A high-rigidity, buffer-integrated electromagnetic clutch for new energy vehicle transmissions

Abstract

This invention discloses a high-rigidity, buffer-integrated electromagnetic clutch for new energy vehicle transmissions, relating to the field of electromagnetic clutch technology for new energy vehicle transmissions. It includes a housing and a transmission assembly, with the transmission assembly housed within the housing. The transmission assembly includes a bushing. This high-rigidity, buffer-integrated electromagnetic clutch for new energy vehicle transmissions integrates an electromagnetic clutch mechanism, a continuous torque transmission mechanism, a continuously variable transmission mechanism, and a reset mechanism within the same housing. The electromagnetic clutch assembly simultaneously performs two functions: power on / off and transmission drive. By changing the current flowing through the electromagnetic coil, the electromagnetic attraction force can be continuously and linearly adjusted, thereby precisely controlling the axial displacement of the turntable and the transmission ratio. It can also be directly connected to the electronic control system of the new energy vehicle to achieve intelligent dynamic adjustment of the power transmission ratio, optimizing vehicle power output and energy consumption, and improving the overall driving experience.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic clutch technology for new energy vehicle transmissions, specifically a high-rigidity, buffer-integrated electromagnetic clutch for new energy vehicle transmissions. Background Technology

[0002] In automotive powertrain systems, the clutch is the core component for power on / off and gear shifting. In automated gearboxes, electromagnetic clutches are widely used in automatic gear shifting due to their convenient control and rapid response. However, the functional modes of conventional electromagnetic clutches are relatively limited. Most electromagnetic clutches can only achieve single gear shifting, with only two working states: neutral and a single working gear. When the electromagnetic clutch is in neutral, the power output path is cut off, and power cannot be transmitted outward. After entering a working gear, it can only continuously output power at a fixed transmission ratio. Since the motor in the automotive power unit has a fixed power and speed operating range, relying on a single gear for power output will significantly limit the vehicle's speed adjustment range and make it difficult to adapt to the power output requirements of the motor under different operating conditions, thus restricting the adaptability of the vehicle's power performance to driving conditions.

[0003] To address the shortcomings of single-gear electromagnetic clutches, existing technologies have developed related improvements, such as the electromagnetic clutch assembly, electromagnetic clutch, power unit, and vehicle disclosed in CN119103272A. This solution optimizes the electromagnetic clutch into a structure with two power output gears, effectively increasing the gear selection range compared to traditional single-gear products and alleviating the limitations of single-gear clutches to some extent. However, these improvements still belong to stepped transmission structures with a limited number of gears. The transmission ratio can only be adjusted by gear-level jumps and cannot achieve continuously variable transmission. It still cannot continuously and smoothly adjust the transmission ratio according to driving conditions, making it difficult to fully utilize the motor's speed and power range, and thus failing to fundamentally solve the problem of limited vehicle speed regulation. Summary of the Invention

[0004] The purpose of this invention is to provide a high-rigidity, buffered, integrated electromagnetic clutch for new energy vehicle transmissions to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-rigidity buffer integrated electromagnetic clutch for a new energy vehicle transmission, comprising a housing and a transmission assembly. The housing houses the transmission assembly, which includes a bushing. Trunnions are symmetrically fixed on the outer walls of both sides of the bushing, and limiting pins are installed at both ends of the bushing sidewalls. A drive shaft is rotatably mounted inside the bushing, and annular grooves are radially recessed at both ends of the drive shaft. The annular grooves cooperate with the limiting pins to achieve axial limiting of the drive shaft. Spherical gears are coaxially fixed at both ends of the drive shaft, and variable pitch teeth are provided on the outer circumferential surface of the spherical gears, distributed along the meridian direction of the spherical surface. The tooth gap of the variable pitch teeth of the spherical gears gradually increases from the end of the sphere towards the middle.

[0006] Furthermore, a driven conical wheel is rotatably mounted on one side of the housing, and an output shaft is coaxially fixed at the middle of the large end of the driven conical wheel. The conical surface of the driven conical wheel is provided with variable pitch teeth distributed along the generatrix of the conical surface, and the tooth gap of the variable pitch teeth of the driven conical wheel gradually increases from the small end of the conical surface to the large end of the conical surface.

[0007] Furthermore, an electromagnetic clutch assembly is installed on the other side of the housing. The electromagnetic clutch assembly includes a frame fixedly installed on the outer wall of the other side of the housing. A pulley is rotatably mounted on the frame via a bearing, and an electromagnetic coil is embedded in the inner groove of the pulley. The electromagnetic coil is fixed to the side wall of the frame.

[0008] Furthermore, the electromagnetic clutch assembly also includes a turntable coaxially arranged with the pulley, a leaf spring is installed on the side of the turntable facing the pulley, and a pressure plate is fixedly installed at the end of the leaf spring.

[0009] Furthermore, the electromagnetic clutch assembly also includes an input shaft coaxially disposed inside the central hole of the turntable, wherein the outer peripheral key of the input shaft engages with the keyway of the central hole of the turntable, and the turntable can slide axially outside the input shaft and maintain rotational linkage.

[0010] Furthermore, the electromagnetic clutch assembly also includes a drive conical wheel coaxially fixed to the end of the input shaft. The drive conical wheel and the driven conical wheel have the same structure and are mirror-symmetrically arranged at both ends of the housing. The spherical gears at both ends of the transmission shaft respectively engage with the conical surfaces of the drive conical wheel and the driven conical wheel for transmission.

[0011] Furthermore, the electromagnetic clutch assembly also includes a sliding sleeve disposed outside the turntable. The turntable rotates inside the sliding sleeve, and the inner diameter of the hole in the sliding sleeve is larger than the outer diameter of the input shaft, so that the sliding sleeve only moves axially outside the input shaft without rotating.

[0012] Furthermore, the electromagnetic clutch assembly also includes connecting rods fixedly connected to both ends of the outer side of the sliding sleeve. An end plate is fixedly installed at the end of the connecting rod, and a core rod is fixedly connected at the center of the end plate. The outer diameter of the core rod is smaller than the inner diameter of the input shaft and the drive conical wheel.

[0013] Furthermore, the housing has a built-in movable component, which includes a bracket fixedly connected to the end of the core rod. The bracket has notches at both the upper and lower ends, and the bushings on both sides are rotatably hinged to the inner wall of the notches through trunnions. The upper and lower ends of the bracket are fixedly installed with sliders, which slide axially above the guide rod. The guide rod has fixed plates at both ends, and the fixed plates are fixedly installed on the inner wall of the housing. A reset spring is sleeved on one side of the guide rod for automatic reset of the device after the electromagnetic coil is de-energized.

[0014] Furthermore, when the bracket moves along the common axis between the driving conical wheel and the driven conical wheel, the transmission shaft tilts, causing the meshing contact points of the spherical gears at both ends of the transmission shaft and the corresponding conical wheels to move continuously along the generatrix of the conical surface. The tooth profiles of the spherical gears and the conical wheels maintain tooth pitch matching at any meshing contact point, realizing continuous conjugate meshing transmission and eliminating tooth interference.

[0015] This invention provides a high-rigidity, buffer-integrated electromagnetic clutch for new energy vehicle transmissions, which has the following beneficial effects; 1. This device integrates an electromagnetic clutch mechanism, a continuous torque transmission mechanism, a continuously variable transmission mechanism, and a reset mechanism into the same housing. The electromagnetic clutch component simultaneously realizes two major functions: power on / off and speed change execution. By changing the magnitude of the current flowing through the electromagnetic coil, the electromagnetic attraction force can be continuously and linearly adjusted, thereby precisely controlling the axial displacement of the turntable and the transmission ratio. It can also be directly connected to the electronic control system of new energy vehicles to realize intelligent dynamic adjustment of the power transmission ratio, optimize vehicle power output and energy consumption performance, and improve the overall driving experience.

[0016] 2. This device features a variable pitch tooth profile on the outer circumference of the spherical gear, with the tooth gap gradually increasing from the end of the sphere towards the middle. The driving and driven conical wheels also feature a variable pitch tooth profile on their conical surfaces, with the tooth gap gradually increasing from the small end to the large end of the conical surface. Throughout the continuous movement of the meshing point, the spherical gear and the conical wheel can achieve precise tooth pitch matching at any meshing position, forming a continuous conjugate meshing transmission. This completely eliminates tooth interference, jamming, and wear problems, achieving smooth stepless speed change.

[0017] 3. This device uses a leaf spring to connect the pressure plate and the turntable. Its core advantage is that it uses the elastic bending deformation of the leaf spring to compensate for the axial position difference between the turntable and the pulley. In the process of adjusting the electromagnetic attraction force and changing the axial distance between the two to achieve speed change, the rotational torque is always transmitted continuously. At the same time, the leaf spring has elastic buffering capacity, which can absorb the instantaneous torque impact and vibration of the transmission system, further improving the smoothness of transmission and extending the service life of the components. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of the device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the device of the present invention; Figure 3 This is a schematic diagram of the exploded structure of the electromagnetic clutch assembly of the present invention; Figure 4 This is a cross-sectional view of the electromagnetic clutch assembly of the present invention; Figure 5 This is a schematic diagram of the structure of the mobile component of the present invention; Figure 6 This is a schematic diagram of the structure of the transmission assembly of the present invention; Figure 7 This is a schematic diagram of the engagement method between the spherical gear and the driven conical wheel of the present invention; Figure 8 This is a schematic diagram illustrating the changes in the variable speed transmission state of the present invention.

[0019] In the diagram: 1. Housing; 2. Transmission assembly; 201. Bushing; 202. Trunnion; 203. Limiting pin; 204. Drive shaft; 205. Annular groove; 206. Spherical gear; 3. Driven conical wheel; 4. Output shaft; 5. Electromagnetic clutch assembly; 501. Frame; 502. Pulley; 503. Electromagnetic coil; 504. Turntable; 505. Leaf spring; 506. Pressure plate; 507. Input shaft; 508. Drive conical wheel; 509. Sliding sleeve; 510. Connecting rod; 511. End plate; 512. Core rod; 6. Moving assembly; 601. Bracket; 602. Notch; 603. Slider; 604. Guide rod; 605. Fixing plate; 606. Return spring. Detailed Implementation

[0020] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0021] Please see Figures 6 to 8This invention provides a technical solution: a high-rigidity, buffer-integrated electromagnetic clutch for a new energy vehicle transmission, comprising a housing 1 and a transmission assembly 2. The housing 1 houses the transmission assembly 2, which includes a bushing 201. Trunnions 202 are symmetrically fixed to the outer walls of both sides of the bushing 201, and limiting pins 203 are installed at both ends of the bushing 201's side walls. A drive shaft 204 is rotatably mounted inside the bushing 201, and annular grooves 205 are radially recessed at both ends of the drive shaft 204. The annular grooves 205 cooperate with the limiting pins 203 to engage the drive shaft 204. The axial limit of 4, the two ends of the transmission shaft 204 are coaxially fixed with spherical gears 206, and the outer circumferential surface of the spherical gears 206 is provided with variable pitch tooth profiles distributed along the meridian direction of the spherical surface, and the tooth gap of the variable pitch tooth profile of the spherical gears 206 gradually increases from the end of the sphere to the middle. A driven conical wheel 3 is rotatably installed on one side of the housing 1, and the output shaft 4 is coaxially fixed at the middle of the large end of the driven conical wheel 3. The conical surface of the driven conical wheel 3 is provided with variable pitch tooth profiles distributed along the generatrix direction of the conical surface, and the tooth gap of the variable pitch tooth profile of the driven conical wheel 3 gradually increases from the small end of the conical surface to the large end of the conical surface. The specific operation is as follows: Under the drive of the core rod 512, the bracket 601 moves linearly back and forth along the common axis of the driving conical wheel 508 and the driven conical wheel 3. The bracket 601 is hinged to the trunnions 202 on both sides of the bushing 201 through the notch 602. When the bracket 601 moves, it pulls the bushing 201 to swing as a whole, thereby causing the transmission shaft 204 inside the bushing 201 to tilt. After the transmission shaft 204 tilts, the meshing contact points of the spherical gears 206 fixed at both ends and the corresponding conical wheels move continuously along the generatrix of the conical surface. When the bracket 601 moves towards the driving conical wheel 508, the meshing point of the spherical gear 206 with the driving conical wheel 508 moves towards the large end of the conical surface, and the meshing point with the driven conical wheel 3 moves towards the small end of the conical surface. The device is implemented... The current speed-increasing transmission, when the bracket 601 moves towards the driven conical wheel 3, the meshing point of the spherical gear 206 and the driving conical wheel 508 moves towards the small end of the cone surface, and the meshing point with the driven conical wheel 3 moves towards the large end of the cone surface. The device realizes speed reduction transmission. The device sets a variable pitch tooth profile on the outer periphery of the spherical gear 206, and the tooth gap gradually expands from the end of the sphere to the middle. The driving conical wheel 508 and the driven conical wheel 3 also set a variable pitch tooth profile on their conical surfaces, and the tooth gap gradually expands from the small end of the cone surface to the large end. During the entire process of continuous movement of the meshing point, the spherical gear 206 and the conical wheel can achieve precise tooth pitch matching at any meshing position, forming a continuous conjugate meshing transmission, completely eliminating tooth interference, jamming, and wear problems, and realizing smooth stepless speed change; Please see Figures 1 to 4An electromagnetic clutch assembly 5 is installed on the other side of the housing 1. The electromagnetic clutch assembly 5 includes a frame 501 fixedly installed on the outer wall of the other side of the housing 1. A pulley 502 is rotatably mounted on the frame 501 via bearings. An electromagnetic coil 503 is embedded in the inner groove of the pulley 502 and is fixed to the side wall of the frame 501. The electromagnetic clutch assembly 5 also includes a turntable 504 coaxially arranged with the pulley 502. A leaf spring 505 is installed on the end face of the turntable 504 facing the pulley 502, and a pressure plate 506 is fixedly installed at the end of the leaf spring 505. The electromagnetic clutch assembly 5 also includes an input shaft 507 coaxially arranged inside the central hole of the turntable 504. The keyway on the outer periphery of the input shaft 507 engages with the keyway in the central hole of the turntable 504, and the turntable 504 can slide axially outside the input shaft 507 and maintain rotational connection. The electromagnetic clutch assembly 5 also includes a coaxially fixed input shaft 507. The drive conical wheel 508 at the end of the input shaft 507 has the same structure as the driven conical wheel 3 and is mirror-symmetrically arranged at both ends of the housing 1. The ball gears 206 at both ends of the transmission shaft 204 respectively engage with the conical surfaces of the drive conical wheel 508 and the driven conical wheel 3 for transmission. The electromagnetic clutch assembly 5 also includes a sliding sleeve 509 disposed outside the turntable 504. The turntable 504 rotates inside the sliding sleeve 509, and the inner diameter of the hole in the sliding sleeve 509 is larger than the outer diameter of the input shaft 507, so that the sliding sleeve 509 only moves axially outside the input shaft 507 without rotating. The electromagnetic clutch assembly 5 also includes a connecting rod 510 fixedly connected to both ends of the outer side of the sliding sleeve 509. An end plate 511 is fixedly installed at the end of the connecting rod 510, and a core rod 512 is fixedly connected at the center of the end plate 511. The outer diameter of the core rod 512 is smaller than the inner diameter of the hole of the input shaft 507 and the drive conical wheel 508. The specific operation is as follows: the car's power unit drives the pulley 502 to rotate continuously. After a working current is supplied to the electromagnetic coil 503, the electromagnetic coil 503 generates an axial electromagnetic attraction, attracting the coaxially mounted turntable 504 towards the pulley 502. This ultimately causes the pressure plate 506 to tightly adhere to the end face of the pulley 502. The rotational torque of the pulley 502 is transmitted via the pressure plate 506 to the leaf spring 505, and then from the leaf spring 505 to the turntable 504. Because the keyway in the center of the turntable 504 engages with the key protrusion on the outer periphery of the input shaft 507, the turntable 504 rotates synchronously with the pulley 502, driving the input shaft 507 and the drive cone fixed at the end of the input shaft 507. The rotating disc 508 rotates together, completing the power input and initial transmission. When it is necessary to change the transmission ratio, the current flowing through the electromagnetic coil 503 is adjusted, and the electromagnetic attraction changes synchronously, thereby changing the axial distance between the turntable 504 and the pulley 502. That is, when the current increases, the electromagnetic attraction strengthens, and the turntable 504 moves further closer to the pulley 502, reducing the axial distance between them. Conversely, when the current decreases, the electromagnetic attraction weakens, and the turntable 504 moves away from the pulley 502 under the elastic force of the leaf spring 505, increasing the axial distance between them. Throughout the entire process of the axial relative displacement and continuous change in distance between the turntable 504 and the pulley 502, the leaf spring 505 maintains the axial distance between them. The elastic bending or stretching deformation of the leaf spring 505 compensates for the axial position difference between the pressure plate 506 and the turntable 504, ensuring a reliable transmission connection. The rotational torque of the pulley 502 can be continuously and uninterruptedly transmitted to the turntable 504, completely avoiding transmission disengagement and idle rotation caused by axial displacement. At the same time, the elastic deformation of the leaf spring 505 itself can absorb the instantaneous torque fluctuations and impacts during transmission, playing an auxiliary buffering and vibration reduction role. When the turntable 504 moves axially, it drives the outer sliding sleeve 509 to move axially synchronously without rotating with the turntable 504. The sliding sleeve 509 drives the end plate 511 to move together through the externally fixed connecting rod 510. The core rod 512 at the center of the end plate 511 slides axially within the central hole of the input shaft 507 and the drive conical wheel 508, ultimately transmitting the axial displacement to the bracket 601. This device uses a leaf spring 505 to connect the pressure plate 506 and the turntable 504. Its core advantage is that it uses the elastic bending deformation of the leaf spring 505 to compensate for the axial position difference between the turntable 504 and the pulley 502. During the process of adjusting the electromagnetic attraction force and changing the axial distance between the two to achieve speed change, the rotational torque is always continuously transmitted. At the same time, the leaf spring 505 has elastic buffering capacity, which can absorb the instantaneous torque impact and vibration of the transmission system, further improving the smoothness of transmission and extending the service life of the components. Please see Figure 5The housing 1 contains a movable component 6, which includes a bracket 601 fixedly connected to the end of the core rod 512. The bracket 601 has recesses 602 at both its upper and lower ends, and the bushings 201 on both sides are rotatably hinged to the inner wall of the recesses 602 via trunnions 202. Slider blocks 603 are fixedly installed at both ends of the bracket 601, and the sliders 603 slide axially on the guide rod 604. Fixing plates 605 are fixedly installed at both ends of the guide rod 604, and the fixing plates 605 are fixedly installed on the inner wall of the housing 1. A reset spring 606 is fitted on one side for automatic reset of the device after the electromagnetic coil 503 is de-energized. When the bracket 601 moves along the common axis between the driving conical wheel 508 and the driven conical wheel 3, the transmission shaft 204 tilts, causing the meshing contact points of the spherical gears 206 at both ends of the transmission shaft 204 and the corresponding conical wheels to move continuously along the generatrix of the conical surface. The tooth profiles of the spherical gears 206 and the conical wheels maintain tooth pitch matching at any meshing contact point, realizing continuous conjugate meshing transmission and eliminating tooth interference. The specific operation is as follows: When the current is cut off by the electromagnetic coil 503, the electromagnetic attraction completely disappears. The reset spring 606 releases its elastic potential energy, pushing the slider 603, bracket 601, core rod 512, sliding sleeve 509, and turntable 504 to reset as a whole. The turntable 504 drives the pressure plate 506 away from the pulley 502, and the two end faces are completely separated, cutting off the power transmission link. At the same time, the leaf spring 505 returns from the bent deformation state to the initial state, and the entire device returns to the standby initial state, completing one working cycle. This device integrates the electromagnetic clutch mechanism, torque continuous transmission mechanism, continuously variable transmission mechanism, and reset mechanism inside the same housing 1. The electromagnetic clutch component 5 simultaneously realizes the two major functions of power on / off and speed change execution drive. By changing the magnitude of the current flowing through the electromagnetic coil 503, the electromagnetic attraction can be continuously and linearly adjusted, thereby precisely controlling the axial displacement and transmission ratio of the turntable 504. It can also be directly connected to the electronic control system of new energy vehicles to realize intelligent dynamic adjustment of the power transmission ratio, optimize vehicle power output and energy consumption performance, and improve the overall driving experience.

[0022] In summary, when using this device: First, the car's power unit drives the pulley 502 to rotate continuously. After the working current is supplied to the electromagnetic coil 503, the electromagnetic coil 503 generates an axial electromagnetic attraction force, which attracts the coaxially arranged turntable 504 to move closer to the pulley 502. Finally, the pressure plate 506 is tightly attached to the end face of the pulley 502. The rotational torque of the pulley 502 is transmitted to the leaf spring 505 through the pressure plate 506, and then to the turntable 504 through the leaf spring 505. Since the keyway in the hole of the turntable 504 and the key protrusion on the outer periphery of the input shaft 507 are engaged with each other, the turntable 504 rotates synchronously with the pulley 502, and drives the input shaft 507 and the drive cone wheel 508 fixed at the end of the input shaft 507 to rotate together, thus completing the power connection and initial transmission. Secondly, when the transmission ratio needs to be changed, the current flowing through the electromagnetic coil 503 is adjusted, and the electromagnetic attraction changes synchronously, thereby changing the axial distance between the turntable 504 and the pulley 502. That is, when the current increases, the electromagnetic attraction strengthens, and the turntable 504 moves closer to the pulley 502, reducing the axial distance between them. Conversely, when the current decreases, the electromagnetic attraction weakens, and the turntable 504 moves away from the pulley 502 under the elastic force of the leaf spring 505, increasing the axial distance between them. Throughout the process of axial relative displacement and continuous change in distance between the turntable 504 and the pulley 502, the elastic bending or stretching deformation of the leaf spring 505 compensates for the axial position difference between them, ensuring that the pressure plate 506 and the turntable 504 always maintain a reliable transmission connection. The rotational torque of the pulley 502 can be transmitted to the turntable 504 without interruption, completely avoiding the transmission disengagement and free rotation problems caused by axial displacement. At the same time, the elastic deformation of the leaf spring 505 itself... The device can absorb instantaneous torque fluctuations and impacts during the transmission process, playing a role in auxiliary buffering and vibration reduction. When the turntable 504 moves axially, it drives the outer sliding sleeve 509 to move axially synchronously without rotating with the turntable 504. The sliding sleeve 509 drives the end plate 511 to move together through the connecting rod 510 fixed on the outside. The core rod 512 at the center of the end plate 511 slides axially in the middle hole of the input shaft 507 and the drive conical wheel 508, and finally transmits the axial displacement to the bracket 601. This device uses a leaf spring 505 to connect the pressure plate 506 and the turntable 504. The core advantage is that it uses the elastic bending deformation of the leaf spring 505 to compensate for the axial position difference between the turntable 504 and the pulley 502. In the process of adjusting the electromagnetic attraction and changing the axial distance between the two to achieve speed change, the rotational torque is always continuously transmitted. At the same time, the leaf spring 505 has elastic buffering capacity, which can absorb the instantaneous torque impact and vibration of the transmission system, further improving the smoothness of transmission and extending the service life of the parts. Then, driven by the core rod 512, the bracket 601 reciprocates linearly along the common axis of the driving conical wheel 508 and the driven conical wheel 3. The bracket 601 is hinged to the trunnions 202 on both sides of the bushing 201 through the notch 602. When the bracket 601 moves, it pulls the bushing 201 to swing as a whole, thereby causing the transmission shaft 204 inside the bushing 201 to tilt. After the transmission shaft 204 tilts, the meshing contact points of the spherical gears 206 fixed at both ends and the corresponding conical wheels move continuously along the generatrix of the conical surface. When the bracket 601 moves towards the driving conical wheel 508, the meshing point of the spherical gear 206 with the driving conical wheel 508 moves towards the large end of the conical surface, and the meshing point with the driven conical wheel 3 moves towards the small end of the conical surface. The device realizes the increase In the high-speed transmission, when the bracket 601 moves towards the driven conical wheel 3, the meshing point of the spherical gear 206 with the driving conical wheel 508 moves towards the small end of the conical surface, and the meshing point with the driven conical wheel 3 moves towards the large end of the conical surface. The device achieves speed reduction transmission. The device has a variable pitch tooth profile on the outer periphery of the spherical gear 206, and the tooth gap gradually expands from the end of the sphere to the middle. The driving conical wheel 508 and the driven conical wheel 3 also have a variable pitch tooth profile on their conical surfaces, and the tooth gap gradually expands from the small end of the conical surface to the large end. During the entire process of continuous movement of the meshing point, the spherical gear 206 and the conical wheel can achieve precise tooth pitch matching at any meshing position, forming a continuous conjugate meshing transmission, completely eliminating tooth interference, jamming, and wear problems, and achieving smooth stepless speed change. Finally, when the current is cut off by the electromagnetic coil 503, the electromagnetic attraction completely disappears, the reset spring 606 releases its elastic potential energy, and pushes the slider 603, bracket 601, core rod 512, sliding sleeve 509, and turntable 504 to reset as a whole. The turntable 504 drives the pressure plate 506 away from the pulley 502, and the two end faces are completely separated, the power transmission link is cut off, and at the same time the leaf spring 505 returns from the bent deformation state to the initial state. The whole device returns to the standby initial state and completes one working cycle. This device integrates the electromagnetic clutch mechanism, torque continuous transmission mechanism, continuously variable transmission mechanism, and reset mechanism inside the same housing 1. The electromagnetic clutch component 5 simultaneously realizes the two major functions of power on / off and speed change execution drive. By changing the magnitude of the current flowing through the electromagnetic coil 503, the electromagnetic attraction can be continuously and linearly adjusted, thereby precisely controlling the axial displacement and transmission ratio of the turntable 504. It can also be directly connected to the electronic control system of new energy vehicles to realize intelligent dynamic adjustment of the power transmission ratio, optimize vehicle power output and energy consumption performance, and improve the overall driving experience.

[0023] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the objective existence of infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other occasions without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A high-rigidity, buffer-integrated electromagnetic clutch for a new energy vehicle transmission, comprising a housing (1) and a transmission assembly (2), characterized in that, The housing (1) contains a transmission assembly (2), which includes a bushing (201). Trunnions (202) are symmetrically fixed on the outer walls of both sides of the bushing (201), and limit pins (203) are installed at both ends of the bushing (201). A transmission shaft (204) is rotatably installed inside the bushing (201), and annular grooves (205) are radially recessed at both ends of the transmission shaft (204). The annular grooves (205) cooperate with the limit pins (203) to achieve axial limiting of the transmission shaft (204). A spherical gear (206) is coaxially fixed at both ends of the transmission shaft (204), and a variable pitch tooth profile is provided on the outer circumferential surface of the spherical gear (206) distributed along the meridian direction of the spherical surface. The tooth gap of the variable pitch tooth profile of the spherical gear (206) gradually expands from the end of the sphere to the middle.

2. The high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmissions according to claim 1, characterized in that, A driven conical wheel (3) is rotatably mounted on one side of the housing (1), and an output shaft (4) is coaxially fixed at the middle of the large end of the driven conical wheel (3). The driven conical wheel (3) has variable pitch teeth distributed along the generatrix of the conical surface, and the tooth gap of the variable pitch teeth of the driven conical wheel (3) gradually increases from the small end of the conical surface to the large end of the conical surface.

3. The high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmission according to claim 2, characterized in that, An electromagnetic clutch assembly (5) is installed on the other side of the housing (1). The electromagnetic clutch assembly (5) includes a frame (501) fixedly installed on the outer wall of the other side of the housing (1). A pulley (502) is rotatably installed on the frame (501) via a bearing. An electromagnetic coil (503) is embedded in the groove inside the pulley (502). The electromagnetic coil (503) is fixed to the side wall of the frame (501).

4. The high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmissions according to claim 3, characterized in that, The electromagnetic clutch assembly (5) also includes a turntable (504) coaxially arranged with the pulley (502). A leaf spring (505) is installed on the side of the turntable (504) facing the pulley (502), and a pressure plate (506) is fixedly installed at the end of the leaf spring (505).

5. A high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmissions according to claim 4, characterized in that, The electromagnetic clutch assembly (5) also includes an input shaft (507) coaxially disposed inside the hole of the turntable (504). The key protrusion on the outer periphery of the input shaft (507) engages with the keyway in the hole of the turntable (504), and the turntable (504) can slide axially outside the input shaft (507) and maintain rotational linkage.

6. A high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmissions according to claim 5, characterized in that, The electromagnetic clutch assembly (5) also includes a drive conical wheel (508) coaxially fixed to the end of the input shaft (507). The drive conical wheel (508) and the driven conical wheel (3) have the same structure and are mirror-symmetrically arranged at both ends of the housing (1). The spherical gears (206) at both ends of the transmission shaft (204) respectively engage with the conical surfaces of the drive conical wheel (508) and the driven conical wheel (3) for transmission.

7. A high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmissions according to claim 6, characterized in that, The electromagnetic clutch assembly (5) also includes a sliding sleeve (509) disposed outside the turntable (504). The turntable (504) rotates inside the sliding sleeve (509), and the inner diameter of the hole in the sliding sleeve (509) is larger than the outer diameter of the input shaft (507), so that the sliding sleeve (509) only moves axially outside the input shaft (507) without rotating.

8. A high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmissions according to claim 7, characterized in that, The electromagnetic clutch assembly (5) further includes a connecting rod (510) fixedly connected to both ends of the outer side of the sliding sleeve (509). An end plate (511) is fixedly installed at the end of the connecting rod (510), and a core rod (512) is fixedly connected at the center of the end plate (511). The outer diameter of the core rod (512) is smaller than the inner diameter of the middle hole of the input shaft (507) and the drive conical wheel (508).

9. A high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmissions according to claim 8, characterized in that, The housing (1) has a built-in movable component (6), which includes a bracket (601) fixedly connected to the end of the core rod (512). The bracket (601) has notches (602) at both the upper and lower ends, and the bushings (201) on both sides are rotatably hinged to the inner wall of the notches (602) through the trunnion (202). The bracket (601) has sliders (603) fixedly installed at both the upper and lower ends, and the sliders (603) slide axially above the guide rod (604). The guide rod (604) has fixing plates (605) fixedly installed at both ends, and the fixing plates (605) are fixedly installed on the inner wall of the housing (1). The guide rod (604) has a reset spring (606) sleeved on one side for automatic reset of the device after the electromagnetic coil (503) is de-energized.

10. A high-rigidity buffer integrated electromagnetic clutch for new energy vehicle transmissions according to claim 9, characterized in that, When the bracket (601) moves along the common axis between the driving conical wheel (508) and the driven conical wheel (3), the transmission shaft (204) tilts, causing the meshing contact points of the spherical gears (206) at both ends of the transmission shaft (204) and the corresponding conical wheels to move continuously along the generatrix of the conical surface. The tooth profiles of the spherical gears (206) and the conical wheels maintain tooth pitch matching at any meshing contact point, realizing continuous conjugate meshing transmission and eliminating tooth interference.

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