Supporting device

Abstract

The utility model discloses a supporting device which comprises a support, a connecting module and an elastic connecting structure. An abutting part is arranged on the bracket; the connecting module is rotatably arranged on the support, an abutting face is arranged on the connecting module, and the abutting face comprises a first inclined face and a first plane which are in smooth connection. According to the supporting device, when the connecting module rotates around the support in the forward direction so that the connecting module can be switched from the backward leaning state to the forward leaning state, the abutting part on the support can move to the first inclined face along the first plane, and due to the arrangement of the first inclined face, the compression amount of the elastic connecting structure is larger when the connecting module is in the forward leaning state; therefore, the pressure between the connecting module and the bracket is improved, so that when the connecting module is in a forward inclining state, larger friction force can be formed between the connecting module and the bracket, and the probability of screen falling of the connecting module in the forward inclining state is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting devices, and particularly relates to a supporting device. Background Art

[0002] The supporting device includes a bracket and a display. In order to adapt to the height difference between the display and the user, the display is usually rotatably arranged on the bracket up and down. The user rotates the display up and down so that the viewer can face the display screen directly, thereby improving the visual experience of the user when watching the display.

[0003] In the related art, the display is rotatably arranged on the bracket through a torsion spring. Under the drive of the user, the display can rotate forward or backward relative to the bracket so that the display can switch between the forward tilt state and the backward tilt state, and the torsion spring is used to balance the gravity of the display itself so that the display can be stably in the forward tilt state or the backward tilt state.

[0004] However, when the display rotates forward relative to the bracket to the forward tilt state, the component force applied by the display to the torsion spring is greater, so that when the display is in the forward tilt state, there will be a screen dropping phenomenon of continuing to rotate forward. Summary of the Utility Model

[0005] An object of the utility model is to solve at least one of the technical problems existing in the prior art. The utility model provides a supporting device, and the display device adopting the supporting device in this embodiment can reduce the probability of the screen dropping phenomenon of the display.

[0006] According to the supporting device provided by the embodiment of the utility model, it includes a bracket, a connection module and an elastic connection structure; a contact part is arranged on the bracket; the connection module is rotatably arranged on the bracket, and a contact surface is arranged on the connection module. The contact surface includes a first inclined surface and a first plane which are smoothly connected. Under the action of an external force, the connection module can rotate relative to the bracket to switch between the forward tilt state and the backward tilt state. When the connection module rotates forward to the forward tilt state, the contact part abuts against the first inclined surface. When the connection module rotates backward to the backward tilt state, the contact part abuts against the first plane; the elastic connection structure is respectively connected with the connection module and the bracket, and is used to provide an elastic force for keeping the contact part in contact with the contact surface.

[0007] The support device described in the present invention has at least the following beneficial effects: in the support device of the present application, the connecting module can be connected to the display screen, and when the connecting module rotates in the forward direction around the bracket so that the display screen on the connecting module switches from a reclining state to a forward leaning state, the abutting portion on the bracket can move along the first plane to the first inclined surface. The setting of the first inclined surface makes the elastic connecting structure more compressed when the display screen is in a forward leaning state, thereby increasing the pressure between the connecting module and the bracket, so that when the display screen is in a forward leaning state, there can be greater friction between the connecting module and the bracket, thereby reducing the probability of the display screen falling off when it is in a forward leaning state.

[0008] According to the supporting device described in an embodiment of the present invention, the bracket includes a frame, a rotating shaft and a first abutment, the connecting module includes a second abutment, the rotating shaft is passed through the frame, the first abutment and the second abutment are both sleeved on the rotating shaft, the second abutment is arranged between the first abutment and the frame, and is rotatable relative to the rotating shaft, and the abutment portion and the abutment surface are respectively arranged at the end close to the first abutment and the second abutment.

[0009] According to the supporting device described in an embodiment of the present invention, the bracket also includes a threaded abutment, which is threadedly sleeved on the rotating shaft and is located on the side of the first abutment away from the second abutment, and the opposite ends of the elastic connection structure are respectively connected to the threaded abutment and the first abutment.

[0010] According to the supporting device described in the embodiment of the present invention, the elastic connection structure includes at least one elastic gasket, and the elastic gasket is sleeved on the rotating shaft.

[0011] According to the supporting device described in an embodiment of the present invention, a first abutment structure and a second abutment structure are provided on the connecting module, and a third abutment structure and a fourth abutment structure are provided on the bracket. When the connecting module is in a forward-leaning state, the first abutment structure abuts against the third abutment structure to prevent the connecting module from continuing to rotate forward. When the connecting module is in a backward-leaning state, the second abutment structure abuts against the fourth abutment structure to prevent the connecting module from continuing to rotate backward.

[0012] According to the supporting device described in the embodiment of the present invention, an arc-shaped groove is provided on the connecting module, and the arc-shaped groove is extended circumferentially along the rotation axis of the connecting module. The two opposite groove walls of the arc-shaped groove in its own extension direction respectively form a first abutment structure and a second abutment structure; a limiting protrusion is provided on the bracket, and the limiting protrusion is passed through the arc-shaped groove, and the limiting protrusion forms a third abutment structure and a fourth abutment structure at both ends of the limiting protrusion in the circumferential direction of the rotation axis of the connecting module respectively.

[0013] According to the support device described in the embodiments of the present utility model, the connection module further includes a connection frame, the connection frame is rotatably sleeved on the rotating shaft, and an arc-shaped groove is arranged on the connection frame; the support further includes a limiting member sleeved on the rotating shaft, the limiting member is arranged adjacent to the connection frame, and a limiting protrusion is arranged at one end of the limiting member close to the connection frame.

[0014] According to the support device described in the embodiments of the present utility model, a connection portion is arranged at one end of the second abutting member close to the connection frame, and the connection portion is connected to the connection frame.

[0015] According to the support device described in the embodiments of the present utility model, a second inclined surface and a second plane which are smoothly connected are arranged on the abutting portion, the second inclined surface is used for abutting against the first inclined surface, and the second plane is used for abutting against the first plane.

[0016] According to the support device described in the embodiments of the present utility model, a plurality of abutting portions are arranged on the support, the plurality of abutting portions are circumferentially and spaced apart around the rotation axis of the connection module, and a plurality of abutting surfaces corresponding to the abutting portions are arranged on the connection module.

[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0019] Figure 1 is a schematic structural diagram of a support device according to an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 a schematic structural diagram of a partial structure of the support device shown;

[0021] Figure 3 is Figure 2 a partially enlarged view of the structure at position A of the support device shown;

[0022] Figure 4 is Figure 2 an exploded view of the support device shown;

[0023] Figure 5 is Figure 2 a schematic structural diagram of the first abutting member of the support device shown;

[0024] Figure 6 is Figure 2 a schematic structural diagram of the second abutting member of the support device shown.

[0025] Reference numerals:

[0026] Bracket 100; frame body 110; rotating shaft 120; first abutting member 130; abutting portion 131; second inclined surface 131a; second plane 131b; threaded abutting member 140; limiting member 150; limiting protrusion 151; third abutting structure 151a; fourth abutting structure 151b;

[0027] Connection module 200; second abutting member 210; abutting surface 211; first inclined surface 211a; first plane 211b; connecting portion 212; connecting frame 220; arc-shaped groove 221; first abutting structure 221a; second abutting structure 221b;

[0028] Elastic connection structure 300; elastic gasket 310. Specific embodiments

[0029] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0030] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0031] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0033] Next, refer to Figures 1 to 6 to describe the support device of the present application in detail.

[0034] Refer to Figure 1 and Figure 2, The support device according to an embodiment of the present utility model includes a bracket 100, a connection module 200, and an elastic connection structure 300.

[0035] The bracket 100 is provided with an abutting portion 131; the connection module 200 is rotatably arranged on the bracket 100, and the connection module 200 is provided with an abutting surface 211. The abutting surface 211 includes a first inclined surface 211a and a first flat surface 211b that are smoothly connected. Under the action of an external force, the connection module 200 can rotate relative to the bracket 100 to switch between a forward-tilt state and a backward-tilt state. When the connection module 200 rotates forward to the forward-tilt state, the abutting portion 131 abuts against the first inclined surface 211a. When the connection module 200 rotates backward to the backward-tilt state, the abutting portion 131 abuts against the first flat surface 211b; the elastic connection structure 300 is respectively connected to the connection module 200 and the bracket 100, and is used to provide an elastic force that keeps the abutting portion 131 in abutment with the abutting surface 211.

[0036] For example, as Figure 5 and Figure 6 shown, the abutting portion 131 is located on the right side of the abutting surface 211. The abutting surface 211 includes a first inclined surface 211a and a first flat surface 211b that are smoothly connected. The first flat surface 211b is a vertical plane, and along the direction away from the first flat surface 211b, the first inclined surface 211a gradually extends toward the right side close to the abutting portion 131.

[0037] It should be noted that in the supporting device of this embodiment, the connection module 200 is used to mount the display screen. When the display screen on the connection module 200 is in the reclined state, the abutting portion 131 abuts against the first plane 211b. When the user drives the connection module 200 to rotate forward so that the display screen on the connection module 200 is converted from the reclined state to the forward-tilted state, the abutting portion 131 gradually changes from abutting against the first plane 211b to abutting against the first inclined surface 211a. Since the first inclined surface 211a extends toward the side close to the abutting portion 131 along the direction away from the first plane 211b, when the abutting portion 131 abuts against the first inclined surface 211a, the compression amount of the elastic connection structure 300 is greater, and the greater the rotation arc of the connection module 200 forward, the greater the compression amount of the elastic connection structure 300. Furthermore, when the display screen on the connection module 200 is in the forward-tilted state, the pressure between the abutting portion 131 and the abutting surface 211 is also greater. Correspondingly, there is a greater frictional force between the abutting portion 131 and the abutting surface 211 to reduce the probability of the forward-tilt phenomenon of the display screen on the connection module 200; when the user drives the connection module 200 to rotate backward so that the display screen on the connection module 200 is converted from the forward-tilted state to the reclined state, the abutting portion 131 gradually changes from abutting against the first inclined surface 211a to abutting against the first plane 211b. Since the first plane 211b is a vertical plane, the resistance received by the connection module 200 when rotating backward is smaller, and when the display screen on the connection module 200 is converted from the forward-tilted state to the reclined state, the user feels lighter when driving the connection module 200 to rotate.

[0038] In some embodiments of the present invention, the bracket 100 includes a frame body 110, a rotating shaft 120, and a first abutting member 130. The connection module 200 includes a second abutting member 210. The rotating shaft 120 passes through the frame body 110. Both the first abutting member 130 and the second abutting member 210 are sleeved on the rotating shaft 120. The second abutting member 210 is disposed between the first abutting member 130 and the frame body 110 and is rotatably disposed relative to the rotating shaft 120. The abutting portion 131 and the abutting surface 211 are respectively disposed at one end of the first abutting member 130 and the second abutting member 210 that are close to each other.

[0039] For example, as Figure 2 and Figure 4As shown, the bracket 100 includes a frame 110, a rotating shaft 120 and a first abutment 130, and the connecting module 200 includes a second abutment 210. The rotating shaft 120 is passed through the frame 110 and extends in the left and right directions. The first abutment 130 is sleeved on the rotating shaft 120 and is located on the right side of the frame 110. The second abutment 210 is rotatably sleeved on the rotating shaft 120 and is located between the first abutment 130 and the frame 110. The left end face of the first abutment 130 is provided with an abutment portion 131, and the right end face of the second abutment 210 is provided with an abutment surface 211, and from a right-to-left perspective, the first inclined surface 211a is located on the side of the first plane 211b in the counterclockwise direction.

[0040] It can be understood that, from a right-to-left perspective, when the display screen on the connecting module 200 is converted from a reclining state to a forward leaning state, the connecting module 200 rotates clockwise, and during this process, the second abutment 210 rotates clockwise relative to the first abutment 130, and the abutment portion 131 moves from the first plane 211b to the first inclined surface 211a, and the damping force between the first abutment 130 and the second abutment 210 gradually increases; when the display screen on the connecting module 200 is converted from a forward leaning state to a reclining state, the connecting module 200 rotates counterclockwise, and during this process, the second abutment 210 rotates counterclockwise relative to the first abutment 130, and the abutment portion 131 moves from the first inclined surface 211a to the first plane 211b, and the damping force between the first abutment 130 and the second abutment 210 gradually decreases, and then remains stable.

[0041] In a further embodiment of the present invention, the bracket 100 also includes a threaded abutment 140, which is threadedly sleeved on the rotating shaft 120 and is located on the side of the first abutment 130 away from the second abutment 210, and the opposite ends of the elastic connection structure 300 are respectively connected to the threaded abutment 140 and the first abutment 130.

[0042] For example, Figure 2 and Figure 4 As shown, the bracket 100 also includes a threaded abutment 140, which is threadedly sleeved on the rotating shaft 120 and is located on the right side of the first abutment 130. The left and right ends of the elastic connection structure 300 are respectively abutted against the first abutment 130 and the threaded abutment 140.

[0043] It is understandable that the user can adjust the left and right position of the threaded abutment 140 on the rotating shaft 120 by rotating the threaded abutment 140, thereby adjusting the compression amount of the elastic connection structure 300 to adjust the damping force between the first abutment 130 and the second abutment 210.

[0044] Specifically, the threaded abutting member 140 is a nut, which has a simple structure and is easy to obtain.

[0045] In some embodiments of the present utility model, the elastic connection structure 300 includes at least one elastic gasket 310, and the elastic gasket 310 is sleeved on the rotating shaft 120.

[0046] For example, as Figure 4 shown, the elastic connection structure 300 includes four elastic gaskets 310. The four elastic gaskets 310 are arranged adjacent to each other in the left - right direction, and all four elastic gaskets 310 are sleeved on the rotating shaft 120. The elastic gasket 310 located on the rightmost side abuts against the threaded abutting member 140, and the elastic gasket 310 located on the leftmost side abuts against the first abutting member 130.

[0047] It can be understood that the structural size of the elastic gasket 310 is small. By setting the elastic gasket 310, the structural size of the entire support device can be reduced to achieve miniaturization of the support device structure.

[0048] It should be noted that the specific number of the elastic gaskets 310 is set according to actual needs, and is not limited to Figure 4 the four shown in the figure. According to requirements, the number of the elastic gaskets 310 can also be set to one, two, five, etc.

[0049] In some embodiments of the present utility model, referring to Figure 3 , the connection module 200 is provided with a first abutting structure 221a and a second abutting structure 221b, and the bracket 100 is provided with a third abutting structure 151a and a fourth abutting structure 151b. When the display screen on the connection module 200 is in the forward - inclined state, the first abutting structure 221a abuts against the third abutting structure 151a to prevent the connection module 200 from continuing to rotate forward. When the display screen on the connection module 200 is in the backward - inclined state, the second abutting structure 221b abuts against the fourth abutting structure 151b to prevent the connection module 200 from continuing to rotate backward.

[0050] It can be understood that when the display screen on the connection module 200 is in the forward - inclined state, the first abutting structure 221a abuts against the third abutting structure 151a to prevent the connection module 200 from continuing to rotate forward. When the display screen on the connection module 200 is in the backward - inclined state, the second abutting structure 221b abuts against the fourth abutting structure 151b to prevent the connection module 200 from continuing to rotate backward. The settings of the first abutting structure 221a, the second abutting structure 221b, the third abutting structure 151a, and the fourth abutting structure 151b enable the rotation angle of the connection module 200 relative to the bracket 100 to be limited within a certain range.

[0051] In a further embodiment of the present utility model, referring to Figure 3 , an arc-shaped groove 221 is provided on the connection module 200. The arc-shaped groove 221 extends circumferentially along the rotation axis of the connection module 200. Opposite groove walls of the arc-shaped groove 221 in its extending direction respectively form a first abutting structure 221a and a second abutting structure 221b; a limiting protrusion 151 is provided on the bracket 100. The limiting protrusion 151 is inserted into the arc-shaped groove 221, and opposite ends of the limiting protrusion 151 in the circumferential direction of the rotation axis of the connection module 200 respectively form a third abutting structure 151a and a fourth abutting structure 151b.

[0052] It should be noted that when the connection module 200 rotates forward by a certain angle, the first abutting structure 221a on the arc-shaped groove 221 can abut against the third abutting structure 151a on the limiting protrusion 151 to prevent the connection module 200 from continuing to rotate forward, so that the display screen on the connection module 200 can be stably in a forward-tilted state; when the connection module 200 rotates backward by a certain angle, the second abutting structure 221b on the arc-shaped groove 221 can abut against the fourth abutting structure 151b on the limiting protrusion 151 to prevent the connection module 200 from continuing to rotate backward, so that the display screen on the connection module 200 can be stably in a backward-tilted state.

[0053] It can be understood that the structure of the arc-shaped groove 221 is simple and easy to process.

[0054] In a further embodiment of the present utility model, the connection module 200 further includes a connection frame 220. The connection frame 220 is rotatably sleeved on the rotating shaft 120, and the arc-shaped groove 221 is provided on the connection frame 220; the bracket 100 further includes a limiting member 150 sleeved on the rotating shaft 120. The limiting member 150 is arranged adjacent to the connection frame 220, and the limiting protrusion 151 is provided at one end of the limiting member 150 close to the connection frame 220.

[0055] For example, as Figures 2 to 4 shown, the connection module 200 further includes a connection frame 220. A display screen (not shown in the figure) is installed on the connection frame 220. The connection frame 220 is rotatably sleeved on the rotating shaft 120 and is located between the second abutting member 210 and the frame body 110. The arc-shaped groove 221 is provided on the connection frame 220. The bracket 100 further includes a limiting member 150. The limiting member 150 is sleeved on the rotating shaft 120 and is located on the right side of the connection frame 220. A limiting protrusion 151 is provided at the left end of the limiting member 150, and the limiting protrusion 151 is inserted into the arc-shaped groove 221.

[0056] It can be understood that by providing the connecting frame 220, and the connecting frame 220 is rotatably sleeved on the rotating shaft 120, the connecting frame 220 can rotate around the rotating shaft 120, thereby realizing the rotation of the connecting module 200 around the rotating shaft 120; at the same time, the connecting frame 220 is rotatably arranged on the rotating shaft 120, which can make the connection between the connecting module 200 and the bracket 100 more firm.

[0057] In a further embodiment of the present invention, a connecting portion 212 is provided at one end of the second abutting member 210 close to the connecting frame 220, and the connecting portion 212 is connected to the connecting frame 220.

[0058] For example, as Figure 6 shown, a connecting portion 212 is provided at the left end of the second abutting member 210, and the connecting portion 212 is connected to the connecting frame 220 through a threaded connector.

[0059] It can be understood that since the connecting portion 212 of the second abutting member 210 is connected to the connecting frame 220, the second abutting member 210 and the connecting frame 220 can rotate synchronously around the rotating shaft 120 to realize the rotation of the connecting module 200 around the rotating shaft 120.

[0060] In some embodiments of the present invention, referring to Figure 5 , a second inclined surface 131a and a second flat surface 131b which are smoothly connected are provided on the abutting portion 131. The second inclined surface 131a is used to abut against the first inclined surface 211a, and the second flat surface 131b is used to abut against the first flat surface 211b.

[0061] It can be understood that when the display screen on the connecting module 200 is in the forward-tilt state, the first inclined surface 211a abuts against the second inclined surface 131a. At this time, under the abutting action of the first inclined surface 211a and the second inclined surface 131a, the distance between the first abutting member 130 and the second abutting member 210 increases, the compression amount of the elastic connection structure 300 increases, and the damping force between the first abutting member 130 and the second abutting member 210 increases; when the display screen on the connecting module 200 is in the backward-tilt state, the first flat surface 211b abuts against the second flat surface 131b. At this time, the distance between the first abutting member 130 and the second abutting member 210 is smaller and relatively stable, and the damping force between the first abutting member 130 and the second abutting member 210 is smaller and relatively stable.

[0062] In some embodiments of the present invention, a plurality of abutting portions 131 are provided on the bracket 100, and the plurality of abutting portions 131 are circumferentially spaced apart around the rotation axis of the connecting module 200. A plurality of abutting surfaces 211 corresponding to the abutting portions 131 are provided on the connecting module 200.

[0063] For example, as Figure 5 andFigure 6 As shown, two abutting portions 131 are provided on the bracket 100, and two abutting surfaces 211 are correspondingly provided on the connecting module 200. The two abutting portions 131 are circumferentially spaced apart around the rotation axis of the connecting module 200, and the two abutting surfaces 211 are distributed to abut against the two abutting portions 131.

[0064] It can be understood that by providing a plurality of abutting portions 131 and circumferentially spacing the plurality of abutting portions 131 around the rotation axis of the connecting module 200, the force between the bracket 100 and the connecting module 200 can be made more uniform, so as to extend the service life of the support device of the present application.

[0065] It should be noted that the number of the provided abutting portions 131 is, in addition to Figure 5 the two shown in the figure, according to actual requirements, the number of the provided abutting portions 131 can also be three, four, or even more.

[0066] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A support device, characterized in that, Comprising: A bracket (100), on which an abutting portion (131) is provided; A connection module (200), rotatably provided on the bracket (100), on which an abutting surface (211) is provided, the abutting surface (211) includes a first inclined surface (211a) and a first flat surface (211b) that are smoothly connected. Under an external force, the connection module (200) can rotate relative to the bracket (100) to switch between a forward tilt state and a backward tilt state. When the connection module (200) rotates forward to the forward tilt state, the abutting portion (131) abuts against the first inclined surface (211a), and when the connection module (200) rotates backward to the backward tilt state, the abutting portion (131) abuts against the first flat surface (211b); An elastic connection structure (300), which is respectively connected to the connection module (200) and the bracket (100), and is used to provide an elastic force for keeping the abutting portion (131) in contact with the abutting surface (211).

2. The support device according to claim 1, wherein, The bracket (100) includes a frame body (110), a rotating shaft (120) and a first abutting member (130), the connection module (200) includes a second abutting member (210), the rotating shaft (120) passes through the frame body (110), both the first abutting member (130) and the second abutting member (210) are sleeved on the rotating shaft (120), the second abutting member (210) is provided between the first abutting member (130) and the frame body (110), and is rotatably arranged relative to the rotating shaft (120), and the abutting portion (131) and the abutting surface (211) are respectively provided at one end of the first abutting member (130) and the second abutting member (210) that are close to each other.

3. The support device according to claim 2, characterized in that, The bracket (100) further includes a threaded abutting member (140), the threaded abutting member (140) is threadedly sleeved on the rotating shaft (120), and is located on the side of the first abutting member (130) away from the second abutting member (210), and the opposite ends of the elastic connection structure (300) are respectively connected to the threaded abutting member (140) and the first abutting member (130).

4. The support device according to claim 3, characterized in that, The elastic connection structure (300) includes at least one elastic gasket (310), and the elastic gasket (310) is sleeved on the rotating shaft (120).

5. The support device according to claim 2, characterized in that, The connection module (200) is provided with a first abutting structure (221a) and a second abutting structure (221b), and the bracket (100) is provided with a third abutting structure (151a) and a fourth abutting structure (151b). When the connection module (200) is in a forward-tilt state, the first abutting structure (221a) abuts against the third abutting structure (151a) to prevent the connection module (200) from continuing to rotate forward. When the connection module (200) is in a backward-tilt state, the second abutting structure (221b) abuts against the fourth abutting structure (151b) to prevent the connection module (200) from continuing to rotate backward.

6. The support device according to claim 5, characterized in that, The connection module (200) is provided with an arc-shaped groove (221). The arc-shaped groove (221) extends circumferentially along the rotation axis of the connection module (200). Opposite groove walls of the arc-shaped groove (221) in its extending direction respectively form the first abutting structure (221a) and the second abutting structure (221b). The bracket (100) is provided with a limiting protrusion (151). The limiting protrusion (151) passes through the arc-shaped groove (221), and opposite ends of the limiting protrusion (151) in the circumferential direction of the rotation axis of the connection module (200) respectively form the third abutting structure (151a) and the fourth abutting structure (151b).

7. A support device according to claim 6, characterized in that, The connection module (200) further includes a connection frame (220). The connection frame (220) is rotatably sleeved on the rotating shaft (120), and the arc-shaped groove (221) is arranged on the connection frame (220). The bracket (100) further includes a limiting member (150) sleeved on the rotating shaft (120). The limiting member (150) is arranged adjacent to the connection frame (220), and the limiting protrusion (151) is arranged at one end of the limiting member (150) close to the connection frame (220).

8. A support device according to claim 7, characterized in that, One end of the second abutting member (210) close to the connection frame (220) is provided with a connection portion (212). The connection portion (212) is connected to the connection frame (220).

9. The support device according to claim 1, characterized in that, The abutting portion (131) is provided with a second inclined surface (131a) and a second flat surface (131b) which are smoothly connected. The second inclined surface (131a) is used for abutting against the first inclined surface (211a), and the second flat surface (131b) is used for abutting against the first flat surface (211b).

10. A support device according to claim 1, characterized in that, The bracket (100) is provided with a plurality of the abutting portions (131). The plurality of abutting portions (131) are circumferentially spaced apart around the rotation axis of the connection module (200). The connection module (200) is provided with a plurality of the abutting surfaces (211) corresponding to the abutting portions (131).

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