Swing motor and electric device

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a swing motor and an electric device, in the swing motor, a stator mechanism comprises a first coil, a second coil and a first magnet yoke, a mover mechanism comprises a swing arm frame, a first permanent magnet group and a second permanent magnet group, a main body support is sequentially provided with a stator placing position and a mover placing position, the stator placing position is provided with a positioning protruding block, the stator mechanism is installed on the stator placing position, and the positioning protruding block is connected with the supporting seat in a hanging mode. And the swing arm frame is rotationally arranged on the rotor placing position. According to the swing motor, the assembly operation is simple, and the air gap between the rotor mechanism and the stator mechanism can be accurately controlled by controlling the distance between the positioning bump and the rotor placing position, so that the size of the air gap is not influenced by magnetic pulling force any more, and the consistency of the air gap is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor technical field, especially, a kind of swing motor and electric device are involved. BACKGROUND

[0002] Motor is a kind of electromagnetic device to realize the conversion of electric energy according to electromagnetic induction law, it is widely used in various fields, is indispensable prime mover in today's society, provides power source for a large number of electric appliances or various machines. Swing motor is a kind of motor that can realize high-frequency swing, it is widely used in electric shaver, electric brush and other equipment.

[0003] The applicant finds that the prior art also provides a swing motor (application number: 201610095990.0, patent name: swing motor and electric hair clipper), which generally uses a strong magnetic permanent magnet (neodymium iron boron, etc.), and a certain gap is needed between the permanent magnet and the stator yoke to make the stator assembly drive the permanent magnet to swing after being energized. There is a strong magnetic attraction between the permanent magnet and the stator yoke. In order to ensure the gap between the permanent magnet and the stator yoke, the prior art usually inserts an auxiliary spacer between the permanent magnet and the stator yoke, and then pulls out the auxiliary spacer after assembly is completed. This swing motor has the problems of difficult assembly operation, inconsistent air gap due to the gap between the screw fixing, and slow deformation of the main support of the swing motor under the strong magnetic force between the permanent magnet and the stator yoke. SUMMARY

[0004] The utility model embodiment provides a kind of swing motor and electric device, to solve the technical problems, such as difficult assembly operation and difficult to ensure the consistency of air gap, in the swing motor of prior art.

[0005] An embodiment of the utility model provides a swing motor, comprising a stator mechanism, a rotor mechanism and a main support.

[0006] The stator mechanism includes a first coil, a second coil and a first yoke. The first yoke includes a support seat and first and second legs connected to the support seat. The first yoke is made of a magnetic material and has a U-shaped structure. The first coil is sleeved on the first leg, and the second coil is sleeved on the second leg.

[0007] The mover mechanism comprises a swing arm frame, a swing shaft, a first permanent magnet group and a second permanent magnet group; the swing arm frame is formed by using a magnetic conductive material; one end of the swing arm frame close to the first magnetic yoke serves as a permanent magnet yoke, and the other end of the swing arm frame away from the first magnetic yoke is rotatably installed on the swing shaft; the first permanent magnet group is arranged corresponding to the first foot, and the second permanent magnet group is arranged corresponding to the second foot; the first permanent magnet group comprises a first permanent magnet and a second permanent magnet which are spaced apart and installed on the permanent magnet yoke, and the second permanent magnet group comprises a third permanent magnet and a fourth permanent magnet which are spaced apart and installed on the permanent magnet yoke; the end faces of the first permanent magnet and the second permanent magnet corresponding to the first foot are opposite in polarity, the end faces of the third permanent magnet and the fourth permanent magnet corresponding to the second foot are opposite in polarity, and the end face of the first permanent magnet corresponding to the first foot and the end face of the fourth permanent magnet corresponding to the second foot are the same in polarity;

[0008] The main body support is sequentially provided with the stator placing position and the mover placing position; the stator placing position is provided with a positioning protrusion, and the support seat is hung on the positioning protrusion; the mover placing position is provided with a shaft hole; the swing shaft is installed on the shaft hole, and the swing arm frame is rotatably installed on the mover placing position.

[0009] Optionally, the swing motor further comprises a first elastic body and a second elastic body; the main body support is provided with a first circular arc groove and a second circular arc groove; the first elastic body is installed in the first circular arc groove, and the second elastic body is installed in the second circular arc groove; the first elastic body and the second elastic body respectively abut against opposite sides of the swing arm frame.

[0010] Optionally, the first elastic body comprises a first cylindrical body, and a plurality of first side grooves are circumferentially and spaced apart arranged on the side wall of the first cylindrical body.

[0011] The second elastic body comprises a second cylindrical body, and a plurality of second side grooves are circumferentially and spaced apart arranged on the side wall of the second cylindrical body.

[0012] Optionally, the stator placing position is provided with a first vertical side wall on both sides, the mover placing position is provided with a second vertical side wall on both sides, one end of the second vertical side wall is connected to the first vertical side wall, and the other end of the second vertical side wall is connected to the groove wall of the first circular arc groove and the second circular arc groove.

[0013] Optionally, the main body support is further provided with a reinforcing rib, the reinforcing rib separates the stator placing position into a first placing position and a second placing position, the first coil is located in the first placing position, and the second coil is located in the second placing position; the positioning protrusion is arranged on the reinforcing rib, and the positioning protrusion is provided with a positioning surface for hanging the support seat.

[0014] Optionally, the swing motor further comprises a pressing shaft plate and a cover plate; the pressing shaft plate is installed on the main body support and abuts against the swing shaft; the cover plate is installed on the main body support and is used for pressing the first leg and the second leg on the stator placing position.

[0015] Optionally, the swing motor further comprises an output lever installed on the swing arm support, and a force output portion is arranged on the output lever.

[0016] The force output portion comprises a first arc-shaped convex portion and a second arc-shaped convex portion arranged on opposite sides of the swing arm support, an axis of the first arc-shaped convex portion coincides with a circular axis of the second arc-shaped convex portion, and the axis of the first arc-shaped convex portion is parallel to the swing shaft.

[0017] Optionally, the first permanent magnet group further comprises a fifth permanent magnet installed on the permanent magnet yoke, and the fifth permanent magnet is located between the first permanent magnet and the second permanent magnet.

[0018] An end face polarity of the fifth permanent magnet towards one end of the first permanent magnet is the same as an end face polarity of the first permanent magnet, and an end face polarity of the fifth permanent magnet towards one end of the second permanent magnet is the same as an end face polarity of the second permanent magnet.

[0019] The second permanent magnet group further comprises a sixth permanent magnet installed on the permanent magnet yoke, and the sixth permanent magnet is located between the third permanent magnet and the fourth permanent magnet.

[0020] An end face polarity of the sixth permanent magnet towards one end of the third permanent magnet is the same as an end face polarity of the third permanent magnet, and an end face polarity of the sixth permanent magnet towards one end of the fourth permanent magnet is the same as an end face polarity of the fourth permanent magnet.

[0021] Optionally, an end of the first leg away from the support base is provided with a first circular arc surface, an end of the second leg away from the support base is provided with a second circular arc surface, and the first circular arc surface and the second circular arc surface are both centered on the swing shaft; the first permanent magnet, the second permanent magnet, the third permanent magnet and the fourth permanent magnet are distributed on the same circle centered on the swing shaft.

[0022] An embodiment of the utility model further provides an electric device, which comprises an execution component, a gear adjusting mechanism and the swing motor.

[0023] The gear adjusting mechanism comprises a wrench, a shaft body, an elastic clamping needle assembly, an output connecting rod, a sector body provided with a plurality of concave-convex tooth grooves, and a connecting piece provided with a guide hole; the sector body is arranged on the shaft body and provided with a convex column body, the output connecting rod is slidingly installed in the guide hole and rotationally connected with the convex column body; the elastic clamping needle assembly is installed on the connecting piece, and a needle head on the elastic clamping needle assembly abuts against one of the concave-convex tooth grooves; and the connecting piece is installed on the main body support.

[0024] The shaft body is rotationally installed between the main body support and the connecting piece; the executing component is slidingly or rotationally arranged outside the main body support and abuts against the output connecting rod and the swing arm support; and the output connecting rod is used to drive the executing component to move outside the main body support.

[0025] In the utility model, the main body support is sequentially provided with a stator placing position and a rotor placing position connected with the stator placing position, the stator placing position is provided with a positioning protruding block, the supporting seat is hung on the positioning protruding block, the rotor placing position is provided with a shaft hole, a swing shaft is installed in the shaft hole, and the swing arm support is rotationally installed on the swing shaft. Specifically, the swing shaft is first installed in the shaft hole of the rotor placing position, then the swing arm support is rotationally installed on the swing shaft, so that the swing arm support is rotationally installed on the rotor placing position, one end of the swing arm support towards the stator placing position is provided with the first permanent magnet group and the second permanent magnet group, the stator assembly is pushed from one end of the stator placing position away from the rotor placing position to the rotor placing position, the first permanent magnet group magnetically attracts the first supporting leg, the second permanent magnet group magnetically attracts the second supporting leg, the stator mechanism moves towards the rotor mechanism until the supporting seat is hung on the positioning protruding block, and finally the stator mechanism is fixed on the stator placing position by using screws and other fasteners. The swing motor is simple in assembly operation, the distance between the positioning protruding block and the rotor placing position is controlled, the air gap between the rotor mechanism and the stator mechanism is accurately controlled, the air gap size is not affected by the magnetic force, and the air gap consistency is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be briefly introduced the drawings needed to be used in the description of the utility model embodiment, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without paying the creativity labor.

[0027] Figure 1 It is the structure schematic diagram of the swing motor provided by an embodiment of the utility model;

[0028] Figure 2 is a structural schematic view of a main support of a swing motor provided by an embodiment of the present application;

[0029] Figure 3 is a partial exploded structural schematic view of a swing motor provided by an embodiment of the present application;

[0030] Figure 4 (a) is a schematic diagram of a swing motor provided by an embodiment of the present application;

[0031] Figure 4 (b) is Figure 4 (a) after the current direction is changed;

[0032] Figure 5 is a schematic diagram of a swing motor provided by an embodiment of the present application;

[0033] Figure 6 is a partial structural schematic view of an electric device provided by an embodiment of the present application;

[0034] Figure 7 is a structural schematic view of an adjusting mechanism of an electric device provided by an embodiment of the present application;

[0035] Figure 8 is an exploded structural schematic view of an adjusting mechanism of an electric device provided by an embodiment of the present application;

[0036] Figure 9 is a structural schematic view of an electric device provided by an embodiment of the present application;

[0037] Figure 10 is a structural schematic view of an electric device provided by an embodiment of the present application;

[0038] Figure 11 is a stress curve diagram of an elastic body without a side recess, a spring and an elastic body with a side recess provided by an embodiment of the present application.

[0039] The reference signs in the specification are as follows:

[0040] 1, stator mechanism; 11, first coil; 12, second coil; 13, first magnetic yoke; 131, support seat; 1311, second fastening hole; 132, first supporting leg; 133, second supporting leg; 14, fastener; 2, mover mechanism; 21, swing arm frame; 211, permanent magnet yoke; 22, first permanent magnet group; 221, first permanent magnet; 222, second permanent magnet; 223, fifth permanent magnet; 23, second permanent magnet group; 231, third permanent magnet; 232, fourth permanent magnet; 233, sixth permanent magnet; 24, swing shaft; 3, main body support; 31, stator placement site; 311, first placement site; 312, second placement site; 313, first vertical side wall; 32, mover placement site; 321, second vertical side wall; 33, positioning bump; 34, reinforcing rib; 35, installation through slot; 36, first fastening hole; 37, first circular arc slot; 38, second circular arc slot; 39, shaft hole; 301, hollow hole; 302, third semicircular arc slot; 4, first elastic body; 41, first side recess; 5, second elastic body; 51, second side recess; 62, shaft pressing plate; 63, cover plate; 64, output lever; 641, force output part; 7, adjusting mechanism; 71, wrench; 72, shaft body; 73, elastic clamping needle assembly; 74, output connecting rod; 75, fan-shaped body; 751, concave-convex tooth groove; 752, convex column body; 76, support frame; 761, guide hole; 762, fourth semicircular arc slot; 8, execution component. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.

[0042] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0043] In the description of the utility model, need explanation, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication. For ordinary skilled in the art, can understand the specific meaning of the above-mentioned terms in the utility model according to specific circumstances.

[0044] As Figure 1 shown, an embodiment of the utility model provides a swing motor, including stator mechanism 1, rotor mechanism 2 and main support 3;

[0045] As Figure 3 and Figure 4 shown, the stator mechanism 1 includes first coil 11, second coil 12 and first magnetic yoke 13, the first magnetic yoke 13 includes support seat 131 and interval connection first support leg 132 and second support leg 133 on the support seat 131, the first magnetic yoke 13 is formed with magnetic material, and it is U-shaped structure, the first coil 11 is sleeved on the first support leg 132, and the second coil 12 is sleeved on the second support leg 133, the first coil 11 and the second coil 12 are all composed of plastic hollow support and enameled wire wound on hollow support, the first magnetic yoke 13 is U-shaped, and is formed with magnetic material, can be formed by stamping riveting of silicon steel sheet, because magnetic circuit is similar to square box, need not rotate, therefore silicon steel sheet can adopt oriented silicon steel sheet, and the iron loss of oriented silicon steel sheet is low, and the magnetic induction intensity is high, can reduce the copper wire consumption, as preferred, the support seat 131, first support leg 132 and the second support leg 133 are integrally formed, and it is U-shaped structure, namely first magnetic yoke 13 is U-shaped magnetic yoke.

[0046] As Figure 3 and Figure 4As shown, the mover mechanism 2 comprises a swing arm frame 21, a swing shaft 24, a first permanent magnet group 22 and a second permanent magnet group 23; the swing arm frame 21 is formed by a magnetic conductive material, one end close to the first magnetic yoke 13 as a permanent magnet yoke 211, the permanent magnet yoke 211 is installed with the first permanent magnet group 22 and the second permanent magnet group 23, one end of the swing arm frame 21 away from the first magnetic yoke 13 is provided with a swing shaft hole, the swing arm frame 21 is rotationally installed on the swing shaft 24; the first permanent magnet group 22 is arranged corresponding to the first leg 132, the second permanent magnet group 23 is arranged corresponding to the second leg 133; the first permanent magnet group 22 comprises a first permanent magnet 221 and a second permanent magnet 222 which are installed on the permanent magnet yoke 211 in intervals, the second permanent magnet group 23 comprises a third permanent magnet 231 and a fourth permanent magnet 232 which are installed on the permanent magnet yoke 211 in intervals, the end faces of the first permanent magnet 221 and the second permanent magnet 222 corresponding to the first leg 132 are opposite in polarity, the end faces of the third permanent magnet 231 and the fourth permanent magnet 232 corresponding to the second leg 133 are opposite in polarity, the end face polarity of the first permanent magnet 221 corresponding to the first leg 132 is the same as the end face polarity of the fourth permanent magnet 232 corresponding to the second leg 133; it can be understood that the end face polarity refers to the polarity of the permanent magnet towards the end of the leg. Further, the swing arm frame 21 is divided into two sections, namely an inner arm and an outer arm, with the swing shaft 24 as a dividing point; the inner arm is a section of the swing arm frame 21 close to the first magnetic yoke 13 (the end is the permanent magnet yoke 211), and the outer arm is another section of the swing arm frame 21 away from the first magnetic yoke 13; the first permanent magnet group 22 and the second permanent magnet group 23 are both installed on one end of the inner arm close to the first magnetic yoke 13 (i.e. the permanent magnet yoke 211); the outer arm can serve as the output part of the swing motor, or an output lever 64 can be installed on the outer arm to serve as the output part.

[0047] In a specific embodiment, one end of the first leg 132 away from the support base 131 is provided with a first circular arc surface, one end of the second leg 133 away from the support base 131 is provided with a second circular arc surface, and the first circular arc surface and the second circular arc surface are both centered on the swing shaft 24; the first permanent magnet 221, the second permanent magnet 222, the third permanent magnet 231 and the fourth permanent magnet 232 are distributed on the same circumference centered on the swing shaft 24; it can be understood that the end faces of the first permanent magnet 221, the second permanent magnet 222, the third permanent magnet 231 and the fourth permanent magnet 232 are directly opposite the axis of the swing shaft 24.

[0048] As Figure 1 and Figure 2As shown, the main support 3 is sequentially provided with a stator placing position 31 and a mover placing position 32, the stator placing position 31 is provided with a positioning protrusion 33, and the support seat 131 is hung on the positioning protrusion 33; the mover placing position 31 is provided with a shaft hole 39, the swing shaft 24 is installed in the shaft hole 39, and the swing arm frame 21 is rotationally installed on the swing shaft 24. Understandably, the positioning protrusion 33 protrudes towards the upper side of the stator placing position 31; the stator placing position 31 and the mover placing position 32 include but are not limited to receiving grooves, mounting surfaces, etc.

[0049] In the utility model, the main support 3 is sequentially provided with a stator placing position 31 and a mover placing position 32 connected with the stator placing position 31, the stator placing position 31 is provided with a positioning protrusion 33, and the support seat 131 is hung on the positioning protrusion 33; the mover placing position 31 is provided with a shaft hole 39, the swing shaft 24 is installed in the shaft hole 39, and the swing arm frame 21 is rotationally installed on the swing shaft 24 and located at the mover placing position 31. Specifically, first, the swing shaft 24 is installed in the shaft hole 39 of the mover placing position 31, then the swing arm frame 21 is rotationally installed on the swing shaft 24, so that the swing arm frame 21 is rotationally installed on the mover placing position 32, and the permanent magnet yoke 211 at one end of the swing arm frame 21 towards the stator placing position 31 is provided with the first permanent magnet group 22 and the second permanent magnet group 23; thereafter, during the process that the stator assembly is pushed from one end of the stator placing position 31 away from the mover placing position 32 to the mover placing position 32, due to the magnetic attraction force of the first permanent magnet group 22 to the first supporting leg 132 and the magnetic attraction force of the second permanent magnet group 23 to the second supporting leg 133, the stator mechanism 1 moves towards the mover mechanism 2 until the support seat 131 is hung on the positioning protrusion 33; finally, the stator mechanism 1 is fixed on the stator placing position 31 by using a screw or other fastener. The swing motor has simple assembly operation, and by controlling the distance between the positioning protrusion 33 and the mover placing position 32, the air gap between the mover mechanism 2 and the stator mechanism 1 (i.e. the air gap between the first permanent magnet group 22 and the second permanent magnet group 23 and the first magnetic yoke 13) can be accurately controlled, so that the air gap size is no longer affected by the magnetic force, and the consistency of the air gap is ensured, thereby ensuring the consistency of the swing motor.

[0050] In an embodiment, as Figure 2As shown, the inner wall of the stator placement site 31 is provided with a reinforcing rib 34, which separates the stator placement site 31 into a first placement site 311 and a second placement site 312, the first coil 11 is located in the first placement site 311, and the second coil 12 is located in the second placement site 312. Understandably, the reinforcing rib 34 extends along the front-rear direction of the stator placement site 31 and can extend to the bottom surface of the rotor placement site 32 until the swing shaft 24, thereby enhancing the strength of the main body support 3, and the first placement site 311 and the second placement site 312 are respectively located on the left and right sides of the reinforcing rib 34. In a specific embodiment, as shown in Figure 9 The reinforcing rib 34 penetrates the bottom surface of the main body support 3. Understandably, the reinforcing rib 34 penetrates longitudinally and is on the center line of the main body support 3, thereby enhancing the strength and rigidity of the main body support 3.

[0051] The positioning lug 33 is arranged on the reinforcing rib 34, and the positioning lug 33 is provided with a positioning surface for hanging the support seat 131. Optionally, the positioning lug 33 protrudes above the reinforcing rib 34, and the positioning surface is arranged on the side of the positioning lug 33. When the support seat 131 is hung on the positioning lug 33, the positioning surface abuts (hangs) with the support seat 131, thereby limiting the first magnetic yoke 3.

[0052] The main body support 3 is also provided with a mounting through slot 35, which is connected to one end of the stator placement site 31 away from the rotor placement site 32, and the bottom surface of the mounting through slot 35 is a stator mounting surface perpendicular to the positioning surface. Understandably, the positioning surface is manufactured based on the stator mounting surface, which can ensure that the positioning surface and the stator mounting surface are perpendicular to each other.

[0053] Specifically, during the installation of the stator mechanism 1 through the mounting through slot 35 in the stator placement site 31, the positioning lug 33 relatively slides in the gap between the first coil 11 and the second coil 12 until the support seat 131 is hung on the positioning surface of the positioning lug 33. At this time, the first coil 11 is located in the first placement site 311, and the second coil 12 is located in the second placement site 312. In this embodiment, the design of the reinforcing rib 34 enhances the strength and rigidity of the main body support 3, so that the main body support 3 is not easy to deform under strong magnetic attraction. The design of the mounting through slot 35 further improves the convenience of assembling the swing motor.

[0054] In an embodiment, as shown in Figure 2As shown, the stator placement site 31 is provided with a first vertical sidewall 313 on both sides thereof, the mover placement site 32 is provided with a second vertical sidewall 321 on both sides thereof, one end of the second vertical sidewall 321 is connected to the first vertical sidewall 313, and the other end of the second vertical sidewall 321 is connected to the slot wall of the first circular arc slot 37 and the second circular arc slot 38. Understandably, the stator placement site 31 is provided with a first vertical sidewall 313 on both sides thereof, and the mover placement site 32 is provided with a second vertical sidewall 321 on both sides thereof; the first vertical sidewall 313 is designed such that the stator placement site 31 is a first accommodating slot; the second vertical sidewall 321 is designed such that the mover placement site 32 is a second accommodating slot connected to the first accommodating slot; the design of the first accommodating slot ensures the stability of the stator mechanism 1 installed in the stator placement site 31; and the design of the second accommodating slot ensures the stability of the mover mechanism 2 installed in the mover placement site 32.

[0055] In an embodiment, the main body support 3 is preferably made of metal die casting such as zinc alloy or aluminum alloy, as shown in Figure 2 As shown, the main body support 3 is further provided with a plurality of hollow holes 301 connected to the mover placement site 32, and the hollow holes 301 are arranged opposite to the first permanent magnet group 22 and the second permanent magnet group 23. Understandably, during high-frequency oscillation of the first permanent magnet group 22 and the second permanent magnet group 23 on the mover placement site 32, the change of the magnetic field will cause eddy current heating of the metal material bottom wall of the mover placement site 32 close to the first permanent magnet group 22 and the second permanent magnet group. The arrangement of the hollow holes 301 can reduce the amount of eddy current heating and allow heat to be dissipated to the external environment through the hollow holes 301. In addition, since the main body support 3 is made of metal die casting such as zinc alloy or aluminum alloy, the first vertical sidewall 313 and the second vertical sidewall 321 close to the first magnetic yoke 13 and the permanent magnet yoke 211 arranged on the stator placement site 31 and the mover placement site 32 not only enhance the strength of the main body support 3, but also play the role of electromagnetic shielding.

[0056] In an embodiment, as shown in Figures 1 to 3As shown, the stator installation site 31 is provided with a first fastening hole 36, the support seat 131 is provided with a second fastening hole 1311, and the stator mechanism 1 further comprises a fastener 14 inserted into the first fastening hole 36 and the second fastening hole 1311. It can be understood that the first fastening hole 36 and the second fastening hole 1311 each include but are not limited to a threaded hole, and the fastener 14 includes but is not limited to a screw or a bolt. Specifically, after the support seat 131 is hung on the positioning lug 33, the stator mechanism 1 is fixed on the stator installation site 31 by using the fastener 14 inserted into the first fastening hole 36 and the second fastener 14, thereby ensuring the stability of the stator mechanism 1 installed in the stator installation site 31.

[0057] In an embodiment, as shown in Figures 2 to 4 As shown, the swing motor further comprises a first elastic body 4 and a second elastic body 5, and the main body bracket 3 is further provided with a first circular arc groove 37 and a second circular arc groove 38; the first elastic body 4 is installed in the first circular arc groove 37, and the second elastic body 5 is installed in the second circular arc groove 38, and the first elastic body 4 and the second elastic body 5 respectively abut against opposite sides of the swing arm bracket 21. It can be understood that the first circular arc groove 37 and the second circular arc groove 38 are symmetrically arranged on opposite sides of the mover installation site 32. Specifically, in the process of swinging the swing arm bracket 21 left and right, the swing arm bracket 21 will compress the first elastic body 4 or the second elastic body 5; when the swing arm bracket 21 does not swing to the limit position, the compression amount of the first elastic body 4 or the second elastic body 5 is small, so that the reaction force of the first elastic body 4 or the second elastic body 5 is small, and the first elastic body 4 or the second elastic body 5 has little effect on the swing of the swing arm bracket 21; when the swing arm bracket 21 swings to the limit position, the compression amount of the first elastic body 4 or the second elastic body 5 rapidly increases, so that the reaction force of the first elastic body 4 or the second elastic body 5 rapidly increases, and then the first elastic body 4 or the second elastic body 5 can prevent the swing arm bracket 21 from over-swinging, and at the same time, when swinging in the opposite direction, the elastic body (the first elastic body 4 or the second elastic body 5) releases the potential energy under pressure, thereby increasing the swing torque.

[0058] In an embodiment, as shown in Figure 3As shown, the first elastic body 4 comprises a first cylinder, and a plurality of first side grooves 41 are circumferentially and evenly distributed on the sidewall of the first cylinder. Understandably, the first side grooves 41 are designed such that the influence of the first elastic body 4 on the swing arm frame 21 at the middle position of the swing range is smaller, and the pressure on the swing arm frame 21 is also within a proper range, so that the swing shaft 24 does not exert a large pressure on the bearing sleeved thereon, thereby prolonging the service life of the inverted swing motor.

[0059] The second elastic body 5 comprises a second cylinder, and a plurality of second side grooves 51 are circumferentially and evenly distributed on the sidewall of the second cylinder. Understandably, the second side grooves 51 are designed such that the influence of the second elastic body 5 on the swing arm frame 21 at the middle position of the swing range is smaller, and the pressure on the swing arm frame 21 is also within a proper range, so that the swing shaft 24 does not exert a large pressure on the bearing sleeved thereon, thereby prolonging the service life of the inverted swing motor. That is, the reaction force of the elastic body (i.e. the pressure on the swing arm frame 21) is related to the deformation amount and the deformation filling space of the elastic body. Due to the existence of the plurality of side grooves, during the extrusion process, the deformation amount of the front part is small, the deformation filling space is large, the reaction force is small, the deformation amount of the rear part increases rapidly, the deformation filling space becomes small, and the reaction force increases rapidly. The reaction force curve is nonlinear. Compared with the elastic body without side grooves, the reaction force curve is more reasonable, that is, the influence of the elastic body on the swing arm frame 21 at the middle position of the swing range is smaller, and the pressure on the bearing is not too large.

[0060] Further, as shown in FIGS. 6, 7 and 8, Figure 11 respectively, the force curves of the spring, the smooth cylindrical elastic body without side grooves, and the plum blossom-shaped cylindrical elastic body with side grooves are shown. As shown in FIG. 6, Figure 11 100 is the pressure curve of the spring, 200 is the pressure curve of the smooth cylindrical elastic body, and 300 is the pressure curve of the plum blossom-shaped cylindrical elastic body with side grooves. The force of the spring is linear, and the forces of the smooth cylindrical elastic body and the plum blossom-shaped cylindrical elastic body are nonlinear. The influence of the plum blossom-shaped cylindrical elastic body on the swing arm at the middle position of the swing range is smaller, and the pressure at the maximum compression point is also between those of the first two, which is not too small or too large to cause an excessively large pressure on the bearing.

[0061] In an embodiment, as shown in FIGS. 9 and 10, Figure 1 and Figure 2As shown, the swing motor further comprises a shaft pressing plate 62 and a cover plate 63, the swing arm frame 21 is rotatably installed on the mover placing position 32 through the swing shaft 24 inserted in the shaft hole 39; the shaft pressing plate 62 is installed on the main body support 3 and abuts against the swing shaft 24; the cover plate 63 is installed on the main body support 3, used to press the first leg 132 and the second leg 133 on the stator placing position 31, preventing the legs from shaking and generating noise, and covering the first circular arc groove 37 and the second circular arc groove 38 where the elastic bodies are placed, preventing the elastic bodies from coming out. Understandably, the shaft pressing plate 62 plays a role of pressing the swing shaft 24 in the mover placing position 32, ensuring the stability of the swing arm frame 21 rotating around the swing shaft 24. In addition, the cover plate 63 presses the first leg 132 and the second leg 133 on the stator placing position 31, preventing the legs from shaking, and the cover plate 63 also covers the first circular arc groove 37 and the second circular arc groove 38, ensuring that the first elastic body 4 and the second elastic body 5 will not come out; the cover plate 63 can also be provided with ribs to enhance the strength of the cover plate 63. Further, the role of the cover plate can also be replaced by a protruding body corresponding to the position of the leg and the elastic body in the shell of the applied electric appliance, pressing the leg and blocking the elastic body from coming out.

[0062] In an embodiment, as shown in Figure 1 and Figure 3 As shown, the swing motor further comprises an output lever 64 installed on the swing arm frame 21, and the output lever 64 is provided with a force output part 641. Understandably, the force output part 641 comprises a first arc-shaped convex part and a second arc-shaped convex part provided on opposite sides of the swing arm frame 21, the axis of the first arc-shaped convex part and the circular axis of the second arc-shaped convex part coincide, and the axis of the first arc-shaped convex part is parallel to the swing shaft 24. In an embodiment, the swing arm frame 21 drives the execution component 8 to swing through the output lever 64, and the output lever 64 is designed to be detachable, which prolongs the length of the swing arm frame 21 and facilitates more free design, meeting the swing driving requirements of more forms of execution components 8.

[0063] As shown in Figure 4 The magnetic circuit of the swing motor (the magnetic poles N and S marked in the figure are the end face polarities of the permanent magnet corresponding to the yoke leg):

[0064] The first coil 11 and the second coil 12 drive the swing arm frame 21 to swing around the swing shaft 24 when driven by positive and negative pulses, as shown in Figure 4The conversion between the two magnetic circuits shown in (a) and (b). When the first coil 11 and the second coil 12 are energized, the four permanent magnets will generate the torque of the same rotating direction. If the first permanent magnet 221 and the third permanent magnet 231 generate the same magnetic attraction force to the first magnetic yoke 13 after energization, the second permanent magnet 222 and the fourth permanent magnet 232 generate the same magnetic repulsion force to the first magnetic yoke 13; reverse energization, the first permanent magnet 221 and the third permanent magnet 231 generate the same magnetic repulsion force to the first magnetic yoke 13, and the second permanent magnet 222 and the fourth permanent magnet 232 generate the same magnetic attraction force to the first magnetic yoke 13. That is, during each swing of the swing arm frame 21, the four permanent magnets are actually subjected to the force of swinging in the same direction, and the electromagnetic driving force = F1+F2+F3+F4, F1, F2, F3, F4 are the forces of the first magnetic yoke 13 to the four permanent magnets respectively. This magnetic circuit design makes the driving power of the swing motor correspondingly reduced.

[0065] It is assumed that the end faces of the first permanent magnet 221 and the fourth permanent magnet 232 are N poles, and the end faces of the second permanent magnet 222 and the third permanent magnet 231 are S poles. When the first coil 11 and the second coil 12 are energized, the end face of the first leg 132 is N pole, and the end face of the second leg 133 is S pole, then the N pole of the first leg 132 will generate an attractive force to the S pole of the second permanent magnet 222, and a repulsive force to the N pole of the first permanent magnet 221. Similarly, the S pole of the second leg 133 will generate an attractive force to the N pole of the fourth permanent magnet 232, and a repulsive force to the S pole of the third permanent magnet 231, so that the output bracket completes the first swing, as shown in Figure 4 (a).

[0066] When the current direction in the first coil 11 and the second coil 12 is changed, the end face of the first leg 132 is S pole, and the end face of the second leg 133 is N pole, then the S pole of the first leg 132 will generate a repulsive force to the S pole of the second permanent magnet 222, and an attractive force to the N pole of the first permanent magnet 221. Similarly, the N pole of the second leg 133 will generate a repulsive force to the N pole of the fourth permanent magnet 232, and an attractive force to the S pole of the third permanent magnet 231, so that the swing arm frame 21 completes the second swing, returns to the initial position of the first swing, and completes one reciprocating swing, as shown in Figure 4 (b).

[0067] In summary, the first coil 11 and the second coil 12 are connected to alternating pulses, so that the end face of the first magnetic yoke 13 generates alternating magnetic poles, and the permanent magnets generate attractive torque and repulsive torque, or repulsive torque and attractive torque, to drive the swing arm frame 21 to reciprocate, thereby driving the corresponding mechanical unit to be swung through the swing arm frame 21, and as shown in Figure 4(a) and (b) are two positions where the swing arm frame 21 can be stable, and the swing arm frame 21 will return to these positions without the elastic body blocking, regardless of whether the coil is powered or not. Figure 4 (a) or (b) shown.

[0068] Further explanation, the width of the end face of the permanent magnet can be equal to or slightly smaller than the width of the first leg 132 and the second leg 133, and the permanent magnet yoke is Figure 4 When swinging between the two magnetic circuits (i.e. the legs of the first magnetic yoke 13 are displaced between the corresponding two permanent magnet end faces), the driving current is stable, and if the swing is too large (i.e. the legs of the first magnetic yoke 13 are displaced outside the corresponding two permanent magnets), the current will increase sharply. Therefore, the swing angle of the swing arm frame 21 of the swing motor of the present application is less than or equal to the angle between the center lines of the two permanent magnet end faces corresponding to the first leg 132 (or the second leg 133) of the first magnetic yoke 13 and the intersection with the center of the rotation shaft 24. By Figure 4 (a) and (b) can also be seen that the magnetic flux channel of the permanent magnet yoke 211 is indispensable. The swing amplitude of the permanent magnet is less than or equal to the center distance of the two permanent magnet end faces corresponding to the first leg 132 (or the second leg 133) of the first magnetic yoke 13.

[0069] As Figure 4 shown, it can be understood that the distance from the force output part 641 to the center of the swing shaft 24 (the outer force arm) is much smaller than the distance from the arc end face of the leg of the first magnetic yoke 13 to the center of the swing shaft 24 (the inner force arm), according to the principle of leverage, the output force of the force output part 641 = electromagnetic driving force * (inner force arm / outer force arm); and generally (inner force arm / outer force arm) is greater than 2, so the output lever 64 of the swing motor of the present application has a large output force.

[0070] In an embodiment, as Figure 5 shown, the first permanent magnet group 22 further comprises a fifth permanent magnet 223 mounted on the swing arm frame 21, and the fifth permanent magnet 223 is located between the first permanent magnet 221 and the second permanent magnet 222; the end face polarity of one end of the fifth permanent magnet 223 towards the first permanent magnet 221 is the same as that of the first permanent magnet 221, and the end face polarity of one end of the fifth permanent magnet 223 towards the second permanent magnet 222 is the same as that of the second permanent magnet 222; it can be understood that the first permanent magnet 221, the second permanent magnet 222 and the fifth permanent magnet 223 are arranged opposite to the first leg 132.

[0071] The second permanent magnet group 23 further comprises a sixth permanent magnet 233 mounted on the swing arm frame 21, the sixth permanent magnet 233 being located between the third permanent magnet 231 and the fourth permanent magnet 232; the end face polarity of the sixth permanent magnet 233 towards one end of the third permanent magnet 231 is the same as the end face polarity of the third permanent magnet 231, and the end face polarity of the sixth permanent magnet 233 towards one end of the fourth permanent magnet 232 is the same as the end face polarity of the fourth permanent magnet 232. It can be understood that the third permanent magnet 231, the fourth permanent magnet 232 and the sixth permanent magnet 233 are arranged opposite to the second leg 133.

[0072] It can be understood that in the embodiment, each permanent magnet group is composed of three permanent magnets arranged side by side; in each permanent magnet group, the magnetic polarities of the two side permanent magnets are opposite, the middle permanent magnet is placed transversely, the transverse end face magnetic polarity of the middle permanent magnet is the same as the external end face magnetic polarity of the two side permanent magnets, and the two permanent magnet groups are centrally symmetric; the three permanent magnets are distributed on the same circle with the center of the swing shaft 24. The three permanent magnets arranged in this way, the magnetic force lines will be concentrated in the direction corresponding to the first leg 132 and the second leg 133, so that the electromagnetic force generated when the first coil 11 and the second coil 12 are energized is larger, and the magnetic force lines in the direction of the permanent magnet yoke are reduced, so that the permanent magnet yoke 211 acting as a magnetic flux channel can be thinned, and the mass of the mover mechanism 2 is reduced.

[0073] In the embodiment, each permanent magnet group is composed of three permanent magnets arranged side by side, which can be simplified to the state of two permanent magnets for electromagnetic motion analysis according to the magnetic force line characteristics. Figure 4

[0074] As shown in Figures 6 to 10 Another embodiment of the utility model further provides an electric device, including execution part 8, gear adjustment mechanism 7 and swing motor described above, can understand, execution part 8 includes but is not limited to cutter head, brush etc., so that the electric device includes but is not limited to electric clipper, electric shaver, electric brush etc.

[0075] ​The gear adjusting mechanism 7 comprises a wrench 71, a shaft body 72, a spring needle assembly 73, an output connecting rod 74, a sector 75 provided with a plurality of connected concave-convex tooth grooves 751, and a connecting piece 76 provided with a guide hole 761; the connecting piece 76 is installed on the main body support 3; the sector 75 is arranged on the shaft body 72 and is provided with a convex column body 752; the output connecting rod 74 is slidingly installed in the guide hole 761 and is rotationally connected with the convex column body 752; the spring needle assembly 73 is installed on the connecting piece 76, and a needle head 731 on the spring needle assembly 73 abuts against one of the concave-convex tooth grooves 751; as a preferred embodiment, the sector 75 and the shaft body 72 are integrally formed; it can be understood that the center of the sector 75 is on the axis of the shaft body 72; the wrench 71 is connected to one end of the shaft body 72, and the shaft body 72 can be rotated by the wrench 71, so that the sector 75 is rotated; the needle head 731 is connected with a spring and can be elastically extended and contracted, so that the needle head 731 abuts against one of the concave-convex tooth grooves 751 and can be elastically extended and contracted to be switched to a different connected concave-convex tooth groove 751 when the sector 75 is rotated, so as to realize gear adjustment; the number of the concave-convex tooth grooves 751 corresponds to the number of gears.

[0076] The shaft body 72 is rotationally installed between the main body support 3 and the connecting piece 76; the execution component 8 is slidingly or rotationally arranged outside the main body support 3 and abuts against the output connecting rod 74 and the swing arm support 21; the output connecting rod 74 is used to drive the execution component 8 to move outside the main body support 3. Figure 8 and Figure 9 As shown in the figures, the connecting piece 76 and the main body support 3 are each provided with a semicircular arc groove, and the shaft body 72 is rotationally installed in a circular hole formed by the two semicircular arc grooves; the execution component 8 can be slidingly or rotationally installed outside the main body support 3 by a sliding block, a sliding groove or the like; the execution component 8 is provided with a clamping groove, and the swing arm support 21 or the output lever 64 installed on the swing arm support 21 is inserted into the clamping groove, so that the swing arm support 21 or the output lever 64 installed on the swing arm support 21 is always inserted into the clamping groove no matter how the output connecting rod 74 drives the execution component 8 to move, so that the swing arm support 21 can drive the execution component 8 to reciprocatingly swing.

[0077] Specifically, the user drives the shaft body 72 to rotate through the wrench 71, the shaft body 72 drives the sector body 75 to rotate, the needle head 731 of the elastic clamping needle assembly 73 is in contact with one of the concave-convex tooth grooves 751 of the sector body 75, so that the elastic clamping needle assembly 73 can support the positioning of the shaft body 72, and the elastic clamping needle assembly 73 can emit a clicking sound when rotating in different connected concave-convex tooth grooves 751, thereby improving the user experience of the user rotating the gear adjusting mechanism 7; when the wrench 71 rotates, the sector body 75 follows and drives the output connecting rod 74 to slide in the guide hole 761 through the convex column body 752, and drives the execution component 8 to move forward and backward, so as to adjust the extension length of the execution component 8, and realize gear adjustment. In the utility model, the gear adjustment operation of the electric device is convenient.

[0078] In an embodiment, as shown in Figure 9 The third semicircular arc groove 302 is transversely through the bottom surface of the main body support 3 relative to the reinforcing rib 34. As shown in Figure 8 The third semicircular arc groove 302 can be combined with the fourth semicircular arc groove 762 on the connecting piece 76 to form a circular hole, facilitating the rotation and installation of the shaft body 72. The existence of the third semicircular arc groove 302 can cooperate with various connecting pieces requiring the installation of a rotating shaft, reduce the thickness of the connecting piece, and improve the universality of the swing motor.

[0079] In an embodiment, as shown in Figure 10 The execution component 8 has a spring-connected movable cutter component that can move forward and backward and can be pushed and moved by the output connecting rod 74. The movable cutter component has the clamping groove, and the output rod 64 is inserted into the clamping groove to drive the movable cutter component to swing.

[0080] Further, the main body support 3 can also be designed in an integrated manner with the shell of an applied electric appliance, simplifying the assembly of the electric appliance and being suitable for the manufacturing of large quantities of applied electric appliances.

[0081] Another embodiment of the utility model also provides an assembly method applied to the swing motor, and the assembly method comprises the following steps:

[0082] S100, install the swing shaft 24 in the shaft hole 39, and rotatably install the swing arm frame 21 on the mover placing position 32; it can be understood that, first, install the first permanent magnet 221, the second permanent magnet 222, the third permanent magnet 231 and the fourth permanent magnet 232 on the swing arm frame 21, and install the swing shaft 24 in the stator placing position 31, then rotatably install the swing arm frame 21 on the swing shaft 24, and finally install the pressing shaft plate 62 on the main body support 3.

[0083] S200, install the stator mechanism 1 from the end far away from the mover placing position 32 on the stator placing position 31, due to the magnetic attraction force between the first supporting leg 132 and the first permanent magnet group 22 and the magnetic attraction force between the second supporting leg 133 and the second permanent magnet group 23, the stator mechanism 1 moves towards the mover mechanism 2 until the supporting seat 131 is hung on the positioning protrusion 33; it can be understood that, first, respectively sleeve the first coil 11 and the second coil 12 on the first supporting leg 132 and the second supporting leg 133, then push the stator assembly from the end far away from the mover placing position 32 into the stator placing position 31, the positioning protrusion 33 relatively moves between the first coil 11 and the second coil 12 until the supporting seat 131 is hung on the positioning protrusion 33, at this time, the magnetic attraction force of the first supporting leg 132 to the first permanent magnet group 22 and the magnetic attraction force of the second supporting leg 133 to the second permanent magnet group 23 will not drive the stator mechanism 1 to move towards the mover mechanism 2; that is, the stator mechanism 1 is positioned on the stator placing position 31.

[0084] S300, fix the stator mechanism 1 on the stator placing position 31; it can be understood that, insert the fastener 14 in the first fastening hole 36 and the second fastening hole 1311, so as to fix the stator mechanism 1 on the main body support 3.

[0085] In the utility model, the distance between the positioning protrusion 33 and the mover placing position 32 is controlled, the air gap between the mover mechanism 2 and the stator mechanism 1 is controlled, the air gap size is not affected by the magnetic force, and the consistency of the air gap is ensured; and the swing motor is simple in assembly operation.

[0086] Further, after step S300, it also includes, moving the swing arm frame 21, and respectively installing the first elastic body 4 and the second elastic body 5 in the first circular arc groove 37 and the second circular arc groove 38; and installing the cover plate 63 on the main body support 3.

[0087] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A swing motor characterized by comprising: The swing motor comprises a stator mechanism, a mover mechanism and a main body support; The stator mechanism comprises a first coil, a second coil and a first magnetic yoke; the first magnetic yoke comprises a support base and first and second support legs spacedly connected to the support base; the first magnetic yoke is formed of a magnetic conductive material and has a U-shaped structure; the first coil is sleeved on the first support leg, and the second coil is sleeved on the second support leg; The mover mechanism comprises a swing arm support, a swing shaft, a first permanent magnet group and a second permanent magnet group; the swing arm support is formed of a magnetic conductive material; one end of the swing arm support close to the first magnetic yoke serves as a permanent magnet yoke, and the other end of the swing arm support away from the first magnetic yoke is rotatably installed on the swing shaft; the first permanent magnet group is arranged corresponding to the first support leg, and the second permanent magnet group is arranged corresponding to the second support leg; the first permanent magnet group comprises first and second permanent magnets spacedly installed on the permanent magnet yoke, and the second permanent magnet group comprises third and fourth permanent magnets spacedly installed on the permanent magnet yoke; the end faces of the first and second permanent magnets corresponding to the first support leg have opposite polarities, the end faces of the third and fourth permanent magnets corresponding to the second support leg have opposite polarities, and the end face of the first permanent magnet corresponding to the first support leg has the same polarity as the end face of the fourth permanent magnet corresponding to the second support leg; The main body support is sequentially provided with a stator placement site and a mover placement site; the stator placement site is provided with a positioning protrusion, and the support base is hung on the positioning protrusion; the mover placement site is provided with a shaft hole, the swing shaft is installed in the shaft hole, and the swing arm support is rotatably installed on the mover placement site.

2. The wobble motor according to claim 1, characterized by The swing motor further comprises first and second elastic bodies; the main body support is provided with first and second circular arc grooves; the first and second elastic bodies are installed in the first and second circular arc grooves respectively, and the first and second elastic bodies respectively abut against opposite sides of the swing arm support.

3. The oscillating electric motor according to claim 2, characterized in that The first elastic body comprises a first circular cylinder, and a plurality of first side grooves are circumferentially and spacedly arranged on the sidewall of the first circular cylinder; The second elastic body comprises a second circular cylinder, and a plurality of second side grooves are circumferentially and spacedly arranged on the sidewall of the second circular cylinder.

4. The oscillating electric motor according to claim 2, characterized in that First vertical sidewalls are arranged on both sides of the stator placement site, second vertical sidewalls are arranged on both sides of the mover placement site, one end of the second vertical sidewalls is connected to the first vertical sidewalls, and the other end of the second vertical sidewalls is connected to the groove walls of the first and second circular arc grooves.

5. The oscillating electric motor according to claim 1, characterized in that, The main body support is further provided with a reinforcing rib; the reinforcing rib divides the stator placement site into a first placement site and a second placement site; the first coil is located in the first placement site, and the second coil is located in the second placement site; the positioning protrusion is arranged on the reinforcing rib, and the positioning protrusion is provided with a positioning surface for hanging the support base.

6. The oscillating electric motor according to claim 1, characterized in that The swing motor further comprises a pressing shaft plate and a cover plate; the pressing shaft plate is installed on the main body support and abuts against the swing shaft; the cover plate is installed on the main body support and is used for pressing the first leg and the second leg on the stator placing position.

7. The oscillating electric motor according to claim 1, characterized in that The swing motor further comprises an output lever installed on the swing arm support, and the output lever is provided with a force output part; The force output part comprises a first arc-shaped convex part and a second arc-shaped convex part arranged on opposite sides of the swing arm support, the axis of the first arc-shaped convex part and the circular axis of the second arc-shaped convex part coincide, and the axis of the first arc-shaped convex part is parallel to the swing shaft.

8. The swing motor according to any one of claims 1 to 7, characterized by The first permanent magnet group further comprises a fifth permanent magnet installed on the permanent magnet yoke, and the fifth permanent magnet is located between the first permanent magnet and the second permanent magnet; The end face polarity of the fifth permanent magnet towards the first permanent magnet is the same as the end face polarity of the first permanent magnet, and the end face polarity of the fifth permanent magnet towards the second permanent magnet is the same as the end face polarity of the second permanent magnet; The second permanent magnet group further comprises a sixth permanent magnet installed on the permanent magnet yoke, and the sixth permanent magnet is located between the third permanent magnet and the fourth permanent magnet; The end face polarity of the sixth permanent magnet towards the third permanent magnet is the same as the end face polarity of the third permanent magnet, and the end face polarity of the sixth permanent magnet towards the fourth permanent magnet is the same as the end face polarity of the fourth permanent magnet.

9. The oscillating electric motor according to any one of claims 1 to 7, characterized by The first leg is provided with a first circular arc surface at an end away from the support base, the second leg is provided with a second circular arc surface at an end away from the support base, and the first circular arc surface and the second circular arc surface are both centered on the swing shaft; the first permanent magnet, the second permanent magnet, the third permanent magnet and the fourth permanent magnet are distributed on the same circumference centered on the swing shaft.

10. An electric device, characterized by The swing motor comprises an execution component, a gear adjusting mechanism and a swing motor as claimed in any one of claims 1 to 9; The gear adjusting mechanism comprises a wrench, a shaft body, an elastic pin assembly, an output connecting rod, a fan-shaped body provided with a plurality of concave-convex tooth grooves, and a connecting piece provided with a guide hole; the fan-shaped body is arranged on the shaft body and provided with a convex column body, the output connecting rod is slidingly installed in the guide hole and rotationally connected with the convex column body; the elastic pin assembly is installed on the connecting piece, and a needle head on the elastic pin assembly is in contact with one of the concave-convex tooth grooves; and the connecting piece is installed on the main body support; The shaft body is rotationally installed between the main body support and the connecting piece; the execution component is slidingly or rotationally arranged outside the main body support and in contact with the output connecting rod and the swing arm support; and the output connecting rod is used to drive the execution component to move outside the main body support.

Images