Bicycle rear wheel support and bicycle

Abstract

The utility model discloses a bicycle rear wheel support which comprises a rear support body and a wheel carrier, the top end of the wheel carrier is integrally connected with a moving block, the moving block is connected into the rear support body in a sliding mode, the inner wall of the rear support body is rotationally connected with a gear through a bearing, the gear is meshed with the moving block, and a rotating disc is arranged at the end, located outside the rear support body, of the gear. A fixing screw penetrates through the interior of the rotating disc in a threaded mode, and a plurality of threaded holes distributed in a circular structure at equal intervals are formed in the outer wall of the rear support. The rotating disc is rotated to drive the gear to rotate to be meshed with the moving block, the moving block can drive the wheel frame and the rear moving wheels to move, the distance between the two rear moving wheels can be adjusted according to different requirements, and use is more flexible; the rotating gear ring can be meshed with the gear ring, the gear ring can drive the lead screw to rotate to be in threaded connection with the square block, the square block can drive the handlebar to move, and the two handlebars can get close to each other or gradually get away from each other.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a bicycle rear wheel bracket and a bicycle. Background Art

[0002] A bicycle, also known as a cycle or a bike, is a means of transportation and transport that uses human power as mechanical transmission. A bicycle is a land transportation vehicle that is powered by human pedals, has at least two wheels, and is steered by handlebars and a front fork. It is made of steel, light alloy, or plastic. Types of bicycles include ordinary bicycles, road bicycles, fitness bicycles, track bicycles, mountain bicycles, downhill bicycles, etc.

[0003] For example, a height-adjustable bicycle frame with publication number CN104494767A and publication date 2015.04.08 includes a front wheel sleeve, a bicycle upper beam, a support seat sleeve, a bottom arc-shaped support beam, a rear wheel fork frame, and a rear wheel connecting frame. The lower end of the front wheel sleeve is connected to a front wheel fixing frame, which is fixed to the front wheel. At the same time, a steering wheel extension rod is arranged at the upper end of the front wheel sleeve. The front wheel sleeve is connected to the support seat sleeve rotating shaft through the bicycle upper beam, and the support seat sleeve rotating shaft is located on the support seat sleeve. A bottom arc-shaped support beam is connected to the lower end of the support seat sleeve, and two rear wheel connecting frames are connected to the rear end of the bottom arc-shaped support beam.

[0004] In the prior art, there are children's bicycles with one rear wheel or two rear wheels. However, it is not convenient to adjust the distance between the two wheels according to different needs, and the use is not flexible enough. Therefore, it is urgent to design a bicycle rear wheel bracket and a bicycle to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a bicycle rear wheel bracket and a bicycle to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bicycle rear wheel bracket and a bicycle, comprising a rear bracket and a wheel frame, wherein a moving block is integrally connected to the top of the wheel frame, and the moving block is slidably connected to the inside of the rear bracket, a gear is rotatably connected to the inner wall of the rear bracket through a bearing, and the gear and the moving block are meshed with each other, a turntable is provided at one end of the gear located outside the rear bracket, and a fixing screw is penetrated through the internal thread of the turntable, a plurality of threaded holes equidistantly distributed in a circular structure are provided on the outer wall of the rear bracket, the fixing screw thread penetrates the turntable and is threadedly inserted into the inside of the threaded hole, a rear moving wheel is provided at the bottom end of the wheel frame, an auxiliary rod is provided on the outer wall of one side of the wheel frame, and a guide seat is provided on the outer wall of the bottom of the rear bracket, and the auxiliary rod is slidably connected to the inside of the guide seat.

[0008] The bicycle comprises a front bracket, the rear bracket is connected to the front bracket, a front rod and a seat are respectively plugged into the front bracket, and a steering rack is welded to the top end of the front rod.

[0009] Furthermore, handlebars are sleeved on both ends of the bogie, and a screw rod is rotatably connected to the inner wall of the bogie through a bearing. A square block inserted into the handlebar is provided on the inner wall of the handlebar, and the square block is threadedly sleeved on the outside of the screw rod.

[0010] Furthermore, a gear ring is rotatably connected to the inner wall of the front rod via a bearing, and the gear ring extends to the outside of the front rod.

[0011] Furthermore, a gear ring is welded on the outer wall of the screw rod, and the gear ring and the gear ring are meshed with each other.

[0012] Furthermore, a movable groove is provided inside the front rod, and a triangular plug block is slidably connected inside the movable groove, and the triangular plug block is plugged into the teeth of the gear ring.

[0013] Furthermore, an extrusion screw is threadedly connected to the outer wall of one side of the front rod, and one end of the extrusion screw located inside the movable groove is rotatably connected to the extrusion block through a bearing.

[0014] In the above technical scheme, the bicycle rear wheel support and bicycle provided by the utility model include: (1) by means of the wheel frame, moving block, gear, turntable, fixing screw, threaded hole, guide seat and rear wheel, rotating the turntable can drive the gear to rotate and mesh with the moving block, so that the moving block can drive the wheel frame and the rear moving wheel to move, and the distance between the two rear moving wheels can be adjusted according to different needs, so that the use is more flexible; (2) by means of the steering frame, screw rod, square block, handlebar, gear ring and gear ring, rotating the gear ring can mesh with the gear ring, and the gear ring can drive the screw rod to rotate and mesh with the square block thread, so that the square block can drive the handlebar to move, so that the two handlebars can be moved closer to each other or gradually away from each other, and the overall length of the handlebar can be adjusted according to the age of the rider, so that it can be used by children of different ages; (3) by means of the movable groove, triangular plug block, extrusion screw and extrusion block, rotating the extrusion screw can drive the extrusion block to move and squeeze the triangular plug block, so that the triangular plug block can be moved up and inserted into the teeth of the gear ring, so that the gear ring can play a limiting role and prevent the gear ring from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 The utility model is a three-dimensional structural schematic diagram of a bicycle rear wheel bracket and a bicycle embodiment provided by the utility model.

[0017] Figure 2 The utility model is a front view of the internal structure of the rear wheel support of a bicycle and a bicycle embodiment provided by the utility model.

[0018] Figure 3 The utility model is a schematic diagram of the internal top view of the rear wheel support of a bicycle and a bicycle embodiment provided by the utility model.

[0019] Figure 4 The utility model is a schematic diagram of a bicycle rear wheel support and a handlebar adjustment structure provided in an embodiment of the bicycle.

[0020] Description of reference numerals:

[0021] 1. Rear bracket; 2. Wheel bracket; 3. Moving block; 4. Gear; 5. Turntable; 6. Fixing screw; 7. Threaded hole; 8. Guide seat; 9. Rear moving wheel; 10. Front bracket; 11. Front rod; 12. Seat; 13. Bogie; 14. Screw; 15. Square block; 16. Handlebar; 17. Gear ring; 18. Gear ring; 19. Movable groove; 20. Triangular plug block; 21. Extrusion screw; 22. Extrusion block; 23. Auxiliary rod. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-4 As shown, the rear wheel bracket of a bicycle provided by the embodiment of the utility model comprises a rear bracket 1 and a wheel frame 2, a moving block 3 is integrally connected to the top of the wheel frame 2, and the moving block 3 is slidably connected to the inside of the rear bracket 1, a gear 4 is rotatably connected to the inner wall of the rear bracket 1 through a bearing, and the gear 4 is meshed with the moving block 3, a turntable 5 is provided at one end of the gear 4 located outside the rear bracket 1, and a fixing screw 6 is penetrated through the internal thread of the turntable 5, a plurality of threaded holes 7 equidistantly distributed in a circular structure are provided on the outer wall of the rear bracket 1, the fixing screw 6 is threadedly penetrated through the turntable 5 and then threadedly inserted into the inside of the threaded hole 7, a rear moving wheel 9 is provided at the bottom end of the wheel frame 2, an auxiliary rod 23 is provided on the outer wall of one side of the wheel frame 2, and a guide seat 8 is provided on the outer wall of the bottom of the rear bracket 1, and the auxiliary rod 23 is slidably connected to the inside of the guide seat 8.

[0024] The utility model provides a bicycle rear wheel support, comprising a rear support 1 and a wheel frame 2, wherein a moving block 3 is integrally connected to the top of the wheel frame 2, and the moving block 3 is slidably connected to the inside of the rear support 1, a gear 4 is rotatably connected to the inner wall of the rear support 1 through a bearing, and the gear 4 and the moving block 3 are meshed with each other, a turntable 5 is arranged at one end of the gear 4 located outside the rear support 1, and a fixing screw 6 is penetrated through the internal thread of the turntable 5, a plurality of threaded holes 7 which are equidistantly distributed in a circular structure are arranged on the outer wall of the rear support 1, the fixing screw 6 is threadedly penetrated through the turntable 5 and then threadedly inserted into the inside of the threaded hole 7, a rear moving wheel 9 is arranged at the bottom end of the wheel frame 2, and the wheel An auxiliary rod 23 is provided on the outer wall of one side of the frame 2, and a guide seat 8 is provided on the outer wall of the bottom of the rear bracket 1. The auxiliary rod 23 is slidably connected to the inside of the guide seat 8. When the distance between the two rear moving wheels 9 needs to be adjusted according to different needs, the fixing screw 6 is threaded out from the inner thread of the threaded hole 7, and the turntable 5 is rotated to drive the gear 4 to rotate. The gear 4 will engage with the moving block 3 to move the moving block 3, and the moving block 3 will drive the wheel frame 2 to move, and the wheel frame 2 will drive the rear moving wheel 9 to move. The distance between the two rear moving wheels 9 can be adjusted according to different needs, can be suitable for different usage needs, and improves flexibility during use.

[0025] By setting: rotating the turntable 5 can drive the gear 4 to rotate and engage with the moving block 3, so that the moving block 3 can drive the wheel frame 2 and the rear moving wheel 9 to move, and the distance between the two rear moving wheels 9 can be adjusted according to different needs, which is more flexible to use.

[0026] The bicycle comprises a front bracket 10, a rear bracket 1 connected to the front bracket 10, a front rod 11 and a seat 12 are respectively inserted into the front bracket 10, and a steering rack 13 is welded to the top end of the front rod 11.

[0027] In one embodiment provided by the present utility model, Figure 1 and Figure 4 As shown, handlebars 16 are sleeved at both ends of the bogie 13, and a screw rod 14 is rotatably connected to the inner wall of the bogie 13 through a bearing, a square block 15 is provided on the inner wall of the handlebar 16 and inserted into the inside of the handlebar 16, and the square block 15 is threadedly sleeved on the outside of the screw rod 14, and the inside of the handlebar 16 is also a square groove, which can guide the square block 15.

[0028] In another embodiment provided by the present utility model, Figure 4 As shown, a gear ring 18 is rotatably connected to the inner wall of the front rod 11 via a bearing, and the gear ring 18 extends to the outside of the front rod 11 , so that the gear ring 18 can be rotated outside the front rod 11 .

[0029] In another embodiment provided by the present utility model, Figure 4As shown, a gear ring 17 is welded on the outer wall of the screw rod 14 , and a gear ring 18 is meshed with the gear ring 17 , so that the gear ring 17 can drive the screw rod 14 to rotate.

[0030] In one embodiment provided by the present utility model, Figure 4 As shown, a movable groove 19 is provided inside the front rod 11 , and a triangular plug block 20 is slidably connected inside the movable groove 19 . The triangular plug block 20 is inserted into the teeth of the gear ring 18 , and the movable groove 19 can guide the triangular plug block 20 .

[0031] In another embodiment provided by the present utility model, Figure 1 and Figure 4 As shown, an extrusion screw 21 is threadedly connected to the outer wall of one side of the front rod 11, and one end of the extrusion screw 21 located inside the movable groove 19 is rotatably connected to an extrusion block 22 through a bearing. Rotating the extrusion screw 21 can drive the extrusion block 22 to move.

[0032] Working principle: when the distance between the two rear moving wheels 9 needs to be adjusted, the fixing screw 6 is threaded out from the inner threaded hole 7, and the turntable 5 is turned to drive the gear 4 to rotate, and the gear 4 will mesh with the moving block 3 to move the moving block 3, and the moving block 3 will drive the wheel frame 2 to move, and the wheel frame 2 will drive the rear moving wheel 9 to move, so that the distance between the two rear moving wheels 9 can be adjusted according to different needs, and the use is very flexible. After the adjustment is completed, the fixing screw 6 is threaded through the turntable 5 and then threaded into the corresponding threaded hole 7. Due to the different arm lengths of children of different ages, children of different ages need to adjust the total length of the two pairs of handlebars 16 when using bicycles. Turn the extrusion screw 21 to The extrusion block 22 moves. At this time, the triangular plug block 20 is not squeezed by the extrusion block 22. The triangular plug block 20 will drop and escape from the teeth of the gear ring 18. The gear ring 18 is rotated to engage with the gear ring 17, so that the gear ring 17 can drive the screw rod 14 to rotate and thread the square block 15, so that the square block 15 can drive the handlebar 16 to move, and the length between the two handlebars 16 can be adjusted. The extrusion screw 21 is rotated to drive the extrusion block 22 to move. The extrusion block 22 will squeeze the triangular plug block 20, so that the triangular plug block 20 can be inserted into the teeth of the gear ring 18, and the gear ring 18 can be limited to prevent the gear ring 18 from rotating. The function of adjusting the total distance between the two handlebars 16 is realized, which is suitable for children of different ages to ride.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bicycle rear wheel support, comprising a rear support (1) and a wheel frame (2), characterized in that: The top of the wheel frame (2) is integrally connected with a moving block (3), and the moving block (3) is slidably connected to the inside of the rear bracket (1); a gear (4) is rotatably connected to the inner wall of the rear bracket (1) through a bearing, and the gear (4) and the moving block (3) are meshed with each other; a turntable (5) is provided at one end of the gear (4) located outside the rear bracket (1), and a fixing screw (6) is penetrated through the internal thread of the turntable (5); a plurality of threaded holes (7) distributed in a circular structure with equal distances are provided on the outer wall of the rear bracket (1); the fixing screw (6) is threadedly inserted into the inside of the threaded hole (7) after threading through the turntable (5); a rear moving wheel (9) is provided at the bottom end of the wheel frame (2); an auxiliary rod (23) is provided on the outer wall of one side of the wheel frame (2); and a guide seat (8) is provided on the outer wall of the bottom of the rear bracket (1); the auxiliary rod (23) is slidably connected to the inside of the guide seat (8).

2. A bicycle comprising the bicycle rear wheel support as claimed in claim 1, characterized in that: The vehicle comprises a front bracket (10), the rear bracket (1) being connected to the front bracket (10), a front rod (11) and a seat (12) being respectively plugged into the front bracket (10), and a bogie (13) being welded to the top end of the front rod (11).

3. The bicycle according to claim 2, characterized in that: Both ends of the bogie (13) are sleeved with handlebars (16), and a screw rod (14) is rotatably connected to the inner wall of the bogie (13) via a bearing, and a square block (15) inserted into the handlebar (16) is provided on the inner wall of the handlebar (16), and the square block (15) is threadedly sleeved on the outside of the screw rod (14).

4. The bicycle according to claim 3, characterized in that: A gear ring (18) is rotatably connected to the inner wall of the front rod (11) via a bearing, and the gear ring (18) extends to the outside of the front rod (11).

5. The bicycle according to claim 4, characterized in that: A gear ring (17) is welded on the outer wall of the screw rod (14), and the gear ring (18) and the gear ring (17) are meshed with each other.

6. The bicycle according to claim 5, characterized in that: The front rod (11) is provided with a movable groove (19) inside, and a triangular plug block (20) is slidably connected inside the movable groove (19), and the triangular plug block (20) is plugged into the teeth of the gear ring (18).

7. The bicycle according to claim 6, characterized in that An extrusion screw (21) is threadedly connected to the outer wall of one side of the front rod (11), and one end of the extrusion screw (21) located inside the movable groove (19) is rotatably connected to an extrusion block (22) via a bearing.

Images