Supporting device

Abstract

The utility model discloses a supporting device which comprises a base, a rotating support, a first torsional spring driving mechanism, a second torsional spring driving mechanism and a bearing plate, and a connecting support and a first fixing device are arranged on the base; the first torsional spring driving mechanism is installed on the connecting support, the two ends of a rotating shaft of the first torsional spring driving mechanism are correspondingly connected with one end of the rotating support respectively, and the first torsional spring driving mechanism is used for driving the rotating support to rotate and supporting the rotating support in the non-compression state of a torsional spring; the two ends of the second torsional spring driving mechanism are correspondingly connected with the other end of the rotating support respectively, a bearing plate rotationally connected with the second torsional spring driving mechanism is arranged on the second torsional spring driving mechanism, and the second torsional spring driving mechanism is used for driving the bearing plate to rotate and supporting the bearing plate in the non-compression state of the torsional spring; the bearing plate is provided with a second fixing device, when the bearing plate is in an initial state, the first torsional spring driving mechanism and the second torsional spring driving mechanism are both in a torsional spring compression state, and the second fixing device of the bearing plate is connected with the first fixing device in a buckled mode or in a magnetic attraction mode. The supporting device is simple in overall structure and convenient to use and operate, the supporting use function of the bearing plate can be automatically achieved through the elastic effect of the torsional spring, and the convenient requirement of a user is met.

Description

Technical Field

[0001] The utility model relates to the technical field of support frames, in particular to a support device. Background Art

[0002] With the rapid development of electronic technology, small devices such as mobile terminals are gradually becoming widespread. In order to use the devices more effectively and conveniently, a support frame capable of supporting the mobile terminal is required to install or fix the devices at the installation position through the support frame.

[0003] The current supporting device includes a base, a carrier, a bracket, a sliding part and a positioning part, the carrier is used to carry a mobile terminal; the sliding part is arranged on the surface of the base, one end of the carrier is rotatably connected to the sliding part, and the bracket is rotatably connected to both the base and the carrier; the positioning part is arranged on the base and the positioning part is located on the sliding track of the sliding part, when the sliding part drives the carrier to slide, friction damping is generated between the positioning part and the sliding part; when the supporting device is in a closed state, the carrier is stacked on the surface of the base, the sliding part and the positioning part are located at the initial positions, and the bracket is accommodated in the base.

[0004] When in use, it is necessary to push the supporting frame so that the supporting frame slides along the first direction through the sliding part. When the supporting frame slides, it pushes the bracket to rotate and open toward the first direction. At the same time, the reverse driving force given to the supporting frame by the bracket pushes the supporting frame to rotate and open, and supports the supporting frame at a supporting angle on the base.

[0005] However, the overall structure of the above-mentioned support device is relatively complex, and the operation is not convenient enough. The user needs to manually push the support frame to slide to form the support frame structure. Moreover, the support frame on the support device cannot rotate horizontally on the installation surface to meet the needs of users in different positions, and its applicability is low. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a supporting device with a relatively simple overall structure and convenient operation. The supporting function of the load-bearing plate can be automatically realized through the elastic action of the torsion spring, thereby meeting the convenience needs of users.

[0007] In order to solve the above technical problems, the utility model provides a supporting device, including a base, a rotating bracket, a first torsion spring driving mechanism, a second torsion spring driving mechanism and a supporting plate, wherein the base is provided with a connecting bracket and a first fixing device; the first torsion spring driving mechanism is installed on the connecting bracket, and the two ends of the rotating shaft of the first torsion spring driving mechanism are respectively connected to one end of the rotating bracket, and the first torsion spring driving mechanism is used to drive the rotating bracket to rotate and support the rotating bracket in a torsion spring uncompressed state; the two ends of the second torsion spring driving mechanism are respectively connected to the other end of the rotating bracket, and the second torsion spring driving mechanism is provided with a supporting plate rotatably connected thereto, and the second torsion spring driving mechanism is used to drive the supporting plate to rotate and support the supporting plate in a torsion spring uncompressed state; a second fixing device is provided on the supporting plate, and when the supporting plate is in an initial state, the first torsion spring driving mechanism and the second torsion spring driving mechanism are both in a torsion spring compressed state, and the second fixing device of the supporting plate is snap-connected or magnetically connected to the first fixing device.

[0008] As an improvement on the above scheme, the first torsion spring driving mechanism includes a first rotating shaft portion and a first torsion spring sleeved on the first rotating shaft portion, two ends of the first rotating shaft portion respectively pass through the through holes of the connecting support and are connected to the first rotating end of the rotating bracket, a first torsion arm of the first torsion spring is fixedly connected to the first rotating end, and a second torsion arm of the first torsion spring abuts against the upper end surface of the base; the second torsion spring driving mechanism includes a second rotating shaft portion and a second torsion spring sleeved on the second rotating shaft portion, two ends of the second rotating shaft portion are respectively connected to the second rotating end of the rotating bracket, the supporting plate is nested on the second rotating shaft portion, the first torsion arm of the second torsion spring is fixedly connected to the second rotating end, and the second torsion arm of the second torsion spring abuts against the corresponding end surface of the supporting plate.

[0009] As an improvement on the above scheme, the first rotating shaft part and the second rotating shaft part both include a buffer oil pipe and a screw rod, and connecting plates are provided at both ends of the supporting plate. The two ends of the screw rod in the first rotating shaft part respectively pass through the through holes of the connecting support and are connected to the first rotating end of the rotating support, and the two ends of the screw rod in the second rotating shaft part respectively pass through the through holes of the connecting plate and are connected to the second rotating end of the rotating support; the buffer oil pipe is sleeved on the screw rod, and the first torsion spring and the second torsion spring are both sleeved on the corresponding buffer oil pipe; hydraulic oil is provided in the buffer oil pipe, and the two end portions of the buffer oil pipe are respectively sealed and connected to the contact end of the connecting support or the contact end of the supporting plate through sealing sheets.

[0010] As an improvement on the above scheme, the first rotating end and the second rotating end are both provided with a connecting bayonet and a bolt, and the two end portions of the screw rod are provided with a convex end, the convex end is snap-connected with the connecting bayonet, and the bolt is threadedly connected with the inner hole of the convex end; an arc-shaped transition portion and a limiting abutment portion are provided on one side of the second rotating end, and when the bearing plate is in a supporting state, the back side of the bearing plate abuts against the limiting abutment portion along the arc-shaped transition portion, or the back side of the bearing plate abuts against the arc-shaped transition portion.

[0011] As an improvement of the above solution, the first torsion spring driving mechanism and the second torsion spring driving mechanism each further include an outer tube, and the outer tube is respectively sleeved on the first torsion spring and the first rotating shaft portion and on the second torsion spring and the second rotating shaft portion.

[0012] As an improvement of the above solution, the first fixing device and the second fixing device both include a magnet mounting seat and a magnet mounted in the magnet mounting seat.

[0013] As an improvement of the above solution, the first fixing device is an elastic snap-fit ​​component, and the second fixing device is a slot component; or the first fixing device is a slot component, and the second fixing device is an elastic snap-fit ​​component, and the snap-fit ​​component is snap-connected with the slot component.

[0014] As an improvement of the above solution, the second fixing device is arranged on the back side of the carrying plate.

[0015] As an improvement of the above-mentioned scheme, the base includes a fixed base, a movable base and a circular base, the movable base is installed on the fixed base and can rotate circumferentially on the fixed base, and the connecting support and the first fixing device are installed on the movable base; the circular base is installed at the bottom of the fixed base, and the convex round end of the circular base passes through the fixed base and is fixedly connected to the movable base.

[0016] As an improvement on the above scheme, the inner end surface of the movable base is provided with a plurality of ball-shaped holes at intervals in the circumferential direction around the convex round end, and a mounting circular groove is provided in the fixed base, a circular ring is installed on the mounting circular groove, and a plurality of ball-shaped beads are provided at intervals in the circumferential direction on the circular ring, and the ball-shaped beads are adaptably connected to the ball-shaped holes.

[0017] The implementation of this utility model has the following beneficial effects:

[0018] The utility model can fold and store the carrier plate on the base through the cooperation of the first fixing device and the second fixing device, which is convenient for carrying and placing; by manually separating the first fixing device and the second fixing device, the corresponding rotating bracket can be driven to rotate to a preset angle position and support it through the first torsion spring driving mechanism, and the carrier plate can be driven to rotate to a preset angle position and support it through the second torsion spring driving mechanism, thereby realizing the supporting function of the carrier plate, which is convenient for users to place corresponding equipment on the carrier plate for use. Therefore, the overall structure of the utility model is relatively simple, and the operation is convenient to use. The supporting function of the carrier plate can be automatically realized through the elastic action of the torsion spring, meeting the convenience needs of users.

[0019] Secondly, the movable base can rotate circumferentially on the fixed base, so that the rotating bracket and the bearing plate can rotate circumferentially relative to the fixed base to meet the needs of users in different positions, and the applicability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the folding structure of the support device of the utility model;

[0021] Figure 2 It is a schematic diagram of the supporting structure of the supporting device of the utility model;

[0022] Figure 3 It is a schematic diagram of the supporting side structure of the supporting device of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the first torsion spring drive mechanism and the rotating bracket of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the base of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the movable base of the utility model. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 3As shown, a specific embodiment of the utility model provides a structural schematic diagram of a support device, including a base 1, a rotating bracket 2, a first torsion spring driving mechanism 3, a second torsion spring 41 driving mechanism 4 and a bearing plate 5, wherein the base 1 is provided with a connecting support 11 and a first fixing device 12; the first torsion spring driving mechanism 3 is installed on the connecting support 11, and the two ends of the rotating shaft of the first torsion spring driving mechanism 3 are respectively connected to one end of the rotating bracket 2, and the first torsion spring driving mechanism 3 is used to drive the rotating bracket 2 to rotate and support the rotating bracket 2 in a torsion spring non-compressed state; the two ends of the second torsion spring driving mechanism 4 are respectively connected to the other end of the rotating bracket 2, and the second torsion spring driving mechanism 4 is provided with a bearing plate 5 rotatably connected thereto, and the second torsion spring driving mechanism 4 is used to drive the bearing plate 5 to rotate and support the bearing plate 5 in a torsion spring non-compressed state; the bearing plate 5 is provided with a second fixing device 51, and the second fixing device 51 is arranged on the back of the bearing plate 5. The first fixing device 12 and the second fixing device 51 both include a magnet mounting seat and a magnet mounted in the magnet mounting seat.

[0028] When the carrier plate 5 is in the initial state, the first torsion spring driving mechanism 3 and the second torsion spring driving mechanism 4 are both in a torsion spring compression state, and the carrier plate 5 is magnetically connected to the first fixing device 12 through the second fixing device 51, so as to realize the folding and storage of the carrier plate 5 on the base 1, which is convenient for carrying and placing. When the user manually pushes the carrier plate 5 upward, the second fixing device 51 can be separated from the first fixing device 12 (that is, the external force is slightly greater than the difference between the magnetic force and the force of the torsion spring, and the two can be separated). At this time, the torsion spring restoring force of the first torsion spring driving mechanism 3 drives the rotating bracket 2 to rotate to a preset angle position and supports it, and the second torsion spring 41 driving mechanism 4 drives the carrier plate 5 to rotate to a preset angle position and supports it, thereby realizing the supporting use function of the carrier plate 5, which is convenient for users to place corresponding equipment on the carrier plate 5 after the support is completed for use.

[0029] It should be noted that, in other embodiments, the carrier plate 5 can be snap-connected with the first fixing device 12 through the second fixing device 51, so as to realize the folding and storage of the carrier plate 5 on the base 1, which is convenient for carrying and placing. Among them, the first fixing device 12 is an elastic snap-on component, and the second fixing device 51 is a slot component; or the first fixing device 12 is a slot component, and the second fixing device 51 is an elastic snap-on component. When it is necessary to fold the carrier plate 5 to the initial state, the carrier plate 5 can be relatively fixed to the base 1 by snap-connecting the snap-on component with the slot component. When supporting work is required, the snap-on structure can be released by manually pulling / pushing the carrier plate 5, thereby realizing the supporting use function of the carrier plate 5. The elastic snap-on component and the slot component used in this embodiment are both conventional snap-on slot structures, and their specific shapes are not too limited here as long as they can be easily disassembled and installed.

[0030] Preferably, in order to meet the needs of users for supporting different mobile terminals (such as mobile phones or tablets) or small audio equipment, the carrier plate 5 of this embodiment is provided with a plurality of mounting holes, through which the mounting holes are used to mount the assembly rack or placement rack of the corresponding terminal or audio equipment on the carrier plate 5, so as to support and place different equipment to meet the actual support and use needs of users.

[0031] Specifically, Figures 1 to 4 As shown, the structures of the first torsion spring driving mechanism 3 and the second torsion spring driving mechanism 4 are the same. The first torsion spring driving mechanism 3 includes a first rotating shaft portion 31 and a first torsion spring 32 sleeved on the first rotating shaft portion 31. The two ends of the first rotating shaft portion 31 are respectively connected to the first rotating end 21 of the rotating bracket 2 through the through holes of the connecting support 11. The first torsion arm 321 of the first torsion spring 32 is inserted into the first rotating end 21 and fixedly connected thereto. The second torsion arm 322 of the first torsion spring 32 abuts against the upper end surface of the base 1. When the supporting plate 5 is folded to the initial state, the first torsion spring 32 is in a compressed state. When the connection between the supporting plate 5 and the base 1 is unlocked, the first torsion spring 32 drives the rotating bracket 2 to rotate and rotate to a preset angle position according to the restoring force of the torsion spring. At this time, the first torsion spring 32 is in a non-compressed state, and supports the rotating bracket 2 through the second torsion arm 322.

[0032] The second torsion spring driving mechanism 4 includes a second rotating shaft portion and a second torsion spring 41 sleeved on the second rotating shaft portion, the two ends of the second rotating shaft portion are respectively connected to the second rotating end 22 of the rotating bracket 2, the second rotating shaft portion is embedded with the bearing plate 5, the first torsion arm 411 of the second torsion spring 41 is inserted into the second rotating end 22 and fixedly connected thereto, and the second torsion arm 412 of the second torsion spring 41 abuts against the corresponding end surface of the bearing plate 5. When the bearing plate 5 is folded to the initial state, the second torsion spring 41 is in a compressed state. When the connection between the bearing plate 5 and the base 1 is unlocked, the first torsion spring 32 drives the bearing plate 5 to rotate to a preset angle position according to the torsion spring restoring force, at which time the first torsion spring 32 is in a non-compressed state and supports the bearing plate 5. The first torsion spring driving mechanism 3 and the second torsion spring 41 driving mechanism 4 can automatically realize the supporting function of the bearing plate 5 without manual intervention, and the operation is convenient, which can meet the convenience needs of users.

[0033] The first torsion spring 32 and the second torsion spring 41 used in this embodiment are preferably double torsion springs, but this is not a limitation. Both ends of the first torsion spring 32 and the second torsion spring 41 are respectively provided with a first torsion arm, which is L-shaped.

[0034] It should be noted that different rotation angles can be achieved by adjusting the torsion spring accordingly to meet the user's requirements for different actual support angles. The structure is simple and the applicability is high.

[0035] In order to prevent the rotating bracket 2 and the bearing plate 5 from rotating too fast or shaking too much to affect the use effect. The first rotating shaft part 31 and the second rotating shaft part both include a buffer oil pipe 33 and a screw rod 34. The two ends of the bearing plate 5 are provided with connecting plates 52. The two ends of the screw rod 34 in the first rotating shaft part 31 pass through the through holes of the connecting support 11 to connect with the first rotating end 21 of the rotating bracket 2, and the two ends of the screw rod 34 in the second rotating shaft part pass through the through holes of the connecting plate 52 to connect with the second rotating end 22 of the rotating bracket 2. The buffer oil pipe 33 is sleeved on the screw rod 34. The first torsion spring 32 and the second torsion spring 41 are both sleeved on the corresponding buffer oil pipe 33. Hydraulic oil is provided in the buffer oil pipe 33. The two ends of the buffer oil pipe 33 are respectively sealed and connected with the contact end of the connecting support 11 or the contact end of the bearing plate 5 through sealing sheets to prevent hydraulic oil leakage. The hydraulic oil in the buffer oil pipe 33 can provide damping and buffering for the rotating screw 34, limiting the rotation rate, thereby preventing the rotating bracket 2 and the supporting plate 5 from rotating too fast or shaking too much to affect the use effect, thereby improving the user experience.

[0036] The first torsion spring drive mechanism 3 and the second torsion spring drive mechanism 4 both further include an outer tube 35, which is respectively sleeved on the first torsion spring 32 and the first rotating shaft portion 31 and the second torsion spring 41 and the second rotating shaft portion. The outer tube 35 is provided to shield the structures in the first torsion spring drive mechanism 3 and the second torsion spring drive mechanism 4, thereby improving the aesthetics of the product. The torsion arms of the first torsion spring 32 and the second torsion spring 41 both pass through the outer tube 35.

[0037] Preferably, the first rotating end 21 and the second rotating end 22 are both provided with a connecting bayonet 23 and a bolt 24, and the two ends of the screw rod 34 are provided with a convex end 341, and the convex end 341 is snap-connected with the connecting bayonet 23, and the bolt 24 is threadedly connected with the inner hole of the convex end 341, so that the rotating bracket 2 is stably connected with the corresponding torsion spring driving mechanism. An arc-shaped transition portion 221 and a position-limiting abutting portion 222 are provided on one side of the second rotating end 22. When the bearing plate 5 is in a supporting state, the back of the bearing plate 5 abuts against the position-limiting abutting portion 222 along the arc-shaped transition portion 221, so as to further support the bearing plate 5 at this angle position, so as to increase the supporting force and the bearing force of the bearing plate 5. At other preset supporting angle positions, the back of the bearing plate 5 can abut against the arc-shaped transition portion 221, and can also further support the bearing plate 5, so as to increase the supporting force and the bearing force of the bearing plate 5.

[0038] like Figures 5 to 6 As shown, the base 1 includes a fixed base 13, a movable base 14 and a circular base 15. The movable base 14 is installed on the fixed base 13 and can rotate circumferentially on the fixed base 13. The connecting support 11 and the first fixing device 12 are installed on the movable base 14. By rotating the movable base 14, the bearing platform can be rotated along the circumferential direction, which is convenient for users in different positions to use. For example, two users in different positions can switch between using by rotating the movable base 14. It has high applicability and can meet the actual use needs of users.

[0039] The circular base 15 is installed at the bottom of the fixed base 13 , and the convex round end 151 of the circular base 15 passes through the fixed base 13 and is fixedly connected to the movable base 14 , so that the fixed base 13 and the movable base 14 are relatively fixed.

[0040] Among them, the movable base 14 is provided with a screw installation area 141 and a shielding plate 142 covering the screw installation area 141, and the screw installation area 141 is provided with a screw hole 143 and a screw (not shown in the figure), and the screw passes through the screw hole 143 and is connected with the threaded installation hole 152 in the convex round end 151, so that the fixed base 13 and the movable base 14 are relatively fixed, thereby improving the connection firmness; the setting of the shielding plate 142 can effectively improve the aesthetics of the product.

[0041] Preferably, the inner end surface of the movable base 14 is provided with a plurality of bead holes 144 at intervals in the circumferential direction around the convex round end 151, and the fixed base 13 is provided with a mounting circular groove, on which a circular ring 131 is mounted, and on which a plurality of beads 132 are provided at intervals in the circumferential direction, and the beads 132 are adapted to be connected with the bead holes 144. When the movable base 14 is rotated, the beads 132 can slide on the circumferentially arranged bead holes 144 and be engaged and connected, so that the movable chassis is relatively fixed with the fixed base 13 after being rotated to a corresponding angle, meeting the actual use needs of users.

[0042] In summary, the overall structure of the utility model is relatively simple and easy to use and operate. The supporting function of the load-bearing plate 5 can be automatically realized through the elastic action of the torsion spring, thus meeting the convenience needs of users.

[0043] Secondly, the movable base 14 can rotate circumferentially on the fixed base 13, so that the rotating bracket 2 and the bearing plate 5 can rotate circumferentially relative to the fixed base 13 to meet the needs of users in different positions, and has high applicability.

[0044] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A supporting device, characterized in that: It includes a base, a rotating bracket, a first torsion spring driving mechanism, a second torsion spring driving mechanism and a bearing plate, wherein a connecting support and a first fixing device are provided on the base; The first torsion spring driving mechanism is installed on the connecting support, and the two ends of the rotating shaft of the first torsion spring driving mechanism are respectively connected to one end of the rotating bracket, and the first torsion spring driving mechanism is used to drive the rotating bracket to rotate and support the rotating bracket in the torsion spring uncompressed state; The two ends of the second torsion spring driving mechanism are respectively connected to the other end of the rotating bracket, and the second torsion spring driving mechanism is provided with a bearing plate rotatably connected thereto, and the second torsion spring driving mechanism is used to drive the bearing plate to rotate and support the bearing plate when the torsion spring is in an uncompressed state; A second fixing device is provided on the supporting plate. When the supporting plate is in an initial state, the first torsion spring driving mechanism and the second torsion spring driving mechanism are both in a torsion spring compression state, and the second fixing device of the supporting plate is snap-connected or magnetically connected to the first fixing device.

2. The support device according to claim 1, characterized in that: The first torsion spring driving mechanism comprises a first rotating shaft portion and a first torsion spring sleeved on the first rotating shaft portion, the two ends of the first rotating shaft portion respectively pass through the through holes of the connecting support and are connected to the first rotating end of the rotating bracket, the first torsion arm of the first torsion spring is fixedly connected to the first rotating end, and the second torsion arm of the first torsion spring abuts against the upper end surface of the base; The second torsion spring driving mechanism includes a second rotating shaft portion and a second torsion spring sleeved on the second rotating shaft portion, the two ends of the second rotating shaft portion are respectively connected to the second rotating end of the rotating bracket, the second rotating shaft portion is nested with the supporting plate, the first torsion arm of the second torsion spring is fixedly connected to the second rotating end, and the second torsion arm of the second torsion spring abuts against the corresponding end surface of the supporting plate.

3. The supporting device according to claim 2, characterized in that: The first rotating shaft part and the second rotating shaft part both include a buffer oil pipe and a screw rod, and connecting plates are provided at both ends of the bearing plate. The two ends of the screw rod in the first rotating shaft part respectively pass through the through holes of the connecting support and are connected to the first rotating end of the rotating bracket, and the two ends of the screw rod in the second rotating shaft part respectively pass through the through holes of the connecting plate and are connected to the second rotating end of the rotating bracket; The buffer oil pipe is sleeved on the screw rod, and the first torsion spring and the second torsion spring are both sleeved on the corresponding buffer oil pipe; Hydraulic oil is arranged in the buffer oil pipe, and both end portions of the buffer oil pipe are sealedly connected to the contact end of the connecting support or the contact end of the bearing plate through sealing sheets respectively.

4. The supporting device according to claim 3, characterized in that: The first rotating end and the second rotating end are both provided with a connecting bayonet and a bolt, and both ends of the screw rod are provided with a convex end, the convex end is snap-connected with the connecting bayonet, and the bolt is threadedly connected with the inner hole of the convex end; An arcuate transition portion and a limiting abutment portion are provided on one side of the second rotating end. When the supporting plate is in a supporting state, the back side of the supporting plate abuts against the limiting abutment portion along the arcuate transition portion, or the back side of the supporting plate abuts against the arcuate transition portion.

5. The supporting device according to any one of claims 2 to 4, characterized in that: The first torsion spring driving mechanism and the second torsion spring driving mechanism both further include an outer tube, and the outer tube is respectively sleeved on the first torsion spring and the first rotating shaft portion and on the second torsion spring and the second rotating shaft portion.

6. The supporting device according to claim 1, characterized in that: The first fixing device and the second fixing device both include a magnet mounting seat and a magnet mounted in the magnet mounting seat.

7. The supporting device according to claim 1, characterized in that: The first fixing device is an elastic buckle component, and the second fixing device is a slot component; Or the first fixing device is a slot component, and the second fixing device is an elastic buckle component, and the buckle component is buckled and connected to the slot component.

8. The support device according to claim 1, 6 or 7, characterized in that: The second fixing device is arranged on the back side of the carrying plate.

9. The supporting device according to claim 1, characterized in that: The base comprises a fixed base, a movable base and a circular base, the movable base is mounted on the fixed base and can rotate circumferentially on the fixed base, and the connecting support and the first fixing device are mounted on the movable base; The circular base is installed at the bottom of the fixed base, and the convex round end of the circular base passes through the fixed base and is fixedly connected to the movable base.

10. The supporting device according to claim 9, characterized in that: The inner end surface of the movable base is provided with a plurality of ball-shaped holes at intervals in the circumferential direction around the convex circular end, and a mounting circular groove is provided in the fixed base, a circular ring is installed on the mounting circular groove, and a plurality of ball-shaped beads are provided at intervals in the circumferential direction on the circular ring, and the ball-shaped beads are adaptably connected to the ball-shaped holes.

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