Bicycle hub convenient to maintain

Abstract

The utility model relates to the technical field of hubs, in particular to a bicycle hub convenient to maintain, which comprises a hub shell and a tower footing main body, one side of the tower footing main body is provided with a sliding chute, a pressing cover is slidably mounted in the sliding chute, two sides of the pressing cover are respectively and fixedly provided with a sliding block, and the sliding blocks are arranged in the sliding chute. The two sides of the tower footing body are each fixedly provided with a sliding groove, a supporting sliding rod is fixed in each sliding groove, the sliding blocks extend into the sliding grooves and are arranged on the outer sides of the supporting sliding rods in a sliding and sleeving mode, and the outer sides of the supporting sliding rods are sleeved with springs. The pressing cover is pushed into the sliding groove again through extrusion, in the process that the pressing cover is contained in the sliding groove, part of the area of the multiple thousand-gold teeth is clamped into the ratchet ring, after the pressing cover completely enters the sliding groove, the multiple thousand-gold teeth are completely clamped into the ratchet ring, and therefore the pressing cover is pushed into the sliding groove again. And therefore, the tower footing main body is convenient to disassemble and assemble, and the mounting difficulty after the maintenance of the hub is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hubs, in particular to a bicycle hub which is easy to maintain. Background Art

[0002] The hub, commonly known as the "hub barrel", is the barrel outside the axle that connects to the spokes, and is usually called the axle skin. Depending on the number of spokes, there are generally 3-spoke and 5-spoke arrangements. There are two types of hubs: iron hubs and aluminum hubs.

[0003] The existing hub needs to be maintained and repaired on the freewheel base installed on one side of the hub during installation and use. Therefore, the freewheel base needs to be frequently disassembled and assembled. A plurality of tines are movably installed on one side of the freewheel base to cooperate with the ratchet teeth. When the freewheel base is removed, one end of the plurality of tines is released from the pressure of the ratchet ring, causing one end of the tines to pop out and tilt up. During reinstallation, the tilted end of the tines will make it impossible for one side of the freewheel base to be stuck into the inside of one side of the hub. The operator needs to press down all the tilted tines to stick the freewheel base into one side of the hub. The installation process is very cumbersome, which increases the difficulty of disassembly and assembly after maintenance and repair of the hub.

[0004] The invention specially proposes a bicycle hub which is easy to maintain for this reason. Utility Model Content

[0005] The purpose of the present invention is to provide a bicycle hub that is easy to maintain, so as to solve the problems raised in the above-mentioned background technology. In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bicycle hub that is easy to maintain, comprising a hub shell and a tower base body, a middle shaft is installed inside the hub shell, a dust cover and a tower base body are fixed at both ends of the middle shaft, a slide groove is provided on one side of the tower base body, a pressure cover is slidably installed inside the slide groove, a slider is fixed on both sides of the pressure cover, a sliding groove is fixed on both sides of the tower base body, a supporting slide rod is fixed inside the sliding groove, the slider extends into the sliding groove and the sliding sleeve is arranged on the outside of the support slide rod, and the outside of the support slide rod is sleeved with a spring.

[0006] Preferably, a ratchet ring is installed on the inner wall of one end of the hub shell, and a toothed disc is installed on one end of the freehub body.

[0007] Preferably, a plurality of mounting grooves are provided at equal distances on the outer side of the toothed disc, and teeth and springs are installed inside the mounting grooves, and the teeth and springs are used in conjunction with each other.

[0008] Preferably, the inner diameter of the pressure cover is equal to the inner diameter of the ratchet ring.

[0009] Preferably, thread grooves are respectively provided on the outer sides of both ends of the central shaft, and the dust cover is meshedly connected with the thread groove provided on one end of the central shaft.

[0010] Preferably, one end of the central shaft is connected to a fixing nut through threaded engagement, and the fixing nut is located on one side of the tower base body.

[0011] Compared with the prior art, the present invention provides a bicycle hub that is easy to maintain and has the following beneficial effects:

[0012] The pressure cover is ejected to compress and contract the multiple teeth again, preventing one end of the teeth from tilting up. Then, when the freehub body is installed into one side of the hub shell, the pressure cover is pushed into the inside of the slide groove again by squeezing. In the process of the pressure cover being stored in the slide groove, part of the area of ​​the multiple teeth has been stuck in the inside of the ratchet ring. When the pressure cover is completely entered into the slide groove, the multiple teeth have also been completely stuck in the inside of the ratchet ring, which facilitates the disassembly and assembly of the freehub body and reduces the difficulty of installation after maintenance of the hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0014] Figure 2 This is a side structural diagram of the tower base main body of the utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of the ratchet ring and the toothed disc of the utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the tower base body of the utility model;

[0017] Figure 5 For this utility model Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 6 For this utility model Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0019] In the figure: 1. Hub shell; 2. Dust cover; 3. Bottom bracket; 4. Fixing nut; 5. Freehub body; 6. Ratchet ring; 7. Sprocket; 8. Gear; 9. Spring; 10. Mounting slot; 11. Spring; 12. Slider; 13. Sliding slot; 14. Support slide rod; 15. Pressure cover; 16. Sliding slot. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: A central shaft 3 is installed inside the hub shell 1, and a dust cover 2 and a freehub base body 5 are fixed at both ends of the central shaft 3. A slide groove 16 is provided on one side of the freehub base body 5, and a pressure cover 15 is slidably installed inside the slide groove 16. A slider 12 is fixed on both sides of the pressure cover 15, and a sliding groove 13 is fixed on both sides of the freehub base body 5. A supporting slide rod 14 is fixed inside the sliding groove 13. The slider 12 extends into the sliding groove 13 and is slidably sleeved on the outside of the supporting slide rod 14. A spring 11 is sleeved on the outside of the supporting slide rod 14.

[0022] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, when the freewheel base body 5 is installed on one side of the hub shell 1, the toothed disc 7 installed at one end of the freewheel base body 5 will be stuck in the inside of the ratchet ring 6, so that the multiple teeth 8 installed on the outside of the toothed disc 7 are stuck in the inside of the ratchet ring 6, thereby ensuring the normal use of the hub. At the same time, after the freewheel base body 5 is installed on one side of the hub shell 1, the pressure cover 15 can be pressed into the inside of the slide groove 16 by squeezing one side of the ratchet ring 6. Since the sliders 12 installed on both sides of the pressure cover 15 extend into the inside of the sliding groove 13 and are slidably sleeved on the outside of the support slide rod 14, when the pressure cover 15 is squeezed and pressed into the inside of the slide groove 16, the slider 12 will slide along the installation direction of the support slide rod 14, and at the same time compress the spring 11 sleeved on the outside of the support slide rod 14. When the freewheel base body 5 is removed, one side of the freewheel base body 5 is separated from one side of the ratchet ring 6. At this time, the pressure on one end of the pressure cover 15 disappears, and the compressed spring 11 produces a directional action When the pressure cover 15 is fully entered into the slide groove 16, the plurality of golden teeth 8 are also fully stuck in the interior of the ratchet ring 6, thereby facilitating the disassembly and assembly of the freewheeling body 5, and reducing the difficulty of installation after maintenance of the hub.

[0023] Example 2: A ratchet ring 6 is installed on the inner wall of one end of the hub shell 1, and a sprocket 7 is installed on one end of the base body 5. A plurality of mounting grooves 10 are opened at equal intervals on the outer side of the sprocket 7, and a tooth 8 and a spring piece 9 are installed inside the mounting groove 10. The tooth 8 and the spring piece 9 are used together. The inner ring diameter of the pressure cover 15 is equal to the inner ring diameter of the ratchet ring 6. Thread grooves are respectively opened on the outer sides of the two ends of the middle shaft 3, and the dust cover 2 is meshed with the thread groove opened at one end of the middle shaft 3. One end of the middle shaft 3 is connected to a fixing nut 4 through threaded engagement, and the fixing nut 4 is located on one side of the base body 5.

[0024] Specifically, such as Figure 1 、 Figure 2 and Figure 3As shown, the spring piece 9 can ensure that one end of the tooth 8 can be stuck into the inside of the ratchet ring 6. Since the inner ring diameter of the pressure cover 15 is equal to the inner ring diameter of the ratchet ring 6, the normal installation of the tower base body 5 can be guaranteed. Since one side of the hub shell 1 is connected to the dust cover 2 through threaded engagement, the inside of the hub shell 1 can be dust-proofed through the dust cover 2, thereby reducing the degree of contamination inside the hub shell 1 and ensuring its service life.

[0025] Working principle: When the freewheel base body 5 is removed, one side of the freewheel base body 5 is separated from one side of the ratchet ring 6. At this time, the pressure on one end of the pressure cover 15 disappears, and the compressed spring 11 generates a directional force to push the pressure cover 15 out of the inside of the slide groove 16. At this time, the toothed disc 7 installed on one end of the freewheel base body 5 has not been completely removed from the inside of the ratchet ring 6. One end of the multiple teeth 8 is still compressed by the inner ring of the ratchet ring 6 and is in a contracted state. When one end of the freewheel base body 5 is separated from one side of the ratchet ring 6, the pressure cover 15 will pop out, thereby pressing the multiple teeth 8 again. The sprocket 7 is forced to shrink to avoid the situation where one end of the gear 8 is lifted up. Then, when the freewheel base body 5 is installed into one side of the hub shell 1, the sprocket 7 is stuck into the inside of the ratchet ring 6, and the pressure cover 15 is pushed into the inside of the slide groove 16 again by squeezing. In the process of the pressure cover 15 being received into the inside of the slide groove 16, part of the area of ​​​​the gears 8 has been stuck into the inside of the ratchet ring 6. When the pressure cover 15 is completely entered into the inside of the slide groove 16, the gears 8 have also been completely stuck into the inside of the ratchet ring 6, thereby completing the installation of the hub shell 1 and the freewheel base body 5.

[0026] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A bicycle hub that is easy to maintain, comprising a hub shell (1) and a freehub body (5), characterized in that: A central shaft (3) is installed inside the hub shell (1), and a dust cover (2) and a tower base body (5) are fixed to both ends of the central shaft (3). A sliding groove (16) is provided on one side of the tower base body (5), and a pressure cover (15) is slidably installed inside the sliding groove (16). A slider (12) is fixed on both sides of the pressure cover (15), and a sliding groove (13) is fixed on both sides of the tower base body (5). A supporting slide bar (14) is fixed inside the sliding groove (13). The slider (12) extends into the sliding groove (13) and is slidably sleeved on the outside of the supporting slide bar (14). The outside of the supporting slide bar (14) is sleeved with a spring (11).

2. The bicycle hub that is easy to maintain according to claim 1, characterized in that: A ratchet ring (6) is installed on the inner wall of one end of the hub shell (1), and a toothed disc (7) is installed on one end of the tower base body (5).

3. The bicycle hub that is easy to maintain according to claim 2, characterized in that: The outer side of the toothed disc (7) is provided with a plurality of mounting grooves (10) at equal intervals, and the interior of the mounting grooves (10) is provided with a toothed wheel (8) and a spring piece (9), and the toothed wheel (8) and the spring piece (9) are used in conjunction with each other.

4. The bicycle hub that is easy to maintain according to claim 1, characterized in that: The inner diameter of the pressure cover (15) is equal to the inner diameter of the ratchet ring (6).

5. The bicycle hub that is easy to maintain according to claim 1, characterized in that: The outer sides of both ends of the central shaft (3) are respectively provided with thread grooves, and the dust cover (2) is meshedly connected with the thread groove provided at one end of the central shaft (3).

6. The bicycle hub that is easy to maintain according to claim 1, characterized in that: One end of the central shaft (3) is connected to a fixing nut (4) through threaded engagement, and the fixing nut (4) is located on one side of the tower base body (5).

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