CN216589683U - Bidirectional torque brake and motor - Google Patents
Bidirectional torque brake and motor Download PDFInfo
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- CN216589683U CN216589683U CN202123273409.5U CN202123273409U CN216589683U CN 216589683 U CN216589683 U CN 216589683U CN 202123273409 U CN202123273409 U CN 202123273409U CN 216589683 U CN216589683 U CN 216589683U
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Abstract
The utility model provides a two-way torque brake and motor, two-way torque brake includes: the magnetic clutch comprises a stator, a first hub, a second hub, a first friction piece, a second friction piece, a first magnetic adsorption structure, a second magnetic adsorption structure, a first baffle and a second baffle; when the stator is electrified, the braking friction force of the first friction piece on the first hub can be reduced or relieved, and the braking friction force of the second friction piece on the second hub can be reduced or relieved. According to the utility model discloses can both form the effect of braking torque to the wheel hub of the axial both sides of stator, form two-way torque brake for the torque of stopper increases for the torsion of unilateral is multiple, and the size that can need not increase the stopper also need not improve braking torque through raising power, consequently can not lead to stopper power to rise, can not lead to the stopper temperature rise to increase.
Description
Technical Field
The utility model relates to the technical field of electric machines, concretely relates to two-way torque brake and motor.
Background
The electromagnetic brake is an important basic part, integrates mechanical, electrical and electronic technologies into a whole, and is mainly used for precise control and braking of a rotating mechanism (such as a motor device and the like).
The brake is installed in servo motor, and servo motor need realize with the help of the brake when carrying out emergency braking, and if the lower then rotatory motor of brake braking force can't in time be braked, produces some dangerous actions, therefore the brake need have enough big braking torque just can guarantee that the motor brakes fast. In the prior art, the torsion of the brake is improved by increasing the spring force through increasing the number of springs or a plurality of brakes are used for working together, but the attraction and release time of the brake is changed while the spring force is increased, so that the wire diameter and the number of turns of a stator coil are required to be changed to improve the electromagnetic force, the power of the brake is higher, and the temperature rise of the brake is increased; the use of a plurality of brakes working together not only occupies a large space inside the motor but also doubles the power, affecting the overall performance of the motor.
Because electromagnetic braking among the prior art adopts through increasing the spring number or using a plurality of brakers for promoting braking torsion, but it is when promoting stopper torsion, often can have to increase the stopper size by a wide margin and can make stopper power rise to can lead to stopper temperature rise technical problem such as increase, consequently the utility model discloses research and design a two-way torque brake and motor.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the present invention lies in overcoming the electromagnetic braking ware among the prior art and increasing the stopper size and can make the defect that stopper power rose when promoting stopper torsion to a two-way torque brake and motor are provided.
In order to solve the above problem, the utility model provides a two-way torque brake, it includes:
the brake device comprises a stator, a first hub, a second hub, a first friction piece, a second friction piece, a first magnetic adsorption structure, a second magnetic adsorption structure, a first baffle and a second baffle, wherein the first magnetic adsorption structure, the first friction piece and the first baffle are sequentially arranged on one axial side of the stator, the second magnetic adsorption structure, the second friction piece and the second baffle are sequentially arranged on the other axial side of the stator, the first friction piece can act on the first hub to form brake friction force, and the second friction piece can act on the second hub to form brake friction force; when the stator is electrified, the braking friction force of the first friction piece on the first hub can be reduced or relieved, and the braking friction force of the second friction piece on the second hub can be reduced or relieved.
In some embodiments, when the stator is powered on, electromagnetic force can be generated on the first magnetic attraction structure and the second magnetic attraction structure respectively, so that the friction force between the first friction piece and the first hub is reduced or 0, and the friction force between the second friction piece and the second hub is reduced or 0, and when the stator is powered off, the attraction on the first magnetic attraction structure and the second magnetic attraction structure can be released respectively, so that the first friction piece acts on the first hub to form friction braking force, and the second friction piece acts on the second hub to form friction braking force.
In some embodiments, the stator is an annular structure, and includes a stator outer ring located on a radially outer side, a stator inner ring located on a radially inner side, and a coil located between the stator outer ring and the stator inner ring, where the coil, when energized, can generate an electromagnetic force to attract the first magnetic attraction structure at one axial end thereof, and attract the second magnetic attraction structure at the other axial end thereof.
In some embodiments, the stator inner ring, the stator outer ring, and the coil are injection molded as a unitary structure.
In some embodiments, the first friction member is located between the first magnetic adsorption structure and the first baffle plate, and the first friction member can be clamped by the first baffle plate or a gap is formed between the first magnetic adsorption structure and the first friction member through the movement of the first magnetic adsorption structure;
the second friction piece is located between the second magnetic adsorption structure and the second baffle plate, and the second friction piece can be clamped by the second baffle plate or a gap is formed between the second magnetic adsorption structure and the second friction piece through the movement of the second magnetic adsorption structure.
In some embodiments, the first baffle plate is fixedly connected with the stator, and the first magnetic adsorption structure is movable between the stator and the first baffle plate; the second baffle is fixedly connected with the stator, and the second magnetic adsorption structure can move between the stator and the second baffle.
In some embodiments, the stator further comprises a first threaded fastener and a second threaded fastener, a first screw of the first threaded fastener passes through the first magnetic adsorption structure and is fixed on the stator outer ring in a threaded manner, and the first magnetic adsorption structure is sleeved on the first screw and can move along the direction of the first screw; and a second screw of the second threaded fastener penetrates through the second magnetic adsorption structure and is fixed on the stator outer ring in a threaded manner, and the second magnetic adsorption structure is sleeved on the second screw and can move along the direction of the second screw.
In some embodiments, the magnetic adsorption device further comprises a first column sleeve and a second column sleeve, wherein the first column sleeve and the second column sleeve are both hollow cylinders, the first column sleeve is arranged on the first screw rod and located at a position between the first magnetic adsorption structure and the first baffle, and the second column sleeve is arranged on the second screw rod and located at a position between the second magnetic adsorption structure and the second baffle.
In some embodiments, the first and second sleeves are both made of a rigid material.
In some embodiments, the stator is further provided with a first elastic component and a second elastic component, the first elastic component can generate a first elastic thrust on the first magnetic adsorption structure, and the second elastic component can generate a second elastic thrust on the second magnetic adsorption structure;
when the coil is powered off, a first elastic thrust generated by the first elastic component abuts against the first magnetic adsorption structure and the first friction piece so as to generate a braking friction force on the first hub; meanwhile, a second elastic thrust generated by the second elastic component enables the second magnetic adsorption structure and the second friction piece to be abutted so as to generate a braking friction force on the second hub;
when the coil is electrified, the coil can generate magnetic attraction force on the first magnetic adsorption structure, after the first elastic thrust is overcome, a gap is generated between the first magnetic adsorption structure and the first friction piece, and the braking friction force on the first hub is reduced or is 0; meanwhile, the coil can generate magnetic attraction force on the second magnetic adsorption structure when being electrified, and after the second elastic thrust is overcome, the second magnetic adsorption structure and the second friction piece generate a gap, so that the braking friction force on the second hub is reduced, or the braking friction force on the second hub is 0.
In some embodiments, the stator outer ring is provided with a first groove, the first elastic member is disposed in the first groove, the stator outer ring is further provided with a second groove, and the second elastic member is disposed in the second groove; and/or the first elastic component and the second elastic component are both springs.
In some embodiments, the stator outer ring and the stator inner ring are both of magnetically permeable metal material, and the first friction member and the second friction member are both made of a composite material including at least one of phenolic resin, metal fibers, and glass fibers.
In some embodiments, the minimum distance between the coil and the first axial end face of the stator is equal to the minimum distance between the coil and the second axial end face of the stator;
the axial length of the stator outer ring is equal to that of the stator inner ring;
the axial length of the coil is smaller than the axial length of the stator outer ring.
In some embodiments, the first magnetically attractive structure is a first armature and the second magnetically attractive structure is a second armature; and/or the first magnetic adsorption structure and the second magnetic adsorption structure are both ring-shaped structures.
In some embodiments, the first friction member is an annular plate-shaped structure and is formed as a first friction plate sleeved on the outer periphery of the first hub, and the second friction member is an annular plate-shaped structure and is formed as a second friction plate sleeved on the outer periphery of the second hub.
The utility model provides a pair of two-way torque brake and motor have following beneficial effect:
1. the utility model discloses a arrange first magnetic adsorption structure on one side of the axial of stator, first friction spare with first baffle, can produce magnetic attraction and make and reduce or remove when the stator is circular telegram first friction spare acts on the braking frictional force on first wheel hub, cancel the electromagnetic force when the stator is cut off the power supply, then first friction spare forms the braking action to first wheel hub, arrange second magnetic adsorption structure on the other side of the axial of stator, second friction spare and second baffle, can produce magnetic attraction and make and reduce or remove when the stator is circular telegram the braking frictional force that second friction spare acts on the second wheel hub, cancel the electromagnetic force when the stator is cut off the power supply, then second friction spare forms the braking action to second wheel hub, consequently can both form the effect of braking torque to the wheel hub of the axial both sides of stator, form two-way torque brake, the torsion of the brake is multiplied relative to the torsion of a single side, the size of the brake does not need to be increased, the braking torsion does not need to be improved by improving the power, and therefore the power of the brake cannot be increased, and the temperature rise of the brake cannot be increased.
2. The utility model discloses a make the components of a whole that can function independently with the stator ring, divide into interior ring and outer ring, the coil is installed between inner ring and outer loop, can let stator both sides all can install parts such as armature, friction disc and limiting plate like this, can make full use of coil opposite side's magnetic field like this for the magnetic field of coil both sides can both obtain fine reason, reaches the purpose that two friction discs braked together, and the braking force can be than the big of friction disc among the prior art.
Drawings
Fig. 1 is a sectional structure view of the bidirectional high torque brake of the present invention.
The reference numerals are represented as:
100. a stator; 1. a stator outer ring; 2. a first friction member; 3. a first baffle plate; 4. a stator inner ring; 5. a first hub; 6. a first column jacket; 7. a first magnetic adsorption structure; 8. a second magnetic adsorption structure; 9. a second column sleeve; 10. a second hub; 11. a second baffle; 12. a second friction member; 13. a coil; 141. a first elastic member; 142. a second elastic member; 15. an injection molded part; 161. a first threaded fastener; 162. a second threaded fastener.
Detailed Description
As shown in fig. 1, the utility model provides a two-way torque brake, it includes:
the brake device comprises a stator 100, a first hub 5, a second hub 10, a first friction piece 2, a second friction piece 12, a first magnetic adsorption structure 7, a second magnetic adsorption structure 8, a first baffle plate 3 and a second baffle plate 11, wherein the first magnetic adsorption structure 7, the first friction piece 2 and the first baffle plate 3 are sequentially arranged on one axial side of the stator 100, the second magnetic adsorption structure 8, the second friction piece 12 and the second baffle plate 11 are sequentially arranged on the other axial side of the stator 100, the first friction piece 2 can act on the first hub 5 to form brake friction force, and the second friction piece 12 can act on the second hub 10 to form brake friction force; when the stator 100 is energized, the braking friction force of the first friction member 2 acting on the first hub 5 can be reduced or released, and the braking friction force of the second friction member 12 acting on the second hub 10 can be reduced or released.
The utility model discloses a arrange first magnetic adsorption structure on one side of the axial of stator, first friction spare with first baffle, can produce magnetic attraction and make and reduce or remove when the stator is circular telegram first friction spare acts on the braking frictional force on first wheel hub, cancel the electromagnetic force when the stator is cut off the power supply, then first friction spare forms the braking action to first wheel hub, arrange second magnetic adsorption structure on the other side of the axial of stator, second friction spare and second baffle, can produce magnetic attraction and make and reduce or remove when the stator is circular telegram the braking frictional force that second friction spare acts on the second wheel hub, cancel the electromagnetic force when the stator is cut off the power supply, then second friction spare forms the braking action to second wheel hub, consequently can both form the effect of braking torque to the wheel hub of the axial both sides of stator, form two-way torque brake, the torsion of the brake is multiplied relative to the torsion of a single side, the size of the brake does not need to be increased, the braking torsion does not need to be improved by improving the power, and therefore the power of the brake cannot be increased, and the temperature rise of the brake cannot be increased.
In some embodiments, when the stator 100 is powered on, electromagnetic force can be generated on the first magnetic attraction structure 7 and the second magnetic attraction structure 8 respectively, so that the friction force between the first friction member 2 and the first hub 5 is reduced or 0, and the friction force between the second friction member 12 and the second hub 10 is reduced or 0, and when the stator 100 is powered off, the attraction on the first magnetic attraction structure 7 and the second magnetic attraction structure 8 can be released respectively, so that the first friction member 2 acts on the first hub 5 to form friction braking force, and the second friction member 12 acts on the second hub 10 to form friction braking force. The utility model can generate electromagnetic force by electrifying the stator, further adsorb the first magnetic adsorption structure on the stator, and reduce the contact with the first friction piece, thereby reducing the friction force between the first friction piece and the first wheel hub, and reducing the braking force, for example, when being used for starting; the same stator is electrified to generate electromagnetic force, and the second magnetic adsorption structure can be adsorbed to the stator, so that the braking force between the second friction piece and the second hub is reduced, for example, when the brake device is used for starting; when the stator is powered off, the electromagnetic force is removed, so that the friction force is recovered, and the processes of braking the rotation of the motor hub and removing the braking are effectively finished.
In some embodiments, the stator 100 is a ring-shaped structure, and includes a stator outer ring 1 located at the radially outer side, a stator inner ring 4 located at the radially inner side, and a coil 13 located between the stator outer ring 1 and the stator inner ring 4, where when the coil 13 is energized, the coil is capable of generating an electromagnetic force to attract the first magnetic attraction structure 7 at one axial end thereof, and attract the second magnetic attraction structure 8 at the other axial end thereof. The utility model discloses a make the stator ring into the components of a whole that can function independently, divide into interior ring and outer ring, the coil is installed between inner ring and outer loop, can let the stator both sides all can install parts such as armature, friction disc and limiting plate like this, can make full use of coil opposite side's magnetic field like this for the magnetic field of coil both sides can both obtain fine reason, reaches the purpose that two friction discs braked together, and the braking force can be than the big of friction disc among the prior art.
In some embodiments, the stator inner ring 4, the stator outer ring 1 and the coils 13 are injection molded as a unitary structure. The stator outer ring can be fixed to a position such as the inner wall of the casing by injection molding the stator inner ring 4, the stator outer ring 1 and the coils 13 as one body to form an integral structure.
The installation mode of the brake is that a coil 13 which is wound is sleeved on the stator inner ring 4, and the coil is positioned in the middle of the stator inner ring 4, so that the distances from the coil 13 to the left end face and the right end face of the stator inner ring 4 are equal (the electromagnetic force exerted on the left armature and the right armature is equal). The axial height of the brake stator outer ring 1 (preferably a stator outer ring) is equal to the axial height of the stator inner ring 4 (preferably a stator inner ring) (so that the armature can be in contact with the inner ring and the outer ring, and no air gap exists between the armature and the inner ring when the coil is electrified, so that the magnetic conductivity is better), the inner diameter of the brake stator outer ring 1 is slightly larger than the outer diameter of the coil 13, and the stator inner ring 4 sleeved with the coil 13 and the stator outer ring 1 are molded into a whole. The stator outer ring 1 is provided with a plurality of counter bores for placing springs (a first elastic component or a second elastic component). Then, a first magnetic adsorption structure 7 (preferably a first armature) and a second magnetic adsorption structure 8 (preferably a second armature) are sequentially assembled (the lifting braking force is that two friction plates exist, the armature is only a movable part, and braking force is generated when the armature pushes the friction plates against a baffle), the first friction member 2 and the second friction member 12, the first column sleeve 6 and the second column sleeve 9, the first baffle 3 and the second baffle 11 (the main function of the baffles is that the armature and the baffles clamp the friction plates to generate friction force, and on the other hand, the friction plates are prevented from axially falling out). The sleeve is a through hole and the screws (first threaded fastener 161 and second threaded fastener 162) pass through the sleeve to secure/confine the parts within the confines of the baffle (the sleeve is a hollow cylinder that controls the distance between the baffle and the outer ring of the stator, and then the screws pass through the sleeve to lock the baffle to the stator). All parts are a whole without discrete components. And a gap (0.05-0.19mm) is reserved between the stator outer ring 1 and the first magnetic adsorption structure 7 and the second magnetic adsorption structure 8.
In some embodiments, the first friction member 2 is located between the first magnetic attraction structure 7 and the first baffle 3, and the first friction member 2 can be clamped by the first baffle 3 or a gap can be formed between the first magnetic attraction structure 7 and the first friction member 2 through the movement of the first magnetic attraction structure 7;
the second friction piece 12 is located between the second magnetic adsorption structure 8 and the second baffle 11, and the second friction piece 12 can be clamped by the second magnetic adsorption structure 8 and the second baffle 11 or a gap is formed between the second magnetic adsorption structure 8 and the second friction piece 12 through the movement of the second magnetic adsorption structure 8.
The utility model discloses a through above-mentioned means can be when first magnetic adsorption structure 7 move to with first baffle 3 with first friction member 2 presss from both sides tightly, the inner periphery of first friction member 2 with the periphery of first wheel hub 5 produces the braking frictional force of relative slip, when first magnetic adsorption structure 7 move to with have the clearance between first friction member 2, the inner periphery of first friction member 2 with first wheel hub 5 is integrative to be rotated, do not produce the braking frictional force;
when the second magnetic attraction structure 8 moves to clamp the second friction piece 12 with the second baffle 11, the inner circumference of the second friction piece 12 and the outer circumference of the second hub 10 generate a braking friction force sliding relatively, and when the second magnetic attraction structure 8 moves to have a gap with the second friction piece 12, the inner circumference of the second friction piece 12 and the second hub 10 rotate integrally without generating the braking friction force.
In some embodiments, the first baffle 3 is fixedly connected to the stator 100, and the first magnetic attraction structure 7 is movable between the stator 100 and the first baffle 3; the second baffle 11 is fixedly connected with the stator 100, and the second magnetic adsorption structure 8 is movable between the stator 100 and the second baffle 11. The utility model discloses a first baffle and second baffle respectively with between the stator fixed connection to keep the motionless of baffle, and first magnetic adsorption structure and second magnetic adsorption structure can remove for baffle and stator, thereby form the braking in order to press from both sides the tight friction disc, press from both sides the tight braking in order to cancel the friction disc cancellation.
In some embodiments, a first threaded fastener 161 (preferably a screw) and a second threaded fastener 162 (preferably a screw) are further included, a first screw rod of the first threaded fastener 161 is threaded and fixed on the stator outer ring 1 through the first magnetic adsorption structure 7, and the first magnetic adsorption structure 7 is sleeved on the first screw rod and can move along the direction of the first screw rod; the second screw of the second threaded fastener 162 passes through the second magnetic adsorption structure 8 and is fixed on the stator outer ring 1 in a threaded manner, and the second magnetic adsorption structure 8 is sleeved on the second screw and can move along the direction of the second screw. The utility model discloses still can be fixed first baffle to the stator through first and second threaded fastener (the nut of first threaded fastener is pressed on first baffle), and first screw rod forms the guide that allows the motion of first threaded fastener, can also be fixed the second baffle to the stator (the nut of second threaded fastener is pressed on the second baffle), and the second screw rod forms the guide that allows the motion of second threaded fastener.
In some embodiments, the magnetic adsorption type screw driver further comprises a first column sleeve 6 and a second column sleeve 9, wherein the first column sleeve 6 and the second column sleeve 9 are both hollow cylinders, the first column sleeve 6 is sleeved on the first screw and located at a position between the first magnetic adsorption structure 7 and the first baffle 3, and the second column sleeve 9 is sleeved on the second screw and located at a position between the second magnetic adsorption structure 8 and the second baffle 11. The utility model discloses a setting of first column casing and second column casing, can control the distance between first baffle and the stator outer loop, then first screw passes through the column casing and locks the baffle on the stator, prevent to be close too and lead to the condition that first friction disc was crushed between first baffle and the first magnetic adsorption structure, can control the distance between second baffle and the stator outer loop, then the second screw passes through the column casing and locks the baffle on the stator, prevent to be close too and lead to the condition that the second friction disc was crushed between second baffle and the second magnetic adsorption structure.
In some embodiments, the first jacket 6 and the second jacket 9 are both made of a rigid material. First column cover and second column cover through the rigid material makes can play the effect to first magnetic adsorption structure butt, prevent to support first column cover and take place to warp to the effect to second magnetic adsorption structure butt, prevent to support the second column cover and take place to warp.
In some embodiments, a first elastic component 141 (preferably a spring) and a second elastic component 142 (preferably a spring) are further disposed on the stator 100, the first elastic component 141 is capable of generating a first elastic thrust to the first magnetic attraction structure 7, and the second elastic component 142 is capable of generating a second elastic thrust to the second magnetic attraction structure 8;
when the coil is powered off, a first elastic thrust generated by the first elastic component 141 abuts the first magnetic attraction structure 7 and the first friction piece 2 to generate a braking friction force on the first hub 5; meanwhile, a second elastic thrust generated by the second elastic component 142 abuts the second magnetic attraction structure 8 and the second friction piece 12 to generate a braking friction force on the second hub 10;
when the coil is powered on, the coil 13 can generate a magnetic attraction force on the first magnetic adsorption structure 7, and after the first elastic thrust is overcome, a gap is generated between the first magnetic adsorption structure 7 and the first friction piece 2, so that the braking friction force on the first hub 5 is reduced, or the braking friction force on the first hub 5 is 0; meanwhile, when the coil 13 is powered on, magnetic attraction force can be generated on the second magnetic adsorption structure 8, after the second elastic thrust is overcome, a gap is generated between the second magnetic adsorption structure 8 and the second friction piece 12, and the braking friction force on the second hub 10 is reduced or the braking friction force on the second hub 10 is 0.
This is the utility model discloses a further preferred structural style can produce thrust to first magnetic adsorption structure through first elastic component to can promote first magnetic adsorption structure to pressing from both sides tight first friction piece through first elastic thrust when removing magnetic attraction, realize the embodiment of braking force, can produce thrust to second magnetic adsorption structure through second elastic component, can promote second magnetic adsorption structure to pressing from both sides tight second friction piece through second elastic thrust when removing magnetic attraction, realize the embodiment of braking force.
In some embodiments, the stator outer ring 1 is provided with a first groove, the first elastic member 141 is disposed in the first groove, the stator outer ring 1 is further provided with a second groove, and the second elastic member 142 is disposed in the second groove; and/or both the first elastic member 141 and the second elastic member 142 are springs. The utility model can hold the first elastic component through the first groove arranged on the outer ring of the stator, one end of the first elastic component can extend out and abut against the first magnetic adsorption structure and realize elastic thrust, and can hold the second elastic component through the second groove arranged on the outer ring of the stator, one end of the second elastic component can extend out and abut against the second magnetic adsorption structure and realize elastic thrust; both elastic members are preferably spring structures.
In some embodiments, the stator outer ring 1 and the stator inner ring 4 are both made of a magnetically conductive metal material, preferably low carbon steel with high magnetic conductivity, and the first friction member 2 and the second friction member 12 are both made of a composite material including at least one of phenolic resin, metal fibers, and glass fibers. The stator outer ring and the stator inner ring of the utility model are made of magnetic conductive metal materials, which can realize the transmission and communication of magnetic lines of force and generate electromagnetic force acting on the first armature and the second armature; the two friction pieces are both made of composite materials including at least one of phenolic resin, metal fibers and glass fibers, so that large friction force can be provided, and braking can be effectively realized. The balance is common metal material.
In some embodiments, the minimum distance between the coil 13 and the first axial end face of the stator is equal to the minimum distance between the coil 13 and the second axial end face of the stator;
the axial length of the stator outer ring 1 is equal to that of the stator inner ring 4;
the axial length of the coil 13 is smaller than the axial length of the stator outer ring 1.
The minimum distance between the coil and the two axial end surfaces of the stator is equal, so that the electromagnetic force applied to the left armature and the right armature is equal, and the braking uniformity is improved; the axial heights of the stator outer ring and the stator inner ring are equal, so that the armature is in contact with the inner ring and the outer ring, and no air gap exists between the armature and the inner ring when the coil is electrified, so that the magnetic conductivity is better; the axial length of the coil is smaller than that of the outer ring of the stator, so that the coil can be effectively protected.
In some embodiments, the first magnetic adsorption structure 7 is a first armature, and the second magnetic adsorption structure 8 is a second armature; and/or the first magnetic adsorption structure 7 and the second magnetic adsorption structure 8 are both ring-shaped structures. This is the preferred structural style of the first magnetic adsorption structure and the second magnetic adsorption structure of the present invention, the armature is attracted by the fixed electromagnet, and after moving, the armature and the electromagnet form a closed magnetic circuit, and this moving ferromagnetic body is called as the armature.
In some embodiments, the first friction member 2 is an annular plate structure and is formed as a first friction plate, and is disposed on the outer periphery of the first hub 5, and the second friction member 12 is an annular plate structure and is formed as a second friction plate, and is disposed on the outer periphery of the second hub 10. The friction member is preferably in the form of a friction plate, and is rotatable together with the hub, and when braking, the friction member is fixed to generate a sliding friction force with the hub, thereby generating braking.
The utility model also provides a motor, it includes preceding arbitrary two-way torque brake.
In the working mode, the coil 13 is electrified, the brake stator generates electromagnetic force to attract the first armature and the second armature, the first armature and the second armature respectively compress the spring, so that the gap between the armature and the stator becomes 0, the distance between the armature and the baffle plate is increased, the first friction plate and the second friction plate are released, and therefore the motor shaft can drive the first hub 5 and the second hub 10 to rotate freely.
The coil 13 is de-energized and the brake stator loses electromagnetic force and the front face of the spring is expanded by the compression amount, restoring the spring force and pushing the first armature and the second armature to press against the first damper 3 and the second damper 11, respectively. The first friction piece 2 is clamped between the first armature and the first baffle 3, the second friction piece 12 is clamped between the second armature and the second baffle 11, a friction plate is contacted with the second armature under the action of a spring force to generate friction force, namely braking force, a motor rotating shaft drives the first hub 5 and the second hub 10 to stop rotating under the action of the braking force of the first friction piece 2 and the second friction piece 12 respectively (a hub inner ring is assembled on a shaft, a hub outer ring is of a gear structure, an inner circle of the friction plate is also of a gear structure, and the hub and the friction plate are matched through a gear).
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (16)
1. A two-way torque brake, characterized by: the method comprises the following steps:
the brake device comprises a stator (100), a first hub (5), a second hub (10), a first friction piece (2), a second friction piece (12), a first magnetic adsorption structure (7), a second magnetic adsorption structure (8), a first baffle plate (3) and a second baffle plate (11), wherein the first magnetic adsorption structure (7), the first friction piece (2) and the first baffle plate (3) are sequentially arranged on one axial side of the stator (100), the second magnetic adsorption structure (8), the second friction piece (12) and the second baffle plate (11) are sequentially arranged on the other axial side of the stator (100), the first friction piece (2) can act on the first hub (5) to form brake friction force, and the second friction piece (12) can act on the second hub (10) to form brake friction force; when the stator (100) is electrified, the braking friction force of the first friction piece (2) on the first hub (5) can be reduced or relieved, and the braking friction force of the second friction piece (12) on the second hub (10) can be reduced or relieved.
2. The two-way torque brake of claim 1, wherein:
when the stator (100) is electrified, electromagnetic force can be generated on the first magnetic adsorption structure (7) and the second magnetic adsorption structure (8) respectively, so that the friction force between the first friction piece (2) and the first hub (5) is reduced or is 0, meanwhile, the friction force between the second friction piece (12) and the second hub (10) is reduced or is 0, when the stator (100) is powered off, the adsorption on the first magnetic adsorption structure (7) and the second magnetic adsorption structure (8) can be relieved respectively, so that the first friction piece (2) acts on the first hub (5) to form friction braking force, and meanwhile, the second friction piece (12) acts on the second hub (10) to form friction braking force.
3. The two-way torque brake of claim 2, wherein:
the stator (100) is of an annular structure and comprises a stator outer ring (1) located on the radial outer side, a stator inner ring (4) located on the radial inner side and a coil (13) located between the stator outer ring (1) and the stator inner ring (4), wherein the coil (13) can generate electromagnetic force when being electrified, so that the first magnetic adsorption structure (7) is adsorbed at one axial end of the coil, and the second magnetic adsorption structure (8) is adsorbed at the other axial end of the coil.
4. The two-way torque brake of claim 3, wherein:
the stator inner ring (4), the stator outer ring (1) and the coil (13) are molded into a whole structure.
5. The two-way torque brake of claim 3, wherein:
the first friction piece (2) is positioned between the first magnetic adsorption structure (7) and the first baffle (3), and the first friction piece (2) can be clamped with the first baffle (3) or a gap is formed between the first magnetic adsorption structure (7) and the first friction piece (2) through the movement of the first magnetic adsorption structure (7);
the second friction piece (12) is located between the second magnetic adsorption structure (8) and the second baffle (11), and the second friction piece (12) can be clamped with the second baffle (11) or a gap is formed between the second magnetic adsorption structure (8) and the second friction piece (12) through the movement of the second magnetic adsorption structure (8).
6. The two-way torque brake of claim 5, wherein:
the first baffle plate (3) is fixedly connected with the stator (100), and the first magnetic adsorption structure (7) can move between the stator (100) and the first baffle plate (3); the second baffle (11) is fixedly connected with the stator (100), and the second magnetic adsorption structure (8) can move between the stator (100) and the second baffle (11).
7. The two-way torque brake of claim 6, wherein:
the stator structure further comprises a first threaded fastener (161) and a second threaded fastener (162), a first screw of the first threaded fastener (161) penetrates through the first magnetic adsorption structure (7) and is fixed on the stator outer ring (1) in a threaded mode, and the first magnetic adsorption structure (7) is sleeved on the first screw and can move along the direction of the first screw; and a second screw of the second threaded fastener (162) penetrates through the second magnetic adsorption structure (8) and is fixed on the stator outer ring (1) in a threaded manner, and the second magnetic adsorption structure (8) is sleeved on the second screw and can move along the direction of the second screw.
8. The two-way torque brake of claim 7, wherein:
still include first post cover (6) and second post cover (9), first post cover (6) with second post cover (9) are the hollow circular cylinder, first post cover (6) cover is established on the first screw rod and is located first magnetic adsorption structure (7) with position between first baffle (3), second post cover (9) cover is established on the second screw rod and is located second magnetic adsorption structure (8) with position between second baffle (11).
9. The two-way torque brake of claim 8, wherein:
the first column sleeve (6) and the second column sleeve (9) are both made of rigid materials.
10. The two-way torque brake of claim 3, wherein:
the stator (100) is further provided with a first elastic component (141) and a second elastic component (142), the first elastic component (141) can generate a first elastic thrust to the first magnetic adsorption structure (7), and the second elastic component (142) can generate a second elastic thrust to the second magnetic adsorption structure (8);
when the coil is powered off, a first elastic thrust generated by the first elastic component (141) abuts the first magnetic adsorption structure (7) and the first friction piece (2) to generate a braking friction force on the first hub (5); meanwhile, a second elastic thrust generated by the second elastic component (142) abuts the second magnetic adsorption structure (8) and the second friction piece (12) to generate a braking friction force on the second hub (10);
when the coil is electrified, the coil (13) can generate magnetic attraction force on the first magnetic adsorption structure (7), after the first elastic thrust is overcome, a gap is generated between the first magnetic adsorption structure (7) and the first friction piece (2), and the braking friction force on the first hub (5) is reduced or is 0; meanwhile, when the coil (13) is electrified, magnetic attraction force can be generated on the second magnetic adsorption structure (8), a gap is generated between the second magnetic adsorption structure (8) and the second friction piece (12) after the second elastic thrust is overcome, and the braking friction force of the second hub (10) is reduced or is 0.
11. The two-way torque brake of claim 10, wherein:
a first groove is formed in the stator outer ring (1), the first elastic component (141) is arranged in the first groove, a second groove is further formed in the stator outer ring (1), and the second elastic component (142) is arranged in the second groove; and/or the first elastic component (141) and the second elastic component (142) are both springs.
12. The two-way torque brake of claim 3, wherein:
the stator outer ring (1) and the stator inner ring (4) are both made of magnetic conductive metal materials, the first friction piece (2) and the second friction piece (12) are both made of composite materials, and the composite materials comprise at least one of phenolic resin, metal fibers and glass fibers.
13. The two-way torque brake of claim 3, wherein:
the minimum distance between the coil (13) and the first axial end face of the stator is equal to the minimum distance between the coil (13) and the second axial end face of the stator;
the axial length of the stator outer ring (1) is equal to the axial length of the stator inner ring (4);
the axial length of the coil (13) is smaller than the axial length of the stator outer ring (1).
14. The bi-directional torque brake of any one of claims 1-13, wherein:
the first magnetic adsorption structure (7) is a first armature, and the second magnetic adsorption structure (8) is a second armature; and/or the first magnetic adsorption structure (7) and the second magnetic adsorption structure (8) are both ring-shaped structures.
15. The two-way torque brake of any one of claims 1-13, wherein:
the first friction piece (2) is of an annular sheet structure and is formed into a first friction piece which is sleeved on the periphery of the first hub (5), and the second friction piece (12) is of an annular sheet structure and is formed into a second friction piece which is sleeved on the periphery of the second hub (10).
16. An electric machine characterized by: comprising the two-way torque brake of any one of claims 1-15.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123273409.5U CN216589683U (en) | 2021-12-22 | 2021-12-22 | Bidirectional torque brake and motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123273409.5U CN216589683U (en) | 2021-12-22 | 2021-12-22 | Bidirectional torque brake and motor |
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| CN216589683U true CN216589683U (en) | 2022-05-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151470A (en) * | 2021-12-22 | 2022-03-08 | 珠海格力电器股份有限公司 | Bidirectional torque brake and motor |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151470A (en) * | 2021-12-22 | 2022-03-08 | 珠海格力电器股份有限公司 | Bidirectional torque brake and motor |
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