TWI722807B - Wire fixing structure - Google Patents

Abstract

An electric wire fixing structure for a bicycle hub. An electric wire of the hub motor extends from the inside to the outside of the hub. The electric wire is characterized in that the electric wire is provided with two positioning members arranged at intervals. In this way, the wire has a longer fixed range and can prolong its service life.

Description

Wire fixing structure

The invention relates to a wire fixing structure of a bicycle motor hub, which can prolong the service life of the wire.

Most bicycle electric hub cables extend from the hub spindle (or around the spindle) to avoid obstacles when the bicycle wheel rotates. However, this design will make the cables form an angle of nearly 90 degrees. In addition, some products The wire is extended from both ends of the mandrel. Therefore, the bent wire will be located on the outermost side. There is no protection measure, which will easily reduce the life of the wire.

The invention provides a wire fixing structure for a bicycle hub. A motor is arranged inside the hub, and a wire of the motor extends from the inside to the outside of the hub. The wire is characterized in that the wire is provided with two positioning members arranged at intervals. In this way, the wire has a longer fixed range and can prolong its service life.

Further, the positioning parts are sleeved on the surface of the wire, and the tube walls of the two positioning parts have an axial opening, and the tube wall of the mandrel has an axial guide groove to guide the wires along the tube wall surface of the mandrel to external. In addition, a radial guide groove is provided near the axial opening of the outer positioning member to limit the angle of the wire.

Further, a ball bearing shaft is arranged between the positioning parts, thereby reducing the total length of the mandrel.

The following description defines the inside and outside of the hub shell as the inside and the outside, so as to conform to the common understanding of those skilled in the art.

Please refer to Figures 1 to 3, which illustrate a wire fixing structure of a bicycle hub. The hub 10 has a housing 11, and a motor assembly (not shown) is arranged inside the hub 10. The electrical wires 60 of the motor assembly are piped from the hub 10 and the spindle 50. The wall extends to the outside, and the surface of the wire 60 is sleeved along the mandrel 50 with an inner positioning member 20 and an outer positioning member 40. The positions of the inner positioning member 20 and the outer positioning member 40 for fixing the electric wires are arranged at intervals. Therefore, the electric wire 60 generates two positioning positions along the mandrel 50, thereby extending the fixing range of the electric wire 60 and prolonging the service life of the electric wire 60.

In this embodiment, the internal positioning member 20 has a C-shaped tube wall 21. The width of an axial opening 22 of the C-shaped tube wall 21 is at least equal to the diameter of the wire 60; and the ring-shaped tube wall 23 is located on the C-shaped tube wall. 21 to form the first positioning position of the wire 60. The external positioning member 40 has a C-shaped tube wall; and a ring-shaped cover 42 is located on one side of the C-shaped tube wall to be installed in the opening of the housing 11. During installation, the C-shaped pipe wall of the outer positioning member 40 is far away from the inner positioning member 20, so the inner ring surface of the ring-shaped cover 42 forms the second positioning position of the wire 60. The tube wall surface of the mandrel 50 has an axial guide groove 51, and the ring-shaped tube wall 23 and the inner ring surface of the ring-shaped cover 42 form a depression to conform to the contour of the electric wire 60. Therefore, the electric wire 60 is positioned on the inner positioning member 20 and the mandrel 50 and external positioning member 40. However, the inner positioning member 20 and the outer positioning member 40 can also fix the wire 60 on the surface of the mandrel 50 by a tight fit.

In this embodiment, one end of the spindle 50 has a nut 55 to be locked on the outside of the external positioning member 40. Therefore, the bend of the wire 60 will be located between the nut 55 (or quick release handle) and the external positioning member 40. Between the axial openings 41 and located on the tube wall of the mandrel 50, the outer ring wall of the ring-shaped cover 42 of the outer positioning member 40 is also provided with a radial guide groove 43 to locate the angle of the electric wire 60, which can reduce the electric wire 60 Get in touch with the outside.

In this embodiment, the outer ring wall of the ring-shaped cover 42 of the external positioning member 40 is provided with a waterproof ring 45 encapsulated in the opening of the housing 11 to prevent water vapor from entering the interior of the hub 10. In addition, a ball bearing 30 is provided between the inner positioning member 20 and the outer positioning member 40. The inner ring and outer ring of the ball bearing 30 are respectively mounted on the C-shaped pipe wall 21 and the hub 50 housing 11, which can save the cost of reducing the spindle 50 The total length.

10: Hub 11: shell 20: Internal positioning parts 21: C-shaped pipe wall 22: opening 23: Annular tube wall 30: Ball bearing 40: External positioning piece 41: opening 42: Ring type cover 43: guide groove 45: Waterproof ring 50: Mandrel 51: Guide groove 55: Nut 60: Wire

Figure 1 is an external view of the hub body. Figure 2 is an exploded view of the components of the hub wire fixing structure. Figure 3 is a cross-sectional view of the hub wire fixing structure.

20: Internal positioning parts

21: C-shaped pipe wall

22: opening

23: Annular tube wall

30: Ball bearing

40: External positioning piece

41: opening

42: Ring type cover

43: guide groove

50: Mandrel

51: Guide groove

60: Wire

Claims (7)

A wire fixing structure for a bicycle hub. The hub has a spindle and an electric wire extending from the inside to the outside of the hub along the spindle. The electric wire is characterized in that the electric wire is provided with two positioning members arranged at intervals, and among the positioning members One is provided with a radial guide groove. The wire fixing structure according to claim 1, wherein the tube wall of the positioning members has an axial opening. The wire fixing structure according to claim 1, wherein the mandrel has a shaft guide groove to position the wire. The wire fixing structure according to claim 1, wherein a ball bearing shaft is arranged between the positioning members. The wire fixing structure according to claim 1, wherein at least one of the positioning members has a waterproof ring. The wire fixing structure according to claim 1, wherein the wire forms a bend on the tube wall of the mandrel. The wire fixing structure according to any one of claims 1 to 6, wherein the positioning members are sleeved on the wire.

Images