A compact planar scroll spring energy recovery device

Abstract

The application discloses a compact plane scroll spring energy recovery device, which comprises a center fixed shaft, a rotating inner shaft is sleeved on the center fixed shaft, a first friction disc is sleeved on the rotating inner shaft through a bearing, a first clutch and a second clutch are sleeved on the first friction disc, a clutch adapter is embedded and connected below the first friction disc, a spring winding box is fixedly connected on the clutch adapter, the spring winding box is sleeved on the rotating inner shaft, and a spring is arranged in the spring winding box; first and second fixed discs are fixedly connected at two ends of the center fixed shaft, a rotating inner shaft ratchet is fixedly connected on one end of the rotating inner shaft close to the second fixed disc, an end face ratchet is arranged outside the rotating inner shaft ratchet, and the gear directions of the rotating inner shaft ratchet and the end face ratchet are oppositely arranged. According to the application, the energy recovery direction and the energy release direction are consistent by saving half of the volume, the reversing mechanism is saved, the weight is saved, and the practicability is enhanced.

Description

Technical Field

[0001] This invention relates to the technical field of automotive machinery, and in particular to a compact planar spiral spring energy recovery device. Background Technology

[0002] Currently, using spiral springs for energy recovery offers advantages such as high efficiency, high flexibility, and less pollution during production. Therefore, spiral spring energy recovery devices can be applied to various braking energy recovery scenarios. However, existing devices are equipped with reversing mechanisms to ensure the energy recovery direction aligns with the energy release direction, resulting in a complex structure that limits their application in more situations. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a compact planar spiral spring energy recovery device that achieves alignment of energy recovery and energy release directions while saving half the volume, eliminating the need for a reversing mechanism, reducing weight, and enhancing practicality. To achieve the above-mentioned objectives and other advantages of the present invention, a compact planar spiral spring energy recovery device is provided, comprising:

[0004] A central fixed shaft is rotatably sleeved on the central fixed shaft. A first friction disc is sleeved on the rotating inner shaft via a bearing. A first clutch component and a second clutch component are sleeved on the first friction disc. A clutch adapter is fitted and connected below the first friction disc. A coil spring box is fixedly connected to the clutch adapter. The coil spring box is sleeved on the rotating inner shaft and contains a coil spring.

[0005] The two ends of the central fixed shaft are respectively fixed with a first fixed plate and a second fixed plate. A rotating inner shaft ratchet is fixed to one end of the rotating inner shaft near the second fixed plate. An end face ratchet is provided outside the rotating inner shaft ratchet. The gears of the rotating inner shaft ratchet and the end face ratchet are arranged in opposite directions. A rotating inner shaft pawl and an end face pawl are respectively provided outside the rotating inner shaft ratchet and the end face ratchet.

[0006] Preferably, the first friction disc is provided with two friction plates, an inner ratchet disc is fixedly provided on the friction plates, a toothed disc is provided above the inner ratchet disc, a first fixed disc is provided above the toothed disc, an inner ratchet disc cover is fixed in the middle of the inner ratchet disc, and the inner ratchet disc and the first friction disc are connected by multiple studs.

[0007] Preferably, the inner ratchet disc cover is sleeved on the central fixed shaft via a bearing, and the friction plate, the inner ratchet disc, and the toothed disc are sequentially sleeved on the central fixed shaft in the vertical direction.

[0008] Preferably, an inner ratchet pawl is provided on the end face of the rotating inner shaft near the inner ratchet disc cover. The inner ratchet pawl matches the internal tooth end of the inner ratchet disc, and the internal tooth direction of the inner ratchet disc is counterclockwise. The gear direction of the end face ratchet is counterclockwise, and the gear direction of the rotating inner shaft ratchet is clockwise.

[0009] Preferably, a plurality of fixed posts and guide posts are fixedly connected to the second fixed plate, and the fixed posts and guide posts are staggered. A plurality of hydraulic cylinders are fixedly connected to the second fixed plate. The fixed posts are fixedly connected to the first fixed plate. The end of the guide post away from the second fixed plate passes through the first clutch, the second clutch and the first fixed plate in sequence. The telescopic rod of the hydraulic cylinder is fixedly connected to the first clutch and the second clutch.

[0010] Compared with the prior art, the beneficial effects of this invention are: it can realize energy recovery and release, and the rotating inner shaft of the coil spring box and the coil spring are designed to be rotatable, eliminating the need for a reversing mechanism, realizing that the energy recovery direction is consistent with the energy release direction, saving weight and volume, and enhancing practicality. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the compact planar spiral spring energy recovery device according to the present invention;

[0012] Figure 2 This is a three-dimensional exploded structural diagram of the compact planar spiral spring energy recovery device according to the present invention. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] Reference Figure 1-2A compact planar spiral spring energy recovery device includes: a central fixed shaft 2, on which a rotating inner shaft 3 is rotatably sleeved, the rotating inner shaft 3 rotating around the central fixed shaft 2, a first friction disc 15 sleeved on the rotating inner shaft 3 via bearings, a first clutch 141 and a second clutch 142 sleeved on the first friction disc 15, a clutch adapter 19 fitted below the first friction disc 15, a spring box 5 fixedly connected to the clutch adapter 19, so that the clutch adapter 19 moves up and down while rotating together with the spring box 5, realizing the linkage and separation of the spring box 5 and the inner ratchet disc 17, the spring box 5 being sleeved on the rotating inner shaft 3, and a spring 7 being provided inside the spring box 5, the spring 7 being assembled between the spring box 5 and the rotating inner shaft 3; the first friction disc 15 can slide up and down axially and rotate around the central fixed shaft 2.

[0015] The two ends of the central fixed shaft 2 are respectively fixed with a first fixed disk 1 and a second fixed disk 11. A rotating inner shaft ratchet 20 is fixed to one end of the rotating inner shaft 3 near the second fixed disk 11. An end face ratchet 13 is provided outside the rotating inner shaft ratchet 20. The gears of the rotating inner shaft ratchet 20 and the end face ratchet 13 are arranged in opposite directions. A rotating inner shaft pawl and an end face pawl 21 are respectively provided outside the rotating inner shaft ratchet 20 and the end face ratchet 13. The rotating inner shaft pawl is fixed on the second fixed disk 11. The rotating inner shaft 3 can be rotated in one direction by the rotating inner shaft pawl. The coil spring box 5 can be rotated in one direction by the end face pawl 21.

[0016] Furthermore, the first friction disc 15 is provided with two friction plates 16. The friction plates 16 can only rotate around the central fixed axis 2 without other degrees of freedom. An inner ratchet disc 17 is fixedly provided on one of the friction plates 16. A toothed disc 18 is provided above the inner ratchet disc 17. A first fixed disc 1 is provided above the toothed disc 18. An inner ratchet disc cover 22 is fixed in the middle of the inner ratchet disc 17. The inner ratchet disc cover 22 is sleeved on the central fixed axis 2 through a bearing. The inner ratchet disc 17 and the first friction disc 15 are connected by multiple studs. The friction plates 16, the inner ratchet disc 17, and the toothed disc 18 are all connected. The rotating inner shaft 3, mounted vertically on the central fixed shaft 2, has an inner ratchet pawl 23 on its end face near the inner ratchet disc cover 22. This inner ratchet pawl 23 matches the internal teeth of the inner ratchet disc 17, with the internal teeth of the inner ratchet disc 17 rotating counter-clockwise. The gears of the end face ratchet 13 also rotate counter-clockwise, while the gears of the rotating inner shaft ratchet 20 rotate clockwise. The inner ratchet disc 17 rotates unidirectionally relative to the rotating inner shaft 3, and the inner ratchet disc 17 leads the rotating inner shaft 3. The rotation directions of the inner ratchet disc 17, the coil spring box 5, and the rotating inner shaft 3 are all the same. The power of this device is connected to the outside via the transmission component, the toothed disc 18.

[0017] Furthermore, multiple fixing posts 24 and guide posts 25 are fixedly connected to the second fixed plate 11, and the fixing posts 24 and guide posts 25 are staggered. Multiple hydraulic cylinders 26 are fixedly connected to the second fixed plate 11. The fixing posts 24 are fixedly connected to the first fixed plate 1. The end of the guide post 25 away from the second fixed plate 11 passes through the first clutch 141, the second clutch 142, and the first fixed plate 1 in sequence. The extension rod of the hydraulic cylinder 26 is fixedly connected to the first clutch 141 and the second clutch 142. The inner ratchet plate 17 is connected to the first friction plate 15 by multiple studs. The first friction plate 15, the first clutch 141, the second clutch 142, and the hydraulic cylinders 26 form a clutch. When not collecting energy, the first friction plate 15 is disconnected from the inner ratchet plate 17. When collecting energy, the clutch is connected to the inner ratchet plate 17, and the power is transmitted from the inner ratchet plate 17 to the spring box 5. The spring 7 is wound up, realizing energy recovery. When releasing energy, a mechanism such as a pull cable or lever is used to release the ratchet pawl of the rotating inner shaft. The rotating inner shaft 3 then begins to rotate under the action of the coil spring 7, driving the inner ratchet pawl 23 to transmit power to the inner ratchet disc 17, thus releasing energy. To protect the coil spring 7, the clutch clamping force can be controlled, or a protective coil spring box 5 can be used. By controlling the clutch clamping force, the coil spring 7 can slip when subjected to a torque exceeding its maximum limit, isolating the power source and thus protecting the coil spring 7. Similarly, by using a protective coil spring box 5, the coil spring 7 can slip within the spring box 5 when subjected to a torque exceeding its maximum limit, thus protecting the coil spring 7. Both the coil spring box 5 and the rotating inner shaft 3 can rotate around the central fixed axis 2. The appropriate coil spring size should be selected based on the actual load conditions.

[0018] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention, and applications, modifications and variations thereof will be apparent to those skilled in the art.

[0019] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A compact planar spiral spring energy recovery device, characterized in that, include: A central fixed shaft (2) is rotatably sleeved on the central fixed shaft (2). A rotating inner shaft (3) is sleeved on the rotating inner shaft (3) via a bearing. A first friction disc (15) is sleeved on the first friction disc (15). A first clutch (141) and a second clutch (142) are sleeved on the first friction disc (15). A clutch adapter (19) is fitted and connected below the first friction disc (15). A coil spring box (5) is fixedly connected to the clutch adapter (19). The coil spring box (5) is sleeved on the rotating inner shaft (3). A coil spring (7) is provided inside the coil spring box (5). The two ends of the central fixed shaft (2) are respectively fixed with a first fixed disk (1) and a second fixed disk (11). The inner rotating shaft (3) is fixed with a ratchet (20) near the second fixed disk (11). An end face ratchet (13) is provided outside the inner rotating shaft ratchet (20). The gears of the inner rotating shaft ratchet (20) and the end face ratchet (13) are arranged in opposite directions. The inner rotating shaft ratchet (20) and the end face ratchet (13) are respectively provided with a ratchet pawl and an end face ratchet pawl (21).

2. The compact planar spiral spring energy recovery device as described in claim 1, characterized in that, Two friction plates (16) are provided on the first friction plate (15). An inner ratchet plate (17) is fixedly provided on the friction plate (16). A toothed plate (18) is provided above the inner ratchet plate (17). A first fixed plate (1) is provided above the toothed plate (18). An inner ratchet plate cover (22) is fixed in the middle part of the inner ratchet plate (17). The inner ratchet plate (17) and the first friction plate (15) are connected by multiple studs.

3. The compact planar spiral spring energy recovery device as described in claim 2, characterized in that, The inner ratchet cover (22) is sleeved on the central fixed shaft (2) through a bearing, and the friction plate (16), the inner ratchet disc (17) and the toothed disc (18) are sleeved on the central fixed shaft (2) in the vertical direction.

4. The compact planar spiral spring energy recovery device as described in claim 3, characterized in that, An inner ratchet pawl (23) is provided on the end face of the rotating inner shaft (3) near the inner ratchet disc cover (22). The inner ratchet pawl (23) matches the internal tooth end of the inner ratchet disc (17), and the internal tooth direction of the inner ratchet disc (17) is counterclockwise. The gear direction of the end face ratchet (13) is counterclockwise, and the gear direction of the rotating inner shaft ratchet (20) is clockwise.

5. The compact planar spiral spring energy recovery device as described in claim 4, characterized in that, Multiple fixed posts (24) and guide posts (25) are fixedly connected to the second fixed plate (11), and the fixed posts (24) and guide posts (25) are staggered. Multiple hydraulic cylinders (26) are fixedly connected to the second fixed plate (11). The fixed posts (24) are fixedly connected to the first fixed plate (1). The end of the guide post (25) away from the second fixed plate (11) passes through the first clutch (141), the second clutch (142) and the first fixed plate (1) in sequence. The telescopic rod of the hydraulic cylinder (26) is fixedly connected to the first clutch (141) and the second clutch (142).

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