TWM614678U - Plane tooth and spiral hub structure - Google Patents

Abstract

A plane tooth and spiral hub structure includes a body, a clutch, a gear ring and a driving member. The body has an assembly space inside. The clutch part has an accommodating space inside the axial direction, a first helical tooth surface is formed in the accommodating space, a first tooth part is formed in the clutch part, and the clutch part is accommodated in the body of the body. Inside the assembly space. The inner part of the gear ring is provided with a second face tooth part, and the second face tooth part corresponds to the first face tooth part. The driving member includes a first driving part connected to a second driving part, a second helical tooth surface is formed on the second driving part, the driving member is installed at one end of the body, and the second helical tooth surface engages the clutch The first helical tooth surface of the piece. Since the various components of this creation are connected by means of meshing and screw locking, the engagement of each component is high, so this creation can transmit higher torsion force and has the effect of not being easy to slip.

Description

Plane tooth and spiral hub structure

This creation is related to the technical field of a hub, especially a flat tooth and spiral hub structure.

Generally speaking, the transmission system of a bicycle is carried out by a chain drive system and a chain drive system. When the rider rides, the pedal is used to drive the large chain drive to rotate, and then the flywheel is driven to rotate through the chain, and the flywheel will drive the rear wheel of the bicycle together. Rotate, thereby driving the bicycle forward. The hub of the rear wheel of the bicycle is provided with a hub that can be connected to the flywheel and the rim through spokes. The function of the hub is to transmit the rotating force of the flywheel to the outer rim to cause the entire rear wheel to rotate, thereby driving the entire bicycle forward. Therefore, the hub is also an indispensable part of the bicycle transmission.

Specifically, the bicycle has a driving mechanism including a pair of pedals, a pair of cranks, a front gear, a chain and a flywheel. The driving mechanism must transmit power through the hub, and the hub in general use only uses a one-way mechanism to make the bicycle move in a predetermined direction, often because the hub is used improperly or used for a long time, resulting in the hub in the hub The one-way mechanism wears out, which in turn causes the one-way mechanism and the friction surface to fail to provide a stable friction force and easily slip. Therefore, there is still a need to improve the conventional hub structure.

The purpose of this creation is to provide a flat tooth and spiral hub structure, which can make the hub achieve high torque and not easy to slip.

In order to achieve the above-mentioned purpose and effect, the present invention provides a flat tooth and spiral hub structure, which includes a body, a clutch, a gear ring and a driving member. The main body has an assembly space inside the axial direction. The clutch is a cylindrical member with an accommodating space penetrating the inside of the axial direction, a first helical tooth surface is formed on the inner wall surface of the accommodating space, and a first tooth part is formed on the inner wall of the accommodating space. At one end, the first helical tooth surface is adjacent to the first surface tooth portion, and the clutch is accommodated in the assembling space of the body. One end of the gear ring has a second face tooth part, the gear ring is installed in the assembly space of the body and adjacent to the clutch part, and the second face tooth part corresponds to the first face tooth part. The driving member includes a first driving part connected to a second driving part, a second helical tooth surface is formed on the periphery of one end of the second driving part, the driving member is installed at one end of the body, and the second driving part Extending into the assembling space of the body, the second helical tooth surface engages the first helical tooth surface of the clutch.

In one embodiment, the inner wall of the first driving part has a first threaded section, one end of the second driving part has a second threaded section, and the first threaded section engages the first threaded section to cause the The first driving part is connected to the second driving part.

In an embodiment, one end of the toothed ring has a fitting block, and the second surface tooth portion is formed on one side of the fitting block.

In accordance with the purpose and effect of this creation, the following is a detailed description of the preferred embodiments with the drawings.

10: Plane tooth and spiral hub structure

12: Bicycle

14: crank

16: chain

18: chainring

20: body

22: Assembly space

24: the first thread

300: The first bearing

302: The second bearing

304: The third bearing

32: First China Division

34: Second Washer

36: Mandrel

360: First Ring

362: The Second Ring

38: Waterproof ring

40: The first side cover

42: second side cover

44: O-ring

50: Clutch

52: accommodating space

54: First oblique tooth surface

56: first face tooth

60: gear ring

62: Mosaic block

64: second thread

66: second face tooth

70: drive member

72: The first drive part

74: The second drive part

76: The first thread segment

78: second thread segment

80: second helical tooth surface

Figure 1 is a schematic diagram of the position of a bicycle in this creative configuration.

Figure 2 is an exploded view of this creation.

Figure 3 is a cross-sectional view of this creation.

Please refer to Figure 1. This embodiment provides a flat tooth and spiral hub structure 10 set in a wheel set of a bicycle 12. When a rider steps on a pedal to input a power, a chain 16 and a chain 16 are driven by a crank 14 A sprocket 18 transmits the power, and finally transmits the power to the hub for the movement of the wheel set. The operation of the hub, crank, and chain is the same as that of a general bicycle.

Please refer to Figure 2, the plane tooth and spiral hub structure 10 includes a body 20, a bearing assembly 30, a first washer 32, a second washer 34, a spindle 36, a waterproof ring 38, a first One side cover 40, a second side cover 42, an O-ring 44, a clutch 50, a gear ring 60 and a driving member 70.

The main body 20 has an assembling space 22 inside the axial direction. The inner wall of the assembling space 22 has a first thread 24 adjacent to one end of the main body 20.

A first bearing 300, a second bearing 302 and a third bearing 304 are installed in the assembly space 22 of the body 20.

The mandrel 36 has a first ring 360 and a second ring 362 on the axially outer portion of the mandrel 36. The first ring 360 and the second ring 362 surround the mandrel 36, and the first ring 360 A distance from the second ring 362.

The clutch 50 is a cylindrical member with a penetrating inside in the axial direction. The clutch 50 has an accommodating space 52 inside. A first oblique tooth surface 54 is formed on the inner wall surface of the accommodating space 52 of the clutch 50. A first surface tooth portion 56 is formed at one end of the clutch 50, and the first surface tooth portion 56 is adjacent to the first helical tooth surface 54.

One end of the gear ring 60 has a fitting block 62, and the axial periphery of the gear ring 60 has a second thread 64. The toothed ring 60 has a second toothed portion 66 inside. Specifically, the second toothed portion 66 is formed on one side of the inserting block 62 and is located inside the toothed ring 60.

The driving member 70 includes a first driving portion 72 and a second driving portion 74. The inner wall of the first driving part 72 has a first threaded section 76, and the first threaded section 76 is adjacent to one end of the first driving part 72. One end of the second driving portion 74 has a second threaded section 78. A second helical tooth surface 80 is formed on the periphery of one end of the second driving portion 74, and the second helical tooth surface 80 is adjacent to the second threaded section 78. The second driving part 74 is connected to the first driving part 72, and the second threaded section 78 of the second driving part 74 is engaged with the first threaded section 76 of the first driving part 72.

Please refer to FIG. 3, the mandrel 36 passes through the assembly space 22 of the body 20. The first bearing 300 is leaned against the first ring edge 360 of the spindle 36, and the second bearing 302 is leaned against the second ring edge 362 of the spindle 36. The waterproof ring 38 is installed in the assembling space 22 of the main body 20 and rests on the first bearing 300. The first side cover 40 is installed at one end of the spindle 36, and a part of the first side cover 40 extends into the assembly space 22 of the main body 20.

The first washer 32 is installed on the axial periphery of the spindle 36 and leaned against the second bearing 302. The second washer 34 is installed in the assembling space 22 of the main body 20, and the second washer 34 is leaned against the inner wall of the assembling space 22. The clutch 50 is installed in the assembly space 22 of the main body 20. The gear ring 60 is installed in the assembling space 22 of the body 20 and abuts against the second washer 34, and the second thread 64 of the gear ring 60 is engaged with the first thread 24 of the body 20. The gear ring 60 is adjacent to the clutch 50, and the second surface tooth portion 66 of the gear ring 60 is engaged with the first surface tooth portion 56 of the clutch 50.

The driving member 70 is connected to the body 20. The second driving portion 74 extends into the assembly space 22 of the main body 20, and a part of the second driving portion 74 extends into the accommodating space 52 of the clutch 50 (see FIG. 2). The second helical tooth surface 80 of the second driving portion 74 engages the first helical tooth surface 54 of the clutch 50. The first driving portion 72 is located outside one end of the main body 20.

The third bearing 304 is installed inside the first driving part 72, and the third bearing 304 rests against the inner wall surface of the first driving part 72. The O-ring 44 is sleeved on the mandrel 36. The second side cover 42 is installed on the other end of the spindle 36, and a part of the second side cover 42 extends into the inside of the first driving portion 72.

According to the above, since the various components of this creation are connected by means of meshing and screw locking, so that each component has a high degree of engagement, this creation can transmit higher torsion force and has the effect of not being easy to slip.

The above are the preferred embodiments and design drawings of this creation, but the preferred embodiments and design drawings are only examples and are not used to limit the scope of rights of this creation technique. Any equivalent technical means or the following The implementation of the scope of rights covered by the content of the "Scope of Patent Application" does not depart from the scope of this creation and is the scope of the applicant's rights.

20: body

22: Assembly space

24: the first thread

300: The first bearing

302: The second bearing

304: The third bearing

32: First China Division

34: Second Washer

36: Mandrel

360: First Ring

362: The Second Ring

38: Waterproof ring

40: The first side cover

42: second side cover

44: O-ring

50: Clutch

54: First oblique tooth surface

56: first face tooth

60: gear ring

64: second thread

66: second face tooth

70: drive member

72: The first drive part

74: The second drive part

76: The first thread segment

78: second thread segment

80: second helical tooth surface

Claims (3)

A plane tooth and spiral hub structure, which comprises: a body with an assembly space inside the axial direction; a clutch part, which is a cylindrical member with a accommodating space penetrating the inside in the axial direction, and a first helical tooth The surface is formed on the inner wall surface of the accommodating space, a first tooth part is formed at one end of the clutch part, the first helical tooth surface is adjacent to the first tooth part, and the clutch part is accommodated in the body In the assembly space; a toothed ring with a second surface tooth portion, the toothed ring is installed in the assembly space of the body and adjacent to the clutch, the second surface tooth portion corresponds to the first surface Tooth portion; a drive member, which includes a first drive portion connected to a second drive portion, a second helical tooth surface is formed on the periphery of one end of the second drive portion, the drive member is installed at one end of the body, wherein The second driving portion extends into the assembly space of the body, and the second helical tooth surface engages the first helical tooth surface of the clutch. The flat tooth and spiral hub structure according to claim 1, wherein the inner wall of the first driving part has a first threaded section, one end of the second driving part has a second threaded section, and the first threaded section Engaging the first threaded section causes the first driving part to be connected to the second driving part. The flat tooth and spiral hub structure according to claim 1, wherein one end of the gear ring has a fitting block, and the second surface tooth part is formed on one side of the fitting block.

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