WO2021032044A1 - Mécanisme de transfert de couple, dispositif de démarrage électrique, moteur et outil de jardin - Google Patents

Mécanisme de transfert de couple, dispositif de démarrage électrique, moteur et outil de jardin Download PDF

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Publication number
WO2021032044A1
WO2021032044A1 PCT/CN2020/109473 CN2020109473W WO2021032044A1 WO 2021032044 A1 WO2021032044 A1 WO 2021032044A1 CN 2020109473 W CN2020109473 W CN 2020109473W WO 2021032044 A1 WO2021032044 A1 WO 2021032044A1
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WO
WIPO (PCT)
Prior art keywords
transmission member
elastic buffer
peripheral surface
buffer member
transmission
Prior art date
Application number
PCT/CN2020/109473
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English (en)
Chinese (zh)
Inventor
郭宁
吴文波
Original Assignee
苏州科瓴精密机械科技有限公司
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Publication of WO2021032044A1 publication Critical patent/WO2021032044A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/14—Construction providing resilience or vibration-damping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/12—Toothed members; Worms with body or rim assembled out of detachable parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels

Definitions

  • the invention relates to the technical field of garden tools, in particular to a torque transmission mechanism, an electric starting device, an engine and a garden tool.
  • a small gasoline engine is usually equipped with an electric starter.
  • the electric starter usually includes a starter motor, a power transmission mechanism, and a clutch mechanism.
  • the power transmission mechanism includes a reduction gear box and an energy storage component. The output torque is transmitted to the energy storage component through the gearbox, and the energy storage component converts mechanical energy into potential energy. When the stored potential energy reaches the threshold, it is released to the clutch mechanism and rotates instantly.
  • the clutch mechanism engages with the crankshaft and drives the crankshaft to rotate to start gasoline engine. When the gasoline engine is started, the transmission between the clutch mechanism and the crankshaft is disconnected.
  • the reduction box is usually constructed as a gear set, which includes a gear 10' with a cavity capable of accommodating an energy storage component; the energy storage component is usually configured as a vortex spring 20' accommodated in the cavity of the gear 10' Inside the body, one end is connected with the gear 10', and the other end is connected with the ratchet 30' of the clutch mechanism.
  • the volute spring 20' is wound by a slender spring material. It has an outer free end far away from the spiral center and an inner free end close to the spiral center.
  • the inner free end is configured as a first hook 21', and the outer free end is configured It is the second hook 22', the inner circular surface of the ratchet 30' is provided with a first groove portion 31' for fixing the first hook 21', and the inner circular surface of the gear 10' is provided with a fixed second hook 22' The second groove 11'.
  • the disadvantage of the prior art is that a volute spring 20’ is used to buffer and transmit torque between the gear 10’ and the ratchet 30’.
  • the vortex spring 20’ has a complicated manufacturing process, high cost, large transmission vibration, and noise, and the gear 10’
  • the hooks connected to the volute spring 20' and between the volute spring 20' and the ratchet wheel 30' are easily broken.
  • safety protection is required during the assembly process, and auxiliary tooling is required during disassembly and assembly, which wastes manpower and is inefficient.
  • the purpose of the present invention is to provide a torque transmission mechanism, an electric starting device, an engine and a garden tool to solve the complicated manufacturing process and high cost caused by the use of vortex springs to transmit torque between the gear and the ratchet in the existing torque transmission mechanism.
  • the transmission vibration is large, the hook is easy to break, and the disassembly and assembly are laborious.
  • the present invention adopts the following technical solutions:
  • a torque transmission mechanism includes a first transmission member, a second transmission member, and an elastic buffer member located between the first transmission member and the second transmission member.
  • the elastic buffer member is configured to buffer and transmit the first transmission member.
  • the torque of a transmission member is the second transmission member.
  • the elastic buffer member is ring-shaped, the outer peripheral surface of the elastic buffer member forms an elastic pressing surface contact with the first transmission member, and the inner peripheral surface of the elastic buffer member is in contact with the first transmission member.
  • the second transmission member forms an elastic pressing surface contact.
  • a first transmission member cylinder is provided on the inner end surface of the first transmission member
  • a second transmission member ring is provided on the outer end surface of the second transmission member
  • the second transmission member The transmission member ring is sleeved on the first transmission member cylinder
  • the elastic buffer member is elastically extruded between the inner circular surface of the first transmission member and the outer circular surface of the second transmission member .
  • the geometric center and the rotation center of the first transmission member cylinder are both located on the axis X; the geometric center of the elastic buffer member is located on the axis Y, and the rotation center of the elastic buffer member is located On the axis X; the geometric center of the second transmission member ring is located on the axis Y, and the rotation center of the second transmission member ring is located on the axis X, where the axis X and the The axes Y are parallel to each other and arranged at intervals.
  • the eccentricity of the point on the axis Y with respect to the point on the axis X is 0.2-0.3.
  • the eccentricity of the point on the axis Y with respect to the point on the axis X is 0.28.
  • the ratio of the inner radius of the elastic buffer to the outer radius of the elastic buffer is 0.4-0.5.
  • the ratio of the inner radius of the elastic buffer to the outer radius of the elastic buffer is 0.46.
  • a plurality of grooves are arranged on the inner circular surface of the first transmission member at intervals along the circumferential direction of the inner circular surface of the first transmission member.
  • the end surface of the elastic buffer member is provided with a chamfer.
  • the outer peripheral surface of the elastic buffer member is clamped with the inner peripheral surface of the first transmission member, and the inner peripheral surface of the elastic buffer member is connected with the outer periphery of the second transmission member. Face-to-face snap connection.
  • the outer peripheral surface of the elastic buffer member is provided with a first clamping groove
  • the inner peripheral surface of the first transmission member is provided with a first clamping block
  • the first clamping block is clamped to The first card slot.
  • the first slot has a fan-shaped structure, and the width of the first slot gradually increases along the direction that the inner circumferential surface of the elastic buffer member points to the outer circumferential surface.
  • the inner peripheral surface of the elastic buffer member is provided with a second clamping groove
  • the outer peripheral surface of the second transmission member is provided with a second clamping block
  • the second clamping block is clamped to The second card slot.
  • the second slot has a fan-shaped structure, and the width of the second slot gradually increases along the direction in which the inner circumferential surface of the elastic buffer member points to the outer circumferential surface.
  • At least two of the first clamping slots are provided, and at least two of the first clamping slots are circumferentially evenly distributed on the outer peripheral surface of the elastic buffer member;
  • At least two second clamping grooves there are at least two second clamping grooves, and at least two second clamping grooves are evenly distributed on the inner circumferential surface of the elastic buffer member in a circumferential direction.
  • the material of the elastic buffer member is polyurethane elastomer.
  • An electric starting device includes the torque transmission mechanism described in any of the above solutions.
  • An electric starting engine includes the above electric starting device.
  • a garden tool includes the above-mentioned electric start engine.
  • the torque transmission mechanism provided by the present invention includes a first transmission member, a second transmission member, and an elastic buffer member located between the first transmission member and the second transmission member.
  • the elastic buffer member is used to transmit torque, so that the first transmission member During the torque transmission process, the elastic buffer member is temporarily buffered, and then the elastic buffer member transmits the torque to the second transmission member, which solves the problem of the hooks connecting the gear and the volute spring and between the volute spring and the ratchet in the prior art. It is easy to break, and the elastic buffer member has a simple manufacturing process, low cost, low transmission noise, and easy disassembly and assembly, without the need to install additional safety protection components.
  • Fig. 1 is a first structural diagram of a torque transmission mechanism in the prior art
  • Figure 2 is a second structural diagram of a torque transmission mechanism in the prior art
  • Figure 3 is an exploded view of the torque transmission mechanism according to the first embodiment of the present invention.
  • FIG. 4 is a front view of the torque transmission mechanism according to the first embodiment of the present invention.
  • Figure 5 is a cross-sectional view in the direction of A-A in Figure 4.
  • Figure 6 is an exploded view of the torque transmission mechanism according to the second embodiment of the present invention.
  • Figure 7 is a front view of the torque transmission mechanism according to the second embodiment of the present invention.
  • Figure 8 is a cross-sectional view in the direction of B-B in Figure 4.
  • FIG. 9 is a cross-sectional view of the assembly structure of the torque transmission mechanism according to the second embodiment of the present invention.
  • the first card block 101.
  • the first card block; 102. The first gap; 201.
  • the second card block; 302. The second gap.
  • connection should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrated ; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components.
  • connection may be fixedly connected, detachably connected, or integrated ; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components.
  • the "above” or “below” of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature.
  • the “below”, “below” and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the first feature has a lower level than the second feature.
  • the terms “upper”, “lower”, “left”, “right”, and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for ease of description and simplified operations , Rather than indicating or implying that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.
  • the terms “first” and “second” are only used to distinguish them in description and have no special meaning.
  • This embodiment provides a torque transmission mechanism, as shown in FIGS. 3-5, including a first transmission member 10, a second transmission member 30, and an elastic buffer member 20 located between the first transmission member 10 and the second transmission member 30 , And the elastic buffer member 20 respectively forms elastic pressing surface contact with the first transmission member 10 and the second transmission member 30 and generates static friction force, and the torque of the first transmission member 10 is transmitted to the second transmission member 30 through the static friction force.
  • the first transmission member 10 is a gear
  • the second transmission member 30 is a ratchet.
  • the transmission contact surfaces of the elastic buffer member 20 and the first transmission member 10 and the second transmission member 30 are enlarged, which solves the problem of the gap between the gear 10 and the vortex spring in the prior art.
  • the hook claw connected between the spring and the ratchet wheel 30 is easy to break, and the elastic buffer member 20 has a simple manufacturing process, low cost, low transmission noise, easy disassembly and assembly, and no need to install additional safety protection components.
  • the elastic buffer member 20 is annular, the outer peripheral surface of the elastic buffer member 20 forms an elastic pressing surface contact with the first transmission member 10, and the inner peripheral surface of the elastic buffer member 20 and the second transmission member 30 form elasticity. Squeeze surface contact.
  • the inner end surface of the first transmission member 10 is provided with a first transmission member cylinder 11
  • the outer end surface of the second transmission member 30 is provided with a second transmission member ring 31
  • the second transmission member ring 31 is sleeved on
  • the elastic buffer member 20 is elastically extruded between the inner circular surface of the first transmission member 10 and the outer circular surface of the second transmission member ring 31, using the inner circular surface of the first transmission member 10 and
  • the static friction force between the outer circular surface of the elastic buffer member 20 and the inner circular surface of the elastic buffer member 20 and the outer circular surface of the second transmission member ring 31 can transmit the torque of the first transmission member 10 to the second transmission member 30.
  • the two end surfaces of the elastic buffer member 20 may be in
  • the first transmission member 10, the elastic buffer member 20 and the second transmission member 30 are fastened and connected by a fastening component.
  • the fastening component includes a fixed post 41 and a bolt 43.
  • the first transmission component cylinder 11 is provided with a hollow cavity, and the fixed post 41 is provided In the hollow cavity of the first transmission member cylinder 11, a threaded hole is opened on the fixing column 41, and a through hole is opened on the end surface of the second transmission member 30 where the second transmission member ring 31 is provided.
  • the threaded hole is threaded to connect the first transmission member 10 and the second transmission member 30 tightly, and the end surface of the second transmission member 30 is pressed against the elastic buffer member 20 to fix the elastic buffer member 20.
  • the fastening assembly further includes a gasket 42 which is provided between the bolt head of the bolt 43 and the inner end surface of the second transmission member 30.
  • the material of the elastic buffer member 20 is polyurethane elastomer.
  • the polyurethane elastomer material has 50% compression and strong recovery elasticity.
  • the polyurethane elastomer material itself has pressure resistance, wear resistance, impact resistance, oil resistance, acid and alkali resistance, and The characteristics of tearing can meet the basic requirements of electric starting devices, and its hardness can be selected from 25-98 degrees Shore. It can be selected according to the extension test of the use space, load, etc., and the most suitable application can be synthesized. Effect.
  • the material of the elastic buffer member 20 can be Uniglue, which is also called polyurethane PU elastomer, which is a new type of material with good strength, small compression deformation, and between plastic and rubber. It has the rigidity of plastic and the elasticity of rubber.
  • the material of the elastic buffer member 20 is not limited to polyurethane elastomer, and may also be a common elastomer material, such as a rubber material.
  • the end surface of the elastic buffer member 20 is provided with a chamfer to facilitate the assembly of the elastic buffer member 20.
  • the inner circular surface of the first transmission member 10 is provided with a plurality of grooves 12 at intervals along its circumferential direction.
  • the arrangement of the grooves 12 can increase the inner circular surface of the first transmission member 10 and the outer surface of the elastic buffer member 20. The friction force between the circular surfaces further increases the torque transmission between the first transmission member 10 and the second transmission member 30.
  • the geometric center and the center of rotation of the first transmission member cylinder 11 are located on the axis X; the geometric center of the elastic buffer member 20 is located on the axis Y, and the rotation center of the elastic buffer member 20 is located on the axis X
  • the geometric center of the second transmission member ring 31 is located on the axis Y, and the rotation center of the second transmission member ring 31 is located on the axis X, wherein the axis X and the axis Y are parallel to each other and arranged at intervals.
  • the inner circular surface of the first transmission member 10 is eccentrically arranged with respect to the outer circular surface, that is, the wall thickness of the first transmission member 10 gradually increases from one point in the circumferential direction to the opposite point, and the first transmission member cylinder 11 and The outer circular surface of the first transmission member 10 is concentric; the inner circular surface and the outer circular surface of the elastic buffer member 20 are arranged concentrically, that is, the elastic buffer member 20 is arranged with equal wall thickness along the circumferential direction; the inner circle of the second transmission member ring 31
  • the surface is eccentrically arranged with respect to the outer circular surface, that is, the wall thickness of the second transmission member ring 31 along the circumferential direction gradually increases to the opposite point, and the wall thickness of the second transmission member ring 31 is the thickest point of the first transmission member
  • the thinnest point of the wall thickness of 10 is directly opposite, and the thinnest point of the wall thickness of the second transmission member ring 31 is directly opposite to the thickest point of the first transmission member 10.
  • the outer circular surface of the elastic buffer member 20 is eccentrically arranged with respect to the inner circular surface, the inner circular surface and the outer circular surface of the first transmission member 10 are arranged concentrically, and the outer circular surface of the second transmission member ring 31 is opposite to each other.
  • the inner circular surface of the elastic buffer member 20 is eccentrically arranged with respect to the outer circular surface, the inner circular surface of the first transmission member 10 is eccentrically arranged with respect to the outer circular surface, and the second transmission member ring 31 The inner circular surface and the outer circular surface are arranged concentrically.
  • L1 is the rotation center of the elastic buffer 20 to elastic
  • L2 is the minimum distance from the rotation center of the elastic buffer member 20 to the outer circle of the elastic buffer member 20
  • r is the inner circle radius of the elastic buffer member 20.
  • the eccentricity is positively correlated with the friction generated by the movement.
  • the effect of the eccentricity on the performance of the elastic buffer member 20 mainly depends on the friction to be transmitted, and the friction to be transmitted depends on the size of the external load. As long as the friction is ensured
  • the force can be stably greater than the load to meet the design requirements.
  • the eccentricity e and the radius ratio k jointly determine the structural performance of the elastic buffer member 20.
  • the starting success rate of the electric starting device is relatively high.
  • the test results are as follows: the actual starting experiment is carried out 1220 times, one start is successful 1201 times, there are 19 failures, and the second start after the failure is all Success means that the first start success rate is >98%, and the second start success rate is 100%.
  • This embodiment also provides an electric starting device including the torque transmission mechanism described above.
  • This embodiment also provides an electric starter engine including the electric starter described above.
  • This embodiment also provides a garden tool including the above-mentioned electric start engine.
  • the garden tools can be lawn mowers, lawn mowers, brush cutters, tillers, pruners, chainsaws, high branch shears, suction blowers, and the like.
  • the torque transmission mechanism includes a first transmission member 10, a second transmission member 30, and a second transmission member 30 between the first transmission member 10 and the second transmission member 30.
  • the elastic buffer member 20 wherein the inner circumferential surface of the first transmission member 10 and the outer circumferential surface of the elastic buffer member 20, and the outer circumferential surface of the second transmission member 30 and the inner circumferential surface of the elastic buffer member 20 are clamped
  • the first transmission member 10 transmits torque
  • the first transmission member 10 first transmits the torque to the elastic buffer member 20, and the elastic buffer member 20 performs short-term buffering, and then the elastic buffer member 20 transfers the torque
  • the transmission to the second transmission member 20 can effectively solve the problem of easy breakage of the hooks between the gear 10 and the volute spring and between the volute spring and the ratchet 30 in the prior art, and the above-mentioned elastic buffer member 20 has simple manufacturing process and cost. Low, low transmission noise, easy to disassemble and assemble, no need to install additional safety protection
  • the above-mentioned elastic buffer member 20 has a ring structure, and in this embodiment, a first slot 201 is provided on the outer peripheral surface of the elastic buffer member 20.
  • a first clamping block 101 is provided on the inner circumferential surface of the transmission member 10, and the first clamping block 101 can be clamped to the first clamping slot 201 to realize the clamping connection between the first transmission member 10 and the elastic buffer member 20, so that The torque of the first transmission member 10 is transmitted to the elastic buffer member 20.
  • the inner peripheral surface of the first transmission member 10 is provided with the same number of first clamping blocks 101 as the first clamping slots 201.
  • the first slot 201 has a fan-shaped structure, and the width of the first slot 201 gradually increases along the direction from the inner circumferential surface of the elastic buffer member 20 to the outer circumferential surface.
  • the shape of the first locking block 101 matches the first locking slot 201.
  • the arrangement of this structure can make the contact area between the first locking block 101 and the first locking slot 201 larger, thereby making the torque transmission more stable, and making the elastic buffer member 20 have a better short-term buffering effect.
  • a first gap 102 is formed between the first card block 101 and the first card slot 201 that are clamped to each other.
  • the first gap 102 may be formed in the first card slot. Between the end of the block 101 and the bottom of the first card slot 201, it can also be formed between the side wall of the first card block 101 and the side wall of the first card slot 201, or between the side wall of the first card block 101. Between the end and the bottom of the first card slot 201 and between the side wall of the first card block 101 and the side wall of the first card slot 201. It may also be formed between the outer circumferential surface of the elastic buffer member 20 and the inner circumferential surface of the first transmission member 10.
  • a second locking groove 202 is provided on the inner peripheral surface of the elastic buffer member 20, and correspondingly a second locking block 301 is provided on the inner peripheral surface of the second transmission member 30, and the second locking block 301 is locked It is connected to the second slot 202 to realize the snap connection between the elastic buffer member 20 and the second transmission member 30.
  • at least two second card slots 202 can be provided (three in FIG. 6), and the two second card slots 202 are evenly distributed in the circumferential direction on the inner peripheral surface of the elastic buffer member 20, correspondingly ,
  • the outer peripheral surface of the second transmission member 20 is provided with the same number of second clamping blocks 301 as the second clamping slots 202.
  • the torque can be transmitted to the second transmission member 30 to achieve The torque transmission between the first transmission member 10 and the second transmission member 20 is achieved.
  • the second slot 202 also has a fan-shaped structure, and the width of the second slot 202 gradually increases along the direction that the inner peripheral surface of the elastic buffer member 20 points to the outer peripheral surface. In this way, the contact area between the second clamping block 301 and the second clamping slot 202 is larger, and the torque transmission effect is increased. Moreover, the structure of the second slot 202 can also make the engagement between the elastic buffer member 20 and the second transmission member 30 more stable. As shown in FIG. 9, in this embodiment, a second gap 302 is formed between the second clamping block 301 and the second clamping slot 202 that are clamped to each other. The second gap 302 may be formed at the end of the second clamping block 301.
  • the second card slot 202 Between the bottom portion and the bottom of the second card slot 202, it can also be formed between the side wall of the second card block 301 and the side wall of the second card slot 202, and can also be formed between the end of the second card block 301 and the second card slot 202. Between the bottoms of the two card slots 202 and between the side walls of the second card block 301 and the side walls of the second card slot 202. It may also be formed between the inner peripheral surface of the elastic buffer member 20 and the outer peripheral surface of the second transmission member 30. The second gap 302 can provide space for the elastic expansion and contraction of the elastic buffer member 20 and further improve the elastic buffer effect of the elastic buffer member 20.
  • the material of the above-mentioned elastic buffering member 20 is polyurethane elastomer, preferably it can be Uniglue, which is also called polyurethane PU elastomer, which has good strength, small compression deformation, and is between plastic and A new type of material between rubber, which has the rigidity of plastic and the elasticity of rubber.
  • This embodiment also provides an electric starting device including the torque transmission mechanism described above.
  • This embodiment also provides an electric starter engine including the electric starter described above.
  • This embodiment also provides a garden tool including the above-mentioned electric start engine.
  • the garden tool may be a lawn mower, a lawn mower, a brush cutter, a tiller, a pruner, a chain saw, a high branch shear, a blower and the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

L'invention concerne un mécanisme de transfert de couple, un dispositif de démarrage électrique, un moteur et un outil de jardin. Le mécanisme de transfert de couple comprend un premier élément de transmission (10), un second élément de transmission (30), et un élément d'amortissement élastique (20) situé entre le premier élément de transmission (10) et le second élément de transmission (30). L'élément d'amortissement élastique (20) est configuré pour amortir le couple du premier élément de transmission (10) et pour transférer celui-ci au second élément de transmission (30). Le couple est transféré à l'aide de l'élément d'amortissement élastique (20), de telle sorte que le couple du premier élément de transmission (10) est temporairement amorti par l'élément d'amortissement élastique (20) dans le processus du transfert de couple, puis le couple est transféré au second élément de transmission (30) à l'aide de l'élément d'amortissement élastique (20), de façon à résoudre le problème de l'art antérieur qui est que des crochets reliés entre un engrenage et un ressort en spirale et entre le ressort en spirale et une roue à rochet se cassent facilement. En outre, l'élément d'amortissement élastique a un procédé de fabrication simple, un faible coût, un faible bruit de transfert, et est facile à assembler et à démonter, sans la nécessité d'installer en plus un composant de protection de sécurité.
PCT/CN2020/109473 2019-08-19 2020-08-17 Mécanisme de transfert de couple, dispositif de démarrage électrique, moteur et outil de jardin WO2021032044A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910765273.8A CN112392937B (zh) 2019-08-19 2019-08-19 一种扭矩传递机构、电起动装置、引擎和园林工具
CN201910765273.8 2019-08-19

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WO2021032044A1 true WO2021032044A1 (fr) 2021-02-25

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