Center shaft sleeving structure of bicycle

Abstract

The invention discloses a bicycle center shaft sleeving structure, which belongs to the technical field of bearings, and is characterized in that the bicycle center shaft sleeving structure comprises a release bearing seat, a sealing assembly is arranged at the top end of the release bearing seat, and a fixing assembly is arranged at the bottom of the release bearing seat. The deep groove ball bearing is connected to the periphery of the supporting sleeve in a sleeving mode along the release bearing seat, then the sealing cover penetrates through the release bearing seat to wrap the deep groove ball bearing, and then the supporting sleeve and the sealing cover are locked and fixed through the hand screwing bolt, so that the deep groove ball bearing can be located in a space formed by the supporting sleeve and the sealing cover, and the sealing performance is greatly improved; according to the deep groove ball bearing, lubricating oil leakage caused by long-time work is avoided, meanwhile, the deep groove ball bearing can be conveniently disassembled and overhauled in the later period, the deep groove ball bearing connected to the periphery of the supporting sleeve in a sleeving mode can be positioned through the positioning assembly, and the stability between the deep groove ball bearing and the supporting sleeve is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, and in particular to a bicycle middle shaft sleeve structure. Background Art

[0002] With the development of economy, the degree of green and environmentally friendly travel is getting higher and higher, and the overall scale of the bicycle industry is showing an upward trend. In particular, bicycles are becoming more and more convenient, fast and fashionable.

[0003] The existing bearing positioning clamp ring structure is a clamping positioning, and its open sleeve is positioned outside the bearing seat. It is subjected to torsional friction during use, which may cause slippage. In addition, the existing bicycle center shaft set structure has the following defects: first, the two bearing seats are independent of each other, the stability is poor, and the material is iron, which is heavy; second, the sealing is poor, dust is easy to enter, resulting in a decrease in the service life of the bearing, and its positioning firmness is not good. The stability of the separate bearing after assembly needs to be improved.

[0004] In view of the above problems, existing patents have provided solutions, but the sealing between the release bearing seat, the deep groove ball bearing and the release bearing sleeve is poor, which can easily lead to oil leakage when the release bearing works for a long time.

[0005] Therefore, a bicycle middle shaft set structure is proposed. Summary of the invention

[0006] 1. Technical issues to be solved The invention provides a bicycle middle shaft set structure, aiming to solve the problem that the sealing performance among a separation bearing seat, a deep groove ball bearing and a separation bearing sleeve is poor in the existing bicycle middle shaft set structure, which easily leads to oil leakage of the separation bearing when working for a long time.

[0007] 2. Technical solution The present invention is implemented as follows: a bicycle middle shaft set structure includes a separation bearing seat, a sealing component is arranged at the top of the separation bearing seat, and a fixing component is arranged at the bottom of the separation bearing seat; The sealing assembly includes a support sleeve, a deep groove ball bearing, a sealing cover, a hand-tightening bolt and a positioning assembly. The support sleeve is sleeved on the top of the separation bearing seat and fixedly connected to the separation bearing seat. The deep groove ball bearing is sleeved on the periphery of the support sleeve. The sealing cover is sleeved on the top of the separation bearing seat and is used in conjunction with the support sleeve. A plurality of the hand-tightening bolts penetrate the side wall of the support sleeve to the interior of the sealing cover. The positioning assembly is arranged between the support sleeve and the deep groove ball bearing.

[0008] In order to position the deep groove ball bearing sleeved on the periphery of the support sleeve and greatly improve the stability between the deep groove ball bearing and the support sleeve, as a preferred structure of a bicycle middle shaft set of the present invention, the positioning component includes a positioning block and a positioning groove, the two positioning blocks are fixedly connected to the side wall of the support sleeve and are symmetrically arranged, and the positioning groove is opened on the inner side wall of the deep groove ball bearing and is plugged into the positioning block.

[0009] In order to facilitate fixing the release bearing seat in a specified position and improve the convenience of the installation process, as a preferred bicycle axle set structure of the present invention, the fixing component includes a fixing seat, a fixing ear and a mounting hole, the fixing seat is fixedly connected to the bottom end of the release bearing seat, and a plurality of the fixing ears are fixedly connected to the side walls of the fixing seat and are evenly distributed, and the mounting hole is opened at the top of the fixing ear and passes through the fixing ear.

[0010] In order to improve the strength of the connection between the fixed seat and the release bearing seat, as a preferred bicycle axle set structure of the present invention, an installation cavity is opened on the top of the fixed seat, and a plurality of reinforcing blocks are fixedly connected to the inside of the installation cavity, and the two ends of the plurality of reinforcing blocks are respectively fixedly connected to the inner wall of the installation cavity and the side wall of the release bearing seat.

[0011] In order to facilitate the unified discharge of the lubricating oil inside the support sleeve at a later time, as a preferred structure of a bicycle middle shaft set of the present invention, the bottom of the support sleeve is fixedly connected with an oil drain pipe, the top of the oil drain pipe passes through the bottom of the support sleeve, and the bottom end of the oil drain pipe is spirally connected with a plugging cover.

[0012] In order to improve the sealing between the sealing cover and the support sleeve and prevent the lubricating oil from leaking from the gap between the sealing cover and the support sleeve, as a preferred structure of a bicycle middle shaft set of the present invention, an L-shaped sealing gasket is arranged between the sealing cover and the support sleeve, and the L-shaped sealing gasket is fixedly connected to the bottom of the sealing cover.

[0013] In order to greatly improve the strength of the connection between the fixed seat and the release bearing seat, and also to greatly improve the stability between the sealing cover and the support sleeve, as a preferred structure of a bicycle middle shaft set of the present invention, a plurality of the reinforcing blocks are equidistantly distributed circumferentially inside the installation cavity, and a plurality of the hand-tightened bolts are equidistantly distributed circumferentially on the side wall of the support sleeve.

[0014] In order to greatly extend the service life of the L-shaped sealing gasket and avoid damage caused by scratches between the deep groove ball bearing and the sealing cover and the support sleeve, as a preferred structure of a bicycle middle shaft set of the present invention, the L-shaped sealing gasket is made of flexible rubber material, and the support sleeve and the sealing cover are made of wear-resistant alloy material.

[0015] 3. Beneficial effects Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a sealing component, sleeves the deep groove ball bearing along the release bearing seat on the periphery of the support sleeve, passes the sealing cover through the release bearing seat to wrap the deep groove ball bearing, and then uses hand-tightened bolts to lock and fix the support sleeve and the sealing cover, so that the deep groove ball bearing is in the space formed by the support sleeve and the sealing cover, which greatly improves the sealing performance and avoids lubricating oil leakage caused by long-term operation, thereby effectively solving the problem of poor sealing among the release bearing seat, deep groove ball bearing and release bearing sleeve in the prior art, which easily leads to oil leakage of the release bearing after long-term operation.

[0016] 2. The present invention can position the deep groove ball bearing sleeved on the periphery of the support sleeve by providing a positioning component, thereby greatly improving the stability between the deep groove ball bearing and the support sleeve.

[0017] 3. The present invention provides a fixing assembly to facilitate fixing the release bearing seat at a specified position, thereby improving the convenience of the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structure diagram of the present invention; Figure 2 It is a right side view of the present invention; Figure 3 It is a schematic diagram of a three-dimensional cross section at AA of the present invention; Figure 4 The present invention Figure 3 The enlarged view of point A in the middle; Figure 5 is a schematic diagram of a sealing assembly of the present invention; Figure 6 is a schematic diagram of a positioning assembly of the present invention; Figure 7 It is a schematic diagram of the fixing assembly of the present invention.

[0019] Description of the numbers in the figure: 1. Separate bearing seat; 2. Sealing assembly; 201. Support sleeve; 202. Deep groove ball bearing; 203. Sealing cover; 204. Tightening bolt; 205. Positioning assembly; 2051. Positioning block; 2052. Positioning groove; 3. Fixing assembly; 301. Fixing seat; 302. Fixing ear; 303. Mounting hole; 4. Mounting cavity; 5. Reinforcement block; 6. Oil drain pipe; 7. Plug cover; 8. L-shaped sealing gasket. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] See also Figure 1-7 The present invention provides a technical solution: a bicycle middle shaft set structure, comprising a separation bearing seat 1, a sealing component 2 is arranged at the top of the separation bearing seat 1, and a fixing component 3 is arranged at the bottom of the separation bearing seat 1; The sealing assembly 2 includes a support sleeve 201, a deep groove ball bearing 202, a sealing cover 203, a hand-tightening bolt 204 and a positioning assembly 205. The support sleeve 201 is sleeved on the top of the separation bearing seat 1 and is fixedly connected to the separation bearing seat 1. The deep groove ball bearing 202 is sleeved on the periphery of the support sleeve 201. The sealing cover 203 is sleeved on the top of the separation bearing seat 1 and is used in conjunction with the support sleeve 201. A plurality of hand-tightening bolts 204 penetrate the side wall of the support sleeve 201 to the interior of the sealing cover 203. The positioning assembly 205 is arranged between the support sleeve 201 and the deep groove ball bearing 202.

[0022] In this embodiment: by providing a support sleeve 201, a deep groove ball bearing 202, a sealing cover 203, a hand-tightening bolt 204, a positioning component 205 and a fixing component 3, when in use, the deep groove ball bearing 202 is sleeved on the periphery of the support sleeve 201 along the separation bearing seat 1, and then the sealing cover 203 is passed through the separation bearing seat 1 to wrap the deep groove ball bearing 202, and then the support sleeve 201 and the sealing cover 203 are locked and fixed using the hand-tightening bolt 204, so that the deep groove ball bearing 202 will be in the space formed by the support sleeve 201 and the sealing cover 203, which greatly improves the sealing performance and avoids the leakage of lubricating oil caused by long-term work. At the same time, it is convenient to disassemble and repair the deep groove ball bearing 202 at a later time. By providing the positioning component 205, the deep groove ball bearing 202 sleeved on the periphery of the support sleeve 201 can be positioned, which greatly improves the stability between the deep groove ball bearing 202 and the support sleeve 201. By providing the fixing component 3, it is convenient to fix the separation bearing seat 1 at a specified position, thereby improving the convenience of the installation process.

[0023] As a technical optimization solution of the present invention, the positioning assembly 205 includes a positioning block 2051 and a positioning groove 2052. The two positioning blocks 2051 are fixedly connected to the side wall of the support sleeve 201 and are symmetrically arranged. The positioning groove 2052 is opened on the inner wall of the deep groove ball bearing 202 and is plugged into the positioning block 2051.

[0024] In this embodiment, by providing the positioning block 2051 and the positioning groove 2052 , the deep groove ball bearing 202 sleeved on the outer periphery of the support sleeve 201 can be positioned, thereby greatly improving the stability between the deep groove ball bearing 202 and the support sleeve 201 .

[0025] As a technical optimization solution of the present invention, the fixing component 3 includes a fixing seat 301, a fixing ear 302 and a mounting hole 303. The fixing seat 301 is fixedly connected to the bottom end of the separation bearing seat 1. Multiple fixing ears 302 are fixedly connected to the side walls of the fixing seat 301 and are evenly distributed. The mounting hole 303 is opened at the top of the fixing ear 302 and passes through the fixing ear 302.

[0026] In this embodiment, by providing the fixing seat 301 , the fixing ears 302 and the mounting holes 303 , it is convenient to fix the release bearing seat 1 at a designated position, thereby improving the convenience of the installation process.

[0027] As a technical optimization solution of the present invention, an installation cavity 4 is opened on the top of the fixed seat 301, and a plurality of reinforcing blocks 5 are fixedly connected inside the installation cavity 4. The two ends of the plurality of reinforcing blocks 5 are respectively fixedly connected to the inner wall of the installation cavity 4 and the side wall of the separation bearing seat 1.

[0028] In this embodiment, by providing the installation cavity 4 and the reinforcement block 5 , the strength of the connection between the fixing seat 301 and the release bearing seat 1 can be improved.

[0029] As a technical optimization solution of the present invention, the bottom of the support sleeve 201 is fixedly connected with an oil drain pipe 6, the top of the oil drain pipe 6 passes through the bottom of the support sleeve 201, and the bottom end of the oil drain pipe 6 is spirally connected with a plugging cover 7.

[0030] In this embodiment, the oil drain pipe 6 and the plugging cover 7 are provided to facilitate the unified discharge of the lubricating oil inside the support sleeve 201 at a later stage.

[0031] As a technical optimization solution of the present invention, an L-shaped sealing gasket 8 is provided between the sealing cover 203 and the supporting sleeve 201 , and the L-shaped sealing gasket 8 is fixedly connected to the bottom of the sealing cover 203 .

[0032] In this embodiment, by providing an L-shaped sealing gasket 8 , the sealing performance between the sealing cover 203 and the support sleeve 201 can be improved, thereby preventing the lubricating oil from leaking from the gap between the sealing cover 203 and the support sleeve 201 .

[0033] As a technical optimization solution of the present invention, a plurality of reinforcing blocks 5 are equidistantly distributed circumferentially inside the installation cavity 4 , and a plurality of hand-tightening bolts 204 are equidistantly distributed circumferentially on the side wall of the support sleeve 201 .

[0034] In this embodiment: by arranging reinforcing blocks 5 equidistantly distributed circumferentially inside the installation cavity 4 and hand-tightened bolts 204 equidistantly distributed circumferentially on the side wall of the support sleeve 201, the strength of the connection between the fixed seat 301 and the separation bearing seat 1 can be greatly improved, and the stability between the sealing cover 203 and the support sleeve 201 can also be greatly improved.

[0035] As a technical optimization solution of the present invention, the L-shaped sealing gasket 8 is made of flexible rubber material, and the support sleeve 201 and the sealing cover 203 are made of wear-resistant alloy material.

[0036] In this embodiment: by setting an L-shaped sealing gasket 8 made of flexible rubber material and a support sleeve 201 made of wear-resistant alloy material, the flexible rubber material has the advantages of elasticity and good sealing performance, which greatly extends the service life of the L-shaped sealing gasket 8. The wear-resistant alloy material has the advantages of good wear resistance and high hardness, which can avoid damage caused by scratches between the deep groove ball bearing 202 and the sealing cover 203 and the support sleeve 201.

[0037] Working principle: First, the deep groove ball bearing 202 is sleeved on the periphery of the support sleeve 201 along the separation bearing seat 1. When the deep groove ball bearing 202 is sleeved on the periphery of the support sleeve 201, the positioning groove 2052 on the deep groove ball bearing 202 is inserted along the track of the positioning block 2051, so that the deep groove ball bearing 202 sleeved on the periphery of the support sleeve 201 can be positioned, which greatly improves the stability between the deep groove ball bearing 202 and the support sleeve 201. Then, the sealing cover 203 is passed through the separation bearing seat 1 to wrap the deep groove ball bearing 202, and then the support sleeve 201 and the support sleeve 201 are tightened with the hand bolts 204. The sealing cover 203 is locked and fixed, so that the deep groove ball bearing 202 will be in the space formed by the support sleeve 201 and the sealing cover 203, which greatly improves the sealing performance and avoids the leakage of lubricating oil caused by long-term operation. At the same time, it is convenient to disassemble and repair the deep groove ball bearing 202 at a later time. The L-shaped sealing gasket 8 can improve the sealing performance between the sealing cover 203 and the support sleeve 201 and avoid the leakage of lubricating oil from the gap between the sealing cover 203 and the support sleeve 201. The screws are used to pass through the mounting holes 303 on the fixing ears 302, so as to facilitate the fixing of the separation bearing seat 1 at the specified position and improve the convenience of the installation process.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bicycle middle shaft set structure, comprising a separation bearing seat (1), characterized in that: A sealing component (2) is disposed at the top of the release bearing seat (1), and a fixing component (3) is disposed at the bottom of the release bearing seat (1); The sealing assembly (2) comprises a support sleeve (201), a deep groove ball bearing (202), a sealing cover (203), a hand-tightening bolt (204) and a positioning assembly (205); the support sleeve (201) is sleeved on the top of the separation bearing seat (1) and is fixedly connected to the separation bearing seat (1); the deep groove ball bearing (202) is sleeved on the periphery of the support sleeve (201); the sealing cover (203) is sleeved on the top of the separation bearing seat (1) and is used in conjunction with the support sleeve (201); a plurality of the hand-tightening bolts (204) penetrate the side wall of the support sleeve (201) to the interior of the sealing cover (203); and the positioning assembly (205) is arranged between the support sleeve (201) and the deep groove ball bearing (202).

2. The bicycle middle shaft set structure according to claim 1, characterized in that: The positioning assembly (205) comprises a positioning block (2051) and a positioning groove (2052), the two positioning blocks (2051) are fixedly connected to the side wall of the support sleeve (201) and are symmetrically arranged, and the positioning groove (2052) is opened on the inner side wall of the deep groove ball bearing (202) and is plugged into the positioning block (2051).

3. The bicycle middle shaft set structure according to claim 1, characterized in that: The fixing assembly (3) comprises a fixing seat (301), a fixing ear (302) and a mounting hole (303); the fixing seat (301) is fixedly connected to the bottom end of the separation bearing seat (1); a plurality of fixing ears (302) are fixedly connected to the side wall of the fixing seat (301) and are evenly distributed; and the mounting hole (303) is opened at the top of the fixing ear (302) and penetrates the fixing ear (302).

4. The bicycle middle shaft set structure according to claim 3, characterized in that: The top of the fixing seat (301) is provided with a mounting cavity (4), the interior of the mounting cavity (4) is fixedly connected with a plurality of reinforcing blocks (5), and the two ends of the plurality of reinforcing blocks (5) are respectively fixedly connected to the inner side wall of the mounting cavity (4) and the side wall of the separation bearing seat (1).

5. The bicycle middle shaft set structure according to claim 1, characterized in that: The bottom of the support sleeve (201) is fixedly connected to an oil drain pipe (6), the top end of the oil drain pipe (6) passes through the bottom of the support sleeve (201), and the bottom end of the oil drain pipe (6) is spirally connected to a plugging cap (7).

6. The bicycle middle shaft set structure according to claim 1, characterized in that: An L-shaped sealing gasket (8) is provided between the sealing cover (203) and the supporting sleeve (201), and the L-shaped sealing gasket (8) is fixedly connected to the bottom of the sealing cover (203).

7. The bicycle middle shaft set structure according to claim 4, characterized in that: The plurality of reinforcement blocks (5) are equidistantly distributed circumferentially inside the installation cavity (4), and the plurality of hand-tightening bolts (204) are equidistantly distributed circumferentially on the side wall of the support sleeve (201).

8. The bicycle middle shaft set structure according to claim 6, characterized in that: The L-shaped sealing pad (8) is made of a flexible rubber material, and the supporting sleeve (201) and the sealing cover (203) are made of a wear-resistant alloy material.

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