Vehicle tail support

Abstract

The invention relates to an automobile auxiliary support, in particular to an automobile tail support, which comprises a connecting pipe, a connecting rod, a connecting rod, a connecting rod, a connecting rod and a connecting rod, and is characterized in that the connecting pipe is mounted on a square-opening base of an automobile tail; the tensioning device is installed on the connecting pipe and used for being tensioned on the square opening base. The anti-falling device is mounted on the connecting pipe and is used for being inserted into the connecting through hole of the square-opening base; the connecting bracket is mounted on the connecting pipe; the fixed bracket is rotationally mounted on the connecting bracket; and the folding device is installed on the fixed support, movably connected with the connecting support and used for adjusting the angle between the fixed support and the connecting support. The vehicle tail support is convenient to disassemble and assemble, convenient to fold, capable of being provided with various loading devices, simple and compact in overall structure and convenient to store.

Description

Technical Field

[0001] The invention relates to an automobile auxiliary bracket, in particular to a rear bracket. Background Art

[0002] In order to solve the problem of insufficient space in the trunk of a car, a bracket is usually installed on the roof or the rear of the car. The bracket installed at the rear of the car is usually installed on a square base at the rear of the car, such as a dual-purpose luggage rack disclosed in CN207931617U, which is inserted into the square base through a second fastening connection when connected to the rear of the car, and then a pin or a screw is passed through the connection hole of the square base and the through hole on the second fastening connection to achieve the fixation of the two. Since the second fastening connection is installed on the luggage rack body, it is inconvenient to insert the second fastening connection into the square base. At the same time, it is very inconvenient to install the pin or screw due to the obstruction of the luggage rack body. The overall disassembly and assembly is inconvenient, time-consuming and laborious. At the same time, the second fastening connection can only be installed on the luggage rack body, and other devices cannot be installed. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a rear bracket which is easy to disassemble and assemble and can be equipped with a variety of loading devices. The specific technical solution is as follows:

[0004] A rear-end bracket comprises: a connecting tube, which is used to be installed on a square-mouth base at the rear of the vehicle; a tensioning device, which is installed on the connecting tube and is used to tighten the square-mouth base; an anti-slip device, which is installed on the connecting tube and is used to be inserted into a connecting through hole of the square-mouth base; a connecting bracket, which is installed on the connecting tube; a fixed bracket, which is rotatably installed on the connecting bracket; and a folding device, which is installed on the fixed bracket and is movably connected to the connecting bracket and is used to adjust the angle between the fixed bracket and the connecting bracket.

[0005] Preferably, the tensioning device includes: a tensioning seat, which is movably inserted into the connecting tube, a tensioning groove is provided on the tensioning seat, and a tensioning inclined surface is provided on one side of the tensioning groove; a tensioning block, which is movably inserted into the tensioning slot on the connecting tube, the tensioning block is provided with a clamping inclined surface, the tensioning block is movably inserted into the tensioning groove, and the tensioning block is provided with a clamping inclined surface that is movably pressed against the tensioning inclined surface; a tensioning rod, which is fixed on the tensioning seat; and a tensioning assembly, which is connected to the tensioning rod and is used to drive the tensioning seat through the tensioning rod to push the tensioning block to be pressed tightly on the square mouth base.

[0006] Preferably, the tensioning assembly includes one of a tensioning screw, a tensioning handle or a cam handle.

[0007] Preferably, the tensioning slot is located on an edge of the connecting pipe.

[0008] Preferably, the anti-dropout device includes: an anti-dropout plate, which is rotatably installed inside the connecting tube; a pin, which is fixed on the anti-dropout plate and movably inserted into the connecting tube; a torsion spring, which is respectively connected to the connecting tube and the anti-dropout plate, and is used to make the pin extend out of the connecting tube; and an anti-dropout handle, which is fixed on the anti-dropout plate and movably inserted into the connecting tube, and the anti-dropout handle is used to rotate the anti-dropout plate to retract the pin into the connecting tube.

[0009] Furthermore, it also includes a lock head, which is installed on the anti-drop handle and connected to the connecting pipe, and the lock head is used to lock the anti-drop handle on the connecting pipe.

[0010] Preferably, the connecting bracket is provided with a plurality of positioning grooves; the folding device comprises: a locking device, which is slidably mounted on the fixed bracket and is arranged opposite to the plurality of positioning grooves on the connecting bracket, and is used to be inserted into the positioning groove to locate the position of the fixed bracket; and an unlocking device, which is slidably mounted on the fixed bracket and is located at the end of the fixed bracket, and is used to drive the locking device to slide out of the positioning groove.

[0011] Furthermore, the locking device includes: a locking rod, which is slidably inserted into the fixed bracket and is arranged opposite to the positioning groove; and a locking spring, which is respectively connected to the locking rod and the fixed bracket and is used to insert the locking rod into the positioning groove.

[0012] Wherein, the unlocking device comprises: an unlocking handle, which is slidably mounted on the fixed bracket; and an unlocking connecting rod, which is respectively connected to the locking rod and the unlocking handle.

[0013] Furthermore, it also includes: a sliding seat, which is fixed on the fixed bracket, and the sliding seat is provided with a first sliding groove arranged opposite to the positioning groove, and the locking rod is slidably inserted in the first sliding groove; and a positioning plate, which is installed on the sliding seat, and the positioning plate is provided with a second sliding groove, and the second sliding groove is communicated with the first sliding groove, and is used to limit the position of the locking rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The rear-end bracket provided by the present invention can be conveniently assembled and disassembled, and can be conveniently folded, and can also be installed with a variety of loading devices. The overall structure is simple, compact, and convenient to store. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a rear-end bracket;

[0017] Figure 2 It is a cross-sectional view of a rear bracket of a vehicle;

[0018] Figure 3 It is a schematic diagram of the structure of the anti-drop device and the tensioning device installed on the connecting pipe;

[0019] Figure 4 It is a schematic diagram of the connecting branch pipe installed on the square base;

[0020] Figure 5 It is a structural schematic diagram of the anti-slip device;

[0021] Figure 6 It is a structural schematic diagram of the tensioning device;

[0022] Figure 7 It is the assembly diagram of the tensioning seat and the tensioning block;

[0023] Figure 8 yes Figure 7 A cross-sectional view of

[0024] Fig. 9 It is a structural schematic diagram of the tensioning block;

[0025] Fig.10 It is a structural schematic diagram of the fixed bracket and the folding device assembly;

[0026] Fig.11 yes Fig.10 Schematic diagram of the structure after the bracket base is hidden;

[0027] Fig.12 is a schematic diagram of the structure of the fixed bracket;

[0028] Fig.13 is a schematic diagram of the structure of the folding device;

[0029] Fig.14 It is a schematic diagram of the connecting pipe being installed on the square-mouth base;

[0030] Fig.15 It is a schematic diagram of the pin being inserted into the square-mouth base;

[0031] Fig.16 It is a schematic diagram of the pin being inserted into the connecting through hole;

[0032] Fig.17 It is a schematic diagram of rotating the anti-drop handle to make the pin leave the connecting through hole and pull out the connecting pipe;

[0033] Fig.18 is a schematic diagram of the structure of Embodiment 3;

[0034] Fig.19 is a cross-sectional view of embodiment 3;

[0035] Fig. 20 is a schematic structural diagram of Embodiment 4;

[0036] Fig.21 is a cross-sectional view of Embodiment 4;

[0037] Fig. 22 is a schematic diagram of a fixed bracket in an unfolded state;

[0038] Fig.23 is a schematic diagram of the fixed bracket in a folded state;

[0039] Fig.24 It is a schematic diagram of fixing the bracket on the open trunk of the car;

[0040] Fig.25 is a schematic diagram of a bicycle rack mounted on a fixed bracket.

[0041] Fig.26 It is a side view of the tensioner seat;

[0042] Fig. 27 It is a cross-sectional view of the tensioning device installed on the connecting pipe;

[0043] Fig.28 It is a three-dimensional diagram of the connecting pipe being installed on the square-mouth base through the tensioning device;

[0044] Fig.29 yes Fig.28 A cross-sectional view of

[0045] Fig.30 yes Fig.28 Side view of. DETAILED DESCRIPTION

[0046] The present invention will be further described with reference to the accompanying drawings.

[0047] Embodiment 1

[0048] like Figures 1 to 30 As shown, a rear bracket of a vehicle comprises a connecting pipe 1, a tensioning device 2, an anti-slipping device 3, a connecting bracket 4, a fixing bracket 5 and a folding device. The connecting pipe 1 is used to be installed on a square base 91 of the rear of the vehicle; the tensioning device 2 is installed on the connecting pipe 1 and is used to be tightened on the square base 91; the anti-slipping device 3 is installed on the connecting pipe 1 and is used to be inserted into a connecting through hole 911 of the square base 91; the connecting bracket 4 is installed on the connecting pipe 1; the fixing bracket 5 is rotatably installed on the connecting bracket 4; the folding device is installed on the fixing bracket 5 and is movably connected to the connecting bracket 4, and is used to adjust the angle between the fixing bracket 5 and the connecting bracket 4.

[0049] like Figures 1 to 3 As shown, the connecting tube 1 is a square tube and matches the square hole of the square base 91. A pin hole 11 and a handle hole 12 are provided on one side of the connecting tube 1. The connecting bracket 4 is a U-shaped structure, the connecting bracket 4 is welded to one end of the connecting tube 1, and the other end of the connecting tube 1 is used to be inserted into the square base 91. The connecting bracket 4 is provided with a first positioning groove 41, a second positioning groove 42 and a third positioning groove 43 in sequence, the first positioning groove 41 is used for folding, the second positioning groove 42 is used for unfolding the fixing bracket 5, and the third positioning groove 43 is used for lowering the fixing bracket 5 to the maximum angle. The end of the connecting bracket is arc-shaped, and the three positioning grooves are all located on the arc surface.

[0050] like Figure 3 and Figure 5 As shown, the anti-slip device 3 includes an anti-slip plate 32, a pin 31, a torsion spring 33 and an anti-slip handle 35. The pin 31 is movably inserted into the pin hole 11. The pin 31 and the anti-slip handle 35 are respectively fixed at both ends of the anti-slip plate 32, and the anti-slip plate 32 is U-shaped to ensure strength and is not easily deformed. The anti-slip plate 32 is rotatably installed inside the connecting pipe 1 through the first connecting shaft 34, and the first connecting shaft 34 is located on one side of the anti-slip handle 35, and the anti-slip handle 35 is movably inserted into the handle hole 12. The torsion spring 33 is movably inserted on the first connecting shaft 34, and the two torsion arms of the torsion spring 33 are respectively against the anti-slip plate 32 and the connecting pipe 1, which are used to press the anti-slip plate 32 on the side of the connecting pipe 1, so that the pin 31 is in a state of extending out of the connecting pipe 1, and the anti-slip handle 35 is used to rotate the anti-slip plate 32 to retract the pin 31 into the connecting pipe 1.

[0051] like Figures 14 to 16 As shown, when it is installed in the rear of the car, first insert the end of the connecting pipe 1 into the square base 91, then turn the anti-dropping handle 35 outward to retract the pin 31 into the inside of the connecting pipe 1, and then continue to insert the connecting pipe 1 until the pin 31 completely enters the square base 91, then release the anti-dropping handle 35, the pin 31 is pressed against the side wall of the square base 91 under the action of the torsion spring 33, and continue to push the connecting pipe 1 into the inside of the square base 91, when the pin 31 is opposite to the connecting through hole 911 on the square base 91, the pin 31 is inserted into the connecting through hole 911 under the action of the torsion spring 33, so that the connecting pipe 1 is installed, and the pin 31 locks the connecting pipe 1 on the square base 91.

[0052] like Fig.17 As shown, when disassembling, the anti-drop handle 35 is rotated outward to retract the pin 31 into the connecting pipe 1, and then the connecting pipe 1 is pulled outward.

[0053] The torsion spring 33 is used to automatically insert the pin 31 into the connecting through hole 911 of the square base 91, so that the installation is convenient.

[0054] like Figure 3 , Figures 6 to 13 As shown, the tensioning device 2 is installed at the end of the connecting pipe 1 and is used to tighten on the square base 91. The tensioning device 2 realizes the fixing of the connecting pipe 1 on the square base 91, thereby improving the reliability and stability of the connection. Specifically, the tensioning device 2 includes a tensioning seat 22, a tensioning block 21, a tensioning rod 23 and a tensioning assembly. The tensioning seat 22 is movably inserted into the connecting pipe 1 and is located on the diagonal line of the connecting pipe 1. A tensioning groove 221 is provided on the top of the tensioning seat 22, and a tensioning inclined surface 222 is provided on one side of the tensioning groove 221; one end of the tensioning seat 22 is fixedly connected to the tensioning rod 23. There are also tensioning side plates 223 on both sides of the tensioning seat 22, and the tensioning side plates 223 are also located on both sides of the tensioning groove 221. The tension block 21 is movably inserted into the tension slot 15 on the connecting pipe 1 and the tension slot 221 of the tension seat 22. The tension block 21 is provided with a pressing inclined surface 211, and the pressing inclined surface 211 is movably against the tightening inclined surface 222. The tightening inclined surface 221 and the pressing inclined surface 211 can push the tension block 21 to protrude to the outside of the connecting pipe 1, and then be pressed against the inside of the square base 91. An anti-slip groove 223 is provided on the other side of the tightening groove 221. An anti-slip block 212 is provided on the tension block 21, and the anti-slip block 212 is movably inserted into the anti-slip groove 223. The anti-slip block 212 prevents the tension block 21 from escaping from the tension slot 15, and the tension slot 221 is used to accommodate the anti-slip block 212. One end of the tension rod 23 is connected to the tension seat 22, and the other end is movably inserted into the first guide plate 29. The first guide plate 29 is fixed on the end plate 10, and the end plate 10 is fixed to the other end of the connecting pipe 1. The tensioning assembly includes a tensioning screw 24, which is movably inserted into the end plate 10 at the end of the connecting pipe 1, and is connected to the threaded hole at the end of the tensioning rod 23. The tensioning rod 23 is moved by rotating the tensioning screw 24, thereby loosening and tightening the tensioning block 21. The tensioning screw 24 can be a hexagon socket screw.

[0055] The top of the tension seat 22 is symmetrically provided with upper sliding slopes 226 on both sides, and the bottom of the tension seat 22 is symmetrically provided with lower sliding slopes 225, and both the upper sliding slopes 226 and the lower sliding slopes 225 slide against the inner wall of the connecting tube 1. Both ends of the tension seat 22 are inserted into the diagonal of the connecting tube 1, which can not only realize the positioning of the tension seat 2 and simplify the structure, but also the tension block 21 is tightened on the corners of the square mouth base 91, which is not easy to cause deformation of the square mouth base 91. The upper sliding slope 226 and the lower sliding slope 225 can realize positioning, and at the same time can increase the contact area and reduce the deformation of the connecting tube 1.

[0056] The other side of the tension block 21 is provided with an anti-dropout inclined surface 213 inclined outward. The anti-dropout inclined surface 213 can be used together with the anti-dropout block 212 to restrict the tension block 21 in the tensioning slot 15 from both sides of the tension block 21 to prevent the tension block 21 from falling off.

[0057] The tensioning slot 15 is located on the edge of the connecting pipe 1 , and the tensioning block 21 matches the inner corner of the square base 91 . The tensioning block 21 is pressed on the inner corner to ensure the compression strength and prevent the square base 91 from deforming.

[0058] like Figures 27 to 30 As shown, when tightening, the tightening screw 24 is turned forward by a wrench, and the tightening screw 24 drives the tightening seat 22 through the tightening rod 23 to press the tightening block 21. The tightening block 21 is pressed inside the square base 91 under the action of the tightening inclined surface 221 and the pressing inclined surface 211.

[0059] like Figures 27 to 30 As shown, when loosening, the tensioning screw 24 is rotated in the opposite direction by a wrench, the tensioning screw 24 loosens the tensioning rod 23, the tensioning seat 22 moves toward the end of the connecting pipe 1, the tensioning seat 22 loosens the tensioning block 21, the tensioning block 21 retracts into the interior of the connecting pipe 1, and then the connecting pipe 1 can be pulled out.

[0060] like Figures 10 to 13 As shown, the fixed bracket 5 includes a bracket base 52 and a bracket top plate 51. The bracket base 52 is formed by stamping a plate. The bracket base 52 is a U-shaped structure with a mounting groove 521 formed inside. Connecting plates 525 are symmetrically arranged on both sides of the bracket base 52. The connecting plates 525 increase the strength of the bracket base 52 and facilitate connection with the bracket top plate 51. A rotation groove 523 is arranged at one end of the bracket base 52, and a handle groove 522 is arranged at the other end. The rotation groove 523 and the handle groove 522 are both connected to the mounting groove 521. A sliding seat 53 and a positioning plate 54 are also arranged inside the fixed bracket 5. The sliding seat 53 is fixed on both sides of the rotating groove 523, and the positioning plate 54 is fixed on both sides inside the sliding seat 53. The sliding seat 53 is provided with a first waist-shaped sliding groove 531, and the positioning plate 54 is provided with a second waist-shaped sliding groove 541. The second sliding groove 541 is communicated with the first sliding groove 531, and the first sliding groove 531 and the second sliding groove 541 are both open grooves. The first sliding groove 531 and the second sliding groove 541 form a complete waist-shaped groove.

[0061] like Fig.11 As shown, support side plates 511 are symmetrically arranged on both sides of the bracket top plate 51, and a support front plate 512 is arranged at one end of the bracket top plate 51. The support side plates 511 and the support front plate 512 increase the strength of the bracket top plate 51. The bracket top plate 51 and the bracket base 52 are both formed by stamping of plate materials to reduce weight, thereby making the disassembly and assembly of the folding frame bracket labor-saving. The connecting bracket 4 is rotatably installed in the rotating groove 523 through the second rotating shaft 40.

[0062] The positioning plate 54 is a plastic part, which has a certain damping effect and can improve the hand feel. At the same time, it can reduce the gap and prevent the connecting bracket 4 and the bracket base 52 from rubbing against each other.

[0063] like Figures 10 to 13 As shown, the locking device includes a locking rod 61 and a locking spring 62. The two ends of the locking rod 61 are respectively slidably inserted into the first sliding groove 531 and the second sliding groove 541 on the sliding seat 53 and the positioning plate 54, and the locking rod 61 matches the first sliding groove 531 and the second sliding groove 541. The positioning plate 54 is provided with a second sliding groove 541 for limiting the position of the locking rod 61. The two ends of the locking spring 62 are respectively against the locking rod 61 and the sliding seat 53, and are used to press the locking rod 61 into the positioning groove.

[0064] like Figures 10 to 13 As shown, the unlocking device includes an unlocking handle 64, an unlocking link 63 and a second guide plate 65. The two ends of the unlocking link 63 are connected to the locking rod 61 and the unlocking handle 64 respectively. The unlocking handle 64 and the unlocking link 63 are both movably inserted in the mounting groove 521, and the unlocking handle 64 is also arranged opposite to the handle groove 522. The unlocking link 63 is also movably inserted in the second guide plate 65, the second guide plate 65 is fixed in the mounting groove 521, and the second guide plate 65 is located on one side of the handle groove 522. The second guide plate 65 is used to make the unlocking link 63 reciprocate along the same axial direction. The locking spring 62 is also movably inserted in the unlocking link 63, and the unlocking link 63 is also movably inserted in the sliding seat 53. The unlocking handle 64 drives the locking rod 61 to move through the unlocking link 63, so that the locking rod 61 leaves the positioning groove, so that the fixed bracket 5 can rotate.

[0065] The locking device and the unlocking device are both located in the installation groove 521 and cannot be seen from the outer surface, so the integrity is better, the use is safer, the entry of foreign objects can be effectively prevented, and the aesthetics is improved.

[0066] like Figure 1 and Fig.25 As shown, a plurality of connecting screw holes 50 are arranged in an array on the top of the fixing bracket 5, and the connecting screw holes 50 are used to connect various vehicle accessories, such as a bicycle bracket.

[0067] When folding, the unlocking handle 64 is pulled, and the unlocking handle 64 drives the locking rod 61 to move away from the connecting bracket 4 through the unlocking link 63, and the locking rod 61 leaves the second positioning groove 42, and then the fixing bracket 5 is rotated toward the trunk of the car. When the fixing bracket 5 is rotated, the unlocking handle 64 can be released, and the locking rod 61 slides against the arc surface of the connecting bracket 4. When it is rotated to the first positioning groove 41 above, the locking rod 61 is inserted into the first positioning groove 41 above under the action of the locking spring 62, so that the fixing bracket 5 remains in the folded state. Fig.23 shown.

[0068] When unfolding, the unlocking handle 64 is pulled, and the unlocking handle 64 drives the locking rod 61 to move away from the connecting bracket 4 through the unlocking link 63, and the locking rod 61 leaves the first positioning groove 41, and then the fixing bracket 5 is rotated toward the ground. When the fixing bracket 5 is rotated, the unlocking handle 64 can be released, and the locking rod 61 slides against the arc surface of the connecting bracket 4. When it is rotated to the second positioning groove 42 in the horizontal position, the locking rod 61 is inserted into the upper second positioning groove 42 under the action of the locking spring 62, so that the fixing bracket 5 remains in the unfolded state. Fig. 22 shown.

[0069] When there are items on the fixed bracket 5 and it is inconvenient to open the trunk, the unlocking handle 64 can be pulled, and the unlocking handle 64 drives the locking rod 61 to move away from the connecting bracket 4 through the unlocking link 63, and the locking rod 61 leaves the second positioning groove 42, and then the fixed bracket 5 is rotated toward the ground. When the fixed bracket 5 is rotated, the unlocking handle 64 can be released, and the locking rod 61 slides against the arc surface of the connecting bracket 4. When the locking rod 61 is rotated to the third positioning groove 43, the locking rod 61 is stuck on the third positioning groove 43, and the fixed bracket 5 and the items are in a tilted state, so as not to interfere with the opening of the trunk. Since a bicycle rack and a bicycle are installed on the fixed bracket 5, it is convenient to open the trunk. Fig.24 shown.

[0070] The foldable vehicle bracket has three positions, which can be conveniently folded and unfolded, and can realize barrier-free opening of the trunk, and the unlocking handle 64 is located on the side close to the person, which is convenient to use as a whole, occupies little space when folded, and is convenient to store.

[0071] Embodiment 2

[0072] Based on the above embodiment 1, Figure 1 , Figure 3 and Figure 5 As shown, it also includes a lock head 36, which is connected to the lock hole on the connecting pipe 1, thereby preventing the anti-disconnection handle 35 from rotating, thereby locking the pin 31 and preventing the pin 31 from automatically disengaging from the connecting through hole 911. Under conditions such as vibration and inertia, the pin 31 tends to move toward the inside of the connecting pipe 1, thereby squeezing the torsion spring 33, and eventually causing the pin 31 to disengage from the connecting through hole 911, causing the connecting pipe 1 to separate from the square base 91. Therefore, in order to improve the reliability of the connection, the anti-disconnection handle 35 is locked by the lock head 36. When disassembling, first use the key to turn the lock head 36 so that the lock head 36 is not stuck on the lock hole 13, and then turn the anti-disconnection handle 35 to retract the pin 31 into the inside of the connecting pipe 1.

[0073] Embodiment 3

[0074] like Fig.18 and Fig.19As shown, the difference between this embodiment and embodiment 1 lies in the tensioning assembly. The tensioning assembly of this embodiment includes a tensioning handle 25, which is connected to the tensioning rod 23 through a thread. The tensioning handle 25 rests on the end plate 10, and the tensioning handle 25 is rotated to achieve the tightening and loosening of the tensioning block 21.

[0075] Embodiment 4

[0076] like Fig. 20 and Fig.21 As shown, the difference between this embodiment and embodiment 1 lies in the tensioning assembly. The tensioning assembly of this embodiment includes a cam handle 26. The screw 261 of the cam handle 26 is connected to the tensioning rod 23. The cam handle 26 is movable against the end plate 10. The tensioning block 21 can be tightened and loosened by rotating the cam handle 26, and locking can be achieved during tensioning.

[0077] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. A rear bracket, characterized in that: include: A connecting pipe (1), the connecting pipe (1) being used for being installed on a square-mouthed base (91) at the rear of a vehicle; A tensioning device (2), the tensioning device (2) being installed on the connecting pipe (1) and used for tensioning on the square-mouth base (91); an anti-slip device (3), the anti-slip device (3) being mounted on the connecting pipe (1) and being used for being inserted into the connecting through hole (911) of the square-mouth base (91); A connecting bracket (4), wherein the connecting bracket (4) is mounted on the connecting pipe (1); A fixed bracket (5), wherein the fixed bracket (5) is rotatably mounted on the connecting bracket (4); and A folding device is mounted on the fixed bracket (5) and is movably connected to the connecting bracket (4) for adjusting the angle between the fixed bracket (5) and the connecting bracket (4).

2. A rear bracket according to claim 1, characterized in that: The tensioning device (2) comprises: A tensioning seat (22), the tensioning seat (22) being movably inserted into the connecting pipe (1), the tensioning seat (22) being provided with a tensioning groove (221), and a tensioning inclined surface (222) being provided on one side of the tensioning groove (221); A tensioning block (21), the tensioning block (21) being movably inserted into a tensioning slot (15) on the connecting pipe (1), the tensioning block (21) being provided with a tensioning inclined surface (211), the tensioning block (21) being movably inserted into the tensioning groove (221), the tensioning block (21) being provided with a tensioning inclined surface (211) movably pressed against the tensioning inclined surface (222); A tensioning rod (23), wherein the tensioning rod (23) is fixed on the tensioning seat (22); and A tensioning assembly is connected to the tensioning rod (23) and is used to drive the tensioning seat (22) through the tensioning rod (23) to push the tensioning block (21) to be pressed onto the square-mouthed base (91).

3. A rear vehicle bracket according to claim 2, characterized in that: The tensioning assembly comprises one of a tensioning screw (24), a tensioning handle (25) or a cam handle (26).

4. A rear vehicle bracket according to claim 2, characterized in that: The tensioning slot (15) is located on the edge of the connecting pipe (1).

5. The rear bracket according to claim 1, characterized in that: The anti-falling device (3) comprises: an anti-slip plate (32), the anti-slip plate (32) being rotatably mounted inside the connecting pipe (1); A pin (31), wherein the pin (31) is fixed on the anti-slip plate (32) and is movably inserted into the connecting pipe (1); a torsion spring (33), the torsion spring (33) being connected to the connecting pipe (1) and the anti-drop plate (32) respectively, and being used to keep the pin (31) in a state of extending out of the connecting pipe (1); and An anti-slip handle (35), the anti-slip handle (35) is fixed on the anti-slip plate (32) and is movably inserted into the connecting pipe (1), and the anti-slip handle (35) is used to rotate the anti-slip plate (32) to retract the pin (31) into the connecting pipe (1).

6. A rear vehicle bracket according to claim 5, characterized in that: It also comprises a locking head (36), which is mounted on the anti-dropping handle (35) and connected to the connecting pipe (1), and is used to lock the anti-dropping handle (35) on the connecting pipe (1).

7. A rear vehicle bracket according to any one of claims 1 to 6, characterized in that: The connecting bracket (4) is provided with a plurality of positioning grooves; The folding device comprises: A locking device, which is slidably mounted on the fixing bracket (5) and is arranged opposite to a plurality of positioning grooves on the connecting bracket (4) and is used for being inserted into the positioning grooves to locate the position of the fixing bracket (5); and An unlocking device is slidably mounted on the fixing bracket (5) and is located at an end of the fixing bracket (5), and is used to drive the locking device to slide out of the positioning groove.

8. A rear vehicle bracket according to claim 7, characterized in that: The locking device comprises: a locking rod (61), the locking rod (61) being slidably inserted into the fixing bracket (5) and arranged opposite to the positioning groove; and A locking spring (62), the locking spring (62) being connected to the locking rod (61) and the fixing bracket (5) respectively, and being used to insert the locking rod (61) into the positioning groove.

9. A rear vehicle bracket according to claim 8, characterized in that: The unlocking device comprises: an unlocking handle (64), the unlocking handle (64) being slidably mounted on the fixing bracket (5); and An unlocking connecting rod (63), wherein the unlocking connecting rod (63) is respectively connected to the locking rod (61) and the unlocking handle (64).

10. The rear bracket of claim 8, characterized in that: Also includes: a sliding seat (53), the sliding seat (53) being fixed on the fixed bracket (5), the sliding seat (53) being provided with a first sliding groove (531) arranged opposite to the positioning groove, the locking rod (61) being slidably inserted into the first sliding groove (531); and A positioning plate (54), wherein the positioning plate (54) is mounted on the sliding seat (53), and a second sliding groove (541) is provided on the positioning plate (54), wherein the second sliding groove (541) is communicated with the first sliding groove (531) and is used to limit the position of the locking rod (61).

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