is placed inside the reinforcing groove 12. The reinforcing member 13 is made of ferromagnetic material. A fixing member 24 is integrally formed on the cavity wall of the receiving cavity 23. A fixing groove is formed on the fixing member 24, and the magnetic attractor 26 is housed in the fixing groove to attract the reinforcing member 13. The magnetic attraction between the magnetic attractor 26 and the reinforcing member 13 helps to improve the stability of the connection between the housing 1 and the base 2 while ensuring that the housing 1 can rotate relative to the base 2, and prevents the housing 1 from detaching from the base 2.

[0036] Please see Figure 4 and Figure 5 In another embodiment of this application, the damping part 31 has two sliding strips 312 integrally formed on the side near the housing 1. The two sliding strips 312 are respectively disposed at both ends in the width direction of the damping part 31. The sliding strips 312 are made of self-lubricating material and abut against the inner wall of the housing 1. The arrangement of the sliding strips 312 helps to reduce the resistance when the sliding block 3 slides relative to the housing 1 and optimizes the damping feel when the sliding block 3 slides relative to the housing 1.

[0037] Please see Figure 4 and Figure 5In another embodiment of this application, the rotating structure further includes a second connecting member 42 and an elastic member 43. The sliding block 3 also includes a second connecting portion 33, which is integrally formed on the side of the damping portion 31 near the housing 1. The second connecting portion 33 penetrates the base 2 and extends into the receiving cavity 23. The second connecting member 42 is connected to one end of the second connecting portion 33 penetrating the base 2. Specifically, the end of the second connecting portion 33 penetrating the base 2 has a threaded hole. The second connecting member 42 is a flange bolt, and the second connecting member 42 is threadedly connected to the second connecting portion 33. The elastic member 43 is a spring, with one end connected to the end of the second connecting member 42 and the other end connected to the base 2. The connection between the second connecting member 42 and the second connecting portion 33 not only helps to limit the sliding block 3 from detaching from the base 2, but also provides pre-pressure to the sliding block 3 through the spring, which helps to optimize the damping feel when the sliding block 3 slides relative to the housing 1.

[0038] Please see Figure 3 and Figure 5 Furthermore, in this embodiment, the sliding block 3 has a first wiring hole 34, and the base 2 has a second wiring hole 27. The openings of the first wiring hole 34 and the second wiring hole 27 are directly opposite each other. The opening of the first wiring hole 34 and the second wiring hole 27 facilitates the connection of electrical components inside the housing 1 and the electrical components inside the base 2 via wires. In another embodiment of this application, the sliding block 3 further includes a wiring section 35, on which a wiring groove 351 is provided. A wire pressing plate 352 is integrally formed on the groove wall of the wiring groove 351, and the wiring groove 351 communicates with the first wiring hole 34. The wiring groove 351 is used to accommodate the wire, and the wire pressing plate 352 is used to restrict the wire from coming out of the wiring groove 351, thereby improving the stability of the wire connection when the housing 1 rotates relative to the base 2.

[0039] Please see Figure 2 and Figure 4In this embodiment, a storage slot 28 is provided at the bottom of the limiting slot 211, and a slide rail 6 is placed inside the storage slot 28. The slide rail 6 abuts against the housing 1. By having the slide rail 6 abut against the housing 1, it is beneficial to reduce the friction when the housing 1 rotates relative to the base 2, and optimize the damping feel when the housing 1 rotates relative to the base 2. In another embodiment of this application, an insert block 61 is integrally formed on the side of the slide rail 6 near the base 2, and an insertion hole 29 is provided at the bottom of the storage slot 28. The insert block 61 and the insertion hole 29 are interference-fitted to improve the stability of the connection between the slide rail 6 and the housing 1. A first slider 62 and a second slider 63 are integrally formed on the side of the slide rail 6 near the housing 1. A heat dissipation groove 14 is provided on the side wall of the housing 1. The first slider 62 abuts against the side wall of the housing 1, and the end of the second slider 63 away from the slide rail 6 extends into the heat dissipation groove 14 and abuts against the bottom of the heat dissipation groove 14. The arrangement of the first slider 62 and the second slider 63 helps to reduce the friction when the housing 1 rotates relative to the base 2, and optimizes the damping feel when the housing 1 rotates relative to the base 2.

[0040] This application also provides a projection device, which includes the rotating structure described above. Since this projection device has the aforementioned rotating structure, it possesses at least some or all of the beneficial effects of the aforementioned rotating structure, which will not be elaborated upon here.

[0041] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0042] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A rotating structure, characterized in that, include: The housing (1) has a sliding groove (11) on it; The base (2) has a limiting groove (211) recessed on one side, and at least part of the housing (1) is placed in the limiting groove (211); Sliding block (3), the sliding block (3) is slidably disposed in the housing (1), the sliding block (3) passes through the sliding groove (11), and the sliding block (3) is inserted into the base (2); A first connector (41) is disposed inside the base (2) and is fixedly connected to the sliding block (3) to restrict the sliding block (3) from detaching from the base (2).

2. The rotating structure according to claim 1, characterized in that, The sliding block (3) includes a damping part (31) and a first connecting part (32). The first connecting part (32) is disposed on one side of the damping part (31). The damping part (31) abuts against the housing (1). The first connecting part (32) passes through the sliding groove (11) and is inserted into the base (2).

3. The rotating structure according to claim 2, characterized in that, The rotating structure further includes a second connector (42) and an elastic member (43). The sliding block (3) further includes a second connecting part (33), which penetrates the base (2). The second connector (42) is connected to one end of the second connecting part (33) penetrating the base (2). The elastic member (43) is connected to the second connector (42) and the base (2).

4. The rotating structure according to claim 1, characterized in that, The rotating structure also includes a rolling element (5). The sliding block (3) has a receiving groove (311) on the side near the housing (1). The rolling element (5) is housed in the receiving groove (311) and abuts against the groove wall of the receiving groove (311) and the housing (1).

5. The rotating structure according to claim 1, characterized in that, The bottom of the limiting groove (211) is detachably connected to a slide rail (6), which abuts against the housing (1).

6. The rotating structure according to claim 5, characterized in that, The slide rail (6) is provided with a plug (61) on the side near the base (2), and the base (2) is provided with an interference fit hole (29) for the plug (61).

7. The rotating structure according to claim 5, characterized in that, The housing (1) is provided with a heat dissipation groove (14). The slide rail (6) is provided with a first slider (62) and a second slider (63) on the side of the housing (1). The first slider (62) abuts against the side wall of the housing (1), and the second slider (63) extends into the heat dissipation groove (14).

8. The rotating structure according to claim 1, characterized in that, The rotating structure also includes a magnetic suction element (26), and a reinforcing element (13) is provided on the housing (1). The reinforcing element (13) is made of ferromagnetic material. A receiving cavity (23) is provided in the base (2). A fixing element (24) is provided on the cavity wall of the receiving cavity (23). A fixing groove is provided on the fixing element (24). The magnetic suction element (26) is housed in the fixing groove to attract the reinforcing element (13).

9. The rotating structure according to claim 1, characterized in that, The sliding block (3) has a first wiring hole (34), and the base (2) has a second wiring hole (27). The opening of the first wiring hole (34) is directly opposite to the opening of the second wiring hole (27).

10. A projection device, characterized in that, The projection device includes a rotating structure as described in any one of claims 1-9.

Images