Chain structure, bicycles and electric vehicles

Abstract

This utility model provides a chain structure, bicycle, and electric vehicle, comprising: multiple sequentially connected single-link chains; each single-link chain includes: a connecting piece, a bushing, and a roller; the bushing is fitted with a connecting piece and a roller around its periphery, and each roller has a connecting piece at both ends; one end of the connecting piece on both sides where the roller is mounted is the roller end of the single-link chain, and the open end of the connecting piece on both sides is the open end of the single-link chain, the open end of the single-link chain rotatably connecting to the roller end of the next single-link chain, and the connecting pieces on both sides of the open end are located outside the connecting pieces on both sides of the roller end of the next single-link chain. The chain of this application does not require the configuration of two paired single-link chains; the single-link chains have the same structure, and when the chain tension needs to be adjusted, only one link needs to be adjusted, making the tension adjustment more precise.

Description

Technical Field

[0001] This utility model relates to the field of chain structures, specifically to chain structures, bicycles, and electric vehicles. Background Technology

[0002] Chains are generally metal links or rings, and are mostly used for mechanical transmission and traction.

[0003] The chain structures currently in use are relatively complex. A basic chain unit consists of a single chain link, two outer plates, a pin, a connector shaft, a connector plate, and a spring plate. For ring connections, two connector shafts, two connector plates, and a spring plate are required, making the structure relatively complex. For example, the chain proposed in publication number CN109798326A requires two connector shafts and two connector plates for ring connections, resulting in a complex structure.

[0004] When it is necessary to adjust the length of the chain, at least 2N single chain links, outer plates, pins, connector plates, etc. need to be added or removed. N is a natural number. The number of parts that need to be adjusted is large, which also leads to a large change in the chain length when added or removed, making it difficult to achieve small chain length adjustments. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a chain structure, a bicycle, and an electric vehicle.

[0006] The chain structure provided by this utility model includes: a plurality of single-link chains connected in sequence;

[0007] The single-link chain includes: a connecting piece, a bushing, and a roller;

[0008] The bushing is fitted with connecting pieces and rollers around its periphery, and each end of the roller is provided with a connecting piece;

[0009] The connecting plates on both sides have rollers mounted at one end, which is the roller end of a single-link chain. The connecting plates on both sides have openings at one end, which is the open end of a single-link chain. The open end of the single-link chain is rotatably connected to the roller end of the next single-link chain, and the connecting plates on both sides of the open end are located outside the connecting plates on both sides of the roller end of the next single-link chain.

[0010] Preferably, the open end of the single-link chain is riveted to the roller end of the next single-link chain via a pin.

[0011] Preferably, the pin passes through the bushing and rivets both ends to the connecting pieces on both sides of the opening end of the previous single-link chain.

[0012] Preferably, the connecting piece is configured in a Z-shape.

[0013] Preferably, the beginning and end of the chain structure formed by connecting multiple single-link chains are connected by a connector shaft to form a ring, and the connector shaft passes through the bushing at the beginning of the chain structure and the connecting pieces on both sides of the end.

[0014] Preferably, one end of the connector shaft is provided with a radially protruding limiting edge, and the other end is provided with an annular groove for engaging the opening retaining ring.

[0015] Preferably, the two ends of the bushing are riveted to the connecting pieces on both sides to achieve axial positioning.

[0016] Preferably, the distance between the inner walls of the connecting pieces on both sides of the open end of the single-link chain is greater than or equal to the distance between the outer walls of the connecting pieces on both sides of the roller end.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this application, the connecting plate has a roller end that is the roller end of a single-link chain, and the connecting plates on both sides form an opening that is the open end of a single-link chain. The open end of the single-link chain is rotatably connected to the roller end of the next single-link chain, and the connecting plates on both sides of the open end are located outside the connecting plates on both sides of the roller end of the next single-link chain. This eliminates the need for the chain to be configured with two single-link chains in pairs. The single-link chains have the same structure, and when the chain tension needs to be adjusted, only one link needs to be adjusted at least, making the tension adjustment more precise.

[0019] 2. This application is applicable to all specifications of chains. At the same time, the chain with this application has fewer components, higher versatility, and simpler and faster connection, which can more easily achieve automated mass production. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a top view of the chain structure;

[0022] Figure 2 This is the front view of the chain structure;

[0023] Figure 3 This is a top view of the chain structure in practical applications;

[0024] Figure 4 This is the front view of the chain structure in a practical application.

[0025] Figure 5 A 3D diagram of a single-link chain;

[0026] Figure 6 This is a cross-sectional view of a single chain link;

[0027] Figure 7 This is a schematic diagram of an open retaining ring structure;

[0028] Figure 8 This is a schematic diagram of the connector shaft structure;

[0029] As shown in the figure:

[0030] Detailed Implementation

[0031] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0032] like Figure 1-4 As shown, the chain structure provided in this embodiment can use any number of links, both even and odd. The length can be increased or decreased by adjusting a single chain link. It includes six components: pin 1, connecting piece 2, bushing 3, roller 4, open retaining ring 5, and connector shaft 6. The connecting piece 2 and roller 4 are connected by bushing 3 to form the basic unit of the chain, a single chain link. Bushing 3 passes through the first connecting piece 2, roller 4, and second connecting piece 2 in sequence, and the two ends of bushing 3 are riveted to form a single chain link. Multiple single chain links are connected end to end by pin 1 to form a chain structure of any length. When connecting single chain links, the roller end of the single chain link is connected to the open end of the previous single chain link, and then the connection is completed by inserting pin 1 and riveting.

[0033] The individual chain links are connected end to end to form a complete chain structure. The beginning and end of the complete chain structure are then connected by inserting a connector shaft 6. The open retaining ring 5 is inserted into the annular groove at one end of the connector shaft 6 to complete the annular connection of the entire chain.

[0034] More specifically, such as Figure 5-6 As shown, a single-link chain includes: a connecting piece 2, a bushing 3, and rollers 4; the bushing 3 is fitted with connecting pieces 2 and rollers 4 around its periphery, and each end of the roller 4 is provided with a connecting piece 2. The two ends of the bushing 3 are riveted to the connecting pieces 2 on both sides to achieve axial positioning. The end of the connecting piece 2 on both sides where the roller 4 is mounted is the roller end of the single-link chain, and the end of the connecting piece 2 on both sides that forms an opening is the open end of the single-link chain. The open end of the single-link chain is rotatably connected to the roller end of the next single-link chain, and the connecting pieces 2 on both sides of the open end are located outside the connecting pieces 2 on both sides of the roller end of the next single-link chain.

[0035] Combination Figure 7-8As shown, the open end of a single chain link is riveted to the roller end of the next single chain link via a pin 1. The pin 1 passes through the bushing 3 and rivets both ends to the connecting pieces 2 on both sides of the open end of the previous single chain link. The beginning and end of the chain structure formed by connecting multiple single chain links are connected by a connector shaft 6 to form a ring. The connector shaft 6 passes through the bushing 3 at the beginning end of the chain structure and the connecting pieces 2 on both sides of the end end. One end of the connector shaft 6 is provided with a radially protruding limiting edge, and the other end is provided with an annular groove for engaging the open retaining ring 5.

[0036] In a preferred embodiment, the connecting piece 2 is configured in a Z-shape.

[0037] In a preferred embodiment, the distance between the inner walls of the connecting pieces 2 on both sides of the open end of the single chain is greater than or equal to the distance between the outer walls of the connecting pieces 2 on both sides of the roller end.

[0038] Working principle:

[0039] Because the connecting piece 2 in this embodiment is Z-shaped, the opening width of the open end is greater than the thickness of the roller end, allowing the open end of the previous single-link chain to fit over the outside of the roller end of the next single-link chain, eliminating the need for an outer piece or paired loops. When length adjustment is required, only one single-link chain needs to be added or removed. In contrast, existing solutions, when adjusting length, can only remove links in pairs, thus limiting the adjustment space compared to the single-link removal method of this embodiment.

[0040] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A chain structure, characterized in that, include: Multiple single-link chains connected in sequence; The single-link chain includes: a connecting piece (2), a bushing (3), and a roller (4); The bushing (3) is fitted with connecting pieces (2) and rollers (4) around its periphery, and connecting pieces (2) are provided at both ends of the rollers (4); The connecting pieces (2) on both sides are mounted with rollers (4) at one end, which is the roller end of a single-link chain. The connecting pieces (2) on both sides form an opening at one end, which is the open end of a single-link chain. The open end of the single-link chain is rotatably connected to the roller end of the next single-link chain, and the connecting pieces (2) on both sides of the open end are located outside the connecting pieces (2) on both sides of the roller end of the next single-link chain.

2. The chain structure according to claim 1, characterized in that: The open end of the single-link chain is riveted to the roller end of the next single-link chain by a pin (1).

3. The chain structure according to claim 2, characterized in that: The pin (1) passes through the bushing (3) and rivets both ends to the connecting pieces (2) on both sides of the opening end of the previous single-link chain.

4. The chain structure according to claim 1, characterized in that: The connecting piece (2) is configured in a Z-shape.

5. The chain structure according to claim 1, characterized in that: The beginning and end of a chain structure formed by connecting multiple single-link chains are connected by a connector shaft (6) to form a ring. The connector shaft (6) passes through the bushing (3) at the beginning of the chain structure and the connecting pieces (2) on both sides of the end.

6. The chain structure according to claim 5, characterized in that: One end of the connector shaft (6) is provided with a radially protruding limiting edge, and the other end is provided with an annular groove for engaging the opening retaining ring (5).

7. The chain structure according to claim 1, characterized in that: The two ends of the bushing (3) are riveted to the connecting pieces (2) on both sides to achieve axial positioning.

8. The chain structure according to claim 1, characterized in that: The distance between the inner walls of the connecting pieces (2) on both sides of the open end of the single-section chain is greater than or equal to the distance between the outer walls of the connecting pieces (2) on both sides of the roller end.

9. A bicycle, characterized in that: The chain structure described in any one of claims 1-8 is adopted.

10. An electric vehicle, characterized in that: The chain structure described in any one of claims 1-8 is adopted.

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