CN202867640U - Magnetofluid disc brake device - Google Patents

Magnetofluid disc brake device Download PDF

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Publication number
CN202867640U
CN202867640U CN 201220413524 CN201220413524U CN202867640U CN 202867640 U CN202867640 U CN 202867640U CN 201220413524 CN201220413524 CN 201220413524 CN 201220413524 U CN201220413524 U CN 201220413524U CN 202867640 U CN202867640 U CN 202867640U
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CN
China
Prior art keywords
brake
cylinder
buoyant
piston
magnetic fluid
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220413524
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Chinese (zh)
Inventor
林智勇
Original Assignee
林智勇
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Filing date
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Priority to CN 201220413524 priority Critical patent/CN202867640U/en
Application granted granted Critical
Publication of CN202867640U publication Critical patent/CN202867640U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a magnetofluid disc brake device which comprises a magnetofluid brake driving device and a brake device, wherein the magnetofluid brake driving device is composed of a brake cylinder, magnetofluid, a floating piece, an elastic component, an electromagnetic coil and a controller. The brake cylinder is composed of a cylinder body, a piston and a piston rod, wherein the piston is connected with the piston rod. When brake is conducted, the controller controls the electromagnetic coil to be powered on, the electromagnetic coil produces magnetic field, the magnetic field magnetizes the magnetofluid of the brake cylinder, so that the proportion of the magnetofluid is continuously increased, and the proportion of the magnetofluid is larger than that of the floating piece, so that the floating piece floats upwards and forces the piston to move, the piston overcomes elasticity of the elastic element and pushes the piston rod to move outwards the cylinder, the piston rod pushes a brake seat and a brake pad to move to a brake disc, and friction brake of the brake piece and the brake disc are conducted.

Description

The magnetic fluid disc brake apparatus
Technical field
The utility model relates to a kind of braking device, particularly a kind of magnetic fluid disc brake apparatus.
Background technique
The braking device of existing Motor Vehicle and many equipment; that the resistance that utilizes hydraulic system to drive brake block and brake disc friction brakes during brake; because the oil pipe of hydraulic system, Sealing are aging easily; Oil-pressure joint is easily loosening etc.; cause the faults such as the easy leakage of oil of hydraulic system, be unfavorable for the safety of braking, simultaneously; the generally use of hydraulic oil is unfavorable for environmental protection.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of magnetic fluid disc brake apparatus is provided, utilize the proportion of controller magnetic fluid, utilize buoyant member in magnetic fluid, be subject to buoyancy drive brake block implement the brake, a kind of braking device for motor vehicle that does not use hydraulic oil is provided; Simultaneously, the magnetic fluid disc brake apparatus also can be used for the brake of other machinery rotatingshafts.
The technological scheme that the utility model adopts is: the magnetic fluid disc brake apparatus comprises magnetic fluid brake drive unit and braking device, and magnetic fluid brake drive unit includes brake cylinder, magnetic fluid, buoyant member, elastic element, electromagnetic coil and controller; The brake cylinder includes cylinder body, piston and piston rod, and piston is connected with piston rod; Braking device includes brake mount and brake block, brake mount is connected with brake block, piston rod is connected with brake mount, magnetic fluid and buoyant member are located in the cylinder body, elastic element is located between the cylinder top of piston and cylinder body, electromagnetic coil is installed on the brake cylinder, and controller is provided with guide line and is connected with electromagnetic coil; The lower end surface of piston is the inclined-plane, and buoyant member is positioned at the lower end of the lower end surface of piston, and an end of buoyant member contacts with the cylinder bottom of brake cylinder, and the other end of buoyant member contacts with the lower end surface of piston; When buoyant member floated, buoyant member was pressed the inclined-plane of piston, and piston and piston rod are moved, and utilized piston rod to move to drive brake mount and brake block moves, and utilized brake block and brake disc friction brake; Perhaps, buoyant member is provided with the inclined-plane of exerting pressure, and piston is provided with the inclined-plane of exerting pressure with buoyant member and contacts, when buoyant member rises, utilize the inclined-plane of exerting pressure of buoyant member to press piston and piston rod to move, utilize piston rod to move to drive brake mount and brake block moves, utilize brake block and brake disc friction brake; During use, the brake cylinder is fixedly connected with vehicle frame, and brake block is positioned at the next door of brake disc, and controller is connected with brake switch or braking circuit, and brake switch or braking circuit are connected with brake is foot-operated; When the magnetic fluid disc brake apparatus used as the brake of other equipment, the brake cylinder was fixedly connected with the vehicle frame of equipment, and brake block is installed on the next door of the brake disc of equipment.
During use, utilize the foot-operated control of the brake brake switch of Motor Vehicle, utilize brake switch that brake signal is transferred to controller; During brake, the energising of controller control electromagnetic coil, electromagnetic coil produces magnetic field, to the brake magnetic fluid magnetization of cylinder of magnetic field constantly increases the proportion of magnetic fluid, makes the proportion of magnetic fluid greater than the proportion of buoyant member, the buoyant member compressing piston that upwards floats is moved, the elastic force push piston bar that piston overcomes elastic element moves outside cylinder, and piston rod pushes away brake mount and brake block moves to brake disc, makes brake block and brake disc friction brake; When brake was removed, the brake switch ring off signal of will brake was transferred to controller, and controller control electromagnetic coil cuts off the power supply, the magnetic field of electromagnetic coil disappears, the magnetic fluid of brake cylinder loses magnetization, and the proportion of magnetic fluid returns to unmagnetized front state, and the proportion of magnetic fluid is less than the proportion of buoyant member, buoyant member sinks, piston resets under the elastic force effect of elastic element, and the piston driving piston rod resets, and piston rod drives brake mount and brake block resets, make brake block leave brake disc, brake is removed.
The beneficial effects of the utility model are: magnetic fluid disc brake apparatus utilization brake rides and brake switch is transferred to controller with brake signal, utilize the magnetic field of magnetic fluid in controller and the solenoid controlled brake cylinder, utilize the buoyancy of the interior buoyant member of changes of magnetic field control magnetic fluid of magnetic fluid, utilize buoyancy-driven piston and the piston rod of buoyant member to move, utilize piston rod to drive brake mount and brake block and brake disc contact friction brake, implemented to utilize the purpose of controller control brake; Utilize the size of controller control buoyancy, implemented the size of controller control brake block brake weight, to reach the callipers brake car with the purpose of automation control, the magnetic fluid disc brake apparatus does not use hydraulic oil, is conducive to save limited hydraulic oil resource, is conducive to environmental protection; Simultaneously, the magnetic fluid disc brake apparatus also can be used for the brake of other machinery.
Description of drawings
Fig. 1 is the structural representation of magnetic fluid disc brake apparatus.
Embodiment
Below in conjunction with accompanying drawing the utility model is further detailed:
The structural representation of magnetic fluid disc brake apparatus shown in Figure 1, the magnetic fluid disc brake apparatus comprises magnetic fluid brake drive unit 1 and braking device 2, and magnetic fluid brake drive unit 1 includes brake cylinder 3, magnetic fluid 4, buoyant member 5, elastic element 6, electromagnetic coil 7 and controller 8; Brake cylinder 3 includes cylinder body 9, piston 10 and piston rod 11, and piston 10 is connected with piston rod 11; Braking device 2 includes brake mount 12 and brake block 13, brake mount 12 is connected with brake block 13, piston rod 11 is connected with brake mount 12, magnetic fluid 4 and buoyant member 5 are located in the cylinder body 9, elastic element 6 is located between the cylinder top 14 of piston 10 and cylinder body 9, electromagnetic coil 7 is installed on brake cylinder 3, and controller 8 is provided with guide line 15 and is connected with electromagnetic coil 7; The lower end surface 16 of piston 10 is the inclined-plane, buoyant member 5 is positioned at the lower end 19 of the lower end surface 16 of piston 10, buoyant member is sunken to the bottom of magnetic fluid 4 for 5 times, and an end of buoyant member 5 contacts with the cylinder bottom 18 of brake cylinder 3, and the other end of buoyant member 5 contacts with the lower end surface 16 of piston 10; When buoyant member 5 floated, buoyant member 5 was pressed the inclined-plane of pistons 10, and piston 10 and piston rod 11 are moved, and utilized piston rod 11 to move to drive brake mount 12 and brake block 13 moves, and utilized brake block 13 and brake disc 21 friction brakes; Perhaps, buoyant member 5 is provided with the inclined-plane of exerting pressure, piston 10 is provided with the inclined-plane of exerting pressure with buoyant member 5 and contacts, when buoyant member 5 rises, utilize the inclined-plane of exerting pressure of buoyant member 5 to press piston 10 and piston rod 11 to move, utilize piston rod 11 to move to drive brake mount 12 and brake block 13 moves, utilize brake block 13 and brake disc 21 friction brakes; During use, brake cylinder 3 is fixedly connected with vehicle frame 20, and brake block 2 is positioned at the next door of brake disc 21, and controller 8 is connected with brake switch or braking circuit, and brake switch or braking circuit are connected with brake is foot-operated.
Drive the braking device brake in order to implement to utilize buoyant member 5 to float, the distance of the cylinder bottom 18 of brake cylinder 3 is arrived in the upper end 17 of the lower end surface 16 of piston 10 less than the lower end 19 of the lower end surface 16 of piston 10 to the distance of the cylinder bottom 18 of brake cylinder 3, buoyant member 5 is between the lower end surface 16 and cylinder bottom 18 of piston 10, the size of buoyant member 5 arrives the distance of the cylinder bottom 18 of brake cylinder 3 greater than the upper end 17 of piston 10 lower end surfaces 16, when floating with assurance buoyant member 5, buoyant member 5 can press piston 10 and piston rod 11 to move, and piston rod 11 promotes the brake block 13 and brake disc 21 friction brakes of braking device 2; Piston rod 11 is vertical with the brake plane of brake disc 21, and the brake plane parallel of the brake lining of brake block 13 and brake disc 21 is to improve the effect of brake.
In order to implement the bidirectional brake of brake disc 21, magnetic fluid brake drive unit 1 includes left magnetic fluid brake drive unit 22 and right magnetic fluid brake drive unit 23, braking device 2 includes left braking device 24 and right braking device 25, the left brake cylinder 27 of left magnetic fluid brake drive unit 22 is fixedly connected with cylinder seat 28, cylinder seat 28 is fixedly connected with vehicle frame 20, and the right brake cylinder 29 of right magnetic fluid brake drive unit 23 is fixedly connected with cylinder seat 28; The left brake mount 30 of left braking device 24 is connected with the left piston bar 31 of left magnetic fluid brake drive unit 22, and the left brake block 32 of left braking device 24 is positioned at the left side of brake disc 21; The right brake mount 33 of right braking device 25 is connected with the right piston rod 34 of right magnetic fluid brake drive unit 23, and the right brake block 35 of right braking device 25 is positioned at the right of brake disc 21.
In order to prevent that brake mount 12 and brake block 13 from rotating, brake cylinder 3 is provided with guide holder 36, and guide holder 36 is provided with guide rail, and brake mount 12 is provided with guide surface, the guide rail of guide holder 36 is connected movingly with the guide surface of brake mount 12, and guide holder 36 is fixedly connected with brake cylinder 3.
In order to regulate brake block 13 to the distance of brake disc 21, guide holder 36 is provided with screw 37, screw 37 is provided with screw 38, screw 38 is connected movingly with screw 37, screw 38 contacts with brake mount 12, screw 38 is provided with locking nut 26, and the elastic force promotion brake mount 12 that overcomes elastic element 6 for rotation screw 38 moves, and is used for regulating the distance of brake block 13 and brake disc 21.
Utilize controller control brake in order to reach, controller 8 is connected with electromagnetic coil 7, the buoyancy of buoyant member 5 is directly proportional with the proportion of magnetic fluid 4, and the proportion of magnetic fluid 4 is directly proportional with the magnetic intensity that electromagnetic coil 7 produces, and the magnetic intensity of electromagnetic coil 7 is directly proportional with the electric current that electromagnetic coil 7 passes through; 11 pairs of brake mounts 12 of piston 10 and piston rod and brake block 13 applied pressures are directly proportional with the buoyancy of buoyant member 5, and 11 pairs of brake mount 12 applied pressures of 13 pairs of brake disc 21 applied pressures of brake block and piston rod are directly proportional; Controller 8 is connected with brake switch or braking circuit, electric current by electromagnetic coil 7 is controlled by controller 8, utilize controller 8 controls by the electric current of electromagnetic coil 7, utilize the magnetic intensity by the Current Control electromagnetic coil 7 of electromagnetic coil 7, utilize the proportion of the magnetic intensity control magnetic fluid 4 of electromagnetic coil 7, utilize the buoyancy of the specific gravity control buoyant member 5 of magnetic fluid 4, utilize the buoyancy control piston rod 11 of buoyant member 5 to put on the pressure of brake block 13, utilize 21 brakes of brake block 13 crimping brake discs, to reach the purpose of utilizing brake switch or braking circuit control brake.
In order to implement to utilize the purpose that brake is foot-operated and controller control is braked, controller 8 is connected with angle displacement sensor, angle displacement sensor is connected with brake is foot-operated, the angle that angle displacement sensor rotates is directly proportional with the foot-operated angle that swings of brake, controller 8 according to the signal of angle displacement sensor input to electromagnetic coil 7 output currents, controller 8 is directly proportional with the foot-operated angle that swings of brake to the electric current of electromagnetic coil 7 outputs, utilize the foot-operated angle control that swings of brake by the electric current of electromagnetic coil 7, utilize the magnetic intensity by the Current Control electromagnetic coil 7 of electromagnetic coil 7, utilize the proportion of the magnetic intensity control magnetic fluid 4 of electromagnetic coil 7, utilize the buoyancy of the specific gravity control buoyant member 5 of magnetic fluid 4, utilize the buoyancy control piston rod 11 of buoyant member 5 to put on the pressure of brake block 13, utilize 21 brakes of brake block 13 crimping brake discs, to reach the purpose of utilizing the foot-operated control brake of brake.
In order to reduce ferromagnet to the interference in magnetic field, brake cylinder 3 is non-ferromagnetic body, and non-ferromagnetic body includes stainless steel, Cuprum alloy and aluminum alloy.
Described buoyant member 5 is in the 3 interior risings of brake cylinder, and buoyant member 5 presses piston 10 to move horizontally; Buoyant member 5 descends, and piston 10 resets under the effect of elastic element 6 elastic force.
Described buoyant member 5 is actively tied in the magnetic fluid 4 of brake cylinder 3, and buoyant member 5 is connected movingly with the guide groove of brake cylinder 3, rotates when preventing from avoiding buoyant member 5 to float; When buoyant member 5 floats, utilize buoyant member 5 inclined-plane of exerting pressure to press piston 10 to move, utilize piston 10 and piston rod 11 drives brake mounts 12 and brake block 13 moves, utilize brake block 13 and brake disc 21 friction brakes.
The working principle of magnetic fluid disc brake apparatus is:
During driving, buoyant member 5 is positioned at 19 positions, lower end of the lower end surface 16 of brake cylinder 3 pistons 10, piston 10 is in the position of non-brake under the effect of elastic element 6 elastic force, the piston rod 11 that is connected with piston 10 drives brake mount 12 and brake block 13 moves to non-brake direction, makes brake block 13 leave brake disc 21;
During brake, brake switch is transferred to controller 8 with brake signal, the electric current of controller 8 control inputs electromagnetic coils 7, the magnetic intensity that electromagnetic coil 7 produces increases with the increase of electric current, the proportion that is sealed in the magnetic fluid 4 of brake cylinder 3 increases with the increase of magnetic intensity, behind the proportion of proportion greater than buoyant member 5 of magnetic fluid 4, buoyant member 5 floats, the buoyancy of buoyant member 5 increases with the increase of the proportion of magnetic fluid 4, utilize buoyant member 5 pushing piston 10 inclined-planes, utilize the elastic force pushing piston 10 of the buoyancy overcoming elastic element 6 of buoyant member 5 to move to the brake direction, the piston rod 11 drive brake mounts 12 and the brake block 13 that are connected with piston 10 are moved to the brake direction, utilize brake block 13 to clamp brake disc 21 brakes, the pressure that brake block 13 clamps brake disc 21 is directly proportional with the buoyancy of buoyant member 5, to reach the purpose of utilizing brake switch and controller control brake;
When brake is removed, the brake switch ring off signal of will braking is transferred to controller 8, controller 8 controls reduce the electric current of input electromagnetic coil 7, the magnetic intensity that electromagnetic coil 7 produces reduces with the minimizing of electric current, the proportion that is sealed in the magnetic fluid 4 of brake cylinder 3 reduces with the minimizing of magnetic intensity, after the proportion of magnetic fluid 4 is less than the proportion of buoyant member 5, buoyant member 5 sinks, the buoyancy of buoyant member 5 reduces with the minimizing of the proportion of magnetic fluid 4, piston 10 resets under the effect of elastic element 6 elastic force and moves to non-brake direction, the piston rod 11 drive brake mounts 12 and the brake block 13 that are connected with piston 10 are moved to non-brake direction, make brake block 13 leave brake disc 21, to reach the purpose of utilizing brake switch and controller to remove brake.

Claims (10)

1. magnetic fluid disc brake apparatus, it is characterized in that: described magnetic fluid disc brake apparatus comprises magnetic fluid brake drive unit (1) and braking device (2), and magnetic fluid brake drive unit (1) includes brake cylinder (3), magnetic fluid (4), buoyant member (5), elastic element (6), electromagnetic coil (7) and controller (8); Brake cylinder (3) includes cylinder body (9), piston (10) and piston rod (11), and piston (10) is connected with piston rod (11); Braking device (2) includes brake mount (12) and brake block (13), brake mount (12) is connected with brake block (13), piston rod (11) is connected with brake mount (12), magnetic fluid (4) and buoyant member (5) are located in the cylinder body (9), elastic element (6) is located between the cylinder top (14) of piston (10) and cylinder body (9), electromagnetic coil (7) is installed on brake cylinder (3), and controller (8) is provided with guide line (15) and is connected with electromagnetic coil (7); The lower end surface (16) of piston (10) is the inclined-plane, buoyant member (5) is positioned at the lower end (19) of the lower end surface (16) of piston (10), be sunken to the bottom of magnetic fluid (4) under the buoyant member (5), one end of buoyant member (5) contacts with the cylinder bottom (18) of brake cylinder (3), and the other end of buoyant member (5) contacts with the lower end surface (16) of piston (10); Buoyant member (5) is when floating, buoyant member (5) is pressed the inclined-plane of piston (10), make piston (10) and piston rod (11) mobile, utilize piston rod (11) mobile drive brake mount (12) and brake block (13) mobile, utilize brake block (13) and brake disc (21) friction brake; Perhaps, buoyant member (5) is provided with the inclined-plane of exerting pressure, piston (10) is provided with the inclined-plane of exerting pressure with buoyant member (5) and contacts, when buoyant member (5) rises, utilize the inclined-plane of exerting pressure of buoyant member (5) to press piston (10) and piston rod (11) to move, utilize piston rod (11) mobile drive brake mount (12) and brake block (13) mobile, utilize brake block (13) and brake disc (21) friction brake; During use, brake cylinder (3) is fixedly connected with vehicle frame (20), brake block (2) is positioned at the next door of brake disc (21), and controller (8) is connected with brake switch or braking circuit, and brake switch or braking circuit are connected with brake is foot-operated.
2. magnetic fluid disc brake apparatus according to claim 1, it is characterized in that: the distance of the cylinder bottom (18) of brake cylinder (3) is arrived in the upper end (17) of the lower end surface (16) of described piston (10) less than the lower end (19) of the lower end surface (16) of piston (10) to the distance of the cylinder bottom (18) of brake cylinder (3), buoyant member (5) is positioned between the lower end surface (16) and cylinder bottom (18) of piston (10), the size of buoyant member (5) arrives the distance of the cylinder bottom (18) of brake cylinder (3) greater than the upper end (17) of piston (10) lower end surface (16), to guarantee that buoyant member (5) is when floating, buoyant member (5) can press piston (10) and piston rod (11) to move, and piston rod (11) promotes the brake block (13) and brake disc (21) friction brake of braking device (2).
3. magnetic fluid disc brake apparatus according to claim 1, it is characterized in that: described magnetic fluid brake drive unit (1) includes left magnetic fluid brake drive unit (22) and right magnetic fluid brake drive unit (23), braking device (2) includes left braking device (24) and right braking device (25), the left brake cylinder (27) of left magnetic fluid brake drive unit (22) is fixedly connected with cylinder seat (28), cylinder seat (28) is fixedly connected with vehicle frame (20), and the right brake cylinder (29) of right magnetic fluid brake drive unit (23) is fixedly connected with cylinder seat (28); The left brake mount (30) of left braking device (24) is connected with the left piston bar (31) of left magnetic fluid brake drive unit (22), and the left brake block (32) of left braking device (24) is positioned at the left side of brake disc (21); The right brake mount (33) of right braking device (25) is connected with the right piston rod (34) of right magnetic fluid brake drive unit (23), and the right brake block (35) of right braking device (25) is positioned at the right of brake disc (21).
4. magnetic fluid disc brake apparatus according to claim 1, in order to prevent that brake mount (12) and brake block (13) from rotating, it is characterized in that: described brake cylinder (3) is provided with guide holder (36), guide holder (36) is provided with guide rail, brake mount (12) is provided with guide surface, the guide rail of guide holder (36) is connected movingly with the guide surface of brake mount (12), and guide holder (36) is fixedly connected with brake cylinder (3).
5. magnetic fluid disc brake apparatus according to claim 4, in order to regulate brake block (13) to the distance of brake disc (21), it is characterized in that: described guide holder (36) is provided with screw (37), screw (37) is provided with screw (38), screw (38) is connected movingly with screw (37), screw (38) contacts with brake mount (12), screw (38) is provided with locking nut (26), the elastic force promotion brake mount (12) that overcomes elastic element (6) for rotation screw (38) is mobile, the distance that is used for regulating brake block (13) and brake disc (21).
6. magnetic fluid disc brake apparatus according to claim 1, it is characterized in that: described piston rod (11) is vertical with the brake plane of brake disc (21), the brake plane parallel of the brake lining of brake block (13) and brake disc (21).
7. magnetic fluid disc brake apparatus according to claim 1, it is characterized in that: described brake cylinder (3) is non-ferromagnetic body, and non-ferromagnetic body includes stainless steel, Cuprum alloy and aluminum alloy.
8. magnetic fluid disc brake apparatus according to claim 1, it is characterized in that: described elastic element (6) is Compress Spring, and perhaps, elastic element (6) is the elastic caoutchouc cover.
9. magnetic fluid disc brake apparatus according to claim 1 is characterized in that: described buoyant member (5) rises in brake cylinder (3), and buoyant member (5) pressure piston (10) moves horizontally; Buoyant member (5) descends, and piston (10) resets under the effect of elastic element (6) elastic force.
10. magnetic fluid disc brake apparatus according to claim 1, it is characterized in that: described buoyant member (5) is actively tied in the magnetic fluid (4) of brake cylinder (3), buoyant member (5) is connected movingly with the guide groove of brake cylinder (3), prevents from avoiding buoyant member (5) to rotate when floating; Buoyant member (5) is when floating, utilize buoyant member (5) inclined-plane of exerting pressure to press piston (10) mobile, utilize piston (10) and piston rod (11) drive brake mount (12) and brake block (13) mobile, utilize brake block (13) and brake disc (21) friction brake.
CN 201220413524 2012-08-11 2012-08-11 Magnetofluid disc brake device Expired - Fee Related CN202867640U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220413524 CN202867640U (en) 2012-08-11 2012-08-11 Magnetofluid disc brake device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220413524 CN202867640U (en) 2012-08-11 2012-08-11 Magnetofluid disc brake device

Publications (1)

Publication Number Publication Date
CN202867640U true CN202867640U (en) 2013-04-10

Family

ID=48034362

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220413524 Expired - Fee Related CN202867640U (en) 2012-08-11 2012-08-11 Magnetofluid disc brake device

Country Status (1)

Country Link
CN (1) CN202867640U (en)

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130410

Termination date: 20130811

C17 Cessation of patent right