Chain tightness adjusting structure

Abstract

A chain tightness adjusting structure comprises a bottom fork pipe, a plurality of set screws are arranged on the bottom fork pipe, the set screws are in threaded connection with the bottom fork pipe, chain adjusting blocks are arranged on the outer sides of the set screws, the chain adjusting blocks abut against the head ends of the set screws, and a plurality of through holes penetrating through the chain adjusting blocks are formed in the chain adjusting blocks. The positions of the through holes are matched with the positions of the set screws, a bottom fork shaft is connected to the chain adjusting block, a large flywheel is connected to the bottom fork shaft, and a chain is installed on the large flywheel. The chain adjusting device has the advantages that the tightness of the chain is adjusted by moving the chain adjusting block back and forth through the set screw, the tightness of the chain can be directly adjusted through the through hole of the chain adjusting block, the chain is more stable and reliable after being adjusted, positioning is more accurate, the adjusting process is simple, and the overall structure is concise; the chain adjusting cost can be reduced, the chain adjusting efficiency is high, the development cost and the management cost can be saved, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycles, in particular to a chain tension adjustment structure of an electric motorcycle. Background Art

[0002] Electric motorcycles mainly transmit power through chain transmission. After being used for a period of time, the chain of an electric motorcycle will be stretched to varying degrees and become loose. The loose chain will affect the transmission efficiency of the motorcycle and may also cause the chain to fall off. Therefore, the loosened chain must be adjusted to re-tighten it.

[0003] At present, conventional electric motorcycle chains need to be disassembled for adjustment. This method has the disadvantages of complex chain adjustment process, inaccurate positioning, poor adjustment accuracy and high adjustment cost. Utility Model Content

[0004] The utility model aims to solve the above-mentioned shortcomings of the prior art and provides a chain tension adjustment structure, which can directly adjust the chain tension, has simple adjustment, accurate positioning, high adjustment precision and low adjustment cost.

[0005] The utility model adopts a technical solution to solve the technical problem: a chain tension adjustment structure comprises a flat fork tube, a plurality of set screws are arranged on the flat fork tube, the set screws are threadedly connected with the flat fork tube, a chain adjustment block is arranged on the outer side of the set screw, the chain adjustment block abuts against the head end of the set screw, a plurality of through holes penetrating the chain adjustment block are arranged on the chain adjustment block, the positions of the through holes match the positions of the set screws, the chain adjustment block is connected with a flat fork shaft, the flat fork shaft is connected with a large flywheel, and a chain is installed on the large flywheel.

[0006] The number of through holes is the same as the number of set screws.

[0007] The number of through holes is two, and the two through holes are arranged on the chain adjusting block in a vertically symmetrical state, and the number of fastening screws is two.

[0008] A flat fork tube chain adjusting block is arranged on the flat fork tube, a slide groove is arranged on the flat fork tube chain adjusting block, and the chain adjusting block is arranged in the slide groove.

[0009] The set screw is a hexagon socket set screw.

[0010] The beneficial effects of the utility model are as follows: the chain tension adjustment structure of the utility model has a reasonable structure, and the chain tension is adjusted by moving the chain adjusting block forward and backward with a set screw, and the chain tension can be directly adjusted through the through hole of the chain adjusting block. After adjustment, the chain is more stable and reliable, and the positioning is more precise. The adjustment process is simple, and the overall structure is concise, which solves the problem of complex chain adjustment in the past, can reduce the cost of chain adjustment, and has high chain adjustment efficiency, which can save development cost and management cost, can improve production efficiency, has good use effect, and is conducive to promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0012] Explanation of the reference numerals: flat fork tube 1, set screw 2, chain adjusting block 3, through hole 4, flat fork shaft 5, large flywheel 6, chain 7, flat fork tube chain adjusting block 8, slide groove 9. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings:

[0014] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0016] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0018] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the patent application specification and claims of the utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate the existence of at least one.

[0019] Referring to the accompanying drawings: This chain tension adjustment structure includes a flat fork tube 1, on which a plurality of set screws 2 are arranged, and the set screws 2 are threadedly connected to the flat fork tube 1. The threaded connection enables the set screws 2 to move forward and backward on the flat fork tube 1, so as to realize the adjustment function. A chain adjustment block 3 is arranged on the outer side of the set screw 2, and the chain adjustment block 3 abuts against the head end of the set screw 2. In this way, when the set screw 2 moves forward and backward, the chain adjustment block 3 can be driven to move forward and backward, thereby adjusting the chain. The chain adjustment block 3 is provided with a plurality of through holes 4 that penetrate the chain adjustment block 3, and the position of the through hole 4 matches the position of the set screw 2. In this way, a tool can be passed through the through hole to adjust the chain. The set screw 2 is operated, and an Allen wrench can be used as a tool for operating the set screw 2. The chain adjusting block 3 is connected to a flat fork shaft 5, and a large flywheel 6 is connected to the flat fork shaft 5. The large flywheel 6 is installed with a chain 7. In this arrangement, when the chain adjusting block 3 moves back and forth, the flat fork shaft 5, the large flywheel 6, and the chain 7 can be driven to move, so that the chain 7 can be directly adjusted for tightness. After adjustment, the chain is more stable and reliable, and the positioning is more precise. The adjustment process is simple, and the overall structure is concise, which solves the problem of complex chain adjustment in the past, can reduce the cost of chain adjustment, and has high chain adjustment efficiency, which can save development cost and management cost, can improve production efficiency, has good use effect, and is conducive to promotion.

[0020] The number of through holes 4 is the same as the number of set screws 2. This arrangement allows the number of through holes 4 to match the number of set screws 2, ensuring stability of operation during adjustment.

[0021] There are two through holes 4, which are symmetrically arranged on the chain adjusting block 3, and two set screws 2. In this way, the two through holes 4 are symmetrically arranged on the chain adjusting block 3, and the left and right chain adjusting blocks 3 are interchangeable, which can save development and management costs and improve production efficiency.

[0022] The flat fork tube 1 is provided with a flat fork tube chain adjustment block 8, the flat fork tube chain adjustment block 8 is provided with a slide groove 9, and the chain adjustment block 3 is arranged in the slide groove 9. In this way, the structure of the slide groove 9 can limit the chain adjustment block 3 in the up and down directions, ensure that the chain adjustment block 3 works in a normal stroke, ensure the normal operation of the chain adjustment block 3, and ensure the normal tension adjustment of the chain 7.

[0023] The set screw 2 is a hexagon socket set screw. This arrangement makes it easy to operate by using the hexagon socket set screw, making the adjustment operation more convenient.

[0024] During operation, when the chain 7 needs to be adjusted, a tool, an Allen wrench, is used to pass through the through hole 4 and connect to the head end of the set screw 2. Then, the Allen wrench is rotated forwards and backwards according to the chain tightness requirement to move the set screw 2 forwards and backwards. The forward and backward movement of the set screw 2 drives the chain adjustment block 3 to move forward and backward, and then drives the flat fork shaft 5 and the large flywheel 6 to move forward and backward to adjust the tightness of the chain 7.

[0025] The characteristics of the embodiments of the utility model are: the chain tightness is adjusted by moving the chain adjusting block forward and backward with a set screw, the chain tightness can be directly adjusted through the through hole of the chain adjusting block, the chain is more stable and reliable, the positioning is more precise after adjustment, the adjustment process is simple, the overall structure is concise, the problem of complex chain adjustment in the past is solved, the cost of chain adjustment can be reduced, the chain adjustment efficiency is high, the development cost and management cost can be saved, the production efficiency can be improved, the use effect is good, and it is conducive to promotion.

[0026] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A chain tension adjustment structure, characterized in that: The invention comprises a flat fork tube (1), a plurality of set screws (2) are arranged on the flat fork tube (1), the set screws (2) are threadedly connected to the flat fork tube (1), a chain adjustment block (3) is arranged on the outer side of the set screw (2), the chain adjustment block (3) abuts against the head end of the set screw (2), a plurality of through holes (4) penetrating the chain adjustment block (3) are arranged on the chain adjustment block (3), the position of the through hole (4) matches the position of the set screw (2), a flat fork shaft (5) is connected to the chain adjustment block (3), a large flywheel (6) is connected to the flat fork shaft (5), and a chain (7) is installed on the large flywheel (6).

2. The chain tension adjustment structure according to claim 1, characterized in that: The number of the through holes (4) is the same as the number of the set screws (2).

3. The chain tension adjustment structure according to claim 1, characterized in that: The number of the through holes (4) is two, and the two through holes (4) are arranged on the chain adjustment block (3) in an up-down symmetrical state, and the number of the set screws (2) is two.

4. The chain tension adjustment structure according to claim 1, characterized in that: The flat fork tube (1) is provided with a flat fork tube chain adjustment block (8), the flat fork tube chain adjustment block (8) is provided with a slide groove (9), and the chain adjustment block (3) is arranged in the slide groove (9).

5. The chain tension adjustment structure according to claim 1, characterized in that: The set screw (2) is a hexagon socket set screw.

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