Frame and bicycle

Abstract

The utility model belongs to the technical field of bicycles, and discloses a bicycle frame and a bicycle, a head bowl and a front fork vertical tube are rotatably connected through a bearing, wire harnesses such as a brake cable and a shift cable can enter a head tube main body through a wiring hole, and the wiring hole is formed in one radial side of a mounting hole used for mounting the bearing. According to the utility model, the installation of the bearing and the penetration of the wire harness do not influence each other, a conventional bearing can be selected, the bearing does not need to be dismounted when the wire harness is penetrated, the threading is simple, convenient and rapid, and the sheath of the wire harness is hardly scratched in the threading process; and when the front fork vertical pipe and the head bowl rotate relatively, wiring deviation is not caused, and the wire harness can be effectively prevented from being abraded due to the relative rotation of the front fork vertical pipe and the head bowl.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a frame and a bicycle. Background Art

[0002] The head tube of the bicycle frame is used to install and fix the front fork. In order to achieve full internal wiring, the existing technology proposes to pass the brake cable and the speed change cable from the upper port of the head tube into the head tube, so as to completely hide the brake cable and the speed change cable inside the head tube, avoid the disorderly and crowded wiring of the vehicle outside, make the wiring of the entire frame more regular, and make the appearance more beautiful. In addition, the design of internal wiring can effectively protect the brake cable and the speed change cable from being damaged by the external environment, such as dust, mud and gravel, etc. The design of internal wiring can also reduce the air resistance of the bicycle when it is running and increase the riding speed.

[0003] One end of the fork stem is rotatably inserted into the head tube through a bearing, and the fork stem can smoothly rotate relative to the head tube through the bearing. A wiring channel is provided between the inner hole of the bearing and the fork stem. In order to make the wiring channel meet the wiring requirements of the brake cable and the gearshift cable to ensure the smoothness of the wiring, the gap between the inner hole of the bearing and the fork stem is required to be 5mm-8mm. A special bearing is required to meet this size requirement. The cost of the bearing is high, and the wiring installation technology is high, which requires professional technicians to operate; and when the fork stem and the head tube rotate relative to each other, it is easy to cause the wiring harness to deviate and wear the wiring harness. Utility Model Content

[0004] The utility model aims to provide a frame and a bicycle, which can reduce the requirements for bearing processing and wiring harness installation and avoid wiring harness wear.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A vehicle frame, comprising:

[0007] A head pipe assembly, comprising a head pipe body and a head bowl, wherein one end of the head pipe body is fixedly mounted with a head bowl, the head bowl is provided with a mounting hole and a wiring hole, the wiring hole is located on one radial side of the mounting hole, one end of the wiring hole is communicated with the inner cavity of the head pipe body, the other end of the wiring hole forms a wiring inlet, and the wiring inlet is arranged obliquely upward;

[0008] A bearing, the bearing is installed in the mounting hole, and the outer ring of the bearing is fixed relative to the head bowl;

[0009] A front fork stem, one end of which is inserted into the inner hole of the bearing, and the front fork stem is fixed relative to the inner ring of the bearing.

[0010] As an implementation scheme of the above-mentioned frame, the outer peripheral surface of the head bowl includes a first conical surface and a second conical surface, two ends of the first conical surface and two ends of the second conical surface are smoothly connected to form an annular surface, and the wiring hole is opened on the second conical surface;

[0011] In the direction from the head pipe body to the head bowl, the diameters of the first conical surface and the second conical surface gradually decrease, the first conical surface and the radial cross-section of the head bowl intersect at a first arc, the second conical surface and the radial cross-section of the head bowl intersect at a second arc, for the same radial cross-section of the head bowl, the radius of the first arc is smaller than the diameter of the second arc, and the radial cross-section of the head bowl is perpendicular to the central axis of the head bowl.

[0012] As an implementation scheme of the above-mentioned frame, there are multiple wiring holes, and the multiple wiring holes include a brake cable hole for passing a brake cable, and a shift cable hole for passing a shift cable.

[0013] As an implementation scheme of the above-mentioned frame, the central axes of the plurality of wiring holes form a ring, and the ring and the mounting hole are coaxially arranged.

[0014] As an implementation scheme of the above frame, one end of the head pipe body is provided with a socket, the socket is a non-circular hole, and the head bowl includes:

[0015] Bowl body;

[0016] An annular matching portion is protruded from one axial end of the bowl body, the annular matching portion is axially plugged into and matched with the insertion hole, and the bowl body axially abuts against the axial end surface of the head pipe body.

[0017] As an implementation scheme of the above frame, the mounting hole is a stepped hole, the stepped hole includes a first hole and a second hole, and the aperture of the first hole is larger than the aperture of the second hole;

[0018] The bearing is installed in the first hole, and the front fork stem passes through the inner hole of the bearing and is rotatably arranged in the second hole.

[0019] As an implementation scheme for the above-mentioned frame, the head bowl also includes a guide fitting portion, the second hole is arranged through the guide fitting portion, the guide fitting portion is protruded on the radial inner side of the annular fitting portion, the mounting hole is arranged through the guide fitting portion, and a weight reducing groove is formed between the annular fitting portion, the guide fitting portion and the bowl body.

[0020] As an implementation scheme of the above-mentioned frame, one end of the wiring hole extends to the bottom wall of the weight-reducing groove.

[0021] As an implementation scheme of the above-mentioned frame, the bowl body, the annular mating portion and the guide mating portion are integrally formed steel structural parts.

[0022] In order to achieve the above-mentioned purpose, the utility model also provides a bicycle, comprising the frame described in any of the above-mentioned schemes, wherein the cable inlet is located at the front side of the head bowl.

[0023] Beneficial effects of the utility model:

[0024] The frame and bicycle provided by the utility model connect the head cup and the front fork vertical tube by rotation through the bearing, and the wiring harness such as the brake wire and the gear-changing wire can enter the head pipe body through the wiring hole, and the wiring hole is arranged on one side of the installation hole radially for installing the bearing, so that the installation of the bearing and the threading of the wiring harness do not affect each other, and a conventional bearing can be selected, and the bearing does not need to be removed when the wiring harness is threaded, and the threading is simple, convenient and fast, and the outer skin of the wiring harness is almost not scratched during the threading process; moreover, when the front fork vertical tube and the head cup rotate relative to each other, it will not cause the wiring deviation, and the wiring harness can be effectively prevented from being worn due to the relative rotation of the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a head pipe assembly provided by an embodiment of the utility model;

[0026] Figure 2 It is an assembly cross-sectional view of a head pipe assembly, a bearing and a front fork stem provided by an embodiment of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the head bowl provided by the embodiment of the utility model Figure 1 ;

[0028] Figure 4 It is a top view of the head bowl provided by the embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the head bowl provided by the embodiment of the utility model Figure 2 .

[0030] In the figure:

[0031] 1. Head pipe assembly; 11. Head pipe body; 12. Head bowl; 121. Mounting hole; 1211. First hole; 1212. Second hole; 122. Cable routing hole; 1221. Brake cable hole; 1222. Shift cable hole; 123. First conical surface; 124. Second conical surface; 125. Bowl body; 126. Annular mating part; 127. Guide mating part; 128. Weight reduction groove;

[0032] 2. Front fork vertical tube;

[0033] 3. Perrin. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] like Figures 1 to 5As shown, an embodiment of the utility model provides a frame, including a head tube assembly 1, a bearing 3 and a front fork stem 2, wherein the head tube assembly 1 includes a head tube body 11 and a head bowl 12, one end of the head tube body 11 is fixedly mounted with the head bowl 12, the head bowl 12 is provided with a mounting hole 121 and a wiring hole 122, the wiring hole 122 is located on one radial side of the mounting hole 121, one end of the wiring hole 122 is communicated with the inner cavity of the head tube body 11, and the other end of the wiring hole 122 forms a wiring port, which is arranged obliquely upward; the bearing 3 is installed in the mounting hole 121, and the outer ring of the bearing 3 is fixed relative to the head bowl 12; one end of the front fork stem 2 is penetrated into the inner hole of the bearing 3, and the front fork stem 2 is fixed relative to the inner ring of the bearing 3.

[0039] In the bicycle frame, the head bowl 12 and the front fork vertical tube 2 are rotatably connected through the bearing 3. The wiring harness such as the brake wire and the gear-shift wire can enter the head tube body 11 through the wiring hole 122. The wiring hole 122 is arranged on the radial side of the mounting hole 121 for mounting the bearing 3, so that the installation of the bearing 3 and the wiring of the wiring harness do not affect each other. Conventional bearings 3 can be selected. When the bearings 3 are wired, there is no need to remove the bearings 3. The wiring is simple, convenient and quick, and the outer skin of the wiring harness is almost never scratched during the wiring process. Moreover, when the front fork vertical tube 2 and the head bowl 12 rotate relative to each other, the wiring will not be offset, and the wiring harness can be effectively prevented from being worn due to the relative rotation of the two.

[0040] Specifically, Figures 3 to 5 As shown, the outer circumferential surface of the head bowl 12 includes a first conical surface 123 and a second conical surface 124, and the two ends of the first conical surface 123 and the two ends of the second conical surface 124 are smoothly connected to form an annular surface, and the wiring hole 122 is opened on the second conical surface 124; from the head tube body 11 to the head bowl 12, the diameters of the first conical surface 123 and the second conical surface 124 gradually decrease, the radial section of the first conical surface 123 and the head bowl 12 intersect at the first arc, and the radial section of the second conical surface 124 and the head bowl 12 intersect at the second arc. For the radial section of the same head bowl 12, the radius of the first arc is smaller than the diameter of the second arc, and the radial section of the head bowl 12 is perpendicular to the central axis of the head bowl 12.

[0041] In this embodiment, if Figure 4 As shown, there are multiple wiring holes 122, including a brake wire hole 1221 for passing the brake wire, and a shift wire hole 1222 for passing the shift wire. Exemplarily, there are four wiring holes 122, two of which are for the brake wire, and the other two are for the shift wire holes 1222. The central axes of the four wiring holes 122 form a ring, and the ring is coaxially arranged with the mounting hole 121.

[0042] In this embodiment, if Figure 5As shown, a socket is provided at one end of the head pipe body 11, and the socket is a non-circular hole. The head bowl 12 includes a bowl body 125 and an annular matching portion 126, wherein the annular matching portion 126 is convexly provided at one axial end of the bowl body 125, and the annular matching portion 126 is axially plugged and matched with the socket, and the bowl body 125 is axially abutted against the axial end face of the head pipe body 11. The socket is set as a non-circular hole, which can limit the rotation of the head pipe body 11 relative to the head bowl 12.

[0043] The embodiment of the utility model also provides a bicycle, comprising the above-mentioned frame, when the frame is used for a bicycle, the cable inlet is located in front of the head bowl 12. Since only the front fork stem 2 rotates and the head tube assembly 1 remains stationary, the cable inlet can always be located in front of the frame.

[0044] Exemplarily, the head pipe body 11 is an aluminum alloy pipe, the tolerance of the hole diameter and wall thickness of the head pipe body 11 is controlled to be less than 0.1mm, the straightness of the head pipe body 11 is less than 0.3mm, and the length of the head pipe body 11 is 500mm. The pipe can be formed by using the pipe drawing technology first, and then the pipe is cut by a high-power aluminum alloy laser cutting device to prepare the head pipe body 11. The end face of the pipe after laser cutting is flat, and the verticality of the end face of the head pipe can be controlled within 0.1mm. The processing accuracy of the head pipe body 11 is high, so that the head bowl 12 can be directly inserted into the head pipe body 11; and the processing technology of the head pipe body 11 is simple.

[0045] In this embodiment, if Figure 2 , Figure 3 and Figure 5 As shown, the mounting hole 121 is a stepped hole, which includes a first hole 1211 and a second hole 1212. The aperture of the first hole 1211 is larger than the aperture of the second hole 1212. The bearing 3 is installed in the first hole 1211, and the front fork stem 2 is rotatably arranged in the second hole 1212 after passing through the inner hole of the bearing 3. By providing the second hole 1212, the front fork stem 2 and the head tube assembly 1 can be rotatably matched on the basis of ensuring that the inner rings of the front fork stem 2 and the bearing 3 are fixed, and the head tube assembly 1 is used to provide support for the front fork stem 2 to prevent the front fork stem 2 from deflecting.

[0046] In this embodiment, if Figure 2 , Figure 3 and Figure 5As shown, the head bowl 12 further includes a guide matching portion 127, a second hole 1212 is provided through the guide matching portion 127, the guide matching portion 127 is convexly provided on the radial inner side of the annular matching portion 126, the mounting hole 121 is provided through the guide matching portion 127, and a weight reduction groove 128 is formed between the annular matching portion 126, the guide matching portion 127 and the bowl body 125. The weight of the head bowl 12 can be reduced on the basis of satisfying the installation of the head tube body 11 and the head bowl 12, and the rotational matching of the head tube body 11 and the front fork stem 2.

[0047] For example, Figure 2 As shown, one end of the wiring hole 122 extends to the bottom wall of the weight-reducing groove 128. The wire harness and the front fork stem 2 are separated by the guide matching portion 127, so that the wire harness and the rotating front fork stem 2 can be prevented from contacting.

[0048] In this embodiment, the bowl body 125, the annular matching portion 126 and the guide matching portion 127 are integrally formed steel structural parts, which are easy to process and low in cost.

[0049] It should be noted that the frame also includes a handlebar and a cover connected to the handlebar, the cover is arranged outside the wiring hole 122, the inner cavity of the cover, the inner cavity of the handlebar and the wiring hole 122 are connected to form a wiring channel, a part of the wiring harness is passed through the wiring channel, and the other part of the wiring harness is passed through the head pipe assembly 1, so that the entire wiring harness is built-in and will not be exposed.

[0050] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A frame, characterized in that: include: A head pipe assembly (1) comprises a head pipe body (11) and a head bowl (12), wherein the head bowl (12) is fixedly mounted on one end of the head pipe body (11), and the head bowl (12) is provided with a mounting hole (121) and a wiring hole (122), wherein the wiring hole (122) is located on one radial side of the mounting hole (121), and one end of the wiring hole (122) is communicated with an inner cavity of the head pipe body (11), and the other end of the wiring hole (122) forms a wiring port, and the wiring port is arranged obliquely upward; A bearing (3), the bearing (3) is installed in the installation hole (121), and the outer ring of the bearing (3) is fixed relative to the head bowl (12); A front fork vertical tube (2), one end of which is inserted into the inner hole of the bearing (3), and the front fork vertical tube (2) is fixed relative to the inner ring of the bearing (3).

2. The frame according to claim 1, characterized in that: The outer peripheral surface of the head bowl (12) comprises a first conical surface (123) and a second conical surface (124), two ends of the first conical surface (123) and two ends of the second conical surface (124) are smoothly connected to form an annular surface, and the wiring hole (122) is opened on the second conical surface (124); From the head tube body (11) to the head bowl (12), the diameters of the first conical surface (123) and the second conical surface (124) gradually decrease, the radial sections of the first conical surface (123) and the head bowl (12) intersect at a first arc, the radial sections of the second conical surface (124) and the head bowl (12) intersect at a second arc, for the same radial section of the head bowl (12), the radius of the first arc is smaller than the diameter of the second arc, and the radial section of the head bowl (12) is perpendicular to the central axis of the head bowl (12).

3. The frame according to claim 1, characterized in that: A plurality of the wiring holes (122) are provided, and the plurality of wiring holes (122) include a brake wire hole (1221) for passing a brake wire, and a shift wire hole (1222) for passing a shift wire.

4. The frame according to claim 3, characterized in that: The central axes of the plurality of wiring holes (122) form a circular ring, and the circular ring and the mounting hole (121) are coaxially arranged.

5. The frame according to claim 1, characterized in that: One end of the head pipe body (11) is provided with an insertion hole, the insertion hole is a non-circular hole, and the head bowl (12) comprises: Bowl body (125); An annular matching portion (126) is protruding from one axial end of the bowl body (125), the annular matching portion (126) is axially plugged into the insertion hole, and the bowl body (125) is axially abutted against the axial end surface of the head pipe body (11).

6. The frame according to claim 5, characterized in that: The mounting hole (121) is a stepped hole, the stepped hole comprising a first hole (1211) and a second hole (1212), the diameter of the first hole (1211) being larger than the diameter of the second hole (1212); The bearing (3) is installed in the first hole (1211), and the front fork vertical tube (2) passes through the inner hole of the bearing (3) and is rotatably installed in the second hole (1212).

7. The frame according to claim 6, characterized in that: The head bowl (12) also includes a guide mating portion (127), the second hole (1212) is arranged through the guide mating portion (127), the guide mating portion (127) is protruded on the radial inner side of the annular mating portion (126), the mounting hole (121) is arranged through the guide mating portion (127), and a weight reduction groove (128) is formed between the annular mating portion (126), the guide mating portion (127) and the bowl body (125).

8. The frame according to claim 7, characterized in that: One end of the wiring hole (122) extends to the bottom wall of the weight-reducing groove (128).

9. The frame according to claim 7, characterized in that: The bowl body (125), the annular matching portion (126) and the guide matching portion (127) are integrally formed steel structural parts.

10. A bicycle, characterized in that: The frame comprising any one of claims 1 to 9, wherein the cable inlet is located at the front side of the head bowl (12).

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