WO2011149230A2

WO2011149230A2 - Mr-fluid damper and method for assemblying same

Info

Publication number: WO2011149230A2
Application number: PCT/KR2011/003760
Authority: WO
Inventors: 선철곤
Original assignee: 주식회사 썬 프레인 코
Priority date: 2010-05-28
Filing date: 2011-05-23
Publication date: 2011-12-01
Also published as: WO2011149230A3

Abstract

The present invention relates to an MR-fluid damper comprising a rod (12) placed inside an out-cylinder (1) that controls the damping capability by changing the strength of the magnetic field, wherein a coil (8) that can be turned on/off by electricity is mounted between the axial-radial directions of the out-cylinder (1) and the rod (12), and an MR-fluid that becomes magnetic through the coil (8) is embedded between the axial-radial directions of the coil (8) and the rod (12), wherein sequentially provided, in an axial direction, are: a fourth yoke (3), a bush (4), an oil seal (5), a third yoke (6), an O-ring (7), a coil (8), an O-ring (7), a second yoke (9), an O-ring (7), a coil (8), an O-ring (7), a first yoke (10), an oil seal (5), a bush (4), a friction ring (11) and a case (13), such that the MR-fluid damper of the present invention enables easy assembly of the damper, shorter assembly time compared to conventional dampers, easy insertion of MR-fluid, better adjustment of damping capability according to different situations, and reduction of resonance and noise of the device having the damper.

Description

MR fluid damper and its assembly method

The present invention relates to a jig-type MR fluid damper, to improve the structure of the damper connected to the tub to absorb the vibration of the washing machine tub generated during operation of the washing machine, it is possible to adjust the damping force according to the situation, the resonance of the washing machine And a jig-type MR fluid damper for reducing noise.

In addition, the present invention relates to a tube-type MR fluid damper, to improve the structure of the damper connected to the tub to absorb the vibration of the washing machine tub generated during operation of the washing machine, it is possible to adjust the damping force according to the situation, The present invention relates to a tube-type MR fluid damper that reduces the resonance and noise of a washing machine.

In addition, the present invention relates to a method for assembling a jig-type MR fluid damper, to improve the structure of the damper connected to the tub to absorb the vibration of the washing machine tub generated during operation of the washing machine, it is possible to adjust the damping force according to the situation The present invention relates to a method for assembling a jig-type MR fluid damper to reduce resonance and noise of a washing machine.

In addition, the present invention relates to a method for assembling an inner tube type MR fluid damper, and improves the structure of the damper connected to the tub to absorb the vibration of the washing machine tub generated during operation of the washing machine, the adjustment of the damping force according to the situation The present invention relates to a method for assembling an inner tube type MR fluid damper capable of reducing resonance and noise of a washing machine.

In general, a damper is a device that weakens shock or vibration by using an elastic body such as a spring or rubber, and is applied to various technical fields such as a shock absorber, a braking device, and a washing machine of an automobile.

For example, the damper is applied to a conventional drum washing machine, which is installed between a drum support tub and a case bottom provided to support the drum in which the damper rotates in a three-point or two-point manner to absorb vibration and shock during operation of the drum. To be installed.

As shown in FIG. 1, the conventional damper 200 reciprocates a friction pad (not shown) in which the rod 220 elastically supported by the spring 232 is fixed to the inside of the cylinder 210. Or frictionally configured to attenuate the shock or vibration applied to the rod) or hydraulically so that an impact-relaxing action is performed on the rod 220 by damping means such as oil (not shown) injected into the cylinder 210. do.

Here, the spring 232 is a structure in which both ends of the spring sheet 231 and the spring washer 233 are supported.

However, the conventional hydraulic damper has a problem that the operation noise occurs due to friction with the rod along with environmental pollution using oil as a damping means, the friction damper also causes the rod to generate operating noise on the friction pad side of the cylinder . In addition, the hydraulic damper and the friction damper had a problem in that it is impossible to control the damping force.

In order to solve this problem, a technique for efficiently adjusting the damping force using an MR fluid has been described.

MR fluid magneto-Rheological is the suspension of micron-sized ferromagnetic particles in a carrier fluid. Flow control with properties similar to automotive lubricants. However, by applying a magnetic field, the fluidity is immediately changed to a state like peanut butter.

Patent Publication No. 10-2008-0011952 describes Continuous Damping Control (hereinafter simply referred to as 'CDC') using a highly functional magnetic fluid that responds more quickly to vibrations transmitted from a road surface used in a conventional vehicle. The damper is a synthetic oil containing floating magnetized particles, and the damper using the MR fluid uses a phenomenon in which the apparent viscosity increases when the MR fluid passes through the magnetic field. . In other words, when the MR fluid flows into the magnetic field formed by the solenoid, the magnetized particles dispersed in the MR fluid are arranged in a chain structure under the influence of the magnetic field, and thus the damping increases as the yield shear stress of the fluid increases. . Therefore, the damper using the MR fluid can freely control the apparent viscosity and attenuation of the fluid by arbitrarily changing the strength of the magnetic field. Therefore, such a CDC damper using MR fluid can be preferably used in an electronically controlled suspension system.

In addition, patent application No. 10-2009-76100, which is a prior application of my own, describes a technique for efficiently adjusting the damping force of a damper installed in a washing machine using MR fluid.

2 is a cross-sectional view of a conventional MR fluid damper. As shown in FIG. 2, a general washing machine having a conventional MAL damper includes a case 1 ′ having an accommodating space therein, and is disposed along the front and rear directions inside the case 1 ′ to wash water therein. A tub 2 'provided to receive the drum, a drum 3' disposed inside the tub 2 ', and a damper 100 for damping vibration and impact on the tub 2'. It is composed.

Here, the case (1 ') has a rectangular parallelepiped shape formed with an opening to allow the laundry to enter and exit the front, the door (D) is provided to open and close the opening at one side edge.

The drum 3 'is coupled to be rotatable about a rotation axis formed along the front and rear directions of the case 1', and has a radius to move the laundry upward so that the laundry falls to the bottom. A plurality of lifts are provided which protrude along the direction and extend along the axial direction.

In addition, the upper side of the tub (2 ') is provided with a detergent supply unit (S) to supply detergent, the water supply pipe (P) having a water supply valve to supply the wash water to one side is connected. In addition, a drum driving motor (M) is installed in the rear region of the tub (2 ') so that the drum (3') can be driven to rotate, and a drain flow path (F) for draining the bottom of the tub (2 '). ) And a drain pump DP.

The upper region of the tub 2 'is provided with a plurality of support springs (not shown), one end of which is fixed to the case 1' so as to support the tub 2 ', and a tub 2' below the tub 2 '. Damper 100 is provided to reduce the vibration or load along the vertical direction of the).

As shown in FIG. 3, the damper 100 has one end fixed to the tub 2 ′ and one side penetrated into the other end of the cylinder 110 to be reciprocated. Installed between the other end of the cylinder 110 and the other end of the rod 120 so that the other end is fixed to the inner surface of the case (1 ') and the other side of the rod (120) The elastic means 130 and a plurality of solenoid coils 140 to attenuate the load or vibration by a variety of magnetic forces combined.

The cylinder 110 is connected to the lower side of the tub 2 'by the cap bolt 111, and the rod 120 is connected to the bottom of the inner surface of the case 1' by the end bolt 121. Fixed installation.

In addition, one end of the rod 120 is mounted by riveting the piston (122) in contact with the inner circumferential surface of the cylinder 110 to improve the operability through the O-ring (122a), a number of one side Inner guides 123 for supporting and guiding the points with the bearings B are arranged to be spaced apart at regular intervals.

The piston 122 has a through hole (not shown) in the direction of movement thereof, and transmits the vibration or load acting on the rod 120 while passing air pressure existing inside the cylinder 110 therein and outward. Can be attenuated.

In addition, a protrusion 124 is provided in the middle of the rod 120 to selectively contact one side surface of the spring seat 131 to be described later to limit the movement of the rod 120 together with the piston 122. Will be.

The elastic means 130 is a spring sheet 131, the other end of the cylinder 110 is press-fitted, one side is seated on the spring sheet 131 so as to be equal to the other end of the cylinder 110 elastically compressible coil A spring 132 and a spring washer 133 which is spaced apart from the spring sheet 131 by a predetermined distance to support the other side of the coil spring 132 and support the other side of the rod 120.

A non-woven fabric (not shown) is interposed between the spring sheet 131 and the other end of the cylinder 110 to block noise that may occur during vibration, and the other end of the cylinder 110. It is press-fit to the spring sheet 131 in a state of being installed on the circumferential surface.

In particular, the plurality of solenoid coil 140 is interposed on the outer circumferential surface of the cylinder 110 corresponding to the rod 120, but the terminal for selectively introducing an external power source according to the load or vibration applied to the rod 120 The magnetic force is generated by the T and the terminal socket TS, respectively, and the surface thereof is installed as surrounded by the insulator 141 so as to prevent loss of the magnetic force and short circuit.

Reference numeral '125', which is not described above, is a rod guide, and '126' is installed between the rod guide 125 and the inner guide 123, and is provided with a pocket for supplying hydraulic oil of the rod 120. It is an oil seal.

Hereinafter, the operation of the washing machine having the above-described magnetic damper will be described.

When power is supplied to the washing machine for washing or dehydration, a sensor (not shown) that detects vibration or load applied to the damper 100 of the present invention detects this, and according to the detection result, a control signal of a controller not shown. Power supply to the plurality of solenoid coil 140 is controlled by the.

To this end, the controller preferentially calculates a resistance value capable of attenuating vibration or load applied to the rod 120 in real time through an internal computing device. The control unit selectively controls the power supply to the plurality of solenoid coils 140 according to the operation value, thereby controlling the power supply to the single solenoid coil 140 or the plurality of solenoid coils 140.

That is, assuming that the three solenoid coils 140 shown can generate the strengths of the currents of 0.15A, 0.5A, and 2.0A, respectively, the damper 100 through the damping force by the respective solenoid coils 140. Of course, it is possible to reduce the vibration or load to be applied to the solenoid coil 140 of 0.15A and 0.5A is supplied with power to generate a magnetic strength of 0.65A, the damping force can be further increased. .

In addition, when the solenoid coil 140 having 0.15A and 2.0A is combined, the solenoid coil 140 may have a damping force of 2.15A, and the combination of three solenoid coils 140 may have a maximum damping force of 2.65A. Supply may be made.

Accordingly, the damper 100 is primarily damped by the coil spring 132, and is damped by the combined damping force by the plurality of solenoid coils 140 and the residual air pressure inside the cylinder 110. Vibration and shock are reduced during operation.

As such, a washing machine having a magnetic damper according to an embodiment generates different damping forces according to a combination of magnetic forces, thereby preventing environmental pollution and operation noise caused by a conventional hydraulic or friction damper, and preventing vibration and shock. Effective transmission attenuation can be achieved.

However, the conventional technologies are dampers because the coil of the ML fluid damper and the coil on and off by electricity and the MR fluid which becomes magnetic by the coil are not embedded concentrically about the axis but spaced apart from each other in the axial direction. The assembly was inconvenient, the assembly time is long, the injection of MR fluid is complex and inconvenient, and the effect of reducing the resonance and noise of the device equipped with the damper by adjusting the damping force in accordance with the situation is inferior.

In other words, there was no method for injecting MR fluid between the rod and the coil, and there was no way to separate the leader wire of the coil from the out cylinder when final assembly of the damper. there was.

Accordingly, in the present invention, a coil that is turned on and off by electricity is installed between the out cylinder 1 of the M fluid damper and the axial radius direction of the rod, and the M fluid that becomes magnetic by the coil is the shaft of the coil and the rod. The built-in radial direction facilitates the assembly of the damper, saves the assembly time compared to the conventional method, facilitates the injection of MR fluids, and enables the adjustment of the damping force according to the situation. And to provide a jig-type MR fluid damper to reduce the noise.

In addition, in the present invention, between the inner cylinder (2) of the MAL damper and the shaft radial direction of the rod is installed a coil that is turned on and off by electricity, the magnetic fluid is magnetic by the coil is the shaft of the coil and the rod The built-in radial direction facilitates the assembly of the damper, saves the assembly time compared to the conventional method, facilitates the injection of MR fluids, and enables the adjustment of the damping force according to the situation. And to provide a tube-type MR fluid damper to reduce the noise.

In addition, the present invention can effectively inject the MR fluid into the damper, and also by injecting the MD fluid first into the rod integrated type of the damper, and then assembled in the cylinder, and the leader wire of the coil through the hole of the yoke and the out cylinder, It is to provide a method of assembling a jig-type MR fluid damper that can be easily and simply assembled.

In addition, the present invention can effectively inject the MR fluid into the damper, and also first injects the MD fluid into the rod integral type of the damper and then assembled into the inner tube and the out cylinder, and the leader wire of the coil to the yoke and the inner tube and the out cylinder By deviating through the hole of the, it is to provide a method of assembling the inner tube type MR fluid damper that can be assembled easily and simply the MD fluid damper.

In order to achieve the above, the present invention is a rod 12 is installed in the out cylinder (1) of the jig-type MR fluid damper by varying the strength of the magnetic field to adjust the damping force, the out cylinder (1) and the rod (12) Coil 8 is turned on and off between the axial radius direction of the (), and the magnetic fluid magnetized by the coil 8 is between the axial radius direction of the coil (8) and the rod (12) It is characterized in that it is built in.

In addition, the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7), first 2 yoke (9), o-ring (7), coil (8), o-ring (7), first yoke (10), bush (4), oil seal (5), friction ring (11), case (13) Sequentially installed in the axial direction, one end of the jig supports the case and the other end of the jig is fixed by a nut.

In the present invention, the inner cylinder (2) is installed in the out cylinder (1) of the MR fluid damper by varying the strength of the magnetic field to adjust the damping force, the rod (12) is installed in the inner cylinder (2), Between the inner cylinder 2 and the shaft radial direction of the rod is provided a coil that is turned on and off by electricity, and the MAL fluid which becomes magnetic by the coil is embedded between the coil and the rod radial direction.

In addition, the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7), first 2 yoke, o-ring (7), coil (8), o-ring (7), first yoke (10), bush (4), oil seal (5), friction ring (11), case (13) sequentially Is installed.

The present invention relates to a method of assembling a jig-type MR fluid damper, the method of assembling a jig-type MR fluid damper, comprising: a step of assembling the rod 12 and each of the rod parts of the MR fluid damper; Injecting an MR fluid through an injection hole; After injecting the MR fluid and the remaining load parts by assembling the rod integral form and fixed with a jig and nut 19 to finish the AL fluid injection finishing step; 4 steps to securely lock the inlet with a screw bolt to prevent the leakage of the MR fluid; Includes; five steps of final assembly of the rod-integrated type to the cylinder.

The present invention relates to a method of assembling an inner tube type MR fluid damper, the method of assembling an inner tube type MR fluid damper, comprising the steps of: assembling the rod 12 and each rod part of the MR fluid damper; Injecting an MR fluid through an injection hole; After injecting the MR fluid and the remaining load parts by assembling the rod integral form and fixed with a jig and nut 19 to finish the AL fluid injection finishing step; 4 steps to securely lock the inlet with a screw bolt to prevent the leakage of the MR fluid; After making the inner tube integrated type in which the rod integrated type is inserted into the inner tube (2), loosen the nut (19) to remove the jig, insert the inner tube integrated type into the out cylinder (1), and then use the conventional rolling operation. It characterized in that it comprises a; five steps to solidify the binding between the parts.

Therefore, in the present invention, a coil that is turned on and off by electricity is installed between the out cylinder 1 of the MR fluid damper and the axial radius direction of the rod, and the MR fluid, which becomes magnetic by the coil, has the radial radius of the coil and the rod. By incorporating between the directions, it is easy to assemble the damper, the assembly time is saved compared to the conventional, the injection of MAL fluid is easy, and the damping force can be adjusted according to the situation, and the resonance of the device equipped with the damper and There is a remarkable effect of reducing noise.

In addition, in the present invention, between the inner cylinder (2) of the MAL damper and the shaft radial direction of the rod is installed a coil that is turned on and off by electricity, the magnetic fluid is magnetic by the coil is the shaft of the coil and the rod The built-in radial direction facilitates the assembly of the damper, saves the assembly time compared to the conventional method, facilitates the injection of MR fluids, and enables the adjustment of the damping force according to the situation. And a remarkable effect of reducing noise.

In addition, the present invention can effectively inject the MR fluid into the damper, and also by injecting the MD fluid first into the rod integrated type of the damper, and then assembled in the cylinder, and the leader wire of the coil through the hole of the yoke and the out cylinder, There is a remarkable effect that the jig-type MR fluid damper can be assembled easily and simply.

In addition, the present invention can effectively inject the MR fluid into the damper, and also first injects the MD fluid into the rod integral type of the damper and then assembled into the inner tube and the out cylinder, and the leader wire of the coil to the yoke and the inner tube and the out cylinder By disengaging through the hole of, there is a remarkable effect that can easily and simply assemble the MD fluid damper.

1 is a perspective view showing a washing machine damper using a conventional elastic body

2 is a cross-sectional view of a typical washing machine in which a damper is installed

3 is an enlarged cross-sectional view of the damper of FIG.

Figure 4 is an exploded view of the jig-type MR fluid damper of the present invention

5 is an assembly drawing of the present invention jig-type MR fluid damper

Figure 6 is a detailed view of the caulking (caulking) of the jig-type MR fluid damper of the present invention

7 is a drawing of the injection hole of the jig-type MR fluid damper of the present invention

8 is a flow diagram of the MR fluid injection of the jig-type MR fluid damper of the present invention.

9 is an exploded view of the present invention inner tube type MR fluid damper

10 is an assembly drawing of the present invention inner tube type MR fluid damper

* <Description of the symbols for the main parts of the drawings>

DESCRIPTION OF SYMBOLS 1: Out cylinder 2: Jig 3: Fourth yoke 4: Bush 5: Oil seal

6: 3rd yoke 7: O-ring 8: coil 9: 2nd yoke 10: 1st yoke

11 friction ring 12 rod 13 case 14 coil spring

15: Spring seat 16: End bolt 17: Screw bolt

18: lead wire 19: nut

The present invention relates to a jig-type MR fluid damper for changing the strength of the magnetic field to adjust the damping force, the rod 12 is installed in the out cylinder (1) of the MR fluid damper, the out cylinder (1) and the rod Between the axial radius direction of the (12) is provided a coil 8 that is turned on and off by electricity, the MR fluid which becomes magnetic by the coil 8 is the shaft radius of the coil 8 and the rod 12 It is a jig-type MR fluid damper, characterized in that it is built between the directions.

In order to seal the MR fluid, the fourth yoke 3, the bush 4, the oil seal 5, the third yoke 6, the o-ring 7, the coil 8, the o-ring 7, and the second yoke (9), O-ring (7), coil (8), O-ring (7), first yoke (10), oil seal (5), bush (4), friction ring (11), case (13) Are sequentially installed, one end of the jig supports the case and the other end of the jig is fixed by a nut.

In addition, the jig (2) is removed after the rolling operation of the conventional to compress the parts to eliminate the gap between the parts and bind to each other, the coil spring 14, the spring seat 15 and the end bolt 16 is installed on the rod do.

A hole is formed in the out cylinder 1, and the lead wire 18 of the coil 8 passes through the grooves of the third and

fourth yokes

6, 3, and then the out. It is drawn out through the hole of the cylinder (1).

When explaining the present invention by the accompanying drawings as follows. 1 is a perspective view showing a washing machine damper using a conventional elastic body, Figure 2 is a cross-sectional view of a conventional washing machine is installed damper, Figure 3 is an enlarged cross-sectional view of the damper of Figure 2, Figure 4 is an exploded view of the jig-type MR fluid damper of the present invention, 5 is an assembly view of the jig-type MR fluid damper of the present invention.

The present invention relates to a jig-type MR fluid damper for changing the strength of the magnetic field to adjust the damping force. In the configuration, a rod is installed in the out cylinder 1 of the MR fluid damper. The out cylinder has a hollow cylindrical shape to accommodate the rod, and is fixed to the lower side of the tub by bolts. A coil that is turned on and off by electricity is installed between the out cylinder 1 and the axial radius direction of the rod, and an MR fluid, which becomes magnetic by the coil, is embedded between the axial radius direction of the coil and the rod.

And the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7) 2 yoke, O-ring 7, coil 8, O-ring 7, the first yoke 10, friction ring 11, the case 15 are sequentially installed in the axial direction, one end of the jig is the case The other end of the jig is fixed by the nut (19). The jig serves to keep the parts of the rod assembly in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out.

In the embodiment of the present invention, two coils are installed as described above, and the number may be one or several according to the design of the damping force. The oil seal is positioned between the out cylinder 1 and the rod, and is provided with a pocket for supplying hydraulic oil to the circumferential surface of the rod. The friction ring serves to complement the damping force of the MR fluid. When no electricity is applied, the friction ring drives the damping force, and when energizing, the friction ring and the MR fluid combine to adjust the damping force. If necessary, the friction ring is removed, and the damping force can be realized using only the ML fluid. The case is formed of a step diameter consisting of a large diameter and a small diameter like a reducer connecting a large diameter and a small diameter at a pipe joint, and one end of the jig is coupled to the rod by applying a horizontal force in close contact with the small diameter of the case. Each part is in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out.

Then, the jig (2) is removed after the rolling operation of the conventional to compress the parts to eliminate the gap between the parts and bind to each other, the coil spring 14, the spring seat 15 and the end bolt 16 are sequentially on the rod Is installed. Fourth yoke (3), bush (4), oil seal (5), third yoke (6), o-ring (7), coil (8), o-ring (7), second through rolling rolling work The yoke, the o-ring 7, the coil 8, the o-ring 7, the first yoke 10, the friction ring 11, and the case 15 are sequentially tightly coupled so that the jig is no longer needed. The coil spring acts as an auxiliary damping together with the MR fluid, and if necessary, the spring is removed and the damping force can be realized using only the MD fluid.

On the other hand, a hole is formed in the out cylinder 1, and after the lead wire 18 of the coil 8 passes through the grooves of the third and

fourth yokes

6 and 3, the hole is formed. It is drawn out through the hole of the out cylinder 1.

Therefore, a coil is turned on and off by electricity between the out cylinder 1 of the MR fluid damper and the axial radius direction of the rod, and the MR fluid, which becomes magnetic by the coil, is located between the axial radius direction of the coil and the rod. Built-in, it is easy to assemble the damper, the assembly time is saved compared to the conventional, and the injection of MR fluid is easy, and the damping force can be adjusted according to the situation, to reduce the resonance and noise of the device equipped with the damper do.

The present invention relates to an inner tube type MR fluid damper that modulates a damping force by varying the strength of a magnetic field. An inner cylinder (inner tube, 2) is installed in an out cylinder 1 of the MR fluid damper, and the inner cylinder ( 2) In the rod 12 is installed, between the inner cylinder 2 and the radial direction of the rod is installed a coil is turned on and off by electricity, the magnetic fluid is magnetic by the coil is the coil It is characterized in that it is embedded between the axial radius direction of the rod.

In addition, the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7), first 2 yoke (9), o-ring (7), coil (8), o-ring (7), first yoke (10), oil seal (5), bush (4), friction ring (11), case (13) Are installed sequentially in the direction.

In addition, the coil spring 14, the spring seat 15 and the end bolt 16 are sequentially installed in the rod 12 portion exposed to the outside in the axial direction of the inner cylinder (2).

fourth yokes

6, 3, and then the out. It is drawn out through the hole of the cylinder 1.

When explaining the present invention by the accompanying drawings as follows. 1 is a perspective view showing a washing machine damper using a conventional elastic body, Figure 2 is a cross-sectional view of a general washing machine is installed damper, Figure 3 is an enlarged cross-sectional view of the damper of Figure 2, Figure 9 is an exploded view of the tube-type MR fluid damper of the present invention, 10 is an assembly view of the tube-type MR fluid damper of the present invention.

The present invention relates to a MR fluid damper for changing the strength of the magnetic field to adjust the damping force. In the configuration, the inner cylinder 2 is installed in the out cylinder 1 of the MR fluid damper. The out cylinder has a hollow cylindrical shape to accommodate the inner cylinder and the rod, and is fixed to the lower side of the tub by bolts. In addition, a rod 12 is installed in the inner cylinder 2, and a coil that is turned on and off by electricity is installed between the inner cylinder 2 and the axial radius direction of the rod, and the magnet is exhibited by the coil. MR fluid is embedded between the coil and the rod in the axial radius direction. The inner cylinder serves to keep the parts of the rod assembly in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out. And the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7) 2 yoke (9), o-ring (7), coil (8), o-ring (7), first yoke (10), bush (4), oil seal (5), friction ring (11), case (15) Are installed sequentially in the direction.

In the embodiment of the present invention, two coils are installed as described above, and the number may be one or several according to the design of the damping force. The oil seal is located between the inner cylinder 2 and the rod, and is provided with a pocket for supplying hydraulic oil to the circumferential surface of the rod. The friction ring serves to complement the damping force of the MR fluid. When no electricity is applied, the friction ring drives the damping force, and when energizing, the friction ring and the MR fluid combine to adjust the damping force. If necessary, the friction ring is removed, and the damping force can be realized using only the ML fluid. Like the reducer connecting large diameter and small diameter in the pipe joint, the case is formed step by step consisting of large diameter and small diameter.

In addition, the small diameter side of the case is exposed to the outside of the inner cylinder, and similarly, the coil spring 14 and the spring seat 15 are located on the rod 12 portion exposed to the outside in the axial direction of the inner cylinder 2 without the inner cylinder. And end bolts 16 are sequentially installed. The coil spring acts as an auxiliary damping together with the MR fluid, and if necessary, the spring is removed and the damping force can be realized using only the MD fluid.

fourth yokes

Therefore, between the inner cylinder (2) of the MR fluid damper and the axial radial direction of the rod is installed a coil that is turned on and off by electricity, the magnetic fluid magnetically by the coil between the coil and the axial radial direction of the rod Built-in, it is easy to assemble the damper, the assembly time is saved compared to the conventional, and the injection of MR fluid is easy, and the damping force can be adjusted according to the situation, to reduce the resonance and noise of the device equipped with the damper do.

The present invention relates to a method of assembling a jig-type MR fluid damper, the method of assembling a jig-type MR fluid damper, comprising: a step of assembling the rod 12 and each of the rod parts of the MR fluid damper; Injecting an MR fluid through an injection hole; After injecting the MR fluid and the remaining load parts by assembling the rod integral form and fixed with a jig and nut 19 to finish the AL fluid injection finishing step; 4 steps to securely lock the inlet with a screw bolt to prevent the leakage of the MR fluid; It is characterized in that it comprises a; five steps of the final assembly of the rod integral type in the cylinder.

In addition, each of the rod parts of the first step is the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7), 2 yoke, O-ring 7, coil 8, O-ring 7, the first yoke 10 is characterized in that the installation in the axial direction sequentially.

In addition, the remaining three-piece rod-integrated parts are characterized in that the oil seal 5, the bush 4, the friction ring 11 and the case 13 are sequentially installed in the axial direction.

The fifth step, which is the final assembly step, passes the leader wire of the coil 8 through the grooves of the third and

fourth yokes

6 and 3, and then passes through the hole of the out cylinder 1. It characterized in that it further comprises a method for leaving through.

In addition, after inserting the rod-integrated type of the fifth stage into the out cylinder, and solidifying the binding between the parts through the usual rolling operation, loosen the nut to remove the jig, and screw the end bolt to one end of the rod from which the jig is removed. After the caulking operation, the spring is inserted into the rod, characterized in that it further comprises a method for fastening the spring sheet so that the spring is not separated.

The present invention will be described in detail with reference to the accompanying drawings. 1 is a perspective view showing a washing machine damper using a conventional elastic body, Figure 2 is a cross-sectional view of a conventional washing machine is installed damper, Figure 3 is an enlarged cross-sectional view of the damper of Figure 2, Figure 4 is an exploded view of the jig type M fluid damper of the present invention, Figure 5 is an assembly view of the jig-type MR fluid damper of the present invention, Figure 6 is a detailed view of the caulking (caulking) of the jig-type MR fluid damper of the present invention, Figure 7 is an injection opening of the jig-type MR fluid damper of the present invention, Figure 8 is a flow diagram of MR fluid injection of the jig-type MR fluid damper of the present invention.

The jig-type MR fluid injection method first assembles the rod and each component and then sets the rod direction to be perpendicular. Each part has a fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7), second yoke, O-ring (7) , The coil 8, the O-ring 7, and the first yoke 10 are sequentially installed in the axial direction. Thereafter, a syringe containing an MR fluid is inserted through an injection hole in which a thread is formed. And while injecting the MR fluid through the syringe, it is injected until the visual confirmation that the MR fluid leaks through the first yoke (10). After confirming the leakage of MR fluid, the oil seal, the friction ring and the case are sequentially covered to form a rod integrated type. After that, the sealing of the MR fluid is fixed to the rod body with a jig and a nut to finish the AL fluid injection. The case is formed of a step diameter consisting of a large diameter and a small diameter like a reducer connecting a large diameter and a small diameter at a pipe joint, and one end of the jig is coupled to the rod by applying a horizontal force in close contact with the small diameter of the case. Each part is in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out.

Finally, screw the bolts securely to prevent the leakage of MR fluid through the inlet. The rod integrated type is finally assembled to the out cylinder.

In particular, during the final assembly, the leader wire of the coil passes through the '∪' shaped grooves of the third and fourth yokes (6) (3), and then is separated through the hole of the out cylinder.

Therefore, the present invention can effectively inject the MR fluid into the damper, and also by injecting the MD fluid into the rod integrated body of the damper first and then assembling it into the out cylinder, by separating the leader wire of the coil through the hole of the yoke and the out cylinder, It is easy and simple to assemble the MD fluid damper.

Referring to the detailed configuration of the M fluid damper of the present invention for the assembly of the present invention.

In the configuration, a rod is installed in the out cylinder 1 of the MR fluid damper. The out cylinder has a hollow cylindrical shape to accommodate the rod, and is filled with oil therein, and is fixed to the lower side of the tub by bolts. A coil that is turned on and off by electricity is installed between the out cylinder 1 and the axial radius direction of the rod, and an MR fluid, which becomes magnetic by the coil, is embedded between the axial radius direction of the coil and the rod.

And the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7) 2 yoke, o-ring (7), coil (8), o-ring (7), first yoke (10), oil seal (5), bush (4), friction ring (11) and case (13) sequentially It is installed as, one end of the jig supports the case and the other end of the jig is fixed by a nut (19). The jig serves to keep the parts of the rod assembly in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out.

MR fluid has a third yoke (6), an O-ring (7), a coil (8), an O-ring (7), a second yoke, an O-ring (7), a coil (8), and an O-ring in the axial radius direction. (7), embedded between the first yoke 10 and the rod 12, in the axial direction the third yoke (6), O-ring (7), coil (8), O-ring (7), second yoke, O-ring (7), coil (8), O-ring (7), the first yoke 10 is to be embedded in the site, the two oil seals (5) respectively installed on both sides in the axial outflow Is blocked. That is, the sealed space in which the MR fluid is stored is the third yoke (6), O-ring (7), coil (8), O-ring (7), second yoke, O-ring (7), coil (8), O-ring (7) , The space is formed between the first yoke 10 and the rod 12 and the two oil seals (5).

In the embodiment of the present invention, two coils are installed as described above, and the number may be one or several according to the design of the damping force. The oil seal seals between the out cylinder 1 and the rod, and is provided with a pocket for supplying hydraulic oil to the circumferential surface of the rod. The friction ring serves to complement the damping force of the MR fluid. When no electricity is applied, the friction ring drives the damping force, and when energizing, the friction ring and the MR fluid combine to adjust the damping force. If necessary, the friction ring is removed, and the damping force can be realized using only the ML fluid. The case is formed of a step diameter consisting of a large diameter and a small diameter like a reducer connecting a large diameter and a small diameter at a pipe joint, and one end of the jig is coupled to the rod by applying a horizontal force in close contact with the small diameter of the case. Each part is in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out.

Then, the jig (2) is removed after the rolling operation of the tube to compress the parts to eliminate the gap between the parts and bind to each other, the coil spring 14, the spring seat 15 and the end bolt 16 is installed on the rod do. Fourth yoke (3), bush (4), oil seal (5), third yoke (6), o-ring (7), coil (8), o-ring (7), second through rolling rolling work Yoke, O-ring (7), coil (8), O-ring (7), the first yoke (10), oil seal (5), bush (4), friction ring (11), case (13) is closely coupled in sequence No more jig needed. In other words, after inserting the rod integrated type into the outer cylinder and solidifying the binding between the parts through the usual rolling operation, the nut is removed to remove the jig, and the number of ends of the rod with the jig removed from the female thread formed at one end of the end bolt. After engaging with the screw portion, and then crimping the coupling portion to perform the caulking work to secure the bond, after inserting the spring on the outer periphery, to fasten the spring sheet so that the spring does not escape. In addition, the coil spring serves as an auxiliary damping together with the MR fluid, and if necessary, the coil spring can be removed and a damping force can be realized using only the MR fluid.

fourth yokes

The present invention relates to a method of assembling an inner tube type MR fluid damper, the method of assembling an inner tube type MR fluid damper, comprising the steps of: assembling the rod 12 and each rod part of the MR fluid damper; Injecting an MR fluid through an injection hole; Injecting the ML fluid and assembling the remaining rod parts to form a rod-integrated type and fixing them with a jig and a nut to finish the ML fluid injection; 4 steps to securely lock the inlet with a screw bolt to prevent the leakage of the MR fluid; After making the inner tube integrated type in which the rod integrated type is inserted into the inner tube (2), remove the jig by unscrewing the nut, insert the inner tube integrated type into the out cylinder (1), and then bond between the parts through the usual rolling operation. 5 steps to solidify; characterized in that it comprises.

In addition, the remaining three-piece rod-integrated parts are characterized in that the oil chamber 5, the bush 4, the friction ring 11 and the case 13 are sequentially installed in the axial direction.

In addition, the fifth step, which is a final assembly step, passes the leader wire of the coil 8 through the '∪' shaped grooves of the third and

fourth yokes

6 and 3, and then the inner tube 2 and the out cylinder. It is characterized in that it further comprises a method of detaching through the hole of (1).

In the fifth step, the rod integral type is inserted into the inner tube 2 to make the inner tube integral type, and then the nut is removed to remove the jig, and the inner tube integrated type is placed inside the out cylinder 1, and then the conventional rolling operation is performed. After solidifying the binding between the parts through, the end bolt 16 is screwed to one end of the rod 12, the jig is removed, after the caulking operation, the coil spring 14 is inserted into the rod 12, It characterized in that it further comprises a method for fastening the spring sheet 15 so that the coil spring 14 is not separated.

The present invention will be described in detail with reference to the accompanying drawings. 9 is an exploded view of the inner tube type M fluid damper of the present invention, Figure 10 is an assembly view of the inner tube type M fluid damper of the present invention.

Inner tube type AL fluid injection method first assembles the rod and each part, and then sets the rod direction to be perpendicular. Each part has a fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7), second yoke, O-ring (7) , The coil 8, the O-ring 7, and the first yoke 10 are sequentially installed in the axial direction. Thereafter, a syringe containing an MR fluid is inserted through an injection hole in which a thread is formed. And while injecting the MR fluid through the syringe, it is injected until the visual confirmation that the MR fluid leaks through the first yoke (10). After checking the leakage of MR fluid, cover the oil seal, bush, friction ring and case in order to make the rod integrated type. After that, the sealing of the MR fluid is fixed to the rod body with a jig and a nut to finish the AL fluid injection. The case is formed of a step diameter consisting of a large diameter and a small diameter like a reducer connecting a large diameter and a small diameter at a pipe joint, and one end of the jig is coupled to the rod by applying a horizontal force in close contact with the small diameter of the case. Each part is in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out. Finally, screw the bolts securely to prevent the leakage of MR fluid through the inlet. The rod integrated type is finally assembled to the inner tube and the out cylinder.

In particular, during the final assembly, the leader wire of the coil passes through the '∪' shaped grooves of the third and fourth yokes (6) (3), and then is separated through the holes of the inner tube and the out cylinder.

Therefore, the present invention can effectively inject the MR fluid into the damper, and also injects the MD fluid into the rod body of the damper first and then assembles it into the inner tube and the out cylinder, and the leader wire of the coil of the yoke and the inner tube and the out cylinder. By disengaging through the hole, it is possible to easily and easily assemble the MR fluid damper.

An inner tube 2 is installed in the out cylinder 1 of the MR fluid damper. The out cylinder has a hollow cylinder shape to accommodate the inner tube and the rod, and is filled with oil and fixed to the lower side of the tub by bolts. In addition, a rod 12 is installed in the inner tube 2, and a coil is turned on and off by electricity between the inner tube 2 and the axial radius direction of the rod. MR fluid is embedded between the coil and the rod in the axial radius direction. And the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (7) 2 yoke (9), o-ring (7), coil (8), o-ring (7), first yoke (10), oil seal (5), bush (4), friction ring (11), case (15) Sequentially installed in the direction, one end of the jig supports the case and the other end of the jig is fixed by a nut. The jig serves to keep the parts of the rod assembly in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out.

In the embodiment of the present invention, two coils are installed as described above, and the number may be one or several according to the design of the damping force. The oil seal seals between the inner tube 2 and the rod, and is provided with a pocket for supplying hydraulic oil to the circumferential surface of the rod. The friction ring serves to complement the damping force of the MR fluid. When no electricity is applied, the friction ring drives the damping force, and when energizing, the friction ring and the MR fluid combine to adjust the damping force. If necessary, the friction ring is removed, and the damping force can be realized using only the ML fluid. Like the reducer connecting the large diameter and the small diameter at the pipe joint, the case is composed of a large diameter and a small diameter, and is formed stepwise, and one end of the jig is coupled to the rod by applying a horizontal force in close contact with the small diameter of the case. Each part is in close contact with each other in the axial horizontal direction so that the MR fluid does not leak out.

On the other hand, holes are formed in the inner tube 2 and the out cylinder 1, respectively, so that the lead wires 18 of the coils 8 have a '∪' shape of the third and

fourth yokes

6 and 3. After passing through the groove, it is drawn out through the holes of the inner tube (2) and the out cylinder (1). In other words, the lead wire 18 of the coil 8 is drawn out through the hole of the inner tube when the rod integrated type is inserted into the inner tube to make the inner tube integral, and after the jig is removed, the inner tube integrated type is put out of the out cylinder. It is even drawn out through the hole of the cylinder.

In addition, the small diameter side of the case of the present invention is exposed to the outside of the inner tube and the coil spring 14, the spring sheet ( 15) and end bolts 16 are sequentially installed.

Then, the rod integrated type is inserted into the inner tube, and the nut is removed to remove the jig. The inner tube grabs the parts instead of the jig, so you no longer need the jig.

After removing the jig, the inner tube type with the rod integrated type is inserted into the out cylinder. Next, tolerate the solidity between parts by rolling a lazy.

After coupling the female thread formed at one end of the end bolt with the male threaded portion of the rod end from which the jig is removed, the caulking operation is performed to squeeze the coupling part to secure the bond, and then the spring is inserted into the rod outer circumference. The spring seat is to be fastened so that it does not deviate. In addition, the coil spring serves as an auxiliary damping together with the MR fluid, and if necessary, the coil spring can be removed and the damping force can be realized using only the MR fluid.

Claims

In the M fluid damper for changing the strength of the magnetic field to adjust the damping force, the rod 12 is installed in the out cylinder (1) of the M fluid damper, the shaft radius of the out cylinder (1) and the rod 12 Between the direction is provided with a coil 8 that is turned on and off by electricity, the magnetic fluid is magnetically by the coil 8 is embedded between the coil 8 and the rod 12 in the axial radius direction. Jig-type MR fluid damper characterized by the above-mentioned.
The method of claim 1, wherein the fourth yoke (3), the bush (4), the oil seal (5), the third yoke (6), the o-ring (7), the coil (8), the o-ring (4) 7), second yoke (9), o-ring (7), coil (8), o-ring (7), first yoke (10), oil seal (5), bush (4), friction ring (11), case (13) are sequentially installed in the axial direction, jig type M fluid damper, characterized in that one end of the jig (2) supports the case and the other end of the jig is fixed by a nut.
The jig-type M fluid damper according to claim 2, wherein the jig (2) is removed after a conventional rolling operation of pressing parts to eliminate gaps between parts and binding them together.
4. The jig-type M fluid damper according to claim 3, wherein a coil spring (14), a spring seat (15) and an end bolt (16) are sequentially installed on the rod from which the jig is removed.
The method of claim 1, wherein the out cylinder (1) is formed with a hole, the lead wire 18 of the coil 8 passes through the '∪' shaped groove of the third, fourth yoke (6) (3) After that, the jig-type MR fluid damper, characterized in that it is drawn out through the hole of the out cylinder (1).
In an M fluid damper that modulates a damping force by varying the strength of a magnetic field, an inner cylinder 2 is installed in an out cylinder 1 of the M fluid damper, and a rod 12 is provided in the inner cylinder 2. Installed, but between the inner cylinder (2) and the radial direction of the rod 12, the coil 8 is turned on and off by electricity, the magnetic fluid is magnetic by the coil (8) is the coil An inner tube type M fluid damper, characterized in that it is embedded between the (8) and the axial radius direction of the rod (12).
The method of claim 6, wherein the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring (5) 7), second yoke (9), o-ring (7), coil (8), o-ring (7), first yoke (10), oil seal (5), bush (4), friction ring (11), case ( Tube-type MR fluid damper, characterized in that 13) are installed sequentially in the axial direction.
The coil spring 14, the spring seat 15, and the end bolt 16 are sequentially installed at portions of the rod 12 exposed to the outside in the axial direction of the inner cylinder 2. Tube-type MR fluid damper.
7. The cylinder according to claim 6, wherein a hole is formed in the out cylinder (1) so that the lead wire (18) of the coil (8) passes through the grooves of the third and fourth yokes (6) (3). After that, the inner tube type M fluid damper characterized in that it is drawn out through the hole of the out cylinder (1).
A method of assembling a jig-type MR fluid damper, comprising: a step (1) of assembling a rod (12) of each of the MR fluid dampers and respective rod parts; Injecting an MR fluid through an injection hole; After injecting the ML fluid to assemble the remaining rod parts to form a rod integral type and fixed by the jig (2) and the nut (19) to finish the AL fluid injection work; Four steps to securely lock the injection hole with the screw bolt 17 to prevent the leakage of the MR fluid; And assembling the rod integrated type into the out cylinder (1).
11. The rod yoke of the first stage comprises: a fourth yoke (3), a bush (4), an oil seal (5), a third yoke (6), an o-ring (7), a coil (8), an o-ring (10). 7), The second yoke, O-ring (7), coil (8), O-ring (7), the first yoke (10) is a method of assembling jig-type MR fluid damper, characterized in that sequentially installed in the axial direction.
12. The jig-type ML fluid of claim 10, wherein the remaining three-in-one rod-integrated parts are sequentially installed in an axial direction with the oil seal 5, the bush 4, the friction ring 11, and the case 13. How to assemble the damper.
11. The method of claim 10, wherein the fifth step, which is a final assembly step, passes the leader wire 18 of the coil 8 through the '∪' shaped grooves of the third and fourth yokes 6, 3, and then out. Assembly method of a jig-type MR fluid damper further comprises a method of detaching through the hole of the cylinder (1).
The method according to claim 10, wherein the rod integral type of the fifth step is placed inside the out cylinder (1), and then solidifying the binding between the parts through the usual rolling operation, and then the nut (19) is removed to remove the jig (2), After screwing the end bolt 16 to one end of the rod 12 from which the jig 2 is removed, after caulking, the coil spring 14 is inserted into the rod 12, and the coil spring 14 is Assembly method of jig-type MR fluid damper, characterized in that it further comprises a method of fastening the spring sheet 15 so as not to be separated.
A method of assembling an inner tube type MR fluid damper, comprising: a step (1) of assembling the rod 12 and each rod part of the MR fluid damper; Injecting an MR fluid through an injection hole; Injecting the ML fluid and assembling the remaining rod parts to form a rod-integrated type and fixing them with a jig and a nut to finish the ML fluid injection; 4 steps to securely lock the inlet with a screw bolt to prevent the leakage of the MR fluid; After making the inner tube integrated type in which the rod integrated type is inserted into the inner tube (2), remove the jig by unscrewing the nut, insert the inner tube integrated type into the out cylinder (1), and then bond between the parts through the usual rolling operation. Method of assembling the tube-type MR fluid damper comprising a; 5 steps to solidify.
The method of claim 15, wherein each of the rod parts of the first step is the fourth yoke (3), bush (4), oil seal (5), third yoke (6), O-ring (7), coil (8), O-ring ( 7), The second yoke, O-ring (7), coil (8), O-ring (7), the first yoke (10) is an assembly method of the inner tube type M fluid damper, characterized in that is installed sequentially in the axial direction.
16. The inner tube type according to claim 15, wherein the remaining three-piece rod-integrated parts are sequentially installed in the axial direction of the oil chamber (5), the bush (4), the friction ring (11), and the case (13). Assembly method of MR fluid damper.
The method according to claim 15, wherein the fifth step, which is the final assembly step, passes the leader wire of the coil 8 through the '∪' shaped grooves of the third and fourth yokes 6 and 3, and then the inner tube 2 ) And a method of assembling the inner tube type MR fluid damper further comprising a method of disengaging through the hole of the out cylinder (1).
The method of claim 15, wherein the fifth step includes inserting the rod integrated type into the inner tube 2 to form the inner tube integrated type, and then unscrewing the nut to remove the jig and inserting the inner tube integrated type into the out cylinder 1 After solidifying the binding between the parts through the conventional rolling work, after screwing the end bolt 16 to one end of the rod 12, the jig is removed, and after caulking, the coil spring (14) on the rod 12 ) Inserting, and the method of assembling the inner tube type MR fluid damper, characterized in that it further comprises a method for fastening the spring sheet (15) so that the coil spring (14) is not separated.