Chain adjuster for chain anti-loose

Abstract

The utility model discloses a chain adjuster for chain anti -loosening relates to chain field, solved the problem that current device is difficult to carry out corresponding degree adjustment according to chain group tightness demand, adopted the following scheme: including the frame on the car body, the rear end inboard of car frame is provided with frame bar, be provided with rear drive tooth group on the frame bar, the main part of rear drive tooth group is rear drive tooth disc, the meshing of rear drive tooth group has chain group, and still meshing has the auxiliary tooth group of being located below the frame on chain group, this chain adjuster for chain anti -loosening, through the setting of auxiliary tooth group and auxiliary frame, can utilize the different spring ring of spring ring specification and the tightness of chain group and adjust the height of auxiliary tooth group, guarantee the tightness of chain group, secondly, the setting of front arc card and rear arc shell on rear drive tooth group and the middle side arc card of auxiliary tooth group, can avoid the situation of chain group derailment and fall, and simple operation simultaneously, need not manual regulation.

Description

Technical Field

[0001] This utility model relates to the field of chain technology, specifically to a chain adjuster for preventing chain loosening. Background Technology

[0002] A bicycle is a very popular means of transportation and sports equipment. It consists of two main parts: a frame (body) and two wheels. Bicycles are usually driven by pedals, which are connected to a chain drive system that transmits power to the rear wheel, propelling the bicycle forward. A search revealed a chain adjuster for preventing chain loosening in patent application number 202422573649.4. The adjuster includes a locking ring and an end fixing block. An adjustment mechanism is fixedly installed on one side of the locking ring, and the end fixing block is fixedly installed on one side of the adjustment mechanism. A snap-fit ​​groove is provided on one side of the end fixing block. A vertical adjustment mounting mechanism is fixedly installed on the adjustment mechanism, and a chain tensioning mechanism is fixedly installed on one side of the mounting mechanism. This invention allows the locking ring to be installed on the rear wheel axle of a bicycle. The distance between the locking ring and the end fixing block is then adjusted using the adjustment mechanism, allowing the end fixing block and snap-fit ​​groove to contact and fix with one end of the frame. This prevents the chain from loosening due to rear wheel displacement during prolonged use. The mounting mechanism ensures that the chain tensioning mechanism fits snugly against the chain, thus supporting and tensioning the chain. The aforementioned application document uses a tensioning mechanism to support and tension the chain, but the overall structure is complex. The entire mechanism is mounted on the bicycle frame, which may increase the overall weight of the frame, affecting riding performance and subsequent adjustments. Furthermore, it requires manual adjustment and cannot be automatically adjusted while riding, making it less practical.

[0003] Therefore, we propose a chain adjuster for preventing chain loosening. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a chain adjuster for preventing chain loosening, which solves the problem that existing devices are unable to adjust the chain tension to the required degree according to the chain assembly tension.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a chain adjuster for preventing chain loosening, comprising a frame located on the vehicle body, a frame rod provided on the inner rear end of the frame, a rear drive gear assembly provided on the frame rod, the main body of the rear drive gear assembly being a rear drive sprocket, a chain assembly meshing on the rear drive gear assembly, and an auxiliary gear assembly located below the frame meshing on the chain assembly; The main body of the auxiliary gear assembly is an auxiliary gear disc. The auxiliary gear assembly is mounted on the frame rod via an auxiliary frame, and a spring rib is hooked between the auxiliary gear assembly and the frame.

[0006] As a preferred embodiment of this utility model, a bicycle rear wheel is fixedly fitted on the outer wall of the frame pole, and a rear drive gear set is also fixedly fitted on the outer wall of the frame pole. The frame poles are designed to rotate the bicycle wheels inside, ensuring proper bicycle movement.

[0007] As a preferred embodiment of this utility model, a rear arc shell in the shape of an outwardly flared ring is fixedly installed on the front and rear side ring walls of the rear drive gear assembly, and a front arc clip in the shape of a side semi-circular L-shaped clip is fixedly installed on the outer side of the rear side ring wall. The front arc clamp and rear arc shell can assist in limiting the meshing chain from the front and rear sides, preventing the chain from shifting and falling off on both sides of the rear drive sprocket.

[0008] As a preferred embodiment of this utility model, the front and rear sidewalls of the auxiliary gear group are provided with side arc clips, the side arc clips are outwardly expanding ring clips, and the outer edge of the side arc clips is located one centimeter outside the outer edge of the auxiliary gear disc; The auxiliary gear plate's front and rear side arc-shaped locking mechanism can provide bidirectional auxiliary restraint on the chain wheel from the front and rear, preventing the chain wheel from shifting outwards and falling off.

[0009] As a preferred embodiment of this utility model, the frame is an angled frame, the bottom side of the frame is provided with an upper hook hole, the middle part of the auxiliary frame is provided with a lower hook hole, and the top and bottom ends of the spring rib are provided with hooks, and the spring rib is hooked onto the upper hook hole and the lower hook hole respectively by the two sets of hooks. The spring ribs allow for adjustment of the height of the auxiliary frame and its bottom auxiliary tooth assembly according to the degree of chain looseness, simultaneously adjusting the tension of the chain assembly and increasing transmission stability.

[0010] As a preferred embodiment of this utility model, the auxiliary frame is provided with a shaft groove at its end, and the auxiliary frame is rotatably mounted on the end of the frame rod through the shaft groove, and the outer end of the frame rod is pressed onto the outside of the shaft groove by a nut; The nut pressing method can press and limit the auxiliary frame from the end, ensuring the installation effect.

[0011] This utility model provides a chain adjuster for preventing chain loosening. It has the following beneficial effects: This chain adjuster for preventing chain loosening, through the setting of auxiliary tooth assembly and auxiliary frame, can adjust the height of the auxiliary tooth assembly by utilizing different spring coil specifications and the tightness of the chain assembly, thus ensuring the tightness of the chain assembly. Secondly, the setting of the front arc lock and rear arc shell on the rear drive tooth assembly and the side arc lock in the auxiliary tooth assembly can prevent the chain assembly from derailing and falling off. At the same time, it is simple to operate and does not require manual adjustment, solving the problem that existing devices are difficult to adjust to the required degree of chain tightness. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a schematic diagram of the rear drive gear assembly of this utility model; Figure 4 This is a schematic diagram of the auxiliary gear assembly of this utility model.

[0013] In the diagram: 1. Frame; 2. Frame rod; 3. Rear drive gear assembly; 31. Rear drive gear sprocket; 32. Front arc clamp; 33. Rear arc shell; 4. Auxiliary gear assembly; 41. Auxiliary gear sprocket; 42. Side arc clamp; 5. Auxiliary frame; 6. Spring rib; 7. Upper hook hole; 8. Lower hook hole; 9. Shaft groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: a chain adjuster for preventing chain loosening, including a frame 1 located on the vehicle body, a frame rod 2 provided on the inner rear end of the frame 1, a rear drive gear assembly 3 provided on the frame rod 2, the main body of the rear drive gear assembly 3 being a rear drive gear disc 31, a chain assembly meshing on the rear drive gear assembly 3, and an auxiliary gear assembly 4 located below the frame 1 meshing on the chain assembly; the main body of the auxiliary gear assembly 4 being an auxiliary gear disc 41, the auxiliary gear assembly 4 being mounted on the frame rod 2 via an auxiliary frame 5, and a spring rib 6 hooked between the auxiliary gear assembly 4 and the frame 1; Among them, the chain adjuster for preventing chain loosening, through the setting of auxiliary tooth group 4 and auxiliary frame 5, can adjust the height of auxiliary tooth group 4 by using different specifications of spring rib ring 6 and the tightness of chain group, so as to ensure the tightness of chain group. Secondly, the setting of front arc clip 32 and rear arc shell 33 on rear drive tooth group 3 and side arc clip 42 in auxiliary tooth group 4 can prevent the chain group from derailing and falling off. At the same time, it is simple to operate and does not require manual adjustment, thus solving the problem that existing devices are difficult to adjust to the appropriate degree according to the tightness requirements of chain group.

[0016] The bicycle rear wheel is fixedly mounted on the outer wall of the frame pole 2, and the rear drive gear set 3 is also fixedly mounted on the outer wall of the frame pole 2; the frame pole 2 is designed to drive the bicycle wheel inside to rotate, ensuring the bicycle's movement.

[0017] The rear drive gear assembly 3 has an outwardly flared rear arc shell 33 fixedly installed on the front and rear side ring walls, and a front arc clip 32 with a side semi-circular L-shaped clip fixedly installed on the outer side of the rear side ring wall; the front arc clip 32 and the rear arc shell 33 can assist in limiting the meshed chain from the front and rear sides, preventing the chain from being displaced on both sides of the rear drive gear 31 and falling off.

[0018] Side arc clips 42 are provided on the front and rear side walls of the auxiliary gear group 4. The side arc clips 42 are outwardly flared ring clips, and the outer edge of the side arc clips 42 is located one centimeter outside the outer edge of the auxiliary gear disc 41. The side arc clips 42 on the front and rear sides of the auxiliary gear disc 41 can provide bidirectional auxiliary limiting for the chain wheel from the front and rear, preventing the chain wheel from shifting outward and falling off.

[0019] The frame 1 is an angled frame. The bottom side of the frame 1 has an upper hook hole 7, and the middle of the auxiliary frame 5 has a lower hook hole 8. The top and bottom ends of the spring rib 6 are equipped with hooks, and the spring rib 6 is hooked onto the upper hook hole 7 and the lower hook hole 8 respectively through the two sets of hooks. The spring rib 6 can adjust the height of the auxiliary frame 5 and its bottom auxiliary tooth group 4 according to the looseness of the chain, and simultaneously adjust the tension of the chain group to increase the transmission stability.

[0020] The auxiliary frame 5 has a shaft groove 9 at its end. The auxiliary frame 5 is rotatably mounted on the end of the support rod 2 through the shaft groove 9, and the outer end of the support rod 2 is pressed onto the outside of the shaft groove 9 by a nut. The nut pressing method can press and limit the auxiliary frame 5 from the end, ensuring the installation effect.

[0021] The working principle and usage process of this utility model are as follows: When the device is required to work, the components are pre-assembled on the frame rod 2, and then the chain assembly is meshed and assembled on the rear drive tooth assembly 3 and the auxiliary tooth assembly 4. The spring rib 6 is used to hook and attach it. When the chain assembly is loose, the spring rib 6 will stretch outward to a certain extent according to the degree of looseness, so as to ensure that the chain is always taut and reduce the probability of falling off.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A chain adjuster for preventing chain loosening, characterized in that: The vehicle includes a frame (1) located on the vehicle body. A frame rod (2) is provided on the inner rear end of the frame (1). A rear drive gear assembly (3) is provided on the frame rod (2). The main body of the rear drive gear assembly (3) is a rear drive gear disc (31). A chain assembly is meshed on the rear drive gear assembly (3), and an auxiliary gear assembly (4) located below the frame (1) is also meshed on the chain assembly. The main body of the auxiliary gear assembly (4) is the auxiliary gear disc (41). The auxiliary gear assembly (4) is mounted on the frame rod (2) through the auxiliary frame (5), and a spring rib (6) is hooked between the auxiliary gear assembly (4) and the frame (1).

2. A chain adjuster for preventing chain loosening according to claim 1, characterized in that: The outer wall of the frame (2) is fixedly fitted with a bicycle rear wheel, and the outer wall of the frame (2) is also fixedly fitted with a rear drive gear set (3).

3. A chain adjuster for preventing chain loosening according to claim 1, characterized in that: The rear drive gear assembly (3) has a rear arc shell (33) in the shape of an outwardly flared ring fixedly installed on the front and rear side ring walls, and a front arc clip (32) in the shape of a side semi-circular L-shaped clip fixedly installed on the outer side of the rear side ring wall.

4. A chain adjuster for preventing chain loosening according to claim 1, characterized in that: The auxiliary gear group (4) is provided with a side arc clip (42) on the front and rear side walls. The side arc clip (42) is an outwardly expanding ring clip, and the outer edge of the side arc clip (42) is located one centimeter outside the outer edge of the auxiliary gear disc (41).

5. A chain adjuster for preventing chain loosening according to claim 1, characterized in that: The frame (1) is an angled frame. The bottom side of the frame (1) is provided with an upper hook hole (7). The middle part of the auxiliary frame (5) is provided with a lower hook hole (8). The top and bottom ends of the spring rib (6) are provided with hooks, and the spring rib (6) is hooked onto the upper hook hole (7) and the lower hook hole (8) respectively by the two sets of hooks.

6. A chain adjuster for preventing chain loosening according to claim 1, characterized in that: The auxiliary frame (5) is provided with a shaft groove (9) at its end. The auxiliary frame (5) is rotatably mounted on the end of the frame rod (2) through the shaft groove (9), and the outer end of the frame rod (2) is pressed onto the outside of the shaft groove (9) by a nut.

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