Magnetic suspension linear motor
By using a magnetic levitation linear motor structure, and utilizing the linear reciprocating motion under the action of elastic materials and high-frequency electromagnetic fields, the problems of large size, low frequency, and high cost of linear motors in small electrical appliances are solved, achieving miniaturization, high frequency, low cost, and good heat dissipation.
Patent Information
- Application Number
- CN202520274005.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Existing linear motors are too bulky in small appliances such as shavers and electric clippers, making it difficult to achieve high-frequency reciprocating motion. They are also costly, have short lifespans, and poor heat dissipation.
It adopts a magnetic levitation linear motor structure, using left and right swing arms and induction blocks made of elastic materials to achieve linear reciprocating motion under the action of high-frequency electromagnetic field, reducing friction. The combination design of plastic and metal materials reduces costs and improves heat dissipation performance.
It achieves miniaturized, high-frequency reciprocating motion, reduces production costs, extends motor life, and improves heat dissipation performance.
Smart Images
Figure CN223693812U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor technical field, concretely relates to a magnetic suspension linear motor. BACKGROUND
[0002] Linear motor is a kind of electric power transmission device that directly converts electric energy into linear motion mechanical energy, linear motor is also called linear motor, has the advantages of high precision, fast response, wide speed range, and is widely used.
[0003] In the field of shaver, electric clipper etc. also need to make high-frequency reciprocating linear motion electric drive device, but the volume of conventional linear motor is relatively large compared with shaver, electric clipper etc. Small electric appliances, and shaver, electric clipper etc. Need super high frequency, and often need several thousand or even tens of thousands of reciprocating motion per minute. Many cheap shavers, electric clippers on the market often use ordinary rotating motor, and then convert rotary motion into linear reciprocating motion through mechanical structure, and the thrust of linear motion through mechanical structure is unstable.
[0004] At the same time, as shaver, electric clipper is currently a highly competitive product in the market, the terminal market sales price is low, basically between dozens to a few hundred, so the cost of motor will be less, and the market also requires motor to have excellent service life and good heat dissipation. INVENTION CONTENTS
[0005] In order to overcome the deficiencies of the background art, the utility model provides a magnetic suspension linear motor.
[0006] The technical scheme of the utility model is: including support seat, the support seat is installed with iron core through buckle, the iron core is " mountain " type, the middle of " mountain " type of iron core is provided with coil winding on, the coil winding is connected with electric wire, the support seat is installed with left and right swing arm, the left and right swing arm is composed of left swing arm, right swing arm, installation platform, the left swing arm and right swing arm are respectively located on the left and right sides of installation platform and form a " U " type.
[0007] The installation platform is fixedly installed with swing head seat, the left and right sides of swing head head portion of swing head seat are respectively installed with spring, the upper side of support seat is fixedly installed with upper cover, the lower side of support seat is fixedly installed with lower cover, the upper cover and lower cover are installed in cooperation and the coil winding and iron core are wrapped by the upper cover and lower cover.
[0008] The upper cover and lower cover are fixedly installed with spring seat through thread, the left and right sides of spring seat are equipped with spring seat first flange, one end of spring is on swing head head portion, the other end of spring is on spring seat first flange.
[0009] The left swing arm and the right swing arm are made of material with good elasticity.
[0010] The swing head base is fixedly installed with an induction block near the end of the coil winding, a suspension distance is arranged between the induction block and the coil winding, and the induction block makes linear reciprocating motion left and right under the action of the high-frequency electromagnetic field of the coil winding.
[0011] Preferably, the left and right sides of the support base are respectively provided with positioning holes and threaded holes, the left swing arm and the right swing arm are respectively provided with positioning pins at the corresponding positions of the positioning holes, the positioning pins are matched with the positioning holes, the left swing arm and the right swing arm are respectively provided with second through holes at the corresponding positions of the threaded holes, and the left swing arm and the right swing arm are respectively screwed on the threaded holes through the screws passing through the second through holes.
[0012] Preferably, the mounting platform of the left and right swing arms is installed with a fixed block near the side of the coil winding, and the swing head base is screwed on the fixed block through the first through hole of the mounting platform.
[0013] Preferably, the left and right swing arms are integrally injection molded by ABS plastic, and the left swing arm and the right swing arm are respectively provided with long waist holes at the middle positions to make the middle positions of the left swing arm and the right swing arm thin and have excellent deformation ability.
[0014] Preferably, the long waist hole is in the shape of gradually narrowing from the middle to the two ends.
[0015] Preferably, the left and right swing arms are integrally stamped by thin metal with excellent elasticity.
[0016] Preferably, the mounting platform is integrally injection molded by plastic, the left swing arm and the right swing arm are made of thin metal with excellent elasticity, and the left swing arm and the right swing arm are fixed with the mounting platform by screws.
[0017] Preferably, the number of the induction blocks and the swing head bases is 2, the number of the springs is 4, one induction block, one swing head base and two springs constitute one reciprocating linear motion mechanism, and the left and right swing arms are respectively provided with notches.
[0018] Preferably, the upper cover and the lower cover are made of plastic, and the upper cover and the lower cover are respectively provided with heat dissipation grooves at the corresponding positions of the coil winding.
[0019] Preferably, a swing head is fixed on the head of the swing head.
[0020] Preferably, the swing head head is fixed with a swing head, the swing head head left and right sides are equipped with round table, the spring seat first flange is equipped with cylindrical convex, one end of the spring is fixedly installed on the round table, the other end of the spring is fixedly installed on the cylindrical convex, the spring seat intermediate is equipped with square hole, the swing head seat extends to the outside through the square hole.
[0021] The utility model has the advantages of small size, high frequency (thousands to tens of thousands of frequency per minute), low production cost, convenient mass production, long service life, less heating, good heat dissipation performance, direct output of reciprocating linear motion of motor, and no need of conversion mechanism. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is the exploded view of the utility model.
[0023] Figure 2 It is the structure schematic view of the utility model.
[0024] Figure 3 It is the structure schematic view of the utility model without upper cover and lower cover.
[0025] Figure 4 It is the structure schematic view of the utility model support seat.
[0026] Figures 5-6 It is the structure schematic view of the utility model left and right swing arm.
[0027] Figures 7-8 It is the structure schematic view of the utility model swing head seat.
[0028] Figures 9-10 It is the structure schematic view of the utility model fixed block.
[0029] Figures 11-12 It is the structure schematic view of the utility model spring seat.
[0030] Figure 13 It is Figure 3 It is the partial close-up view of A in the middle.
[0031] Figures 14-15 It is the structure schematic view of another embodiment of the utility model.
[0032] Figures 1-15In, 1, support seat, 101, positioning hole, 102, threaded hole, 2, coil winding, 3, core, 4, induction block, 5, spring, 6, left and right swing arm, 601, left swing arm, 602, right swing arm, 603, mounting platform, 604, first through hole, 605, positioning pin, 606, second through hole, 607, long waist hole, 608, notch, 7, swing head seat, 701, swing head head, 702, circular table, 8, spring, 91, upper cover, 92, lower cover, 93, heat dissipation groove, 10, spring seat, 1001, spring seat first flange, 1002, spring seat second flange, 1003, cylindrical protrusion, 1004, square hole, 11, fixed block, 12, swing head, a, suspended distance. DETAILED DESCRIPTION
[0033] The embodiments of the utility model are further explained below with reference to the drawings:
[0034] As Figures 1-15 Indicated, this embodiment provides a kind of magnetic suspension linear motor, including support seat 1, the support seat 1 is equipped with core 3 by buckle, the core 3 is " mountain " type, the coil winding 2 is sleeved on the middle of " mountain " type of core 3, the coil winding 2 is connected wire, the support seat 1 is installed with left and right swing arm 6, the left and right swing arm 6 is by left swing arm 601, right swing arm 602, mounting platform 603 is formed, the left swing arm 601, right swing arm 602 are respectively located on the left and right sides of mounting platform 603 and form a " U " type.
[0035] The mounting platform 603 is fixedly installed with swing head seat 7, the left and right sides of swing head head 701 of swing head seat 7 are each installed with spring 8, the upper side of support seat 1 is fixedly installed with upper cover 91, the lower side of support seat 1 is fixedly installed with lower cover 92, the upper cover 91 and lower cover 92 are mutually matched and installed and upper cover 91 and lower cover 92 are wrapped coil winding 2, core 3.
[0036] The upper cover 91 and lower cover 92 are fixedly installed with spring seat 10 on the threaded, the left and right sides of spring seat 10 are equipped with spring seat first flange 1001, one end of spring 8 is on swing head head 701, the other end of spring 8 is on spring seat first flange 1001.
[0037] The left swing arm 601 and right swing arm 602 are made of material with good elasticity.
[0038] The swing head seat 7 is fixedly installed with induction block 4 close to coil winding 2 end, the suspended distance a between induction block 4 and coil winding 2 is equipped, induction block 4 makes left and right linear reciprocating motion under the action of high-frequency electromagnetic field of coil winding 2.
[0039] Since one end of the left swing arm 601 and the right swing arm 602 is fixedly installed on the support seat 1, and since the left swing arm 601 and the right swing arm 602 are made of elastic material, and since the induction block 4 is fixed with the installation platform 603, the induction block 4 can only make reciprocating linear motion with the left swing arm 601 and the right swing arm 602 under the action of the high-frequency electromagnetic field. Since there is a suspended distance a between the induction block 4 and the coil winding 2, the reciprocating linear motion of the induction block 4 can greatly reduce the friction.
[0040] Preferably, the suspended distance a is preferably 0.2mm~0.5mm, and usually 0.3mm, so that the suspended distance a is high in electromagnetic field strength and low in processing progress.
[0041] In order to more conveniently install the left and right swing arms 6 on the support seat 1, preferably, the left and right sides of the support seat 1 are each provided with a positioning hole 101 and a threaded hole 102, the left swing arm 601 and the right swing arm 602 are each provided with a positioning pin 605 at the corresponding position of the positioning hole 101, the positioning pin 605 and the positioning hole 101 are matched with each other, and the left swing arm 601 and the right swing arm 602 are each provided with a second through hole 606 at the corresponding position of the threaded hole 102. The left swing arm 601 and the right swing arm 602 are each screwed on the threaded hole 102 through a screw passing through the second through hole 606.
[0042] The positioning pin 605 facilitates the positioning and installation of the left and right swing arms 6, and can also fix the left swing arm 601 and the right swing arm 602 more firmly when the left and right swing arms 6 are high-frequency deformed.
[0043] In order to conveniently install the swing head seat 7 on the installation platform 603, preferably, the installation platform 603 of the left and right swing arms 6 is installed with a fixed block 11 near the coil winding 2, and the swing head seat 7 is screwed on the fixed block 11 through a first through hole 604 of the installation platform 603. In this way, the swing head seat 7 and the fixed block 11 can clamp the installation platform 603.
[0044] In order to more conveniently produce in large scale and in batches, preferably, the left and right swing arms 6 are integrally injection molded by ABS plastic, and the left swing arm 601 and the right swing arm 602 are each provided with a long waist hole 607 at the middle position to make the middle position of the left swing arm 601 and the right swing arm 602 thin and have excellent deformation ability. ABS plastic has the advantages of low cost, convenient mold opening, large batch production, low injection molding cost, etc., and the long waist hole 607 can be directly integrally injection molded during injection molding. In addition, modified ABS plastic can also be used.
[0045] In order to improve the service life of the left swing arm 601 and the right swing arm 602, preferably, the long waist hole 607 is gradually narrowed from the widest middle position to both ends, so that there is no sharp corner, stress concentration is reduced, and injection molding is facilitated.
[0046] There is another embodiment for the left and right swing arms 6. That is, the left and right swing arms 6 are integrally stamped from thin metal with good elasticity, but the overall stamping cost is higher than ABS plastic injection molding, and the installation platform 603 is also thinned.
[0047] Preferably, the installation platform 603 is integrally injection molded from plastic, the left swing arm 601 and the right swing arm 602 are made of thin metal with good elasticity, and the left swing arm 601 and the right swing arm 602 are fixed between the installation platform 603 by screws. This embodiment is equivalent to using elastic metal for the left swing arm 601 and the right swing arm 602, and using plastic for the installation platform 603, which ensures the elastic line capability of the left swing arm 601 and the right swing arm 602, and also ensures the high strength of the installation platform 603.
[0048] For some shavers and electric clippers designed with multiple cutter heads, preferably, the number of the induction blocks 4 and the swing head bases 7 is 2, the number of the springs 8 is 4, 1 induction block 4, 1 swing head base 7 and 2 springs 8 constitute a group of reciprocating linear motion mechanisms, and the left and right swing arms 6 are provided with notches 608, which divide the left and right swing arms 6 into 2 left swing arms 601 and 2 right swing arms 602. In this way, one product of the utility model can drive two cutter heads to move, and of course more groups can be used as needed.
[0049] In order to facilitate the production of the upper cover 91 and the lower cover 92 and improve the heat dissipation capacity, preferably, the upper cover 91 and the lower cover 92 are made of plastic, and the upper cover 91 and the lower cover 92 are provided with heat dissipation grooves 93 at positions corresponding to the coil winding 2. When the product of the utility model works, the induction block 4 and the left and right swing arms 6 move back and forth at high frequency, driving air to enter and exit from the heat dissipation grooves 93, thereby improving the heat dissipation capacity.
[0050] In order to facilitate the installation of the cutter head and the swing head head part 701, the swing head 12 is fixed on the swing head head part 701, the swing head head part 701 is provided with circular tables 702 on the left and right sides, the spring seat first flange 1001 is provided with a cylindrical protrusion 1003, one end of the spring 8 is fixedly installed on the circular table 702, the other end of the spring 8 is fixedly installed on the cylindrical protrusion 1003, and the spring seat 10 is provided with a square hole 1004, and the swing head base 7 extends to the outside through the square hole 1004.
[0051] Of course, according to the actual working conditions, different shapes and sizes of swing heads 12 can be designed, such as Figures 14-15 as shown.
[0052] The spring seat 10 is also provided with a spring seat second flange 1002, and the spring seat 10 is installed with the upper cover 91 and the lower cover 92 through the holes on the spring seat second flange 1002.
[0053] This embodiment should not be considered as limiting the utility model, but any improvement based on the spirit of the utility model should be within the protection scope of the utility model.
Claims
1. A magnetic levitation linear motor, comprising a support base (1), characterized in that: The support base (1) is fitted with an iron core (3) by a snap fastener. The iron core (3) is in the shape of a "mountain". A coil winding (2) is fitted in the middle of the "mountain" shape of the iron core (3). The coil winding (2) is connected to an electric wire. The support base (1) is fitted with left and right swing arms (6). The left and right swing arms (6) are composed of a left swing arm (601), a right swing arm (602), and an installation platform (603). The left swing arm (601) and the right swing arm (602) are located on the left and right sides of the installation platform (603) respectively, forming a "U" shape. A swing head seat (7) is fixedly installed on the installation platform (603). Springs (8) are installed on the left and right sides of the swing head head (701) of the swing head seat (7). An upper cover (91) is fixedly installed on the upper side of the support seat (1). A lower cover (92) is fixedly installed on the lower side of the support seat (1). The upper cover (91) and the lower cover (92) are installed together and the upper cover (91) and the lower cover (92) cover the coil winding (2) and the iron core (3). Spring seats (10) are fixedly installed on the upper cover (91) and lower cover (92) by threads. The left and right sides of the spring seats (10) are provided with spring seat first flanges (1001). One end of the spring (8) rests on the head of the swing head (701), and the other end of the spring (8) rests on the spring seat first flange (1001). The left swing arm (601) and the right swing arm (602) are made of a material with good elasticity; The swing head seat (7) has an induction block (4) fixedly installed at the end near the coil winding (2). There is a suspension distance (a) between the induction block (4) and the coil winding (2). The induction block (4) moves back and forth in a straight line under the action of the high-frequency electromagnetic field of the coil winding (2).
2. The magnetic levitation linear motor according to claim 1, characterized in that: The support base (1) has a positioning hole (101) and a threaded hole (102) on its left and right sides respectively. The left swing arm (601) and the right swing arm (602) are provided with a positioning pin (605) at the corresponding position of the positioning hole (101). The positioning pin (605) cooperates with the positioning hole (101). The left swing arm (601) and the right swing arm (602) are provided with a second through hole (606) at the corresponding position of the threaded hole (102). The left swing arm (601) and the right swing arm (602) are each screwed onto the threaded hole (102) by a screw passing through the second through hole (606).
3. A magnetic levitation linear motor according to claim 1, characterized in that: The mounting platform (603) of the left and right swing arms (6) is equipped with a fixing block (11) on the side of the coil winding (2) and the swing head seat (7) is screwed onto the fixing block (11) by a screw passing through the first through hole (604) of the mounting platform (603).
4. A magnetic levitation linear motor according to claim 1, characterized in that: The left and right swing arms (6) are integrally injection molded from ABS plastic. The left swing arm (601) and the right swing arm (602) are provided with elongated waist holes (607) in the middle position, which makes the middle position of the left swing arm (601) and the right swing arm (602) thinner and has excellent deformation ability.
5. A magnetic levitation linear motor according to claim 4, characterized in that: The elongated waist hole (607) is widest in the middle and gradually narrows at both ends.
6. A magnetic levitation linear motor according to claim 1, characterized in that: The left and right swing arms (6) are made of thin metal with excellent elasticity through integral stamping.
7. A magnetic levitation linear motor according to claim 1, characterized in that: The installation platform (603) is made of plastic injection molding. The left swing arm (601) and the right swing arm (602) are both made of thin metal with excellent elasticity. The left swing arm (601) and the right swing arm (602) are fixed to the installation platform (603) with screws.
8. A magnetic levitation linear motor according to claim 1, characterized in that: The number of the sensing block (4) and the swing head seat (7) are both 2, and the number of the springs (8) is 4. One sensing block (4), one swing head seat (7) and two springs (8) constitute a set of reciprocating linear motion mechanism. The left and right swing arms (6) have a notch (608) in the middle. The notch (608) divides the left and right swing arms (6) into two left swing arms (601) and two right swing arms (602).
9. A magnetic levitation linear motor according to claim 1, characterized in that: Both the upper cover (91) and the lower cover (92) are made of plastic, and the upper cover (91) and the lower cover (92) are provided with heat dissipation grooves (93) at the corresponding positions of the coil winding (2).
10. A magnetically levitated linear motor according to any one of claims 1-9, characterized in that: The swing head (701) is fixed with a swing head (12). The swing head (701) has a frustum (702) on the left and right sides. The first flange (1001) of the spring seat has a cylindrical protrusion (1003). One end of the spring (8) is fixedly installed on the frustum (702), and the other end of the spring (8) is fixedly installed on the cylindrical protrusion (1003). The spring seat (10) has a square hole (1004) in the middle. The swing head seat (7) extends to the outside through the square hole (1004).