Projection support

Abstract

The utility model belongs to the field of machine manufacturing, and particularly relates to a projection support which comprises a base. The first shell is rotationally connected with the base, and a first transmission gear is rotationally connected to the first shell; the second shell is rotationally connected with the first shell, and insections are arranged on the second shell; the supporting rod is rotationally connected with the second shell, one end of the supporting rod is provided with a mounting panel, and the mounting panel is used for mounting a projector; the first driving assembly is connected with the first shell, the first driving assembly is connected with the first transmission gear, and the first transmission gear is meshed with the insection on the second shell; the second driving assembly is connected with the second shell, and the second driving assembly is connected with the supporting rod; according to the projector adjusting method and device, the position of the projector can be adjusted, the projection angle of the projector can also be adjusted, multi-dimension and multi-form adjustment of the projector is achieved, and different types of adjustment requirements of the projector can be fully met.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical manufacturing, and in particular relates to a projection bracket. Background Art

[0002] A projection stand is a device that supports a projector and is usually used in classrooms, conference rooms, and other places. It can fix the projector in a fixed position and make it easy to adjust the position of the projector.

[0003] The existing projection bracket can play a role in adjusting the projector, but it can usually only be adjusted in a single direction such as vertically or horizontally. The adjustable dimensions are relatively single, which may make it difficult to always adjust the projector to a suitable position.

[0004] Therefore, the existing projection bracket has the problem of a single adjustment dimension for the projector. Utility Model Content

[0005] The purpose of the embodiment of the utility model is to provide a projection bracket, aiming to solve the problem that the existing projection bracket has a single adjustment dimension for the projector.

[0006] The embodiment of the utility model is implemented in this way, providing a projection bracket, the projection bracket comprising:

[0007] Pedestal;

[0008] A first housing is rotatably connected to the base, and a first transmission gear is rotatably connected to the first housing;

[0009] A second shell is rotatably connected to the first shell, and the second shell is provided with tooth patterns;

[0010] A support rod is rotatably connected to the second shell, one end of the support rod is provided with a mounting panel, the mounting panel is used to mount the projector, and under the action of an external force, the first shell rotates around the base in a first direction, thereby causing the projector to rotate in the first direction;

[0011] A first driving assembly is connected to the first housing, the first driving assembly is connected to the first transmission gear, the first transmission gear is meshed with the teeth on the second housing, and under the drive of the first driving assembly, the second housing is rotated around the first housing in the second direction through the transmission of the first transmission gear, thereby causing the projector to rotate in the second direction;

[0012] The second driving assembly is connected to the second shell, and the second driving assembly is connected to the support rod. Under the drive of the second driving assembly, the support rod rotates axially on the second shell, thereby causing the projector to rotate.

[0013] Preferably, a rotating shaft is provided in the first shell, and both ends of the rotating shaft are respectively rotatably connected to the shell wall of the first shell, and both ends of the rotating shaft pass through the shell wall of the first shell and extend outside the shell wall of the first shell, and a first transmission gear is respectively provided at both ends of the rotating shaft;

[0014] The first drive assembly comprises:

[0015] A first motor is arranged in the first housing, and a first output gear is arranged at an output end of the first motor;

[0016] The intermediate gear is sleeved on the rotating shaft and meshes with the first output gear.

[0017] Preferably, the second shell includes a first extension portion and a second extension portion, and circular holes are provided on the first extension portion and the second extension portion; two cylindrical protrusions are provided on the outer wall of the first shell, and the two cylindrical protrusions are located so that the axes of the two cylindrical protrusions coincide, and each cylindrical protrusion is embedded in a circular hole; teeth are arranged on the edge of the first extension portion and the edge of the second extension portion, and the teeth on the first extension portion are meshed with a first gear, and the teeth on the second extension portion are meshed with another first gear; under the drive of the first motor, the first gear rotates to apply power to the teeth, thereby causing the second shell to rotate around the cylindrical protrusion.

[0018] Preferably, a rotating drum is sleeved on the support rod, a through hole is opened on the shell wall of the second shell, and the rotating drum is rotatably connected to the through hole; the second driving assembly includes:

[0019] A second motor is disposed in the second housing, and an output end of the second motor is provided with a second output gear;

[0020] The second transmission gear is sleeved on the rotating drum; after the second motor is driven, the rotating drum is rotated through the transmission of the second output gear and the second transmission gear, thereby driving the supporting rod to rotate along the axis of the rod.

[0021] Preferably, a first limiting portion and a second limiting portion are provided on the base, and the first shell is provided between the first limiting portion and the second limiting portion; an axis rod is provided between the first limiting portion and the second limiting portion, the axis rod passes through the shell wall of the first shell, and both ends of the axis rod are respectively connected to the first limiting portion and the second limiting portion; the shell wall of the first shell is rotatably connected to the axis rod, and under the action of external force, the first shell rotates around the axis rod.

[0022] Preferably, a plurality of limiting grooves are provided on the first limiting portion and the second limiting portion; a limiting support and a limiting block are provided on the first shell for each limiting portion, and the limiting block is connected to the limiting support through a spring; when there is no external force, the elastic force of the spring causes the limiting block to extend into a limiting groove to limit the first shell; when an external force acts on the limiting block, the limiting block is pulled out of the limiting groove and moves with the rotation of the first shell acted upon by another external force; after the first shell stops rotating and the external force acting on the limiting block is removed, the limiting block extends into another limiting groove to limit the first shell.

[0023] A projection bracket provided by an embodiment of the utility model includes a base; a first shell, rotatably connected to the base, and a first transmission gear is rotatably connected to the first shell; a second shell, rotatably connected to the first shell, and a tooth pattern is provided on the second shell; a support rod, rotatably connected to the second shell, and a mounting panel is provided at one end of the support rod, and the mounting panel is used to mount the projector; a first drive assembly is connected to the first shell, and the first drive assembly is connected to the first transmission gear, and the first transmission gear meshes with the tooth pattern on the second shell; a second drive assembly is connected to the second shell, and the second drive assembly is connected to the support rod; in the present application, both the position of the projector and the projection angle of the projector can be adjusted, thereby realizing multi-dimensional and multi-form adjustment of the projector, and being able to fully meet different types of adjustment requirements for the projector. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional structural diagram of a projection bracket provided in an embodiment of the utility model;

[0025] Figure 2 A diagram showing the relationship between a first driving assembly and a second shell of a projection bracket provided in an embodiment of the utility model;

[0026] Figure 3 A diagram showing the relationship between a second driving assembly and a support rod of a projection bracket provided by an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of a base of a projection bracket provided by an embodiment of the utility model;

[0028] In the accompanying drawings: 1. base; 11. first limiting portion; 12. second limiting portion; 2. first shell; 21. first transmission gear; 22. rotating shaft; 23. first motor; 24. first output gear; 25. intermediate gear; 3. second shell; 31. tooth pattern; 32. first extension portion; 33. second extension portion; 34. second motor; 35. second output gear; 36. second transmission gear; 4. support rod; 41. mounting panel; 42. rotating drum. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0031] like Figure 1 As shown, a projection bracket provided by an embodiment of the utility model, the projection bracket comprises:

[0032] Base 1;

[0033] A first housing 2 is rotatably connected to the base 1, and a first transmission gear 21 is rotatably connected to the first housing 2;

[0034] The second housing 3 is rotatably connected to the first housing 2, and the second housing 3 is provided with tooth patterns 31;

[0035] The support rod 4 is rotatably connected to the second housing 3. One end of the support rod 4 is provided with a mounting panel 41. The mounting panel 41 is used to mount the projector. Under the action of an external force, the first housing 2 rotates around the base 1 in a first direction, thereby causing the projector to rotate in the first direction.

[0036] A first driving assembly is connected to the first housing 2. The first driving assembly is connected to the first transmission gear 21. The first transmission gear 21 is meshed with the tooth pattern 31 on the second housing 3. Under the drive of the first driving assembly, the second housing 3 is rotated in the second direction around the first housing 2 through the transmission of the first transmission gear 21, thereby causing the projector to rotate in the second direction.

[0037] The second driving assembly is connected to the second shell 3, and the second driving assembly is connected to the support rod 4. Under the drive of the second driving assembly, the support rod 4 rotates axially on the second shell 3, thereby causing the projector to rotate.

[0038] In this embodiment, the first direction is in the horizontal plane, so that the projector can be rotated along the first direction even if the projector is rotated along the horizontal plane; the plane where the second direction is located is perpendicular to the plane where the first direction is located; the first shell 2 and the second shell 3 are both long strip shells, and the lengths of the two shells can be 1m, 2m or other lengths; the first shell 2 can rotate in the first direction, and the second shell 3 can rotate in the second direction, so that the projector can be adjusted to various positions in the three-dimensional space (within the reachable range of the shell length), and the rotational adjustment can also make the projector tilt to different degrees, and with the help of the self-rotation function of the support rod 4, the direction of the projector can be further adjusted, thereby realizing multi-dimensional and multi-form adjustment of the projector, which can fully meet different types of adjustment requirements for the projector.

[0039] As a preferred embodiment, a rotating shaft 22 is provided in the first housing 2, and both ends of the rotating shaft 22 are rotatably connected to the housing wall of the first housing 2, and both ends of the rotating shaft 22 pass through the housing wall of the first housing 2 and extend outside the housing wall of the first housing 2, and a first transmission gear 21 is provided at both ends of the rotating shaft 22;

[0040] The first drive assembly comprises:

[0041] A first motor 23 is disposed in the first housing 2, and a first output gear 24 is disposed at an output end of the first motor 23;

[0042] The intermediate gear 25 is sleeved on the rotating shaft 22 , and the intermediate gear 25 is meshed with the first output gear 24 .

[0043] The second shell 3 includes a first extension portion 32 and a second extension portion 33, and circular holes are provided on the first extension portion 32 and the second extension portion 33; two cylindrical protrusions are provided on the outer wall of the first shell 2, and the two cylindrical protrusions are located at a position where the axes of the two cylindrical protrusions coincide, and each cylindrical protrusion is embedded in a circular hole; the tooth pattern 31 is arranged at the edge of the first extension portion 32 and the edge of the second extension portion 33, and the tooth pattern 31 on the first extension portion 32 is meshed with a first gear, and the tooth pattern 31 of the second extension portion 33 is meshed with another first gear; under the drive of the first motor 23, the first gear rotates to apply power to the tooth pattern 31, thereby causing the second shell 3 to rotate around the cylindrical protrusion.

[0044] In this embodiment, the first shell 2 and the second shell 3 are both rectangular cylindrical shells; one end of the second shell 3 facing the first shell 2 is open, and the other end is closed; the first extension portion 32 and the second extension portion 33 are arranged on the edge of the opening of the first shell 2, and the edge where the first extension portion 32 is located and the edge where the second extension portion 33 is located are a set of opposite sides of the opening cross section of the second shell 3; the distance between the first extension portion 32 and the geothermal extension portion is just greater than the width of the cross section of the first shell 2, so that the first shell 2 can be just clamped between the first extension portion 32 and the second extension portion 33, and the length of the first extension portion 32 and the second extension portion 33 exceeds a set value, such as 30 cm, 50 cm or other lengths, so as to separate the other two sides of the opening of the second shell 3 from the first shell 2, so that the second shell 3 will not collide with the first shell 2 when rotating.

[0045] As a preferred embodiment, a rotating drum is sleeved on the support rod 4, a through hole is opened on the shell wall of the second shell 3, and the rotating drum is rotatably connected to the through hole; the second driving assembly includes:

[0046] A second motor 34 is disposed in the second housing 3, and a second output gear 35 is disposed at an output end of the second motor 34;

[0047] The second transmission gear 36 is sleeved on the drum; after the second motor 34 is driven, the drum is rotated through the transmission of the second output gear 35 and the second transmission gear 36, thereby driving the support rod 4 to rotate along the axis of the rod.

[0048] In this embodiment, a circular hole matching the cross-sectional shape of the rotating drum is provided on the second shell 3, the rotating drum is embedded in the circular hole and can rotate in the circular hole, the diameter of the second transmission gear 36 arranged on the outer wall of the rotating drum is larger than the diameter of the circular hole, which can form a limiting effect on the rotating drum so that the rotating drum will not fall out of the circular hole; the support rod 4 is a cylinder with a square cross-section, and a channel matching the cross-sectional shape of the support rod 4 is provided in the rotating drum, so that the support rod 4 can be pulled out and loaded from the rotating drum, and the support rod 4 and the rotating drum will not rotate relative to each other when the rotating drum rotates; in addition, a detachable limiting portion is provided at the other end of the support rod 4, which can limit the support rod 4 in the rotating drum and prevent it from sliding out of the rotating drum; the support rod 4 is coaxially arranged with the rotating drum, and the projector is coaxially arranged with the support rod 4, so that the projector can rotate coaxially with the rotating drum.

[0049] As a preferred embodiment, a first limiting portion 11 and a second limiting portion 12 are provided on the base 1, and the first shell 2 is provided between the first limiting portion 11 and the second limiting portion 12; an axis rod is provided between the first limiting portion 11 and the second limiting portion 12, the axis rod passes through the shell wall of the first shell 2, and both ends of the axis rod are respectively connected to the first limiting portion 11 and the second limiting portion 12; the shell wall of the first shell 2 is rotatably connected to the axis rod, and under the action of external force, the first shell 2 rotates around the axis rod.

[0050] A plurality of limiting grooves are provided on the first limiting portion 11 and the second limiting portion 12; a limiting support and a limiting block are provided on the first shell 2 for each limiting portion, and the limiting block is connected to the limiting support through a spring; when there is no external force, the elastic force of the spring causes the limiting block to extend into a limiting groove to limit the first shell 2; when an external force acts on the limiting block, the limiting block is pulled out of the limiting groove and moves with the rotation of the first shell 2 acted upon by another external force; after the first shell 2 stops rotating and the external force acting on the limiting block is removed, the limiting block extends into another limiting groove to limit the first shell 2.

[0051] In this embodiment, the first limiting portion 11 and the second limiting portion 12 are two panels arranged opposite to each other, and the two panels are vertically opposite to each other, so that the first shell 2 arranged between the two panels can rotate in the horizontal direction, and the distance between the two panels is just greater than the height of the first shell 2, so that the two panels can just clamp the first shell 2, and with the help of the shaft rod, the first shell 2 can be stably limited between the two panels; the number of limiting grooves opened on the first limiting portion 11 and the second limiting portion 12 can be 5, 7 or other numbers, so that the first shell 2 can be limited every time it rotates a certain angle in the horizontal direction to avoid horizontal displacement of the projector after the position is adjusted.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A projection bracket, characterized in that: The projection bracket comprises: Pedestal; A first housing is rotatably connected to the base, and a first transmission gear is rotatably connected to the first housing; A second shell is rotatably connected to the first shell, and the second shell is provided with tooth patterns; A support rod is rotatably connected to the second shell, one end of the support rod is provided with a mounting panel, the mounting panel is used to mount the projector, and under the action of an external force, the first shell rotates around the base in a first direction, thereby causing the projector to rotate in the first direction; A first driving assembly is connected to the first housing, the first driving assembly is connected to the first transmission gear, the first transmission gear is meshed with the teeth on the second housing, and under the drive of the first driving assembly, the second housing is rotated around the first housing in the second direction through the transmission of the first transmission gear, thereby causing the projector to rotate in the second direction; The second driving assembly is connected to the second shell, and the second driving assembly is connected to the support rod. Under the drive of the second driving assembly, the support rod rotates axially on the second shell, thereby causing the projector to rotate.

2. The projection bracket according to claim 1, characterized in that: A rotating shaft is provided in the first housing, and both ends of the rotating shaft are respectively rotatably connected to the housing wall of the first housing, and both ends of the rotating shaft pass through the housing wall of the first housing and extend outside the housing wall of the first housing, and a first transmission gear is respectively provided at both ends of the rotating shaft; The first drive assembly comprises: A first motor is arranged in the first housing, and a first output gear is arranged at an output end of the first motor; The intermediate gear is sleeved on the rotating shaft and meshes with the first output gear.

3. The projection bracket according to claim 2, characterized in that: The second shell includes a first extension portion and a second extension portion, and circular holes are provided on the first extension portion and the second extension portion; two cylindrical protrusions are provided on the outer wall of the first shell, and the two cylindrical protrusions are located at a position where the axes of the two cylindrical protrusions coincide, and each cylindrical protrusion is embedded in a circular hole; teeth are arranged on the edge of the first extension portion and the edge of the second extension portion, and the teeth on the first extension portion are meshed with a first gear, and the teeth on the second extension portion are meshed with another first gear; under the drive of the first motor, the first gear rotates to apply power to the teeth, thereby causing the second shell to rotate around the cylindrical protrusion.

4. The projection bracket according to claim 1, characterized in that: A rotating drum is sleeved on the support rod, a through hole is opened on the shell wall of the second shell, and the rotating drum is rotatably connected to the through hole; the second driving assembly includes: A second motor is disposed in the second housing, and an output end of the second motor is provided with a second output gear; The second transmission gear is sleeved on the rotating drum; after the second motor is driven, the rotating drum is rotated through the transmission of the second output gear and the second transmission gear, thereby driving the supporting rod to rotate along the axis of the rod.

5. The projection bracket according to claim 1, characterized in that: A first limiting portion and a second limiting portion are provided on the base, and the first shell is provided between the first limiting portion and the second limiting portion; an axis rod is provided between the first limiting portion and the second limiting portion, the axis rod passes through the shell wall of the first shell, and both ends of the axis rod are respectively connected to the first limiting portion and the second limiting portion; the shell wall of the first shell is rotatably connected to the axis rod, and under the action of external force, the first shell rotates around the axis rod.

6. The projection bracket according to claim 5, characterized in that: A number of limiting grooves are provided on the first limiting part and the second limiting part; a limiting support and a limiting block are provided on the first shell for each limiting part, and the limiting block is connected to the limiting support through a spring; when there is no external force, the elastic force of the spring causes the limiting block to extend into a limiting groove to limit the first shell; when an external force acts on the limiting block, the limiting block is pulled out of the limiting groove and moves with the rotation of the first shell acted upon by another external force; after the first shell stops rotating and the external force acting on the limiting block is removed, the limiting block extends into another limiting groove to limit the first shell.

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