CN115095619A

CN115095619A - Electromagnetic brake, brake motor and electric vehicle

Info

Publication number: CN115095619A
Application number: CN202210885667.9A
Authority: CN
Inventors: 李激初; 林杰煌
Original assignee: Guangdong Lofandi Intelligent Technology Co ltd
Current assignee: Guangdong Lofandi Intelligent Technology Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-09-23

Abstract

The invention provides an electromagnetic brake, which comprises a frame body, an electric control telescopic component, a control component and a brake piece, wherein the frame body is provided with a first support plate and a second support plate; the electric control telescopic assembly is arranged on the frame body; the control assembly is rotatably and movably arranged on the frame body; the brake piece is arranged on the control component; the telescopic rod of the electric control telescopic assembly is arranged corresponding to the control assembly to provide driving force to enable the control assembly to rotate, so that the control assembly moves linearly to drive the brake piece to be combined with or separated from the rotor of the motor. Meanwhile, the invention also provides a brake motor and an electric vehicle. Compared with the prior art, the electromagnetic brake, the brake motor and the electric vehicle provided by the invention are more stable and smooth during braking and unlocking, and can better ensure successful unlocking.

Description

Electromagnetic brake, brake motor and electric vehicle

Technical Field

The invention relates to the technical field of motor braking, in particular to an electromagnetic brake, a brake motor and an electric vehicle.

Background

The electromagnetic brake is a mechanical device for stopping or decelerating a moving part in machinery, and has the advantages of compact structure, simplicity in operation, sensitivity in response, reliability in use, easiness in control and the like. The electromagnetic brake is mainly used in a matched manner with the motor, is usually designed and installed at the tail of the motor, and locks a rotor in the motor through the electromagnetic brake, so that the motor is braked.

The electromagnetic brake part in the prior art mainly comprises an electric control telescopic part and a brake part, and when the electromagnetic brake part is controlled, a control electric signal is applied to the electric control telescopic part, so that a corresponding magnetic field is generated in the electric control telescopic part, the telescopic rod of the electric control telescopic part stretches to drive the brake part to move, the brake part is combined with or separated from a rotor of a motor, and the motor is braked and unlocked. The electric control telescopic piece drives the brake piece to move, so that braking and unlocking can be faster.

However, in the electromagnetic brake member in the prior art, the brake member is directly driven to linearly move through the linear movement of the electric control telescopic member, so that the braking and unlocking of the motor are realized. The braking and unlocking processes are not stable and smooth enough, and when a rotor of the motor is loaded and has resistance, the unlocking difficulty can be caused, even the situation that the unlocking cannot be successfully carried out can be caused, and the normal use of the motor is influenced.

Disclosure of Invention

The electromagnetic brake device aims at solving the technical problems that in an electromagnetic brake device in the prior art, the brake piece is directly driven to linearly move through the linear movement of the electric control telescopic piece, so that the braking and unlocking of a rotor of a motor are realized, the braking and unlocking processes are not stable and smooth enough, and even when resistance exists on the rotor of the motor, the situation that the unlocking cannot be successfully performed can occur, and the normal use of the motor is influenced. The invention provides an electromagnetic brake, which is characterized in that a control component is arranged between an electric control telescopic piece and a brake piece, the telescopic rod of the electric control telescopic piece can drive the control component to rotate, and the control component can convert the rotation motion into linear motion, so that the brake piece is driven to linearly move, the braking and unlocking of a rotor of a motor are realized, the braking and unlocking processes are more stable and smooth, the successful unlocking of the motor is better ensured, and the normal use of the motor is better ensured.

An electromagnetic brake comprises a frame body, an electric control telescopic component, a control component and a brake piece;

the electric control telescopic assembly is arranged on the frame body;

the control assembly is rotatably and movably arranged on the frame body;

the brake piece is arranged on the control component;

the telescopic rod of the electric control telescopic component is arranged corresponding to the control component to provide driving force to enable the control component to rotate, so that the control component can move linearly to drive the brake piece to be combined with or separated from the rotor of the motor.

Preferably, the control assembly comprises a control mechanism and a control rod;

the control mechanism is rotatably and movably arranged on the frame body;

the control rod is connected with the control mechanism and can move linearly under the driving of the control mechanism;

the brake piece is arranged on the control rod;

the telescopic rod of the electric control telescopic assembly is arranged corresponding to the control mechanism.

Preferably, the control assembly further comprises a main control elastic piece;

the main control elastic piece is respectively connected with the frame body and the control rod so as to apply driving force to the control rod, so that the braking piece is combined with the rotor of the motor.

Preferably, the control assembly further comprises a balancing elastic member;

the balance elastic piece is respectively connected with the frame body and the control mechanism so as to apply assistance to the control rod and balance part of the driving force.

Preferably, the electromagnetic brake further comprises a position holding mechanism;

the position holding mechanism is arranged on the frame body and corresponds to the control mechanism so as to abut against the control mechanism and maintain the rotated state of the control mechanism;

and/or, the position holding mechanism is arranged on the frame body and corresponds to the electric control telescopic assembly to adsorb the telescopic rod of the electric control telescopic assembly so as to maintain the state of the control mechanism after rotation.

Preferably, the electric control telescopic assembly comprises a first electromagnet and a second electromagnet;

the first electromagnet is arranged on the frame body, and a telescopic rod of the first electromagnet is arranged corresponding to the control mechanism so as to provide the driving force to enable the control assembly to rotate in the forward direction;

the second electromagnet is installed on the frame body, and the telescopic rod of the second electromagnet corresponds to the control mechanism so as to provide the driving force for enabling the control assembly to rotate reversely.

Preferably, the control mechanism comprises a first adjusting seat, a first connecting piece and a second connecting piece;

the first adjusting seat is rotatably and movably arranged on the frame body;

the first connecting piece is connected with the telescopic rod of the first electromagnet and the first adjusting seat;

the second connecting piece is connected with the telescopic rod of the second electromagnet and the first adjusting seat;

the control rod is connected with the first adjusting seat.

Preferably, the first connecting piece comprises a first connecting piece body and a first connecting column, the first connecting piece body is connected with the telescopic rod of the first electromagnet, the first connecting column is arranged on the first connecting piece body, and the first connecting column is inserted into the first adjusting seat;

the second connecting piece comprises a second connecting piece body and a second connecting column, the second connecting piece body is connected with the telescopic rod of the second electromagnet, the second connecting column is arranged on the second connecting piece body, and the second connecting column is inserted into the first adjusting seat.

Preferably, the first adjusting seat is provided with a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are located on two opposite sides along the rotation direction of the first adjusting seat;

the first connecting column is inserted into the first connecting groove of the first connecting arm;

the second connecting column is inserted into the second connecting groove of the second connecting arm.

Preferably, the first connecting groove is concavely formed from the outer surface of the first connecting arm to the direction close to the second connecting arm;

the second connecting groove is formed by being sunken from the outer surface of the second connecting arm to the direction close to the first connecting arm.

Preferably, the control mechanism with be provided with the ball between the support body, be provided with the part on the support body and hold the first ball groove of ball, the last part that is provided with of control mechanism holds the second ball groove of ball, first ball groove and/or the second ball groove is followed control mechanism's direction of rotation extends, and follows control mechanism's direction of rotation, first ball groove and/or the degree of depth in second ball groove increases progressively or decreases progressively.

Preferably, at least two first balls are arranged, two adjacent first balls are arranged at intervals, and each first ball is correspondingly provided with one first ball groove and one second ball groove;

the electromagnetic brake device further comprises a synchronizing ring, the synchronizing ring is arranged between the control mechanism and the frame body and can rotate relative to the frame body, ball holes matched with the first balls are formed in the synchronizing ring, and each first ball correspondingly penetrates through one of the ball holes.

Preferably, the first ball groove comprises a first accommodating groove, a second accommodating groove and a first transition groove, the recessed depth of the second accommodating groove is greater than that of the first accommodating groove, the first transition groove communicates the first accommodating groove with the second accommodating groove, the bottom wall of the first transition groove is an inclined surface, the bottom wall of the first accommodating groove comprises a first staying surface connected with the bottom wall of the first transition groove, the first staying surface is inclined towards the inside of the first accommodating groove relative to the bottom wall of the first transition groove, the bottom wall of the second accommodating groove comprises a second staying surface connected with the bottom wall of the first transition groove, and the second staying surface is inclined towards the outside of the second accommodating groove relative to the bottom wall of the first transition groove;

and/or, the second ball groove comprises a third accommodating groove, a fourth accommodating groove and a second transition groove, the depth of the depression of the fourth accommodating groove is greater than that of the depression of the third accommodating groove, the second transition groove communicates the fourth accommodating groove with the third accommodating groove, the bottom wall of the second transition groove is an inclined plane, the bottom wall of the third accommodating groove comprises a third staying surface connected with the bottom wall of the second transition groove, the third staying surface is inclined in the third accommodating groove relative to the bottom wall of the second transition surface, the bottom wall of the fourth accommodating groove comprises a fourth staying surface connected with the bottom wall of the second transition groove, and the fourth staying surface is inclined outwards relative to the bottom wall of the second transition groove.

Preferably, a thrust bearing is provided between the control mechanism and the control lever in the movable direction of the control lever.

Preferably, the device further comprises a manual control mechanism;

the manual control mechanism is rotatably arranged on the frame body and has a first rotation control state and a second rotation control state after the manual control mechanism rotates relative to the frame body; in the first rotation control state, the manual control mechanism and the control assembly are spaced from each other; and when the brake piece is in the second rotation control state, the manual control mechanism is abutted and limited to the control assembly, so that the brake piece is combined with or separated from the rotor of the motor.

Preferably, the electric control telescopic component, the control component and the brake component are all arranged in the frame body;

the frame body is provided with an avoidance opening which penetrates through the frame body, and the avoidance opening extends along the rotation direction of the manual control mechanism;

one part of the manual control mechanism is arranged in the frame body, the other part of the manual control mechanism extends out of the frame body from the avoidance port, and the manual control mechanism can slide in the avoidance port;

the electromagnetic brake further comprises a sealing element, the sealing element is installed at the avoiding opening, and the sealing element is connected with the manual control mechanism.

Preferably, the sealing element comprises a sealing ring and a sealing cover;

the sealing ring is sleeved on the frame body;

the sealing cover is connected with the sealing ring and covers the part of the manual control mechanism outside the frame body.

Preferably, a position detector is further included;

the position detector is mounted in the frame body to detect the first and/or second rotational control states of the manual operating mechanism.

Preferably, the device further comprises a limiting part;

the limiting part is mounted in the frame body and used for abutting and limiting the manual control mechanism so that the manual control mechanism can keep the first rotation control state or the second rotation control state.

A brake motor comprising a motor and an electromagnetic brake as claimed in any one of the above;

the frame body is installed on a stator of the motor.

Preferably, the motor is an inner rotor motor, the frame body is installed on a shell of the motor, and a friction piece used for being combined with the brake piece is arranged on a rotating shaft of the motor.

An electric vehicle comprising a vehicle body and a brake motor as described in any one of the above;

the brake motor is mounted on a wheel body of the vehicle body.

Compared with the prior art, the electromagnetic brake provided by the invention comprises a frame body, an electric control telescopic component, a control component and a brake piece; the electric control telescopic assembly is arranged on the frame body; the control assembly is rotatably and movably arranged on the frame body; the brake piece is arranged on the control component; the telescopic rod of the electric control telescopic assembly is arranged corresponding to the control assembly to provide driving force to enable the control assembly to rotate, so that the control assembly moves linearly to drive the brake piece to be combined with or separated from the rotor of the motor. The electromagnetic brake is characterized in that the control assembly is driven to rotate by the electric control telescopic assembly, so that the control assembly converts the rotation motion into linear motion to drive the brake piece to move, the brake piece is combined with or separated from a rotor of the motor, the braking and unlocking processes are more stable and smooth, the motor can be successfully unlocked by better ensuring, and the normal use of the motor is better guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a brake motor according to an embodiment;

FIG. 2 is a schematic cross-sectional view of the brake motor shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of area A shown in FIG. 2;

FIG. 4 is a schematic perspective view of a portion of the components of the electromagnetic brake in the brake motor of FIG. 1;

FIG. 5 is a perspective view of a portion of the components of the structure shown in FIG. 4;

FIG. 6 is a perspective view of a portion of the components of the structure shown in FIG. 4;

FIG. 7 is a perspective view of the first adjustment base shown in FIG. 3;

FIG. 8 is a schematic perspective view of the second adjustment base shown in FIG. 3;

FIG. 9 is a schematic perspective view of a portion of the components of the electromagnetic brake in the braking motor shown in FIG. 1;

FIG. 10 is a schematic perspective view of a portion of the components of the electromagnetic brake in the brake motor of FIG. 1;

FIG. 11 is a schematic cross-sectional view of the structure shown in FIG. 1;

FIG. 12 is a schematic cross-sectional view of a brake motor according to another embodiment;

FIG. 13 is an enlarged view of a portion of the area B shown in FIG. 12;

FIG. 14 is a perspective view of the first adjustment seat shown in FIG. 13;

FIG. 15 is a schematic cross-sectional view of the first adjustment block of FIG. 14 at the location of the second ball groove;

FIG. 16 is a perspective view of the second adjustment base shown in FIG. 13;

FIG. 17 is a schematic cross-sectional view of the second seat illustrated in FIG. 16 at the location of the first ball groove;

FIG. 18 is a cross-sectional view of the brake motor of FIG. 12 at an alternate angle;

FIG. 19 is a cross-sectional view of the brake motor shown in FIG. 12 at another angle

FIG. 20 is a schematic cross-sectional view of a brake motor according to another embodiment;

FIG. 21 is a cross-sectional view of a portion of the components of the brake motor shown in FIG. 20;

FIG. 22 is a perspective view of a portion of the components of the brake motor shown in FIG. 20;

FIG. 23 is a perspective view of the manual control member of FIG. 21;

FIG. 24 is a perspective view of the cover shown in FIG. 21;

fig. 25 is a perspective view of the manual driver of fig. 21.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "secured to," "mounted to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element; when an element is "connected" to another element or is said to be "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

The invention provides an electromagnetic brake, which comprises a frame body, an electric control telescopic component, a control component and a brake component, wherein the frame body is provided with a first frame; the electric control telescopic assembly is arranged on the frame body; the control assembly is rotatably and movably arranged on the frame body; the brake piece is arranged on the control component; the telescopic rod of the electric control telescopic component is arranged corresponding to the control component to provide driving force to enable the control component to rotate, so that the control component can move linearly to drive the brake piece to be combined with or separated from the rotor of the motor. The electromagnetic brake is characterized in that the control assembly is driven to rotate by the electric control telescopic assembly, so that the control assembly converts the rotation motion into linear motion to drive the brake piece to move, the brake piece is combined with or separated from a rotor of the motor, the braking and unlocking processes are more stable and smooth, the motor can be successfully unlocked by better ensuring, and the normal use of the motor is better guaranteed.

Example one

Please refer to fig. 1 to 11. The embodiment provides an electromagnetic brake 100, which includes a frame 10, an electrically controlled telescopic assembly 20, a control assembly 30 and a brake member 40, wherein the electrically controlled telescopic assembly 20 is mounted on the frame 10, and the electrically controlled telescopic assembly 20 refers to a component capable of correspondingly performing telescopic action after power is on or off. The control assembly 30 is rotatably and movably mounted on the frame body 10, wherein the rotatably and movably mounting means that: the control assembly 30 is mounted on the frame body 10, and the control assembly 30 can rotate relative to the frame body 10, and during the rotation process, the control assembly 30 can also move linearly along the axial direction of the central shaft of the rotating shaft. That is, the control unit 30 is driven to rotate, so that the rotational motion can be converted into the linear motion. The brake member 40 is mounted to the control assembly 30 such that movement of the control assembly 30 causes simultaneous movement of the brake member 40.

The telescopic rod of the electric control telescopic assembly 20 is arranged corresponding to the control assembly 30 to provide a driving force to rotate the control assembly 30, so that the control assembly 30 moves linearly to drive the brake member 40 to be combined with or separated from the rotor of the motor. Wherein, the arrangement of the telescopic rod of the electric control telescopic assembly 20 corresponding to the control assembly 30 means that: part of the structure of the control assembly 30 is located on a moving path of the telescopic rod of the electric control telescopic assembly 20, so that when the telescopic rod of the electric control telescopic assembly 20 moves in a telescopic manner, the control assembly 30 is correspondingly touched and extruded, and the control assembly 30 rotates correspondingly.

That is to say, the electrically controlled retractable assembly 20 is used to provide the driving force to the control assembly 30, the control assembly 30 can be driven to rotate by the driving force, and the control assembly 30 can convert the rotational motion into a linear motion, so as to drive the brake member 40 to move linearly, change the position of the brake member 40, and enable the brake member 40 to be combined with or separated from the rotor of the motor, thereby achieving braking or unlocking. The electrically controlled telescopic assembly 20 provides driving force to realize braking and unlocking, so that the braking and unlocking processes are faster and the cost is lower.

It should be noted that the braking member 40 may directly contact with the rotor of the motor to realize braking, or the braking member 40 may also contact with a component mounted on the rotor of the motor to realize braking, that is, the braking member 40 only needs to directly or indirectly contact with the rotor of the motor to generate frictional resistance to realize braking.

It can be understood that in the electromagnetic brake in the prior art, the brake piece is directly driven to linearly move by the electric control telescopic piece, so that braking and unlocking are realized, and the braking and unlocking processes are not stable and smooth enough. And when the rotor of the motor has load, the braking and unlocking are very difficult, and even the braking and unlocking cannot be successfully carried out. If on the wheel of motor application wheelchair car, when wheel department has a load, there is the resistance in the rotor department of motor this moment, hinders the motor and carries out normal unblock, and the automatically controlled extensible member can't drive the brake piece and remove even probably appears, and can't successfully unblock, influences the normal use of vehicle.

And this embodiment provides electromagnetism brake ware 100 is provided with control assembly 30, the flexible drive of automatically controlled flexible subassembly 20 control assembly 30 rotates to through control assembly 30 converts rotary motion into linear motion again, drives again brake piece 40 takes place rectilinear movement, realizes braking, unblock, and overall control process is more steady smooth and easy, the validity of guarantee braking, unblock that can be better, also can be better avoid the drive assembly to take place to damage. Meanwhile, the moving distance of the brake piece 40 can be controlled more accurately by converting the rotary motion into the linear motion for braking and unlocking, and the control precision can be improved.

Preferably, the control assembly 30 includes a control mechanism 31 and a control rod 32, and the control mechanism 31 is rotatably and movably mounted on the frame 10. The control rod 32 is connected with the control mechanism 31, and the control rod 32 can move linearly under the driving of the control mechanism 31. The brake member 40 is mounted on the control rod 32, and the telescopic rod of the electrically controlled telescopic assembly 20 is arranged corresponding to the control mechanism 31. That is to say, in this embodiment, the driving force provided by the electrically controlled retractable assembly 20 directly drives the control mechanism 31 to rotate, then the control mechanism 31 converts the rotational motion into a linear motion, so as to drive the control rod 32 to linearly move, and finally the control rod 32 drives the brake piece 40 to linearly move, so as to achieve braking and unlocking. Through the structure, the linear movement of the brake piece 40 is better ensured, the smooth combination and separation of the brake piece 40 and the rotor of the motor are better ensured, and the connection reliability between the parts is also ensured.

Preferably, the control assembly 30 further includes a main control elastic member 33, and the main control elastic member 33 is respectively connected to the frame body 10 and the control rod 32 to apply an urging force to the control rod 32 so as to couple the brake member 40 with the rotor of the motor. Wherein, the elastic component refers to: can be elastically deformed after being stressed, and can restore the component in the initial state after the stress is reduced or eliminated. In this embodiment, the main elastic member 33 is specifically a compression spring. The driving force is applied to the control rod 32 by the main control elastic element 33, so that the brake element 40 can be always combined with the rotor of the motor to brake when the electric control telescopic assembly 20 is not powered. Through the structure, when the motor is braked, the electric control telescopic assembly 20 does not need to be continuously supplied with power, so that the power supply is effectively saved.

That is to say, by providing the main control elastic element 33, under a normal condition, the control lever 32 will receive the driving force applied by the main control elastic element 33, so that the control lever 32 drives the brake element 40 to move, and the brake element 40 is combined with the rotor of the motor to continuously brake without continuously applying the driving force through the electrically controlled telescopic assembly 20, thereby effectively reducing energy consumption.

Preferably, the control assembly 30 further includes a balancing elastic member 34, and the balancing elastic member 34 respectively connects the frame body 10 and the control mechanism 31 to apply an assisting force to the control lever 32 to balance part of the driving force. That is, the counterbalancing spring 34 is configured to apply the assisting force to the control lever 32 in a direction opposite to the urging force, so that the urging force to the control lever 32 can be attenuated by the counterbalancing spring 34. Specifically, in this embodiment, as shown in fig. 2, the main elastic member 33 is configured to provide the downward urging force to the control lever 32, and the balance elastic member 34 is configured to provide the upward assisting force to the control lever 32, where the assisting force is smaller than the urging force, so that a part of the urging force can be balanced by the assisting force, and the urging force applied to the control lever 32 is smaller.

It can be understood that, in the prior art, in order to ensure the braking effect of the electromagnetic brake, the main control elastic element usually adopts an elastic structure with a larger elastic force, so that the driving force applied to the control rod by the main control elastic element is larger. When the electronic control telescopic assembly is unlocked, the larger the resistance to be overcome is, the unlocking difficulty is increased, and the electronic control telescopic assembly can be unlocked only by applying larger driving force to the control assembly. Just because the required drive power of unblock is great to and the elasticity of master control elastic component is great, also lead to unblock and braking in-process, the part atress is too big in the twinkling of an eye, makes in unblock and braking in-process steady smooth and easy inadequately, still may have the risk that the part takes place the damage.

In this embodiment, the balance elastic member 34 is provided, and the assist force is applied to the control rod 32 through the balance elastic member 34, so that the driving force can be weakened, the electronic control telescopic assembly 20 can be unlocked by providing a smaller driving force, the unlocking difficulty is reduced, and the energy is saved. And in the unlocking and braking processes, the instant stress of the components can be reduced, so that the unlocking and braking processes are more stable and smooth, and the risk of damage to the components is reduced.

Specifically, in this embodiment, the balancing elastic member 34 is a torsion spring, so that the assisting force is provided to the control lever 32 by applying a torsion force to the control mechanism 31.

Preferably, the electrically controlled telescopic assembly 20 includes a first electromagnet 21 and a second electromagnet 22. First electromagnet 21 is installed in support body 10, just the telescopic link 211 of first electromagnet corresponds control mechanism 31 sets up to provide drive power lets control assembly 30 forward rotation. The second electromagnet 22 is installed on the frame body 10, and the telescopic rod 221 of the second electromagnet is arranged corresponding to the control mechanism 31, so as to provide the driving force to make the control assembly 30 rotate reversely.

Where forward rotation and reverse rotation refer to two opposite directions of rotation, such as clockwise in one embodiment, then counter-clockwise. In one embodiment, when the forward rotation is counterclockwise, the reverse rotation is clockwise.

Specifically, in this embodiment, when the first electromagnet 21 drives the control mechanism 31 to rotate forward to a certain position, the control rod 32 drives the brake piece 40 to combine with the rotor of the motor, so as to achieve braking. When the second electromagnet 22 drives the control mechanism 31 to rotate reversely to a certain position, the control rod 32 drives the brake piece 40 to separate from the rotor of the motor, so as to unlock the motor.

That is to say, in the electronically controlled retractable assembly 20 provided in this embodiment, the first electromagnet 21 and the second electromagnet 22 are provided, so that after being powered on, the driving force can be respectively provided to the control mechanism 31, and the control mechanism 31 can rotate in two different directions, so that the electronically controlled retractable assembly 20 can be braked and unlocked.

It can be understood that in the electromagnetic brake of the prior art, the electromagnet can only control the braking element to rapidly move in one direction after being electrified, and the direction opposite to the one direction needs to be reset through the elastic force of the elastic element, so that the unlocking or locking timeliness is influenced, and the arrangement of components in the braking motor is limited.

In this embodiment, by arranging the first electromagnet 21 and the second electromagnet 22, the electronic control telescopic assembly 20 can apply driving forces in two different directions to the control mechanism 31, so that the electronic control telescopic assembly 20 can drive the brake member 40 to brake, and can drive the brake member 40 to unlock, thereby better ensuring the speed and stability of braking and unlocking.

Preferably, the control mechanism 31 includes a first adjusting seat 311, a first connecting member 312 and a second connecting member 313. The first adjusting seat 311 is movably installed in the frame body 10 in a rotatable manner, the first connecting piece 312 is connected with the telescopic rod 211 of the first electromagnet and the first adjusting seat 311, the second connecting piece 313 is connected with the telescopic rod 221 of the second electromagnet and the first adjusting seat 311, and the control rod 32 is connected with the first adjusting seat 311. That is, in the present embodiment, the control assembly 30, and in particular, the first adjusting seat 311, is rotatably mounted on the frame body 10, so that the first adjusting seat 311 converts the rotational motion into the linear motion. The first connecting piece 312 is directly connected to the telescopic rod 211 of the first electromagnet, and the second connecting piece 313 is directly connected to the telescopic rod 221 of the second electromagnet, so that the first electromagnet 21 and the second electromagnet 22 can more quickly drive the first adjusting seat 311 to rotate after being powered on, and an integral structure is formed among the first electromagnet 21, the second electromagnet 22 and the control mechanism 31.

It can be understood that in the electromagnetic brake in the prior art, the electromagnets are mutually independent, and linkage cannot be formed among the electromagnets, so that the control difficulty is increased. Meanwhile, the electromagnet can only control the brake piece to rapidly move along one direction, and the direction opposite to the direction needs to be reset through the elastic force of the elastic piece, so that the unlocking or locking timeliness is influenced, and the arrangement of parts in a brake motor is limited.

In the electromagnetic brake 100 provided in this embodiment, the electrically controlled telescopic element 20 and the control mechanism 31 may form an integral structure, so that the first electromagnet 21 and the second electromagnet 22 may form linkage. When the unlocking or braking is carried out, the second electromagnet 22 and the first electromagnet 21 are electrified independently, so that the control is simpler, the telescopic rod of the other electromagnet can retract quickly, the normal unlocking or locking cannot be influenced, and the unlocking and braking speeds and stability are better guaranteed. Meanwhile, the whole structure can be more compact and simpler through the structure, and the unlocking and braking can be quicker and more convenient.

Preferably, the electronic control telescopic assembly 20 further includes an electromagnet seat 23 installed on the frame body 10, and the first electromagnet 21 and the second electromagnet 22 are respectively installed on the electromagnet seat 23. Therefore, by the structure, the installation positions of the first electromagnet 21 and the second electromagnet 21 can be better, and the whole structure is more compact and reliable.

Preferably, the first connecting member 312 includes a first connecting member body 3121 and a first connecting column 3122, the first connecting member body 3121 is connected to the telescopic rod 211 of the first electromagnet, the first connecting column 3122 is disposed on the first connecting member body 3121, and the first connecting column 3122 is inserted into the first adjusting seat 311. The second connecting member 313 includes a second connecting member body 3131 and a second connecting post 3132, the second connecting member body 3131 is connected to the telescopic rod 221 of the second electromagnet, the second connecting post 3132 is disposed on the second connecting member body 3131, and the second connecting post 3132 is inserted into the first adjusting seat 311. Therefore, when the first electromagnet 21 is powered on, the first connecting member body 3121 can be driven to move by the extension of the telescopic rod 211 of the first electromagnet, and the first connecting column 3122 on the first connecting member body 3121 can drive the first adjusting seat 311 to rotate in the forward direction in the moving process, and the telescopic rod 221 of the second electromagnet can be driven to correspondingly retract while the first adjusting seat 311 rotates. When the second electromagnet 22 is powered on, the second connecting piece body 3131 can be driven to move by the extension and contraction of the telescopic rod 221 of the second electromagnet, and the second connecting column 3132 on the second connecting piece body 3131 can drive the first adjusting seat 311 to rotate reversely in the moving process, and the first adjusting seat 311 can also drive the telescopic rod 211 of the first electromagnet to correspondingly retract while rotating. In this embodiment, the first connecting column 3122 is inserted into the first adjusting seat 311, and the second connecting column 3132 is inserted into the first adjusting seat 311, so that the first connecting piece 312, the second connecting piece 313 and the first adjusting seat 311 are connected non-rigidly, the driving of the electrically controlled telescopic assembly 20 to the control mechanism 31 is better ensured, and the reliability of operation is ensured.

First link arm 3111 and second link arm 3112 have been seted up on first regulation seat 311, along the rotation direction of first regulation seat 311, first link arm 3111, second link arm 3112 is located relative both sides. The first coupling post 3122 is inserted into the first coupling groove 3113 of the first coupling arm 3111, and the second coupling post 3132 is inserted into the second coupling groove 3114 of the second coupling arm 3112. Therefore, with such a structure, the first connecting piece 312 and the second connecting piece 313 can control the first adjusting seat 311 more easily, and the whole structure is simpler and more compact.

Preferably, the first connection groove 3113 is concavely formed from an outer surface 3115 of the first connection arm toward the second connection arm 3112, wherein the outer surface 3115 of the first connection arm refers to a side surface of the first connection arm 3111 away from the second connection arm 3112. The second connection groove 3114 is concavely formed from an outer surface 3116 of the second connection arm toward the first connection arm 3111, where the outer surface 3116 of the second connection arm refers to a side surface of the second connection arm 3112 away from the first connection arm 3111. Therefore, by the structure, the electric control telescopic assembly 20 and the control assembly 30 can be conveniently installed, and the installation difficulty among the first connecting piece 312, the second connecting piece 313 and the first adjusting seat 311 is reduced.

Preferably, the control rod 32 penetrates through the first adjusting seat 311 and the frame body 10, and the main control elastic member 33 is sleeved on the control rod 32. Therefore, by the structure, the whole structure is more compact, and meanwhile, the stress direction can be controlled more accurately.

Preferably, a ball 50 is disposed between the control mechanism 31 and the frame body 10, a first ball groove 11 for partially accommodating the ball 50 is disposed on the frame body 10, and a second ball groove 35 for partially accommodating the ball 50 is disposed on the control mechanism 31. The partial accommodation means that the groove depth of the ball groove is smaller than the diameter of the ball 50, so that the ball 50 is partially located outside the ball groove, and the ball 50 is clamped between the control mechanism 31 and the frame body 10. The first ball groove 11 and/or the second ball groove 35 extend along the rotation direction of the control mechanism 31, and the depth of the first ball groove 11 and/or the second ball groove 35 increases or decreases along the rotation direction of the control mechanism 31.

In this embodiment, the frame body 10 is fixedly provided with a second adjusting seat 12, the first ball groove 11 is disposed on the second adjusting seat 12, and the second ball groove 35 is disposed on the first adjusting seat 311. The first ball groove 11 and the second ball groove 35 both extend along the rotation direction of the control mechanism 31, and the depth increases or decreases in the same direction. Therefore, when the first adjusting seat 311 rotates to a certain position, the ball 50 is located in a shallow region between the first ball groove 11 and the second ball groove 35, and at this time, due to the extrusion of the ball 50, the distance between the first adjusting seat 311 and the second adjusting seat 12 is enlarged, so that the first adjusting seat 311 can drive the brake element 40 to be separated from the rotor of the motor. When the first adjusting seat 311 rotates to another position, the ball 50 is located in a deep region of the first ball groove 11 and the second ball groove 35, so that the first adjusting seat 311 can be forced to move toward the direction of the brake element 40, the distance between the first adjusting seat 311 and the second adjusting seat 12 is reduced, and the first adjusting seat 311 can drive the brake element 40 to be combined with the rotor of the motor.

That is, the first adjusting seat 311 has a first rotation state and a second rotation state after rotating relative to the frame body 10, when the first adjusting seat 311 is in the first rotation state, the ball 50 is located in a deep region in the first ball groove 11 and the second ball groove 35, the relative distance between the first adjusting seat 311 and the second adjusting seat 12 is short, and the first adjusting seat 311 can drive the brake element 40 to be combined with the rotor of the motor; when the first adjusting seat 311 rotates, the ball 50 gradually moves in the first ball groove 11 and the second ball groove 35, the ball 50 gradually moves to the area of the first ball groove 11 and the second ball groove 35 with a shallower depth, so that two opposite points of the ball 50 respectively abut against and limit the first adjusting seat 311 and the second adjusting seat 12, the ball 50 extrudes and drives the first adjusting seat 311 to move, and the relative distance between the first adjusting seat 311 and the second adjusting seat 12 gradually increases, so that the rotational motion of the first adjusting seat 311 is converted into a linear motion, when the first adjusting seat 311 rotates to the second rotational state, the first adjusting seat 311 drives the control rod 32 to move, the control rod 32 drives the brake element 40 to move, and the brake element 40 is separated from the rotor of the motor, and unlocking is realized. Of course, in other embodiments, the specific structure of the control mechanism 31 rotatably and movably mounted on the frame body 10 may also adopt other required structures, for example, a slope structure is provided between the first adjusting seat 311 and the second adjusting seat 12, and the slope structure guides the first adjusting seat 311 to linearly move during the rotation process. Or a screw rod and other structural schemes can be adopted between the first adjusting seat 311 and the second adjusting seat 12. In this embodiment, the ball groove and the ball 50 are adopted, so that the ball 50 is in point contact with the first adjusting seat 311 and the second adjusting seat 12, the required processing precision is low, and the processing difficulty is effectively reduced.

Preferably, a thrust bearing 36 is provided between the control mechanism 31 and the control lever 32 in the movable direction of the control lever 32. Therefore, the thrust bearing 36 can better apply force to the control rod 32, the driving of the control rod 32 is better guaranteed, the stability and smoothness in the control process are further guaranteed, and the unlocking reliability is better guaranteed.

Preferably, the electromagnetic brake 100 further includes a manual control mechanism 60, the manual control mechanism 60 is rotatably mounted on the frame body 10, and the manual control mechanism 60 has a first rotation control state and a second rotation control state after relative rotation with respect to the frame body 10; in the first rotational control state, the manual operating mechanism 60 and the control assembly 30 are spaced apart from each other; in the second rotation control state, the manual control mechanism 60 abuts against and limits the control assembly 30, so that the brake member 40 is coupled with or separated from the rotor of the motor. That is, the manual control mechanism 60 has at least two rotation position states, when the manual control mechanism 60 rotates to the first rotation control state, the manual control mechanism 60 does not limit the position of the control assembly 30, and the control assembly 30 can normally and movably operate. When the manual control mechanism 60 is forced to rotate to the second rotation control state, the manual control mechanism 60 can correspondingly abut against and limit the control assembly 30, so as to change the position state of the control assembly 30, and the brake element 40 is combined with or separated from the rotor of the motor.

Specifically, in the present embodiment, when the manual control mechanism 60 is in the second rotation control state, the manual control mechanism 60 abuts and presses the first adjusting seat 311, so that the brake element 40 is separated from the rotor of the motor. Of course, in other embodiments, when the manual operating mechanism 60 is in the second rotation control state, the manual operating mechanism 60 may also abut and press the first adjusting seat 311, so that the brake element 40 is combined with the rotor of the motor. In the present embodiment, the brake member 40 is separated from the rotor of the motor only when the manual operation mechanism 60 is in the second rotation control state.

It is understood that in the prior art electromagnetic brake, the braking member is usually combined with the rotor of the motor in a normal state, i.e. the electromagnetic brake is usually in a braking state in a normal state. At this time, if the electromagnetic brake is powered off and the control assembly cannot provide driving force, the motor is always in a braking state and cannot normally operate. If the motor is applied to the wheelchair and the electromagnetic brake is powered off, the wheelchair can be in a braking state all the time and cannot move. By providing the manual operation mechanism 60, when the electrically controlled retractable assembly 20 cannot provide driving force, the operator can manually control the manual operation mechanism 60 to drive the control assembly 30 to operate, so that the brake element 40 is separated from the rotor of the motor, and the motor can normally operate.

Preferably, the electrically controlled telescopic assembly 20, the control assembly 30 and the brake member 40 are all mounted in the frame body 10, so that the components can be well protected by the frame body 10. An avoiding opening 13 is formed in the frame body 10, and the avoiding opening 13 extends along the rotating direction of the manual control mechanism 60. A part of the manual control mechanism 60 is installed in the frame body 10, another part of the manual control mechanism 60 extends out of the avoiding opening 13 of the frame body 10, and the manual control mechanism 60 can slide in the avoiding opening 13. That is, the extending distance of the avoiding opening 13 extending along the rotating direction of the manual operating mechanism 60 is not less than the required rotating distance of the manual operating mechanism 60, so that the inner wall of the avoiding opening 13 does not obstruct the rotation of the manual operating mechanism 60, and the manual operating mechanism 60 can smoothly rotate relative to the frame body 10 to change the rotating state.

The electromagnetic brake 100 further comprises a sealing member 70, the sealing member 70 is installed at the avoidance port 13, and the sealing member 70 is connected with the manual operating mechanism 60. Namely, the sealing element 70 is arranged at a position corresponding to the avoiding opening 13, so that the sealing element 70 can correspondingly block the avoiding opening 13 to prevent pollutants from entering the frame body 10 from the avoiding opening 13. Meanwhile, the sealing element 70 is further connected with the manual control mechanism 60, so that when the manual control mechanism 60 rotates, the sealing element 70 can be correspondingly driven to rotate, and the sealing of the avoidance port 13 by the sealing element 70 is better ensured.

It can be understood that, in the electromagnetic brake in the prior art, in order to facilitate the force application of the manual operating mechanism by the operator, the manual operating mechanism needs to extend to the outside of the frame body, so that the contaminants easily enter the frame body from the installation position of the manual operating mechanism on the frame body. The normal operation of the electromagnetic brake is influenced, and the service life is reduced.

And this embodiment provides be provided with in the electromagnetic brake 100 sealing member 70, through sealing member 70 can be good keep away mouthful 13, avoid the pollutant follow keep away mouthful 13 department and enter into to in the support body 10, better guarantee the normal operating of electromagnetic brake 100 has improved the life of electromagnetic brake 100.

Preferably, the sealing element 70 includes a sealing ring 71 and a sealing cover 72, the sealing ring 71 is sleeved on the frame body 10, and the sealing cover 72 is connected to the sealing ring 71 and covers a portion of the manual control mechanism 60 located outside the frame body 10. Thereby locate through the cover the support body 10 the sealing washer 71 can be better sealed dodge mouthful 13 manual control mechanism 60 also can be good avoid when rotating dodge mouthful 13 the gap appears, better improvement sealed effect. Meanwhile, the sealing cover 72 seals the part of the manual control mechanism 60 outside the frame body 10, so that the sealing effect is further improved, and pollutants can be better prevented from entering the frame body 10.

Specifically, in this embodiment, the frame body 10 includes a base 14 and a housing 15 covering the outside of the base 14, the sealing ring 71 is sleeved on the base 14, and the sealing ring 71 is located between the base 14 and the housing, so as to better ensure the sealing effect.

Preferably, the electromagnetic brake 100 further includes a position detector 80, and the position detector 80 is installed in the frame body 10 to detect the first rotation control state and/or the second rotation control state of the manual operating mechanism 60. Therefore, the position detector 80 can well detect the current position of the manual control mechanism 60, and can better prompt the current state of the manual control mechanism 60 to an operator. Specifically, in this embodiment, the position detector 80 is a travel switch, and when the manual control mechanism 60 is in the second rotation control state, the travel switch is touched correspondingly, so that the state of the manual control mechanism 60 can be detected through the travel switch, and the manual control mechanism is prompted in real time.

Preferably, the electromagnetic brake 100 further includes a limiting member 90, and the limiting member 90 is installed in the frame body 10 to abut against and limit the manual control mechanism 60, so that the manual control mechanism 60 maintains the first rotation control state or the second rotation control state. Therefore, after the operator finishes adjusting the manual control mechanism 60, the manual control mechanism 60 can maintain the adjusted state through the limiting member 90, and the reliability of adjustment is guaranteed. Meanwhile, the operator can be prompted through the good feedback of the limiting part 90, and the operator can timely know that the manual control mechanism 60 is adjusted in place through the corresponding region of the limiting part 90 which is abutted against the manual control mechanism. Specifically, in this embodiment, the limiting member 90 is a spring structure, when the manual control mechanism 60 rotates to the first rotation control state or the second rotation control state, the corresponding buckle of the limiting member 90 is connected to the corresponding area on the manual control mechanism 60, so as to limit the manual control mechanism 60, and meanwhile, the current position of the manual control mechanism 60 can be better fed back through the spring structure, so that an operator can more timely know whether the adjustment is in place.

Preferably, the manual operating mechanism 60 is provided with a first locking groove 61 and a second locking groove 62, and the first locking groove 61 and the second locking groove 62 are spaced from each other along the rotation direction of the manual operating mechanism 60. In the first rotation control state, the limiting member 90 abuts against and is locked in the first locking groove 61, so that the manual control mechanism 60 maintains the first rotation control state. In the second rotation control state, the limiting member 90 abuts and is locked in the second locking groove 62, so that the manual control mechanism 60 maintains the second rotation control state. That is, in the present embodiment, the stopper 90 abuts against the locking grooves locked at different positions on the manual control mechanism 60, so that the manual control mechanism 60 can maintain the first rotation control state and the second rotation control state. Through the structure, the state can be better kept after the manual control mechanism 60 is adjusted in place, and the manual control mechanism 60 is effectively prevented from rotating accidentally.

Preferably, manual control mechanism 60 includes control panel 63, control post 64 and brake valve lever 65, control panel 63 is rotatable install in the support body 10, control post 64 with control panel 63 is connected for the butt spacing first regulation seat 311. That is to say, in this embodiment, the abutment limit of the manual control mechanism 60 on the control assembly 30 is specifically realized by the control column 64, and when the control panel 63 rotates, the control column 64 can be correspondingly driven to rotate, so that the control assembly 30 can be correspondingly abutted and limited by the control column 64. Control handle 65 with control panel 63 connects and passes through dodge mouth 13 and extend support body 10, thereby pass through control handle 65 has made things convenient for the operator right control panel 63 carries out the application of force, makes the operator right manual control mechanism 60's control regulation is simpler.

It is understood that, in order to better maintain the first adjusting seat 311 in the rotated state, a state maintaining member may be further disposed in the electromagnetic brake 100, so that when the first adjusting seat 311 is rotated to a certain position, the state of the first adjusting seat 311 can be maintained by the state maintaining member, so that power does not need to be continuously supplied to the electrically controlled telescopic assembly 20. For example, the state maintaining member may be a pawl type position limiting structure, when the electromagnetic brake 100 is in the unlocked state, the state maintaining member may correspondingly catch the first adjusting seat 311, so that after the electric control telescopic assembly 20 is powered off, the state maintaining member can continuously apply force to the first adjusting seat 311, and maintain the state of the first adjusting seat 311.

The electromagnetic brake 100 provided by the embodiment has low cost and can be directly adapted to the existing motor.

Preferably, an electric storage element may be disposed on the controller of the electromagnetic brake 100, and the electric storage element may be a capacitor. Therefore, when the electromagnetic brake 100 is powered off, the power storage element can supply power to the second electromagnet 21, so that automatic braking is realized, and safety is better guaranteed.

Example two

Please refer to fig. 12-19 in combination. The present embodiment provides an electromagnetic brake 600, which has substantially the same structure as the electromagnetic brake 100 described in the first embodiment, except that:

in this embodiment, the electromagnetic brake 600 further includes a synchronizing ring 610, the synchronizing ring 610 is disposed between the first adjusting seat 620 and the second adjusting seat 630, and the synchronizing ring 610 can rotate relative to the second adjusting seat 630, the synchronizing ring 610 is provided with ball holes 611 matching with the balls 640, and each ball 640 correspondingly penetrates one of the ball holes 611. That is, the number of the ball holes 611 is not less than the number of the balls 640, so that each ball 640 can correspondingly penetrate through one of the ball holes 611. The ball hole 611 matched with the ball 640 means that the ball hole 611 can receive a part of the ball 640, and the hole wall of the ball hole 611 does not limit the normal rolling of the ball 640.

It can be understood that, in the electromagnetic brake in the prior art, the synchronous rolling of a plurality of balls cannot be guaranteed, and in the rotating adjustment process, the first adjusting seat is easy to deflect, so that the stability of transmission is affected.

In this embodiment, the synchronizing ring 610 is disposed between the first adjusting seat 620 and the second adjusting seat 630, and the balls 640 are disposed through the ball holes 611 of the synchronizing ring 610. Therefore, in the rotation adjustment process, when the first adjustment seat 620 drives the ball 640 to roll, the ball 640 can be correspondingly abutted against the inner wall of the ball hole 611, and the ball 640 drives the synchronizing ring 610 to synchronously rotate. And the synchronous ring 610 is driven to synchronously rotate, so that the synchronous ring 610 can drive other balls 640 to synchronously roll towards the rotating direction of the first adjusting seat 620, and the synchronous rolling of the balls 640 is ensured. That is, in this embodiment, the provision of the synchronizer ring 610 can restrict the plurality of balls 640, connect the plurality of balls 640 integrally, and when one ball rotates the synchronizer ring 610, the synchronizer ring 610 can apply a force to the other balls 640, thereby ensuring that the plurality of balls 640 roll synchronously. Therefore, the first adjusting seat 620 is prevented from inclining to one side better, and the stability of transmission is guaranteed better.

Specifically, in the present embodiment, four balls 640 are provided.

In this embodiment, the second ball groove 650 is opened in the first adjusting seat 620 and extends along the rotatable direction of the first adjusting seat 620, the second ball groove 650 includes a first receiving groove 651, a second receiving groove 652 and a first transition groove 653, and the recess depth of the second receiving groove 652 is greater than the recess depth of the first receiving groove 651. Wherein the depression depth refers to a distance depressed inward from the outer surface of the first regulation seat 620. The first transition groove 653 connects the first receiving groove 651 with the second receiving groove 652, that is, the first transition groove 653 is disposed between the first receiving groove 651 and the second receiving groove 652. The bottom wall 6531 of the first transition groove 653 is inclined so that the ball 640 is better guided by the bottom wall 6531 of the first transition groove when the ball 640 rolls in the second ball groove 650. The bottom wall 6511 of the first receiving groove 651 comprises a first stop surface 6512 connected to the bottom wall 6531 of the first transition groove, the first stop surface 6512 being inclined relative to the bottom wall 6531 of the first transition groove into the first receiving groove 651. That is, the first stop surface 6512 is inclined relative to the bottom wall 6531 of the first transition groove and is inclined away from the second transmission piece 20. When the ball 640 rolls on the first stop surface 6512, it can stop well on the first stop surface 6512.

The bottom wall 6521 of the second receiving groove 652 includes a second stop surface 6522 connected to the bottom wall 6531 of the first transition groove, and the second stop surface 6522 is inclined outward of the second receiving groove 652 with respect to the bottom wall 6531 of the first transition groove. That is, the second stop surface 6522 is inclined with respect to the bottom wall 6531 of the first transition groove and is inclined toward the direction approaching the second transmission piece 20. When the ball 640 rolls on the second stopping surface 6522, it can be stopped well on the second stopping surface 6522.

It can be understood that, in the ball ramp structure of the prior art, the bottom wall of the ramp is of an integral ramp structure, and when the balls roll in place in the ramp, the balls are easy to roll along the ramp to the original position, and cannot stay well to remain in a desired area, so that the position state of the first adjusting seat 620 is affected, and the stability of the transmission control is affected.

In the present embodiment, the first staying surface 6512 and the second staying surface 6522 inclined with respect to the bottom wall 6531 of the first transition groove are provided, so that when the ball 640 rolls into the first receiving groove 651, the first staying surface 6512 can be well received by the ball 640, and the ball 640 is prevented from rolling along the bottom wall 6531 of the first transition groove to the home position; when the balls 640 roll into the second receiving grooves 652, the second resting surfaces 6522 can be well received by the balls 640 to prevent the balls 640 from rolling along the bottom walls 6531 of the first transition grooves toward the original positions. That is to say, in this embodiment, the first staying surface 6512 and the second staying surface 6522 are disposed on two sides of the bottom wall 6531 of the first transition groove, so that the ball 640 is not easy to roll along the inclined surface to the original position after rolling in place, the ball 640 can better stay in the required area, and further the position state of the first adjusting seat 620 can be better ensured, and the stability of transmission control can be ensured.

Preferably, the first ball groove 660 is opened in the second adjusting seat 630 and extends along the rotatable direction of the first adjusting seat 620, so that the ball 640 is smoother when rolling, and the ball 640 is better prevented from being blocked.

The first ball groove 660 includes a third receiving groove 661, a fourth receiving groove 662, and a second transition groove 663, and a depression depth of the fourth receiving groove 662 is greater than a depression depth of the third receiving groove 661. The second transition groove 663 communicates the fourth accommodating groove 662 with the third accommodating groove 661, a bottom wall 6631 of the second transition groove 663 is an inclined surface, a bottom wall 6611 of the third accommodating groove 661 includes a third staying surface 6612 connected with the bottom wall 6631 of the second transition groove, and the third staying surface 6612 is inclined inward of the third accommodating groove 661 relative to the bottom wall 6631 of the second transition surface. That is, the third staying surface 6612 is inclined with respect to the bottom wall 6631 of the second transition groove and is inclined away from the first adjustment seat 620. When the balls 640 roll to the third stop surface 6612, they can stop well at the third stop surface 6612.

The bottom wall 6621 of the fourth accommodation groove 662 includes a fourth stay surface 6621 connected to the bottom wall 6631 of the second transition groove, and the fourth stay surface 6621 is inclined outward of the fourth accommodation groove 662 relative to the bottom wall 6631 of the second transition groove. That is, the fourth staying surface 6621 is inclined with respect to the bottom wall 6631 of the second transition groove and is inclined toward the first adjustment seat 620. When the balls 640 roll to the fourth stopping surface 6621, they can stop well on the fourth stopping surface 6621.

In this embodiment, the second ball groove 650 and the first ball groove 660 each extend in the rotational direction of the first adjustment seat 620. Of course, in other embodiments, either one of the second ball groove 650 and the first ball groove 660 may extend in the rotatable direction of the first adjustment seat 620.

Preferably, the electromagnetic brake 600 further includes position maintaining mechanisms 670, and in this embodiment, the position maintaining mechanisms 670 are provided in two groups, which are divided into a first position maintaining mechanism 671 and a second position maintaining mechanism 672.

The first position keeping mechanism 671 is disposed on the frame body and corresponds to the first adjusting seat 620, so as to abut against the first adjusting seat 620, and maintain the state of the first adjusting seat 620 after rotating.

Specifically, two limiting grooves 621 are formed in the first adjusting seat 620 along the rotatable direction, and when the first adjusting seat 620 rotates in place, the first position keeping mechanism 671 is correspondingly clamped in one of the limiting grooves 621, so as to maintain the rotated state of the first adjusting seat 620. When the ball 640 is located in the first receiving groove 651, the first position-keeping mechanism 671 is correspondingly engaged with one of the limiting grooves 621, so as to maintain the state of the first adjusting seat 620; when the ball 640 is located in the second receiving groove 652, the first position keeping mechanism 671 is correspondingly clamped in the other limiting groove 621, so as to maintain the state of the first adjusting seat 620.

More specifically, in the present embodiment, the first position maintaining mechanism 671 is an elastic structure, and includes an elastic component 6711 and a limiting ball 6712 connected to the elastic component 6711, and the elastic component 6711 is provided with a spring. Therefore, when the first adjusting seat 620 is forced to rotate, the elastic component 6711 can be correspondingly pressed, and the limiting ball 6712 can be retracted. After the first adjusting seat 620 rotates in place, the elastic element 6711 drives the limiting ball 6712 to extend out and be clamped in the limiting groove 621, so as to maintain the rotated state of the first adjusting seat 620. Of course, in other embodiments, the first position keeping mechanism 671 may also adopt other position limiting structures, such as a spring structure.

Second position holding mechanism 672 sets up on the support body, and corresponds the setting of automatically controlled flexible subassembly to adsorb the telescopic link of first electro-magnet and/or the telescopic link of second electro-magnet, in order to maintain first regulation seat 620 state after rotating.

Specifically, in this embodiment, the second position maintaining mechanism 672 is a magnet.

More specifically, two second position holding mechanisms 672 are provided, one second position holding mechanism 672 is provided at the head portion of the second electromagnet, and the other second position holding mechanism 672 is provided at the tail portion of the first electromagnet. Therefore, when the telescopic rod of the second electromagnet extends, the second position maintaining mechanism 672 can correspondingly adsorb the head of the telescopic rod of the second electromagnet. After the second electromagnet loses power, the telescopic rod of the second electromagnet can be prevented from retracting. In this embodiment, the first electromagnet and the second electromagnet are connected to the same component to form a link mechanism, so that when the telescopic rod of the second electromagnet extends out, the telescopic rod of the first electromagnet is correspondingly driven to retract. And the other second position holding mechanism 672 can correspondingly adsorb the tail part of the first electromagnet, so that the telescopic rod of the second electromagnet is prevented from retracting better. In this way, the position of the electrically controlled retractable assembly is limited by the second position retaining mechanism 672, so that the first adjusting seat 620 maintains the state, even if the electrically controlled retractable assembly is powered off, the electromagnetic brake 600 can maintain the unlocking state through the cooperation of the second position retaining mechanism 672 and other components in the electromagnetic brake 600, and the electromagnetic brake can be maintained without continuously supplying power to the electrically controlled retractable assembly, thereby effectively saving energy.

Of course, in other embodiments, only the first position maintaining mechanism 671 or the second position maintaining mechanism 672 may be provided in the electromagnetic brake 600 as actually required.

EXAMPLE III

Please refer to fig. 1 to fig. 3. The present embodiment provides a brake motor, which includes a motor 200 and an electromagnetic brake 100 (or an electromagnetic brake 600) described in the first embodiment, wherein the frame body 10 is mounted on a stator of the motor 200.

Specifically, in this embodiment, the motor 200 is an inner rotor motor, that is, the shaft of the motor 200 is a rotatable structure, a rotating shaft 210 of the motor 200 is provided with a friction member 220 for combining with the brake member 40, and the frame body 10 is mounted on a housing 230 of the motor 200. Therefore, the brake piece 40 is in combined contact with the friction piece 220, so that the friction resistance generated between the brake piece 40 and the friction piece 220 realizes the braking of the motor 200, and the braking effect is better guaranteed.

Example four

Please refer to fig. 20-25 in combination. The present embodiment provides a brake motor, which includes a motor 300 and an electromagnetic brake 400, where the structure of the electromagnetic brake 400 is substantially the same as the structure of the electromagnetic brake 100 described in the first embodiment (or the electromagnetic brake 600 described in the second embodiment), and the difference is that:

in the present embodiment, the motor 300 is an external rotor motor, that is, the shaft 310 of the motor 300 is a fixed structure, and the housing 320 of the motor 300 is a rotatable structure. A frame 410 is mounted on the shaft 310, and a control assembly 420 is rotatably and movably mounted on the shaft 310.

Also, in the present embodiment, the manual operating mechanism 500 is disposed on the end cap 340.

Specifically, the rotor 350 of the motor 300 is rotatably mounted on the shaft 310, and the rotor 350 is disposed corresponding to the stator 360 fixed on the shaft 310. The housing 320 is coupled to the rotor 350, and the housing 320 is disposed around the outside of the stator 360. The end cap 340 is connected to one end of the housing 320, and the electromagnetic brake 400 is located in a space surrounded by the end cap 340. Therefore, the stability of the whole operation of the brake motor can be better guaranteed through the structure, and the influence on the normal operation of parts in the brake motor due to pollution is better avoided.

Preferably, a friction member 330 is disposed inside the end cap 340, and the friction member 330 is configured to be combined with the braking member 430. That is, the friction member 330 is disposed at a position corresponding to the brake member 430, and when the member in the electromagnetic brake 400 drives the brake member 430 to move and combine with the rotor 350, the brake member 430 specifically combines with the friction member 330 to realize braking. Through the cooperation between the friction member 330 and the braking member 430, the braking effect can be better guaranteed.

Preferably, the manual control mechanism 500 includes a manual control member 51, a manual driving member 52 and an elastic member 53, and the manual control member 51 is rotatably and movably mounted on the end cap 340. The manual driving element 52 is connected to the manual control element 51, and the manual control element 51 can drive the manual driving element 52 to move, so that the manual driving element 52 presses the braking element 430 to separate the braking element 430 from the friction element 330. The elastic member 53 connects the end cap 340 and the manual driving member 52, respectively, to apply a pushing force to the manual driving member, so as to separate the manual driving member 52 from the braking member 430.

That is to say, in this embodiment, the manual control element 51 can convert a rotational motion into a linear motion, and when an operator manipulates the manual control element 51 to rotate, the manual control element 51 can drive the manual driving element 52 to move, so that the manual driving element 52 presses the brake element 430 (or separates from the brake element 430), and thus the position of the brake element 430 can be controlled by manually controlling the manual control element 51 to rotate, and manual unlocking is achieved.

Specifically, the manual control element 51 has a first control state and a second control state after the end cover 340 rotates relatively. In the first control state, the elastic member 53 is stretched to space the manual driving member 52 and the braking member 430 from each other. In the second control state, the manual control element 51 presses the manual driving element 52, and the elastic element 53 is compressed to make the manual driving element 52 press the braking element 430, so as to separate the braking element 430 from the friction element 330. That is, the manual control element 51 has at least two rotation position states, when the manual control element 51 rotates to the first control state, the manual control element 51 does not press the manual driving element 52, so that the manual driving element 52 can be spaced from the braking element 430 under the driving of the elastic force of the elastic element 53, and in this state, the manual control mechanism 500 does not affect the electromagnetic brake 400, so that the electromagnetic brake 400 can normally operate. When the manual control element 51 is rotated to the second control state, the manual control element 51 presses the manual driving element 52, so as to compress the elastic element 53, and at the same time, the manual driving element 52 moves toward the side close to the brake element 430, so that the manual driving element 52 abuts against and presses the brake element 430, so that the brake element 430 moves, the brake element 430 is separated from the friction element 330, and the rotor 350 can be smoothly operated by manually forcibly unlocking.

It can be understood that, in the brake motor in the prior art, when the power supply in the electromagnetic brake is exhausted or fails, the brake piece cannot be controlled to move, so that the rotor cannot be unlocked, the brake motor is always in a braking state, and normal use is affected.

In this embodiment, the manual control mechanism 500 is provided, so that when the power supply of the electromagnetic brake 400 is exhausted or fails, an operator can drive the brake member 430 by manually controlling the manual control member 51 to drive the manual driving member 52 to move, so that the brake member 430 is separated from the friction member 330, and the normal operation of the brake motor is ensured. Moreover, the elastic member 53 is disposed in the manual control mechanism 500, and when the brake member 430 is not required to be manually controlled, the elastic member 53 can drive the manual driving member 52 to move to a corresponding position, which does not affect the normal use of the electromagnetic brake 400.

Preferably, the manual operating mechanism 500 further includes a cover 54 fixed to an outer side of the end cap 340 and a rolling ball 55 disposed between the cover 54 and the manual control element 51, the cover 54 is provided with a first rolling ball groove 541 for partially accommodating the rolling ball 55, the manual control element 51 is provided with a second rolling ball groove 511 for partially accommodating the rolling ball 55, the first rolling ball groove 541 and/or the second rolling ball groove 511 extend along a rotation direction of the manual control element 51, and a depth of the first rolling ball groove 541 and/or the second rolling ball groove 511 increases or decreases along the rotation direction of the manual control element 51. Specifically, in the present embodiment, only the second rolling ball groove 511 extends along the rotation direction of the manual control member 51, and the depth increases or decreases. When the manual control element 51 is rotated to the first control state, the rolling ball 55 is located in the deeper region of the second rolling ball groove 511, and the distance between the manual control element 51 and the cover 54 is shorter. When the manual control element 51 is rotated to the second control state, the rolling ball 55 is located in the shallow depth area of the second rolling ball groove 511, and the rolling ball 55 presses the manual control element 51, so that the manual control element 51 presses the manual driving element 52, and the brake element 430 is separated from the friction element 330.

Similarly, in other embodiments, only the first rolling ball groove 541 extends along the rotation direction of the manual control element 51, and the depth increases or decreases. Or the first rolling ball groove 541 and the second rolling ball groove 511 both extend along the rotation direction of the manual control element 51, and the depth increases or decreases. The specific structure of the manual control element 51 rotatably and movably mounted on the end cap 340 may also adopt other required structures, such as a ramp structure disposed between the manual control element 51 and the end cap 340, and the ramp structure is used to guide the manual control element 51 to move linearly during the rotation process. Or a screw rod and the like can be adopted between the manual control element 51 and the end cover 340. In the embodiment, the rolling ball groove and the rolling ball 55 are adopted, so that the rolling ball 55 is in point contact with the manual control element 51 and the cover 54, the required machining precision is low, and the machining difficulty is effectively reduced.

Preferably, the manual control mechanism 500 further comprises a torsion spring 56, and the torsion spring 56 is respectively connected to the end cap 340 and the manual control element 51 to apply a boosting force to the manual driving element 52 to balance a portion of the boosting force.

It will be understood that when the operator needs to use the manual control member 51, turning the manual control member 51 to unlock the brake member 430 needs to overcome the resistance exerted in the electromagnetic brake 400 and by the elastic member 53. In this embodiment, the torsion spring 56 is arranged to provide a certain boosting force to balance the resistance applied by the elastic member 53 and the electromagnetic brake 400, so that the manual control member 51 can be rotated by applying a smaller force to the operator, thereby facilitating the use of the operator and ensuring a smoother and more stable operation process.

In order to avoid the accidental rotation of the manual control member 51, the manual control member 51 is better kept in the first control state or the second control state. The end cap 340 may be provided with a snap structure, so that the first control state or the second control state is better maintained by the snap structure correspondingly being snapped in a corresponding area of the manual control element 51. If the end cap 340 can be provided with a spring structure, the manual control element 51 can be provided with two slots, and when the manual control element 51 rotates to different states, the spring structure is correspondingly fastened in the corresponding slot to maintain the state of the manual control element 51.

Preferably, the manual control element 51 is located outside the end cap 340, a portion of the manual driving element 52 is located outside the end cap 340, and another portion of the manual driving element 52 is disposed through the end cap 340 for pressing the brake element 430. Therefore, through the structure, the manual control element 51 is convenient for an operator to apply force and control, and meanwhile, the reliability of the whole structure is better guaranteed.

Preferably, the manual driving element 52 includes a plate 521 and a driving post 522, the plate 521 is fixedly connected to the manual control element 51, one end of the driving post 522 is connected to the plate 521, the other end of the driving post 522 is inserted into the end cap 340 to extrude the brake element 430, and two ends of the elastic element 53 are respectively connected to the plate 521 and the end cap 340. Therefore, the manual control mechanism 500 can be better ensured to push the brake piece 430 in a pressing manner through the structure. Preferably, the driving columns 522 are arranged in a plurality, and the plurality of driving columns 522 are distributed on the plate 521 in an annular array, so that the force applied by the driving columns 522 to the braking piece 430 can be better balanced, and the braking piece 430 is prevented from deflecting after being stressed. Specifically, in the present embodiment, three driving columns 522 are provided.

Preferably, a decelerator 370 is disposed between the rotor 350 and the casing 320.

EXAMPLE five

The embodiment provides an electric vehicle, which comprises a vehicle body and a brake motor as described in the third embodiment or the fourth embodiment, wherein the brake motor is mounted on a wheel body of the vehicle body. Specifically, the electric vehicle may be a small electric vehicle such as an electric wheelchair, an electric bicycle, and an electric scooter.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. An electromagnetic brake is characterized by comprising a frame body, an electric control telescopic component, a control component and a brake piece;

the electric control telescopic assembly is arranged on the frame body;

the control assembly is rotatably and movably arranged on the frame body;

the brake piece is arranged on the control component;

the telescopic rod of the electric control telescopic assembly is arranged corresponding to the control assembly to provide driving force to enable the control assembly to rotate, so that the control assembly moves linearly to drive the brake piece to be combined with or separated from the rotor of the motor.

2. The electromagnetic brake of claim 1, wherein the control assembly comprises a control mechanism and a control lever;

the control mechanism is rotatably and movably arranged on the frame body;

the brake piece is arranged on the control rod;

3. The electromagnetic brake of claim 2, wherein the control assembly further comprises a master spring;

4. The electromagnetic brake of claim 3, wherein the control assembly further comprises a balancing spring;

the balance elastic pieces are respectively connected with the frame body and the control mechanism so as to apply assistance to the control rod and balance part of the driving force.

5. The electromagnetic brake of claim 4, further comprising a position retaining mechanism;

the position holding mechanism is arranged on the frame body and corresponds to the control mechanism so as to abut against the control mechanism and maintain the state of the control mechanism after rotation;

and/or, the position holding mechanism is arranged on the frame body and is arranged corresponding to the electric control telescopic assembly so as to adsorb the telescopic rod of the electric control telescopic assembly and maintain the state of the control mechanism after rotation.

6. The electromagnetic brake of claim 2, wherein the electronically controlled retraction assembly comprises a first electromagnet, a second electromagnet;

7. The electromagnetic brake of claim 6, wherein the control mechanism includes a first adjustment seat, a first connector, and a second connector;

the first adjusting seat is rotatably and movably arranged on the frame body;

the control rod is connected with the first adjusting seat.

8. The electromagnetic brake of claim 7, wherein the first connecting member includes a first connecting member body and a first connecting post, the first connecting member body is connected to the telescopic rod of the first electromagnet, the first connecting post is disposed on the first connecting member body, and the first connecting post is inserted into the first adjusting seat;

9. The electromagnetic brake of claim 8, wherein the first adjusting seat defines a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are located on opposite sides along a rotation direction of the first adjusting seat;

10. The electromagnetic brake according to claim 9, wherein the first connecting groove is concavely formed from an outer surface of the first connecting arm toward a direction close to the second connecting arm;

11. The electromagnetic brake according to claim 2, characterized in that a ball is disposed between the control mechanism and the frame, a first ball groove is disposed on the frame and partially receives the ball, a second ball groove is disposed on the control mechanism and partially receives the ball, the first ball groove and/or the second ball groove extend along the rotation direction of the control mechanism, and the depth of the first ball groove and/or the second ball groove increases or decreases along the rotation direction of the control mechanism.

12. The electromagnetic brake according to claim 11, wherein there are at least two first balls, two adjacent first balls are spaced from each other, and each first ball is provided with one first ball groove and one second ball groove;

13. The electromagnetic brake of claim 11, wherein the first ball groove includes a first receiving groove, a second receiving groove, and a first transition groove, the second receiving groove has a greater recess depth than the first receiving groove, the first transition groove communicates the first receiving groove with the second receiving groove, and a bottom wall of the first transition groove is an inclined surface, the bottom wall of the first receiving groove includes a first staying surface connected to the bottom wall of the first transition groove, the first staying surface is inclined inward of the first receiving groove relative to the bottom wall of the first transition groove, the bottom wall of the second receiving groove includes a second staying surface connected to the bottom wall of the first transition groove, the second staying surface is inclined outward of the second receiving groove relative to the bottom wall of the first transition groove;

14. Electromagnetic brake according to claim 2, characterized in that a thrust bearing is arranged between the control mechanism and the control lever in the movable direction of the control lever.

15. The electromagnetic brake of claim 1, further comprising a manual operating mechanism;

16. The electromagnetic brake of claim 15, wherein the electrically controlled retraction assembly, the control assembly and the brake element are mounted within the frame;

17. The electromagnetic brake of claim 16, wherein the seal comprises a seal ring and a seal cover;

the sealing ring is sleeved on the frame body;

18. The electromagnetic brake of claim 16, further comprising a position detector;

the position detector is mounted in the frame body to detect the first rotation control state and/or the second rotation control state of the manual manipulation mechanism.

19. The electromagnetic brake of claim 16, further comprising a limit stop;

20. A brake motor comprising a motor and an electromagnetic brake according to any one of claims 1 to 19;

the frame body is mounted on a stator of the motor.

21. The brake motor of claim 20, wherein the motor is an inner rotor motor, the frame is mounted to a housing of the motor, and a friction member is provided on a rotation shaft of the motor for engaging with the brake member.

22. An electric vehicle characterized by comprising a vehicle body and the brake motor according to any one of claims 20 and 21;

the brake motor is mounted on a wheel body of the vehicle body.