Projector support and projector

Abstract

The present disclosure relates to a projector support and a projector, comprising a seat body assembly, a ball and a rotating assembly. The seat body assembly comprises a first gear. The ball is rollably arranged in the seat body assembly. The rotating assembly comprises a support body and a driving member, the driving member is arranged on the support body and is in transmission connection with the first gear, the support body is supported on the seat body assembly through the ball and can rotate relative to the seat body assembly under the driving of the driving member. The present disclosure has the beneficial effect that the projector body can be driven to rotate more smoothly.

Description

Technical Field

[0001] This disclosure relates to the field of projection equipment technology, and in particular to a projector stand and a projector including the projector stand. Background Technology

[0002] The related technology provides a projector bracket, which includes two parts that can rotate relative to each other. One part is used to connect to the projector body so as to drive the projector body to rotate relative to the other part.

[0003] However, the projector bracket in the relevant technology does not rotate smoothly when it drives the projector body to rotate. Utility Model Content

[0004] This disclosure provides a projector stand and a projector, which enables the projector stand to drive the projector body to rotate more smoothly.

[0005] In a first aspect, this disclosure relates to a projector bracket, including a base assembly, ball bearings, and a rotating assembly. The base assembly includes a first gear. The ball bearings are rotatably disposed within the base assembly. The rotating assembly includes a bracket body and a drive member, the drive member being disposed in the bracket body and pulsatorically connected to the first gear. The bracket body is supported on the base assembly by the ball bearings and is capable of rotating relative to the base assembly under the drive of the drive member.

[0006] The aforementioned projector bracket incorporates ball bearings within the base assembly, with the bracket body supported by these ball bearings. When the rotating component rotates relative to the base assembly, the ball bearings roll between the bracket body and the base assembly, reducing friction and allowing for smoother rotation. Therefore, when the rotating component is connected to the projector body, it enables the projector body to rotate more smoothly.

[0007] In one embodiment, the seat assembly has a first support surface on the side of the support body adjacent to the first gear along the axial direction of the first gear. The ball includes a first ball, which is rotatably disposed between the first support surface and the support body.

[0008] In one embodiment, the seat assembly has a second support surface on the side away from the support body along the axial direction of the first gear. The ball bearing includes a second ball bearing that is rotatably disposed between the second support surface and the support body.

[0009] In one embodiment, the seat assembly has a groove, the groove having a first support surface on the side near the support body along the axial direction of the first gear, and a second support surface on the side away from the support body along the axial direction of the first gear. The balls include a first ball and a second ball, the first ball rollingly contacting the first support surface, and the second ball rollingly contacting the second support surface. The support body includes a housing and a pressing member, the pressing member being disposed within the housing and extending into the groove. Along the axial direction of the first gear, the pressing member is located between the first ball and the second ball, and the pressing member is capable of abutting against either the first ball or the second ball along the axial direction of the first gear.

[0010] In one embodiment, the first gear has a receiving hole, and the first gear has an opening communicating with the receiving hole on the side of the first gear axially close to the support body. The first ball is rotatably disposed in the receiving hole, protruding from the opening and able to abut against the pressing member.

[0011] In one embodiment, the receiving hole extends through the first gear in a direction parallel to the axial direction of the first gear; the seat assembly also includes a seat body located on the side of the first gear away from the support body along the axial direction and connected to the first gear, and the side of the seat body close to the first gear along the axial direction of the first gear has a first support surface; or, the receiving hole is a blind hole, and the receiving hole and the bottom wall of the hole opposite the opening form a first support surface.

[0012] In one embodiment, the first gear includes a hub and spokes, with the spokes fitted around the outer periphery of the hub and each having a receiving hole and an opening. The hub protrudes from the spokes on the side near the support body. A pressing member is fitted onto the portion of the hub that protrudes from the spokes. The seat assembly also includes a hanging bracket connected to the first gear, and the hanging bracket protrudes radially from the hub along the first gear. The portion of the hanging bracket protruding radially from the hub along the first gear has a second supporting surface.

[0013] In one embodiment, a first support surface is recessed into the seat assembly along the axial direction of the first gear to form a limiting groove, and a first ball can roll in the limiting groove. The limiting groove surrounds the axis of the first gear and is coaxially arranged with the first gear; and / or, there are multiple first balls, and the multiple first balls are spaced apart along the circumference of the first gear; and / or, there are multiple second balls, and the multiple second balls are spaced apart along the circumference of the first gear.

[0014] In one embodiment, the base assembly further includes a ball sleeve connected to the second support surface. A second ball is disposed within the ball sleeve.

[0015] Secondly, this disclosure also relates to a projector, including a projector bracket and a projector body as described in any of the above embodiments, wherein the projector body is connected to the bracket body. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this disclosure, 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 disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a projector provided in one embodiment of this application.

[0018] Figure 2 for Figure 1 A perspective view of the projector bracket in the illustrated embodiment.

[0019] Figure 3 for Figure 1 Exploded view of the projector bracket in the illustrated embodiment.

[0020] Figure 4 for Figure 1 A partial cross-sectional view of the projector bracket in the illustrated embodiment in its upright position.

[0021] Figure 5 for Figure 1 A partial structural cross-sectional view of the projector bracket in the illustrated embodiment.

[0022] Figure 6 for Figure 1 A partial structural cross-sectional view of the base assembly in the illustrated embodiment.

[0023] Figure 7 for Figure 1 A partial cross-sectional view of the projector bracket in the illustrated embodiment in its suspended state.

[0024] Figure 8 This is a partial structural cross-sectional view of the seat assembly in another embodiment of this application.

[0025] Figure 9 for Figure 1 A partial structural schematic diagram of the projector bracket in the illustrated embodiment.

[0026] Figure 10 This is a partial cross-sectional view of a projector bracket according to another embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] Projector 100

[0029] Projector stand 10

[0030] Seat assembly 11

[0031] Groove 11a

[0032] Limiting groove 11b

[0033] First support surface 1101

[0034] Second support surface 1102

[0035] First gear 111

[0036] Receiving hole 111a

[0037] Opening 111b

[0038] Wheel hub 1111

[0039] Wheel spokes 1112

[0040] Base 112

[0041] Hanging bracket 113

[0042] Bowl section 1131

[0043] Annular part 1132

[0044] Ball sleeve 114

[0045] Rotating component 12

[0046] Support body 121

[0047] Casing 1211

[0048] Pressing component 1212

[0049] Drive component 122

[0050] Second gear 123

[0051] Ball bearing 13

[0052] First ball bearing 1301

[0053] Second ball bearing 1302

[0054] Projector body 20

[0055] The axial direction Z of the first gear

[0056] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0057] The technical solutions of the embodiments of this disclosure 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 disclosure, and not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0058] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this article are for illustrative purposes only.

[0059] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only 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.

[0060] Figure 1 This is a perspective view of a projector 100 provided in one embodiment of this application; Figure 2 for Figure 1 A perspective view of the projector bracket 10 in the illustrated embodiment; Figure 3 for Figure 1 Exploded view of the projector bracket 10 in the illustrated embodiment; Figure 4 for Figure 1 A partial cross-sectional view of the projector bracket 10 in the upright position in the illustrated embodiment.

[0061] See Figure 1 This application provides a projector 100, which includes a projector bracket 10 and a projector body 20.

[0062] See also Figures 2 to 4 The projector bracket 10 includes a base assembly 11 and a rotating assembly 12. The rotating assembly 12 includes a bracket body 121 and a drive member 122. The rotating assembly 12 can rotate relative to the base assembly 11 under the drive of the drive member 122. The projector body 20 is connected to the bracket body 121. The projector body 20 is the main device of the projector 100 that enables it to project images or videos onto a screen or wall.

[0063] In this way, the drive unit 122 can drive the support body 121 to rotate the projector body 20 relative to the base assembly 11, thereby improving the flexibility of adjusting the projection direction of the projector body 20 to meet the user's personalized requirements for the projection position. Optionally, the drive unit 122 can be a motor, such as an electric motor.

[0064] In some embodiments, the projector body 20 is rotatably connected to the support body 121, and the rotation axis of the projector body 20 relative to the support body 121 is perpendicular or obliquely intersecting with the rotation axis of the rotating component 12 relative to the base assembly 11, so as to further improve the adjustment flexibility of the projection direction of the projector 100.

[0065] See Figures 2 to 4 The projector bracket 10 provided in this embodiment includes a base assembly 11, ball bearings 13, and a rotating assembly 12. The base assembly 11 includes a first gear 111, and the ball bearings 13 are rotatably disposed within the base assembly 11. The rotating assembly 12 includes a bracket body 121 and a drive member 122. The drive member 122 is disposed on the bracket body 121 and is drively connected to the first gear 111. The bracket body 121 is supported on the base assembly 11 by the ball bearings 13 and can rotate relative to the base assembly 11 under the drive of the drive member 122.

[0066] The projector bracket 10 described above, by incorporating a drive component 122, drives the bracket body 121 to rotate relative to the base assembly 11, thereby achieving automatic rotation of the projector bracket 10 and improving the flexibility of projection position adjustment. By incorporating ball bearings 13 within the base assembly 11, and with the bracket body 121 supported by these ball bearings, when the rotating component 12 rotates relative to the base assembly 11, the ball bearings 13 roll between the bracket body 121 and the base assembly 11. This reduces friction during rotation of the rotating component 12 relative to the base assembly 11, resulting in smoother rotation, reduced wear, and improved rotational speed of the first gear 111. Therefore, when the rotating component 12 is connected to the projector body 20, it can drive the projector body 20 to rotate more smoothly. In use, the axial direction Z of the first gear 111 can be parallel to the direction of gravity.

[0067] Figure 5 for Figure 1 A partial structural cross-sectional view of the projector bracket 10 in the illustrated embodiment; Figure 6 for Figure 1 A partial structural cross-sectional view of the seat assembly 11 in the illustrated embodiment.

[0068] In some embodiments, combined with Figure 5 and Figure 6As shown, the rotating assembly 12 also includes a second gear 123, which is connected to the output shaft of the drive member 122 and meshes with the first gear 111. Thus, the drive member 122 drives the second gear 123 to rotate around its axis, thereby causing the second gear 123 to rotate along the outer circumference of the first gear 111, which in turn drives the rotating assembly 12 to rotate relative to the base assembly 11 around the axis of the first gear 111.

[0069] Figure 7 for Figure 1 A partial cross-sectional view of the projector bracket 10 in the suspended state in the illustrated embodiment.

[0070] In some embodiments, such as Figure 6 As shown, the seat assembly 11 is provided with a groove 11a, and the groove 11a is along the first gear 111 (see...). Figure 4 The groove 11a has a first support surface 1101 on the side of the first gear 111 closer to the support body 121 along the axial direction Z, and a second support surface 1102 on the side of the first gear 111 away from the support body 121 along the axial direction Z. Figure 4 As shown, the ball bearing 13 includes a first ball bearing 1301 and a second ball bearing 1302. The first ball bearing 1301 is rotatably in contact with the first support surface 1101, and the second ball bearing 1302 is rotatably in contact with the second support surface 1102. The bracket body 121 includes a housing 1211 and a pressing member 1212. The pressing member 1212 is disposed in the housing 1211 and extends into the groove 11a. Along the axial direction Z of the first gear 111, the pressing member 1212 is located between the first ball bearing 1301 and the second ball bearing 1302, and the pressing member 1212 can abut against either the first ball bearing 1301 or the second ball bearing 1302 along the axial direction Z of the first gear 111. Thus, when the pressing member 1212 abuts against the first ball bearing 1301 (for example, in the upright position of the projector bracket 10, see...), Figure 4 The pressing member 1212 is supported on the first support surface 1101 by the first ball bearing 1301. When the bracket body 121 rotates relative to the base assembly 11, the first ball bearing 1301 rolls between the pressing member 1212 and the first support surface 1101, thereby reducing friction. When the pressing member 1212 abuts against the second ball bearing 1302 (for example, in the hanging state of the projector bracket 10, see...),... Figure 7The pressing member 1212 is supported on the second support surface 1102 by the second ball bearing 1302. When the bracket body 121 rotates relative to the seat assembly 11, the second ball bearing 1302 rolls between the pressing member 1212 and the second support surface 1102, thereby reducing friction. Since the first support surface 1101 and the second support surface 1102 are located on opposite sides of the groove 11a, the projector bracket 10 can be supported by the first ball bearing 1301 and the second ball bearing 1302 respectively when placed in different ways, so that the projector bracket 10 can reduce the friction during relative rotation in different placement methods.

[0071] It should be noted that the upright position refers to placing the seat assembly 11 on a bottom support structure, such as a desktop, the ground, or a dedicated support platform, with the bracket body 121 located on the side of the seat assembly 11 away from the bottom support structure along the direction of gravity. The suspended position refers to suspending the seat assembly 11 on a top support structure, such as a ceiling, suspended ceiling, or a dedicated hanger, with the bracket body 121 located on the side of the seat assembly 11 away from the top support structure along the direction of gravity.

[0072] Understandably, since the pressing member 1212 can abut against either the first ball 1301 or the second ball 1302 along the axial direction Z of the first gear 111, the pressing member 1212 has a preset floating amount along the axial direction Z of the first gear 111 between the first ball 1301 and the second ball 1302. This allows the pressing member 1212 to press against the first ball 1301 or the second ball 1302 only under the action of gravity, without the effect of preload. This reduces the rotational resistance between the rotating assembly 12 and the seat assembly 11, reduces the driving force that drives the rotating assembly 12 and the seat assembly 11 to rotate relative to each other, reduces wear, and makes the rotation smoother and more stable.

[0073] Optionally, the housing 1211 and the pressing member 1212 are secured by fasteners (such as screws). Figure 5 As shown, the driving member 122 is located away from the first ball 1301 along the axial direction Z of the first gear 111 from the pressing member 1212 (see...). Figure 4 On one side, the housing of the drive member 122 is fixed to the pressing member 1212 by fasteners.

[0074] In other embodiments, the seat assembly 11 has a first support surface 1101 on the side of the support body 121 along the axial direction Z of the first gear 111. The ball 13 includes a first ball 1301, which is rotatably disposed between the first support surface 1101 and the support body 121. Thus, in use, the support body 121 can be supported on the first support surface 1101 by the first ball 1301, thereby reducing the frictional force of the rotating assembly 12 relative to the seat assembly 11 when the seat assembly 11 is placed on the bottom support structure (i.e., when the projector bracket 10 is in the upright position), through the rolling of the first ball 1301.

[0075] In some embodiments, the seat assembly 11 has a second support surface 1102 on the side of the support body 121 away from the axial direction Z of the first gear 111. The ball 13 includes a second ball 1302, which is rollably disposed between the second support surface 1102 and the support body 121. In use, the support body 121 can be supported on the second support surface 1102 by the second ball 1302, thereby reducing the frictional force of the rotating assembly 12 relative to the seat assembly 11 when the seat assembly 11 is suspended on the top support structure (i.e., when the projector bracket 10 is in the suspended state), through the rolling of the second ball 1302.

[0076] In some embodiments, such as Figure 6 As shown, the first support surface 1101 is constructed as a plane.

[0077] Figure 8 This is a partial structural cross-sectional view of the seat assembly 11 in another embodiment of this application.

[0078] In other embodiments, such as Figure 8 As shown, the first support surface 1101 is along the first gear 111 (see...) Figure 7 A limiting groove 11b is formed within the axial Z-direction seat assembly 11 of the first gear 111. The first ball 1301 can roll within the limiting groove 11b. The limiting groove 11b surrounds the axis of the first gear 111 and is coaxially arranged with the first gear 111. Thus, by providing the limiting groove 11b, the movement trajectory of the first ball 1301 on a plane parallel to the radial plane of the first gear 111 is limited, making the movement trajectory of the first ball 1301 approximately circular, thereby improving the rolling stability of the first ball 1301. Optionally, the shape of the limiting groove 11b matches that of the first ball 1301, that is, the groove wall of the limiting groove 11b is constructed as an arc-shaped surface.

[0079] Figure 9 for Figure 1 A partial structural schematic diagram of the projector bracket 10 in the illustrated embodiment.

[0080] In some embodiments, combined with Figure 7 and Figure 9 As shown, the first gear 111 has a receiving hole 111a, and the first gear 111 has an opening 111b communicating with the receiving hole 111a on the side of the first gear 111 closest to the support body 121 along the axial direction. The first ball 1301 is rotatably disposed in the receiving hole 111a, and the first ball 1301 protrudes from the opening 111b and can abut against the pressing member 1212. Thus, by providing a receiving hole 111a on the first gear 111 to accommodate the first ball 1301, the first ball 1301 can roll within the receiving hole 111a, and the sidewall of the receiving hole 111a is used to limit the rolling stability of the first ball 1301 in the X / Y axis direction, thereby improving the rolling stability of the first ball 1301. The X-axis, Y-axis and Z-axis directions are perpendicular to each other, and the Z-axis direction is parallel to the axial direction Z of the first gear 111.

[0081] It is understandable that when the diameter of the receiving hole 111a is large, the movement trajectory of the first ball 1301 may not be circular. In this case, the limiting groove 11b (see...) can be set to... Figure 8 This provides a limiting function for the first ball 1301, making the movement trajectory of the first ball 1301 approximately circular.

[0082] In some embodiments, such as Figure 7 As shown, the receiving hole 111a penetrates the first gear 111 in a direction parallel to the axial direction Z of the first gear 111. The seat assembly 11 also includes a seat 112, which is located on the side of the first gear 111 away from the support body 121 along the axial direction and is connected to the first gear 111. The seat 112 has a first support surface 1101 on the side of the first gear 111 closer to the first gear 111 along the axial direction Z of the first gear 111 (see...). Figure 6 Thus, the seat 112 and the pressing member 1212 are used as the rolling surfaces of the first ball 1301, and the seat 112 and the pressing member 1212 limit the first ball 1301 in the Z-axis direction, thereby confining the first ball 1301 to roll within the space formed by the seat 112, the pressing member 1212 and the side wall of the receiving hole 111a.

[0083] Figure 10 This is a partial cross-sectional view of the projector bracket 10 in another embodiment of this application.

[0084] In other embodiments, such as Figure 10As shown, the receiving hole 111a is a blind hole, and the bottom wall of the receiving hole 111a opposite to the opening 111b forms a first support surface 1101. Thus, the bottom wall of the receiving hole 111a and the pressing member 1212 are used as the rolling surfaces of the first ball 1301, and the bottom wall of the receiving hole 111a and the pressing member 1212 limit the first ball 1301 in the Z-axis direction, thereby confining the first ball 1301 to roll within the space enclosed by the bottom wall of the receiving hole 111a and the pressing member 1212.

[0085] In some embodiments, such as Figure 3 and Figure 4 As shown, the first gear 111 includes a hub 1111 and spokes 1112. The spokes 1112 are fitted around the outer periphery of the hub 1111 and are respectively provided with receiving holes 111a and openings 111b. The hub 1111 protrudes from the spokes 1112 on the side near the support body 121. A pressing member 1212 is fitted onto the portion of the hub 1111 that protrudes from the spokes 1112. The seat assembly 11 also includes a hanging bracket 113, which is connected to the first gear 111 and protrudes radially from the hub 1111 along the first gear 111. Figure 6 As shown, the portion of the hanging bracket 113 that protrudes radially from the hub 1111 along the first gear 111 has a second support surface 1102. Thus, by providing the hanging bracket 113, when the projector bracket 10 is in the hanging state, the hanging bracket 113 provides load-bearing capacity to the rotating assembly 12 and provides a plane for the second ball bearing 1302 to roll.

[0086] In some embodiments, combined with Figure 3 and Figure 4 As shown, the hanging bracket 113 includes a bowl portion 1131 and an annular portion 1132, with the annular portion 1132 fitting around the edge of the open opening of the bowl portion 1131. The bowl portion 1131 passes through the hub 1111, and the annular portion 1132 is located on the side of the first gear 111 away from the seat body 112. The annular portion 1132 protrudes radially from the hub 1111 and has a second support surface 1102 (see...). Figure 6 This facilitates the connection of the hanging bracket 113 to the first gear 111 and the seat 112, thereby improving the connection reliability of the hanging bracket 113, the first gear 111, and the seat 112. Optionally, the bowl portion 1131 is connected to the seat 112 by fasteners, and the annular portion 1132 is connected to the hub 1111 by fasteners.

[0087] In some embodiments, such as Figure 3As shown, there are multiple first balls 1301, which are spaced apart circumferentially along the first gear 111 to make the load distribution more uniform and reduce the load on a single first ball 1301, thereby further reducing the resistance of the relative rotation of the rotating assembly 12 and the seat assembly 11.

[0088] In some embodiments, such as Figure 3 As shown, there are multiple second balls 1302, which are spaced apart circumferentially along the first gear 111 to make the load distribution more uniform and reduce the load on a single second ball 1302, thereby further reducing the resistance of the relative rotation of the rotating assembly 12 and the seat assembly 11.

[0089] In some embodiments, such as Figure 3 As shown, the seat assembly 11 also includes a ball sleeve 114, which is connected to the second support surface 1102 (see Figure 1102). Figure 6 The second ball 1302 is disposed inside the ball sleeve 114 so that the ball sleeve 114 can limit the second ball 1302 in the X / Y axis direction.

[0090] In the projector bracket 10 described above, in either the upright or suspended state, the base assembly 11 is fixed relative to the bottom or top support structure, and the components of the base assembly 11 are also fixed relative to each other. When it is necessary to adjust the projection direction of the projector body 20, the drive member 122 drives the second gear 123 to rotate, causing the second gear 123 to rotate around the axis of the first gear 111 along its outer circumference. This, in turn, causes the second gear 123 to drive the rotating assembly 12 to rotate, thereby causing the projector body 20 to rotate. In the upright state, the rotating assembly 12 is supported on the base assembly 11 by the first ball bearing 1301, reducing the relative rotational friction through the rolling of the first ball bearing 1301. In the suspended state, the rotating assembly 12 is supported on the base assembly 11 by the second ball bearing 1302, reducing the relative rotational friction through the rolling of the second ball bearing 1302.

[0091] The above description is merely an embodiment of this disclosure and does not limit the patent scope of this disclosure. Any equivalent structural or procedural transformations made using the content of this disclosure and its drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this disclosure.

Claims

1. A projector stand, characterized in that, include: A seat assembly, the seat assembly including a first gear; A ball bearing is rotatably disposed within the seat assembly; as well as, The rotating assembly includes a support body and a driving component. The driving component is disposed on the support body and is connected to the first gear. The support body is supported on the seat assembly by the ball bearings and can rotate relative to the seat assembly under the drive of the driving component.

2. The projector bracket according to claim 1, characterized in that, The seat assembly has a first support surface on the side of the support body close to the axial direction of the first gear; The ball bearing includes a first ball bearing, which is rotatably disposed between the first support surface and the bracket body.

3. The projector bracket according to claim 1, characterized in that, The seat assembly has a second support surface on the side away from the bracket body along the axial direction of the first gear; The ball bearing includes a second ball bearing, which is rotatably disposed between the second support surface and the bracket body.

4. The projector bracket according to claim 1, characterized in that, The seat assembly is provided with a groove, the groove having a first support surface on the side close to the bracket body along the axial direction of the first gear, and a second support surface on the side away from the bracket body along the axial direction of the first gear. The ball includes a first ball and a second ball, wherein the first ball is rotatably in contact with the first support surface, and the second ball is rotatably in contact with the second support surface; The main body of the bracket includes a housing and a pressing member. The pressing member is disposed in the housing and extends into the groove. Along the axial direction of the first gear, the pressing member is located between the first ball and the second ball, and the pressing member can abut against either the first ball or the second ball along the axial direction of the first gear.

5. The projector bracket according to claim 4, characterized in that, The first gear is provided with a receiving hole, and the first gear is provided with an opening communicating with the receiving hole on the side of the first gear close to the support body along the axial direction; The first ball is rotatably disposed within the receiving hole, protruding from the opening and able to abut against the pressing member.

6. The projector bracket according to claim 5, characterized in that, The receiving hole passes through the first gear in a direction parallel to the axial direction of the first gear; the seat assembly also includes a seat, the seat is located on the side of the first gear away from the bracket body in the axial direction and is connected to the first gear, and the seat has the first support surface on the side of the first gear close to the first gear in the axial direction of the first gear. or, The receiving hole is a blind hole, and the bottom wall of the hole opposite to the opening forms the first support surface.

7. The projector bracket according to claim 5, characterized in that, The first gear includes a hub and spokes. The spokes are fitted around the outer periphery of the hub and are respectively provided with the receiving hole and the opening. The hub protrudes from the spokes on the side close to the support body. The pressure-retaining component is fitted onto the portion of the wheel hub that protrudes from the wheel spokes; The seat assembly further includes a hanging bracket connected to the first gear, and the hanging bracket protrudes radially from the hub along the first gear, the portion of the hanging bracket protruding radially from the hub along the first gear having a second support surface.

8. The projector stand according to any one of claims 4 to 7, characterized in that, The first support surface is recessed into the seat assembly along the axial direction of the first gear to form a limiting groove. The first ball can roll in the limiting groove. The limiting groove surrounds the axis of the first gear and is coaxially arranged with the first gear. And / or, There are multiple first balls, and the multiple first balls are spaced apart along the circumference of the first gear; And / or, There are multiple second balls, which are spaced apart along the circumference of the first gear.

9. The projector stand according to any one of claims 4 to 7, characterized in that, The seat assembly also includes a ball sleeve connected to the second support surface; The second ball is disposed inside the ball sleeve.

10. A projector, characterized in that, include: Projector stand as described in any one of claims 1 to 9; as well as, The projector body is connected to the bracket body.

Images