Bicycle frame and bicycle
By designing an expansion section in the head tube of the bicycle frame to create a groove to accommodate the cable routing, the problem of internal cable routing being scratched and worn is solved, achieving cable protection and cost reduction.
Patent Information
- Application Number
- CN202520666572.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-04-10
AI Technical Summary
The internal wiring of bicycles is easily scratched and worn, and is difficult to repair.
Design a bicycle frame with an expansion section on the head tube. The inner wall of the expansion section forms a groove to accommodate cable routing and connects to the top tube through a cable hole, thus preventing the cable from contacting other structures.
It effectively prevents the wiring from being scratched and worn, increases the service life of the wiring, and reduces the overall manufacturing cost of the bicycle.
Smart Images
Figure CN223850755U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a bicycle technical field especially relates to a bicycle frame and bicycle. BACKGROUND
[0002] More and more highway vehicles adopt full internal wiring, and brake line and gear shift line are passed into the pipe from the upper port of the head pipe, and the brake line and gear shift line are completely hidden in the pipe of the frame, in addition, some individual and fashionable head pipes of bicycle also increase hidden internal lamp line, and the internal wiring of bicycle can reduce the clutter and congestion of vehicle exterior, and can make the whole frame circuit more neat and the appearance more beautiful. Internal wiring design can effectively protect brake line and gear shift line from external environment, such as dust, mud and gravel, etc. Internal wiring design can reduce air resistance and improve riding speed.
[0003] However, the internal installation wiring enters the head pipe through the gap between the inner hole of the belling and the front fork vertical rod, and the outer wall of the wiring pipe is easy to be scratched by the hole wall of the wire inlet hole on the head cover and easy to be abraded by the front fork vertical rod, and the wiring repair is also difficult.
[0004] Therefore, there is an urgent need for a bicycle frame to solve the above technical problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a bicycle frame and bicycle, which can prevent internal wiring from being scratched and abraded.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] In the first aspect, a bicycle frame is provided, which comprises a head pipe and an upper pipe, the head pipe and the upper pipe are both hollow pipes, one end of the upper pipe is connected with the outer side wall of the head pipe, and the upper pipe and the head pipe are communicated, the head pipe has an expansion part, the inner wall of the expansion part is outwardly protruding to form a groove, the groove extends to the upper pipe and is communicated with the through hole of the upper pipe, the expansion part is provided with a wire hole, the wire hole is communicated with the groove, and the groove is used for accommodating wiring.
[0008] As a preferred technical solution of the above bicycle frame, the groove is arranged along the inner periphery of the head pipe.
[0009] As a preferred technical solution of the above bicycle frame, the wire hole is arranged away from the upper pipe along the head pipe.
[0010] As a preferred technical solution of the above bicycle frame, an adhesive layer is arranged in the groove, and the adhesive layer is used for fixing the wiring.
[0011] As a preferred technical scheme of the bicycle frame, the cross section of the groove is a C-shaped groove, and the side wall of the groove can clamp the wire.
[0012] As a preferred technical scheme of the bicycle frame, the head tube is an integral structure.
[0013] As a preferred technical scheme of the bicycle frame, the outer wall of the expansion part of the head tube has a first edge line, the upper tube has a second edge line, and the end of the first edge line is smoothly connected with the second edge line.
[0014] As a preferred technical scheme of the bicycle frame, the head tube is welded with the upper tube.
[0015] As a preferred technical scheme of the bicycle frame, the bicycle frame further comprises a threading ring, the threading ring partially extends into the threading hole, the threading ring has a limiting groove and a via hole through which the wire passes, the via hole is communicated with the limiting groove, and the limiting groove is communicated with the groove.
[0016] In the second aspect, the bicycle comprises the bicycle frame according to any one of the above-mentioned schemes.
[0017] The utility model has at least the following beneficial effects:
[0018] The bicycle frame comprises a head tube and an upper tube, the head tube and the upper tube are both hollow tubes, one end of the upper tube is connected with the outer side wall of the head tube, the upper tube is communicated with the head tube, the head tube has an expansion part, the inner wall of the expansion part is outwardly protrudingly arranged on the head tube to form a groove, the groove extends to the upper tube and is communicated with the through hole of the upper tube, the expansion part is provided with a threading hole, the threading hole is communicated with the groove, and the groove is used for accommodating the wire to avoid the wire from being abraded. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the utility model and the drawings without paying creative labor.
[0020] Figure 1 A structure schematic view of a bicycle frame is provided for the embodiment of the present utility model;
[0021] Figure 2 A structure schematic view of a connection between a head tube and an upper tube is provided for the embodiment of the present utility model;
[0022] Figure 3 A structure top view of a connection between a head tube and an upper tube is provided for the embodiment of the present utility model;
[0023] Figure 4 A sectional view of a connection between a head tube and an upper tube is provided for the embodiment of the present utility model.
[0024] In the drawing:
[0025] 1, head tube; 11, expansion part; 111, threading hole; 112, groove; 12, first ridge line; 2, upper tube; 21, second ridge line; 3, wire; 4, lower tube; 5, middle tube; 6, rear fork upper tube; 7, five-way tube. DETAILED DESCRIPTION
[0026] The present utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, but not to limit the present utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present utility model are shown in the drawings, not all the structures.
[0027] In the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to the specific circumstances.
[0028] In the present utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or it can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and oblique above of the first feature to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical and oblique below of the first feature to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0029] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.
[0030] In order to prevent the internal wiring of the bicycle frame from being scratched or worn, as shown in the prior art, Figures 1 to 4 The present embodiment provides a bicycle frame which can prevent the wiring from being scratched or worn by the internal structure, protect the wiring and improve the service life of the wiring.
[0031] As shown in the prior art, Figures 1 to 4 The bicycle frame includes a head tube 1 and an upper tube 2, both of which are hollow tubes. One end of the upper tube 2 is connected to the outer sidewall of the head tube 1, and the upper tube 2 is in communication with the head tube 1. The head tube 1 has an expansion portion 11, the inner wall of which is outwardly protruding to form a groove 112, which extends to the upper tube 2 and is in communication with the through hole of the upper tube 2. The expansion portion 11 is provided with a threading hole 111, which is in communication with the groove 112. The groove 112 is used to accommodate the wiring 3 to prevent it from being worn.
[0032] Because the head tube 1 has the expansion portion 11, the inner wall of which is outwardly protruding to form the groove 112, the internal wiring 3 can be accommodated by the groove 112, so that the wiring 3 can avoid contact with other structures. In addition, the head tube 1 is also provided with the threading hole 111, which is arranged in the expansion portion 11 and can be in communication with the groove 112. In this way, after the wiring 3 passes through the threading hole 111, it directly enters the groove 112, so that the wiring 3 does not come into contact with the structure inside the head tube 1, thereby avoiding being worn and being scratched by the hole wall of the wire inlet hole of the head cover, and improving the service life of the wiring 3.
[0033] Specifically, the groove 112 is arranged along the inner periphery of the head tube 1. This arrangement facilitates the machining of the head tube 1, and in addition, the arrangement of the groove 112 along the inner periphery of the head tube 1 can also reduce the length of the wiring 3 and reduce the overall manufacturing cost of the bicycle.
[0034] In some embodiments, the threading hole 111 is arranged away from the upper tube 2 along the head tube 1. The threading hole 111 is arranged away from the upper tube 2, which can quickly pass the wiring 3 into the head tube 1, so as to avoid twisting of the wiring 3 when it passes from the side.
[0035] In order to make the wire 3 more firmly in the groove 112, the groove 112 is provided with an adhesive layer for fixing the wire 3. The adhesive layer can be double-sided tape, of course, as long as the wire 3 can be adhered in the groove 112.
[0036] In some embodiments, the cross section of the groove 112 is a C-shaped groove, and the side wall of the groove 112 can tightly hold the wire 3. The side wall of the C-shaped groove can tightly hold the wire 3, avoiding the wire 3 from escaping from the slot of the groove 112, and ensuring that the wire 3 is not worn out in the stem tube 1.
[0037] In some embodiments, the stem tube 1 is an integral structure. The expansion part 11 of the stem tube 1 is formed by an internal expansion type expanding cross-sectional circumference additive molding method. Specifically, after the super glue is filled into the stem tube 1, the super glue is extruded from both ends of the stem tube 1, and after the both ends of the super glue are extruded, the super glue expands radially in the stem tube 1, and then the stem tube 1 is extruded radially to form the expansion part 11. It should be noted that the super glue pipe expanding method is a prior art, so it will not be described in detail. The cross-sectional circumference of the expansion part 11 in the middle of the stem tube 1 is large, and the cross-sectional circumference of the both ends of the stem tube 1 is small. The cross section of the port of the stem tube 1 can be consistent with the cross section of the fork shoulder, and the port of the stem tube 1 is smoothly connected with the expansion part 11, so as to improve the integral effect of the bicycle.
[0038] During the manufacturing process of the stem tube 1, the both ends of the stem tube 1 are internally and externally turned according to the design shape, and the inside is installed with a bearing after being bored. The cross section of the port of the stem tube 1 is not limited, which is convenient for molding; by the above manufacturing method, the material cost of product materials can be reduced, and a pipe material with smaller diameter and thinner wall thickness is used.
[0039] By using the internal expansion type expanding cross-sectional circumference additive molding method of the stem tube 1, the stem tube 1 boring allowance needs to be reserved in the design, which greatly reduces the CNC internal and external turning time of the stem tube 1, and also meets the design requirement of different wall thickness. After internal expansion, expanding and expanding molding, the quality requirement is met (the same specification can save 20% of the material, and the turning time is saved more). In addition, by using the internal expansion type molding method of the stem tube 1, the traditional two-end necking and multiple CNC internal and external turning process is not needed, and the design requirement of various types of special-shaped stem tubes 1 can be met. Through a low-cost way, the problem of being unable to manufacture the special-shaped stem tube 1 is solved.
[0040] In some embodiments, in order to make the bicycle frame more beautiful as a whole, the expansion part 11 of the stem tube 1 has a first edge line 12, the upper tube 2 has a second edge line 21, and the end of the first edge line 12 is smoothly connected with the end of the second edge line 21. In addition, the first edge line 12 and the second edge line 21 are substantially in the same plane, so as to ensure that they are connected to become an integral edge line, and the appearance is more beautiful.
[0041] In order to ensure the connection firmness between the front pipe 1 and the upper pipe 2, the front pipe 1 and the upper pipe 2 are welded.
[0042] After the threading hole 111 is processed, the edge thereof can be relatively sharp and can hang the wire 3, therefore, the bicycle frame further comprises a threading ring, the threading ring is partially arranged in the threading hole 111, the threading ring is a plastic part, the edge thereof is chamfered to avoid the friction damage of the wire 3, the threading ring has a limiting groove and a through hole through which the wire 3 passes, the through hole is communicated with the limiting groove, the limiting groove is arranged on an end surface of the threading ring which enters the threading hole 111, and the limiting groove is communicated with the groove 112 to ensure that the wire 3 can smoothly enter the groove 112 and cannot protrude from the groove 112 at the limiting ring.
[0043] Continuing to refer to Figure 1 The bicycle frame further comprises a lower pipe 4, a middle pipe 5, a five-way pipe 7 and a rear fork upper pipe 6, wherein the lower pipe 4 is below the upper pipe 2, the upper pipe 2 and the lower pipe 4 are fixedly connected with the front pipe 1, specifically welded. The lower pipe 4, the upper pipe 2, the middle pipe 5, the rear fork upper pipe 6 are connected with the outer peripheral wall of the five-way pipe 7, and the middle pipe 5 is used for connecting the upper pipe 2 and the rear fork upper pipe 6, specifically welded.
[0044] The embodiment further provides a bicycle comprising the bicycle frame provided in the embodiment.
[0045] The bicycle comprises the bicycle frame, and the bicycle frame comprises the front pipe 1 and the upper pipe 2, since the front pipe 1 has the expansion part 11, the inner wall of the expansion part 11 is arranged outwardly protruding from the front pipe 1 to form the groove 112, so that the internal wire 3 can be accommodated by the groove 112, thereby avoiding the wire 3 from contacting other structures, in addition, the front pipe 1 is further provided with the threading hole 111, and the threading hole 111 is arranged in the expansion part 11 and can be communicated with the groove 112, so that the wire 3 directly enters the groove 112 after passing through the threading hole 111, so that the wire 3 does not contact the structure in the front pipe 1 and is avoided from being abraded, and the wire 3 can also be avoided from being scratched by the hole wall of the wire inlet hole of the bicycle cover, thereby improving the service life of the wire 3.
[0046] Since the bicycle frame is provided, the bicycle provided in the embodiment has all the advantages and beneficial effects of the above-mentioned embodiment, which will not be repeated here.
[0047] In addition, the above is only the preferred embodiment of the present application and the applied technical principle. The person skilled in the art can understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by the person skilled in the art without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims
1. A bicycle frame, characterized in that, The bicycle frame comprises a front pipe (1) and an upper pipe (2), the upper pipe (2) and the front pipe (1) are both hollow pipes, one end of the upper pipe (2) is connected with the outer wall of the front pipe (1), and the upper pipe (2) and the front pipe (1) are communicated, the front pipe (1) has an expansion part (11), the inner wall of the expansion part (11) is arranged outwardly to form a groove (112), the groove (112) extends to the upper pipe (2) and is communicated with the through hole of the upper pipe (2), the expansion part (11) is provided with a threading hole (111), the threading hole (111) is communicated with the groove (112), and the groove (112) is used for accommodating a wire (3).
2. Bicycle frame according to claim 1, characterized in that The groove (112) is arranged along the inner periphery of the front pipe (1).
3. Bicycle frame according to claim 1, characterized in that The threading hole (111) is arranged away from the upper pipe (2) along the front pipe (1).
4. The bicycle frame of claim 1, wherein, An adhesive layer is arranged in the groove (112) and used for fixing the wire (3).
5. The bicycle frame of claim 1, wherein, The cross section of the groove (112) is a C-shaped groove, and the side wall of the groove (112) can clamp the wire (3).
6. The bicycle frame of claim 1, wherein, The front pipe (1) is an integral structure.
7. The bicycle frame of claim 1, wherein, The outer wall of the expansion part (11) of the front pipe (1) has a first ridge line (12), the upper pipe (2) has a second ridge line (21), and the end of the first ridge line (12) is smoothly connected with the second ridge line (21).
8. The bicycle frame of claim 1, wherein, The front pipe (1) and the upper pipe (2) are welded.
9. The bicycle frame of claim 1, wherein, The bicycle frame further comprises a threading ring, the threading ring partially extends into the threading hole (111), the threading ring has a limiting groove and a via hole through which the wire (3) passes, the via hole is communicated with the limiting groove, and the limiting groove is communicated with the groove (112).
10. A bicycle characterized in that, The bicycle frame comprises the bicycle frame according to any one of claims 1-9.