Reciprocating magnetic positioning motor

Abstract

The reciprocating magnetic positioning motor provided by the present invention comprises a magnetic top cover, a magnetic bottom shell, a stator coil, a permanent magnetic moving core and a colloid bushing, the edge of the magnetic top cover is buckled with the magnetic bottom shell to form an installation cavity, a stator coil is arranged in the installation cavity, the top of the magnetic top cover and the bottom of the magnetic bottom shell are respectively provided with a first and a second through hole at the central axis of the corresponding stator coil, the two ends of the colloid bushing are respectively inserted into the first and the second through holes at the top of the magnetic top cover and the bottom of the magnetic bottom shell, the permanent magnetic moving core is slidably arranged in the colloid bushing and connected with a push rod that slides out of the top of the colloid bushing, the bottom of the magnetic bottom shell is provided with a reset magnetic ring sleeve for sliding and resetting the permanent magnetic moving core at the edge of the second through hole toward the outer wall of the colloid bushing in the installation cavity, and an annular gap is formed between the top surface of the reset magnetic ring sleeve and the bottom surface of the magnetic top cover. The present invention provides a reciprocating magnetic positioning motor with a simple and compact structure, high reliability and simple and convenient control.

Description

Technical Field

[0001] The invention relates to the technical field of motors, in particular to a reciprocating magnetic positioning motor. Background Art

[0002] The massage action part of the existing massage equipment such as face massagers, foot massagers, massage chairs and massage guns is mainly driven by the reciprocating motion converted by the rotating motor driving the crank-connecting rod mechanism, or is directly driven by the reciprocating mover of the reciprocating motor. The linear reciprocating motor usually has multiple sets of stator windings and diodes to generate alternating magnetic fields to drive the reciprocating mover to frequently commutate to achieve linear reciprocating motion, or a single set of windings is used in conjunction with a reset spring, a reset magnet, etc. to drive the reciprocating mover to frequently commutate to achieve linear reciprocating motion.

[0003] However, when it is needed to be applied to multi-point massage equipment that contacts the human body over a large area and focuses on touch, the mechanical connection structure driven by the rotary motor causes many intermediate energy conversion and transmission links, large losses, and low efficiency. For cost considerations, rotary motors are mostly brushed motors, and continuous use will cause serious wear of the motors, reducing their service life, and at the same time, they are large in size. The linear reciprocating motor circuit with multiple sets of stator windings and diodes needs to be configured with additional drive control circuits, and the production circuit cost is high. The linear reciprocating motor with a single set of windings and a reset spring and reset magnet is also large in size due to structural problems. The motors realized by the above-mentioned structures cannot be densely laid on a large area on multi-point massage equipment due to the limitations of motor volume, circuit design, and efficiency conversion. Therefore, there is still room for improvement in the existing reciprocating motion output motors. Summary of the invention

[0004] In view of the above-mentioned deficiencies of the prior art, the present invention provides a reciprocating magnetic positioning motor which has a simple and compact structure, high reliability and simple and convenient control.

[0005] The present invention achieves the above object by:

[0006] A reciprocating magnetic positioning motor comprises a magnetic top cover, a magnetic bottom shell, a stator coil, a permanent magnet moving core, a reset magnetic conductive ring sleeve and a colloid bushing. The edge of the magnetic top cover is buckled with the magnetic bottom shell to form an installation cavity. The stator coil is arranged in the installation cavity. The top of the magnetic top cover and the bottom of the magnetic bottom shell are respectively provided with a first and a second through hole at the central axis of the corresponding stator coil. The two ends of the colloid bushing are respectively inserted into the first and the second through holes at the top of the magnetic top cover and the bottom of the magnetic bottom shell. The permanent magnet moving core is slidably arranged in the colloid bushing and is connected to a push rod that slides out of the top of the colloid bushing. The bottom of the magnetic bottom shell is provided with a reset magnetic conductive ring sleeve for sliding and resetting the permanent magnet moving core at the edge of the second through hole toward the outer wall of the colloid bushing in the installation cavity. An annular gap is formed between the top surface of the reset magnetic conductive ring sleeve and the bottom surface of the magnetic top cover.

[0007] The permanent magnetic moving core is an axially magnetized magnetic ring with an N pole at the top and an S pole at the bottom or an S pole at the top and an N pole at the bottom in the magnetization direction, and the bottom of the push rod is tightly inserted in the magnetic ring.

[0008] The permanent magnetic moving core is a radially magnetized magnetic ring with an N pole on the outside and an S pole on the inside or an S pole on the outside and an N pole on the inside in the magnetization direction, and the bottom of the push rod is tightly inserted in the magnetic ring.

[0009] Among them, a guide limiting ring with an inner diameter smaller than the outer diameter of the permanent magnetic core is provided at the top of the colloid bushing toward the inner ring. The permanent magnetic core is slidably arranged in the colloid bushing through the sliding cooperation of the push rod with the guide limiting ring and pushes the push rod to slide out of the guide limiting ring.

[0010] A dustproof ring is extended from the top of the colloid bushing to the periphery of the colloid bushing, and the bottom of the dustproof ring covers and fits the top surface of the magnetic conductive top cover.

[0011] Wherein, the magnetic conductive top cover is provided with a wire hole for laying the stator coil wire at a position corresponding to the stator coil, and the dustproof ring is provided with an avoidance opening at a position corresponding to the wire hole.

[0012] Among them, a wear-resistant wire sleeve is also provided, the bottom of which is inserted and connected to the wire hole, and the top of the wear-resistant wire sleeve is protruding with a shelf step around, and the bottom surface of the shelf step abuts against the top surface of the magnetic top cover.

[0013] Wherein, the dustproof ring is provided with limiting bosses on both sides of the top of the avoidance opening respectively protruding into the avoidance opening for clamping and abutting the wear-resistant wire sleeve, and the limiting bosses are located above the step on which the wear-resistant wire sleeve is placed.

[0014] Beneficial effects of the present invention: the reciprocating magnetic positioning motor provided by the present invention makes the axis of the colloid bushing coaxial with the center axis of the stator coil by inserting the colloid bushing into the magnetic top cover and the magnetic bottom shell corresponding to the first and second through holes of the center axis of the stator coil, so that the friction resistance of the permanent magnetic moving core when sliding back and forth in the colloid bushing is reduced, and the wear is reduced. Because the colloid bushing is a non-magnetic material, the bottom of the magnetic bottom shell is provided with a reset magnetic ring sleeve at the edge of the second through hole facing the outer wall of the colloid bushing in the installation cavity. When the power is not supplied, the permanent magnetic moving core falls back and is positioned to the bottom of the colloid bushing through its own magnetic force to magnetically attract the reset magnetic ring sleeve, and at the same time drives the push rod to reset and fall. When the power is supplied, due to the formation between the top surface of the reset magnetic ring sleeve and the bottom surface of the magnetic top cover The magnetic force generated by the stator coil is transmitted from the annular gap to the permanent magnetic moving core in the colloid sleeve, so that the permanent magnetic moving core overcomes the magnetic attraction between itself and the reset magnetic conductive ring sleeve under the combined action of its own magnetic force and the magnetic force of the stator coil and slides in the direction of the magnetic conductive top cover, while pushing the push rod to slide outside the colloid sleeve. The design of the reset magnetic conductive ring sleeve and the permanent magnetic moving core replaces the reset winding, reset spring and reset magnet driven by the reciprocating motor in the prior art, simplifies the component structure of the motor, makes the motor structure simple and compact, and can control the reciprocating motion of the permanent magnetic moving core of the motor by simply turning the power on and off, with enhanced reliability and simple and convenient control. No additional control circuit design is required, and it can be densely laid on massage equipment for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the decomposition structure of the present invention.

[0019] In the above figure, 100. magnetic top cover, 110. wire hole, 120. first through hole, 200. magnetic bottom shell, 210. reset magnetic ring sleeve, 220. second through hole, 300. stator coil, 400. permanent magnetic moving core, 500. push rod, 600. colloid bushing, 610. guide limiting ring, 620. dustproof ring, 621. avoidance, 622. limiting boss, 700. wear-resistant wire sleeve, 710. shelf step. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 3As shown, the reciprocating magnetic positioning motor includes a magnetic top cover 100, a magnetic bottom shell 200, a stator coil 300, a permanent magnetic moving core 400 and a colloid bushing 600. The edge of the magnetic top cover 100 is buckled with the magnetic bottom shell 200 to form an installation cavity, and the stator coil 300 is arranged in the installation cavity. The top of the magnetic top cover 100 and the bottom of the magnetic bottom shell 200 are respectively provided with a first through hole 120 and a second through hole 220 at the central axis of the stator coil 300. The two ends of the colloid bushing 600 are respectively inserted into the magnetic top cover 100. In the first and second through holes 120 and 220 at the top and bottom of the magnetic bottom shell 200, the permanent magnetic moving core 400 is slidably disposed in the colloid bushing 600 and is connected to a push rod 500 that slides out of the top of the colloid bushing 600. The bottom of the magnetic bottom shell 200 is provided with a reset magnetic ring sleeve 210 at the edge of the second through hole 220 toward the outer wall of the colloid bushing 600 in the installation cavity for slidingly resetting the permanent magnetic moving core 400, and an annular gap is formed between the top surface of the reset magnetic ring sleeve 210 and the bottom surface of the magnetic top cover 100. The reciprocating magnetic positioning motor provided by the present invention is configured such that the axis of the colloid bushing 600 is coaxial with the center axis of the stator coil 300 by inserting the colloid bushing 600 into the magnetic top cover 100 and the magnetic bottom shell 200 corresponding to the first and second through holes 120 and 220 of the center axis of the stator coil 300, so that the friction resistance of the permanent magnetic moving core 400 is reduced when it slides back and forth in the colloid bushing 600, thereby reducing wear. Since the colloid bushing 600 is made of non-magnetic material, the bottom of the magnetic bottom shell 200 is at the second through hole. The edge of 220 is facing the outer wall of the colloid bushing 600 in the installation cavity, and a reset magnetic ring sleeve 210 is provided. When the power is not turned on, the permanent magnetic moving core 400 uses its own magnetic force to attract the reset magnetic ring sleeve 210 to fall back and position to the bottom of the colloid bushing 600, and at the same time drives the push rod 500 to fall back. When the power is turned on, an annular gap is formed between the top surface of the reset magnetic ring sleeve 210 and the bottom surface of the magnetic top cover 100, and the magnetic force generated by the stator coil 300 is transmitted from the annular gap to the colloid bushing. 600, the permanent magnetic moving core 400 overcomes the magnetic attraction between itself and the reset magnetic conductive ring sleeve 210 and slides toward the magnetic guide top cover 100 under the combined action of its own magnetic force and the magnetic force of the stator coil 300, and at the same time pushes the push rod 500 to slide outside the colloid sleeve 600. During production, the size of the annular gap can be controlled by changing the height of the reset magnetic conductive ring sleeve 210, thereby changing the magnetic positioning height of the permanent magnetic moving core 400 after sliding toward the magnetic guide top cover 100. The design of the reset magnetic conductive ring sleeve 210 and the permanent magnetic moving core 400 replaces the reset winding, reset spring and reset magnet of the reciprocating motor driving the permanent magnetic moving core 400 to reset and slide in the prior art, simplifies the component structure of the motor, makes the motor structure simple and compact, and can control the reciprocating motion of the permanent magnetic moving core 400 of the motor by simply turning the power on and off, with enhanced reliability and simple and convenient control. No additional control circuit design is required, and it can be densely laid and used on massage equipment.

[0022] In order to ensure the magnetic strength of the permanent magnetic moving core 400 and to facilitate the control of the sliding stroke of the permanent magnetic moving core 400, the permanent magnetic moving core 400 is an axially magnetized magnetic ring with an N pole at the top and an S pole at the bottom or an S pole at the top and an N pole at the bottom in the magnetizing direction, and the bottom of the push rod 500 is tightly inserted in the magnetic ring.

[0023] In order to ensure the magnetic strength of the permanent magnetic moving core 400 and to enhance the strength of the reciprocating motion of the permanent magnetic moving core 400, the permanent magnetic moving core 400 can also be a radially magnetized magnetic ring with an N pole on the outside and an S pole on the inside or an S pole on the outside and an N pole on the inside in the magnetizing direction, and the bottom of the push rod 500 is tightly inserted in the magnetic ring.

[0024] In order to avoid overshoot when the permanent magnet moving core 400 slides upward and drives the push rod 500 to push outward when the motor is powered on, a guide limiting ring 610 with an inner diameter smaller than the outer diameter of the permanent magnet moving core 400 is provided on the top of the colloid bushing 600. The permanent magnet moving core 400 is slidably arranged in the colloid bushing 600 through the push rod 500 to slide in cooperation with the guide limiting ring 610 and push the push rod 500 to slide out of the guide limiting ring 610.

[0025] In order to increase the dustproof performance of the motor, a dustproof ring 620 extends from the top of the colloid bushing 600 to the surrounding of the colloid bushing 600, and the bottom of the dustproof ring 620 covers and fits the top surface of the magnetic top cover 100, effectively preventing external dust from falling into the motor through the gap between the colloid bushing 600 and the through hole of the magnetic top cover 100 to affect the performance of the motor and improve the service life of the motor.

[0026] In order to facilitate the arrangement of lines when the motor is densely laid out, a wire hole 110 for laying the wires of the stator coil 300 is opened at the position of the magnetic top cover 100 corresponding to the stator coil 300, and a avoidance opening 621 is opened at the position of the dust ring 620 corresponding to the wire hole 110. During assembly, the stator coil 300 is placed in the magnetic bottom shell 200. When the magnetic top cover 100 is buckled on, the wires led out of the stator coil 300 are aligned with the wire hole 110 of the magnetic top cover 100 and laid out and led out from the wire hole 110 of the magnetic top cover 100. Compared with the wire hole 110 led out from the side of the magnetic bottom shell 200, the assembly is faster and more convenient.

[0027] When the motor is running, it will generate vibration. The vibration of the motor will cause friction between the wire hole 110 and the wire, which will cause damage to the wire and motor failure. In order to avoid the above situation, the motor is also provided with a wear-resistant wire sleeve 700. The bottom of the wear-resistant wire sleeve 700 is inserted into the wire hole 110, and the top of the wear-resistant wire sleeve 700 is protruding with a resting step 710 on all sides. The bottom surface of the resting step 710 abuts against the top surface of the magnetic top cover 100. The resting step 710 prevents the wear-resistant wire sleeve 700 from sliding into the motor with the vibration of the motor, and also prevents external dust from falling into the motor from the wire hole 110 and affecting the performance of the motor.

[0028] At the same time, in order to prevent the vibration generated by the motor from causing the wear-resistant wire sleeve 700 to fall out of the motor, the dustproof ring 620 is provided with limiting bosses 622 protruding into the avoidance opening 621 on both sides of the top of the avoidance opening 621 for clamping and abutting the wear-resistant wire sleeve 700. The limiting bosses 622 are located above the step 710 on which the wear-resistant wire sleeve 700 is placed.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reciprocating magnetic positioning motor, comprising a magnetic top cover (100), a magnetic bottom shell (200), a stator coil (300), a permanent magnetic moving core (400) and a colloid bushing (600), characterized in that: The edge of the magnetic top cover (100) is buckled with the magnetic bottom shell (200) to form an installation cavity, in which a stator coil (300) is arranged, and the top of the magnetic top cover (100) and the bottom of the magnetic bottom shell (200) are respectively provided with a first and a second through hole (120, 220) at the center axis of the stator coil (300), and the two ends of the colloid bushing (600) are respectively inserted into the first and the second through holes (120, 220) at the top of the magnetic top cover (100) and the bottom of the magnetic bottom shell (200). 0), the permanent magnetic moving core (400) is slidably arranged in the colloid bushing (600) and is connected to a push rod (500) that slides out of the top of the colloid bushing (600), and the bottom of the magnetic bottom shell (200) is provided with a reset magnetic conductive ring sleeve (210) for slidingly resetting the permanent magnetic moving core (400) at the edge of the second through hole (220) and the outer wall surrounding the colloid bushing (600) in the installation cavity, and an annular gap is formed between the top surface of the reset magnetic conductive ring sleeve (210) and the bottom surface of the magnetic conductive top cover (100).

2. The reciprocating magnetic positioning motor according to claim 1, characterized in that: The permanent magnetic moving core (400) is an axially magnetized magnetic ring with an N pole at the top and an S pole at the bottom or an S pole at the top and an N pole at the bottom in the magnetization direction, and the bottom of the push rod (500) is tightly inserted in the magnetic ring.

3. The reciprocating magnetic positioning motor according to claim 1, characterized in that: The permanent magnetic moving core (400) is a radially magnetized magnetic ring with an N pole on the outside and an S pole on the inside or an S pole on the outside and an N pole on the inside in the magnetization direction. The bottom of the push rod (500) is tightly inserted in the magnetic ring.

4. The reciprocating magnetic positioning motor according to claim 2 or 3, characterized in that: The top end of the colloid bushing (600) is provided with a guide limiting ring (610) with an inner diameter smaller than the outer diameter of the permanent magnetic moving core (400) toward the inner ring; the permanent magnetic moving core (400) is slidably arranged in the colloid bushing (600) through the sliding fit of the guide limiting ring (610) by the push rod (500) and pushes the push rod (500) to slide out of the guide limiting ring (610).

5. The reciprocating magnetic positioning motor according to claim 1, characterized in that: A dustproof ring (620) is extended from the top of the colloid bushing (600) to the periphery of the colloid bushing (600), and the bottom of the dustproof ring (620) covers and fits the top surface of the magnetic conductive top cover (100).

6. The reciprocating magnetic positioning motor according to claim 5, characterized in that: The magnetic conductive top cover (100) is provided with a wire hole (110) for laying the wire of the stator coil (300) at a position corresponding to the stator coil (300), and the dustproof ring (620) is provided with a avoidance opening (621) at a position corresponding to the wire hole (110).

7. The reciprocating magnetic positioning motor according to claim 6, characterized in that: A wear-resistant wire sleeve (700) is also provided, the bottom of the wear-resistant wire sleeve (700) is plugged and connected to the wire hole (110), and the top of the wear-resistant wire sleeve (700) is provided with a resting step (710) protruding in all directions, and the bottom surface of the resting step (710) abuts against the top surface of the magnetic conductive top cover (100).

8. The reciprocating magnetic positioning motor according to claim 7, characterized in that: The dustproof ring (620) is provided with limiting bosses (622) on both sides of the top of the avoidance opening (621) and projecting toward the avoidance opening (621) for clamping and abutting the wear-resistant wire sleeve (700), and the limiting bosses (622) are located above the resting step (710) of the wear-resistant wire sleeve (700).

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