Headstock convenient for threading

Abstract

The utility model discloses a headstock convenient for threading. The headstock convenient for threading comprises an upper bowl and a lower bowl consisting of a lower bearing and a lower plug, two arc-shaped wire passing holes for threading are formed in the periphery of the central through hole of the upper bowl in the upper bowl, the distance between the central axes of the two arc-shaped wire passing holes in the circumferential direction of the upper bowl is 90 degrees, and a separation block with the central angle of 40-45 degrees is formed between the two arc-shaped wire passing holes; the upper bowl is formed by assembling a dustproof cover, a wire passing plug, a wiring washer, an opening enclasping ring and an upper bearing which are sequentially arranged; the dustproof cover, the wire passing plug, the wiring washer and the opening enclasping ring are all provided with center holes for a bicycle front fork to penetrate through, and the center holes form a center through hole of the upper bowl. The utility model has the advantages of smooth threading, beautiful wiring, light weight and high strength, and is suitable for vehicle type installation and use.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle parts, in particular to a head tube cup that can facilitate wire threading. Background Art

[0002] With the improvement of people's living standards, the corresponding leisure level has also increased. Bicycles are no longer just a means of transportation, but also a fitness tool and an entertainment way for many cyclists. Competitive activities have also emerged, which further prompts bicycle manufacturers to continuously innovate to meet the vast market demands.

[0003] The head tube cup is an important part of a bicycle and plays a role in supporting and fixing the handlebar in the head tube of the bicycle. For various lines of traditional bicycles, such as bicycle brake lines, shift lines, electric wires, etc., the wire routing is generally very complex and unsightly when passing through the head tube cup, which directly affects the riding experience and safety of the bicycle. Therefore, how to make the wire routing of the head tube cup convenient and beautiful, while having high strength, is undoubtedly the expectation of the current market for new products. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a head tube cup that can facilitate wire threading, which has smooth wire threading, beautiful wire routing, light weight, and high strength, in view of the above-mentioned current situation of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problem is as follows:

[0006] A head tube cup that can facilitate wire threading includes an upper cup and a lower cup composed of a lower bearing and a lower plug; two arc-shaped wire passing holes for wire threading are formed on the outer periphery of the central through hole of the upper cup in the upper cup. The central axes of the two arc-shaped wire passing holes are circumferentially spaced 90 degrees on the upper cup, and a partition block with a central angle of 40 degrees to 45 degrees is formed between the two arc-shaped wire passing holes; the upper cup is assembled by a dust cover, a wire passing plug, a wire routing washer, an open clamping ring, and an upper bearing in sequence; the dust cover, the wire passing plug, the wire routing washer, and the open clamping ring are all formed with central holes for the front fork of the bicycle to pass through, and the multiple central holes form the central through hole of the upper cup.

[0007] To optimize the above technical solution, the specific measures taken further include:

[0008] The above-mentioned dust cover is elliptical, and two first arc-shaped notches opening outward are formed on the dust cover. A first partition block is formed between the two first arc-shaped notches; two first positioning bumps are formed on the bottom surface of the dust cover, and the two first positioning bumps are circumferentially spaced 180 degrees on the dust cover.

[0009] The top surface of the wiring washer is formed with an elliptical assembly groove cavity for positioning the dust cover and embedding it on the wiring washer, and the plane inside the assembly groove cavity is formed with first positioning pits for positioning and snapping two first positioning protrusions of the dust cover.

[0010] In the assembly groove cavity of the wiring washer mentioned above, two second arc-shaped slots with openings inwardly connected to its own center hole are formed at the positions corresponding to the two first arc-shaped slots, and a second spacer is formed between the two second arc-shaped slots; the wire plug tightening cover is installed between the dust cover and the wiring washer.

[0011] The central hole of the wiring washer and the two second arc-shaped notches together form a special-shaped cavity, and a concave support platform edge is pressed and formed around the periphery of the special-shaped cavity.

[0012] The outer periphery of the above-mentioned wire plug is formed with two arc-shaped wire plug pieces which are adapted to the shape of the corresponding second arc-shaped grooves, and each arc-shaped wire plug piece is formed with three circular wire holes; a spacer block snap-in for matching with the second spacer block is formed between the two arc-shaped wire plug pieces; the wire plug is positioned and embedded on the edge of the support platform of the special-shaped hole cavity.

[0013] The above-mentioned upper bearing is mounted on the open clamping ring. The upper part of the inner ring of the upper bearing is formed with a tapered thrust ramp, and the outer periphery of the open clamping ring is formed with a pressure-bearing ramp. The thrust ramp and the pressure-bearing ramp cooperate to force the center hole of the open clamping ring to deform and shrink in diameter to clamp the bicycle front fork.

[0014] The above-mentioned open clamping ring is provided with an opening which can cause itself to deform, expand or shrink in diameter. An inner buckle is formed on one side of the opening, and an outer buckle is formed on the other side of the opening. When the open clamping ring deforms and expands, the inner buckle and the outer buckle are buckled together to limit the expansion range of the open clamping ring. When the inner buckle and the outer buckle are deformed and shrunk in diameter, they are in contact with the side opposite to them in the opening to limit the shrinkage range of the open clamping ring.

[0015] The above-mentioned open clamping ring is formed with two third arc-shaped slots opening outward at positions corresponding to the two second arc-shaped slots, and a third spacer is formed between the two third arc-shaped slots; the arc-shaped wire-passing hole is composed of the first arc-shaped slot, the circular wire-passing hole on the arc-shaped wire-passing plug, and the second arc-shaped slot and the third arc-shaped slot; the dividing block is composed of the first spacer, the second spacer and the third spacer.

[0016] The bottom surface of the wiring washer is formed with two second positioning protrusions 180 degrees apart in the circumferential direction. Correspondingly, the top surface of the open clamping ring is formed with two second positioning pits for cooperating with the second positioning protrusions. The bottom surface of the wiring washer is also formed with a circle of sealing grooves, in which a sealing ring is positioned and installed, and the sealing ring is sealed with the top surface of the outer ring of the upper bearing.

[0017] Compared with the prior art, the head bowl of the present utility model is composed of an upper bowl and a lower bowl; two arc-shaped wire passing holes for threading are formed on the outer periphery of the central through hole of the upper bowl, and the central axes of the two arc-shaped wire passing holes are circumferentially spaced 90 degrees on the upper bowl, and a partition block with a central angle of 40 degrees to 45 degrees is formed between the two arc-shaped wire passing holes. In this way, the brake wire, gear shift wire, electric wire, etc. of the bicycle can pass through the upper bowl orderly and smoothly, thus avoiding the problems of complex and messy wire routing, poor aesthetics, poor riding experience and safety of traditional bicycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic perspective view of the present utility model;

[0019] Figure 2 is an exploded schematic view of the present utility model assembled with the head tube;

[0020] Figure 3 is a schematic front view of the dust cover of the present utility model;

[0021] Figure 4 is a schematic back view of the dust cover of the present utility model;

[0022] Figure 5 is a schematic front view of the wire passing plug of the present utility model;

[0023] Figure 6 is a schematic back view of the wire passing plug of the present utility model;

[0024] Figure 7 is a schematic front view of the wire routing washer of the present utility model;

[0025] Figure 8 is a schematic back view of the wire routing washer of the present utility model;

[0026] Figure 9 is a schematic front view of the open clamping ring of the present utility model;

[0027] Figure 10 is a schematic back view of the open clamping ring of the present utility model;

[0028] Figure 11 is a schematic semi-sectional view of the upper bearing of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following further describes in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0030] Figures 1 to 11 is a schematic view of the structure of the present utility model.

[0031] The reference numerals therein are: upper bowl A, central through hole A1, arc wire passing hole A2, partition block A3, lower bowl B, central hole K, dust cover 1, first arc notch 11, first partition block 12, first positioning bump 13, wire passing plug 2, arc wire passing plug piece 21, circular wire passing hole 22, partition block bayonet 23, wire routing washer 3, assembly cavity 31, first positioning pit 32, second arc notch 33, second partition block 34, support table edge 35, second positioning bump 36, ring sealing groove 37, opening clamping ring 4, pressure-bearing inclined surface 41, inner buckle 42, outer buckle 43, third arc notch 44, third partition block 45, second positioning pit 46, upper bearing 5, thrust inclined surface 51, sealing ring 6, lower bearing 7, lower plug 8, head tube 9.

[0032] As Figure 1 and Figure 2 shown, the present utility model discloses a head bowl capable of facilitating wire passing. The head bowl includes an upper bowl A and a lower bowl B. The upper bowl A is used for positioning and installing in the upper port of the head tube 9, and the lower bowl B can be positioned and installed in the lower port of the head tube 9. In this way, the bicycle front fork (not shown in each figure) can sequentially pass through the upper bowl A, the head tube 9 and the lower bowl B, and can rotate freely relative to the head tube 9 under the rotational support of the upper bowl A and the lower bowl B, thereby realizing the steering function of the bicycle. The lower bowl B of the present utility model is composed of a lower bearing 7 and a lower plug 8 which are assembled together up and down. The lower plug 8 is a non-closed circular ring body with an opening. As Figure 2 shown, it is formed with a conical inclined surface, and the conical inclined surface can cooperate with the inclined surface formed on the inner ring of the lower bearing 7, so that the lower plug 8 deforms and reduces in diameter when receiving a radial thrust, thereby enabling the lower plug 8 to tightly hold the bicycle front fork. The lower bearing 7 is a stamping bearing independently developed by the present invention, which has high strength and high cost performance.

[0033] The greatest contribution of the present utility model is that: two arc wire passing holes A2 for wire passing are formed on the outer periphery of the central through hole A1 of the upper bowl in the upper bowl A. The central axes of the two arc wire passing holes A2 are circumferentially spaced 90 degrees on the upper bowl A, and a partition block A3 with a central angle of 40 degrees to 45 degrees is formed between the two arc wire passing holes A2. On traditional bicycles, brake wires, shift wires, electric wires, etc. are all arranged on the head tube through tying or dedicated components, which makes the overall wire routing on the bicycle appear chaotic and complex, and very unsightly. The present utility model directly forms two arc wire passing holes A2 for wire passing in the upper bowl A, enabling the wires of the bicycle to pass through neatly through the arc wire passing holes A2. Not only is the wire routing beautiful and the wire passing easy, but also the safety of bicycle steering can be ensured, and the riding experience of the bicycle can be improved.

[0034] As Figure 2As shown in the figure, the upper bowl A of the present utility model is assembled and constituted by a dust cover 1, a wire passing plug 2, a wire routing washer 3, an open clamping ring 4 and an upper bearing 5 arranged in sequence. Among them: the dust cover 1, the wire passing plug 2, the wire routing washer 3 and the open clamping ring 4 are all formed with a central hole K for the bicycle front fork to pass through, and the central through hole A1 of the upper bowl A of the present utility model is jointly composed of these multiple central holes K.

[0035] In the embodiment, as Figure 3 shown, the dust cover 1 of the present utility model is elliptical, and two first arc-shaped notches 11 with openings facing outward are formed on the dust cover 1, and a first partition block 12 is formed between the two first arc-shaped notches 11. As Figure 4 shown, two first positioning bumps 13 are formed on the bottom surface of the dust cover 1 of the present utility model, and the two first positioning bumps 13 are circumferentially spaced 180 degrees on the dust cover 1. One of the two first positioning bumps 13 is arranged on the bottom surface of the first partition block 12.

[0036] In the embodiment, as Figure 7 and Figure 8 shown, an elliptical assembly groove cavity 31 is formed on the top surface of the wire routing washer 3 of the present utility model, and the outer peripheral contour of the assembly groove cavity 31 is adapted to the shape of the dust cover 1, so that the dust cover 1 can be positioned and installed in the assembly groove cavity 31 of the wire routing washer 3. Two first positioning pits 32 are also formed on the bottom plane of the cavity of the assembly groove cavity 31. After the dust cover 1 is assembled and installed with the assembly groove cavity 31 of the wire routing washer 3, the two first positioning bumps 13 of the dust cover 1 can be positioned and snapped into the first positioning pits 32, so as to realize the precise positioning and installation of the dust cover 1 and the wire routing washer 3.

[0037] In the embodiment, two second arc-shaped notches 33 are formed in the assembly groove cavity 31 of the wire routing washer 3 at positions corresponding to the two first arc-shaped notches 11. The openings of the two second arc-shaped notches 33 face inward, so as to be connected with the central hole K of the wire routing washer 3 to jointly form a special-shaped hole cavity with a special structure. A downward concave support edge 35 for positioning and supporting is formed by pressing around the special-shaped hole cavity. A second partition block 34 is formed between the two second arc-shaped notches 33 of the present utility model. The second partition block 34 is composed of a part of the bottom plane of the cavity of the assembly groove cavity 31, and one of the two first positioning pits 32 is formed on the second partition block 34.

[0038] In the embodiment, as Figure 5As shown in the figure, the wire passing plug 2 of the present utility model is in a circular ring shape, and two arc-shaped wire passing plug pieces 21 adapted to the shapes of the corresponding second arc-shaped notches 33 are formed on its outer periphery. Each arc-shaped wire passing plug piece 21 is formed with three circular wire passing holes 22. A thin skin is covered on the circular wire passing holes 22. When a certain circular wire passing hole 22 needs to be opened for wire routing, the skin thereon can be punctured. The circular wire passing holes 22 can enable various wires to have their own routing paths in the arc-shaped wire passing hole A2, avoiding interference with each other. A partition block bayonet 23 is formed between the two arc-shaped wire passing plug pieces 21 of the wire passing plug 2. The second partition block 34 of the wire routing washer 3 can be snapped into the partition block bayonet 23 after the wire passing plug 2 is assembled. The wire passing plug 2 of the present utility model is tightly pressed and installed between the dust cover 1 and the wire routing washer 3. The outer contour of the wire passing plug 2 is adapted to the shape of the special-shaped hole cavity of the wire routing washer 3. After installation, the wire passing plug 2 is just snap-fitted and supported on the support table edge 35 of the wire routing washer 3.

[0039] In the embodiment, the upper bearing 5 of the present utility model is sleeved on the open clamping ring 4, as Figure 11 shown. A tapered thrust inclined plane 51 is formed on the upper part of the inner ring of the upper bearing 5. As Figure 10 shown, a pressure-bearing inclined plane 41 is formed on the outer periphery of the open clamping ring 4. The thrust inclined plane 51 and the pressure-bearing inclined plane 41 support and cooperate with each other. The cooperation between the thrust inclined plane 51 and the pressure-bearing inclined plane 41 can force the central hole K of the open clamping ring 4 to deform and reduce in diameter. The open clamping ring 4 is also a non-closed circular body with an opening. The pressure borne by the upper bearing 5 will be transmitted to the pressure-bearing inclined plane 41 through the thrust inclined plane 51. After the open clamping ring 4 receives the radial thrust generated by the two inclined planes, it will reduce in diameter and deform, so as to tightly clamp the front fork of the bicycle.

[0040] As Figure 9 and Figure 10 shown, the open clamping ring 4 of the present utility model is made of carbon fiber material. It is the same as the open clamping ring on the traditional bicycle, and both have an opening that can cause themselves to deform, expand or reduce in diameter. However, the special feature of the present utility model is that an inner buckle 42 is formed on one side of the opening of the open clamping ring 4, and an outer buckle 43 is formed on the other side of the opening. When the open clamping ring 4 needs to be deformed and expanded for convenient installation, the inner buckle 42 and the outer buckle 43 can be buckled with each other to limit the expansion range of the open clamping ring 4, so as to avoid damage to the open clamping ring 4 due to excessive expansion. When deforming and reducing in diameter, the inner buckle 42 and the outer buckle 43 can be in abutting cooperation with the opposite side in the opening to limit the reduction range of the open clamping ring 4, so as to avoid damage to the open clamping ring 4 due to excessive reduction in diameter.

[0041] At positions corresponding to the two second arc-shaped notches 33 on the opening and clamping ring 4 of the present utility model, two third arc-shaped notches 44 opening outwards are further formed, and a third partition block 45 is formed between the two third arc-shaped notches 44. The arc-shaped wire passing hole A2 of the present utility model is jointly composed of the first arc-shaped notch 11, the circular wire passing hole 22 on the arc-shaped wire passing plug piece 21, the second arc-shaped notch 33 and the third arc-shaped notch 44. The partition block A3 is jointly composed of the first partition block 12, the second partition block 34 and the third partition block 45.

[0042] In the embodiment, two second positioning bumps 36 are formed on the bottom surface of the wire routing washer 3 of the present utility model at a circumferential distance of 180 degrees. Correspondingly, two second positioning pits 46 for positioning and cooperating with the second positioning bumps 36 are formed on the top surface of the opening and clamping ring 4. A sealing groove 37 is further formed on the bottom surface of the wire routing washer 3, and a sealing ring 6 is positioned and clamped in the sealing groove 37. The sealing ring 6 is hermetically mated with the top surface of the outer ring of the upper bearing 5, so as to prevent external dust from entering the upper bowl A.

[0043] The best embodiment of the present utility model has been illustrated, and various changes or modifications made by those of ordinary skill in the art will not depart from the scope of the present utility model.

Claims

1. A head bowl capable of achieving convenient line passing, comprising an upper bowl (A) and a lower bowl (B) composed of a lower bearing (7) and a lower plug (8); wherein: The upper bowl (A) is provided with two arc-shaped wire-passing holes (A2) for threading on the outer periphery of the central through hole (A1) of the upper bowl, the central axes of the two arc-shaped wire-passing holes (A2) are 90 degrees apart in the circumferential direction on the upper bowl (A), and a partition block (A3) with a central angle of 40 to 45 degrees is formed between the two arc-shaped wire-passing holes (A2); the upper bowl (A) is composed of a dust cover (1), a wire-passing plug (2), a wire-routing washer (3), an open clamping ring (4) and an upper bearing (5) which are arranged in sequence; the dust cover (1), the wire-routing plug (2), the wire-routing washer (3) and the open clamping ring (4) are all formed with a central hole (K) for passing a bicycle front fork, and a plurality of the central holes (K) constitute the central through hole (A1) of the upper bowl (A).

2. A headstock capable of achieving convenient line passing according to claim 1, characterized in that: The dust cover (1) is elliptical in shape, and is formed with two first arc-shaped notches (11) opening outward, and a first spacer (12) is formed between the two first arc-shaped notches (11); the bottom surface of the dust cover (1) is formed with two first positioning protrusions (13), and the two first positioning protrusions (13) are 180 degrees apart circumferentially on the dust cover (1).

3. The headstock capable of achieving convenient passing of the line according to claim 2 is characterized in that: The top surface of the wiring washer (3) is formed with an elliptical assembly groove (31) for positioning the dust cover (1) on the wiring washer (3), and the plane inside the assembly groove (31) is formed with a first positioning recess (32) for positioning and snapping two first positioning protrusions (13) of the dust cover (1).

4. The headstock capable of achieving convenient line passing according to claim 3 is characterized by: The assembly groove cavity (31) of the wiring washer (3) is formed with two second arc-shaped notches (33) opening inwardly connected to its own center hole (K) at positions corresponding to the two first arc-shaped notches (11), and a second spacer (34) is formed between the two second arc-shaped notches (33); the clamping cover of the wire plug (2) is installed between the dust cover (1) and the wiring washer (3).

5. The headstock capable of achieving convenient passing of the line according to claim 4 is characterized in that: The central hole (K) of the wiring washer (3) and the two second arc-shaped notches (33) together form a special-shaped cavity, and a concave support platform edge (35) is pressed and formed around the periphery of the special-shaped cavity.

6. The headstock capable of achieving convenient passing of the line according to claim 5 is characterized in that: The outer periphery of the wire plug (2) is formed with two arc-shaped wire plug pieces (21) that match the shape of the corresponding second arc-shaped slots (33), and each of the arc-shaped wire plug pieces (21) is formed with three circular wire holes (22); a spacer block snap-in (23) for snapping with the second spacer block (34) is formed between the two arc-shaped wire plug pieces (21); the wire plug (2) is positioned and embedded on the support platform edge (35) of the special-shaped cavity.

7. The headstock capable of achieving convenient passing of the line according to claim 6 is characterized in that: The upper bearing (5) is mounted on the open clamping ring (4), the upper inner ring of the upper bearing (5) is formed with a tapered thrust slope (51), and the outer periphery of the open clamping ring (4) is formed with a pressure-bearing slope (41). The thrust slope (51) and the pressure-bearing slope (41) cooperate to force the center hole (K) of the open clamping ring (4) to deform and shrink in diameter so as to clamp the front fork of the bicycle.

8. The headstock capable of achieving convenient passing of the line according to claim 7 is characterized in that: The open clamping ring (4) is provided with an opening that can deform, expand or shrink in diameter. An inner buckle (42) is formed on one side of the opening, and an outer buckle (43) is formed on the other side of the opening. When the open clamping ring (4) deforms and expands, the inner buckle (42) and the outer buckle (43) are buckled with each other to limit the expansion range of the open clamping ring (4). When the open clamping ring (4) deforms and shrinks in diameter, the inner buckle (42) and the outer buckle (43) are in contact with the side opposite to the opening to limit the shrinkage range of the open clamping ring (4).

9. The headstock capable of achieving convenient line passing according to claim 8, characterized in that: The open clamping ring (4) is formed with two third arc-shaped slots (44) opening outward at positions corresponding to the two second arc-shaped slots (33), and a third spacer (45) is formed between the two third arc-shaped slots (44); the arc-shaped wire-passing hole (A2) is composed of the first arc-shaped slot (11), the circular wire-passing hole (22) on the arc-shaped wire-passing plug (21), the second arc-shaped slot (33) and the third arc-shaped slot (44); the spacer (A3) is composed of the first spacer (12), the second spacer (34) and the third spacer (45).

10. The headstock capable of achieving convenient passing of the line according to claim 9, characterized in that: Two second positioning protrusions (36) are formed on the bottom surface of the wiring washer (3) at a circumferential distance of 180 degrees. Correspondingly, two second positioning recesses (46) are formed on the top surface of the open clamping ring (4) for matching with the second positioning protrusions (36). The bottom surface of the wiring washer (3) is also formed with a circle of sealing grooves (37), and a sealing ring (6) is positioned in the sealing groove (37). The sealing ring (6) is sealed with the top surface of the outer ring of the upper bearing (5).

Images