A vehicle-mounted bicycle rack

Abstract

The present invention provides a vehicle-mounted bicycle rack, which comprises a mounting base, a support rod, a bracket and a locking and fixing mechanism. The mounting base is used for connecting with a square base at the rear end of an automobile, and a connecting part is arranged at the end of the mounting base; the support rod is fixed on the mounting base; the bracket is rotatably mounted at the upper end of the support rod and is used for placing a bicycle; the locking and fixing mechanism is mounted between the support rod and the bracket to lock and fix the bracket in a state of being unfolded backward or folded downward. The vehicle-mounted bicycle rack of the present invention has a compact structure, is convenient and labor-saving for installation and unloading, and has high overall structural strength and good reliability.

Description

Technical Field

[0001] The present invention relates to a vehicle-mounted bracket, and particularly to a vehicle-mounted bicycle bracket. Background Art

[0002] There are generally two types of fixing a bicycle on a vehicle currently, roof fixing type and rear fixing type. The roof fixing type inevitably increases the overall height of the vehicle, and it is very easy to scrape against the top trees during driving in the wild, resulting in damage to the fixing device and the fall of the bicycle. Based on its relatively high layout position, the operation of taking and placing the bicycle, the maintenance and installation of the device are all very inconvenient. Although the rear fixing type can solve the above technical problems of the roof fixing type, its traditional rear fixing type is affected by the structure, and the whole is a fixed bracket structure, which cannot be folded when idle and occupies a large space; at the same time, it does not have an adjustment function, can only adapt to some single forms or models of bicycles, and does not have a rotation function, making it inconvenient to load and unload bicycles. Summary of the Invention

[0003] 【1】Technical Problems to be Solved

[0004] The technical problem to be solved by the present invention is to provide a vehicle-mounted bicycle bracket with a compact structure, convenient installation, and capable of realizing rapid deployment or retraction.

[0005] 【2】Technical Solutions for Solving the Problems

[0006] A vehicle-mounted bicycle bracket, which comprises:

[0007] A mounting seat 1 for connecting with the square base at the rear end of the vehicle, and a connecting portion is provided at the end of the mounting seat 1;

[0008] A support rod is vertically fixed on the mounting seat 1;

[0009] A bracket 5 is rotatably mounted on the upper end of the support rod for placing a bicycle;

[0010] A locking and fixing mechanism is installed between the support rod and the bracket 5 to lock and fix the bracket 5 in the backward deployment state or the downward retraction state.

[0011] Further, the connecting portion includes a plug rod 11, a supporting block 13 and a screw rod 15. The plug rod 11 is horizontally arranged forward and can be inserted into the square base at the rear end of the vehicle. A supporting plate 12 is fixed on the side wall of the end of the plug rod 11. The supporting block 13 is located at the end of the plug rod 11. The contact surface between the supporting block 13 and the end of the plug rod 11 is an inclined surface. A screw hole through which the screw rod 15 passes is formed in the supporting block 13. The head of the screw rod 15 passes forward through the plug rod 11 and extends outside the mounting seat 1, and a tightening portion 16 is fixed at its end. When the tightening portion 16 is rotated, the screw rod 15 can be driven to rotate, and the supporting block 13 can move forward and away from the supporting plate 12, so that the connecting portion is tightened and fixed in the square base.

[0012] Further, the cross-section of the supporting plate 12 is L-shaped, and the intersection line between the inclined surface and the side wall of the supporting plate 12 is inclined to the length direction of the supporting plate 12.

[0013] Further, the intersection lines between the inclined surface and the two side walls of the supporting plate 12 and the length direction of the supporting plate have the same angle.

[0014] Further, a limiting protrusion 151 for preventing the supporting block 13 from detaching is provided at the tail of the screw rod 15.

[0015] Further, the locking and fixing mechanism includes a main shaft, a dial block 42 and a slider 44. The main shaft is rotatably installed at the upper end of the support rod. A limiting plate 43 is rigidly connected to the main shaft. The two ends of the main shaft are bent to the same side to form the bracket 5. A clamping groove 430 with an opening facing away from the main shaft is formed at the end of the limiting plate 43. The dial block 42 is rotatably installed at the top of the support rod. The dial block 42 is connected to the slider 44 vertically slidably fitted at the lower end of the main shaft, and the slider 44 can be driven to slide up and down by the rotation of the dial block 42. When the limiting plate 43 rotates to the lower extreme position, the clamping groove 430 can be clamped into the clamping block 441 provided on the slider 44 to lock the bracket in the unfolded state. A first elastic member is provided on the locking and fixing mechanism to make the dial block 42 have a tendency to rotate backward and drive the slider 44 to have an upward movement tendency, or make the slider 44 have an upward movement and drive the dial block 42 to have a tendency to rotate backward.

[0016] Further, the rotation axis of the dial block 42 is parallel to the rotation axis of the main shaft. A hook 424 is provided at the rear end of the dial block 42. The first elastic member makes the hook 424 have a downward movement tendency. A limiting protrusion 432 is provided on the side wall of the limiting plate 43. When the bracket 5 rotates to the folded state, the limiting plate 43 rotates to the rear extreme position, and the hook hooks the limiting protrusion 432 to lock the main shaft.

[0017] Furthermore, an end portion of the limiting plate 43 is provided with an inclined guide surface 431 for contacting the clamping block 441 and pushing the slider to move downward.

[0018] Furthermore, the locking and fixing mechanism also includes a fixing seat 41 fixed to the upper end of the hollow support rod, the shift block 42 is rotatably installed on the top of the fixing seat 41, and the front end of the shift block 42 is provided with a connecting lug 421, and a connecting bracket 45 is hinged on the connecting lug 421. The connecting bracket 45 passes downward through the fixing seat 41 and is hinged to the slider 44.

[0019] Furthermore, a support seat 21 is fixed to the bottom of the support rod, and the support seat 21 is rotatably mounted on the connecting rod 14 on the mounting seat 1. The rotation direction of the support seat 21 is toward the deployment direction of the bracket 5. The support seat 21 is elastically connected with a bayonet 231 and a second elastic component that causes the bayonet 231 to have a movement tendency toward the connecting rod 14. The connecting rod 14 is provided with a pin hole 141 for inserting when the support rod is rotated to a vertical state.

[0020] Furthermore, the bayonet 231 is installed on the top of the support seat 21, and its sliding direction is parallel to the length direction of the support rod. The top of the bayonet 231 is provided with a pull block 23 for pushing the bayonet 231 to move upward to disengage it from the pin hole 141 opened at the top of the connecting rod 14.

[0021] Furthermore, a limiting component for limiting the backward rotation angle of the support rod is provided between the connecting rod 14 and the support seat 21 or the support rod.

[0022] Furthermore, a top plate is fixed on the top of the connecting rod 14, the pin hole 141 is opened on the top plate, one end of the top plate extends backward to form a first limiting portion 141, and a limiting groove 200 is opened on the support rod or the support seat 21 to accommodate the first limiting portion to be inserted and limit the rotation angle.

[0023] Furthermore, the rotation angle of the support rod is greater than or equal to 10 degrees and less than or equal to 60 degrees.

[0024] Furthermore, the length of the support rod is adjustable, and the support rod comprises a lower support rod 2 and an upper support rod 3. The upper support rod is sleeved on the lower support rod 2 and fixed by a locking bolt.

[0025] Furthermore, the cross section of the support rod is rectangular.

[0026] Furthermore, the connecting bracket 45 is a frame-shaped bracket structure formed by bending a steel wire.

[0027] 【3】Beneficial effects

[0028] The on-vehicle bicycle rack of the present invention is provided with a supporting block and a supporting plate, having a large tension force and reliable connection at different temperatures, enabling the bicycle rack to be reliably installed on the square base at the rear end of the vehicle; operated through a screw rod and a tightening part arranged at the front end, it is convenient and labor-saving to operate and has a self-locking function; the bent supporting rod structure enables the supporting rod to rotate backward when installing or unloading the bicycle, reducing the height of the bicycle and increasing the operating space, facilitating the installation and unloading of the bicycle and making it more labor-saving at the same time; the telescopic supporting rod structure can adjust the height of the supporting rod according to requirements, can adapt to bicycles of different specifications and sizes, and has a wide range of applications; a limiting structure is provided to prevent the supporting rod from rotating over-travel, improving safety and reliability and preventing the bicycle from directly hitting the ground under gravity when the supporting rod rotates; the folding bracket structure can be folded when the bicycle is not placed, reducing the occupied space; a locking and fixing mechanism is provided to lock and fix the bracket in the unfolded state or the folded state, preventing rotation and improving safety and reliability during driving; a dial block structure is provided, which is convenient and labor-saving to operate and has a beautiful appearance; the on-vehicle bicycle rack of the present invention has a compact structure, is convenient and labor-saving for installation and unloading, and has high overall structural strength and good reliability. Description of the Drawings

[0029] Figure 1 Schematic diagram of the unfolded state of the on-vehicle bicycle rack of the present invention;

[0030] Figure 2 Another perspective schematic diagram of the unfolded state of the on-vehicle bicycle rack of the present invention;

[0031] Figure 3 Schematic diagram of the folded state of the on-vehicle bicycle rack of the present invention;

[0032] Figure 4 Another perspective schematic diagram of the folded state of the on-vehicle bicycle rack of the present invention;

[0033] Figure 5 Schematic diagram of the backward tilting state of the on-vehicle bicycle rack of the present invention;

[0034] Figure 6 Schematic diagram of the structure of the support seat of the on-vehicle bicycle rack of the present invention;

[0035] Figure 7 Schematic diagram of the structure of the mounting seat of the on-vehicle bicycle rack of the present invention;

[0036] Figure 8 Another perspective schematic diagram of the structure of the mounting seat of the on-vehicle bicycle rack of the present invention;

[0037] Figure 9 Cross-sectional view of the connecting part of the on-vehicle bicycle rack of the present invention;

[0038] Figure 10 This is a schematic diagram of the state of the locking and fixing mechanism when the vehicle-mounted bicycle rack of the present invention is folded up.

[0039] Figure 11 This is a schematic diagram of the state of the locking and fixing mechanism when the vehicle-mounted bicycle rack of the present invention is folded up from another angle.

[0040] Figure 12 This is a cross-sectional view of the locking and fixing mechanism when the vehicle-mounted bicycle rack of the present invention is folded up.

[0041] Figure 13 This is a schematic diagram of the state of the hook when the vehicle-mounted bicycle rack of the present invention is folded up.

[0042] Figure 14 This is a schematic diagram of the state of the locking and fixing mechanism when the vehicle-mounted bicycle rack of the present invention is unfolded.

[0043] Figure 15 This is a schematic diagram of the state of the locking and fixing mechanism when the vehicle-mounted bicycle rack of the present invention is unfolded from another angle.

[0044] Figure 16 This is a cross-sectional view of the locking and fixing mechanism when the vehicle-mounted bicycle rack of the present invention is unfolded.

[0045] Figure 17 This is a schematic diagram of the structure of the connecting bracket when the vehicle-mounted bicycle rack of the present invention is unfolded. Detailed implementation manners

[0046] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] Refer to Figures 1 to 17, a vehicle-mounted bicycle rack, which is installed on the square base at the rear end of a vehicle (off-road vehicle) and is used to fix a bicycle. Its main structure includes a mounting seat 1, a support rod, a bracket 5 and a locking and fixing mechanism; a connecting part is provided at the end (rear end) of the mounting seat 1 for connecting with the square base at the rear end of the vehicle; the support rod is fixed on the mounting seat 1 and serves as the main support. It is used to support the bracket 5 to make the bracket have sufficient height so that the bicycle on the bracket 5 is separated from the ground. In this embodiment, the support rod is perpendicular to the horizontal plane; the bracket 5 is U-shaped as a whole, and the rod bodies at both ends form support rods for supporting the bicycle frame. It is rotatably installed at the upper end of the support rod. The rotation axis of the bracket 5 is horizontally arranged and perpendicular to the forward direction of the vehicle. When the bicycle needs to be placed, it needs to be unfolded backward (backward from the forward direction of the vehicle). In this embodiment, the included angle between the bracket 5 and the support rod when the bracket 5 is unfolded is 90 degrees - 95 degrees. When the bicycle does not need to be placed, the bracket 5 is folded up so that the rod body on the bracket 5 is arranged downward under the action of gravity and is basically parallel to the support rod, reducing the occupied space; the locking and fixing mechanism is installed between the support rod and the bracket 5 to lock and fix the bracket 5 in the backward unfolded state or the downward folded state to prevent the bracket from rotating when unfolding or folding.

[0048] The structures of the various components in this application will be described in detail below with reference to the accompanying drawings.

[0049] Refer to Figures 1 - 9, the connecting part at the end of the mounting base 1 (front end) includes a plug rod 11, a supporting block 13 and a screw rod 15. The plug rod 11 is horizontally arranged forward (the vehicle forward direction), and it can be inserted into the square base at the rear end of the vehicle. There is a mounting hole arranged backward on the square base, and the mounting hole is rectangular. In order to improve the installation verticality of this bicycle rack, in this embodiment, the cross-section of the plug rod 11 is rectangular to avoid tilting when inserted; a supporting plate 12 is fixed on the side wall of the end of the plug rod 11 (front end). In this embodiment, the cross-section of the supporting plate 12 is L-shaped, and its two side walls are attached and installed on two surfaces of the plug rod 11. The end of the supporting plate 12 extends forward outside the plug rod 11. The supporting block 13 is located at the end of the plug rod 11 (front end), and its contact surface with the end of the plug rod 11 is an inclined surface. There are threaded holes penetrating through the front and rear ends of the supporting block 13, and the screw rod 15 is threadedly connected in the threaded holes. The head of the screw rod 15 passes forward through the hollow plug rod 11 and extends outside the mounting base 1. A tightening part 16 is fixed at the end of the screw rod (rear end) for driving the screw rod to rotate. For the convenience of operation, the tightening part 16 is a handwheel or a handle. When the tightening part 16 is rotated and tightened, it can drive the screw rod 15 to rotate. Under the action of the thread, the supporting block 13 moves forward and moves away from the supporting plate 12 under the inclination of the inclined surface, so that the connecting part is tightened and fixed in the square base; in this embodiment, the intersection line of the inclined surface (the plane where it is located) and the side wall of the supporting plate 12 (the plane where it is located) is inclined to the length direction of the supporting plate 12; in order to improve the fixing effect, in this embodiment, the intersection lines of the inclined surface and the two side walls of the supporting plate 12 and the length direction of the supporting plate are at the same angle, that is, the intersection line of the inclined surface and one side wall of the supporting plate 12 and the length direction of the supporting plate 12 is angle a, and the intersection line of the inclined surface and the other side wall of the supporting plate 12 and the length direction of the supporting plate 12 is angle b, and a = b. It is combined with the L-shaped supporting plate 12 and contacts all four inner walls of the square base, thereby improving the connection strength and avoiding the inclination of the bracket; in order to prevent the supporting block 13 from detaching due to excessive stroke when loosening the screw rod, a limiting protrusion 151 is provided at the end of the screw rod (front end).

[0050] Refer to Figures 10 - 17, the locking and fixing mechanism includes a main shaft, a shifting block 42 and a sliding block 44. The main shaft is rotatably installed at the upper end of the support rod. In this embodiment, the rotation direction of the main shaft is horizontally arranged and perpendicular to the advancing direction of the vehicle. A limiting plate 43 is rigidly connected to the center of the main shaft. The two ends of the main shaft are bent towards the same side to form a bracket 5. The bracket 5 is U-shaped as a whole. The limiting plate 43 is a rectangular plate-like structure as a whole, which is perpendicular to the rotation axis of the bracket 5. A clamping groove 430 is provided at the end of the limiting plate 43, and the opening direction of the clamping groove 430 faces away from the main shaft; the shifting block 42 is rotatably installed at the top of the support rod, and the rotation axis of the shifting block 42 is parallel to the rotation axis of the bracket 5. The shifting block 42 is connected to the sliding block 44 through a connecting bracket 45. The sliding block 44 is located below the main shaft and is vertically slidably matched in the support rod. The sliding block 44 and the shifting block 42 are linked through the connecting bracket 45, that is, the rotation of the shifting block 42 can drive the up and down movement of the sliding block, and the up and down movement of the sliding block can also drive the rotation of the shifting block 42. An upwardly arranged clamping block 441 is provided in the clamping groove 430. When the limiting plate 43 rotates to the lower extreme position, the bracket 45 is in the unfolded state. At this time, the clamping block 441 is clamped into the clamping groove on the limiting plate, thereby realizing the locking when the bracket is in the unfolded state. At this time, the bracket cannot rotate. At the same time, a first elastic member is also provided. The first elastic member makes the shifting block 42 have a tendency to rotate backward and drive the sliding block 44 to move upward, or makes the sliding block 44 have an upward movement tendency and drive the shifting block 42 to have a tendency to rotate backward. In this embodiment, the first elastic member is a torsion spring and is arranged at the hinge point of the shifting block to make the shifting block have a tendency to rotate backward; two hooks 424 are provided at the rear end of the shifting block 42, and the hooks 424 are arranged downward (backward). The above-mentioned first elastic member makes the hooks 424 have a tendency to rotate downward. Symmetrically arranged limiting bosses 432 are provided on both sides of the limiting plate 43. The limiting bosses are cylindrical, and their axes are parallel to the axis of the main shaft. When the bracket 5 rotates to the folded state, the limiting plate 43 rotates to the rear extreme position. At this time, the hooks can hook the limiting bosses 432 and realize the locking of the main shaft, thereby realizing the locking and fixing of the folded bracket and avoiding shaking during the movement of the vehicle. For the convenience of description, Figures 10 - 16 The direction of the arrow in

[0051] Refer to Figure 12 , a sloping guide surface 431 is provided at the end of the limiting plate 43. When the limiting plate 43 rotates downward, the sloping guide surface 431 contacts the clamping block 441 provided on the sliding block 44, and under the pushing force of the sloping guide surface, the sliding block moves downward until the clamping block 441 is clamped into the clamping groove 430 of the limiting plate. The first elastic member clamps the clamping block tightly in the clamping groove 430 to realize locking and fixing.

[0052] In order to improve the structural strength and reduce the overall weight, in this embodiment, the support rod adopts a hollow rectangular tube structure, preferably made of aluminum alloy, and a fixing seat 41 is provided on the top of the support tube. The fixing seat is a rectangular parallelepiped as a whole, which is sleeved in the support rod, and the upper end is flush with the support rod, and axial fixation is achieved by a pin. Two hinge seats 412 are arranged in parallel at the top of the fixing seat 41 near the front end, and the lower end of the shift block 42 is provided with a hinge part 423 hinged to the two hinge seats respectively, and the front end of the shift block 42 is provided with a connecting lug 421, and a connecting bracket 45 is hinged on the connecting lug 421, see Figure 17 The connecting bracket 45 is a frame-shaped bracket structure bent by steel wire. The connecting bracket is U-shaped as a whole, and its ends are bent toward each other to form a connecting portion 451. The connecting portion is sleeved on both ends of the connecting lug 421 to achieve hinged connection with the shift block. A hole 410 for accommodating the connecting bracket 45 to pass through is opened on the fixing seat 41. After the connecting bracket 45 passes downward through the fixing seat 41, it is hinged with the slider 44 to achieve linkage between the shift block and the slider.

[0053] Openings 303 are provided on both sides of the upper end of the support rod to accommodate the installation of the locking and fixing mechanism and the bracket 5 (spindle) after assembly.

[0054] In this embodiment, the fixed seat 41 and the sliding block are both installed in the support rod, and a vertically arranged groove 1 301 and a horizontally arranged groove 2 302 are provided on the front side of the upper end of the support rod. Groove 1 is used to allow the limit plate to pass through, and groove 2 is used to allow the limit boss on the limit plate to pass through. The two are connected to each other to form a cross groove. A first groove body 411 corresponding to groove 1 and allowing the limit plate to enter is provided at the rear end of the fixed seat, and a second groove body 440 corresponding to groove 2 and allowing the limit plate to enter is provided at the rear end of the sliding block. A shaft body is rigidly connected to the second groove body to form a block. The shaft body is parallel to the rotation axis of the limit plate. In order to improve the structural strength, the shaft body in this embodiment is made of metal.

[0055] In order to facilitate operation and improve the structure, in this embodiment, the cross-section of the shift block is arc-shaped, and a shifting portion 422 protruding backward and upward is provided at the upper end of the shift block.

[0056] In order to make the bracket adapt to different vehicle models, the length (height) of the support rod in this embodiment is adjustable, which includes a lower support rod 2 and an upper support rod 3. The lower support rod and the upper support rod are both rectangular hollow tubes. The upper support rod is sleeved on the lower support rod 2 and fixed by a locking bolt. When adjusting, loosen the locking bolt, adjust the upper support rod to a suitable height, and then tighten the reduction bolt.

[0057] In order to facilitate the placement of the bicycle, in this embodiment, the support rod can be rotated backward to lower the bracket position. In this embodiment, the rotation angle is greater than or equal to 10 degrees and less than or equal to 60 degrees. Figures 1 - 6A support seat 21 is fixed at the bottom of the support rod, and the support seat 21 is rotatably mounted on the connecting rod 14 on the mounting seat 1. After assembly, the support rod is located at the front end of the connecting rod, and the rotation direction of the support seat 21 is toward the deployment direction of the bracket 5, that is, it rotates backward. A bayonet 231 is elastically connected to the support seat 21, and a second elastic component that makes the bayonet 231 have a movement tendency to move toward the connecting rod 14. A pin hole 141 is provided on the connecting rod 14 to be inserted when the support rod rotates to a supporting state (vertical state); in this embodiment, the bayonet 231 is mounted on the top of the support seat 21, and its sliding direction is parallel to the support rod In the longitudinal direction of the bicycle, a pull block 23 or a pull rod for moving the bayonet pin upward is provided at the top of the bayonet pin 231, and the pull block or the pull rod can pull the bayonet pin to overcome the second elastic component and move upward, so that the lower end of the bayonet pin is disengaged from the pin hole 141 provided at the top of the connecting rod 14, thereby enabling the support rod to rotate; when the pin shaft is inserted into the pin hole, the mounting seat and the support rod are fixedly connected to achieve support; in order to prevent the support rod from rotating too much and affecting the placement of the bicycle, a limiting component is provided between the connecting rod 14 and the supporting seat 21, or between the connecting rod and the support rod, and the limiting component is used to limit the rotation angle of the support rod backward; refer to Figure 6 A top plate is fixed on the top of the connecting rod 14, and a pin hole 141 is opened on the top plate. One end of the top plate extends backward and forms a first limiting portion 141, which is bent downward by 30 degrees to 40 degrees. A limiting groove 200 is opened at the front end of the side wall of the support rod (located in the support seat 21), and the first limiting portion is penetrated in the limiting groove 200. The rotation angle of the support rod depends on the height of the limiting groove (in the length direction of the support rod). When the support rod rotates to the limit position, the first limiting portion contacts the end of the limiting groove to achieve angle limitation.

[0058] A plastic cover 32 is provided at the front end of the upper support rod to improve the aesthetics and to set product-related logos; a handle 321 is provided on the side wall of the plastic cover to be used for lifting or rotating the support rod or other operations.

[0059] The following is an explanation of the method for using the vehicle-mounted bicycle bracket of the present invention:

[0060] The bracket 5 is located at the upper end, and the rod 11 at the front end of the mounting seat 1 is aligned with the mounting hole on the square base at the rear of the vehicle, and the rod 11 is inserted horizontally and forwardly into the mounting hole, so that the rod 11 is fully inserted into the mounting hole, and the tightening part 16 at the rear end of the mounting seat 1 is screwed, so that the support block 13 at the front end of the rod 11 moves forward under the action of the screw. At the same time, under the inclined guide of the inclined surface, the support block 13 moves outward in a diagonal manner with the support plate 12 until the inner wall of the mounting hole is completely pressed, thereby realizing the installation and fixation of the bicycle bracket. The two surfaces of the support plate are in contact with the two inner walls of the mounting hole, and the two surfaces of the support block 13 are in contact with the other two inner walls of the mounting hole, that is, the connecting part of the mounting seat is tightened on the four inner walls of the rectangular mounting hole, the contact area is large, the supporting force is balanced and stable, and the bicycle bracket is firmly installed at the rear end of the vehicle.

[0061] Bike Placement:

[0062] S1, pull the pull block 23 at the upper end of the support seat 21 upward to disengage the latch pin 231 from the pin hole at the top of the connecting rod 14, so that the support rod can rotate, and rotate the support rod backward. Under the limit of the limit component, the support rod rotates backward at a certain angle;

[0063] S2, rotate the shift block 42 backward, so that the hook 424 at the rear end of the shift block is disengaged from the inner boss of the afternoon on the limit plate 43, and the limit plate 43 can rotate freely after losing the restraint of the hook, and the bracket is rotated backward to the supporting state, and the limit plate rotates synchronously. When the limit plate 43 rotates downward, the inclined guide surface 431 contacts the block 441 set on the slider 44, and the slider moves downward under the driving force of the inclined guide surface until the block 441 is stuck in the slot 430 of the limit plate, and the first elastic component clamps the block in the slot 430, so as to achieve the locking and fixing of the bracket;

[0064] S3, placing the bicycle (frame part) on a mounting seat (not shown in the figure) of the bracket 5 and fixing it;

[0065] S3, rotating the support rod forward so that the entire rod is in a vertical state. When the support rod is rotated to the limit position, the bayonet 231 is inserted into the pin hole at the top of the connecting rod, thereby fixing the support rod;

[0066] The above steps complete the placement and fixation of the bicycle;

[0067] The vehicle is unloaded after it reaches the destination. The unloading steps are as follows:

[0068] S4, repeat step S1 to put down the support rod to facilitate unloading the bicycle;

[0069] S5. Rotate the dial 42 backward. The slider linked to it moves downward, causing the latch on the slider to disengage from the slot on the limit plate. After the limiting part loses the binding force, it can rotate freely, folding the bracket and causing the limit plate to rotate synchronously until it is locked after connecting with the hook. At this time, the bracket is in a folded state basically parallel to the support rod.

[0070] S6. Repeat step S3 and make the support rod in a vertical state. At this time, the bicycle bracket is in an idle state.

[0071] For the vehicle-mounted bicycle bracket of the present invention, a support block and a support plate are provided, with a large tightening force and reliable connection temperature, enabling the bicycle bracket to be reliably installed on the square base at the rear end of the vehicle; operated through a screw rod and the tightening part provided at the front end, the operation is convenient and labor-saving, and it has a self-locking function; the bent support rod structure makes the support rod rotate backward when installing or unloading the bicycle, reducing the height of the bicycle and increasing the operation space, facilitating the installation and unloading of the bicycle, and at the same time making the installation and unloading of the bicycle more labor-saving; the telescopic support rod structure can adjust the height of the support rod according to needs, can adapt to bicycles of different specifications and sizes, and has a wide range of applications; a limiting structure is provided to prevent the support rod from rotating over-travel, improving safety and reliability, and preventing the bicycle from directly hitting the ground due to gravity when the support rod rotates; the folding bracket structure is folded when the bicycle is not placed, reducing the occupied space; a locking and fixing mechanism is provided to lock and fix the bracket in the unfolded state or the folded state, preventing rotation and improving safety and reliability during driving; a dial structure is provided, with convenient, labor-saving operation and beautiful appearance; the vehicle-mounted bicycle bracket of the present invention has a compact structure, convenient and labor-saving installation and unloading, high overall structural strength and good reliability.

[0072] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A vehicle-mounted bicycle rack, characterized in that, Comprising: A mounting base (1) for connecting with a square base at the rear end of an automobile, and a connecting portion is provided at an end of the mounting base (1); A support rod fixed on the mounting base (1); A bracket (5) rotatably mounted at an upper end of the support rod for placing a bicycle; A locking and fixing mechanism mounted between the support rod and the bracket (5) for locking and fixing the bracket (5) in a backward unfolded state or a downward retracted state; The connecting portion includes a plug rod (11), a support block (13) and a screw rod (15). The plug rod (11) is horizontally arranged forward and can be inserted into a square base at the rear end of the automobile. A support plate (12) is fixed on a side wall of an end of the plug rod (11). The support block (13) is located at the end of the plug rod (11). A contact surface between the support block (13) and the end of the plug rod (11) is an inclined surface. A screw hole through which the screw rod (15) passes is formed in the support block (13). A head of the screw rod (15) passes through the plug rod (11) forward and extends outside the mounting base (1), and a tightening portion (16) is fixed at an end thereof. When the tightening portion (16) is rotated, the screw rod (15) can be driven to rotate and the support block (13) can move forward and away from the support plate (12), so that the connecting portion is tightened and fixed in the square base; The locking and fixing mechanism includes a main shaft, a dial block (42) and a slider (44). The main shaft is rotatably mounted at an upper end of the support rod. A limiting plate (43) is rigidly connected to the main shaft. Two ends of the main shaft are bent to the same side to form the bracket (5). A card slot (430) with an opening facing away from the main shaft is formed at an end of the limiting plate (43). The dial block (42) is rotatably mounted at the top of the support rod. The dial block (42) is connected to the slider (44) vertically and slidably matched at a lower end of the main shaft, and the slider (44) can be driven to slide up and down by rotation of the dial block (42). When the limiting plate (43) rotates to a lower limit position, the card slot (430) can be engaged with a card block (441) provided on the slider (44) to lock the bracket in an unfolded state. A first elastic member is provided on the locking and fixing mechanism to make the dial block (42) rotate backward and drive the slider (44) to have an upward movement tendency, or make the slider (44) move upward and drive the dial block (42) to have a backward rotation tendency; 2. The on-vehicle bicycle rack according to claim 1, wherein: The cross section of the support plate (12) is L-shaped, and an intersection line between the inclined surface and a side wall of the support plate (12) is inclined to a length direction of the support plate (12); 3. The in-vehicle bicycle rack according to claim 2, characterized in that: Intersection lines between the inclined surface and two side walls of the support plate (12) have the same angle with the length direction of the support plate; 4. The vehicle-mounted bicycle rack according to claim 1, wherein: A limiting protrusion (151) for preventing the support block (13) from detaching is provided at a tail of the screw rod (15); 5. The on-vehicle bicycle rack according to claim 1, wherein: The rotation axis of the shifting block (42) is parallel to the rotation axis of the main shaft. A hook (424) is provided at the rear end of the shifting block (42). The first elastic member causes the hook (424) to tend to move downward. A limiting boss (432) is provided on the side wall of the limiting plate (43). When the bracket (5) rotates to the retracted state, the limiting plate (43) rotates to the rear extreme position, and the hook hooks the limiting boss (432) to lock the main shaft.

6. The in-vehicle bicycle rack according to claim 5, characterized in that: An inclined guide surface (431) for contacting the clamping block (441) and pushing the sliding block downward is provided at the end of the limiting plate (43).

7. The on-vehicle bicycle rack according to claim 1, wherein: The locking and fixing mechanism further includes a fixing seat (41) fixed to the upper end of the hollow support rod. The shifting block (42) is rotatably mounted on the top of the fixing seat (41). A connecting lug (421) is provided at the front end of the shifting block (42). A connecting bracket (45) is hinged to the connecting lug (421). The connecting bracket (45) passes through the fixing seat (41) downward and is hinged to the sliding block (44).

8. The vehicle-mounted bicycle rack according to claim 1, wherein: A support seat (21) is fixed to the bottom of the support rod. The support seat (21) is rotatably mounted on a connecting rod (14) on the mounting seat (1). The rotation direction of the support seat (21) faces the unfolding direction of the bracket (5). A retaining pin (231) is elastically connected to the support seat (21), and a second elastic member that causes the retaining pin (231) to tend to move closer to the connecting rod (14). A pin hole (141) into which the support rod is inserted when it rotates to the vertical state is provided on the connecting rod (14).

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