CN212537228U - Clamping device for fixing support - Google Patents

Abstract

A clamping device for fixing a bracket comprises an inner rotating piece and an outer rotating piece, wherein the outer rotating piece is used for connecting and fixing a fastening connecting piece of the bracket; the clamping device comprises an inner rotating piece, an outer rotating piece, a supporting table and a clamping device, wherein the inner rotating piece is provided with a plurality of grooves; when rotating outer rotating member, outer rotating member drives interior rotating member through the first effort that linkage structure and recess produced and rotates, when the second effort that rotates outer rotating member is greater than first effort, supports to move into another recess by the piece, and outer rotating member takes place relative movement with interior rotating member. Which can prevent the clamping assembly from being damaged.

Description

Clamping device for fixing support

Technical Field

The utility model relates to an on-vehicle support technical field, in particular to a clamping device for fixed bolster.

Background

In the driving process, the mobile phone navigation plays a vital role, and the mobile phone support plays a role in supporting the mobile phone and adjusting the angle of the mobile phone. The existing mobile phone support is generally clamped on blades of an automobile air outlet, but different models of automobiles have different blades, so that the mobile phone support needs to be provided with an adjustable clamping structure to be clamped on different blades. But at present adjustable cell phone stand is threaded connection an regulating plate on the trip usually, adjusts the trip through rotatory regulating plate and to the distance between the regulating plate to fix cell phone stand on the blade through regulating plate and trip. When the adjusting plate is rotated, the problem that the mobile phone support is damaged due to overlarge force is often caused.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a clamping device for fixed bolster can avoid continuing to rotate outer rotating member under the condition that the centre gripping subassembly has been in the clamping state, leads to the centre gripping subassembly to be extrudeed excessively and damage.

A clamping device for fixing a support comprises an inner rotating part, an outer rotating part and a fastening connecting part for connecting and fixing the support, wherein the inner rotating part is provided with a first through hole;

a supporting table is arranged on the outer wall of the inner rotating piece along the circumferential direction, a plurality of continuously arranged grooves are formed in the upper surface of the supporting table, a linkage structure is arranged in the outer rotating piece and is obliquely arranged, the linkage structure comprises a first elastic piece and a propping block, one end of the first elastic piece is fixed in the outer rotating piece, and the other end of the first elastic piece extrudes the propping block in the groove along the direction oblique to the axis of the clamping device;

when rotating outer rotating member, outer rotating member accessible linkage structure and the recess between the first effort that produces drive interior rotating member synchronous rotation, when the second effort that rotates outer rotating member is greater than first effort, support to move into adjacent this recess by the piece in, outer rotating member and interior rotating member take place relative movement.

The utility model discloses an in the embodiment, the outer wall of above-mentioned outer rotating member is equipped with the operation piece, and this operation piece is located this brace table's top, is equipped with the holding hole in this operation piece, and this holding hole extends the setting along the direction that inclines to this clamping device axis, and this linkage structure installs downtheholely at this holding.

In an embodiment of the present invention, the groove includes a first wall and a second wall, and the slope of the first wall is equal to that of the second wall.

In an embodiment of the present invention, the first wall surface and the second wall surface are curved surfaces, and the first wall surface and the second wall surface are connected by a curved surface transition; alternatively, the first wall surface and the second wall surface are flat surfaces.

In an embodiment of the present invention, the abutting block is provided with a contact surface contacting with the first wall surface and/or the second wall surface, and the contact surface is a curved surface or a flat surface.

The utility model discloses an in the embodiment, above-mentioned fastening connection spare includes first arm lock, second arm lock and is used for connecting the connecting piece of this support, be equipped with the external screw thread on the outer wall of this connecting piece, be equipped with the internal thread on the pore wall of this first through-hole, this internal rotation spare is connected in this connecting piece through this internal thread and this external screw thread fit, the upper end of this first arm lock and this second arm lock rotates with this connecting piece respectively and is connected, the lower extreme of this first arm lock and this second arm lock is used for being close to each other and presss from both sides tight object under the drive of this internal rotation spare.

In an embodiment of the present invention, a containing cavity is disposed below the connecting member, the upper ends of the first and second clamp arms are rotatably disposed in the containing cavity through a first rotating shaft and a second rotating shaft, respectively, and the first rotating shaft is parallel to the second rotating shaft; the side of the first clamping arm back to the second clamping arm is provided with a first extrusion part, the side of the second clamping arm back to the first clamping arm is provided with a second extrusion part, and when the outer rotating part is rotated to enable the inner rotating part to move, the inner rotating part can be abutted against the first extrusion part and the second extrusion part, so that the lower ends of the first clamping arm and the second clamping arm are driven to be close to each other.

In an embodiment of the present invention, the fastening connector further includes a second elastic member, and two ends of the second elastic member respectively abut against the first clamping arm and the second clamping arm.

The utility model discloses an in the embodiment, above-mentioned fastening connection spare is equipped with the external screw thread including the fixed connecting piece that colludes and be used for connecting this support on the outer wall of this connecting piece, is equipped with the internal thread on the pore wall of this first through-hole, and this internal rotation spare is connected in this connecting piece through this internal thread and this external screw thread fit, and the upper end and this connecting piece fixed connection that should fix collude, and the lower extreme that should fix collude is used for being close to the lower surface of this internal rotation spare and presss from both sides tight object under the drive of this.

The utility model discloses an in the embodiment, above-mentioned clamping device still includes support piece, is equipped with the third through-hole on this support piece, is equipped with the second buckle on the pore wall of this third through-hole, and this support piece is put on this internal rotation piece through this third through-hole cover, is equipped with the draw-in groove on this internal rotation piece, and this second buckle card is established in this draw-in groove.

The utility model discloses an outer rotating member accessible linkage structure and recess for clamping device of fixed bolster drive interior rotating member and rotate in step, and then order about interior rotating member and outer rotating member and remove along axial direction, with the extrusion or loosen fastening connection spare, when interior rotating member extrusion fastening connection spare to clamping state, continue to rotate outer rotating member, the linkage structure is compressed, take place relative rotation between outer rotating member and the interior rotating member this moment, thereby avoid continuing to rotate outer rotating member under fastening connection spare has been in clamping state's the condition, lead to fastening connection spare to be extruded excessively and damage.

Drawings

Fig. 1 is a schematic structural view of a clamping device for a fixing bracket according to a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a clamping device for a fixing bracket according to a first embodiment of the present invention.

Fig. 3 is a partially disassembled structural schematic diagram of the clamping device for fixing the bracket according to the first embodiment of the present invention.

Fig. 4 is an exploded view of the clamping device for fixing a bracket according to the first embodiment of the present invention.

Fig. 5 is an exploded view of a clamping device for a fixing bracket according to a second embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of a clamping device for a fixing bracket according to a second embodiment of the present invention.

Detailed Description

First embodiment

Fig. 1 is a structural schematic diagram of a clamping device for a fixed bolster of the utility model discloses a first embodiment, fig. 2 is the utility model discloses a sectional structure schematic diagram of a clamping device for a fixed bolster of first embodiment, fig. 3 is the utility model discloses a local split structural schematic diagram of a clamping device for a fixed bolster of first embodiment, fig. 4 is the utility model discloses a clamping device's for a fixed bolster explosion structure schematic diagram of first embodiment.

Referring to fig. 1 to 4, the clamping device for fixing a bracket includes an inner rotating member 12, an outer rotating member 13, and a fastening connector for connecting and fixing the bracket, wherein the inner rotating member 12 is provided with a first through hole 104, the inner rotating member 12 is sleeved on the fastening connector through the first through hole 104, the inner rotating member 12 is connected with the fastening connector through a screw thread, the outer rotating member 13 is provided with a second through hole 106, and the outer rotating member 13 is sleeved on the inner rotating member 12 through the second through hole 106.

The outer wall of interior rotating member 12 is equipped with brace table 121 along circumference, and the upper surface of brace table 121 is equipped with a plurality of recesses 201 of arranging in succession, is equipped with linkage 131 in the outer rotating member 13, and linkage 131 inclines to set up, and linkage 131 includes first elastic component 132 and supports and lean on piece 133, and the one end of first elastic component 132 is fixed in outer rotating member 13, and the other end of first elastic component 132 will support and lean on piece 133 extrusion in recess 201 along the direction of inclining in the clamping device axis.

When the outer rotating member 13 is rotated, the outer rotating member 13 can drive the inner rotating member 12 to rotate synchronously by a first acting force generated between the abutting block 133 and the groove 201 of the linkage structure 131, when a second acting force for rotating the outer rotating member 13 is greater than the first acting force, the abutting block 133 moves into another adjacent groove 201, and the outer rotating member 13 and the inner rotating member 12 move relatively. It is worth mentioning that the upper surface and the lower surface of the supporting table 121 are both perpendicular to the axial direction of the clamping device, wherein the upper surface of the supporting table 121 is close to one end of the fastening connector for fixing the mobile terminal bracket, and the lower surface of the supporting table 121 is close to one end of the fastening connector for clamping or hooking the blade of the automobile air outlet.

The utility model discloses an outer rotating member 13 accessible linkage structure 131 and recess 201 drive interior rotating member 12 and rotate in step, and then order about interior rotating member 12 and outer rotating member 13 and remove along axial direction, with the extrusion or loosen fastening connection spare, when interior rotating member 12 extrudees fastening connection spare to clamping state, continue to rotate outer rotating member 13, linkage structure 131 is compressed, the second effort that rotates outer rotating member 13 this moment is greater than first effort (first effort is for the frictional force that produces between the cell wall of leaning on piece 133 and recess 201), the elasticity of first elastic component 132 is overcome to outer rotating member 13, make and take place relative rotation between outer rotating member 13 and the interior rotating member 12, thereby avoid continuing to rotate outer rotating member 13 under the condition that fastening connection spare has been in clamping state, lead to fastening connection spare to be extruded excessively and damage.

It is worth mentioning that, because linkage 131 sets up in an inclined manner, the effort that rotates outer rotating member 13 clockwise is different from the effort that rotates outer rotating member 13 counterclockwise, for example, outer rotating member 13 can drive interior rotating member 12 and rotate clockwise, relative motion can take place for outer rotating member 13 and interior rotating member 12 this moment, when outer rotating member 13 rotates counterclockwise, relative motion can not take place for outer rotating member 13 and interior rotating member 12, outer rotating member 13 and interior rotating member 12 can only rotate counterclockwise in step promptly, make interior rotating member 12 break away from the fastening connection spare.

Further, the angle between the axis of the first elastic member 132 and the axis of the clamping device is less than 90 °, preferably, the angle is 25 ° to 45 °.

Further, the outer wall of the outer rotating member 13 is provided with an operating block 135, the operating block 135 is located above the supporting table 121, a containing hole 202 is formed in the operating block 135, the containing hole 202 extends in a direction oblique to the axis of the clamping device, that is, a projection of the axis of the containing hole 202 in a plane where the axis of the clamping device is located can intersect with the axis of the clamping device in the plane, and the linkage structure 131 is installed in the containing hole 202. In this embodiment, two opposite sides of the outer rotating member 13 are respectively provided with an operating block 135, and each operating block 135 is internally provided with a linkage structure 131.

Further, the linkage structure 131 further includes a fastener 134, the fastener 134 is fixed in the accommodating hole 202, one end of the first elastic member 132 is fixed to the fastener 134, and the other end of the first elastic member 132 is connected to the abutting block 133. In the present embodiment, the first elastic element 132 is a spring, but not limited thereto.

Further, the groove 201 includes a first wall 201a and a second wall 201b, and the slopes of the first wall 201a and the second wall 201b are equal. In this embodiment, the abutting block 133 contacts with the first wall surface 201a or the second wall surface 201b of the groove 201, when the abutting block 133 contacts with the first wall surface 201a and the inner rotating member 12 presses the fastening connector to the clamping state, the outer rotating member 13 continues to rotate, the abutting block 133 slides relative to the first wall surface 201a, the first elastic member 132 is compressed, the second acting force of the outer rotating member 13 at this time is greater than the first acting force (the first acting force is a friction force generated between the abutting block 133 and the first wall surface 201 a), and the outer rotating member 13 overcomes the elastic force of the first elastic member 132 to enable the outer rotating member 13 and the inner rotating member 12 to relatively rotate, so as to avoid the fastening connector being damaged due to excessive pressing caused by the continuous rotation of the outer rotating member 13 when the fastening connector is already in the clamping state.

Further, the first wall surface 201a and the second wall surface 201b are cambered surfaces, and the first wall surface 201a and the second wall surface 201b are transitionally connected through a curved surface; preferably, the first wall surface 201a and the second wall surface 201b are, for example, circular arc surfaces or elliptical arc surfaces.

Further, the abutting block 133 is provided with a contact surface 133a contacting with the first wall surface 201a and/or the second wall surface 201b, and the contact surface 133a is a cambered surface. In this embodiment, the abutment block 133 is spherical, or elliptical.

Further, the end of the outer rotating member 13 is provided with a first buckle (not shown), the first buckle is located on the hole wall of the second through hole 106, and the first buckle is clamped on the lower surface of the supporting platform 121, as shown in fig. 2 and 3.

Further, the fastening connector comprises a first clamping arm 141, a second clamping arm 146 and a connector 11 for connecting the bracket, an external thread 113 is arranged on the outer wall of the connector 11, an internal thread 123 is arranged on the hole wall of the first through hole 104, the internal rotating member 12 is connected to the connector 11 through the internal thread 123 and the external thread 113 in a matching manner, the upper ends of the first clamping arm 141 and the second clamping arm 146 are respectively connected with the connector 11 in a rotating manner, and the lower ends of the first clamping arm 141 and the second clamping arm 146 are driven by the internal rotating member 12 to approach each other to clamp an object.

Further, an accommodating cavity (not shown) is arranged below the connecting member 11, the upper ends of the first clamping arm 141 and the second clamping arm 146 are respectively rotatably arranged in the accommodating cavity 101 through a first rotating shaft 114a and a second rotating shaft 114b, and the first rotating shaft 114a is parallel to the second rotating shaft 114 b; the side of the first clamping arm 141 facing away from the second clamping arm 146 is provided with a first pressing portion 143, and the side of the second clamping arm 146 facing away from the first clamping arm 141 is provided with a second pressing portion 148, so that when the outer rotating element 13 is rotated to move the inner rotating element 12, the inner rotating element 12 can abut against the first pressing portion 143 and the second pressing portion 148, and thus the lower ends of the first clamping arm 141 and the second clamping arm 146 are driven to approach each other. In other embodiments, the upper ends of the first and second clamping arms 141 and 146 may be rotatably disposed in the accommodating cavity 101 through the same rotating shaft.

Further, the first clamping arm 141 includes a first rotating portion 142, a first pressing portion 143, and a first clamping portion 144, which are connected in sequence, the second clamping arm 146 includes a second rotating portion 147, a second pressing portion 148, and a second clamping portion 149, which are connected in sequence, the first rotating portion 142 and the second rotating portion 147 are located in the accommodating cavity, the first rotating portion 142 is connected to the first rotating shaft 114a, the second rotating portion 147 is connected to the second rotating shaft 114b, and when the outer rotating member 13 is rotated to move the inner rotating member 12, the inner rotating member 12 can abut against the first pressing portion 143 and the second pressing portion 148; when the outer rotating member 13 is rotated continuously, the inner rotating member 12 is driven to press the first pressing portion 143 and the second pressing portion 148, so that the first clamping portion 144 and the second clamping portion 149 are pressed toward each other, and the fastening connector is clamped.

Further, the fastening connector further includes a second elastic member (not shown), and both ends of the second elastic member abut against the first and second clamp arms 141 and 146, respectively.

Further, a first mounting hole 107 is formed at a side of the first rotating portion 142 close to the second rotating portion 147, a second mounting hole (not shown) is formed at a side of the second rotating portion 147 close to the first rotating portion 142, one end of the second elastic member is disposed in the first mounting hole 107, and the other end of the second elastic member is disposed in the second mounting hole. When the first clamping portion 144 and the second clamping portion 149 approach each other under the extrusion, the second elastic member elastically deforms and respectively provides the first clamping arm 141 and the second clamping arm 146 with elastic forces in directions opposite to the extrusion direction; when the outer rotating piece 13 is rotated to enable the inner rotating piece 12 to move towards the direction far away from the first extrusion part 143 and the second extrusion part 148, the inner rotating piece 12 releases the extrusion on the first extrusion part 143 and the second extrusion part 148, the first clamping part 144 and the second clamping part 149 are not subjected to extrusion force close to each other any more, and the fastening connecting piece is in a loosening state; meanwhile, under the elastic action of the second elastic member, the first clamping portion 144 and the second clamping portion 149 are away from each other, so that the next clamping is facilitated, that is, the second elastic member is used for keeping the first clamping arm 141 and the second clamping arm 146 open, and a user can conveniently stretch the first clamping arm 141 and the second clamping arm 146 into the blades of the air outlet of the automobile.

Further, the lower end of the first clamping arm 141 and/or the second clamping arm 146 is provided with a hook 14a for hooking an object. Specifically, the ends of the first holding portion 144 and the second holding portion 149 are provided with hooks 14a for hooking an object, the two hooks 14a are arranged in a staggered manner, and an included angle is formed between the hook 14a and the first holding portion 144 and the second holding portion 149, and preferably, the included angle is smaller than or equal to 90 °. In this embodiment, the hook 14a can be hooked on a blade of the air outlet of the automobile, so as to conveniently fix the clamping device for fixing the bracket.

Furthermore, the clamping device further comprises a supporting member 17, a third through hole 109 is formed in the supporting member 17, a second buckle 171 is arranged on the hole wall of the third through hole 109, the supporting member 17 is sleeved on the inner rotating member 12 through the third through hole 109, a clamping groove (not shown) is formed in the inner rotating member 12, and the second buckle 171 is clamped in the clamping groove. In this embodiment, the supporting member 17 can move synchronously with the inner rotating member 12, and when the fastening member is in the clamping state, the supporting member 17 can support the clamping device to keep the clamping device stable, for example, when the clamping assembly 14 clamps the blades of the automobile air outlet, the supporting member 17 contacts with the periphery of the clamped blades of the automobile air outlet to prevent the clamping device from shaking together with the blades after clamping the blades.

Further, the locking groove is an annular groove, and the locking groove may not surround the inner rotating member 12, but only a groove corresponding to the second latch 171 is provided. Alternatively, the locking groove may be disposed on the hole wall of the third through hole 109, and the second buckle 171 may be disposed on the outer wall of the inner rotating member 12, as long as it is ensured that the support member 17 is in clamping fit with the inner rotating member 12. Alternatively, the supporting member 17 and the inner rotating member 12 may be connected by other means such as insertion, screw connection, and integral molding, as long as the supporting member 17 can support the periphery of the clamped portion to keep the clamping device stable when the fastening connector is in the clamping state.

Furthermore, the support member 17 is further provided with a non-slip mat (not shown), the non-slip mat is fixed on a support surface (the support surface is a surface of the blade close to the air outlet of the automobile) of the support member 17, and the non-slip mat is in contact with the periphery of the clamped position, so that the supported object of the support member 17 can be effectively prevented from being scratched. In this embodiment, the anti-slip pad is made of rubber blocks, abrasive pieces, and any components or structures that can prevent slipping, but not limited thereto.

Further, the connecting member 11 includes a first connecting portion 111 and a second connecting portion 112, the second connecting portion 112 is used for connecting a bracket, one end of the first connecting portion 111 is connected with the second connecting portion 112, an external thread 113 is disposed on an outer wall of the first connecting portion 111, and the inner rotating member 12 is connected to the first connecting portion 111 through an internal thread 123 and the external thread 113 in a matching manner. In this embodiment, the cradle is a mobile terminal cradle, a clamp, a wireless charger, but not limited thereto.

Furthermore, a fixing column 111a is arranged at the top of the first connecting portion 111, a fixing hole (not shown) is arranged on the second connecting portion 112, the fixing column 111a is arranged in the fixing hole, and the second connecting portion 112 is fixed on the fixing column 111a through a screw, so that the first connecting portion 111 and the second connecting portion 112 are detachably connected. The first connection portion 111 and the second connection portion 112 may be connected by a snap, a welding, or a screw connection, which is not limited thereto.

Further, the second connecting portion 112 is substantially a sphere, and the second connecting portion 112 is hinged to the bracket, so that the bracket can rotate relative to the second connecting portion 112, thereby facilitating the adjustment of the angle of the bracket. Preferably, the second connecting portion 112 is a universal ball, and the second connecting portion 112 is matched with a universal ball hole on the back of the bracket to fix the bracket.

In another preferred embodiment, the second connecting portion 112 is a suction cup, a clamp, a buckle, etc. and can be directly connected to the bracket by clamping, absorbing, etc. In another preferred embodiment, the fastening connector includes a fixing hook (not shown) and a connecting member 11 for connecting to the bracket, the connecting member 11 is provided with an external thread 113 on an outer wall thereof, the first through hole 104 is provided with an internal thread 123 on a hole wall thereof, the inner rotating member 12 is connected to the connecting member 11 by the internal thread 123 and the external thread 113 in a matching manner, an upper end of the fixing hook is fixedly connected to the connecting member 11, and a lower end of the fixing hook is driven by the inner rotating member 12 to approach a lower surface of the inner rotating member 12 to clamp an object. It should be mentioned that the fastening connector of the present embodiment includes a first clamping arm 141 and a second clamping arm 141, and only the fixing hook is used to hook an object, for example, a blade of an air outlet of an automobile.

Second embodiment

Fig. 5 is an exploded schematic view of a clamping device for a fixed bracket according to a second embodiment of the present invention, and fig. 6 is a schematic view of a cross-sectional structure of a clamping device for a fixed bracket according to a second embodiment of the present invention, as shown in fig. 5 and fig. 6, the clamping device for a fixed bracket of the present embodiment is substantially the same as the clamping device for a fixed bracket according to the first embodiment, and the difference lies in that the shape of the abutment block 133 and the groove 201 are different.

Specifically, the first wall surface 201a and the second wall surface 201b of the recess 201 are flat surfaces, and the contact surface 133a of the abutting block 133 is a flat surface. The abutting block 133 may have any shape as long as it is ensured that the contact surface 133a with the groove 201 is a plane, and preferably, the abutting block 133 has a rectangular shape. In the present embodiment, the cross section of the groove 201 is an equilateral triangle, but not limited thereto.

The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims (10)

1. A clamping device for fixing a bracket is characterized by comprising an inner rotating piece, an outer rotating piece and a fastening connecting piece for connecting and fixing the bracket, wherein the inner rotating piece is provided with a first through hole, the inner rotating piece is sleeved on the fastening connecting piece through the first through hole, the inner rotating piece is in threaded connection with the fastening connecting piece, the outer rotating piece is provided with a second through hole, and the outer rotating piece is sleeved on the inner rotating piece through the second through hole;

a supporting table is arranged on the outer wall of the inner rotating piece along the circumferential direction, a plurality of continuously arranged grooves are formed in the upper surface of the supporting table, a linkage structure is arranged in the outer rotating piece and comprises a first elastic piece and a propping block, one end of the first elastic piece is fixed in the outer rotating piece, and the propping block is extruded in the groove by the other end of the first elastic piece along the direction inclined to the axis of the clamping device;

when the outer rotating piece is rotated, the outer rotating piece can drive the inner rotating piece to synchronously rotate through a first acting force generated between the linkage structure and the groove, when a second acting force for rotating the outer rotating piece is larger than the first acting force, the abutting block moves into another adjacent groove, and the outer rotating piece and the inner rotating piece move relatively.

2. The clamping device for fixing a bracket as claimed in claim 1, wherein the outer wall of the outer rotating member is provided with an operating block, the operating block is located above the supporting platform, the operating block is provided with a receiving hole therein, the receiving hole extends in a direction oblique to the axis of the clamping device, and the linkage structure is installed in the receiving hole.

3. The clip assembly of claim 2 in which the recess comprises a first wall and a second wall, the first wall and the second wall being of equal slope.

4. The clamping device for fixing a bracket as claimed in claim 3, wherein the first wall surface and the second wall surface are cambered surfaces, and the first wall surface and the second wall surface are connected by a curved surface transition; alternatively, the first wall surface and the second wall surface are flat surfaces.

5. The clamping device for fixing a bracket as claimed in claim 4, wherein the abutting block is provided with a contact surface which is contacted with the first wall surface and/or the second wall surface, and the contact surface is a cambered surface or a plane surface.

6. The clamping device for fixing a bracket as claimed in any one of claims 1 to 5, wherein the fastening connector comprises a first clamping arm, a second clamping arm and a connector for connecting the bracket, the connector is provided with an external thread on an outer wall thereof, the first through hole is provided with an internal thread on a wall thereof, the internal rotator is connected to the connector through the internal thread and the external thread, the upper ends of the first clamping arm and the second clamping arm are rotatably connected to the connector, respectively, and the lower ends of the first clamping arm and the second clamping arm are driven by the internal rotator to approach each other to clamp an object.

7. The clamping device for fixing a bracket as claimed in claim 6, wherein a receiving cavity is provided below the connecting member, upper ends of the first clamping arm and the second clamping arm are rotatably provided in the receiving cavity by a first rotating shaft and a second rotating shaft respectively, and the first rotating shaft is parallel to the second rotating shaft; the side of the first clamping arm back to the second clamping arm is provided with a first extrusion part, the side of the second clamping arm back to the first clamping arm is provided with a second extrusion part, and when the outer rotating part is rotated to enable the inner rotating part to move, the inner rotating part can be abutted against the first extrusion part and the second extrusion part, so that the lower ends of the first clamping arm and the second clamping arm are driven to be close to each other.

8. The clamping device for fixing a bracket as claimed in claim 6, wherein the fastening connector further comprises a second elastic member, and both ends of the second elastic member abut against the first clamping arm and the second clamping arm, respectively.

9. The clamping device for fixing a bracket as claimed in any one of claims 1 to 5, wherein the fastening connector comprises a fixing hook and a connector for connecting to the bracket, the connector has an external thread on an outer wall thereof, the first through hole has an internal thread on a wall thereof, the inner rotating member is connected to the connector by the internal thread and the external thread, the fixing hook has an upper end fixedly connected to the connector, and a lower end for clamping an object by approaching a lower surface of the inner rotating member under the driving of the inner rotating member.

10. The clamping device for fixing a bracket as claimed in any one of claims 1 to 5, wherein the end of the outer rotating member is provided with a first buckle, the first buckle is located on the wall of the second through hole, and the first buckle is clamped on the lower surface of the supporting platform; the clamping device further comprises a supporting piece, a third through hole is formed in the supporting piece, a second buckle is arranged on the hole wall of the third through hole, the supporting piece is sleeved on the inner rotating piece through the third through hole, a clamping groove is formed in the inner rotating piece, and the second buckle is clamped in the clamping groove.

Images