A sprocket guard plate

Abstract

This utility model discloses a sprocket guard plate, including a guard plate frame, a sprocket disc, and a movable guard plate. One end of the guard plate frame is connected to a protective sleeve, which is an arc-shaped groove covering the outer circumference of the sprocket disc. The movable guard plate is flexibly arranged and coaxially with the sprocket disc, rotating synchronously with it. A motor base is provided on the surface of the sleeve, and a generator is installed inside the motor base. The generator shaft is connected to a transmission roller. A toothed disc is provided on the surface of the sprocket disc, and multiple helical teeth are provided on the surface of the transmission roller. The helical teeth mesh with the helical teeth of the toothed disc for transmission. This structure provides dynamic and static protection to the sprocket surface and circumference during vehicle operation, effectively preventing foreign objects from being drawn in and cutting them through the helical teeth and toothed disc structure, thus improving system stability. Simultaneously, the meshing of the toothed disc with the transmission roller drives the generator to generate electricity, achieving kinetic energy recovery and improving vehicle energy efficiency. This structure has advantages such as strong protection, high cutting efficiency, and excellent energy feedback capability.

Description

Technical Field

[0001] This utility model relates to the field of sprocket transmission technology, specifically a sprocket guard plate. Background Technology

[0002] In the transmission systems of traditional motorcycles or electric vehicles, the sprocket structure is typically exposed and mounted on the rear drive wheel or the end of the central drive shaft. Such sprocket systems are in an open state for extended periods, making them highly susceptible to interference from road debris (such as gravel, branches, and plastic film) during operation. If this debris gets caught in the sprocket system, it can easily cause chain jamming, gear engagement failure, or even chain detachment, posing a significant safety hazard. Furthermore, due to the high-speed rotation of the sprocket and the lack of effective dynamic protection devices around it, the chain and sprocket are exposed to the external environment for extended periods, leading to accelerated wear and a shortened lifespan.

[0003] To address these issues, some vehicles have attempted to partially shield the sprockets with metal covers or plastic baffles. However, these structures are mostly static enclosures, which are ill-suited to the dynamic protection requirements arising from the rotation of the sprocket disc. Problems such as exposed sprocket edges, foreign objects entering blind spots, and the inability to actively remove debris persist during vehicle operation.

[0004] On the other hand, current sprocket systems only function as mechanical transmission components during vehicle operation, failing to fully utilize their rotational inertia for energy recovery. Especially during prolonged high-speed driving or braking deceleration, the kinetic energy carried by the sprocket itself is not effectively utilized, resulting in wasted system energy. While some electric vehicle platforms have introduced wheel-side motor regenerative braking systems, these are complex in structure and costly, making them unsuitable for traditional mechanical chain drive platforms.

[0005] Therefore, existing sprocket protection structures and energy recovery mechanisms still have significant shortcomings, and there is an urgent need for an integrated structure with dynamic sprocket protection, automatic foreign object cutting, and sprocket kinetic energy recovery functions to improve the reliability, safety, and overall energy efficiency of the transmission system. This utility model is a technical improvement solution proposed based on this background. Utility Model Content

[0006] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0007] Therefore, the technical solution adopted by this utility model is: a sprocket guard plate, which aims to realize the functions of dynamic protection of the sprocket, automatic shearing of foreign objects and recovery of power generation energy through integrated structural design, thereby improving the operational stability and overall efficiency of the sprocket system.

[0008] The sprocket guard plate includes: a guard plate frame, a sprocket disc, and a movable guard plate. One end of the guard plate frame is connected to a protective sleeve, which covers the outer circumference of the sprocket disc. The movable guard plate is coaxially arranged with the sprocket disc and rotates with it. A motor base is provided on the surface of the protective sleeve, and a generator is provided inside the motor base. Its output shaft is connected to a transmission roller. A toothed disc is provided on the surface of the sprocket disc, and a helical toothed blade is provided on the surface of the transmission roller for meshing with the surface of the toothed disc.

[0009] In a preferred embodiment, the moving guard disc is further configured as follows: it is a flexible disc-shaped structure, installed on the front of the sprocket disc and arranged coaxially with it; the sleeve is an arc-shaped groove structure, sleeved on the outer periphery of the sprocket disc and the toothed disc. Specifically, through the rotational coverage of the moving guard disc and the fixed coverage of the sleeve, foreign objects can be effectively blocked from entering the sprocket meshing area, thereby improving the protection effect during sprocket operation.

[0010] In a preferred embodiment, the surface of the bolster disc is provided with a helical tooth structure evenly distributed along the circumference. The helical teeth are oblique teeth, and the tooth shape extends continuously along the circumference. The tooth surface inclination angle forms a meshing angle with the output axis of the helical tooth blade. Specifically, this structure can form a stable mesh with the helical tooth blade on the transmission roller to realize the power conversion from lateral to radial, and also has the ability to cut foreign objects.

[0011] In a preferred embodiment, the transmission roller is further configured such that: the transmission roller is arranged in a conical shape, with a plurality of helical toothed blades evenly distributed on its outer circumference, and the helical toothed blades precisely mesh with the helical teeth of the bolster disc; specifically, when the sprocket disc rotates, the helical toothed blades mesh and rotate, which can not only cut foreign objects entering the meshing area, but also efficiently transmit power to drive the generator to work.

[0012] In a preferred embodiment, the spiral tooth blade is further configured such that its surface is provided with a cutting edge for shearing and separating small foreign objects that enter between the bolster disc and the transmission roller; specifically, this can prevent foreign objects from entangled or jamming the sprocket during operation, effectively improving the operational reliability of the transmission system.

[0013] In a preferred embodiment, the generator is further configured such that its output is electrically connected to an inverter module and connected to an energy storage component via the inverter module, which converts the mechanical energy generated by the rotation of the sprocket into electrical energy to achieve kinetic energy recovery. Specifically, during the rotation of the sprocket as the vehicle runs, it can continuously supply energy to the vehicle's lighting, electronic control system, or energy storage module, thereby improving the vehicle's energy utilization rate.

[0014] In summary, this utility model, through the integrated design of sprocket protection, meshing transmission, and energy recovery structure, can not only achieve the functions of blocking and shearing foreign objects on the surface and periphery of the sprocket, but also drive the power generation device to recover energy during the rotation of the sprocket. It has significant advantages such as compact structure, safety and efficiency, and easy maintenance, and is particularly suitable for sprocket protection and additional energy utilization scenarios in various power transmission vehicles.

[0015] The beneficial effects achieved by this utility model are as follows:

[0016] 1. In this utility model, the dynamic protective disc is arranged coaxially with the sprocket disc and rotates with it, so as to achieve dynamic coverage and protection of the sprocket disc surface. Combined with the static covering of the outer periphery of the sprocket disc by the protective sleeve, it can effectively prevent foreign objects from being rolled into the sprocket area. When foreign objects enter, they can be sheared and separated by the meshing between the helical teeth set on the surface of the transmission roller and the helical teeth on the surface of the bolster disc, so as to avoid foreign objects from wrapping around the sprocket and causing jamming or damage, thereby enhancing the safety and reliability of the system operation.

[0017] 2. In this utility model, through the meshing transmission between the sprocket disc and the transmission roller, the transmission roller can be driven to rotate as the sprocket disc rotates with the vehicle, thereby generating electrical energy through the generator connected to it, realizing the recovery and utilization of the sprocket's kinetic energy, improving the vehicle's energy efficiency, and possessing a good kinetic energy feedback function. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the surface structure of a sprocket disk according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the sheath and moving guard plate structure according to one embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the toothed disc and transmission roller structure of one embodiment of the present invention.

[0022] Figure label:

[0023] 100. Protective plate frame; 110. Protective sleeve; 120. Motor mount; 121. Generator;

[0024] 200. Sprocket; 210. Pillow tooth disc; 220. Drive roller; 221. Rotary tooth blade;

[0025] 300. Dynamic support plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0027] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0028] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a sprocket guard plate.

[0029] Combination Figures 1-4 As shown, the present invention provides a sprocket guard plate, comprising: a guard plate frame 100, a sprocket disc 200, and a movable guard plate 300, wherein the sprocket disc 200 is used to transmit the driving power of the rear wheels of the vehicle.

[0030] The movable guard plate 300 is disposed on the surface of the sprocket disc 200 and is coaxially arranged with the sprocket disc 200. Its material can be flexible high-strength engineering plastic or composite material, so as to conform to the surface of the sprocket disc 200 during rotation. The movable guard plate 300 is used to cover the front of the sprocket disc 200 as it rotates, thereby achieving dynamic protection of the sprocket surface without affecting the chain meshing.

[0031] One end of the guard plate frame 100 is fixedly connected to a sleeve 110. The sleeve 110 is arc-shaped and fits around the outer periphery of the sprocket disc 200 and the toothed disc 210, providing static protection to the outside of the sprocket system and limiting the movement trajectory of the moving guard plate 300 above the sprocket disc 200. The outer periphery of the moving guard plate 300 slides against the surface of the sleeve 110 and remains covered as it rotates with the sprocket disc 200.

[0032] The sheath 110 has a motor base 120 on its surface, and a generator 121 is installed inside the motor base 120. The output shaft end of the generator 121 is connected to a transmission roller 220, which is located inside the motor base 120 and forms a meshing transmission structure with the toothed disc 210 located on the sprocket disc 200.

[0033] The bolster toothed disc 210 is fixedly mounted on the surface of the sprocket disc 200 and rotates synchronously with the sprocket disc 200. The surface of the bolster toothed disc 210 is provided with a helical tooth structure evenly distributed along the circumference. The helical teeth are oblique teeth with the tooth shape continuously extending along the circumference of the bolster toothed disc 210. The tooth surface inclination angle forms a predetermined angle with the output axis of the helical tooth blade 221, which is used to realize the transmission of lateral power to radial power.

[0034] The transmission roller 220 has a conical structure with several helical blades 221 evenly distributed along the circumference. These helical blades 221 have a spiral cutting edge structure and mesh with the helical teeth on the surface of the bolster disc 210 to achieve power transmission. The transmission roller 220 is designed to taper radially towards the center of the bolster disc 210 for easy meshing with the helical teeth. The spacing between adjacent helical blades 221 matches the tooth width of the helical teeth on the surface of the bolster disc 210 to ensure meshing stability.

[0035] When the sprocket 200 rotates with the movement of the vehicle, its surface toothed disc 210 rotates synchronously. Through its helical tooth structure, it drives the transmission roller 220 that meshes with it to rotate, thereby driving the generator 121 to work. This realizes the conversion of part of the kinetic energy during the movement of the sprocket into electrical energy, which powers the vehicle's electrical system or energy storage module, forming a kinetic energy recovery path.

[0036] Furthermore, when foreign objects such as plastic film or weeds enter the space between the sprocket and the external environment, the dynamic guard plate 300 provides initial shielding to the surface of the sprocket disc 200, while the sleeve 110 provides protective covering to the outer periphery of the sprocket, reducing the entrainment of foreign objects. If foreign objects enter the transmission meshing area, during rotation, the shearing action between the helical teeth 221 and the helical teeth of the bolster disc 210 can cut the foreign objects, preventing them from becoming entangled on the sprocket surface or jamming the transmission system, further enhancing the operational stability and anti-interference capability of the entire system.

[0037] Furthermore, the output of the generator 121 can be electrically connected to the inverter module and to the vehicle's energy storage components to convert mechanical energy into stable electrical energy output to meet the power needs of the vehicle's electronic control or lighting systems.

[0038] In summary, based on the traditional sprocket system, this utility model achieves effective foreign object protection during sprocket operation through the combined protective design of the moving guard 300 and the protective sleeve 110; through the special meshing structure between the toothed disc 210 and the transmission roller 220, it realizes the kinetic energy recovery and foreign object shearing function at the sprocket end, and has good structural adaptability, safety and energy utilization efficiency.

[0039] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sprocket guard plate, characterized in that, include: The device comprises a guard plate frame (100), a sprocket disc (200), and a movable guard plate (300) fixed to the surface of the sprocket disc (200). One end of the guard plate frame (100) is fixedly connected to a sleeve (110) located on the outer periphery of the sprocket disc (200). The outer periphery of the movable guard plate (300) slides against the surface of the sleeve (110). The surface of the sleeve (110) is provided with a motor base (120), and a generator (121) is fixedly installed inside the motor base (120). A toothed disc (210) is fixedly installed on the surface of the sprocket disc (200). The shaft end of the generator (121) is fixedly connected to a transmission roller (220) located inside the motor base (120). The surface of the transmission roller (220) is provided with a plurality of helical blades (221) that mesh with the surface of the toothed disc (210). The helical blades (221) are in the shape of spiral blades.

2. A sprocket guard plate according to claim 1, characterized in that, The moving guard plate (300) is a flexible disc structure and is arranged coaxially with the sprocket disc (200). The sleeve (110) is an arc-shaped groove and is sleeved on the outer periphery of the sprocket disc (200) and the bolster disc (210).

3. A sprocket guard plate according to claim 1, characterized in that, The surface of the bolster tooth disk (210) is provided with a spiral tooth structure evenly distributed along the circumference. The spiral teeth are arranged obliquely and are used to mesh with the corresponding spiral tooth blade (221). The spiral teeth are oblique tooth structures, and the tooth shape extends continuously along the circumference of the bolster tooth disk (210). The tooth surface inclination angle forms a predetermined angle with the output axis of the spiral tooth blade (221) to realize the transmission of lateral power to radial power.

4. A sprocket guard plate according to claim 1, characterized in that, The transmission roller (220) has a conical structure and its diameter gradually decreases from the radial direction of the toothed disc (210) towards the center of the toothed disc (210). The spiral teeth (221) are evenly distributed on the surface of the transmission roller (220) in a circumferential direction, and the gap between adjacent spiral teeth (221) is adapted to the tooth width on the surface of the toothed disc (210).

5. A sprocket guard plate according to claim 1, characterized in that, The surface of the spiral blade (221) is provided with a cutting edge for cutting foreign objects between the toothed disc (210) and the transmission roller (220).

6. A sprocket guard plate according to claim 1, characterized in that, The generator (121) is electrically connected to an inverter module at its end, and an energy storage component is connected through the inverter module to recover part of the rotational kinetic energy of the sprocket disc (200).

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