Stand and projection device

Abstract

The application relates to a support and a projection device, the support comprising a base, a supporting piece and a connecting structure; the base is provided with a containing groove and a first containing cavity; the supporting piece is provided with a second containing cavity and an avoiding hole which are in communication with each other; the connecting structure comprises a first fixing piece and a second fixing piece, the first fixing piece is fixed in the first containing cavity and penetrates the groove bottom of the containing groove, and the second fixing piece is fixed in the second containing cavity; the supporting piece is at least partially arranged in the containing groove, so that the first fixing piece can extend into the second containing cavity from the avoiding hole and rotate to be connected with the second fixing piece; the avoiding hole is configured to avoid the first fixing piece, so that the first fixing piece can rotate relative to the supporting piece. During the rotation of the supporting piece relative to the base, the containing groove wraps part of the supporting piece, so that the connecting structure is located in the first containing cavity and / or the second containing cavity, thereby protecting the first fixing piece and the second fixing piece and reducing the risk of hand injury caused by the first fixing piece and the second fixing piece during the rotation of the supporting piece relative to the base.

Description

Technical Field

[0001] This application relates to the field of projector technology, and more particularly to a stand and a projection device. Background Technology

[0002] A stand can be used to support various projectors. The stand includes a base and a support component. The support component supports the projector and is rotatably connected to the base, allowing the projector to be rotated and folded for easy storage and portability. However, in related technologies, the connection structure between the base and the support component is exposed to the external environment and is easily damaged. Utility Model Content

[0003] This application discloses a bracket and projection device that can protect the connection structure between the base and the support.

[0004] In a first aspect, this application relates to a bracket, including a base, a support member, and a connecting structure; the base is provided with a receiving groove and a first receiving cavity; the support member is provided with a second receiving cavity and a clearance hole that communicate with each other; the connecting structure includes a first fixing member and a second fixing member, the first fixing member being fixed to the first receiving cavity and passing through the bottom of the receiving groove, and the second fixing member being fixed to the second receiving cavity; the support member is at least partially disposed in the receiving groove, so that the first fixing member can extend into the second receiving cavity from the clearance hole and rotatably connect to the second fixing member, and the clearance hole is configured to avoid the first fixing member, so that the first fixing member and the support member can rotate relative to each other.

[0005] When the support member is positioned within the receiving groove, the first fixing member extends into the second receiving cavity through a clearance hole, allowing for a rotatable connection between the second fixing member and the portion of the first fixing member extending into the second receiving cavity. The clearance hole allows the first fixing member to rotate relative to the second fixing member and the support member, enabling the support member to fold or unfold relative to the base. When the support member is folded relative to the base, it facilitates storage and portability; when unfolded, it facilitates the use of the projector. During the rotation of the support member relative to the base, the receiving groove partially encloses the support member, ensuring that the connecting structure is located within the first and / or second receiving cavities. This protects the connecting structure, maintains the aesthetic appearance of the support, and reduces the risk of hand injury from the first and second fixing members during the rotation of the support member relative to the base.

[0006] In some embodiments, the upper surface of the support member has a recess that is configured to avoid the base when the support member rotates relative to the bracket.

[0007] When the support is rotated and folded relative to the base, the recess can accommodate the area above the receiving groove of the base, so as to avoid the base and make the support closer to the side of the base with the receiving groove after folding, thereby reducing the space occupied by the folded bracket.

[0008] In some embodiments, the support member has a first position and a second position relative to the base and is rotatable between the first position and the second position; when the support member is in the first position, the support member is configured to be rotatably folded, and the recessed portion accommodates a portion of the base; when the support member is in the second position, the support member is configured to be rotatably opened, and the lower surface of the support member is flush with the lower surface of the base.

[0009] By driving the support member to rotate relative to the base between a first position and a second position, the support member can be folded or unfolded. When the support member is unfolded, the lower surfaces of the support member and the base can jointly support the projector to facilitate its operation.

[0010] In some embodiments, the clearance hole includes a first inner wall and a second inner wall. When the support is in the first position, the first inner wall is configured to abut against the first fixing member. When the support is in the second position, the second inner wall is configured to abut against the first fixing member. When the support rotates from the first position to the second position, the first fixing member and the support rotate relative to each other by an included angle α, where 60° < α < 90°.

[0011] The support member is positioned at two locations (first position and second position) by abutting against the first fixing member through the first inner wall and the second inner wall, limiting the maximum rotation angle of the support member and preventing excessive rotation. Setting the rotation angle of the support member relative to the first fixing member and the base between 60° and 90° allows the support member to occupy less space after rotation and folding, and also prevents excessive rotation from causing the clearance hole to disengage from the receiving groove, thus exposing the first and second fixing members to the outside.

[0012] In some embodiments, the lower surface of the base is provided with a first pad, which is configured to support the base; the lower surface of the support is provided with a second pad, which is configured to support the support when the support is in a second position.

[0013] When the support is in the second position, the first pad and the second pad together contact the ground or support platform to bear the weight of the base, support and projector, thereby stably supporting the projector.

[0014] In some embodiments, the support member includes a plug-in portion and a support portion, the plug-in portion being rotatably disposed in a receiving groove, and the support portion being connected to the plug-in portion; the receiving groove and the end of the plug-in portion away from the support portion are both arc-shaped.

[0015] The support section can support the projector; the arc-shaped insertion section can be adapted to the arc-shaped receiving groove so that the insertion section can rotate in the receiving groove and drive the support section and the projector to rotate.

[0016] In some embodiments, the connection structure further includes a rotating shaft; the first fixing member is provided with a first connecting hole, and the second fixing member is provided with a second connecting hole; when the support member is at least partially disposed in the receiving groove, the first connecting hole corresponds to the second connecting hole, and the rotating shaft passes through the first connecting hole and the second connecting hole.

[0017] By inserting the first connecting hole and the second connecting hole into the rotating shaft, the first fixing component and the second fixing component can rotate relative to each other around the rotating shaft, which facilitates the connection and assembly of the base and the support component.

[0018] In some embodiments, each end of the base extends upward with an extension portion, and the support member is rotatably disposed between the two extension portions.

[0019] When the support supports the projector or drives the projector to rotate, the two extensions are located on both sides of the projector to protect it.

[0020] In some embodiments, the base includes a first base plate and a first cover plate, a receiving groove and a first fixing member are both disposed on the first base plate, and the first cover plate covers the first base plate to form a first receiving cavity; the support member includes a second base plate and a second cover plate, a second fixing member is disposed on the second base plate, and the second cover plate covers the second base plate to form a second receiving cavity.

[0021] The first cover plate is detachably connected to the first base plate, and the second cover plate is detachably connected to the second base plate, which facilitates the opening and closing of the first and second receiving cavities and makes it convenient to assemble or maintain the first and second fixing components.

[0022] Secondly, this application also relates to a projection device, including a projector and a bracket as described in any of the above embodiments, wherein the projector is mounted on the bracket.

[0023] In the aforementioned projection device, the projector is supported by a support member. The support member drives the projector to rotate relative to the base to adjust the projector's angle. When the support member rotates and folds, it facilitates the storage and portability of the projection device. When the support member rotates and unfolds, the base and support member support the projector for operation. During the process of the support member driving the projector to rotate relative to the base, a receiving groove encloses part of the support member, placing the connecting structure within the first receiving cavity and / or the second receiving cavity. This protects the connecting structure, makes the bracket more aesthetically pleasing, and reduces the risk of hand injuries from being pinched by the first and second fixing members during rotation. Attached Figure Description

[0024] 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 accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the support structure when it is rotated open in one embodiment of this application.

[0026] Figure 2 yes Figure 1 A schematic diagram of the structure of the central support when it rotates and folds.

[0027] Figure 3 yes Figure 1 Cross-sectional view of the central support along line III-III.

[0028] Figure 4 yes Figure 3 A magnified view of section IV in the middle.

[0029] Figure 5 yes Figure 1 Exploded view of the central support structure.

[0030] Figure 6 yes Figure 1 An exploded view of the base and support shows the state when the first and second fixing members are connected.

[0031] Explanation of main component symbols

[0032] 100, bracket; 10, base; 101, first receiving cavity; 102, receiving groove; 1021, notch; 11, extension; 12, first pad; 13, first base plate; 14, first cover plate; 20, support member; 201, second receiving cavity; 202, clearance hole; 2021, first inner wall; 2022, second inner wall; 20a, insertion part; 20b, bearing part; 20c, recessed part; 21, second pad; 22, second base plate; 23, second cover plate; 30, connecting structure; 31, first fixing member; 311, first connecting hole; 32, second fixing member; 321, second connecting hole; 33, rotating shaft. Detailed Implementation

[0033] 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 a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] It should be noted that the concepts of "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0035] A stand can be used to support various projectors. The stand includes a base and a support component. The support component supports the projector and is rotatably connected to the base, allowing the projector to be rotated and folded for easy storage and portability. However, in some related technologies, the connection structure between the base and the support component is exposed to the external environment, resulting in an unsightly appearance, susceptibility to damage, and the risk of hand injuries when the base and support component rotate relative to each other.

[0036] An embodiment of this application provides a bracket, including a base, a support member, and a connecting structure; the base has a receiving groove and a first receiving cavity; the support member has a second receiving cavity and a clearance hole that communicate with each other; the connecting structure includes a first fixing member and a second fixing member, the first fixing member is fixed to the first receiving cavity and passes through the bottom of the receiving groove, and the second fixing member is fixed to the second receiving cavity; the support member is at least partially disposed in the receiving groove, so that the first fixing member can extend into the second receiving cavity from the clearance hole and rotatably connect to the second fixing member, and the clearance hole is configured to avoid the first fixing member, so that the first fixing member and the support member can rotate relative to each other.

[0037] In the aforementioned bracket, when the support member is positioned within the receiving groove, the first fixing member extends into the second receiving cavity through a clearance hole, facilitating a rotatable connection between the second fixing member and the portion of the first fixing member extending into the second receiving cavity. The clearance hole allows the first fixing member to rotate relative to the second fixing member and the support member, enabling the support member to rotate and fold or rotate and unfold relative to the base. When the support member is folded relative to the base, it facilitates the storage and portability of the bracket; when it is unfolded relative to the base, it facilitates the use of the projector. During the rotation of the support member relative to the base, the receiving groove partially encloses the support member, ensuring that the connecting structure is located within the first and / or second receiving cavities. This protects the connecting structure, maintains the bracket's aesthetic appearance, and reduces the risk of hand injury from the first and second fixing members during the rotation of the support member relative to the base.

[0038] The embodiments of this application will be further described below with reference to the accompanying drawings. Unless otherwise specified, the various embodiments in this application can be combined with each other.

[0039] Please see Figure 1 and Figure 2 This application provides a projection device, including a projector (not shown) and a bracket 100. The projector is mounted on the bracket 100 so that it is supported by the bracket 100 when the projector is in operation. In addition, the bracket 100 can also be used to support video players, music players, or other devices that require support.

[0040] In some embodiments, the bracket 100 includes a base 10, a support member 20, and a connecting structure 30. The support member 20 is rotatably connected to the base 10 via the connecting structure 30. The support member 20 is used to connect to and support the projector, and the base 10 is used to provide support force to the support member 20, enabling the bracket 100 to stably support the projector. Exemplarily, the projector can be fixed to the upper surface of the support member 20 by bolts, screws, or threaded rods, or the projector can be glued to the upper surface of the support member 20.

[0041] Please combine Figure 3 and Figure 4 The base 10 is provided with a receiving groove 102 and a first receiving cavity 101. The support member 20 is provided with a second receiving cavity 201 and a clearance hole 202 that are interconnected (see reference). Figure 5 The connecting structure 30 includes a first fixing member 31 and a second fixing member 32. The first fixing member 31 is fixed in the first receiving cavity 101 and passes through the bottom of the receiving groove 102, so that the first fixing member 31 partially extends into the receiving groove 102. The second fixing member 32 is fixed in the second receiving cavity 201.

[0042] The support member 20 is at least partially disposed within the receiving groove 102, allowing the first fixing member 31 to extend into the second receiving cavity 201 through the clearance hole 202. The second fixing member 32 is configured to rotatably connect the portion of the first fixing member 31 extending into the second receiving cavity 201. The clearance hole 202 is configured to allow the first fixing member 31 to rotatably relative to the support member 20.

[0043] In some embodiments, a notch 1021 is provided at the bottom of the receiving groove 102, and the first fixing member 31 passes through the notch 1021 to partially extend into the receiving groove 102. The size of the notch 1021 can be just enough to allow the first fixing member 31 to pass through, or the size of the notch 1021 can be larger than the size of the first fixing member 31. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0044] Please see Figures 1 to 3 When the support member 20 rotates relative to the base 10, the clearance hole 202 avoids the first fixing member 31, so that the first fixing member 31 can rotate relative to the second fixing member 32 and the support member 20, thereby allowing the support member 20 to rotate and fold or rotate and open relative to the base 10.

[0045] When the support member 20 is rotated and folded relative to the base 10, the stand 100 and the projector occupy less space, allowing for easy storage and portability (see reference). Figure 2 When the support member 20 rotates open relative to the base 10, the bracket 100 can support the projector, and the projector can operate (see [reference]). Figure 1 and Figure 3 ).

[0046] During the rotation of the support member 20 relative to the base 10, the receiving groove 102 partially encloses the support member 20, so that the connecting structure 30 is located within the first receiving cavity 101 and / or the second receiving cavity 201, thereby protecting the connecting structure 30 and reducing the risk of hand injury from the first fixing member 31 and the second fixing member 32 during the rotation of the support member 20 relative to the base 10. The receiving groove 102 also covers the clearance hole 202, making the bracket 100 aesthetically pleasing, and preventing foreign objects from entering the second receiving cavity 201 through the clearance hole 202, which could cause the first fixing member 31 and the second fixing member 32 to jam during relative rotation.

[0047] In some embodiments, the base 10 has an extension 11 extending upward from each end, and the support member 20 is rotatably disposed between the two extensions 11. When the support member 20 carries the projector or drives the projector to rotate relative to the base 10, the two extensions 11 are located on both sides of the projector to protect the projector.

[0048] Please combine Figure 3 In some embodiments, the support member 20 includes a plug-in portion 20a and a support portion 20b. The plug-in portion 20a is rotatably disposed within the receiving groove 102, and the support portion 20b is connected to the plug-in portion 20a and is used to connect to and support the projector. The receiving groove 102 and the end of the plug-in portion 20a away from the support portion 20b are both arc-shaped, so that the shape of the plug-in portion 20a is adapted to the shape of the receiving groove 102, so that the plug-in portion 20a can rotate within the receiving groove 102.

[0049] Please see Figure 2 and Figure 3 In some embodiments, the upper surface of the support member 20 is provided with a recess 20c, which is configured to avoid the base 10 when the support member 20 is rotated and folded relative to the bracket 100.

[0050] The recess 20c is provided in the connection area between the insertion part 20a and the support part 20b. When the support member 20 is rotated and folded relative to the base 10, the recess 20c can accommodate the area of ​​the base 10 located above the receiving groove 102 to avoid the base 10. This allows the support member 20 to be closer to the side of the base 10 with the receiving groove 102 after folding, thereby reducing the space occupied by the folded bracket 100.

[0051] In some embodiments, the lower surface of the support member 20 may be provided with an upwardly recessed groove (not shown), corresponding to the recessed portion 20c. The groove is configured to avoid the base 10 when the support member 20 is rotated open relative to the bracket 100. The groove is provided in the area where the insertion portion 20a and the bearing portion 20b are connected. When the support member 20 is rotated open relative to the base 10, the groove can accommodate the area of ​​the base 10 located below the receiving groove 102, thereby avoiding the base 10. Providing the groove allows the area of ​​the base 10 located below the receiving groove 102 to extend toward the support member 20, making the receiving groove 102 deeper. The receiving groove 102 can enclose more of the support member 20, preventing the avoidance hole 202 from being exposed when the bracket 100 is rotated and folded.

[0052] Please see Figures 1 to 3 In some embodiments, the support member 20 has a first position and a second position relative to the base 10. When the support member 20 is rotated and folded relative to the base 10, the support member 20 is defined as being in the first position (see [reference]). Figure 2 When the support member 20 rotates open relative to the base 10, the support member 20 is defined as being in the second position (see [reference]). Figure 1 and Figure 3 By driving the support member 20 to rotate between the first position and the second position, the support member 20 can be switched between the first position and the second position.

[0053] Please see Figure 2 When the support member 20 is in the first position, it moves the projector closer to the side of the base 10 with the receiving groove 102, facilitating storage and carrying of the stand 100 and projector. (See also...) Figure 1 and Figure 3 When the support member 20 is in the second position, the lower surface of the support member 20 is flush with the lower surface of the base 10, and the lower surfaces of the support member 20 and the base 10 can jointly support the projector so that the projector can work.

[0054] Please see Figure 3 In some embodiments, the lower surface of the base 10 is provided with a first pad 12, which is configured to support the base 10. The lower surface of the support member 20 is provided with a second pad 21, which is configured to support the support member 20 when the support member 20 is in the second position.

[0055] When the support member 20 is in the second position, the first pad 12 and the second pad 21 jointly contact the ground or the support platform to support the weight of the base 10, the support member 20, and the projector, thereby stably supporting the projector. Exemplarily, the work platform includes the ground, a desktop, or other load-bearing surfaces; this application does not limit this, and those skilled in the art can choose according to the specific application scenario.

[0056] Please combine Figures 2 to 4 In some embodiments, the clearance hole 202 includes a first inner wall 2021 and a second inner wall 2022. When the support member 20 is in the first position, the first inner wall 2021 is configured to abut against the first fixing member 31 (see...). Figure 2 When the support member 20 is in the second position, the second inner wall 2022 is configured to abut against the first fixing member 31 (see...). Figure 3 and Figure 4 The support member 20 rotates from the first position to the second position, and the first fixing member 31 rotates relative to the support member 20 by an included angle α, where 60° < α < 90°.

[0057] The first fixing member 31 is restricted by the first inner wall 2021 and the second inner wall 2022 to position the support member 20 at two positions (first position and second position), limiting the maximum rotation angle of the support member 20 to prevent excessive rotation. Setting the relative rotation angle between the support member 20 and the first fixing member 31 and the base 10 between 60° and 90° allows the support member 20 to occupy less space after rotation and folding, and also prevents excessive rotation of the support member 20 from causing the clearance hole 202 to disengage from the receiving groove 102, thus exposing the first fixing member 31 and the second fixing member 32 to the outside.

[0058] Please see Figure 2 In some embodiments, the included angle α is configured to be 62° so that the clearance hole 202 is located within the receiving groove 102 after the support 20 is rotated and folded.

[0059] Please see Figure 5 and Figure 6 In some embodiments, the connecting structure 30 further includes a rotating shaft 33. The first fixing member 31 has a first connecting hole 311, and the second fixing member 32 has a second connecting hole 321. The rotating shaft 33 is fixed to the second connecting hole 321. When the support member 20 is at least partially disposed in the receiving groove 102, the first connecting hole 311 corresponds to the second connecting hole 321, and the rotating shaft 33 passes through the first connecting hole 311, allowing the first fixing member 31 and the second fixing member 32 to rotate relative to each other around the rotating shaft 33. The first fixing member 31 and the second fixing member 32 are connected by the rotating shaft 33, resulting in a simple structure and convenient assembly.

[0060] Please see Figure 3 and Figure 4 In some embodiments, the axis of the rotating shaft 33 is located at the opening of the receiving groove 102 and coincides with the side of the base 10 where the receiving groove 102 is provided.

[0061] With other structural elements remaining unchanged, the closer the axis of the rotating shaft 33 is to the bottom of the receiving groove 102, the more likely the support member 20 is to interfere with the upper side of the receiving groove 102 when rotating and folding relative to the base 10; conversely, the farther the axis of the rotating shaft 33 is from the bottom of the receiving groove 102, the more likely the support member 20 is to interfere with the lower side of the receiving groove 102 when rotating and folding relative to the base 10. When the axis of the rotating shaft 33 is located at the opening of the receiving groove 102, the rotating shaft 33 is in a balanced position during folding, which reduces the risk of the support member 20 interfering with the upper or lower side of the receiving groove 102 when rotating and folding relative to the base 10.

[0062] Please see Figure 5 and Figure 6 In some embodiments, the base 10 includes a first base plate 13 and a first cover plate 14. A receiving groove 102 and a first fixing member 31 are both disposed on the first base plate 13. The first cover plate 14 is detachably connected to the first base plate 13 to form a first receiving cavity 101. The support member 20 includes a second base plate 22 and a second cover plate 23. The second fixing member 32 is disposed on the second base plate 22. The second cover plate 23 is detachably connected to the second base plate 22 to form a second receiving cavity 201. Exemplarily, the first cover plate 14 and the first base plate 13 can be connected by bolts, screws, or threaded screws. Alternatively, the first cover plate 14 and the first base plate 13 can be connected by snap-fit ​​connections; this application does not impose any limitations on this.

[0063] The first cover plate 14 is detachably connected to the first base plate 13, and the second cover plate 23 is detachably connected to the second base plate 22, which facilitates opening and closing the first receiving cavity 101 and the second receiving cavity 201, and facilitates the assembly or maintenance of the first fixing member 31 and the second fixing member 32.

[0064] In some embodiments, two first fixing members 31 are spaced apart in the first receiving cavity 101, and two second fixing members 32 are spaced apart in the second receiving cavity 201. The support member 20 is provided with two clearance holes 202 spaced apart, such that each first fixing member 31 extends into the second receiving cavity 201 from one clearance hole 202 and is rotatably connected to the corresponding second fixing member 32. The connection between the two first fixing members 31 and the two second fixing members 32 makes the connection between the support member 20 and the base 10 more secure, and the support member 20 rotates more smoothly relative to the base 10. This application does not limit the number of first fixing members 31 and second fixing members 32; those skilled in the art can select them according to actual conditions.

[0065] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A support, characterized in that, include: The base is provided with a receiving groove and a first receiving cavity; The support member is provided with a second receiving cavity and a clearance hole that are interconnected; The connecting structure includes a first fixing member and a second fixing member. The first fixing member is fixed to the first receiving cavity and passes through the bottom of the receiving groove, and the second fixing member is fixed to the second receiving cavity. The support member is at least partially disposed within the receiving groove, allowing the first fixing member to extend into the second receiving cavity from the clearance hole and rotatably connect to the second fixing member. The clearance hole is configured to allow the first fixing member to pass through, allowing the first fixing member and the support member to rotate relative to each other.

2. The bracket according to claim 1, characterized in that, The upper surface of the support member has a recessed portion, which is configured to avoid the base when the support member is rotated and folded relative to the bracket.

3. The bracket according to claim 2, characterized in that, The support member has a first position and a second position relative to the base, and can rotate between the first position and the second position; When the support is in the first position, the support is configured to rotate and fold, and the recess accommodates a portion of the base; When the support is in the second position, the support is configured to rotate open, and the lower surface of the support is flush with the lower surface of the base.

4. The bracket according to claim 3, characterized in that, The clearance hole includes a first inner wall and a second inner wall. When the support member is in the first position, the first inner wall is configured to abut against the first fixing member. When the support member is in the second position, the second inner wall is configured to abut against the first fixing member. The support rotates from the first position to the second position, and the first fixing member rotates relative to the support member by an included angle α, where 60° < α < 90°.

5. The bracket according to claim 3, characterized in that, The lower surface of the base is provided with a first pad, which is configured to support the base; The lower surface of the support member is provided with a second pad. When the support member is in the second position, the second pad is configured to support the support member.

6. The bracket according to claim 1, characterized in that: The support member includes a plug-in portion and a bearing portion. The plug-in portion is rotatably disposed in the receiving groove, and the bearing portion is connected to the plug-in portion. Both the receiving groove and the end of the insertion part away from the bearing part are arc-shaped.

7. The stent according to any one of claims 1 to 6, characterized in that: The connection structure also includes a rotating shaft; The first fastener has a first connecting hole, and the second fastener has a second connecting hole; When the support member is at least partially disposed in the receiving groove, the first connecting hole corresponds to the second connecting hole, and the rotating shaft passes through the first connecting hole and the second connecting hole.

8. The stent according to claim 7, characterized in that: The base has an extension at each end that extends upwards, and the support is rotatably disposed between the two extensions.

9. The bracket as described in claim 7, characterized in that: The base includes a first base plate and a first cover plate. The receiving groove and the first fixing member are both disposed on the first base plate. The first cover plate is detachably connected to the first base plate to form the first receiving cavity. The support includes a second base plate and a second cover plate. The second fixing member is disposed on the second base plate, and the second cover plate is detachably connected to the second base plate to form the second receiving cavity.

10. A projection device, characterized in that, It includes a projector and a bracket as described in any one of claims 1 to 9, wherein the projector is mounted on the bracket.

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