TWI838871B - Waterproof structure for wiring inside bicycle headset - Google Patents

Abstract

The present invention is a waterproof structure for internal wiring of a bicycle head bowl, which comprises a head bowl assembly installed between the outer side of a front fork tube and the upper end of the inner side of a head tube. The head bowl assembly is axially installed by a bearing, a seat, and a collar. A waterproof member and an upper cover are stacked on the collar. In particular, the waterproof member is in the shape of a closed ring, and the peripheral surface is provided with a ring connected to the seat for the wire to pass through. The inner ring of the wire hole has an inner elastic edge that protrudes radially, so that the inner diameter of the inner elastic edge is smaller than the inner diameter of the wire. Therefore, when the wire passes through the inner hole of the inner elastic edge, the inner elastic edge elastically bends and fits the outer side of the wire, so that the inner elastic edge blocks the gap between the wire hole and the wire, effectively preventing water or mud from penetrating into the head tube through it, and improving the waterproof and dustproof functions.

Description

Waterproof structure for wiring inside bicycle headset

The present invention relates to a technical field involving transportation equipment, a wiring structure of a bicycle's front bowl, which allows the wires to be hidden inside the head tube, and in particular, provides better waterproofing between the wires and the head tube.

According to the bicycle association, the cables and other wires that activate and control the functions of the bicycle were arranged. In the past, these wires would be laid along the outside of the bicycle frame. However, in order to avoid the wires being exposed and causing a messy appearance, the wires are now hidden in the space inside the bicycle frame, such as passing through the handlebar tube, the front bowl, and the front fork tube to the inside of the frame, such as the new patent case of "Improvement of the Front Bowl Structure for Internal Cable Routing" with certificate number M619006 <hereinafter referred to as: cited case 1>, cited case 1 includes: a front fork tube; a head tube; a bearing; a seat, preset A through hole is provided at the position; an upper cover is provided with a through hole on one side, which is used to mutually penetrate the upper part of the front fork tube and the head tube, and then the bottom of the seat and the bearing are mutually sleeved, and then the bearing and the seat are sleeved on the upper part of the head tube, so that the upper cover is covered on the bearing and the seat, and the seat, the upper cover and the front fork tube are mutually penetrated; through the above-mentioned components, cables such as brake cables or gearshift cables can be penetrated into the seat through hole through the upper cover, and enter the interior of the head tube, so that the cables will not be exposed to the outside, avoid line clutter, and provide cable hiding and protection.

For example, the new patent case of "front bowl with wire-binding structure" with certificate number M497135 <hereinafter referred to as: cited case 2>, cited case 2 includes two bowl seats for being arranged at both ends of the front tube of a bicycle frame to bind the brake wire, each bowl seat includes a bowl, a bearing assembly assembled between the bowl and the straight tube of the bicycle front fork, and a cover for fixing the bearing assembly to the inside of the bowl; a bearing assembly assembled between the bowl and the straight tube of the bicycle front fork, and a cover for fixing the bearing assembly to the inside of the bowl; its characteristics are: the bowl has a set of connecting The assembly part and a sleeve part that is gathered from the assembly part, the assembly part and the sleeve part are connected by a sleeve space, the sleeve part is used to be sleeved with the end of the front tube of the frame, the assembly part is formed into a ring wall structure and has an inner surface and an outer surface opposite to each other and defines a port, the inner surface is provided with an annular convex rib, so that the bearing assembly is assembled on the port through the cover and is assembled and fixed between the annular convex rib and the port, and the assembly part is provided with a plurality of through holes that penetrate the inner and outer surfaces between the annular convex rib and the sleeve part, so that the brake line passes through the through holes and enters the interior of the front tube of the frame to be gathered.

However, the technical contents of the previous cases cited show that the wires pass through the through holes of the upper cover and out of the head tube, and the diameter of the through holes of the upper cover is much larger than the diameter of the wires, resulting in too much space between the outer side of the wires and the through holes, and a lack of waterproof design, which allows water to flow through the through holes and penetrate into the head tube, causing the components such as the front bowl inside the head tube to rust and be damaged, reducing the service life.

The main purpose of the present invention is to provide a waterproof structure for the inner wiring of the bicycle head bowl, which mainly enhances the waterproof function of the head bowl at the inner wiring, and a waterproof part is set in the upper cover. The waterproof part has an elastic inner edge, which can elastically fill the gap between the wire diameter and the inner surface of the wire hole of the upper cover, effectively blocking water and sediment from penetrating the channel space in the head tube.

The invention is a waterproof structure for internal wiring of a bicycle head bowl, which includes a head bowl assembly installed between the outer side of a front fork tube and the inner upper end of a head tube. The head bowl assembly includes: a bearing installed at the inner upper end of the head tube; a seat on the bearing, with a set of holes in the center, and a plurality of elongated through holes on the outer peripheral surface of the set of holes. A C-shaped tie ring is plugged into the set of holes of the seat, and the inner side surface of the tie ring is for the front fork tube to extend therethrough; a waterproof member, which is in the shape of a closed annular seat, with a through hole in the center, and a plurality of elongated through holes on the outer peripheral surface of the through hole. On the ring surface of the edge, there are several wire holes connected to the through hole of the support seat for the wires to pass through. The wire hole has an inner elastic edge that protrudes radially from the inner ring side. The center of the inner elastic edge is an inner hole. The diameter of the inner hole is smaller than the diameter of the wire, so that the wire passes through the inner hole. The inner elastic edge is attached to the wire to prevent moisture from penetrating into the inside of the head tube; an upper cover is located on the top of the head tube and is used to cover the waterproof part. A through hole is provided in the center of the upper cover for the front fork tube to pass through. Several through holes are cut on the cover surface. The through holes are connected to the wire hole and the through hole for the wires to pass through.

Therefore, the present invention provides the following effects:.

1. The present invention is mainly about the structural arrangement of the wiring in the head bowl, which is designed to have an effective waterproof and dustproof function. It is a waterproof part located below the upper cover. It has an inner rim radially extending from the inner side of the cable hole. The inner hole formed in the center of the inner rim has a smaller diameter than the cable hole and the cable diameter. When the cable passes through the inner hole in the center of the inner rim, the outer ring surface of the inner rim is moved to form an elastic bending deformation, so that the inner edge of the inner rim is more closely in contact with the outer side of the cable, filling and sealing the space between the outer side of the cable and the inner wall of the cable hole, preventing moisture and sand from easily penetrating from the cable hole into the head tube, effectively increasing the service life of the components of the headset in the head tube, and is quite practical and effective with the stability of product use.

2. The inner edge of the present invention forms an inner hole with a diameter that is significantly smaller than that of ordinary wires. Therefore, wires of different diameters can be within the allowable range. The inner edge will be elastically bent by the wires and adhere to the outer surface of the wires.

[The present invention]

10: Front fork tube

20: Head tube

21: Inner groove

25: Headset on the front of the car

30: Bearings

32: Seat

321: Hole

322: convex part

323: First cone

33, 33’: Perforation

35: Ring

351: Second cone

40: Waterproof parts

41: Through hole

42: Fixed part

44: Wire hole

45: Inner edge

451: Inner hole

46: Ring wing

50: Upper cover

51:Through hole

52: Reach the groove

53:Through hole

54: Annular convex part

60: O-ring

70: Wire

Figure 1 is a three-dimensional appearance diagram of a preferred embodiment of the present invention.

Figure 2 is a three-dimensional component exploded view of a preferred embodiment of the present invention.

Figure 3 is a combined cross-sectional view of a preferred embodiment of the present invention.

Figure 4 is an enlarged cross-sectional view of the upper cover and waterproofing area of a preferred embodiment of the present invention.

Figure 5 is a three-dimensional cross-sectional view of the wiring inside the head tube of a preferred embodiment of the present invention.

Figure 6 is a combined cross-sectional view of the wiring inside the head tube of a preferred embodiment of the present invention.

Figure 7 is an enlarged cross-sectional view of the wire passing through the waterproof area of the preferred embodiment of the present invention.

Figure 8 is a three-dimensional component exploded view of another preferred embodiment of the present invention.

The present invention is a waterproof structure for internal wiring of a bicycle headset, which is basically as shown in Figures 1 and 2, and includes a front fork tube 10 and a head tube 20. A headset assembly is installed at the upper and lower ends of the inner side of the head tube 20. The main feature is the upper headset assembly 25 located at the upper end of the head tube 20. The head tube 20 is sleeved on the outer side of the front fork tube 10. The headset assembly 25 is separated between the inner side of the head tube 20 and the outer side of the front fork tube 10. The head tube 20 is provided with an inner groove 21 at the upper end. The upper headset assembly 25 including a bearing 30, a bearing seat 32, a collar 35, a waterproof member 40, and an upper cover 50 are axially installed in sequence in the inner groove 21.

As shown in FIGS. 2, 3 and 4, the bearing 30 is forced to be installed on the inner side wall of the inner groove 21. A ring-shaped seat 32 is sleeved on the bearing 30. A set hole 321 is formed in the center of the seat 32. The set hole 321 is for the front fork tube 10 to extend out. A convex portion 322 is provided at the bottom of the set hole 321 for concave-convex matching with the inner ring surface of the bearing 30. The inner ring surface of the set hole 321 and the convex portion 322 is a first tapered surface 323 with a tapered shape. At least one long arc-shaped through hole 33 is cut out for the wire 70 to pass through, and a C-shaped ring 35 is plugged into the sleeve hole 321 of the seat 32. The outer side of the ring 35 is a second cone 351, which is used to match the first cone 323, so that the ring 35 is matched by the cone and the ring diameter is further reduced, so that the outer ring side of the front fork tube 10 that passes through the inner ring surface of the ring 35 can be rotated relative to the inner side surface of the ring 35; and

The waterproof member 40 is in the shape of a closed annular seat, with a through hole 41 formed in the center that is larger than the diameter of the front fork tube 10 and is provided for extension. On the annular surface of the waterproof member 40, a stopper 42 is provided that is connected to the through hole 33 of the seat 32. A number of wire holes 44 are provided on the stopper 42. The wire holes 44 are shown in Figures 3 and 4. A ring inner flexure 45 is provided radially protruding from the inner ring side near the upper end. The inner flexure 45 is a thin elastic ring. When the inner flexure 45 is not deformed and is horizontal, an inner hole 451 is formed in the center of the inner flexure 45. The diameter of the inner hole 451 is not only smaller than the diameter of the wire hole 44, but also smaller than the diameter of the wire 70.

The upper cover 50 is used to cover the waterproof component 40 and is exposed at the top of the head tube 20. A through hole 51 is provided in the center of the upper cover 50 for the front fork tube 10 to extend out. A groove 52 is provided at the bottom of the upper cover 50 to cover the waterproof component 40. A long arc-shaped through hole 53 is cut on the cover surface. The through hole 53 corresponds to the fixed part 42 of the waterproof component 40 and is matched with the fixed part 42 in a concave-convex manner, so that the wire hole 44 is exposed to the outside through the through hole 53. The through hole 41 of the waterproof component 40 extends through the front fork tube 10 and is arranged at the upper end of the head tube 20 corresponding to the top surface of the tie ring 35. The upper cover 50 extends through the front fork tube 10, so that the groove 52 and the through hole 53 are concave-convexly engaged with the waterproof component 40, and the assembly of the headset 25 on the front of the vehicle is completed, as shown in Figures 1 and 3.

Please refer to Figures 5, 6, and 7, which show the situation where the wire 70 is routed inside the head tube 20. The wire 70 passes through the through hole 33 of the seat 32 from the head tube 20. Since the through hole 33 is connected with the wire hole 44 and the through hole 53, the wire 70 passes through the through hole 33, the wire hole 44, and the through hole 53, and passes through the head tube 20 to pull the wire to the set position, such as the handlebar position.

Please refer to Figures 3, 4, 6 and 7. The through hole 53 of the upper cover 50 is provided with an annular protrusion 54 on one side close to the front fork tube 10, so that the wire hole 44 fits with it to increase the waterproof tightness. In addition, the entire outer edge of the waterproof member 40 is provided with an annular side wing 46 extending downward and outward to prevent moisture from entering the headset assembly from between the upper cover 50 and the head tube 20.

Please refer to Figures 2 to 7 again. An O-ring 60 is installed on the inner edge of the upper end of the through hole 51 of the upper cover 50, so that the water above the front fork tube 10 is blocked by the O-ring 60, preventing the water from entering the headband from between the front fork tube 10 and the upper cover 50.

Please continue to refer to Figure 8, which is a three-dimensional component exploded view of another preferred embodiment of the present invention. The first conical surface 323 of the support 32 that is tightly fitted with the second conical surface 351 of the tie ring 35 does not need to be a completely closed ring, and can be broken at the joint with the through hole 33' to become an opening.

The feature of the present invention is that when the wire 70 passes through the wire hole 44, it passes through the inner hole 451 at the center of the inner elastic edge 45 on the inner side of the wire hole 44. Since the diameter of the inner hole 451 is smaller than the diameter of the wire 70, the upward pulling action of the outer side of the wire 70 triggers the thin inner side of the inner elastic edge 45 to form an upward elastic bend of the inner elastic edge 45. The elastic bend of the inner elastic edge 45 is attached to the outer side of the wire 70 to form a fitting contact state, thereby filling and sealing the gap between the outer side of the wire 70 and the wire hole 44, blocking mud and water from entering the channel space of the wire hole 44, so it has good waterproof and dustproof properties.

In summary, the invention disclosed in this paper is indeed industrially practical and innovative, and its structure has never been seen in books or publicly used. It truly meets the requirements for new patent applications. We sincerely request the Bureau to review and approve the patent as soon as possible. We would be very grateful.

It should be noted that the above is a specific implementation example of the present invention and the technical principles used. If the changes made according to the concept of the present invention still do not exceed the spirit covered by the instructions and drawings, they should be stated within the scope of the present invention.

10: Front fork tube

20: Head tube

21: Inner groove

25: Headset on the front of the car

30: Bearings

32: Seat

321: Hole

322: convex part

323: First cone

33: Perforation

35: Ring

351: Second cone

40: Waterproof parts

41: Through hole

42: Fixed part

44: Wire hole

45: Inner edge

50: Upper cover

51:Through hole

53:Through hole

Claims (7)

A waterproof structure for internal wiring of a bicycle headset comprises a headset assembly mounted between the outer side of a front fork tube and the inner upper end of a head tube. The headset assembly comprises: a bearing mounted on the inner upper end of the head tube; a seat on the bearing, a set of holes in the center, and a plurality of elongated through holes on the outer circumference of the set of holes. A C-shaped tie ring is plugged into the hole, and the inner side of the tie ring is for the front fork tube to extend therethrough; a waterproof member is in the shape of a closed annular seat, and the center is a through hole. A plurality of wire holes for wires to extend through are formed on the annular surface around the through hole, which are connected to the through hole of the seat. The area where the waterproof member forms the wire holes is formed by a protruding hole on the annular surface, which is connected to the through hole of the seat. The fixing part is provided with the wire hole, and the upper cover is provided with the through hole corresponding to the fixing part to form a concave-convex fit. The wire hole is provided with an inner elastic edge which is elastically bendable and radially protrudes from the inner ring side. The center of the inner elastic edge is an inner hole, and the diameter of the inner hole is smaller than the diameter of the wire, so that the wire passes through the inner hole, and the inner elastic edge is attached to the wire to prevent water from penetrating into the head tube. a top cover, which is located at the inner edge of the upper end of the top cover, used to prevent moisture from penetrating into the front fork tube and covering the upper inner part on the waterproof part. A through hole is provided in the center of the top cover, through which the front fork tube can extend out. Several through holes are cut on the cover surface, which are connected with the wire hole and the through hole, and can be used for wires to extend through. An O-ring is located at the upper edge of the top end of the head tube, used to prevent moisture from penetrating into the front fork tube. As described in claim 1, the internal cable routing waterproof structure of the bicycle head bowl, wherein an inner groove is provided inside the upper end of the inner side of the head tube, and the head bowl assembly is installed in the inner groove. As described in claim 1, the inner cable routing waterproof structure of the bicycle head bowl, wherein the seat of the head bowl assembly has a convex portion at the bottom of the sleeve hole for concave-convex matching with the inner ring surface of the bearing, the sleeve hole and the inner ring surface of the convex portion are a first tapered surface with a taper, and the outer side surface of the tie ring is a second tapered surface for matching with the corresponding first tapered surface. As described in claim 1, the internal wiring waterproof structure of the bicycle head bowl, wherein the bottom surface of the upper cover is concavely provided with a groove, so that the groove cover is arranged on the waterproof part. As described in claim 1, the waterproof structure for internal wiring of the bicycle head bowl has an annular protrusion protruding from the inner side of the through hole of the upper cover so that the wire hole fits with it. As described in claim 1, the inner cable routing waterproof structure of the bicycle head bowl, wherein the outer edge of the waterproof component is provided with an annular side wing extending downward and outward to prevent moisture from entering the head bowl assembly from between the upper cover and the head tube. As described in claim 1, the internal cable routing waterproof structure of the bicycle head bowl, wherein the first conical surface of the seat that is tightly fitted with the second conical surface of the tie ring is disconnected from the through-hole joint and is in an unclosed ring shape.

Images