WO2023279999A1 - 自锁机构、马达及线性致动器 - Google Patents
自锁机构、马达及线性致动器 Download PDFInfo
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- WO2023279999A1 WO2023279999A1 PCT/CN2022/101494 CN2022101494W WO2023279999A1 WO 2023279999 A1 WO2023279999 A1 WO 2023279999A1 CN 2022101494 W CN2022101494 W CN 2022101494W WO 2023279999 A1 WO2023279999 A1 WO 2023279999A1
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- Prior art keywords
- friction ring
- self
- locking mechanism
- locking
- mounting
- Prior art date
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Images
Classifications
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/20—Self-tightening brakes
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/06—Bands, shoes or pads; Pivots or supporting members therefor for externally-engaging brakes
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
Definitions
- the invention relates to the field of self-locking mechanisms, in particular to self-locking mechanisms, motors and linear actuators.
- the principle of torsion spring self-locking is similar.
- the material of the torsion spring seat is POM100P.
- the friction coefficient will be reduced after the torsion spring seat runs for a period of time, resulting in a decline in self-locking performance.
- the technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose a self-locking mechanism with stable self-locking performance.
- the self-locking mechanism includes a friction ring and a mounting seat that is fixed relative to the friction ring. There is a gap on the friction ring, and the friction ring is sleeved on the rotating body that needs to be braked.
- the installation part of the friction ring is installed, and the installation part presses the friction ring in the direction of the notch to apply braking force to the revolving body.
- the self-locking mechanism further includes a limiting structure for limiting the circumferential rotation of the friction ring relative to the mounting seat.
- the position-limiting structure includes a slot provided on the mounting part and a protruding edge provided on the friction ring, and the protruding edge is clamped into the slot.
- both ends of the friction ring are provided with convex edges that are snapped into the slots.
- one of the two ends of the friction ring is provided with the convex edge.
- the outer circumference of the friction ring is provided with a plurality of convex edges at intervals, and the installation part is provided with a plurality of locking grooves corresponding to the plurality of convex edges.
- the installation part defines an installation groove for accommodating the friction ring, and the installation part is further provided with a buckle for limiting the friction ring in the installation groove.
- the installation seat includes an annular base and a plurality of brackets arranged at intervals in the circumferential direction of the base, and the plurality of brackets are connected through a chassis to form the installation part.
- the motor includes a drive shaft and the above-mentioned self-locking mechanism, and the self-locking mechanism is used for braking the drive shaft.
- Linear actuators including motors as described above.
- the invention discloses a self-locking mechanism, the mounting seat and the friction ring are kept fixed, the friction ring is set on the rotating body, a certain distance is left between the two ends of the friction ring, that is, the gap defined by the two ends of the friction ring is defined,
- the inner diameter of the friction ring can change under the external force.
- the friction ring shrinks to the direction of the gap to reduce its inner diameter, and the contact with the rotating body is tight, so that the friction ring can be rotated
- Apply force on the body (action force refers to the sliding friction force generated between the rotating body and the friction ring when it rotates) to hinder the rotation of the rotating body, so that the rotating body can quickly stop rotating.
- action force refers to the sliding friction force generated between the rotating body and the friction ring when it rotates
- the rotating body can quickly stop rotating.
- the friction ring There is a static self-locking force between the rotating body, so that dynamic and static self-locking can be formed, so that the self-locking mechanism
- the mounting seat and the friction ring are two independent structures.
- the self-locking performance of the self-locking mechanism will be affected after the friction ring is worn out.
- the normal self-locking performance of the self-locking mechanism can be restored by replacing the friction ring, which is more convenient to use;
- the inner diameter of the friction ring can also be easily enlarged to facilitate its installation on the rotary body, and then the mounting seat and the friction ring are assembled.
- the existing self-locking The mechanism, its friction part and the rotating body are usually interference fit. During the assembly process of the two, the rotating body will wear and burrs will appear. During the braking process of the self-locking mechanism, there will be relatively large Loud noise, but the self-locking mechanism disclosed in the present application can well protect the revolving body during the assembly process, so that the problem of excessive noise will not occur.
- the self-locking mechanism further includes a limiting structure, which is used to limit the circumferential rotation of the friction ring relative to the mounting seat.
- a limiting structure which is used to limit the circumferential rotation of the friction ring relative to the mounting seat.
- the friction ring can keep relatively still with the mounting seat, and cannot rotate synchronously with the revolving body.
- the revolving body rotates normally, there is sliding friction between the two.
- the sliding Friction will stop the rotating body quickly.
- the position-limiting structure includes a slot provided on the installation part and a protruding edge provided on the friction ring, and the protruding edge is clamped into the slot. After the convex edge is snapped into the card slot, the rotation of the friction ring can be restricted.
- the matching method of the convex edge and the card slot is relatively simple. It only needs to align the convex edge with the card slot and apply pressure to complete the fit without increasing The assembly of the self-locking mechanism is difficult, and the cooperation between the card slot and the convex edge has a positioning function.
- the inner diameter of the friction ring can be directly reduced, thereby ensuring the close contact between the friction ring and the rotating body; if the card slot is set On the friction ring, the thickness of the friction ring will be uneven. Since the friction ring needs to be able to undergo a certain deformation, the fit between the groove and the convex edge cannot be an interference fit, and there will be a certain gap between the two. The gap, the friction ring will be deformed under the action of friction, especially the part where the card slot is set, where the thickness and thin deformation will be greater, so it is easy to break.
- both ends of the friction ring are provided with flanges that are snapped into the slots. After the convex edge is matched with the card groove, it will limit the degree of deformation of the connection position between the friction ring and the convex edge in the direction of the notch. Since the two ends of the friction ring are provided with convex edges, the variation of the gap width when the rotary body is rotating is limited.
- one of the two ends of the friction ring is provided with the convex edge.
- the convex edge After the convex edge is matched with the card groove, it will limit the degree of deformation of the joint position of the friction ring and the convex edge in the direction of the notch. Therefore, the deformation of the end with the convex edge at the two ends of the friction ring will be limited, and the other end will be more It is easy to deform in the direction away from the notch.
- the rotating body rotates toward the end with the convex edge, the inner diameter of the friction ring changes little, and the friction force generated between the friction ring and the rotating body is large.
- the rotating body faces the other side When the direction turns, the inner diameter of the friction ring changes greatly, and the friction force generated is small, so that the one-way self-locking of the rotating body can be realized.
- the outer circumference of the friction ring is provided with a plurality of convex edges at intervals, and the installation part is provided with a plurality of locking grooves corresponding to the plurality of convex edges.
- Each convex edge can limit the deformation of the friction ring. Through multiple convex edges set at intervals, the overall deformation of the friction ring is limited, and the width change of the notch when the rotary body rotates is reduced, so that a better self-improvement can be maintained. Locking performance, and two-way self-locking of the rotary body.
- the installation part defines an installation groove for accommodating the friction ring
- the installation part is also provided with a buckle for limiting the friction ring in the installation groove.
- the displacement of the friction ring in the axial direction of the rotating body can be limited, so as to avoid the separation of the friction ring from the mounting seat and affect the braking performance; and the friction ring is limited by the buckle,
- the assembly process of the friction ring and the mounting seat can be facilitated, and the buckle does not need to be operated at the same time during the assembly process, and the assembly can be completed only by pressing the friction ring toward the installation groove.
- the installation seat includes an annular base and a plurality of brackets arranged at intervals in the circumferential direction of the base, and the plurality of brackets are connected through a chassis to form the installation part.
- the invention also discloses a motor.
- the motor outputs its own power through the drive shaft, and the motor has the self-locking mechanism disclosed above, which can generate braking force acting on the drive shaft.
- the drive shaft rotates normally, the drive shaft can overcome the The friction between it and the friction ring, when the motor needs to stop, the braking force of the self-locking mechanism can make the drive shaft stop quickly, so that the accuracy of the motor can be improved.
- the present invention also discloses a linear actuator.
- the motor disclosed in the above-mentioned linear actuator is arranged in the linear actuator, and the motor provides power in the linear direction for the linear actuator.
- the linear actuator is used in the lifting device. If the lifting device With the linear actuator of the present application inside, when there is a load on the lifting device, under the action of the self-locking force of the self-locking mechanism, the lifting device can remain stable, and it is not easy to retreat under the action of external force, and the lifting Height can also be precisely controlled.
- Fig. 1 is the structural representation A of self-locking mechanism in the embodiment of the present invention
- Fig. 2 is the schematic structural diagram B of the self-locking mechanism in the embodiment of the present invention.
- Fig. 3 is the structural representation C of self-locking mechanism in the embodiment of the present invention.
- Fig. 4 is a schematic structural diagram D of a self-locking mechanism in an embodiment of the present invention.
- Fig. 5 is a schematic structural view of the mounting seat in the embodiment of the present invention.
- Fig. 6 is a structural schematic diagram of a motor in an embodiment of the present invention.
- Figure 7 is an exploded view of the motor in the embodiment of the present invention.
- Fig. 8 is a schematic structural diagram of an end cap in an embodiment of the present invention.
- Mounting seat 200 base 201, bracket 202, chassis 203, mounting part 210, mounting groove 220, buckle 230, shrapnel 231, hook 232, slot 240;
- first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
- plural means two or more, unless otherwise clearly defined.
- a first feature being “on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
- “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
- "Below”, “under” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
- the embodiment of the present invention discloses a self-locking mechanism, including a friction ring 100 and a mounting seat 200 that is fixed relative to the friction ring 100.
- a notch 110 on the friction ring 100 there is a notch 110 on the friction ring 100, and the friction ring 100 is set on the rotating body that needs to be braked.
- the mounting base 200 defines a mounting portion 210 for mounting the friction ring 100 , and the mounting portion 210 presses the friction ring 100 toward the notch 110 to apply a braking force to the rotating body.
- the mounting seat 200 and the friction ring 100 remain fixed, the friction ring 100 is set on the rotating body, and a certain distance is left between the two ends of the friction ring, that is, it is limited by the two ends of the friction ring 100.
- the notch 110, the notch 110 enables the inner diameter of the friction ring 100 to change under the external force, under the extrusion of the mounting seat 200, the friction ring 100 shrinks to the notch 110 to reduce its inner diameter, and the contact between the rotating body tight, so that the friction ring 100 can exert a force on the rotating body (the force refers to the sliding friction force generated between the rotating body and the friction ring 100 when the rotating body rotates), so as to hinder the rotation of the rotating body, so that the rotating body Can quickly stop the rotation, when the revolving body remains stationary, there is a static self-locking force between the friction ring 100 and the revolving body, so that dynamic and static self-locking can be formed, so that the self-locking mechanism has stable self-locking performance; and the notch 110 can also be used for oil storage to increase the service life of the friction ring 100 and reduce the degree of wear of the friction ring 100;
- the mounting seat 200 and the friction ring 100 are two independent structures.
- the wear and tear of the friction ring 100 will affect the self-locking performance of the self-locking mechanism.
- the material of the mounting seat 200 is preferably PEEK or PPS, and the material of the friction ring 100 is preferably PEEK.
- the mounting seat 200 and the friction ring 100 have good high temperature resistance, so that the self-locking mechanism will not be damaged due to its own temperature rise during work. Reduce friction coefficient and maintain stable self-locking performance;
- the friction ring 100 is provided with a notch 110, the inner diameter of the friction ring 100 can also be easily enlarged to facilitate its installation on the rotating body, and then the mounting seat 200 and the friction ring 100 are assembled.
- the friction part and the rotating body are usually in an interference fit.
- the rotating body will be worn and burrs will appear.
- the self-locking mechanism disclosed in the present application can well protect the revolving body during the assembly process, so that there will be no problem of excessive noise.
- the installation portion 210 defines an installation groove 220 for accommodating the friction ring 100, the installation groove 220 is a circular groove, and the bottom wall of the central part of the installation groove 220 is provided through to facilitate the rotation body to pass through the installation seat 200, the installation portion 210 There is also a buckle 230 arranged along the circumferential direction of the installation groove 220, the buckle 230 can limit the friction ring 100, and limit it in the installation groove 220, so that it cannot move in the axial direction of the rotor, so as to avoid The friction ring 100 is separated from the mounting seat 200 to affect braking performance.
- the buckle 230 is set to be integrally formed with the mounting base 200, so that when the friction ring 100 is installed on the mounting base 200, it is not necessary to remove the buckle 230 and then install the friction ring 100, but only to insert the friction ring 100 into the mounting groove.
- the assembly can be completed by squeezing in the direction of 220, which can facilitate the assembly process.
- the friction ring 100 is severely worn and needs to be replaced, it is also relatively convenient to disassemble.
- the buckle 230 includes an elastic piece 231 capable of deforming in the radial direction of the installation groove 220 and a hook 232 provided at the end of the elastic piece 231.
- the friction ring 100 is aligned with the installation groove 220 and then pushed towards the installation groove 220 , in this process, the friction ring 100 pushes the hook 232 to deform the shrapnel 231 away from the installation groove 220.
- the friction ring 100 enters the installation groove 220, the shrapnel 231 and the hook 232 are reset, and the hook 232 is stuck.
- the friction ring 100 limits its axial displacement in the installation groove 220 .
- the buckle 230 is an L-shaped buckle block, which is not easily deformed, has a higher circumferential limit strength on the friction ring 100 , and has better self-locking performance.
- FIG. 1 based on the above-mentioned embodiments, in another embodiment of the present invention, the specific structure of the position-limiting structure is specifically illustrated.
- the position-limiting structure includes a locking groove 240 disposed on the mounting portion 210 and a protruding edge 120 disposed on the friction ring 100 , and the protruding edge 120 is engaged in the engaging groove 240 .
- the rotation of the friction ring 100 can be restricted.
- the cooperation between the convex edge 120 and the card slot 240 is relatively simple. It is only necessary to align the convex edge 120 with the card slot 240 and apply pressure. The matching can be completed without increasing the difficulty of assembling the self-locking mechanism, and the cooperation between the card groove 240 and the convex edge 120 has a positioning effect. close contact between them.
- the thickness of the friction ring will be uneven. Since the friction ring needs to be able to undergo a certain deformation, the matching method between the card groove and the convex edge cannot For interference fit, there will be a certain gap between the two, and the friction ring will be deformed under the action of friction, especially in the part where the card slot is set, where the thickness and deformation will be greater, so it is easy to break Case.
- the self-locking mechanism can realize two-way self-locking of the revolving body.
- both ends of the friction ring 100 are provided with a convex edge 120 that snaps into the card groove 240 .
- the degree of deformation in the direction of the notch 110 because the two ends of the friction ring 100 are provided with flanges 120, thus limiting the amount of variation in the width of the notch 110 when the rotating body rotates, avoiding the friction between the rotating body and the friction ring 100 Under force action, the width of the notch 110 is too large to reduce the magnitude of the braking force, and both ends of the friction ring 100 are provided with convex edges 120, no matter whether the rotating body is rotating forward or reverse, the magnitude of the braking force received is the same , so that the two-way self-locking of the rotary body can be realized.
- a plurality of ribs 120 are arranged at intervals on the outer circumference of the friction ring 100, and a plurality of locking grooves 240 are arranged on the mounting part 210 corresponding to the plurality of ribs 120.
- each convex edge 120 can limit the amount of deformation of the friction ring 100, through a plurality of convex edges 120 arranged at intervals, the overall deformation amount of the friction ring 100 is limited, so that whether the rotating body is forward or reverse, the notch 110 The degree of deformation will not change too much, and the two-way self-locking of the rotary body is realized.
- the self-locking mechanism can also realize one-way self-locking of the revolving body.
- a convex edge 120 is provided at one of the two ends of the friction ring 100, so that the degree of deformation of this end will be limited, and the other end is likely to be deformed under the frictional force. That is, the two ends of the friction ring 100 form a free end and a fixed end. When the rotating body rotates toward the fixed end, the free end of the friction ring 100 will approach the fixed end under the action of friction, thereby increasing the braking force.
- the mounting seat 200 includes an annular base 201 and a plurality of brackets 202 arranged at intervals in the circumferential direction of the base 201, and the plurality of brackets 202 are connected by a chassis 203 to form a mounting portion 210, there is a certain distance between two adjacent brackets 202, so that the brackets 202 can be offset by a certain angle relative to the base 201, and can better cooperate with the revolving body, and the mounting seat 200 with such a structure allows the base 201 to have a certain The amount of deformation can facilitate the installation of the mounting base 200 on the device.
- the present invention also discloses a motor, including a drive shaft 300 and a housing 310, the rotational power generated by the motor is output by the drive shaft 300, and the above-mentioned self-locking mechanism is provided in the motor for locking the drive shaft.
- 300 is self-locking.
- the end of the shell 310 is fixedly equipped with an end cover 320, and a plurality of protruding blocks 330 are arranged inside the end cover 320, and a locking groove 340 is formed between two adjacent locking blocks 330, and the mounting part 210 is locked into the locking position.
- the friction ring 100 is sleeved on the drive shaft 300, when the drive shaft 300 rotates normally, the drive shaft 300 can overcome the friction between it and the friction ring 100
- the braking force of the self-locking mechanism can make the drive shaft 300 stop rotating quickly, which can improve the accuracy and sensitivity of the motor.
- the present invention also discloses a linear actuator, which includes the above-mentioned motor and the telescopic column driven by the motor.
- Linear actuators can generate power in a linear direction, and drive objects to move in a linear direction through telescopic columns.
- linear actuators are used in lifting devices to control lifting. Lifting devices such as lifting tables and lifting beds, through the self-locking mechanism set in the motor Mechanism, when the lifting device is loaded, it is not easy to fall back under the action of external force, so as to keep the structure of the lifting device stable. At the same time, due to the sensitive motor control, the linear actuator can control the lifting distance of the lifting device more accurately.
- the expansion and contraction speed of the conventional telescopic column is 35mm/s, and the lead of the internal screw is 10+10. Since the lead of the screw is small, the method of core + torsion spring + screw is conventionally used to realize self-locking. If you increase the lifting speed of the conventional telescopic column to 80mm/s-150mm/s, or increase the load of the conventional telescopic column to 4 times the static self-locking, if you still use the core + torsion spring + screw rod for self-locking, Due to the acceleration of the lifting speed, the speed of the motor will increase and the noise will increase. If the lead of the screw is changed to 20+20, the load test of the whole table will drop due to the decrease of the self-locking force of the screw.
- the motor in the linear actuator adopts the self-locking mechanism of the present application. When the overall load of the lifting device is loaded, the lead of the screw rod is increased or the torsion spring is canceled, so that the entire table can be lifted and self-locked.
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Abstract
Description
Claims (10)
- 自锁机构,其特征在于,包括摩擦环和相对所述摩擦环保持固定的安装座,所述摩擦环上设有缺口,所述摩擦环套装在需要制动的回转体上,所述安装座上限定出用于安装所述摩擦环的安装部,所述安装部向缺口方向挤压摩擦环以向回转体施加制动力。
- 根据权利要求1所述的自锁机构,其特征在于,所述自锁机构还包括限位结构,用于限制所述摩擦环相对所述安装座的周向转动。
- 根据权利要求2所述的自锁机构,其特征在于,所述限位结构包括设置在所述安装部上的卡槽和设置在所述摩擦环上的凸边,所述凸边卡入所述卡槽内。
- 根据权利要求3所述的自锁机构,其特征在于,所述摩擦环的两端均设有卡入卡槽内的凸边。
- 根据权利要求3所述的自锁机构,其特征在于,所述摩擦环的两端中的其中一端设有所述凸边。
- 根据权利要求3所述的自锁机构,其特征在于,所述摩擦环的外周间隔设置多个凸边,所述安装部对应多个凸边设置多个卡槽。
- 根据权利要求1至6中任一项所述的自锁机构,其特征在于,所述安装部限定出用于容纳所述摩擦环的安装槽,所述安装部上还设有将所述摩擦环限位在安装槽内的卡扣。
- 根据权利要求1至6中任一项所述的自锁机构,其特征在于,所述安装座包括环形的底座和间隔设置在所述底座周向上的多个支架,所述多个支架之间通过底盘相连以形成所述安装部。
- 马达,其特征在于,包括驱动轴和权利要求1至8中任一项所述的自锁机构,所述自锁机构用于对所述驱动轴进行制动。
- 线性致动器,其特征在于,包括权利要求9所述的马达。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US18/286,885 US20240200626A1 (en) | 2021-07-07 | 2022-06-27 | Self-locking mechanism, motor, and linear actuator |
EP22836753.8A EP4306480A1 (en) | 2021-07-07 | 2022-06-27 | Self-locking mechanism, motor, and linear actuator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110765776.2 | 2021-07-07 | ||
CN202110765776.2A CN113651271B (zh) | 2021-07-07 | 2021-07-07 | 马达自锁机构及线性致动器 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023279999A1 true WO2023279999A1 (zh) | 2023-01-12 |
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