Bicycle frame easy and convenient to adjust

Abstract

The utility model discloses a bicycle frame easy and convenient to adjust, and belongs to the field of bicycle frames, a main body structure comprises a bottom frame, the bottom frame is installed on a motor home bracket through four installation clamps, two wheel supports are symmetrically and fixedly installed on the two sides of the bracket above the bottom frame, each wheel support is of a long-strip structure, and a groove is formed in the surface of each wheel support. The two ends of the wheel support are respectively provided with a fixing belt for binding wheels, and the wheel support is fixedly installed on the bottom frame through a pair of installation bolts. By improving the installation and connection mode of the underframe and the support of the bicycle frame, the adjustor is additionally arranged at the joint of the underframe and the support, the angle between the support and the underframe can be adjusted through the adjustor, and the overall angle can be adjusted conveniently after a bicycle is fixed to the wheel carrier and the support. The inclination degree of the bicycle can be conveniently adjusted by adjusting the angle of the support, it is avoided that opening and closing of a trunk are affected, and the touring car is rubbed, and it is convenient to incline to reserve enough space when a single large-size bicycle is fixed.

Description

Technical Field

[0001] The utility model relates to the field of bicycle frames, in particular to a bicycle frame which can be easily adjusted. Background Art

[0002] A bike rack is a device that secures bicycles to cars and RVs, allowing them to be transported as a whole. With improved living standards, people are able to enjoy a variety of recreational activities, including outdoor cycling, which is popular among people of all ages. People often install bike racks on their RVs and use them to transport their bikes outdoors. However, due to the variety of bicycle types, sizes, and dimensions, traditional bike racks can only transport fixed models, making them less versatile. Furthermore, once a bicycle is secured to the rack, it cannot be adjusted, and larger bicycles may cause friction with the RV. Furthermore, this inability to adjust the rack also hinders trunk opening. Utility Model Content

[0003] The main purpose of the utility model is to provide a bicycle frame that is easily adjustable and can effectively solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A bicycle rack with easy adjustment includes a base frame, which has a C-shaped structure and is mounted on a recreational vehicle bracket via four mounting clips. A bracket is connected to the top of the base frame, with both ends of the bracket facing downward and respectively connected to the two ends of the base frame via an adjuster. The adjuster is connected using a snap-fit ​​structure and can adjust the angle at which the bracket is mounted on the base frame. Two wheel brackets are symmetrically fixedly mounted on both sides of the bracket above the base frame, and the bracket and wheel bracket cooperate to place and fix the bicycle.

[0006] Preferably, the wheel support is a long strip structure with grooves on its surface, and a fixing strap for tying the wheel is installed at each end of the wheel support, while the wheel support itself is fixed to the base frame via a pair of mounting bolts. The cross section of the wheel support consists of two parallel vertical sides, a horizontal bottom side, and two transition sides. The spacing between the two vertical sides is greater than the width of the bottom side, and the two vertical sides are connected to the two sides of the bottom side via two transition sides. The middle of the transition side is provided with a bend, and the bends are all folded inward. When used, a wheel support with such a structure can not only adapt to bicycles with different wheel widths, but also reduce the impact of wheel support deformation on wheel fixation, and can also accommodate foreign objects on the wheel, thereby ensuring the binding effect of the strap on the wheel and improving reliability.

[0007] Preferably, a pair of buffer pads are fixedly mounted on the surface of the bracket, the buffer pads are cylindrical structures, and at least two straps are fastened to the bracket.

[0008] Preferably, the adjuster mainly includes a left card block and a right card block, and the opposite surfaces of the left card block and the right card block are provided with a circle of meshing teeth, and the teeth are rectangular teeth. The back of the left card block is provided with a card slot for connecting with the bracket, and the back of the right card block is also provided with a card slot for connecting with the base frame.

[0009] Preferably, the regulator also includes a long screw and a handle, and the long screw and the handle are rotatably connected via a connecting block, and the hexagonal head clamping groove of the long screw is connected to the inner hexagonal groove reserved in the clamping block, and the connecting block is clamped into the connecting groove reserved at the end of the handle, and the end where the handle is connected to the connecting block is provided with a protrusion, and the direction of the protrusion is perpendicular to the axis of the connecting block; the protrusion plays the role of an eccentric wheel, and when the handle drives the long screw to rotate to a certain tightness, the handle rotates around the axis of the connecting block, and the protrusion will hit the bracket, so that the left block and the right block fit more tightly, so the connection is more stable, and it is not easy to come off due to vibration during use, and the reliability is also better.

[0010] Preferably, a spring is provided between the left clamping block and the right clamping block, so that when the handle is turned to loosen the long screw, the left clamping block and the right clamping block are more easily separated, thereby facilitating the user to adjust the angle of the bracket and making it easier to use.

[0011] Preferably, a connecting gasket is connected to the other side of the handle, and a slot is provided on the other side of the connecting gasket and is clipped onto the bracket.

[0012] Preferably, the long screw passes through the connecting block, the handle, the connecting gasket, the bracket, the left block, the spring, the right block and the base frame in sequence, and is locked with an adjusting nut at the end after passing through the base frame.

[0013] Preferably, the mounting card includes a U-shaped screw and a clamping piece, the bottom surface of the clamping piece is pre-machined with a clamping groove that engages with the surface of the base frame and is locked and fixed with screws, and the two ends of the long screw pass through the reserved holes of the clamping piece and are locked at the end with mounting nuts.

[0014] Preferably, the outer shell of the wheel support is provided with a plastic sleeve, and a T-slot is provided on the side of the bottom edge away from the vertical edge, and the plastic sleeve is provided with a protrusion that cooperates with the T-slot. The plastic sleeve not only acts as a buffer and improves the elasticity of the wheel support, but also increases friction, thereby improving stability after wheel binding. Furthermore, it prevents burrs or sharp corners generated during the molding and processing of the metal wheel support from scratching the wheel. The provision of the T-slot not only reduces the material used in the bottom edge, but also strengthens the bottom edge, thereby reducing production costs while ensuring stability and reliability in use, and also improving the stability of the connection between the plastic sleeve and the wheel support.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the utility model, by improving the installation connection method of the bicycle rack base and the bracket, an adjuster is installed at the connection between the two. The adjuster can be used to adjust the angle between the bracket and the base, which is convenient for adjusting the overall angle of the bicycle after it is fixed to the wheel bracket and the bracket. The adjuster is connected by a snap-fitting manner, which makes it convenient to adjust the inclination of the bicycle by adjusting the angle of the bracket to avoid affecting the opening and closing of the trunk and rubbing against the RV, and is convenient for tilting when fixing a single larger bicycle to reserve sufficient space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the chassis and the bracket of the present utility model;

[0019] Figure 3 This is a disassembled schematic diagram of the wheel support and chassis connection structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the disassembly of the regulator structure of the present utility model;

[0021] Figure 5 This is a disassembled schematic diagram of the installation card structure of the utility model;

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the wheel support of the present invention.

[0023] In the figure: 1. Base frame; 2. Bracket; 3. Wheel support; 4. Mounting card; 5. Adjuster; 6. Buffer pad; 7. Strap; 8. Fixing strap; 9. Mounting bolt; 10. Long screw; 11. Connecting block; 12. Handle; 13. Connecting gasket; 14. Left block; 15. Spring; 16. Right block; 17. Adjusting nut; 18. U-shaped screw; 19. Clamp; 20. Screw; 21. Mounting nut. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 、 Figure 2 、 Figure 3 as well as Figure 5As shown, a bicycle rack with easy adjustment includes a base frame 1. The base frame 1 has a C-shaped structure and is installed on the RV bracket through four mounting clips 4. A bracket 2 is connected to the top of the base frame 1. A pair of buffer pads 6 are fixedly installed on the surface of the bracket 2. The buffer pads 6 can prevent the friction between the bicycle and the bracket from damaging the paint of the bicycle during use, and can also reduce the collision noise during transportation. There are at least two straps 7 tied to the bracket 2 for tying the bicycle to the bracket 2. Two wheel supports 3 are symmetrically fixed on both sides of the bracket 2 above the base frame 1. The wheel supports 3 are long strip structures with grooves on the surface, and a fixing belt 8 for tying the wheel is installed at each end of the wheel support 3. The fixing belt 8 is used to bind the bicycle tire to the wheel support 3, and the wheel support 3 itself is fixed to the base frame 1 by a pair of mounting bolts 9. As shown Figure 6 As shown, the cross section of the wheel support 3 consists of two parallel vertical sides 31, a horizontal bottom side 33 and two transition sides 32. The vertical sides 31, the transition sides 32 and the bottom side 33 are an integrally formed structure. The wheel support 3 is drawn from an aluminum alloy material. In order to prevent sharp burrs or burrs from being generated at the free edges of the two vertical sides 31 during the production process, an arc-shaped transition is provided at the free edges; the spacing between the two vertical sides 31 is greater than the width of the bottom side 33, so that the wheel support 3 has a structure similar to a "︺" shape, and the two vertical sides 31 are connected to the two sides of the bottom side 33 through two transition sides 32 respectively; a bend is provided in the middle of the transition side 32, and the bends are all inward, that is, the bends on the transition side 32 are relative, which is more conducive to the fastening of the wheel.

[0026] Among them, the mounting card 4 includes a U-shaped screw 18 and a clamping member 19. The bottom surface of the clamping member 19 is pre-processed with a clamping groove that engages with the surface of the base frame 1 and is locked and fixed with a screw 20. The two ends of the U-shaped screw 18 pass through the reserved holes of the clamping member 19 and are locked at the end using a mounting nut 21.

[0027] like Figure 4 As shown, a pair of adjusters 5 are installed between the bracket 2 and the base frame 1 for connection. The adjusters 5 are connected by a snap-fit ​​structure, which can adjust the angle at which the bracket 2 is installed on the base frame 1.

[0028] The specific method is as follows: the regulator 5 mainly includes a left card block 14 and a right card block 16. The opposite surfaces of the left card block 14 and the right card block 16 are provided with a circle of meshing teeth, and a spring 15 is provided between the left card block 14 and the right card block 16. The back of the left card block 14 is provided with a card slot for clamping with the bracket 2, and the back of the right card block 16 is also provided with a card slot for clamping with the base frame 1.

[0029] Furthermore, the regulator 5 also includes a long screw 10 and a handle 12. The long screw 10 and the handle 12 are connected by a connecting block 11. The hexagonal head connecting groove of the long screw 10 is connected to the inner hexagonal groove reserved in the connecting block 11. The connecting block 11 is clamped into the connecting groove reserved at the end of the handle 12. A connecting gasket 13 is connected to the other side of the handle 12. The other side of the connecting gasket 13 is provided with a slot and is clamped to the bracket 2.

[0030] In this embodiment, the long screw 10 passes through the connecting block 11, the handle 12, the connecting gasket 13, the bracket 2, the left block 14, the spring 15, the right block 16 and the base frame 1 in sequence, and is locked with an adjusting nut 17 at the end after passing through the base frame 1.

[0031] In actual use, the chassis 1 is mounted to the RV's bracket using four mounting clips 4 and securely fastened. A bicycle is then placed into the grooves on the wheel support 3. The front and rear wheels are secured using securing straps 8, allowing the bicycle body to rest on the cushioning pad 6. The bicycle frame is then secured using the straps 7 provided in the pre-set areas on the bracket 2. The number of straps used depends on the vehicle model. This completes the securement of the bicycles. If two bicycles are positioned too close to the vehicle after securing, they may rub against the vehicle or interfere with the trunk's opening. The angle of the bracket 2 can be adjusted by using the adjuster 5. The specific operation is: first rotate the handle 12 in the opposite direction. Since the connecting block 11 is clamped in the handle 12, the connecting block 11 is driven to rotate together, and the head of the long screw 10 is clamped in the connecting block 11, so the long screw 10 is also driven to reverse. There is no clamping relationship between the handle 12 and the connecting gasket 13, and the other side of the connecting gasket 13 is clamped with the bracket 2, so the connecting gasket 13, the bracket 2, the left clamping block 14, and the right clamping block 16 will not rotate. The reverse rotation of the long screw 10 and the loosening of the adjustment nut 17 cause the left and right clamping blocks 14 and 16 to loosen. Under the action of the internal spring 15, the left and right clamping blocks 14 and 16 gradually separate from each other, and the bracket 2 can now be moved to adjust the angle. After the adjustment is appropriate, the long screw 10 and the adjustment nut 17 are tightened by rotating the handle 12 forward to re-engage the left and right clamping blocks 14 and 16, thereby fixing the angle between the bracket 2 and the base frame 1 after adjustment. After being fully tightened, the bracket 2 and the bicycle fixed thereon can be maintained at a suitable tilt angle, thereby facilitating use. If a larger bicycle can only be fixed, the angle of the bracket 2 and the base frame 1 can be adjusted to make more space, and the angle adjustment method is the same as above.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A bicycle frame with easy adjustment, comprising a bottom frame (1), characterized in that: The base frame (1) is a C-shaped structure and is mounted on the RV bracket via four mounting clips (4). A bracket (2) is connected above the base frame (1). The two ends of the bracket (2) face downward and are connected to the two ends of the base frame (1) via an adjuster (5). The adjuster (5) is connected using a snap-fit ​​structure and can adjust the angle at which the bracket (2) is mounted on the base frame (1). Two wheel supports (3) are symmetrically fixedly mounted on both sides of the bracket (2) above the base frame (1). The bracket (2) and the wheel support (3) cooperate to place and fix the bicycle.

2. The easily adjustable bicycle rack according to claim 1, characterized in that: The wheel support (3) is a long strip structure with a groove on its surface, and a fixing belt (8) for tying the wheel is installed at each end of the wheel support (3), and the wheel support (3) itself is fixed to the base frame (1) by a pair of mounting bolts (9); the cross section of the wheel support (3) consists of two parallel vertical sides (31), a horizontal bottom side (33) and two transition sides (32), the spacing between the two vertical sides (31) is greater than the width of the bottom side (33), and the two vertical sides (31) are connected to the two sides of the bottom side (33) through the two transition sides (32); the middle part of the transition side (32) is provided with a bend, and the bends are all inwardly folded.

3. The easily adjustable bicycle rack according to claim 2, characterized in that: A pair of buffer pads (6) are fixedly mounted on the surface of the bracket (2), and the buffer pads (6) are cylindrical in structure. At least two straps (7) are also fastened to the bracket (2).

4. The easily adjustable bicycle rack according to claim 1, characterized in that: The regulator (5) mainly includes a left clamping block (14) and a right clamping block (16). The opposing surfaces of the left clamping block (14) and the right clamping block (16) are provided with a circle of meshing teeth, and the teeth are rectangular teeth. The back of the left clamping block (14) is provided with a clamping groove for clamping with the bracket (2), and the back of the right clamping block (16) is also provided with a clamping groove for clamping with the base frame (1).

5. The easily adjustable bicycle rack according to claim 4, characterized in that: The regulator (5) further comprises a long screw (10) and a handle (12), wherein the long screw (10) and the handle (12) are rotatably connected via a connecting block (11), wherein the hexagonal head connecting groove of the long screw (10) is connected to the inner hexagonal groove of the connecting block (11), and the connecting block (11) is connected to the connecting groove reserved at the end of the handle (12), and a protrusion is provided at one end where the handle (12) is connected to the connecting block (11), and the direction of the protrusion is perpendicular to the axis of the connecting block (11).

6. The easily adjustable bicycle rack according to claim 5, characterized in that: A spring (15) is further provided between the left clamping block (14) and the right clamping block (16).

7. The easily adjustable bicycle rack according to claim 6, characterized in that: A connecting gasket (13) is connected to the other side of the handle (12), and a slot is provided on the other side of the connecting gasket (13) and is connected to the bracket (2).

8. The easily adjustable bicycle rack according to claim 7, characterized in that: The long screw (10) passes through the connecting block (11), the handle (12), the connecting gasket (13), the bracket (2), the left block (14), the spring (15), the right block (16) and the base frame (1) in sequence, and is locked at the end with an adjusting nut (17) after passing through the base frame (1).

9. The easily adjustable bicycle rack according to claim 1, characterized in that: The mounting card (4) comprises a U-shaped screw (18) and a clamping piece (19). The bottom surface of the clamping piece (19) is pre-machined with a clamping groove for engaging with the surface of the base frame (1) and is locked and fixed with screws (20). The two ends of the U-shaped screw (18) pass through the reserved holes of the clamping piece (19) and are locked at the end using mounting nuts (21).

10. The easily adjustable bicycle rack according to claim 2, characterized in that: The outer shell of the wheel support (3) is provided with a plastic sleeve (34), a T-shaped groove (35) is provided on the side of the bottom edge (33) away from the vertical edge (31), and a protrusion that cooperates with the T-shaped groove (35) is provided on the plastic sleeve (34).

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