Flywheel structure provided with ball support

Abstract

The utility model relates to a flywheel structure with a ball support, which relates to the technical field of flywheels, and comprises a chain wheel, an inner sleeve shaft and an outer sleeve shaft, the chain wheel is connected with the outer sleeve shaft, the outer sleeve shaft is provided with an assembling hole, the inner sleeve shaft is inserted into the assembling hole, the inner wall of the assembling hole is provided with an assembling groove, the inner sleeve shaft is provided with an assembling block, and the assembling block is provided with a ball support. A transmission assembly is arranged between the inner sleeve shaft and the outer sleeve shaft and used for driving the inner sleeve shaft to rotate by means of rotation of the outer sleeve shaft, the assembling block is provided with a first rolling groove, the outer sleeve shaft is provided with a first limiting groove communicated with the assembling groove, and the outer sleeve shaft is provided with a first limiting block inserted into the first limiting groove. The first limiting block is in threaded connection with the first limiting groove, the first limiting block is provided with a second rolling groove, first balls are arranged in the first rolling groove and the second rolling groove in a rolling mode, and the first balls can penetrate through the first limiting groove. The ball replacement device has the effect of improving the ball replacement convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of flywheels, in particular to a flywheel structure equipped with a ball bracket. Background Art

[0002] A bicycle flywheel is a wheel-shaped energy accumulator with a large moment of inertia installed on the rear axle of a bicycle. When the speed of the bicycle's rear wheel increases, the kinetic energy of the bicycle flywheel increases, and the energy is stored; when the speed of the bicycle's rear wheel decreases, the kinetic energy of the bicycle flywheel decreases, and the energy is released. It is a rotating component with appropriate moment of inertia that plays the role of storing and releasing kinetic energy. It can not only drive the wheel forward, but also freely reverse and idle, and can indirectly stop the force.

[0003] The bicycle flywheel in the existing technology mainly includes a freewheel base and a wheel disc. The wheel disc is a sprocket for chain engagement. The wheel disc and the freewheel base are matched through splines so that the wheel disc is sleeved on the freewheel base. The freewheel base includes an outer sleeve and an inner sleeve. The inner sleeve is rotatably inserted into the outer sleeve. A circle of ratchet teeth is provided on the inner wall of the outer sleeve. A tooth block that engages the ratchet teeth is rotated on the outer wall of the inner sleeve. A spring is provided between the tooth block and the inner sleeve. Through this structure, the flywheel can be rotated in one direction to drive the inner sleeve and the wheel connected to the inner sleeve to rotate, so that the rider does not have to pedal all the time during continuous riding.

[0004] In a specific bicycle flywheel structure, the friction between the inner and outer sleeves causes the vehicle speed to decrease and accelerate during pedaling. Therefore, a number of balls are often provided between the inner and outer sleeves to reduce frictional resistance. The balls are subjected to considerable pressure and are prone to wear during long-term use. However, the balls need to be disassembled for replacement, which is cumbersome and inconvenient. Utility Model Content

[0005] In order to improve the convenience of ball replacement, the present application provides a flywheel structure equipped with a ball bracket.

[0006] The present application provides a flywheel structure equipped with a ball support, which adopts the following technical solution:

[0007] The transmission gear of the present invention is a gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a

[0008] By adopting the above technical solution, the width of the first limit groove is equal to or slightly larger than the diameter of the first ball. When the first ball needs to be replaced, the first limit block is pushed to rotate in the first limit groove, thereby releasing the threaded connection and removing the first limit block from the first limit groove. At this time, the overall flywheel structure can be rotated so that the first ball falls from the first limit groove under the action of gravity to complete the disassembly. Then, the new first ball is placed in the first limit groove, so that the first ball is inserted into the first rolling groove on the assembly block. Then, the first limit block is inserted into the first limit groove and rotated and tightened, so that the first ball enters the second rolling groove on the first limit block, thereby completing the replacement of the ball. There is no need to disassemble the inner sleeve and the outer sleeve, thereby improving the convenience of ball replacement.

[0009] Preferably, the outer sleeve shaft is provided with a mounting block, the mounting block is inserted into the assembly groove and threadedly connected to the assembly groove, the mounting block is provided with a third rolling groove, the inner sleeve shaft is provided with a fourth rolling groove, and second balls are rolled in the third rolling groove and the fourth rolling groove.

[0010] By adopting the above technical solution, the mounting block is inserted into the assembly groove and threadedly connected to the assembly groove, and the second ball rolls in the third rolling groove and the fourth rolling groove, which limits the inner sleeve shaft while reducing the friction resistance caused by the limitation, facilitating the rotation of the inner sleeve shaft, thereby facilitating the riding of the bicycle.

[0011] Preferably, the mounting block is provided with a second limiting groove, the mounting block is provided with a second limiting block inserted into the second limiting groove, the second limiting block is threadedly connected to the second limiting groove, the third rolling groove is provided on the second limiting block, and the second ball can pass through the second limiting groove.

[0012] By adopting the above technical solution, after the second limit block is disengaged from the second limit groove by rotating the second limit block, the second ball can be taken out through the second limit groove, and a new second ball is placed in the second limit groove, so that the second ball enters the fourth rolling groove on the inner sleeve shaft, and the second limit groove is inserted into the second limit groove and rotated and tightened, so that the second ball is inserted into the third rolling groove on the second limit block, completing the ball replacement. The operation is simple and convenient, which improves the convenience of ball replacement.

[0013] Preferably, the outer sleeve shaft is provided with several positioning blocks, the sprocket is provided with a mounting hole, the inner wall of the mounting hole is provided with a positioning groove, the outer sleeve shaft is inserted into the mounting hole, the positioning blocks are inserted into the positioning groove, and the outer sleeve shaft is provided with a fixing assembly, which is used to fix the sprocket on the outer sleeve shaft.

[0014] By adopting the above technical solution, the positioning block is inserted into the positioning groove so that the outer sleeve shaft rotates when the sprocket rotates, thereby realizing the bicycle flywheel function, and at the same time improving the stability of the sprocket installation through the fixing component.

[0015] Preferably, the fixing assembly includes a fixing ring block, a fixing block and a fixing stop block, the fixing block is connected to the mounting block, the fixing stop block is arranged on the fixing block and can be abutted against the sprocket, and the fixing ring block is arranged on the outer sleeve shaft and can be abutted against the sprocket.

[0016] By adopting the above technical solution, the fixing block is set on the mounting block, and the sprocket is clamped from both sides by the fixing ring block and the fixed stop block to achieve fixation. The operation is simple and convenient, and the stability of the sprocket fixation is improved.

[0017] Preferably, a plurality of sprockets are provided, each sprocket is provided with a gasket, and each gasket is provided with an auxiliary groove for inserting a positioning block.

[0018] By adopting the above technical solution, multiple sprockets can improve the overall quality and increase the rotational inertia on the one hand, and can perform gear shifting operations on the other hand. The gaskets can reduce the friction and pressure damage that may occur between two adjacent sprockets, thereby improving durability.

[0019] Preferably, the first limiting block is provided with a rotating block, and the rotating block is located outside the first limiting groove.

[0020] By adopting the above technical solution, the rotating block is used to improve the convenience of rotating the first limiting block.

[0021] Preferably, the transmission assembly consists of a ratchet block, an internal ratchet gear and an auxiliary spring, the ratchet block is rotatably arranged on the assembly block, the auxiliary spring is arranged between the assembly block and the ratchet block, the internal ratchet gear is arranged on the inner wall of the assembly groove, and the ratchet block can be against the internal ratchet gear or inserted into the tooth groove of the internal ratchet gear.

[0022] By adopting the above technical solution, when the outer sleeve shaft rotates in the forward direction, the ratchet block is inserted into the tooth groove of the inner ratchet gear, thereby driving the inner sleeve shaft to rotate to realize transmission. When the outer sleeve shaft rotates in the reverse direction, the inner ratchet gear rotates to press against the ratchet block and compress the auxiliary spring. At this time, the inner sleeve shaft does not rotate, which is convenient for resting without pedaling during riding.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By arranging an inner sleeve shaft, an outer sleeve shaft, an assembly hole, an assembly block, an assembly groove, a first rolling groove, a second rolling groove, a first ball, a first limiting groove and a first limiting block, the inner sleeve shaft is inserted into the assembly hole of the outer sleeve shaft and the assembly block enters the assembly groove. When the first ball needs to be replaced, the first limiting block is pushed to rotate and disengage from the first limiting groove. At this time, the first ball can be taken out of the first rolling groove through the first limiting groove, and a new first ball is placed in the first limiting groove and enters the first rolling groove, and the first limiting block is inserted into the first limiting groove and rotated and tightened so that the first ball enters the second rolling groove on the first limiting block. The replacement is completed without disassembling the inner sleeve shaft and the outer sleeve shaft, thereby improving the convenience of ball replacement;

[0025] 2. By setting the mounting block, the third rolling groove, the fourth rolling groove and the second ball, the mounting block is threadedly inserted into the assembly groove, and the second ball rolls in the third rolling groove and the fourth rolling groove, limiting the position of the inner sleeve and reducing the friction force of the inner sleeve rotation;

[0026] 3. By setting the second limiting groove and the second limiting block, rotate the second limiting block so that the second limiting block is separated from the second limiting groove. At this time, the second ball can be removed, and a new second ball can be inserted into the second limiting groove, and then the second limiting block can be inserted into the second limiting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of a flywheel structure equipped with a ball bracket provided in an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view used to reflect the connection relationship between the inner sleeve shaft and the outer sleeve shaft.

[0029] Figure 3 It is a cross-sectional view used to reflect the structure of the transmission component.

[0030] Explanation of the accompanying drawings: 1. Outer sleeve; 11. Assembly hole; 12. Assembly groove; 13. First limiting groove; 131. First limiting block; 132. Second rolling groove; 133. Rotating block; 14. Positioning block; 2. Inner sleeve; 21. Assembly block; 211. First rolling groove; 22. Fourth rolling groove; 3. Mounting block; 31. Second limiting groove; 311. Second limiting block; 312. Third rolling groove; 313. Pushing block; 32. Auxiliary block; 4. First ball; 5. Second ball; 6. Sprocket; 61. Mounting hole; 62. Positioning groove; 63. Gasket; 631. Auxiliary groove; 7. Fixing assembly; 71. Fixing block; 72. Fixed block; 73. Fixing ring block; 8. Transmission assembly; 81. Ratchet block; 82. Inner ratchet gear; 83. Auxiliary spring. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The embodiment of the present application discloses a flywheel structure equipped with a ball support. Figures 1 to 3 It includes an inner sleeve shaft 2, an outer sleeve shaft 1 and several sprockets 6 connected to the outer sleeve shaft 1. An assembly hole 11 is provided through the center of the outer sleeve shaft 1, and an assembly groove 12 connected to the top wall of the outer sleeve shaft 1 is provided on the inner wall of the assembly hole 11. A transmission assembly 8 for driving the inner sleeve shaft 2 to rotate is provided between the inner sleeve shaft 2 and the outer sleeve shaft 1. The inner sleeve shaft 2 is inserted into the assembly hole 11, and an annular assembly block 21 is fixedly provided on the side wall of the outer sleeve shaft 1, and the assembly block 21 is inserted into the assembly groove 12. The transmission assembly 8 consists of a ratchet block 81, an inner ratchet gear 82 and an auxiliary spring 83. The inner ratchet gear 82 is fixedly provided on the inner wall of the assembly groove 12. One end of the ratchet block 81 is rotatably provided on the side wall of the assembly block 21, and the other end of the ratchet block 81 is connected to the side wall of the assembly block 21 through the auxiliary spring 83. The ratchet block 81 can be against the inner ratchet gear 82 or inserted into the tooth groove of the inner ratchet gear 82. The bottom wall of the assembly block 21 is provided with an annular first rolling groove 211, and the bottom wall of the outer sleeve 1 is provided with an annular first limiting groove 13 that communicates with the assembly groove 12. The outer sleeve 1 is provided with a first limiting block 131 that fits into the first limiting groove 13 and is threadedly connected to the inner wall of the first limiting groove 13. The top wall of the first limiting block 131 is provided with an annular second rolling groove 132. A first ball 4 that can pass through the first limiting groove 13 is rolled in the first and second rolling grooves 211 and 132. The diameter of the first ball 4 is slightly smaller than the width of the first limiting groove 13. A rotating block 133 is fixedly provided on the top wall of the first limiting block 131. The first limiting block 131 can be removed from the first limiting groove 13 and the first ball 4 can be replaced through the first limiting groove 13 without disassembling the inner sleeve 2 and the outer sleeve 1, making operation simple and convenient.

[0033] To reduce internal friction, refer to Figure 2 and Figure 3The outer shaft 1 is provided with a circular mounting block 3, which fits into the assembly groove 12 and is threadedly connected to the inner wall of the assembly groove 12. The top wall of the mounting block 3 is provided with a hexagonal auxiliary block 32. The mounting block 3 is provided with an annular second limiting groove 31 extending therethrough. The mounting block 3 is provided with a second limiting block 311, which fits into the second limiting groove 31 and is threadedly connected thereto. The top wall of the inner shaft 2 is provided with an annular third rolling groove 312, and the bottom wall of the second limiting block 311 is provided with an annular fourth rolling groove 22. Second balls 5 are rolled in the third and fourth rolling grooves 312 and 22. The diameter of the second limiting groove 31 is slightly larger than that of the second balls 5, allowing the second balls 5 to pass through the second limiting groove 31. A push block 313 is fixedly provided on the top wall of the second limiting block 311. The provision of the second balls 5 reduces friction during the rotation of the inner shaft 2, and the second limiting groove 31 allows for convenient replacement of the second balls 5.

[0034] In order to facilitate the disassembly and installation of sprocket 6, refer to Figure 2 and Figure 3 Several positioning blocks 14 are fixedly mounted on the outer wall of the outer sleeve shaft 1. A mounting hole 61 is provided through the sprocket 6, into which the outer sleeve shaft 1 is inserted. Several positioning grooves 62 are provided on the inner wall of the sprocket 6 mounting hole 61, into which the positioning blocks 14 fit. A ring of gaskets 63 is fixedly mounted on the bottom wall of the sprocket 6. The inner wall of the gaskets 63 is provided with auxiliary grooves 631 for the positioning blocks 14 to fit. The outer sleeve shaft 1 is provided with a fixing assembly 7 for fixing the sprocket 6. The fixing assembly 7 includes a fixing ring block 73, a fixing block 71, and a fixing block 72. The fixing block 71 is annular and fixedly mounted on the outer wall of the mounting block 3. The fixing block 72 is annular and fixedly mounted on the bottom wall of the fixing block 71. A distance greater than the thickness of the positioning blocks 14 is left between the inner wall of the fixing block 72 and the side wall of the outer sleeve shaft 1. The fixing ring block 73 is fixedly mounted on the side wall of the outer sleeve shaft 1, and the bottom wall of the fixing ring block 73 is flush with the bottom wall of the outer sleeve shaft 1. The fixed block 72 and the fixed ring block 73 respectively abut against the sprocket 6 at both ends. The sprocket 6 is mounted on the outer shaft 1 by inserting the positioning block 14 into the positioning groove 62, and is fixed by the fixed ring block 73 and the fixed block 72. By installing the mounting block 3 on the outer shaft 1, the sprocket 6 is fixed simultaneously, which improves the convenience of replacing the sprocket 6.

[0035] The implementation principle of a flywheel structure equipped with a ball bracket in an embodiment of the present application is: the first limit block 131 can be pushed to rotate and disengage from the first limit groove 13 by the rotating block 133. At this time, the first ball 4 can be taken out through the first limit groove 13. After replacement, the first limit block 131 is inserted into the first limit groove 13 and rotated and tightened. At this time, the first ball 4 rolls in the first rolling groove 211 and the second rolling groove 132. Similarly, the second limit block 311 can be pushed to rotate and disengage from the second limit groove 31 by the pushing block 313. After replacing the second ball 5 through the second limit groove 31, the second limit groove 31 is inserted into the second limit groove 31 and tightened to complete the ball replacement. There is no need to disassemble the outer sleeve shaft 1 and the inner sleeve shaft 2, which improves the convenience of ball replacement.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A flywheel structure equipped with a ball support, comprising a sprocket (6), an inner sleeve shaft (2) and an outer sleeve shaft (1), wherein the sprocket (6) is connected to the outer sleeve shaft (1), the outer sleeve shaft (1) is provided with an assembly hole (11), the inner sleeve shaft (2) is inserted into the assembly hole (11), the inner wall of the assembly hole (11) is provided with an assembly groove (12), the inner sleeve shaft (2) is provided with an assembly block (21), a transmission assembly (8) is provided between the inner sleeve shaft (2) and the outer sleeve shaft (1), the transmission assembly (8) is used to drive the inner sleeve shaft (2) to rotate by rotating the outer sleeve shaft (1), and is characterized in that: The assembly block (21) is provided with a first rolling groove (211), the outer sleeve shaft (1) is provided with a first limiting groove (13) communicating with the assembly groove (12), the outer sleeve shaft (1) is provided with a first limiting block (131) inserted into the first limiting groove (13), the first limiting block (131) is threadedly connected to the first limiting groove (13), the first limiting block (131) is provided with a second rolling groove (132), a first ball (4) is rollingly provided in the first rolling groove (211) and the second rolling groove (132), and the first ball (4) can pass through the first limiting groove (13).

2. A flywheel structure equipped with a ball bearing bracket according to claim 1, characterized in that: The outer sleeve shaft (1) is provided with a mounting block (3), the mounting block (3) is inserted into the assembly groove (12) and is threadedly connected to the assembly groove (12), the mounting block (3) is provided with a third rolling groove (312), the inner sleeve shaft (2) is provided with a fourth rolling groove (22), and second balls (5) are rollingly arranged in the third rolling groove (312) and the fourth rolling groove (22).

3. A flywheel structure equipped with a ball bearing bracket according to claim 2, characterized in that: The mounting block (3) is provided with a second limiting groove (31), the mounting block (3) is provided with a second limiting block (311) inserted into the second limiting groove (31), the second limiting block (311) is threadedly connected to the second limiting groove (31), the third rolling groove (312) is provided on the second limiting block (311), and the second ball (5) can pass through the second limiting groove (31).

4. The flywheel structure equipped with a ball bearing bracket according to claim 1, characterized in that: The outer sleeve shaft (1) is provided with a plurality of positioning blocks (14), the sprocket (6) is provided with a mounting hole (61), the inner wall of the mounting hole (61) is provided with a positioning groove (62), the outer sleeve shaft (1) is inserted into the mounting hole (61), the positioning blocks (14) are inserted into the positioning groove (62), and the outer sleeve shaft (1) is provided with a fixing assembly (7), and the fixing assembly (7) is used to fix the sprocket (6) on the outer sleeve shaft (1).

5. A flywheel structure equipped with a ball bearing bracket according to claim 4, characterized in that: The fixing assembly (7) comprises a fixing ring block (73), a fixing block (71) and a fixing block (72); the fixing block (71) is connected to the mounting block (3); the fixing block (72) is arranged on the fixing block (71) and can abut against the sprocket (6); and the fixing ring block (73) is arranged on the outer sleeve shaft (1) and can abut against the sprocket (6).

6. A flywheel structure equipped with a ball bearing bracket according to claim 4, characterized in that: A plurality of sprockets (6) are provided, each sprocket (6) is provided with a gasket (63), and each gasket (63) is provided with an auxiliary groove (631) for inserting a positioning block (14).

7. The flywheel structure equipped with a ball bearing bracket according to claim 1, characterized in that: The first limiting block (131) is provided with a rotating block (133), and the rotating block (133) is located outside the first limiting groove (13).

8. The flywheel structure equipped with a ball bearing bracket according to claim 1, characterized in that: The transmission assembly (8) comprises a ratchet block (81), an inner ratchet gear (82) and an auxiliary spring (83); the ratchet block (81) is rotatably arranged on the assembly block (21); the auxiliary spring (83) is arranged between the assembly block (21) and the ratchet block (81); the inner ratchet gear (82) is arranged on the inner wall of the assembly groove (12); and the ratchet block (81) can abut against the inner ratchet gear (82) or be inserted into the tooth groove of the inner ratchet gear (82).

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