Titanium alloy directly-installed tail hook for bicycle

Abstract

The utility model discloses a titanium alloy direct installation tail hook for a bicycle, and relates to the technical field of bicycle direct installation tail hooks. A shaft body positioning hole is formed in the first main body, a tail hook fixing groove is formed in the right end of the first main body, the supporting assembly comprises a front set of supporting side edges and a rear set of supporting side edges, upper reinforcing ribs are installed at the tops of the supporting side edges, lower reinforcing ribs are arranged at the bottoms of the supporting side edges, and light-weight special-shaped groove holes are formed in the upper reinforcing ribs and the lower reinforcing ribs; a rear shifting transmission connecting ring is arranged in the second body and fixedly connected with the left end of the supporting side edge. The slotted holes are formed in the upper reinforcing ribs and the lower reinforcing ribs through the light-weight special-shaped slotted holes, so that the upper reinforcing ribs and the lower reinforcing ribs can form a plurality of groups of triangular fixing piece structures to support the inclined side edges of the supporting assembly, and the situation that the whole supporting assembly deforms easily due to frequent speed change is avoided; the strength and the rigidity of the directly-installed tail hook can be improved while the weight of the directly-installed tail hook is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle direct loading tail hook technical field, concretely is titanium alloy direct loading tail hook for bicycle. BACKGROUND

[0002] The bicycle tail hook is the key part of the bicycle rear derailleur system, is usually installed at the rear fork end of the bicycle frame, its main role is connecting the rear derailleur and providing a stable mounting position for it, ensuring that the rear derailleur can work accurately and smoothly, realizing the speed change function of the bicycle, but the existing bicycle tail hook has some shortcomings, for example:

[0003] The existing bicycle tail hook may be twisted and deformed during use due to frequent speed change, which may cause metal fatigue and product damage, posing a danger to the rider, and because of insufficient rigidity, the direct loading tail hook plays a role in fixing the rear derailleur and the bicycle frame, and the rigidity of such tail hook products on the market is insufficient due to excessive cutting and lack of design to increase the rigidity of the product, and the rear derailleur produces a certain tension on the direct loading tail hook due to the change of chain tension during speed change, and insufficient rigidity may cause the direct loading tail hook to deform and affect the speed change accuracy of the rear derailleur.

[0004] Therefore, we propose a titanium alloy direct loading tail hook for bicycle to solve the problems mentioned above. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a titanium alloy direct loading tail hook for bicycle to solve the problem that most bicycle tail hooks on the market may be twisted and deformed due to frequent speed change during use, which may cause metal fatigue and product damage, posing a danger to the rider, and because of insufficient rigidity, the direct loading tail hook plays a role in fixing the rear derailleur and the bicycle frame, and the rigidity of such tail hook products on the market is insufficient due to excessive cutting and lack of design to increase the rigidity of the product, and the rear derailleur produces a certain tension on the direct loading tail hook due to the change of chain tension during speed change, and insufficient rigidity may cause the direct loading tail hook to deform and affect the speed change accuracy of the rear derailleur.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a titanium alloy direct loading tail hook for bicycle, comprising a first main body, a support assembly connected to the left end of the first main body, and a second main body fixedly connected to the left end of the support assembly;

[0007] The first main body is internally provided with an axle body positioning hole, and a tail hook fixing groove is formed at the right end of the first main body, and the support assembly comprises front and rear support sides, the top of the support side is provided with an upper reinforcing rib, the bottom of the support side is provided with a lower reinforcing rib, and the upper reinforcing rib and the lower reinforcing rib are internally provided with light-weight special-shaped groove holes;

[0008] The second main body is internally provided with a rear derailleur connecting ring, the rear derailleur connecting ring is fixedly connected with the left end of the support side, and the rear derailleur connecting ring is internally provided with a threaded groove.

[0009] The support side, the upper reinforcing rib and the lower reinforcing rib are integrally connected and fixed, and the light-weight special-shaped groove holes are formed in the upper reinforcing rib and the lower reinforcing rib, so that the upper reinforcing rib and the lower reinforcing rib form a plurality of triangular fixing member structures to support the inclined side of the support assembly, thereby preventing the support assembly from being deformed due to frequent gear shifting, and the straight-mounted tail hook is light-weighted, and the strength and rigidity of the straight-mounted tail hook are increased.

[0010] As a preferred technical scheme of the utility model, the first main body is externally provided with a guard edge, the guard edge is located outside the axle body positioning hole, a fixing ring is mounted inside the axle body positioning hole, and the fixing ring can be detached from inside the axle body positioning hole.

[0011] The above technical scheme can protect the outside of the connection part of the axle body positioning hole and the connecting shaft of the bicycle when the axle body positioning hole is connected with the connecting shaft of the bicycle, thereby increasing the protection performance of the equipment.

[0012] As a preferred technical scheme of the utility model, the fixing ring is internally provided with a positioning clamping shaft, the positioning clamping shaft can clamp the shaft connected inside the fixing ring, and the top of the fixing ring is provided with a positioning groove.

[0013] The above technical scheme can make the fixing ring more stable when the fixing ring is connected with the frame shaft of the bicycle, thereby increasing the firmness of the equipment during installation.

[0014] As a preferred technical scheme of the utility model, the first main body and the support assembly form an integrated connection structure, and the light-weight special-shaped groove hole separates the upper reinforcing rib and the lower reinforcing rib into triangular fixing members, thereby supporting the top and bottom of the support side.

[0015] The above technical scheme can be more conducive to airflow passing through the upper reinforcing rib and the lower reinforcing rib, thereby avoiding the problem that the airflow affects the support assembly due to the fast riding speed of the bicycle.

[0016] As a preferred technical scheme of the utility model, the inclined edge of the support side is supported by the upper reinforcing rib and the lower reinforcing rib, and the right end of the support side can be fixedly connected with the guard edge.

[0017] The overall strength and rigidity of the supporting assembly are improved, thereby increasing the safety of the straight mounting tail hook during use.

[0018] As a preferred technical scheme of the utility model, the supporting assembly and the second main body form an integrated connection structure, and the supporting side edge left end is provided with a fixed block, and the supporting side edge is fixedly connected with the rear derailleur connecting ring through the fixed block.

[0019] The above technical scheme can make the supporting assembly more stable when fixedly connected with the rear derailleur connecting ring, thereby increasing the firmness of the equipment during installation.

[0020] As a preferred technical scheme of the utility model, the rear derailleur connecting ring is internally connectable with a limiting ring, the top and bottom of the limiting ring are each provided with a group of bearing rings, and the rear derailleur connecting ring can be fixedly connected with the shaft body extended from the rear derailleur through the bearing rings.

[0021] The above technical scheme can make the rear derailleur more stable when connected with the rear derailleur connecting ring, and can make the equipment more stable when connected with different rear derailleurs.

[0022] As a preferred technical scheme of the utility model, the first main body, the supporting assembly and the second main body are all titanium alloy structures, and the first main body, the supporting assembly and the second main body are wrapped with a corrosion-resistant film for protection.

[0023] The above technical scheme can protect the first main body, the supporting assembly and the second main body through the corrosion-resistant film, thereby increasing the protection performance of the equipment during use.

[0024] Compared with the prior art, the utility model has the beneficial effects that: the supporting side edge in the supporting assembly is integrally connected and fixed with the upper and lower reinforcing ribs, and the upper and lower reinforcing ribs are provided with a slot hole through the light-weight special-shaped slot hole, so that the upper and lower reinforcing ribs form a plurality of triangular fixed part structures to support the inclined side edge of the supporting assembly, thereby preventing the supporting assembly from deforming due to frequent gear shifting, and increasing the strength and rigidity of the straight mounting tail hook while lightening the straight mounting tail hook.

[0025] Further, the setting of the protective edge can protect the outside of the connection between the shaft body positioning hole and the connecting shaft of the bicycle, thereby increasing the protection performance of the equipment.

[0026] Further, by lightening the upper and lower reinforcing ribs, the airflow can pass through the upper and lower reinforcing ribs more easily, thereby avoiding the problem of airflow affecting the support assembly due to the fast speed of the bicycle. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a front elevation structure schematic diagram of the utility model;

[0028] Figure 2 It is a bottom elevation structure schematic diagram of the utility model;

[0029] Figure 3 It is a three-dimensional structure schematic diagram of the fixed ring disassembly of the utility model;

[0030] Figure 4 It is a front elevation structure schematic diagram of embodiment 2 of the utility model;

[0031] Figure 5 It is a three-dimensional structure schematic diagram of the fixed ring of embodiment 2 of the utility model;

[0032] Figure 6 It is a front elevation structure schematic diagram of embodiment 3 of the utility model.

[0033] In the drawing: 1, first main body; 101, shaft body positioning hole; 102, guard edge; 103, tail hook fixing groove; 104, fixed ring; 105, positioning clamping shaft; 106, positioning groove; 2, support assembly; 201, support side edge; 202, upper reinforcing rib; 203, lower reinforcing rib; 204, lightened special-shaped groove; 3, second main body; 301, rear derailleur connecting ring; 302, threaded groove; 303, limiting ring; 304, bearing ring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0035] Embodiment 1: In order to solve the problem of deformation of the straight-mounted tail hook due to insufficient rigidity and strength in the prior art when frequently used, the following scheme is disclosed, please refer to Figures 1-5 The utility model provides a technical scheme: a titanium alloy straight-mounted tail hook for a bicycle, comprising a first main body 1, a support assembly 2 connected with the left end of the first main body 1, and a second main body 3 fixedly connected with the left end of the support assembly 2;

[0036] The first body 1 is internally provided with an axle body positioning hole 101, and a tail hook fixing groove 103 is formed at the right end of the first body 1, and the support assembly 2 comprises front and rear two groups of support side edges 201, the top of the support side edge 201 is provided with an upper reinforcing rib 202, and the bottom of the support side edge 201 is provided with a lower reinforcing rib 203, and the upper reinforcing rib 202 and the lower reinforcing rib 203 are internally provided with a light-weight special-shaped groove hole 204;

[0037] The second body 3 is internally provided with a rear derailleur connecting ring 301, and the rear derailleur connecting ring 301 is fixedly connected with the left end of the support side edge 201, and the rear derailleur connecting ring 301 is internally provided with a threaded groove 302;

[0038] The first body 1 is externally provided with a guard edge 102, and the guard edge 102 is located outside the axle body positioning hole 101, and a fixing ring 104 is mounted inside the axle body positioning hole 101, and the fixing ring 104 can be disassembled from inside the axle body positioning hole 101;

[0039] The first body 1 and the support assembly 2 form an integrated connection structure, and the light-weight special-shaped groove hole 204 separates the upper reinforcing rib 202 and the lower reinforcing rib 203 into respective triangular fixed parts, thereby supporting the top and bottom of the support side edge 201;

[0040] The oblique side of the support side edge 201 is supported by the upper reinforcing rib 202 and the lower reinforcing rib 203, and the right end of the support side edge 201 can be fixedly connected with the guard edge 102, the support assembly 2 and the second body 3 form an integrated connection structure, and the left end of the support side edge 201 is provided with a fixing block, and the support side edge 201 is fixedly connected with the rear derailleur connecting ring 301 through the fixing block.

[0041] In this embodiment, another connection mode of the bicycle frame axle is disclosed, which is different from that of the first embodiment, and specifically as shown in Figures 4-5 The difference between this embodiment and the first embodiment is that the fixing ring 104 is internally provided with a positioning clamping shaft 105, and the positioning clamping shaft 105 can clamp the axle body connected inside the fixing ring 104, and the top of the fixing ring 104 is provided with a positioning groove 106;

[0042] When the fixing ring 104 is connected with the axle body of the bicycle frame, the positioning clamping shaft 105 provided inside the fixing ring 104 can be clamped with the axle body of the bicycle frame, and then the positioning groove 106 provided at the top of the fixing ring 104 is connected with the outside of the axle body of the bicycle frame to limit, so that the axle body positioning hole 101 can be more stable when connected with the axle body of the bicycle frame.

[0043] In this embodiment, another connection mode of the rear derailleur is disclosed, which is different from that of the first embodiment, and specifically as shown in Figure 6As shown, the embodiment is different from example 1 in that the rear derailleur connecting ring 301 is internally connected with a limiting ring 303, and a group of bearing rings 304 are arranged at the top and bottom of the limiting ring 303, and the rear derailleur connecting ring 301 can be fixedly connected with the shaft body extended from the rear derailleur through the bearing rings 304.

[0044] Working principle: when the titanium alloy straight mounting tail hook for bicycle is used, first, the shaft body positioning hole 101 arranged in the first main body 1 is connected with the extended shaft body of the bicycle frame, and the tail hook fixing groove 103 is fixedly connected with the bicycle frame, so that the straight mounting tail hook is fixed on the bicycle frame, and then the rear derailleur connecting ring 301 arranged in the second main body 3 is connected with the shaft body extended from the rear derailleur.

[0045] When the rear derailleur changes position due to gear shifting, the straight mounting tail hook also rotates around the shaft body positioning hole 101 as the center, so that the support side edge 201 in the support assembly 2 supports the first main body 1 and the second main body 3, and the upper reinforcing rib 202 and the lower reinforcing rib 203 also support the support side edge 201, and the light-weight special-shaped slot hole 204 arranged in the upper reinforcing rib 202 and the lower reinforcing rib 203 can make the airflow pass through the upper reinforcing rib 202 and the lower reinforcing rib 203 better, so that the rigidity and strength of the straight mounting tail hook are increased, and the problem of deformation is avoided.

[0046] Thus, a series of work is completed, and the contents not described in detail in the specification belong to the prior art known by those skilled in the art.

[0047] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A titanium alloy straight tail hook for bicycles, comprising a first body (1), a support assembly (2) connected to the left end of the first body (1), and a second body (3) fixedly connected to the left end of the support assembly (2); Characterized in that: The first body (1) is internally provided with an axle body positioning hole (101), and a tail hook fixing groove (103) is formed at the right end of the first body (1), and the support assembly (2) comprises two groups of front and rear support sides (201), the top of the support side (201) is provided with an upper reinforcing rib (202), the bottom of the support side (201) is provided with a lower reinforcing rib (203), and the inside of the upper reinforcing rib (202) and the lower reinforcing rib (203) is provided with a lightweight special-shaped slot hole (204); The second body (3) is internally provided with a rear derailleur connecting ring (301), the rear derailleur connecting ring (301) is fixedly connected to the left end of the support side (201), and the rear derailleur connecting ring (301) is internally provided with a threaded groove (302).

2. The titanium alloy straight-mounting tail hook for a bicycle according to claim 1, characterized by The first body (1) is externally provided with a guard edge (102), the guard edge (102) is located outside the axle body positioning hole (101), and a fixing ring (104) is mounted inside the axle body positioning hole (101), the fixing ring (104) can be disassembled from the inside of the axle body positioning hole (101).

3. The titanium alloy straight-mounting tail hook for a bicycle according to claim 2, characterized by The inside of the fixing ring (104) is provided with a positioning clamping shaft (105), the positioning clamping shaft (105) can clamp the axle body connected inside the fixing ring (104), and the top of the fixing ring (104) is provided with a positioning groove (106).

4. The titanium alloy straight tail hook for a bicycle according to claim 2, characterized by The first body (1) and the support assembly (2) form an integrated connection structure, and the lightweight special-shaped slot hole (204) separates the upper reinforcing rib (202) and the lower reinforcing rib (203) into various triangular fixing pieces, thereby supporting the top and bottom of the support side (201).

5. The titanium alloy straight-mounting tail hook for a bicycle according to claim 4, characterized by The oblique side of the support side (201) is supported by the upper reinforcing rib (202) and the lower reinforcing rib (203), and the right end of the support side (201) can be fixedly connected with the guard edge (102).

6. The titanium alloy straight-mounting tail hook for a bicycle according to claim 4, characterized by The support assembly (2) and the second body (3) form an integrated connection structure, the left end of the support side (201) is provided with a fixing block, and the support side (201) is fixedly connected with the rear derailleur connecting ring (301) through the fixing block.

7. The titanium alloy straight-mounting tail hook for a bicycle according to claim 1, characterized by The inside of the rear derailleur connecting ring (301) is provided with a limiting ring (303), the top and bottom of the limiting ring (303) are each provided with a group of bearing rings (304), and the rear derailleur connecting ring (301) can be fixedly connected with the axle body extended by the rear derailleur through the bearing ring (304).

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