Multifunctional vehicle-mounted bicycle rack

Abstract

The present invention relates to a multifunctional vehicle-mounted bicycle rack, comprising a crossbeam assembly and a base, wherein one end of the base is rotatably mounted with the crossbeam assembly, and a plurality of brackets are symmetrically arranged on both sides of the crossbeam assembly, and one end of the bracket is rotatably connected with a pull rod, and a tire hydraulic locking and unfolding device is installed between the bracket and the pull rod. The tire hydraulic locking and unfolding device of the present invention can be automatically unfolded, which is convenient and labor-saving. By adjusting the clamping position of the rack, the angle adjustment between the pull rod and the bracket can be achieved, which is suitable for different scenes and simple to operate; the position of the tire bracket can be adjusted through multiple adjustment holes, and bicycles of different specifications can be locked, which is simple to operate, convenient and labor-saving; remote control is simple to operate, and the crossbeam assembly can be adjusted to a horizontal state or a vertical state according to actual conditions, which is suitable for various vehicle models; the crossbeam assembly can be lengthened as needed to accommodate different numbers of bicycles.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle-mounted bicycle racks, in particular to a multifunctional vehicle-mounted bicycle rack. Background Art

[0002] At present, with the progress and development of society, environmental awareness and fitness concepts are becoming more and more popular, and green travel is generally recognized by the general public. Bicycles, as a common sports equipment for outdoor travel and leisure and entertainment, serve as a means of transportation for green travel and are accepted and recognized by most people. In order to transport bicycles to suitable venues, some bicycle enthusiasts will ride there, but for some venues that are too far away, most bicycle enthusiasts will choose to drive to the venue and then ride bicycles. However, people who drive out for leisure travel or sports often carry more luggage, and the internal space of the car itself is small and cannot accommodate too many accompanying items, so installing a car-mounted bicycle rack helps solve this problem.

[0003] Existing vehicle-mounted bicycle racks have great functional limitations. For example, the position of the bracket fixing the bicycle cannot be changed and can only be placed horizontally; the crossbeam of the vehicle-mounted bicycle rack is of fixed specifications and cannot be lengthened according to the number of bicycles; the tire bracket of the vehicle-mounted bicycle rack is manually opened without any auxiliary equipment, and the degree of automation is low. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a multifunctional vehicle-mounted bicycle rack, which can be adjusted in multiple places according to actual conditions and is suitable for various vehicle models.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: a multifunctional vehicle-mounted bicycle frame is provided, comprising a crossbeam assembly and a base, wherein the crossbeam assembly is rotatably mounted on one end of the base, and a plurality of brackets are symmetrically arranged on both sides of the crossbeam assembly, and a pull rod is rotatably connected to one end of the bracket, and a tire hydraulic locking and deployment device is installed between the bracket and the pull rod, and the tire hydraulic locking and deployment device comprises a hydraulic rod, an inner tube and an outer tube, and one end of the outer tube is rotatably connected to the side wall of the bracket, and a locking sleeve is rotatably mounted on the other end of the outer tube, and an inner tube is slidably mounted in the outer tube, and a hydraulic rod connected to the outer tube is installed in the inner tube, and one end of the inner tube extends out of the outer tube and is rotatably connected to the side wall of the pull rod, and a rack is arranged on the outer side wall of the inner tube along the axial direction, and a tooth claw engaged with the rack and a reset mechanism are installed inside the lock sleeve, when the lock sleeve is pressed, the tooth claw will be separated from the engaged rack, and when the lock sleeve is released, the reset mechanism is reset so that the tooth claw engages the rack.

[0006] As a supplement to the technical solution described in the present invention, a positioning through hole is opened on the side wall of one end of the outer tube for mounting the locking sleeve, and a locking hook that is interlocked with the positioning through hole is installed inside the locking sleeve. When the locking sleeve is pressed, the locking hook will be disengaged from the interlocking positioning through hole, and when the locking sleeve is released, the reset mechanism will reset so that the locking hook engages the positioning through hole.

[0007] As a supplement to the technical solution described in the present invention, the pull rod is a U-shaped rod, which is composed of two vertical rods and a horizontal rod. A tire support that slides back and forth along the length direction of the vertical rod is installed between the two vertical rods. The tire support is provided with a positioning groove for placing the tire. The side wall of the vertical rod is evenly arranged along the length direction. Both sides of the tire support are provided with slide grooves perpendicular to the vertical rods. A sliding buckle is slidably installed in each slide groove. One end of the sliding buckle is inserted into the corresponding adjustment hole, and the other end of the sliding buckle is connected to a spring installed inside the slide groove. The free end of each vertical rod is installed with an arc-shaped bent rod rotatably connected to the bracket, and the middle part of the arc-shaped bent rod is rotatably connected to the inner tube.

[0008] As a supplement to the technical solution described in the present invention, the tire support seat includes a tire support upper seat and a tire support lower seat, two upper sliding clamping parts in the shape of "┏" are symmetrically arranged on both sides of the tire support upper seat, and two lower sliding clamping parts in the shape of "┗" are symmetrically arranged on both sides of the tire support lower seat, and the tire support upper seat and the tire support lower seat are fixed by screws.

[0009] As a supplement to the technical solution described in the present invention, crossbeam punchings are symmetrically arranged on both sides of the bottom of one end of the crossbeam assembly, and a wrench is rotatably installed on the bottom of the other end of the crossbeam assembly. Base punchings are symmetrically arranged on both sides of the base, and the outer wall of the base punching is rotatably connected to the inner wall of the crossbeam punching through a rotating shaft. A semicircular plate is provided at the upper end of the base punching, and a plurality of grooves are provided along the edge of the upper end of the semicircular plate. A lock is rotatably installed between the two crossbeam punchings, and the free end of the lock is locked with the groove. A torsion spring is provided on the lock, and the upper part of the free end of the lock is rotatably connected with a connecting rod assembly, and one end of the connecting rod assembly is connected to the wrench.

[0010] As a supplement to the technical solution described in the present invention, the lock includes a rotating shaft and a T-shaped connecting block. The rotating shaft is connected to the T-shaped connecting block and is arranged in an I-shape as a whole. A rotating seat rotatably connected to the rotating shaft is installed at the bottom of the beam assembly. A torsion spring is sleeved on the rotating shaft, and the head of the T-shaped connecting block is engaged with the slots arranged on the two base stampings.

[0011] As a supplement to the technical solution described in the present invention, one end of the torsion spring presses the upper end surface of the T-shaped connecting block, and the other end of the torsion spring abuts against a limiting column arranged on the side wall of the rotating seat.

[0012] As a supplement to the technical solution described in the present invention, the beam assembly includes a beam body and an extended beam. One end of the beam body is sealed, and the other end is provided with a plug-in female head. The plug-in female head of the beam body is plugged into the end cover or the extended beam. The two ends of the extended beam are respectively provided with a plug-in male head and a plug-in female head. The side wall of the end of the beam body provided with the plug-in female head and the side wall of the end of the extended beam provided with the plug-in female head are both provided with plug-in holes. When the plug-in female head of the beam body is connected with the plug-in male head of the extended beam, the plug-in holes of the beam body and the plug-in holes of the extended beam are both inserted with connecting rods. The two connecting rods are fixed by long combination bolts, and the plug-in female head of the extended beam is plugged into the end cover.

[0013] As a supplement to the technical solution described in the present invention, the connecting rod is in the shape of an elongated strip, and slopes are symmetrically arranged on the upper parts of both ends of the connecting rod.

[0014] As a supplement to the technical solution described in the present invention, the end cover is plugged into the corresponding female plug and fixed by screws, and the wrench is located at the lower end of the connection between the female plug and the end cover.

[0015] Beneficial effects: The present invention relates to a multifunctional vehicle-mounted bicycle rack, in which the tire hydraulic locking and unfolding device can be automatically unfolded, which is convenient and labor-saving. By adjusting the clamping position of the rack, the angle adjustment between the pull rod and the bracket can be achieved, which is suitable for different scenarios and simple to operate. The position of the tire bracket can be adjusted through multiple adjustment holes, so that bicycles of different specifications can be locked, which is simple to operate, convenient and labor-saving. It can be remotely controlled and easy to operate, and the crossbeam assembly can be adjusted to a horizontal state or a vertical state according to actual conditions, which is suitable for various models. The crossbeam assembly can be lengthened as needed to accommodate different numbers of bicycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the pull rod, support rod and tire hydraulic locking and unfolding device of the present invention;

[0018] Figure 3 The present invention Figure 2 A partial enlarged view of

[0019] Figure 4 It is a structural schematic diagram of the tire hydraulic locking and unfolding device of the present invention;

[0020] Figure 5 is an exploded view of the tire hydraulic locking and deployment device of the present invention;

[0021] Figure 6 is a schematic structural diagram of the inner tube of the present invention;

[0022] Figure 7 It is a structural schematic diagram of the outer tube of the present invention;

[0023] Figure 8 is a schematic structural diagram of the pull rod of the present invention;

[0024] Fig. 9 is an exploded view of the pull rod of the present invention;

[0025] Fig.10 It is a structural schematic diagram of the crossbeam assembly and the base of the present invention;

[0026] Fig.11 The present invention Fig.10 A partial enlarged view of

[0027] Fig.12 is an exploded view of the beam assembly and the base of the present invention;

[0028] Fig.13 is a schematic structural diagram of the lock buckle of the present invention;

[0029] Fig.14 is an exploded view of the crossbeam assembly of the present invention;

[0030] Fig.15 It is a schematic structural diagram of the connecting rod described in the present invention.

[0031] Illustration: 1. Outer tube connector, 2. Hydraulic rod, 3. Rack, 4. Locking sleeve, 5. Tooth claw, 6. Inner tube connector, 7. Fixed seat, 8. Bushing, 9. Locking hook, 10. Inner tube, 11. Outer tube, 12. Reset mechanism, 13. Rotating bearing, 14. Slide rail, 15. Positioning through hole, 16. Raised part, 17. Long inner groove, 18. Support rod, 19. Pull rod, 20. Base, 21. Crossbeam assembly, 22. Tire hydraulic locking and unfolding device, 23. Tire support upper seat, 24. Spring, 25. Slide buckle, 26. Tire support lower seat, 27. Adjustment hole, 28. Tire support seat, 29. Positioning groove Slot, 30, vertical rod, 31, horizontal rod, 32, arc-shaped bent rod, 33, slide groove, 34, upper sliding clamping part, 35, lower sliding clamping part, 36, wrench, 37, beam stamping, 38, end cover, 39, connecting rod assembly, 40, base stamping, 41, torsion spring, 42, lock, 43, rotating seat, 44, rotating shaft, 45, semicircular plate, 46, slot, 47, rotating shaft, 48, T-shaped connecting block, 49, limiting column, 50, beam body, 51, extended beam, 52, socket, 53, connecting rod, 54, long combination bolt, 55, plug-in female head, 56, plug-in male head, 57, slope. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0033] The embodiment of the present invention relates to a multifunctional vehicle-mounted bicycle rack, such as Figure 1-15As shown, it includes a crossbeam assembly 21 and a base 20, one end of the base 20 is rotatably mounted with the crossbeam assembly 21, and a plurality of brackets 18 are symmetrically arranged on both sides of the crossbeam assembly 21, one end of the bracket 18 is rotatably connected with a pull rod 19, and a tire hydraulic locking and unfolding device 22 is installed between the bracket 18 and the pull rod 19, and the tire hydraulic locking and unfolding device 22 includes a hydraulic rod 2, an inner tube 10 and an outer tube 11, one end of the outer tube 11 is rotatably connected to the side wall of the bracket 18 through an outer tube connector 1, and the other end of the outer tube 11 is rotatably mounted There is a locking sleeve 4, an inner tube 10 is slidably installed in the outer tube 11, a hydraulic rod 2 connected to the outer tube 11 is installed in the inner tube 10, one end of the inner tube 10 extends out of the outer tube 11 and is rotatably connected to the side wall of the pull rod 19 through the inner tube connector 6, a rack 3 is arranged axially on the outer wall of the inner tube 10, a tooth claw 5 engaged with the rack 3 and a reset mechanism 12 are installed inside the locking sleeve 4, when the locking sleeve 4 is pressed, the tooth claw 5 will disengage from the engaged rack 3, when the locking sleeve 4 is released, the reset mechanism 12 is reset, so that the tooth claw 5 engages with the rack 3.

[0034] The outer tube connector 1 is rotatably connected to the side wall of the support rod 18, the inner tube connector 6 is rotatably connected to the side wall of the pull rod 19, the locking sleeve 4 is pressed, the claw 5 and the locking hook 9 are popped open, and the hydraulic rod 2 is released at a uniform speed, so that the inner tube 10 gradually extends out of the outer tube 11, and the locking sleeve 4 is released, the claw 5 will clamp the rack 3, thereby fixing the position of the hydraulic rod 2 and the inner tube 10, and achieving the tire bracket contraction locking function. At the same time, the locking hook 9 will buckle the positioning through hole 15 to fix the locking sleeve 4. The present invention realizes the angle adjustment between the pull rod 19 and the bracket 18 by adjusting the clamping position of the rack 3, is suitable for different scenes, is simple to operate, and is convenient and labor-saving.

[0035] One end of the hydraulic rod 2 is connected to the outer tube connector 1 by a threaded connection.

[0036] The outer wall of the inner tube 10 is provided with an elongated inner groove 17 along the axial direction, and the rack 3 is installed in the elongated inner groove 17 and is locked by screws.

[0037] A fixing seat 7 is installed at the other end of the outer tube 11 , and a locking sleeve 4 is rotatably connected to the fixing seat 7 .

[0038] An inwardly concave slide rail 14 is arranged along the axial direction on the outer side wall of the inner tube 10 , and a protrusion 16 extending into the slide rail 14 is arranged on the fixing seat 7 .

[0039] A rotating bearing 13 is installed in both the outer tube connector 1 and the inner tube connector 6 , and the rotating bearing 13 is used to be rotatably connected to the side wall of the pull rod 19 or the side wall of the bracket 18 .

[0040] A bushing 8 is installed at the opening of one end of the outer tube 11 where the locking sleeve 4 is installed. The bushing 8 is slidably connected to the outer side wall of the inner tube 10. The bushing 8 is a wearing part and needs to be replaced regularly.

[0041] The reset mechanism 12 is a torsion spring 41 .

[0042] A positioning through hole 15 is formed on the side wall of one end of the outer tube 11 on which the locking sleeve 4 is installed. A locking hook 9 that is engaged with the positioning through hole 15 is installed inside the locking sleeve 4. When the locking sleeve 4 is pressed, the locking hook 9 will be disengaged from the engaged positioning through hole 15. When the locking sleeve 4 is released, the reset mechanism 12 is reset so that the locking hook 9 engages with the positioning through hole 15.

[0043] The pull rod 19 is a U-shaped rod, which is composed of two vertical rods 30 and a horizontal rod 31. A tire support 28 is installed between the two vertical rods 30 and slides back and forth along the length direction of the vertical rod 30. The tire support 28 is provided with a positioning groove 29 for placing the tire. The side wall of the vertical rod 30 is evenly arranged along the length direction. Both sides of the tire support 28 are provided with a slide groove 33 perpendicular to the vertical rod 30. A slider 25 is slidably installed in each slide groove 33. One end of the slider 25 is inserted into the corresponding adjustment hole 27, and the other end of the slider 25 is connected to the spring 24 installed inside the slide groove 33. The free end of each vertical rod 30 is installed with an arc-shaped bent rod 32 rotatably connected to the bracket 18, and the middle part of the arc-shaped bent rod 32 is rotatably connected to the inner tube 10.

[0044] By pressing the two sliders 25 inward at the same time, one end of the slider 25 is separated from the adjustment hole 27, and the tire support 28 can slide freely on the two vertical rods 30 of the pull rod 19. The slider 25 is released, and the spring 3 inserts one end of the slider 25 into the required adjustment hole 27, thereby locking tires of different specifications. The present invention adjusts the position of the tire support 28 through multiple adjustment holes 27, and can lock bicycles of different specifications. The operation is simple, convenient and labor-saving.

[0045] The tire support seat 28 includes a tire support upper seat 23 and a tire support lower seat 26. Two upper sliding clamping parts 34 in the shape of "┏" are symmetrically arranged on both sides of the tire support upper seat 23, and two lower sliding clamping parts 35 in the shape of "┗" are symmetrically arranged on both sides of the tire support lower seat 26. The tire support upper seat 23 and the tire support lower seat 26 are fixed by screws.

[0046] The bottom of one end of the cross beam assembly 21 is symmetrically arranged with cross beam punches 37 on both sides, and the bottom of the other end of the cross beam assembly 21 is rotatably installed with a wrench 36. The base punches 40 are symmetrically arranged on both sides of the base 20. The outer wall of the base punch 40 is rotatably connected to the inner wall of the cross beam punch 37 through a rotating shaft 44. The upper end of the base punch 40 is provided with a semicircular plate 45, and the upper end of the semicircular plate 45 is provided with a plurality of slots 46 along the edge. A lock 42 is rotatably installed between the two cross beam punches 37. The free end of the lock 42 is buckled with the slot 46. The lock 42 is provided with a torsion spring 41. The upper part of the free end of the lock 42 is rotatably connected with a connecting rod assembly 39, and one end of the connecting rod assembly 39 is connected to the wrench 36. The connecting rod assembly 39 can be a connecting rod or multiple connecting rods connected together.

[0047] The lock 42 includes a rotating shaft 47 and a T-shaped connecting block 48, the rotating shaft 47 and the T-shaped connecting block 48 are connected to form an I-shaped arrangement as a whole, a rotating seat 43 rotatably connected to the rotating shaft 47 is installed at the bottom of the beam assembly 21, a torsion spring 41 is sleeved on the rotating shaft 47, and the head of the T-shaped connecting block 48 is buckled with the slots 46 arranged on the two base punchings 40. The rotating seat 43 is fixed to the bottom of the beam assembly 21 by screws.

[0048] One end of the torsion spring 41 presses the upper end surface of the T-shaped connecting block 48, and the other end of the torsion spring 41 abuts against the limit column 49 arranged on the side wall of the rotating seat 43. The side wall of the rotating seat 43 is provided with a mounting hole for the limit column 49 to be inserted.

[0049] The base 20 is fixed to the rear of the car, and multiple groups of bicycle brackets are installed on the beam assembly 21. Two slots 46 are set along the edge of the upper end of the semicircular plate 45. One slot 46 adjusts the beam assembly 21 to a horizontal state, and the other slot 46 adjusts the beam assembly 21 to a vertical state.

[0050] like Fig.10 As shown, in the horizontal state, the head of the T-shaped connecting block 48 is buckled with the slot 46 on the right side of the upper end of the semicircular plate 45. In the vertical state, the lock 42 is rotated by the wrench 36, and the head of the T-shaped connecting block 48 is buckled with the slot 46 on the left side of the upper end of the semicircular plate 45.

[0051] One end of the beam assembly 21 is rotatably connected to the base 20, and the wrench 36 is arranged at the lower part of the free end of the beam assembly 21. Multiple groups of bicycle brackets are installed on the beam assembly 21. The deployment of multiple groups of bicycle brackets does not affect the operation of the wrench 36. The wrench 36 remotely controls the T-shaped connecting block 48 to lift up through the connecting rod assembly 39. When the wrench 36 is released, the reset spring 7 will provide a downward elastic force to the T-shaped connecting block 48, so that the T-shaped connecting block 48 is buckled into the corresponding slot 46. The present invention is remotely controlled and easy to operate. The beam assembly 21 can be adjusted to a horizontal state or a vertical state according to actual conditions, and is suitable for various vehicle models.

[0052] The beam assembly 21 includes a beam body 50 and an extended beam 51. One end of the beam body 50 is sealed, and the other end is provided with a plug-in female head 55. The plug-in female head 55 of the beam body 50 is plugged into the end cover 38 or the extended beam 51. The two ends of the extended beam 51 are respectively provided with a plug-in male head 56 and a plug-in female head 55. The side wall of the end of the beam body 50 provided with the plug-in female head 55 and the side wall of the end of the extended beam 51 provided with the plug-in female head 55 are both provided with a plug-in hole 52. When the plug-in female head 55 of the beam body 50 is connected with the plug-in male head 56 of the extended beam 51, the plug-in hole 52 of the beam body 50 and the plug-in hole 52 of the extended beam 51 are both inserted with a connecting rod 53. The two connecting rods 53 are fixed by a long combination bolt 54. The plug-in female head 55 of the extended beam 51 is plugged into the end cover 38.

[0053] The connecting rod 53 is in the shape of an elongated strip, and slopes 57 are symmetrically arranged on the upper parts of both ends of the connecting rod 53 .

[0054] The end cover 38 is plugged into the corresponding female connector 55 and fixed by screws, and the wrench 36 is located at the lower end of the connection between the female connector 55 and the end cover 38.

[0055] Under normal circumstances, only the crossbeam body 50 is used as the main body of the tire bracket, and two tire brackets can be installed on each side of the crossbeam body 50, so that two bicycles can be placed at a time; when the number of bicycles is large, the end cover 38 at one end of the crossbeam body 50 is removed, and the plug-in female head 55 of the crossbeam body 50 is plugged into the plug-in male head 56 of the extended crossbeam 51, and then connecting rods 53 are inserted into the plug-in holes 52 of the crossbeam body 50 and the plug-in holes 52 of the extended crossbeam 51, and the two connecting rods 53 are fixed by long combination bolts 54, and finally the plug-in female head 55 of the extended crossbeam 51 is plugged into the end cover 38 and fixed by screws, so that the crossbeam body 50 and the extended crossbeam 51 together serve as the main body of the tire bracket, and two tire brackets can be installed on each side of the extended crossbeam 51, so that four bicycles can be placed at a time. Of course, one end of the lengthened beam 51 can also be connected to another lengthened beam 51 , and the connecting rods 53 in the two lengthened beams 51 are also fixed by long combination bolts 54 , and the hole positions on the connecting rods 53 are adjusted as needed.

[0056] The force direction of the long combination bolt 54 is along the length direction of the beam body 50 and the extended beam 51. The connection rod 53 cooperates with the long combination bolt 54 to achieve fixation between the beam body 50 and the extended beam 51. This is more stable than directly fixing the beam body 50 and the extended beam 51 with bolts or screws.

Claims

1. A multifunctional vehicle-mounted bicycle rack, comprising a crossbeam assembly (21) and a base (20), characterized in that: A crossbeam assembly (21) is rotatably mounted on one end of the base (20), and a plurality of brackets (18) are symmetrically arranged on both sides of the crossbeam assembly (21). One end of the bracket (18) is rotatably connected to a pull rod (19), and a tire hydraulic locking and deployment device (22) is installed between the bracket (18) and the pull rod (19). The tire hydraulic locking and deployment device (22) comprises a hydraulic rod (2), an inner tube (10) and an outer tube (11), one end of the outer tube (11) is rotatably connected to the side wall of the bracket (18), and the other end of the outer tube (11) is rotatably mounted with a locking sleeve (4), and the inner tube (10) is slidably installed in the outer tube (11). ), a hydraulic rod (2) connected to an outer tube (11) is installed in the inner tube (10), one end of the inner tube (10) extends out of the outer tube (11) and is rotatably connected to the side wall of the pull rod (19), a rack (3) is arranged along the axial direction on the outer wall of the inner tube (10), and a tooth claw (5) engaged with the rack (3) and a reset mechanism (12) are installed inside the locking sleeve (4), when the locking sleeve (4) is pressed, the tooth claw (5) will be separated from the engaged rack (3), when the locking sleeve (4) is released, the reset mechanism (12) is reset, so that the tooth claw (5) engages with the rack (3); the end of the outer tube (11) on which the locking sleeve (4) is installed has a The locking sleeve (4) is provided with a locking hook (9) interlocked with the positioning through hole (15); when the locking sleeve (4) is pressed, the locking hook (9) will be disengaged from the interlocking positioning through hole (15); when the locking sleeve (4) is released, the reset mechanism (12) is reset so that the locking hook (9) interlocks with the positioning through hole (15); the pull rod (19) is a U-shaped rod, which is composed of two vertical rods (30) and a horizontal rod (31); a tire support (28) is installed between the two vertical rods (30) and slides back and forth along the length direction of the vertical rod (30); and a positioning recess for placing a tire is provided on the tire support (28). A plurality of adjustment holes (27) are evenly arranged on the side wall of the vertical rod (30) along the length direction. Both sides of the tire support seat (28) are provided with slide grooves (33) perpendicular to the vertical rod (30). A slide buckle (25) is slidably installed in each slide groove (33). One end of the slide buckle (25) is inserted into the corresponding adjustment hole (27). The other end of the slide buckle (25) is connected to a spring (24) installed inside the slide groove (33). The free end of each vertical rod (30) is provided with an arc-shaped bent rod (32) rotatably connected to the bracket (18). The middle part of the arc-shaped bent rod (32) is rotatably connected to the inner tube (10).

2. The multifunctional vehicle-mounted bicycle rack according to claim 1, characterized in that: The tire support seat (28) comprises a tire support upper seat (23) and a tire support lower seat (26). Two upper sliding clamping parts (34) in the shape of "┏" are symmetrically arranged on both sides of the tire support upper seat (23). Two lower sliding clamping parts (35) in the shape of "┗" are symmetrically arranged on both sides of the tire support lower seat (26). The tire support upper seat (23) and the tire support lower seat (26) are fixed by screws.

3. The multifunctional vehicle-mounted bicycle rack according to claim 1, characterized in that: Crossbeam punchings (37) are symmetrically arranged on both sides of the bottom of one end of the crossbeam assembly (21), and a wrench (36) is rotatably installed on the bottom of the other end of the crossbeam assembly (21). Base punchings (40) are symmetrically arranged on both sides of the base (20), and the outer wall of the base punching (40) is rotatably connected to the inner wall of the crossbeam punching (37) via a rotating shaft (44). A semicircular plate (45) is arranged at the upper end of the base punching (40), and a plurality of slots (46) are arranged along the edge of the upper end of the semicircular plate (45). A lock buckle (42) is rotatably installed between the two crossbeam punchings (37), and the free end of the lock buckle (42) is locked with the slot (46). The lock buckle (42) is provided with a torsion spring (41), and the upper part of the free end of the lock buckle (42) is rotatably connected to a connecting rod assembly (39), and one end of the connecting rod assembly (39) is connected to the wrench (36).

4. The multifunctional vehicle-mounted bicycle rack according to claim 3, characterized in that: The lock buckle (42) comprises a rotating shaft (47) and a T-shaped connecting block (48); the rotating shaft (47) and the T-shaped connecting block (48) are connected to form an I-shaped arrangement as a whole; a rotating seat (43) rotatably connected to the rotating shaft (47) is installed at the bottom of the crossbeam assembly (21); a torsion spring (41) is sleeved on the rotating shaft (47); and the head of the T-shaped connecting block (48) is engaged with a slot (46) arranged on two base stampings (40).

5. The multifunctional vehicle-mounted bicycle rack according to claim 4, characterized in that: One end of the torsion spring (41) presses against the upper end surface of the T-shaped connecting block (48), and the other end of the torsion spring (41) abuts against a limiting column (49) arranged on the side wall of the rotating seat (43).

6. The multifunctional vehicle-mounted bicycle rack according to claim 3, characterized in that: The crossbeam assembly (21) comprises a crossbeam body (50) and an extended crossbeam (51); one end of the crossbeam body (50) is sealed and the other end is provided with a plug-in female head (55); the plug-in female head (55) of the crossbeam body (50) is plugged into the end cover (38) or the extended crossbeam (51); the two ends of the extended crossbeam (51) are respectively provided with a plug-in male head (56) and a plug-in female head (55); the crossbeam body (50) is provided with a side wall at one end of the plug-in female head (55) and a plug-in female head (55) The side wall of one end of the long crossbeam (51) provided with the plug-in female head (55) is provided with a plug-in hole (52). When the plug-in female head (55) of the crossbeam body (50) and the plug-in male head (56) of the extended crossbeam (51) are connected, the plug-in hole (52) of the crossbeam body (50) and the plug-in hole (52) of the extended crossbeam (51) are both inserted with a connecting rod (53). The two connecting rods (53) are fixed by a long combination bolt (54). The plug-in female head (55) of the extended crossbeam (51) is plugged into the end cover (38).

7. The multifunctional vehicle-mounted bicycle rack according to claim 6, characterized in that: The connecting rod (53) is in the shape of an elongated strip, and slopes (57) are symmetrically arranged on the upper parts of both ends of the connecting rod (53).

8. The multifunctional vehicle-mounted bicycle rack according to claim 6, characterized in that: The end cover (38) is plugged into the corresponding female plug connector (55) and fixed by screws, and the wrench (36) is located at the lower end of the connection between the female plug connector (55) and the end cover (38).

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