Oil-free magnetic confinement coaxial linear swing motor

Abstract

The utility model discloses an oil-free magnetic confinement coaxial linear swing motor, which comprises a reciprocating motor return iron, a reciprocating motor permanent magnet, a central return iron, a reciprocating motor coil, a magnetic confinement return iron, a pair of outer confinement outer magnetic rings, a pair of inner confinement magnetic rings and a motion output piston. Zero friction or low friction of a friction pair in reciprocating motion is realized by utilizing the reciprocating motion magnetic confinement assembly; according to the invention, the magnetic field coupling of the linear reciprocating motion magnetic confinement system and the reciprocating motor system is realized, the coaxial arrangement of the reciprocating motor and the magnetic confinement system is realized, and the complexity of the magnetic confinement linear motor system is effectively reduced. A magnetic circuit on the open side of the linear reciprocating motion magnetic confinement system is coupled with a magnetic field of the reciprocating motor system, so that the coaxial linear swing motor is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil -free reciprocating linear motor technical field, especially in an oil -free magnetic restraint coaxial linear swing motor. BACKGROUND

[0002] The conventional linear motor realizes big displacement linear reciprocating motion through oil lubrication and spring combination, and the defects of the system are: first, oil lubrication is needed, therefore, a special friction pair oil injection and system lubricating oil circulating device need to be designed in the system, and lubricating oil can cause pollution to the driven working medium (if compressed gas, liquid, etc.); second, half of the magnetic circuit of linear reciprocating motion magnetic restraint is open, and the utilization rate is low. CONTENT OF THE UTILITY MODEL

[0003] The utility model needs to solve the technical problem in view of the problems of oil lubrication and low utilization rate of the conventional linear motor through oil lubrication and spring combination and provides an oil -free magnetic restraint coaxial linear swing motor of magnetic restraint control without oil lubrication and high utilization rate.

[0004] The technical problem needed by the utility model can be realized by the following technical scheme:

[0005] An oil -free magnetic restraint coaxial linear swing motor, comprising:

[0006] A reciprocating motor back iron, the reciprocating motor back iron has a motor inner cavity;

[0007] The reciprocating motor permanent magnet coaxially installed in the motor inner cavity;

[0008] A center back iron, the first end of the center back iron is coaxially arranged in the reciprocating motor permanent magnet and forms a closed magnetic circuit with the reciprocating motor permanent magnet, and the second end of the center back iron extends out of the reciprocating motor permanent magnet;

[0009] A reciprocating motor coil, the reciprocating motor coil is installed on the first end of the center back iron and is directly connected with the center back iron to realize linear coaxial with the magnetic restraint system;

[0010] A magnetic restraint back iron closely attached to the axial direction of the reciprocating motor back iron to realize a magnetic loop, and a piston hole is coaxially arranged in the magnetic restraint back iron;

[0011] A pair of outer restraint magnetic rings forming an outer magnetic field, a pair of outer restraint outer magnetic rings are coaxially installed in the magnetic inner cavity and can realize uniform unidirectional magnetic field in the magnetic inner cavity;The second end of the center back iron extends into a pair of outer restraint outer magnetic rings and is coaxial with a pair of outer restraint outer magnetic rings;

[0012] A pair of inner constraint magnetic rings are coaxially installed on the second end of the center return iron, and one inner constraint magnetic ring and one outer constraint magnetic ring form a motion pair; a pair of outer constraint magnetic rings drive the center return iron to reciprocate by using the magnetic field through the pair of inner constraint magnetic rings;

[0013] A motion output piston is slidingly arranged in the piston hole, one end of the motion output piston is fixedly connected with the end of the second end of the center return iron, and the other end of the motion output piston is provided with an output head.

[0014] In one preferred embodiment of the utility model, the magnetic properties of the pair of outer constraint magnetic rings are opposite; the inner constraint magnetic ring and the outer constraint magnetic ring forming a motion pair have opposite magnetic properties.

[0015] In one preferred embodiment of the utility model, the inner constraint magnetic ring and the outer constraint magnetic ring forming a motion pair do not contact or have little contact during the motion process.

[0016] In one preferred embodiment of the utility model, the motion output piston and the piston hole do not contact or have little contact during the motion process.

[0017] In one preferred embodiment of the utility model, a separation block is arranged between the reciprocating motor permanent magnet and the outer constraint magnetic ring adjacent to the reciprocating motor permanent magnet, so as to leave a motion space for the reciprocating motor coil.

[0018] In one preferred embodiment of the utility model, a motor air gap is arranged at the end of the reciprocating motor coil adjacent to the second end of the center return iron, and the motor air gap realizes the magnetic field perpendicular to the motion direction of the reciprocating motor coil.

[0019] In one preferred embodiment of the utility model, the reciprocating motor coil is pasted on the first end of the center return iron, so as to realize the direct conduction of electromagnetic force to the output head.

[0020] In one preferred embodiment of the utility model, the center return iron is a hollow structure.

[0021] Due to the above technical scheme, the utility model does not need oil lubrication; the reciprocating motion magnetic constraint assembly is used to realize the friction pair without friction or with low friction in reciprocating motion; the open side magnetic circuit of the linear reciprocating motion magnetic constraint system is coupled with the magnetic field of the reciprocating motor system, so as to realize the coaxial linear swing motor.

[0022] The utility model realizes the coupling of the linear reciprocating motion magnetic constraint system and the magnetic field of the reciprocating motor system, realizes the coaxial arrangement of the reciprocating motor and the magnetic constraint system, and effectively reduces the complexity of the magnetic constraint linear motor system. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Figure 1 is a structural schematic diagram of the oil-free magnetic constraint coaxial linear swing motor of the present application. DETAILED DESCRIPTION

[0024] The present application will be further described in conjunction with the drawings and specific embodiments.

[0025] Referring to Figure 1 , the oil-free magnetic constraint coaxial linear swing motor shown in the figure comprises a reciprocating motor return iron 10, a reciprocating motor permanent magnet 20, a center return iron 30, a reciprocating motor coil 40, a magnetic constraint return iron 50, a pair of outer constraint outer magnetic rings 61, 62, a pair of inner constraint magnetic rings 71, 72, and a motion output piston 80.

[0026] The reciprocating motor return iron 10 has a motor inner cavity 11, and the reciprocating motor permanent magnet 20 is installed in the motor inner cavity 11 in a coaxial manner with the motor inner cavity 11.

[0027] The first end 31 of the center return iron 30 is coaxially arranged in the reciprocating motor permanent magnet 20 to form a closed magnetic circuit with the reciprocating motor permanent magnet 20, and the second end 32 of the center return iron 30 extends out of the reciprocating motor permanent magnet 20. The center return iron 30 is of a hollow structure to reduce the weight of the center return iron 30.

[0028] The reciprocating motor coil 40 is pasted on the first end 31 of the center return iron 30 and directly connected to the center return iron 30 to realize linear coaxial with the magnetic constraint system and realize direct conduction of electromagnetic force to the output head 81 of the motion output piston 80. The reciprocating motor coil 40 is provided with a motor air gap A at the end near the second end 32 of the center return iron 30, and the motor air gap A realizes the magnetic field perpendicular to the motion direction of the reciprocating motor coil 40.

[0029] The axial direction of the magnetic confinement return iron 50 is closely fitted with the axial direction of the reciprocating motor return iron 20 to realize the magnetic circuit. The magnetic inner cavity 51 and the piston hole 52 are coaxially arranged in the magnetic confinement return iron 50; a pair of outer confinement outer magnetic rings 61, 62 are coaxially installed in the magnetic inner cavity 51 and can realize uniform unidirectional magnetic field in the magnetic inner cavity 51. The magnetism of the outer confinement outer magnetic rings 61, 62 is opposite, for example: the magnetism of the outer confinement outer magnetic ring 61 is N, and the magnetism of the outer confinement outer magnetic ring 61 is S. A separation block 90 is arranged between the reciprocating motor permanent magnet 20 and the outer confinement magnetic ring 62 adjacent to the reciprocating motor permanent magnet 20, so as to leave a movement space for the reciprocating motor coil 40. A magnetic isolation ring 91, 92 is arranged at both ends of the separation block 90. Two magnetic isolation rings 93 and 94 are arranged between the pair of outer confinement outer magnetic rings 61, 62, and a magnetic isolation ring 95 is also arranged between the outer confinement outer magnetic ring 61 and the step surface 51 of the magnetic confinement return iron 50, which is located at the connection between the magnetic inner cavity 51 and the piston hole 52. A magnetic isolation ring 96 is also arranged at the end of the reciprocating motor permanent magnet 20 away from the separation block 90.

[0030] The second end 32 of the center return iron 30 extends into and is coaxial with the pair of outer confinement outer magnetic rings 61, 62; a pair of inner confinement magnetic rings 71, 72 are coaxially installed on the second end 32 of the center return iron 30, and the magnetism of the pair of inner confinement magnetic rings 71, 72 is opposite, for example: the magnetism of the inner confinement magnetic ring 71 is S, and the magnetism of the inner confinement magnetic ring 71 is N, the inner confinement magnetic ring 71 and the outer confinement outer magnetic ring 61 form a movement pair, and the inner confinement magnetic ring 72 and the outer confinement outer magnetic ring 62 form a movement pair, so that the pair of outer confinement magnetic rings 61, 62 drive the center return iron 30 to reciprocate by using the magnetic field through the pair of inner confinement magnetic rings 71, 72; the inner confinement magnetic ring 71 and the outer confinement outer magnetic ring 61 do not contact or less contact during the movement process; the inner confinement magnetic ring 72 and the outer confinement outer magnetic ring 62 do not contact or less contact during the movement process

[0031] The movement output piston 80 is slidably arranged in the piston hole 52; the movement output piston 80 is arranged between the piston hole 52; one end of the movement output piston 80 is fixedly connected with the end of the second end 32 of the center return iron 30, and the other end of the movement output piston 80 is provided with an output head 81.

Claims

1. An oil-free magnetic-constraint coaxial linear oscillating motor, characterized in that, The application relates to a reciprocating motor, which comprises the following parts: a reciprocating motor back iron, which has a motor cavity; a reciprocating motor permanent magnet coaxially arranged in the motor cavity; a center back iron, the first end of which is coaxially arranged in the reciprocating motor permanent magnet to form a closed magnetic circuit with the reciprocating motor permanent magnet, and the second end of which extends out of the reciprocating motor permanent magnet; a reciprocating motor coil, which is arranged on the first end of the center back iron and directly connected with the center back iron to realize linear coaxial connection with a magnetic confinement system; a magnetic confinement back iron which is closely attached to the reciprocating motor back iron in the axial direction to realize a magnetic circuit, and which is provided with a magnetic cavity and a piston hole coaxially arranged in the magnetic confinement back iron; a pair of outer confinement magnetic rings which form an outer magnetic field, and which are coaxially arranged in the magnetic cavity and can realize a uniform one-way magnetic field in the magnetic cavity; the second end of the center back iron extends into the pair of outer confinement magnetic rings and is coaxial with the pair of outer confinement magnetic rings; a pair of inner confinement magnetic rings, which are coaxially arranged on the second end of the center back iron, and which form a pair of moving pairs with the outer confinement magnetic rings; the pair of outer confinement magnetic rings drive the center back iron to reciprocate by using the magnetic field through the pair of inner confinement magnetic rings; a motion output piston, which is slidingly arranged in the piston hole, one end of the motion output piston is fixedly connected with the end of the second end of the center back iron, and the other end of the motion output piston is provided with an output head.

2. An oil-free magnetic-confinement co-axial linear oscillating motor according to claim 1, characterized in that, The pair of outer confinement magnetic rings are magnetically opposite; the inner confinement magnetic rings and the outer confinement magnetic rings which form a moving pair are magnetically opposite.

3. An oil-free magnetic-confinement co-axial linear oscillatory motor according to claim 1, characterized in that, The inner confinement magnetic rings and the outer confinement magnetic rings which form a moving pair do not contact or slightly contact each other during the motion.

4. An oil-free magnetic-confinement co-axial linear oscillatory motor according to claim 1, characterized in that, The motion output piston and the piston hole do not contact or slightly contact each other during the motion.

5. An oil-free magnetic-confinement co-axial linear oscillatory motor according to claim 1, wherein An isolation block is arranged between the reciprocating motor permanent magnet and one outer confinement magnetic ring adjacent to the reciprocating motor permanent magnet to leave a motion space for the reciprocating motor coil.

6. An oil-free magnetic-confinement co-axial linear oscillating motor according to claim 1, characterized in that, A motor air gap is arranged at the end of the reciprocating motor coil adjacent to the second end of the center back iron, and the motor air gap realizes a magnetic field perpendicular to the motion direction of the reciprocating motor coil.

7. An oil-free magnetic-confinement co-axial linear oscillating motor according to claim 1, characterized in that, The reciprocating motor coil is pasted on the first end of the center back iron to realize direct transmission of electromagnetic force to the output head.

8. An oil-free magnetic-confinement co-axial linear oscillatory motor according to claim 1, characterized in that, The center back iron is a hollow structure.

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