Chain-falling-preventing variable-speed cone pulley and electric vehicle

Abstract

The utility model relates to the technical field of variable-speed cone pulleys, in particular to a chain-falling-preventing variable-speed cone pulley and an electric vehicle, and the chain-falling-preventing variable-speed cone pulley comprises a variable-speed cone pulley, a supporting mechanism and a limiting mechanism, the speed change cone pulley is integrally composed of a plurality of stages of tooth pieces with the radiuses gradually changed, the speed change cone pulley is installed on the supporting mechanism, the supporting mechanism is connected with the inner sides of the tooth pieces, and the limiting mechanism is arranged on the outer side face of the tooth piece with the largest diameter. The chain-falling-preventing variable-speed cone pulley and the electric vehicle have a certain limiting function, so that the chain cannot be separated from the variable-speed cone pulley, and the safety performance in the riding process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of variable-speed cone pulleys, and particularly relates to an anti-chain-drop variable-speed cone pulley and an electric vehicle. Background Art

[0002] With the development of the times, electric vehicles have become more and more popular among people, and at the same time, the technology in the electric vehicle industry is also constantly innovating.

[0003] At present, the existing variable-speed cone pulleys are all in a toothed state. During the adjustment process, when adjusted to the maximum slice size, the chain is very likely to drop off between the cone pulley and the chain, posing a great potential safety hazard, which is particularly obvious in wide-tire vehicles. Summary of the Utility Model

[0004] (1) The utility model provides an anti-chain-drop variable-speed cone pulley and an electric vehicle, which alleviates the technical problem of the risk of chain dropping between the cone pulley and the chain in the prior art.

[0005] (2) Technical Solution

[0006] To solve the above technical problems, an embodiment of the utility model provides an anti-chain-drop variable-speed cone pulley, which includes a variable-speed cone pulley, a support mechanism, and a limit mechanism;

[0007] The variable-speed cone pulley is integrally composed of a plurality of stepped tooth slices with a gradually changing radius. The variable-speed cone pulley is installed on the support mechanism, the support mechanism is connected to the inner side of the tooth slice, and the limit mechanism is arranged on the outer side surface of the tooth slice with the largest diameter.

[0008] Further, the limit mechanism includes a limit piece, and the limit piece is arranged on the outer side surface of the tooth slice with the largest diameter.

[0009] Further, the limit piece is integrally in a disc shape, and the outer edge is in a toothless state.

[0010] Further, the support mechanism includes a support shaft and a support plate. The support plate is arranged at the end of the support shaft, and the support plate is connected to the inner side of the tooth slice.

[0011] Further, the circumferential direction of the support plate and the bottom of the tooth slice are connected by bonding.

[0012] Further, the circumferential direction of the support plate and the bottom of the tooth slice are connected by welding.

[0013] Further, the circumferential direction of the support plate and the bottom of the tooth slice are connected by rivets.

[0014] Further, the circumferential direction of the support plate and the bottom of the tooth slice are connected by interference fit.

[0015] Furthermore, a plurality of weight-reducing holes are also provided on the limiting piece.

[0016] The present utility model also provides an electric vehicle, including the above anti-chain-drop speed-changing tower pulley.

[0017] Advantages of the present utility model:

[0018] A kind of anti-chain-drop speed-changing tower pulley provided by the present utility model includes a speed-changing tower pulley, a supporting mechanism and a limiting mechanism. The speed-changing tower pulley is integrally composed of a plurality of stepped tooth pieces with gradually changing radii, so that the speed-changing tower pulley can be designed as an integral part composed of various tooth rings, ensuring its own stiffness and strength, so as to have a large load-bearing capacity. And by installing the speed-changing tower pulley on the supporting mechanism, its anti-torsion ability can be increased, and by connecting the supporting mechanism to the inner side of the tooth piece, it can be avoided that the speed-changing tower pulley falls off the supporting mechanism. A limiting mechanism is provided on the outer side surface of the tooth piece with the largest diameter, which plays a certain limiting function, so that the chain cannot escape from the speed-changing tower pulley, increasing the safety performance during riding. Description of the drawings

[0019] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a side view of the overall structure of an anti-chain-drop speed-changing tower pulley provided by an embodiment of the present utility model;

[0021] Figure 2 It is a top view of the overall structure of an anti-chain-drop speed-changing tower pulley provided by an embodiment of the present utility model.

[0022] Icon:

[0023] 100 - speed-changing tower pulley; 101 - tooth piece;

[0024] 200 - limiting piece;

[0025] 300 - support shaft; 301 - support plate. Specific embodiments

[0026] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" 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 an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0029] As Figures 1 to 2 shown, the present utility model provides an anti-drop chain variable speed sprocket, which includes a variable speed sprocket 100, a support mechanism, and a limiting mechanism; the variable speed sprocket 100 is integrally composed of a plurality of tooth pieces 101 with gradually changing radii. The variable speed sprocket 100 is installed on the support mechanism, the support mechanism is connected to the inner side of the tooth piece 101, and a limiting mechanism is provided on the outer side surface of the tooth piece 101 with the largest diameter.

[0030] In this embodiment, the anti-drop chain variable speed sprocket 100 includes a variable speed sprocket 100, a support mechanism, and a limiting mechanism. The variable speed sprocket 100 is integrally composed of a plurality of tooth pieces 101 with gradually changing radii, so that the variable speed sprocket 100 can be designed as an integral part composed of various tooth rings, ensuring its own stiffness and strength, and having a large load-bearing capacity. And by installing the variable speed sprocket 100 on the support mechanism, its anti-torsion ability can be increased. And by connecting the support mechanism to the inner side of the tooth piece 101, the variable speed sprocket 100 can be prevented from falling off the support mechanism. A limiting mechanism is provided on the outer side surface of the tooth piece 101 with the largest diameter, which plays a certain limiting function, so that the chain cannot escape from the variable speed sprocket 100, increasing the safety performance during riding.

[0031] According to an embodiment provided by the present utility model, as Figure 1 and Figure 2 shown, the limiting mechanism includes a limiting piece 200, and the limiting piece 200 is arranged on the outer side surface of the tooth piece 101 with the largest diameter.

[0032] In this embodiment, the limiting mechanism includes a limiting piece 200, and the limiting piece 200 is directly arranged on the outer side surface of the tooth piece 101 with the largest diameter. Since the speed change pulley 100 is integrally composed of a plurality of tooth pieces 101 with gradually changing radii, that is, the limiting piece 200 is arranged behind the tooth piece 101 with the largest diameter, it can play a certain limiting role, so that when the speed change pulley 100 changes speed during riding, the chain cannot be disengaged from the pulley, thereby increasing the safety during riding.

[0033] According to an embodiment provided by the present utility model, as Figure 1 and Figure 2 shown, the limiting piece 200 is integrally in a disc shape, and the outer edge is in a toothless state.

[0034] In this embodiment, preferably, the limiting piece 200 is integrally in a disc shape, so as to ensure that the overall shape of the limiting piece 200 is consistent with that of the speed change pulley 100, that is, the limiting piece 200 and the speed change pulley 100 can be regarded as a whole, and the outer edge of the limiting piece 200 is in a toothless state. When the chain changes to the tooth piece 101 with the largest diameter of the speed change pulley 100, the limiting piece 200 plays a limiting role, so that the chain cannot be disengaged from the speed change pulley 100, increasing the safety during riding.

[0035] Among them, optionally, the tooth piece 101 with the largest diameter of the speed change pulley 100 can also be set to be in a toothless state to replace the above-mentioned limiting piece 200, that is, when the chain changes to the tooth piece with the second largest diameter, the largest piece plays a limiting role, so that the chain cannot be disengaged from the speed change pulley 100, increasing the safety during riding.

[0036] According to an embodiment provided by the present utility model, as Figure 1 and Figure 2 shown, the supporting mechanism includes a supporting shaft 300 and a supporting plate 301. The end of the supporting shaft 300 is provided with the supporting plate 301, and the supporting plate 301 is connected to the inner side of the tooth piece 101.

[0037] In this embodiment, the support mechanism includes a support shaft 300 and a support plate 301. The variable speed pulley 100 is connected to the support shaft 300 through the support plate 301, which improves the torsional resistance. The periphery of the support plate 301 is connected to the bottom of the tooth piece 101 of the variable speed pulley 100 or is inscribed in the bottom of the tooth piece 101. The support plate 301 is fixedly connected to the bottom or the middle of the tooth piece 101 to increase the circumferential shear force bearing range, thereby preventing the support plate 301 from separating from the variable speed pulley 100 and ensuring the service life and safety.

[0038] According to an embodiment provided by the present invention, as Figure 1 and Figure 2 shown, the circumferential direction of the support plate 301 and the bottom of the tooth piece 101 are connected by bonding.

[0039] In this embodiment, the circumferential direction of the support plate 301 and the bottom of the tooth piece 101 are connected by bonding. Fixing by using the bonding method can ensure the use safety and increase the stability of the connection structure.

[0040] Among them, optionally, a high-strength resin adhesive can be selected for bonding.

[0041] According to an embodiment provided by the present invention, as Figure 1 and Figure 2 shown, the circumferential direction of the support plate 301 and the bottom of the tooth piece 101 are connected by welding.

[0042] In this embodiment, the circumferential direction of the support plate 301 and the bottom of the tooth piece 101 are fixed by welding. Fixing by using the welding method can ensure the use safety and increase the stability of the connection structure.

[0043] According to an embodiment provided by the present invention, as Figure 1 and Figure 2 shown, the circumferential direction of the support plate 301 and the bottom of the tooth piece 101 are connected by rivets.

[0044] In this embodiment, the circumferential direction of the support plate 301 and the bottom of the tooth piece 101 are fixed by riveting. Fixing by using the riveting method can ensure the use safety and increase the stability of the connection structure.

[0045] According to an embodiment provided by the present invention, as Figure 1 and Figure 2 shown, the circumferential direction of the support plate 301 and the bottom of the tooth piece 101 are connected by interference fit.

[0046] In this embodiment, the circumferential direction of the support plate 301 and the bottom of the tooth piece 101 can also be fixed by interference fit.

[0047] According to an embodiment provided by the present utility model, as Figure 1 and Figure 2 shown, a plurality of weight-reducing holes are further provided on the limiting piece 200.

[0048] In this embodiment, the requirements for lightweight of transportation tools are getting higher and higher. Therefore, a plurality of weight-reducing holes are further provided on the limiting piece 200. By setting the above-mentioned weight-reducing holes, a certain weight-reducing effect is achieved, and the lightweight effect of the anti-drop chain speed change tower wheel 100 provided by this embodiment is increased.

[0049] Among them, preferably, a plurality of weight-reducing holes arranged in an annular array are provided on the limiting piece 200. The weight-reducing holes are of a polygonal structure, and the weight-reducing holes can be a combination of multiple polygons. The entity between two adjacent weight-reducing holes is the main body of the limiting piece 200.

[0050] Optionally, the shape of the weight-reducing holes includes but is not limited to a polygonal structure. It can also be circular, square, diamond-shaped or other shapes, all of which can achieve the weight-reducing effect. The gist thereof does not deviate from the design concept of the present utility model and should fall within the protection scope of the present utility model.

[0051] The present utility model further provides an electric vehicle, including the above-mentioned anti-drop chain speed change tower wheel 100.

[0052] In this embodiment, the electric vehicle includes the above-mentioned anti-drop chain tower wheel. This anti-drop chain tower wheel ensures its own stiffness and strength, enables it to have a large load-bearing capacity while avoiding the speed change tower wheel 100 from falling off the support mechanism, preventing the chain from disengaging from the speed change tower wheel 100, increasing the safety performance during the riding process, and playing a certain role in protecting the personal safety and property safety of the rider during riding, and enhancing the riding experience.

[0053] Among them, optionally, the above-mentioned anti-drop chain speed change tower wheel 100 can not only be applied to electric vehicles, but also to bicycles, tricycles or other vehicles used during riding, all of which can achieve the effect of increasing the safety during the riding process. The gist thereof does not deviate from the design concept of the present utility model and should fall within the protection scope of the present utility model.

[0054] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A chain-drop-proof speed-changing stepper pulley, characterized in that: It comprises a speed-changing tower wheel (100), a supporting mechanism and a limiting mechanism; The speed change tower wheel (100) is composed of a plurality of gear pieces (101) with a gradually changing radius, the speed change tower wheel (100) is mounted on the support mechanism, the support mechanism is connected to the inner side of the gear piece (101), and the outer side surface of the gear piece (101) with the largest diameter is provided with the limiting mechanism; The limiting mechanism comprises a limiting plate (200), wherein the limiting plate (200) is arranged on the outer side surface of the tooth plate (101) having the largest diameter; The support mechanism comprises a support shaft (300) and a support plate (301); the support plate (301) is provided at the end of the support shaft (300); and the support plate (301) is connected to the inner side of the tooth plate (101).

2. The anti-chain-drop speed change step pulley according to claim 1, characterized in that: The limiting piece (200) is in the shape of a disk as a whole, and the outer edge is in a toothless state.

3. The anti-chain-drop speed change step pulley according to claim 1, characterized in that: The circumference of the support plate (301) is connected to the bottom of the tooth plate (101) by bonding.

4. The anti-chain-drop speed change step pulley according to claim 1, characterized in that: The circumference of the support plate (301) is connected to the bottom of the tooth plate (101) by welding.

5. The anti-chain-drop speed change step pulley according to claim 1, characterized in that: The circumference of the support plate (301) is connected to the bottom of the tooth plate (101) via rivets.

6. The anti-chain-drop speed change step pulley according to claim 1, characterized in that: The circumference of the support plate (301) is connected to the bottom of the tooth plate (101) through interference fit.

7. The anti-chain-drop speed change step pulley according to claim 1, characterized in that: The limiting plate (200) is also provided with a plurality of weight-reducing holes.

8. An electric vehicle, characterized in that: It comprises the chain-dropping prevention speed change tower wheel (100) as claimed in any one of claims 1 to 7.

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