Aluminum alloy integrally-formed bicycle handlebar

Abstract

The utility model discloses a bicycle handlebar integrally formed by aluminum alloy, which mainly comprises a central part, at least more than two bent connecting parts, two handle parts and a front fork connecting part, and the two bent connecting parts are respectively and integrally connected to two ends of the central part. The two bent connecting parts are bent and extend forwards relative to the central part towards a bicycle rider from the riding view angle, the distance between the central point of the central part and the connecting point of each bent connecting part and the central part is not larger than 20 cm, and the two handle parts are integrally connected to the two bent connecting parts respectively. The front fork connecting part is integrally arranged in the center of the center part in a protruding mode and can be used for being fixedly connected with a bicycle front fork pipe.

Description

Technical Field

[0001] This utility model relates to a bicycle handlebar stem, specifically to a bicycle handlebar stem made of one-piece aluminum alloy. Background Technology

[0002] A bicycle is a mode of transportation that combines sports and leisure functions. Generally, a handlebar is set at the front of the bicycle and connected to the front fork tube of the front wheel. The rider controls the stability of the bicycle by holding the handlebar and controls the direction of the bicycle by turning the handlebar.

[0003] The existing bicycle handlebars are connected to the fork tube via a handlebar stem, as shown in Taiwan Utility Model Patent No. M559274 (hereinafter referred to as the reference). However, this method of connecting the handlebar stem to the fork tube is not only structurally complex and has many components, but it is also quite inconvenient to manufacture and assemble. This may increase the overall manufacturing cost of the bicycle, and there is a real need for further improvement. Utility Model Content

[0004] Therefore, in view of the inconvenience and deficiencies in the existing connection structure between the handlebars and the fork tube of a bicycle, the inventor of this utility model has created a utility model that can improve upon the existing deficiencies through continuous experimentation and research.

[0005] The main purpose of this utility model is to provide a one-piece molded aluminum alloy bicycle handlebar stem, which can simplify the overall structure of the bicycle and reduce the overall manufacturing cost of the bicycle.

[0006] To achieve the above objectives, this utility model provides a one-piece molded aluminum alloy bicycle handlebar stem, which includes:

[0007] One central department;

[0008] At least two or more bent connecting parts are integrally connected to both ends of the central part. The two bent connecting parts bend forward relative to the central part towards the cyclist from the riding perspective. The distance from the center point of the central part to the connection point between each bent connecting part and the central part does not exceed 20 centimeters.

[0009] Two handle sections, each integrally connected to one of the two bent connecting sections; and

[0010] A fork connector is integrally protruding from the center of the central part and can be used to fix it to the bicycle fork tube.

[0011] The aluminum alloy one-piece molded bicycle handlebar stem has a fork connection part having a body, a through hole penetrating the body, and a clamping seam recessed on the body and communicating with the through hole.

[0012] The aluminum alloy one-piece molded bicycle handlebar stem has an angle between the center line of each bent connecting part and the center line of the central part.

[0013] The aluminum alloy one-piece molded bicycle handlebar stem has an included angle that can be between 0° and 90°.

[0014] The aluminum alloy one-piece molded bicycle handlebar stem has the ends of the two handlebars extending slightly forward toward the cyclist from a riding perspective.

[0015] The aluminum alloy one-piece molded bicycle handlebar stem has each bent connecting part extending upward at an angle relative to the central part.

[0016] The aluminum alloy one-piece molded bicycle handlebar stem has two handle parts bent into a curved shape, so that the two handle parts are curved in an arc shape near the middle.

[0017] The aluminum alloy one-piece molded bicycle handlebars have a downward-curved arc-shaped middle section between the two handles.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] Through the above-mentioned technical means, this utility model allows the handlebars and fork tubes to be directly fixedly connected through an integrally formed fork connector, eliminating the need for the handlebar vertical tube. Therefore, the manufacturing and assembly process of the handlebar vertical tube can be omitted, which not only simplifies the overall structure of the bicycle, but also reduces the number of components and processes to be manufactured and assembled, thereby reducing the overall manufacturing cost of the bicycle. Attached Figure Description

[0020] Figure 1 This is a perspective view of the first embodiment of the present utility model.

[0021] Figure 2 This is a top view of the first embodiment of the present invention.

[0022] Figure 3 This is a three-dimensional view of the blank of this utility model.

[0023] Figure 4 This is a side view of the rough blank processing of this utility model.

[0024] Figure 5 This is a perspective view of the second embodiment of the present utility model.

[0025] Figure 6 This is a top view of the second embodiment of the present invention.

[0026] Figure 7 This is a perspective view of the third embodiment of the present utility model.

[0027] Figure 8 This is a top view of the third embodiment of the present invention.

[0028] Figure 9 This is a perspective view of the fourth embodiment of the present utility model.

[0029] Figure 10 This is a top view of the fourth embodiment of the present invention.

[0030] Figure 11 This is a perspective view of the fifth embodiment of the present utility model.

[0031] Figure 12 This is a top view of the fifth embodiment of the present invention.

[0032] Figure 13 This is a perspective view of the sixth embodiment of the present utility model.

[0033] Figure 14 This is a top view of the sixth embodiment of the present invention.

[0034] Symbol explanation:

[0035] 10, 10A, 10B, 10C, 10D, 10E: Central Department

[0036] 12, 12A, 12B, 12C, 12D, 12E: Handle

[0037] 14, 14A, 14B, 14C, 14D, 14E: Bending connection part

[0038] 142: Connection Point

[0039] 20: Front fork connection section

[0040] 22: piercing

[0041] 24: Seam

[0042] θ: included angle Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] The present invention will now be described in further detail with reference to the accompanying drawings:

[0045] This utility model provides a one-piece molded aluminum alloy bicycle handlebar stem. Please refer to the following: Figure 1 and Figure 2 As shown in the figure, the one-piece aluminum alloy bicycle handlebar stem of this utility model mainly includes a central part 10, at least two bent connecting parts 14, two handlebar parts 12, and a fork connecting part 20. The two bent connecting parts 14 are integrally connected to both ends of the central part 10. The two bent connecting parts 14 bend forward relative to the central part 10 towards the cyclist from a riding perspective. Preferably, the distance from the center point of the central part 10 to the connection point 142 between each bent connecting part 14 and the central part is no more than 20 cm. The two handlebar parts 12... The two bent connecting parts 14 are integrally connected to each other, and the fork connecting part 20 is integrally protruding from the center of the central part 10 and can be used to fix it to the bicycle fork tube. The fork connecting part 20 mainly has a body, on which a through hole 22 is provided and a clamping slot 24 is recessed on the body and communicates with the through hole 22. Thus, the top end of the bicycle fork tube can be passed through the through hole 22 on the fork connecting part 20, and the clamping slot 24 is passed through by screws or quick-release structures to clamp and fix the fork tube, so that the handlebars can be fixedly connected to the fork tube.

[0046] The aluminum alloy one-piece molded bicycle handlebar stem of this utility model allows the handlebars and fork tubes to be directly fixedly connected through the fork connection part 20, without the need for the handlebar stem. Therefore, the manufacturing and assembly process of the handlebar stem can be omitted, which not only simplifies the overall structure of the bicycle, but also reduces the number of components and processes to be manufactured and assembled, thereby reducing the overall manufacturing cost of the bicycle.

[0047] Please refer to the following: Figure 3 and Figure 4 In manufacturing this utility model, a metal blank can first be placed into a mold and forged into a shape such as... Figure 3The blank shown generally forms a central part 10 and a fork connection part 20. The blank is then placed in another mold, and two stamping dies are used to stamp the two ends of the central part 10, forming concave holes at both ends of the central part 10. The central part 10 is gradually elongated, and finally the central part 10 becomes hollow. Handle parts 12 are formed at both ends of the central part 10. In addition, through drilling and cutting, perforations 22 and clamping seams 24 are formed on the fork connection part 20. After appropriate shrinking and bending, a bent connection part 14 of appropriate shape is formed between the central part 10 and the handle part 12, thus completing the manufacturing of the handlebar of this utility model.

[0048] Furthermore, the handlebar of this utility model can also be made by metal processing procedures such as forging, die casting, welding and cutting. The overall manufacturing is quite simple, the required technology is mature and convenient, and the complexity of processing and forming of this utility model can be greatly reduced.

[0049] Please also refer to the following: Figure 1 and Figure 2 In the first embodiment of this utility model, each bent connecting part 14 can also be inclined upward relative to the central part, and an angle θ is formed between the center line of each bent connecting part facing forward from the riding perspective of the cyclist and the center line of the central part. The angle θ can be between 0° and 90°, so as to match different riders to achieve the best riding angle for the rider, and the ends of the two handlebars 12 extend slightly forward to form a handlebar shape that matches the appropriate grip of the rider.

[0050] Please also refer to the following: Figure 5 and Figure 6 In the second embodiment of this utility model, the ends of the two handlebar portions 12A extend slightly forward toward the cyclist from the riding perspective, and the center line of each bent connecting portion 14A extending slightly forward toward the cyclist from the riding perspective forms an angle θ with the center line of the central portion 10A, wherein the angle θ can be between 0° and 90°, thus forming another handlebar shape to suit different riders.

[0051] Please also refer to the following: Figure 7 and Figure 8 In the third embodiment of this utility model, a bent connecting portion 14B with a different angle is formed between the central portion 10B and the two handle portions 12B, and the ends of the two handle portions 12B extend slightly to the rear, thus forming another handlebar shape to suit different riders.

[0052] Please refer to the following: Figure 9 and Figure 10In the fourth embodiment of this utility model, a bent connecting part 14C with a different angle is formed between the central part 10C and the two handle parts 12C, and the ends of the two handle parts 12C extend slightly to the rear, thus forming another handlebar shape that can be used by different riders.

[0053] Please refer to the following: Figure 11 and Figure 12 In the fifth embodiment of this utility model, a bent connecting portion 14D is formed between the central portion 10D and the two handle portions 12D, which are simultaneously horizontally inclined forward and upward, and the ends of the two handle portions 12D extend slightly backward to form another handlebar shape that can be used by different riders.

[0054] Please also refer to the following: Figure 13 and Figure 14 In the sixth embodiment of this utility model, a horizontally inclined forward-bent connecting part 14E is formed between the central part 10E and the two handle parts 12E, and the two handle parts 12E are bent into a curved shape, so that the two handle parts 12E near the middle form a downward or upward arc bend, thereby forming a handlebar shape that can be used by different riders.

[0055] The handlebars of this utility model are not limited in structure and shape of the two handlebar parts 12. Therefore, as long as a front fork connection part 20 is integrally formed in the central part 10, it falls within the scope of this utility model. This utility model does not impose any restrictions.

[0056] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A one-piece molded aluminum alloy bicycle handlebar stem, characterized in that, It includes: One central department; At least two or more bent connecting parts are integrally connected to both ends of the central part. The two bent connecting parts are bent forward relative to the central part and extend towards the cyclist from the riding perspective. The distance between the center point of the central part and the connection point between each bent connecting part and the central part does not exceed 20 centimeters. Two handle sections, each integrally connected to one of the two bent connecting sections; and A fork connector is integrally protruding from the center of the central part and can be used to fix it to the bicycle fork tube.

2. The one-piece molded aluminum alloy bicycle handlebar as described in claim 1, characterized in that, The fork connector has a body, on which a through hole is provided and a clamping slot is recessed on the body and connected to the through hole.

3. The one-piece molded aluminum alloy bicycle handlebar stem as described in claim 1 or 2, characterized in that, An angle is formed between the centerline of each bend and the centerline of the central part.

4. The one-piece molded aluminum alloy bicycle handlebar stem as described in claim 3, characterized in that, The angles of each included angle are between 0° and 90°.

5. The one-piece molded aluminum alloy bicycle handlebar as described in claim 4, characterized in that, The ends of both handlebars extend forward toward the cyclist from a riding perspective.

6. The one-piece molded aluminum alloy bicycle handlebar as described in claim 5, characterized in that, Each bend and connection point extends upward at an angle relative to the central part.

7. The one-piece molded aluminum alloy bicycle handlebar stem as described in claim 1 or 2, characterized in that, The ends of both handles extend forward.

8. The one-piece molded aluminum alloy bicycle handlebar stem as described in claim 1 or 2, characterized in that, Each bend and connection point extends upward at an angle relative to the central part.

9. The one-piece molded aluminum alloy bicycle handlebar stem as described in claim 1 or 2, characterized in that, The two handles are bent into a curved shape, so that the middle part of the two handles is curved.

10. The one-piece molded aluminum alloy bicycle handlebar as described in claim 9, characterized in that, The middle part of both handles curves downwards in an arc.

11. The one-piece molded aluminum alloy bicycle handlebar stem as described in claim 10, characterized in that, An angle is formed between the centerline of each bend and the centerline of the central part.

12. The one-piece aluminum alloy bicycle handlebar stem as described in claim 11, characterized in that, The angles of each included angle are between 0° and 90°.

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