Bicycle hub ratchet wheel

Abstract

The utility model relates to the field of hub ratchet wheel devices, and discloses a bicycle hub ratchet wheel which comprises a main shaft, a sleeve is arranged in the middle of the side wall of the main shaft, a plurality of grooves are formed in one side of the inner side wall of the sleeve in a circumferential array mode, a bearing is rotationally connected to the middle of the side wall of the main shaft, and a fixing lantern ring is rotationally connected to one side of the side wall of the main shaft. A plurality of protruding blocks are arranged on the side wall of the fixing lantern ring in a circumferential array mode, and a threaded lantern ring is rotationally connected to the position, located on one side of the fixing lantern ring, of the side wall of the main shaft. According to the hub ratchet wheel, the threaded lantern ring and the fixed lantern ring are cast through titanium alloy, so that the hub ratchet wheel is more durable in the using process and can bear high-strength riding and complex road conditions, and the bicycle tower footing and the threaded lantern ring are installed through threaded connection; according to the bicycle hub ratchet wheel, the overall service life of the device is prolonged, and convenience can be effectively provided for follow-up maintenance and repair.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of flower drum ratchet device, especially to a bicycle flower drum ratchet. BACKGROUND

[0002] The bicycle flower drum ratchet is a key mechanical structure in the bicycle rear wheel hub, and its main function is to drive the wheel set through the meshing of the pawl and the ratchet, so as to realize the function of power transmission when pedaling and free sliding when coasting. The ratchet structure in the bicycle flower drum is usually composed of a pawl and a ratchet. The pawl is installed on the tower base, and the ratchet is fixed on the flower drum shell. When the rider pedals, the pawl will bite the ratchet tightly, so as to transmit the pedaling force to the wheel set and push the bicycle forward. When the rider stops pedaling, the pawl will release the ratchet, and the bicycle can rely on inertia to slide freely.

[0003] Although the prior art uses the flower drum ratchet to transmit the pedaling force to the wheel set and push the bicycle forward, the tower base and the flower drum are installed separately, which reduces the service life of the flower drum ratchet during use. Therefore, the technical personnel in the field provides a bicycle flower drum ratchet to solve the problems raised in the background art. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a bicycle flower drum ratchet. The threaded sleeve ring and the fixed sleeve ring are made of titanium alloy by casting, which makes the flower drum ratchet more durable during use and can withstand high-intensity cycling and complex road conditions. The bicycle tower base and the threaded sleeve ring are installed by threaded connection, which improves the service life of the device as a whole and provides a convenient bicycle flower drum ratchet for subsequent maintenance and repair.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a bicycle flower drum ratchet, comprising a main shaft, a sleeve is arranged in the middle of the side wall of the main shaft, a plurality of grooves are arranged in the circumferential array on one side of the inner side wall of the sleeve, a bearing is rotatably connected to the middle of the side wall of the main shaft, a fixed sleeve ring is rotatably connected to one side of the side wall of the main shaft, a plurality of protrusions are arranged in the circumferential array on the side wall of the fixed sleeve ring, a threaded sleeve ring is rotatably connected to one side of the side wall of the main shaft and located on one side of the fixed sleeve ring, a ratchet is fixedly connected to the other side of the threaded sleeve ring, and a bicycle tower base is arranged on one side of the side wall of the main shaft.

[0006] Through the above technical scheme, the bicycle tower base and the threaded sleeve ring are installed by threaded connection, which avoids damage to the device as a whole during use caused by split-type arrangement. The threaded connection between the bicycle tower base and the threaded sleeve ring improves the sealing performance of the device as a whole, improves the service life of the device as a whole, and effectively provides convenience for subsequent maintenance and repair.

[0007] Further, the threaded sleeve side wall is threadedly connected with the inner side wall of the bicycle tower;

[0008] Through the above technical scheme, the service life of the device as a whole is improved.

[0009] Further, the other side of the ratchet wheel is adapted to one side of the fixed sleeve;

[0010] Through the above technical scheme, the pedaling force is transmitted to the wheel set.

[0011] Further, the inner side wall of the groove is adapted to the side wall of the protrusion, and the protrusion is slidably connected with the inner side wall of the groove;

[0012] Through the above technical scheme, the bicycle is effectively driven forward.

[0013] Further, the bicycle tower is made of aluminum alloy material;

[0014] Through the above technical scheme, the structural strength is effectively improved while the weight is reduced.

[0015] Further, the threaded sleeve and the fixed sleeve are both made of titanium alloy material;

[0016] Through the above technical scheme, by casting the threaded sleeve and the fixed sleeve with titanium alloy, the titanium alloy has a lower density, so that the use of titanium alloy to manufacture the hub ratchet wheel can significantly reduce the weight, and the titanium alloy has very high strength, can withstand greater impact force and load, which makes the hub ratchet wheel more durable in use, can withstand high-strength riding and complex road conditions.

[0017] Further, the bearing is fixedly connected with the inner side wall of the sleeve;

[0018] Through the above technical scheme, the friction is reduced.

[0019] Further, the bicycle tower and the sleeve are both coaxially arranged with the main shaft;

[0020] Through the above technical scheme, the stability during movement is improved.

[0021] The utility model has the following beneficial effects:

[0022] 1、 in the utility model, by casting the threaded sleeve and the fixed sleeve with titanium alloy, the titanium alloy has a lower density, so that the use of titanium alloy to manufacture the hub ratchet wheel can significantly reduce the weight, and the titanium alloy has very high strength, can withstand greater impact force and load, which makes the hub ratchet wheel more durable in use, can withstand high-strength riding and complex road conditions.

[0023] 2、The utility model discloses a through the threaded connection between the bicycle tower foundation and threaded sleeve ring installation, avoid the integral damage of the device when using of the split type setting, through the threaded connection between the bicycle tower foundation and threaded sleeve ring, improve the sealing of the device integral, make the service life of the device integral improve, and can effectively provide the convenience for the subsequent maintenance and repair. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective view of a bicycle hub ratchet is provided for the utility model;

[0025] Figure 2 A sectional view of a bicycle hub ratchet is provided for the utility model;

[0026] Figure 3 An exploded perspective view of a bicycle hub ratchet is provided for the utility model;

[0027] Figure 4 A front view of a bicycle hub ratchet is provided for the utility model.

[0028] LEGEND:

[0029] 1, bicycle tower foundation, 2, sleeve, 3, main shaft, 4, threaded sleeve ring, 5, fixed sleeve ring, 6, recess, 7, bearing, 8, ratchet, 9, lug. DETAILED DESCRIPTION

[0030] 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. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] REFERENCE Figures 1-4The utility model provides an embodiment: a bicycle hub ratchet, including the main shaft 3, the sleeve 2 is arranged in the middle part of the lateral wall of main shaft 3, the lateral wall of sleeve 2 one side is circular array with a plurality of recess 6, the middle part of the lateral wall of main shaft 3 is rotatably connected with bearing 7, the lateral wall of main shaft 3 one side is rotatably connected with fixed collar 5, the lateral wall of fixed collar 5 is circular array with a plurality of protruding block 9, the lateral wall of main shaft 3 and the one side rotatably connected with threaded sleeve ring 4 of fixed collar 5, the other side of threaded sleeve ring 4 is fixedly connected with ratchet wheel 8, the lateral wall of main shaft 3 one side is provided with bicycle tower 1, by the casting of titanium alloy of threaded sleeve ring 4 and fixed collar 5, the density of titanium alloy is lower, therefore uses titanium alloy to manufacture hub ratchet can significantly reduce weight, and titanium alloy has very high strength, can bear greater impact force and load, this makes hub ratchet more durable in the use process, can bear high strength riding and complex road conditions.

[0032] The lateral wall of threaded sleeve ring 4 is connected with the lateral wall of bicycle tower 1 by screw thread, the other side of ratchet wheel 8 is matched with the one side of fixed collar 5, the lateral wall of a plurality of recess 6 is matched with the lateral wall of a plurality of protruding block 9, and a plurality of protruding block 9 are slidably connected with the lateral wall of a plurality of recess 6, the bicycle tower 1 adopts aluminium alloy material, threaded sleeve ring 4 and fixed collar 5 adopt titanium alloy material, bearing 7 is fixedly connected with the lateral wall of sleeve 2, the bicycle tower 1 and sleeve 2 are coaxially arranged with main shaft 3, by the installation of the threaded connection between bicycle tower 1 and threaded sleeve ring 4, avoid the damage of the whole device when using caused by split type setting, by the threaded connection between bicycle tower 1 and threaded sleeve ring 4, improve the sealing property of the whole device, make the service life of the whole device improve, and can effectively provide convenience for subsequent maintenance and repair.

[0033] Working principle: by the casting of titanium alloy of threaded sleeve ring 4 and fixed collar 5, the density of titanium alloy is lower, therefore uses titanium alloy to manufacture hub ratchet can significantly reduce weight, and titanium alloy has very high strength, can bear greater impact force and load, this makes hub ratchet more durable in the use process, can bear high strength riding and complex road conditions, by the installation of the threaded connection between bicycle tower 1 and threaded sleeve ring 4, avoid the damage of the whole device when using caused by split type setting, by the threaded connection between bicycle tower 1 and threaded sleeve ring 4, improve the sealing property of the whole device, make the service life of the whole device improve, and can effectively provide convenience for subsequent maintenance and repair.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A bicycle freewheel comprising a main shaft (3), characterized in that: The middle part of the side wall of the main shaft (3) is provided with a sleeve (2), the inner side wall of the sleeve (2) is provided with a plurality of grooves (6) in a circumferential array on one side, the middle part of the side wall of the main shaft (3) is rotatably connected with a bearing (7), the side wall of the main shaft (3) is rotatably connected with a fixed sleeve ring (5) on one side, the side wall of the fixed sleeve ring (5) is provided with a plurality of protrusions (9) in a circumferential array, the side wall of the main shaft (3) and located on one side of the fixed sleeve ring (5) is rotatably connected with a threaded sleeve ring (4), the other side of the threaded sleeve ring (4) is fixedly connected with a ratchet wheel (8), and the side wall of the main shaft (3) is provided with a bicycle tower base (1).

2. A freewheel for a bicycle hub as defined in claim 1, characterized in that: The side wall of the threaded sleeve ring (4) is threadedly connected with the inner side wall of the bicycle tower base (1).

3. A freewheel for a bicycle hub as defined in claim 1, characterized in that: The other side of the ratchet wheel (8) and one side of the fixed sleeve ring (5) are matched with each other.

4. A freewheel for a bicycle hub as defined in claim 1, characterized in that: The inner side wall of the plurality of grooves (6) and the side wall of the plurality of protrusions (9) are matched with each other, and the plurality of protrusions (9) and the inner side wall of the plurality of grooves (6) are slidably connected.

5. A freewheel for a bicycle hub as defined in claim 1, characterized in that: The bicycle tower base (1) is made of aluminum alloy material.

6. A freewheel for a bicycle hub as defined in claim 1, characterized in that: The threaded sleeve ring (4) and the fixed sleeve ring (5) are made of titanium alloy material.

7. A freewheel for a bicycle hub as defined in claim 1, characterized in that: The bearing (7) is fixedly connected with the inner side wall of the sleeve (2).

8. A freewheel for a bicycle hub as defined in claim 1, characterized in that: The bicycle tower base (1) and the sleeve (2) are coaxially arranged with the main shaft (3).

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