Headstock convenient for threading

Abstract

The invention discloses a headstock bowl capable of realizing convenient wire passing. The headstock bowl 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 wire passing is smooth, the wire passing is beautiful, the weight is light, the strength is high, and the wire is suitable for vehicle installation and use.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle parts, in particular to a bicycle head cup capable of achieving convenient crossing of a line. Background Art

[0002] As people's living standards improve, their leisure levels are also improving. Bicycles are no longer just a means of transportation, but also a fitness tool. They are also a form of entertainment for many cyclists and have also spawned competitive activities. The pursuit of better quality and faster bicycles is driving bicycle manufacturers to continuously innovate to meet the vast market demand.

[0003] The front wheel is an important part of the bicycle, supporting and fixing the handlebars in the head tube. The various lines of traditional bicycles, such as bicycle brake lines, gear lines, and electrical wires, are generally very complicated and unsightly when passing through the front wheel, which directly affects the riding experience and safety of the bicycle. Therefore, how to make the front wheel line 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 present invention is to provide a headstock that can facilitate threading, has smooth threading, beautiful wiring, light weight and high strength, in view of the current status of the above-mentioned prior art.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A front bowl capable of facilitating wire threading comprises an upper bowl and a lower bowl composed of a lower bearing and a lower plug; two arc-shaped wire threading holes for threading are formed on the outer periphery of a central through hole of the upper bowl, the central axes of the two arc-shaped wire threading holes are 90 degrees apart circumferentially on the upper bowl, and a partition block with a central angle of 40 to 45 degrees is formed between the two arc-shaped wire threading holes; the upper bowl is assembled by a dust cover, a wire threading plug, a wire routing washer, an open clamping ring and an upper bearing which are arranged in sequence; the dust cover, the wire threading plug, the wire routing washer and the open clamping ring are all formed with a central hole for passing a bicycle front fork, and a plurality of central holes constitute the central through hole of the upper bowl.

[0006] To optimize the above technical solutions, the specific measures taken also include: The dust cover is oval in shape, and is formed with two first arcuate notches opening outward, with a first spacer formed between the two first arcuate notches; the bottom surface of the dust cover is formed with two first positioning protrusions, which are 180 degrees apart circumferentially on the dust cover.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] Compared with the prior art, the head bowl of the present invention is composed of an upper bowl and a lower bowl; wherein the upper bowl is formed with two arc-shaped wire-passing holes for threading on the outer periphery of its central through hole, the central axes of the two arc-shaped wire-passing holes are 90 degrees apart in the circumferential direction on the upper bowl, and a partition block with a central angle of 40 to 45 degrees is formed between the two arc-shaped wire-passing holes. In this way, the brake wire, gearshift wire, electric wire, etc. of the bicycle can pass through the upper bowl in an orderly and smooth manner, thereby avoiding the problems of complicated and messy wiring, unsightly appearance, poor riding experience and safety of traditional bicycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is an exploded schematic diagram of the present invention assembled with the head pipe; Figure 3 It is a structural schematic diagram of the front side of the dust cover of the present invention; Figure 4 It is a schematic structural diagram of the back side of the dust cover of the present invention; Figure 5 This is a schematic structural diagram of the front side of the wire plug of the present invention; Figure 6 It is a structural schematic diagram of the back side of the wire plug of the present invention; Figure 7 This is a schematic diagram of the structure of the front side of the wiring washer of the present invention; Figure 8 It is a structural schematic diagram of the back side of the wiring washer of the present invention; Fig. 9 It is a structural schematic diagram of the front side of the open clamping ring of the present invention; Fig.10 It is a structural schematic diagram of the back side of the open clamping ring of the present invention; Fig.11 It is a schematic diagram of the half-section structure of the upper bearing of the present invention. DETAILED DESCRIPTION

[0017] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0018] Figures 1 to 11 It is a structural schematic diagram of the present invention.

[0019] The accompanying drawings are marked as follows: upper bowl A, center through hole A1, arc-shaped wire-passing hole A2, partition block A3, lower bowl B, center hole K, dust cover 1, first arc-shaped notch 11, first spacer block 12, first positioning protrusion 13, wire-passing plug 2, arc-shaped wire-passing plug piece 21, circular wire-passing hole 22, spacer block snap-on 23, wiring washer 3, assembly groove 31, first positioning pit 32, second arc-shaped notch 33, second spacer block 34, support platform edge 35, second positioning protrusion 36, ring sealing groove 37, opening clamping ring 4, pressure-bearing inclined surface 41, inner buckle 42, outer buckle 43, third arc-shaped notch 44, third spacer block 45, second positioning pit 46, upper bearing 5, thrust inclined surface 51, sealing ring 6, lower bearing 7, lower plug 8, and head pipe 9.

[0020] like Figure 1 and Figure 2 As shown, the present invention discloses a front bowl that can realize convenient passing of the line, and the front bowl includes an upper bowl A and a lower bowl B. The upper bowl A is used to be positioned and installed 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, so that the front fork of the bicycle (not shown in the figures) can pass through the upper bowl A, the head tube 9 and the lower bowl B in sequence, and can rotate freely relative to the head tube 9 under the rotation 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 invention is composed of a lower bearing 7 and a lower plug 8 assembled together from top to bottom. The lower plug 8 is a non-closed annular body with an opening, such as Figure 2 As shown, it is formed with a conical inclined surface, which can cooperate with the inclined surface formed on the inner ring of the lower bearing 7, so that the lower plug 8 will deform and shrink when subjected to radial thrust, so that the lower plug 8 can hold the front fork of the bicycle tightly. The lower bearing 7 is a stamped bearing independently developed by the present invention, which has high strength and high cost performance.

[0021] The greatest contribution of the present invention is that two arc-shaped wire-passing holes A2 for threading are formed on the outer periphery of the central through hole A1 of the upper bowl in the upper bowl, and the central axes of the two arc-shaped wire-passing holes A2 are 90 degrees apart circumferentially 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 brake cables, gear cables, electrical wires, etc. on traditional bicycles are all arranged on the head tube by binding or special components, which makes the wiring on the bicycle appear chaotic and complicated as a whole and not very beautiful. The present invention directly forms two arc-shaped wire-passing holes A2 for threading in the upper bowl A, so that the bicycle's lines can be arranged and passed through the arc-shaped wire-passing holes A2 in an orderly manner. Not only is the wiring beautiful and threading easy, but it can also ensure the safety of the bicycle's steering and improve the riding experience of the bicycle.

[0022] like Figure 2As shown, the upper bowl A of the present invention is composed of a dust cover 1, a wire plug 2, a wire washers 3, an open clamping ring 4 and an upper bearing 5 which are arranged in sequence. The dust cover 1, the wire plug 2, the wire washers 3 and the open clamping ring 4 are all formed with a central hole K for passing the front fork of the bicycle, and the central through hole A1 of the upper bowl A of the present invention is composed of these multiple central holes K.

[0023] In the embodiment Figure 3 As shown, the dust cover 1 of the present invention is elliptical, 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. Figure 4 As shown, the bottom surface of the dust cover 1 of the present invention 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. One of the two first positioning protrusions 13 is arranged on the bottom surface of the first spacer 12.

[0024] In the embodiment Figure 7 and Figure 8 As shown, the top surface of the wiring washer 3 of the present invention is formed with an elliptical assembly groove 31, and the outer peripheral contour of the assembly groove 31 is adapted to the shape of the dust cover 1, so that the dust cover 1 can be positioned and embedded in the assembly groove 31 of the wiring washer 3. Two first positioning pits 32 are also formed on the cavity bottom plane of the assembly groove 31. After the dust cover 1 is mounted on the assembly groove 31 of the wiring washer 3, the two first positioning protrusions 13 of the dust cover 1 can be positioned and inserted into the first positioning pits 32, thereby realizing the precise positioning and installation of the dust cover 1 and the wiring washer 3.

[0025] In the embodiment, two second arcuate notches 33 are formed in the assembly groove 31 of the wiring washer 3 at positions corresponding to the two first arcuate notches 11, and the openings of the two second arcuate notches 33 are both inward, so as to be connected with the central hole K of the wiring washer 3 to form a special-shaped hole cavity, and the periphery of the special-shaped hole cavity is pressed and formed with a concave support platform edge 35 for positioning and supporting. A second spacer 34 is formed between the two second arcuate notches 33 of the present invention, and the second spacer 34 is composed of a part of the bottom plane of the assembly groove cavity 31, and one of the two first positioning pits 32 is formed on the second spacer 34.

[0026] In the embodiment Figure 5As shown, the wire plug 2 of the present invention is in the shape of a ring, and its outer periphery is formed with two arc-shaped wire plug pieces 21 that are adapted to the shape of the corresponding second arc-shaped notches 33, and each arc-shaped wire plug piece 21 is formed with three circular wire holes 22. The circular wire holes 22 are covered with a thin layer of skin. When a circular wire hole 22 needs to be opened for wiring, the skin thereon is pierced. The circular wire holes 22 can enable various wires to have their own paths in the arc-shaped wire hole A2 to avoid mutual interference. A spacer block snap-in 23 is formed between the two arc-shaped wire plug pieces 21 of the wire plug 2. The second spacer block 34 of the wiring washer 3 can be inserted into the spacer block snap-in 23 after the wire plug 2 is assembled. The compression cover of the wire plug 2 of the present invention is installed between the dust cover 1 and the wiring washer 3. The outer contour of the wire plug 2 is adapted to the shape of the special-shaped hole cavity of the wiring washer 3. After installation, the wire plug 2 is just clamped and supported on the support platform edge 35 of the wiring washer 3.

[0027] In the embodiment, the upper bearing 5 of the present invention is mounted on the open clamping ring 4. Fig.11 As shown, a tapered thrust ramp 51 is formed on the upper portion of the inner ring of the upper bearing 5. Fig.10 As shown, the outer periphery of the open clamping ring 4 is formed with a pressure-bearing inclined surface 41, and the thrust inclined surface 51 and the pressure-bearing inclined surface 41 support each other. The thrust inclined surface 51 and the pressure-bearing inclined surface 41 cooperate to force the center hole K of the open clamping ring 4 to deform and shrink. 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 surface 41 through the thrust inclined surface 51. After the open clamping ring 4 is subjected to the radial thrust generated by the two inclined surfaces, it will shrink and deform, thereby holding the front fork of the bicycle tightly.

[0028] like Fig. 9 and Fig.10 As shown, the open clamping ring 4 of the present invention is made of carbon fiber material. It is the same as the open clamping ring on the traditional bicycle, and has an opening that can deform, expand or shrink itself. However, the special feature of the present invention 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 deform and expand for easy installation, the inner buckle 42 and the outer buckle 43 can limit the expansion range of the open clamping ring 4 by buckling with each other, thereby preventing the open clamping ring 4 from being damaged due to excessive expansion. When deforming and shrinking, the inner buckle 42 and the outer buckle 43 can be matched with the side opposite to it in the opening to limit the shrinking range of the open clamping ring 4, thereby preventing the open clamping ring 4 from being damaged due to excessive shrinking.

[0029] The open clamping ring 4 of the present invention is further formed with two third arc-shaped notches 44 opening outward at positions corresponding to the two second arc-shaped notches 33, and a third spacer 45 is formed between the two third arc-shaped notches 44. The arc-shaped wire-passing hole A2 of the present invention is composed of the first arc-shaped notch 11, the circular wire-passing hole 22 on the arc-shaped wire-passing plug 21, the second arc-shaped notch 33 and the third arc-shaped notch 44. The spacer A3 is composed of the first spacer 12, the second spacer 34 and the third spacer 45.

[0030] In the embodiment, two second positioning protrusions 36 are formed on the bottom surface of the wiring washer 3 of the present invention at a distance of 180 degrees in the circumferential direction, and correspondingly, two second positioning recesses 46 are formed on the top surface of the open clamping ring 4 for positioning with the second positioning protrusions 36. A circle of sealing grooves 37 are also formed on the bottom surface of the wiring washer 3, and a sealing ring 6 is positioned and mounted in the sealing groove 37. The sealing ring 6 is sealed 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.

[0031] The best embodiment of the present invention has been described, and various changes or modifications made by those skilled in the art will not depart from the scope of the present invention.

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 passing of the line 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 line passing 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).

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