Swing motor

Abstract

The invention belongs to the technical field of motors, and particularly relates to a swing motor, in the swing motor, a stator mechanism comprises a first coil, a second coil and a first magnet yoke, the first magnet yoke comprises a supporting seat, a first supporting foot and a second supporting foot, the first supporting foot and the second supporting foot are connected to the supporting seat in a spaced mode, the first coil is connected to the first supporting foot in a sleeving mode, and the second coil is connected to the second supporting foot in a sleeving mode. The second coil is sleeved on the second support leg; the rotor mechanism comprises two swing assemblies. Each swing assembly comprises an output support, a second magnet yoke, a first permanent magnet, a second permanent magnet, a third permanent magnet and a fourth permanent magnet, wherein the first permanent magnet, the second permanent magnet, the third permanent magnet and the fourth permanent magnet are installed on the second magnet yoke at intervals. The two output supports are provided with a first containing groove and a second containing groove respectively. The rotor mechanism further comprises balls installed in the first containing groove and the second containing groove. According to the swing motor, the sound generated in the working process of the swing motor is small.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a swing motor. Background Art

[0002] A motor is an electromagnetic device that converts electrical energy according to the law of electromagnetic induction. It is widely used in various fields and is an indispensable prime mover in today's society, providing power sources for a large number of electrical appliances or various machines. A swing motor is a motor that can achieve high-frequency swinging. It is widely used in electric shavers, electric brushes and other equipment. Swing motors generally use strong magnetic materials such as neodymium iron boron as permanent magnets. When assembled, they will produce a strong pulling force on the yoke. The applicant has found that the technology also provides a swing motor (application number: 201610095990.0, patent name: swing motor and electric hair clipper). Although this swing motor can reduce the amount of permanent magnets and improve magnetic efficiency, the existing swing motor's yoke is directly fixed to the housing with screws, which has the technical problems of complex assembly process, poor consistency, easy noise generation, and difficult to accurately control the swing amplitude. Summary of the invention

[0003] The embodiment of the present invention provides a swing motor to solve the technical problems of the swing motor in the prior art such as high noise.

[0004] An embodiment of the present invention provides a swing motor, comprising a stator mechanism, a mover mechanism and a housing mechanism; The stator mechanism comprises a first coil, a second coil and a first magnetic yoke, the first magnetic yoke comprises a support base and a first leg and a second leg connected to the support base at intervals, the first coil is sleeved on the first leg, and the second coil is sleeved on the second leg; The mover mechanism includes two swing components, the swing components include an output bracket, a second yoke, and a first permanent magnet, a second permanent magnet, a third permanent magnet, and a fourth permanent magnet installed on the second yoke at intervals, the second yoke is installed on the output bracket, the first permanent magnet and the fourth permanent magnet have the same polarity, the second permanent magnet and the third permanent magnet have the same polarity, and the first permanent magnet and the second permanent magnet have opposite magnetic properties; The stator mechanism is installed in the inner space of the housing mechanism; the first permanent magnet and the second permanent magnet are both arranged opposite to the first leg, the third permanent magnet and the fourth permanent magnet are both arranged opposite to the second leg, and the stator mechanism drives the two swing assemblies to swing in opposite directions; The two output brackets are respectively provided with a first accommodating groove and a second accommodating groove; the mover mechanism also includes balls installed in the first accommodating groove and the second accommodating groove.

[0005] Optionally, the swing motor further includes a supporting spring sheet, a first pressing sheet and a second pressing sheet, one end of the supporting spring sheet is mounted on the output bracket via the first pressing sheet, and the other end of the supporting spring sheet is mounted on the housing mechanism via the second pressing sheet.

[0006] Optionally, a first mounting portion is provided on the output bracket, a second mounting portion is provided on the housing mechanism, one end of the supporting spring is mounted on the first mounting portion through the first pressing sheet, and the other end of the supporting spring is mounted on the second mounting portion through the second pressing sheet; In a direction perpendicular to the supporting elastic sheet, the first pressing sheet is aligned with the first mounting portion, and the second pressing sheet is aligned with the second mounting portion.

[0007] Optionally, a top contact step is further provided on the output bracket, and a bottom contact step is further provided on the shell mechanism, and opposite ends of the supporting spring sheet are respectively low-connected to the top contact step and the bottom contact step.

[0008] Optionally, the shell mechanism includes two shells that are detachably connected, the shells are provided with a first locking portion, the support seat is provided with a second locking portion that is adapted to the first locking portion, and the first locking portion is locked with the second locking portion.

[0009] Optionally, the movable sub-mechanism further comprises a connecting rod and a connecting rod bracket provided with a convex shaft and mounted on the housing mechanism, the connecting rod being provided with an axial hole and a first waist hole and a second waist hole located on opposite sides of the axial hole; the convex shaft is inserted into the axial hole; the two output brackets are respectively provided with a first convex portion and a second convex portion, the first convex portion is slidably inserted in the first waist hole, and the second convex portion is slidably inserted in the second waist hole.

[0010] Optionally, the connecting rod bracket includes a bracket plate, a convex shaft connected to the bracket plate, and a limiting column connected to one end of the convex shaft away from the bracket plate; the bracket plate is installed on the shell mechanism, the convex shaft is inserted into the shaft hole, and the limiting column is inserted into the gap between the two output brackets.

[0011] Optionally, the swing motor further comprises an elastic ring sleeved on the connecting rod.

[0012] Optionally, an output portion is provided at one end of the output bracket away from the second magnetic yoke, and a first supporting wall and a second supporting wall are provided on the housing mechanism. The swing motor also includes a first resonant spring and a second resonant spring; the first resonant spring is installed between the first support wall and the output part, the second resonant spring is installed between the second support wall and the output part, and the first resonant spring and the second resonant spring are respectively abutted against opposite sides of the output part.

[0013] Optionally, the swing motor also includes a first elastomer and a second elastomer installed at intervals on the output bracket; the first elastomer abuts against the shell mechanism to limit the swing amplitude of the swing component along the first direction, and the second elastomer abuts against the shell mechanism to limit the swing amplitude of the swing component along the second direction; the first direction is opposite to the second direction.

[0014] In the present invention, the two output brackets are respectively provided with a first accommodating groove and a second accommodating groove, and the movable mechanism 2 also includes a ball installed in the first accommodating groove and the second accommodating groove; in the process of the movable mechanism driving the two swinging components to swing, the ball rolls in the first accommodating groove and the second accommodating groove, thereby preventing the two output brackets from approaching each other during the swinging process, so that a certain gap is maintained between the two output brackets, so that the two output brackets will not emit a large noise due to the close friction; the ball is in rolling contact with the two output brackets, so that the friction between the ball and the two output brackets is small, thereby extending the service life of the ball; and the noise generated by the ball rolling process is small, thereby ensuring the quietness of the swing motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0016] Figure 1 is a structural schematic diagram of a swing motor provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of the exploded structure of a swing motor provided by an embodiment of the present invention; Figure 3 It is a partial structural schematic diagram of a swing motor provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of a partial exploded structure of a moving subassembly of a swing motor provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of a partial exploded structure of a moving subassembly of a swing motor provided by an embodiment of the present invention; Figure 6 It is a schematic diagram of a partial exploded structure of a swing motor provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of a partial exploded structure of a swing motor provided by an embodiment of the present invention; Figure 8 is a schematic diagram of a swing motor provided by an embodiment of the present invention; Fig. 9 It is a schematic diagram of the exploded structure of a connecting rod and an elastic ring provided in one embodiment of the present invention; Fig.10 It is a schematic structural diagram of a connecting rod bracket provided in one embodiment of the present invention.

[0017] The reference numerals in the specification are as follows: 1. stator mechanism; 11. first coil; 12. second coil; 13. first yoke; 131. support seat; 1311. second clamping portion; 132. first leg; 133. second leg; 2. mover mechanism; 21. swing assembly; 211. output bracket; 2111. first accommodating groove; 2112. first convex portion; 2113. second convex portion; 2114. output portion; 2115. first mounting portion; 2116. top contact step; 212. second yoke; 213. first permanent magnet; 214. second permanent magnet; 215. third permanent magnet; 216. fourth permanent magnet; 22. Connecting rod; 221. Axial hole; 222. First waist hole; 223. Second waist hole; 23. Connecting rod bracket; 231. Bracket plate; 232. Protruding shaft; 233. Limiting column; 24. Ball; 25. Elastic ring; 3. Shell mechanism; 31. Shell; 311. Internal space; 312. First positioning portion; 313. Second mounting portion; 314. First supporting wall; 315. Second supporting wall; 316. Bottom contact step; 4. Support spring; 5. First pressing plate; 6. Second pressing plate; 71. First resonance spring; 72. Second resonance spring; 81. First elastomer; 82. Second elastomer. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a swing motor, comprising a stator mechanism 1, a mover mechanism 2 and a housing mechanism 3; like Figure 3 As shown, the stator mechanism 1 includes a first coil 11, a second coil 12 and a first yoke 13, the first yoke 13 includes a support seat 131 and a first leg 132 and a second leg 133 connected to the support seat 131 at intervals, the first coil 11 is sleeved on the first leg 132, and the second coil 12 is sleeved on the second leg 133; it can be understood that the first coil 11 and the second coil 12 are both composed of a plastic hollow bracket and an enameled wire wound on the hollow bracket; the first yoke 13 is U-shaped, which can be stamped and riveted with silicon steel sheets. Because the magnetic circuit is similar to a square frame and does not need to rotate, the silicon steel sheet can be an oriented silicon steel sheet. The oriented silicon steel sheet has low iron loss and high magnetic induction intensity, which can reduce the amount of copper wire used.

[0022] like Figure 8As shown, the mover mechanism 2 includes two swing components 21, and the swing component 21 includes an output bracket 211, a second yoke 212, and a first permanent magnet 213, a second permanent magnet 214, a third permanent magnet 215 and a fourth permanent magnet 216 installed at intervals on the second yoke 212, the second yoke 212 is installed on the output bracket 211, the first permanent magnet 213 and the fourth permanent magnet 216 have the same polarity, the second permanent magnet 214 and the third permanent magnet 215 have the same polarity, and the first permanent magnet 213 and the second permanent magnet 214 have opposite magnetic properties; it can be understood that the second yoke 212 is a permanent magnet yoke; the output bracket 211 can be made of zinc alloy die-casting or high-strength polymer material injection molding.

[0023] The stator mechanism 1 is installed in the internal space 311 of the shell mechanism 3; the first permanent magnet 213 and the second permanent magnet 214 are both arranged opposite to the first support leg 132, the third permanent magnet 215 and the fourth permanent magnet 216 are both arranged opposite to the second support leg 133, and the stator mechanism 1 drives the two swinging components 21 to swing in opposite directions; it can be understood that the first permanent magnet 213 and the second permanent magnet 214 can be moved alternately above the first support leg 132, and the third permanent magnet 215 and the fourth permanent magnet 216 can be moved alternately above the second support leg 133.

[0024] like Figure 4 and Figure 5 As shown, the two output brackets 211 are respectively provided with a first accommodating groove 2111 and a second accommodating groove (not shown in the figure); the movable mechanism 2 also includes a ball 24 installed in the first accommodating groove 2111 and the second accommodating groove. It can be understood that the first accommodating groove 2111 and the second accommodating groove are both long strip grooves, and the cross-sections of the first accommodating groove 2111 and the second accommodating groove are both arc grooves, matching the spherical surface of the ball; the first accommodating groove 2111, the second accommodating groove and the ball 24 can be provided with one or more. Further explanation, the length of the first accommodating groove 2111 and the second accommodating groove is greater than or equal to the maximum swing amplitude of the swing component 21, so that during the swinging process of the swing component 21, the ball 24 rolls in the first accommodating groove 2111 and the second accommodating groove.

[0025] In the present invention, the two output brackets 211 are respectively provided with a first accommodating groove 2111 and a second accommodating groove, and the movable mechanism 2 also includes a ball 24 installed in the first accommodating groove 2111 and the second accommodating groove; in the process of the movable mechanism 2 driving the two swinging components 21 to swing, the ball 24 rolls in the first accommodating groove 2111 and the second accommodating groove, thereby avoiding the two output brackets 211 from approaching each other during the swinging process, so that a certain gap is maintained between the two output brackets 211, so that the two output brackets 211 will not emit a large noise due to the close friction; the ball 24 is in rolling contact with the two output brackets 211, so that the friction between the ball 24 and the two output brackets 211 is small, thereby extending the service life of the ball 24; and the noise generated by the ball 24 during the rolling process is small, thereby ensuring the quietness of the swing motor.

[0026] The magnetic circuit of the swing motor is described as follows: The first permanent magnet 213 and the second permanent magnet 214 are the first group of permanent magnets, and have two permanent magnet end faces with opposite magnetic polarities, corresponding to the end face of the first leg 132; the third permanent magnet 215 and the fourth permanent magnet 216 are the second group of permanent magnets, and have two permanent magnet end faces with opposite magnetic polarities, corresponding to the end face of the second leg 133; and the first group of permanent magnets and the second group of permanent magnets are centrally symmetrical. Furthermore, the first group of permanent magnets and the second group of permanent magnets can also be composed of multiple permanent magnets of other forms, as long as there are two permanent magnet end faces with opposite magnetic polarities corresponding to the first leg 132 and the second leg 133 of the first magnetic yoke 13.

[0027] Specifically, if Figure 8 As shown, (the magnetic polarities N and S marked in the figure are the end surface polarities of the permanent magnet corresponding to the yoke legs).

[0028] When the first coil 11 and the second coil 12 are driven by positive and negative pulses, the output bracket 211 is driven to swing. Figure 8The conversion between magnetic circuits in. When the first coil 11 and the second coil 12 are energized, the four permanent magnets will generate torques in the same rotation direction. If after power is turned on, the first permanent magnet 213 and the third permanent magnet 215 generate the same magnetic attraction force on the first yoke 13, then the second permanent magnet 214 and the fourth permanent magnet 216 generate the same magnetic repulsion force on the first yoke 13; reverse power is turned on, the first permanent magnet 213 and the third permanent magnet 215 generate the same magnetic repulsion force on the first yoke 13, then the second permanent magnet 214 and the fourth permanent magnet 216 generate the same magnetic attraction force on the first yoke 13. That is, during each swing of the swing component 21, the four permanent magnets are actually subjected to the force of swinging in the same direction, and the output force = F1 + F2 + F3 + F4, F1, F2, F3, F4 are the forces of the first yoke 13 on the four permanent magnets respectively. This magnetic circuit design reduces the driving power of the swing motor accordingly.

[0029] Assume that the end faces of the first permanent magnet 213 and the fourth permanent magnet 216 are N poles, and the end faces of the second permanent magnet 214 and the third permanent magnet 215 are S poles. When the first coil 11 and the second coil 12 are energized, the end face of the first leg 132 is the N pole, and the end face of the second leg 133 is the S pole, then the N pole of the first leg 132 will generate an attractive force on the S pole of the second permanent magnet 214, and a repulsive force on the N pole of the first permanent magnet 213. Similarly, the S pole of the second leg 133 will generate an attractive force on the N pole of the fourth permanent magnet 216, and a repulsive force on the S pole of the third permanent magnet 215, so that the output bracket 211 completes the first swing. When the current direction in the first coil 11 and the second coil 12 changes, the end face of the first leg 132 is the S pole, and the end face of the second leg 133 is the N pole, then the S pole of the first leg 132 will generate a repulsive force on the S pole of the second permanent magnet 214, and generate an attractive force on the N pole of the first permanent magnet 213. Similarly, the N pole of the second leg 133 will generate a repulsive force on the N pole of the fourth permanent magnet 216, and generate an attractive force on the S pole of the third permanent magnet 215, so that the output bracket 211 completes the second swing. In summary, the first coil 11 and the second coil 12 are connected with alternating pulses, so that the end face of the first magnetic yoke 13 produces alternating magnetic poles, so that the permanent magnet produces attractive torque and repulsive torque, or repulsive torque and attractive torque, driving the swing output bracket 211 to swing, thereby driving the corresponding mechanical unit to be swung through the output bracket 211.

[0030] To further illustrate, the width of the permanent magnet end face is equal to or slightly smaller than the width of the first leg 132 and the second leg 133. Figure 8When the two magnetic circuits are swung (i.e., the legs of the first yoke 13 are displaced between the corresponding two permanent magnet end faces), the driving current is stable. If the swing is excessive (i.e., when swinging, the legs of the first yoke 13 are displaced to the outside of the corresponding two permanent magnets), the current will increase sharply. Therefore, the swing amplitude of the swing motor of the present application should be less than or equal to the center distance between the two permanent magnet end faces corresponding to the first leg 132 (or the second leg 133) of the first yoke 13.

[0031] In one embodiment, if Figures 1 to 3 As shown, the swing motor further includes a supporting spring sheet 4, a first pressing sheet 5 and a second pressing sheet 6. One end of the supporting spring sheet 4 is mounted on the output bracket 211 through the first pressing sheet 5, and the other end of the supporting spring sheet 4 is mounted on the housing mechanism 3 through the second pressing sheet 6. It can be understood that both the first pressing sheet 5 and the second pressing sheet 6 can be mounted on the housing 31 by fixing members such as screws and bolts. In this embodiment, the first pressing sheet 5 can press one end of the supporting spring sheet 4 on the output bracket 211, and the second pressing sheet 6 can press the other end of the supporting spring sheet 4 on the housing 31, so that the first pressing sheet 5 makes the supporting spring sheet 4 and the output bracket 211 in surface-to-surface contact, and the second pressing sheet 6 makes the supporting spring sheet 4 and the housing 21 in surface-to-surface contact; the design of the first pressing sheet 5 and the second pressing sheet 6 ensures that the swing assembly 21 will not have a single-sided contact phenomenon during the swing process, avoiding the impact noise caused by the gap change during the swing process of the swing assembly 21, and further reducing the noise generated during the operation of the swing motor.

[0032] In addition, the supporting spring piece 4 can play the role of supporting the movable mechanism 2 on the shell mechanism 3. Since there is a large magnetic attraction between the movable mechanism 2 and the stator mechanism 1, and a certain air gap needs to be maintained between the movable mechanism 2 and the stator mechanism 1 (the permanent magnet is not magnetically attached to the first pin 132 or the second pin 133), the supporting spring piece 4 can ensure the movement of the movable mechanism 2, and when it is installed on the movable mechanism 2 and the stator mechanism 1, the movable mechanism 2 and the stator mechanism 1 will not be magnetically attached together, and the consistency of the air gap spacing between the movable mechanism 2 and the stator mechanism 1 is ensured.

[0033] In one embodiment, if Figures 2 to 4As shown, the output bracket 211 is also provided with a top contact step 2116, the shell mechanism 3 is also provided with a bottom contact step 316, and the opposite ends of the support spring 4 are respectively low-connected to the top contact step 2116 and the contact step. It can be understood that the upper end of the support spring 4 is pressed against the top contact step 2116, the lower end of the support spring 4 is pressed against the bottom contact step 316, and the first pressing sheet 5 is also pressed against the top contact step 2116, and the second pressing sheet 6 is also pressed against the bottom contact step 316; the design of the top contact step 2116 and the bottom contact step 316 can ensure the precise positioning of the swing component 21, and ensure the consistency of the air gap between the permanent magnet and the end face of the support foot, and make assembly more convenient.

[0034] In one embodiment, the upper end of the supporting spring sheet 4 is provided with a first fastening hole and a first convex column and a second convex column located on opposite sides of the first fastening hole; the upper end of the output bracket 211 is provided with a second fastening hole and a first plug hole and a second plug hole located on opposite sides of the second fastening hole, the first fixing member is inserted into the first fixing hole and the second fixing hole, the first convex column is inserted into the first plug hole, and the second convex column is inserted into the second plug hole; A third fastening hole and a third boss and a fourth boss located on opposite sides of the third fastening hole are provided at the lower end of the supporting spring sheet 4; a fourth fastening hole and a third plug hole and a fourth plug hole located on opposite sides of the fourth fastening hole are provided on the shell mechanism 3, the second fixing member is inserted into the third fixing hole and the fourth fixing hole, the third boss is inserted into the third plug hole, and the fourth boss is inserted into the fourth plug hole.

[0035] In one embodiment, if Figure 3As shown, a first mounting portion 2115 is provided on the output bracket 211, a second mounting portion 313 is provided on the shell mechanism 3, one end of the supporting spring sheet 4 is mounted on the first mounting portion 2115 through the first pressing sheet 5, and the other end of the supporting spring sheet 4 is mounted on the second mounting portion 313 through the second pressing sheet 6; in a direction perpendicular to the supporting spring sheet 4, the first pressing sheet 5 is aligned with the first mounting portion 2115, and the second pressing sheet 6 is aligned with the second mounting portion 313 (that is, the projections of the first pressing sheet 5 and the first mounting portion 2115 on the supporting spring sheet 4 overlap, and the projections of the second pressing sheet 6 and the second mounting portion 313 on the supporting spring sheet 4 overlap). In this embodiment, the first pressing plate 5 can make the upper end of the supporting spring sheet 4 pressed against the first mounting portion 2115, and the second pressing plate 6 can make the lower end of the supporting spring sheet 4 pressed against the second mounting portion 313. The upper end of the supporting spring sheet 4 will not contact the first mounting portion 2115 on one side, and the lower end of the supporting spring sheet 4 will not contact the second mounting portion 313 on one side, so as to avoid the noise of hitting the contact surface caused by the change of gap when the supporting spring sheet 4 is deformed during swinging, and further ensure the quietness of the swing motor. In this embodiment, the first pressing plate 5 is aligned with the first mounting portion 2115, and the second pressing plate 6 is aligned with the second mounting portion 313. In one embodiment, if Figure 3 and Figure 5 As shown, the shell mechanism 3 includes two detachably connected shells 31, the shells 31 are provided with a first clamping portion 312, and the support seat 131 is provided with a second clamping portion 1311 adapted to the first clamping portion 312; the stator mechanism 1 is installed in the internal space 311 of the shell mechanism 3, and the first clamping portion 312 is clamped with the second clamping portion 1311. It can be understood that the two shells 31 are centrally symmetrically arranged, so that the two shells 31 can be made of the same set of molds, reducing the manufacturing cost of the shell mechanism 3; the shell 31 can be made of zinc alloy die-casting or high-strength polymer material injection molding. Further explanation, the first clamping portion 312 and the second clamping portion 1311 can be the cooperation of a buckle and a slot, or the cooperation of two buckles.

[0036] In this embodiment, first, the stator mechanism 1 is installed on the shell 31; then, the mover mechanism 2 is inserted into the internal space 311 of the shell 31 from below; and in the process of installing the mover mechanism 2, the magnetic attraction of the stator mechanism 1 on the mover mechanism 2 causes the stator mechanism 1 to move toward the mover mechanism 2 until the first latching portion 312 (which can be a positioning step design) and the second latching portion 1311 (which can be a latching step design) are engaged with each other, and the mutual engagement of the first latching portion 312 and the second latching portion 1311 ensures that there is a certain air gap between the mover mechanism 2 and the stator mechanism 1, thereby improving the convenience of assembling the swing motor and ensuring the consistency of the air gap between the mover mechanism 2 and the stator mechanism 1.

[0037] In one embodiment, if Figure 3 and Figure 5 As shown, the movable mechanism 2 also includes a connecting rod 22 and a connecting rod bracket 23 provided with a convex shaft 232 and installed on the two housings 31, the connecting rod 22 is provided with an axial hole 221 and a first waist hole 222 and a second waist hole 223 located on opposite sides of the axial hole 221; the convex shaft 232 is inserted into the axial hole 221; the two output brackets 211 are respectively provided with a first convex portion 2112 and a second convex portion 2113, the first convex portion 2112 is slidably inserted in the first waist hole 222, and the second convex portion 2113 is slidably inserted in the second waist hole 223. It can be understood that the first waist hole 222 and the second waist hole 223 are symmetrically distributed with the axial hole 221 as the symmetry axis. Specifically, during the swinging process of the two swinging components 21, the connecting rod 22 rotates around the convex shaft 232, and the first convex portion 2112 slides in the first waist hole 222, and the second convex portion 2113 slides in the second waist hole 223. In this embodiment, the connecting rod 22 can limit the swing amplitude of the two swing components 21 .

[0038] To further illustrate, if the ball bearing 24 is not present, and only the connecting rod 22 limits the swinging trajectory of the two output brackets 211, when the output bracket 211 swings to the maximum swing position, the two output brackets 211 are likely to come close to each other due to the pulling force of the connecting rod 22, and the supporting spring piece 4 is likely to be twisted by the pulling force, and abnormal noise is likely to be generated during the twisting process of the supporting spring piece 4; the ball bearing 24 can prevent the two output brackets 211 from coming close to each other from the middle, thereby ensuring that the two output brackets 211 are always not in contact during the swinging process, and ensuring that the supporting spring piece 4 does not twist.

[0039] In the present invention, the ball 24, the two output brackets 211, the connecting rod 22 and the connecting rod bracket 23 together constitute the maximum swing limit of the swing assembly 21, ensuring the consistency of the swing, and ensuring that the spacing between the output brackets 211 remains unchanged during the swing. When the connecting rod 22 swings to the maximum value of its waist-shaped hole, it will pull the swinging output bracket 211 closer. At this time, the ball 24 works to prevent them from getting closer, thereby also preventing the output bracket 211 from swinging to the far end, and can only swing back, thus achieving the maximum swing limit of the swing, and also avoiding the supporting spring sheet 4 from being pulled sideways, and not easy to wear. Therefore, by simply changing the length of the waist-shaped hole, precise control of different swings can be achieved, improving the consistency of the product. And the consistency of the swing is guaranteed, and the spacing between the two output brackets 211 is guaranteed to remain unchanged.

[0040] In one embodiment, if Fig. 9 As shown, the swing motor also includes an elastic collar 25 sleeved on the connecting rod 22. Specifically, when the output bracket 211 swings to a specified swing amplitude, the elastic collar 25 hits the corresponding inner wall of the housing 31, which can prevent the swing amplitude from being too large and the collision noise from being too large, allowing the output bracket 211 to swing within the specified swing amplitude; it can also store energy and release it during reverse swinging to increase the starting torque of reverse swinging. The connecting rod 22 and the elastic collar 25 can be assembled by the combination of a slot and a buckle. For example, a protrusion is set on the connecting rod 22, and a depression is set at the corresponding position of the elastic collar 25; or a depression is set on the connecting rod 22, and a protrusion is set at the corresponding position of the elastic collar 25; or the two are bonded by using a viscose process.

[0041] In one embodiment, if Fig.10 As shown, the connecting rod bracket 23 includes a bracket plate 231, a convex shaft 232 connected to the bracket plate 231, and a limiting column 233 connected to one end of the convex shaft 232 away from the bracket plate 231; the bracket plate 231 is installed on the shell mechanism 3, the convex shaft 232 is inserted into the shaft hole 221, and the limiting column 233 is inserted into the gap between the two output brackets 211 to replace the function of the ball 24; the diameter of the limiting column 233 is the designed gap between the two output brackets 211. It can be understood that two connecting rods 22 and connecting rod brackets 23 are provided, and the steel ball 24 is no longer installed; the limiting column 233 is inserted into the gap between the two output brackets 211, so that the limiting column 233 can also prevent the two output brackets 211 from getting close to each other; especially when the connecting rod 22 swings to the maximum value of its waist-shaped hole, it will pull the swinging output bracket 211 to get close, and the limiting column 233 will prevent the two output brackets 211 from getting close, thereby also preventing the output bracket 211 from swinging to the far end, and can only swing back, thus achieving the maximum swing amplitude limit of the swing. However, because the limiting column 233 does not roll, it is easy to generate friction heat and wear, and can be used in applications where the service life requirement is not high.

[0042] In one embodiment, if Figure 1 and Figure 2 As shown, the output bracket 211 has an output portion 2114 at one end away from the second yoke 212, and the housing mechanism 3 has a first support wall 314 and a second support wall 315 spaced apart from each other; understandably, the output portion 2114 has a shaft mounting hole for mounting the output shaft.

[0043] The swing motor further includes a first resonant spring 71 and a second resonant spring 72; the first resonant spring 71 is installed between the first support wall 314 and the output part 2114, the second resonant spring 72 is installed between the second support wall 315 and the output part 2114, and the first resonant spring 71 and the second resonant spring 72 are respectively abutted against opposite sides of the output part 2114; preferably, the first resonant spring 71 and the second resonant spring 72 are symmetrically arranged. It can be understood that the first resonant spring 71 and the second resonant spring 72 are both in a compressed state. In this embodiment, the first resonant spring 71 and the second resonant spring 72 have a fixed resonant frequency. When the electromagnetic drive pulse frequency is close to and equal to the natural frequency of the first resonant spring 71 and the second resonant spring 72, the first resonant spring 71 and the second resonant spring 72 will resonate, the swing amplitude will increase, the required driving torque will decrease, and the output torque will increase.

[0044] In one embodiment, if Figure 3 and Figure 4 As shown, the first and second positioning convex parts are respectively provided on opposite sides of the output part 2114, the third positioning convex part is provided on the first support wall 314, and the fourth positioning convex part is provided on the second support wall 315; the first and third positioning convex parts are respectively plugged into the opposite ends of the inner hole of the first resonance spring 71, and the second and fourth positioning convex parts are respectively plugged into the opposite ends of the inner hole of the second resonance spring 72. In this embodiment, the first and third positioning convex parts can play a role in supporting the first resonance spring 71, and the second and fourth positioning convex parts can play a role in supporting the second resonance spring 72, thereby ensuring the stability of the installation of the first and second resonance springs 71 and 72. It can be understood that since the two shells 31 are centrally symmetrically arranged, there are four resonance springs.

[0045] Further, below the support wall on the shell 31, a resonance spring position reinforcing rib may be provided on the shell 31 below the support wall to strengthen the support wall of the resonance spring so that the deformation of the support wall when subjected to the pressure of the resonance spring is reduced.

[0046] In one embodiment, if Figure 3As shown, the swing motor further includes a first elastic body 81 and a second elastic body 82 installed at intervals on the output bracket 211; the first elastic body 81 abuts against the housing mechanism 3 to limit the swing amplitude of the swing assembly 21 along a first direction, and the second elastic body 82 abuts against the housing mechanism 3 to limit the swing amplitude of the swing assembly 21 along a second direction; the first direction is opposite to the second direction. It can be understood that the first elastic body 81 and the second elastic body 82 both include but are not limited to silicone bodies, etc.; the first elastic body 81 and the second elastic body 82 are installed at intervals on both output brackets 211.

[0047] Specifically, when the swing assembly 21 swings to the extreme position along the first direction, the first elastic body 81 abuts against the inner wall of the housing 31, so that the first elastic body 81 abutting against the housing 31 can limit the swing amplitude of the swing assembly 21 along the first direction; when the swing assembly 21 swings to the extreme position along the second direction, the second elastic body 82 abuts against the inner wall of the housing 31, so that the second elastic body 82 abutting against the housing 31 can limit the swing amplitude of the swing assembly 21 along the second direction. In this embodiment, the design of the first elastic body 81 and the second elastic body 82 can limit the swing amplitude of the swing assembly 21.

[0048] Another embodiment of the present invention further provides an assembly method, which is applied to the above-mentioned swing motor, comprising: S100, install the first permanent magnet 213, the second permanent magnet 214, the third permanent magnet 215 and the fourth permanent magnet 216 on the second yoke 212, and install the second yoke 212 on the output bracket 211 to form two swing components 21; and the polarities of the two permanent magnets corresponding to the two swing components 21 are opposite; it can be understood that the polarities of the first permanent magnet 213 of the two swing components 21 are opposite, the polarities of the second permanent magnet 214 of the two swing components 21 are opposite, the polarities of the third permanent magnet 215 of the two swing components 21 are opposite, and the polarities of the third permanent magnet 215 of the two swing components 21 are opposite.

[0049] S200, connecting the supporting spring piece 4 to the output bracket 211 of the two swinging assemblies 21; it can be understood that there are four supporting spring pieces 4, and one supporting spring piece 4 is connected to the left and right sides of the output bracket 211.

[0050] S300, connect the ends of the two supporting springs 4 away from the output bracket 211 to the shell 31 respectively; it can be understood that there are four supporting springs 4, and the left and right sides of the output bracket 211 are connected to the shell 31 through one supporting spring 4; the supporting spring 4 has a supporting force on the actuator mechanism 2.

[0051] S400, the mover mechanism 2 is installed in the internal space 311, and the first clamping portion 312 is clamped with the second clamping portion 1311. It can be understood that during the assembly process of the mover mechanism 2 and the stator mechanism 1, the magnetic attraction of the mover mechanism 2 on the stator mechanism 1 causes the first clamping portion 312 and the second clamping portion 1311 to be clamped with each other, so that there is a certain air gap between the mover mechanism 2 and the stator mechanism 1, which improves the convenience of assembling the swing motor.

[0052] In one embodiment, if Figure 7 As shown, the step of installing the mover mechanism 2 in the internal space 311 and engaging the first locking portion 312 with the second locking portion 1311 (ie, step S400) includes: The first coil 11 and the second coil 12 are respectively sleeved on the first leg 132 and the second leg 133 to form the stator mechanism 1; The stator mechanism 1 is inserted into the internal space 311 from the end away from the mover mechanism 2 , and the first clamping portion 312 is clamped with the second clamping portion 1311 .

[0053] In this embodiment, the first coil 11 and the second coil 12 are first installed on the first magnetic yoke 13, and then the stator mechanism 1 is inserted into the internal space 311 from the bottom. During the installation of the stator mechanism 1, the first locking portion 312 will be engaged with the second locking portion 1311. The mutually engaged first locking portion 312 and the second locking portion 1311 will prevent the stator mechanism 1 from moving further toward the movable mechanism 2, thereby ensuring a certain air gap between the movable mechanism 2 and the stator mechanism 1.

[0054] The whole machine installation method of the swing motor is as follows: install the first permanent magnet 213, the second permanent magnet 214, the third permanent magnet 215 and the fourth permanent magnet 216 on the second yoke 212, and install the second yoke 212 on the output bracket 211 to form two swing components 21; and the polarities of the two permanent magnets corresponding to the two swing components 21 are opposite; connect the supporting spring pieces 4 to the output brackets 211 of the two swing components 21; connect the ends of the two supporting spring pieces 4 away from the output bracket 211 to the shell 31 respectively; after applying lubricating grease on the inner walls of the first accommodating groove 2111 and the second accommodating groove, install the ball 24 in the first accommodating groove 2111; respectively sleeve the first coil 11 and the second coil 12 on the first leg 13 2 and the second support leg 133 to form the stator mechanism 1; the stator mechanism 1 is inserted into the internal space 311 from the end away from the mover mechanism 2, and the first clamping portion 312 is clamped with the second clamping portion 1311; the two shells 31 are buckled (the ball 24 is naturally located between the first accommodating groove 2111 and the second accommodating groove); after the first protrusion 2112 is inserted into the first waist hole 222 and the second protrusion 2113 is inserted into the second waist hole 223, the connecting rod bracket 23 is installed on the shell 31, and the protruding shaft 232 is inserted into the shaft hole 221; the first resonance spring 71 is installed between the first support wall 314 and the output portion 2114, and the second resonance spring 72 is installed between the second support wall 315 and the output portion 2114.

[0055] In another embodiment, if Figure 6 As shown, the step of installing the mover mechanism 2 in the internal space 311 and engaging the first locking portion 312 with the second locking portion 1311 (ie, step S400) includes: Installing the first coil 11 and the second coil 12 in the internal space 311; The first magnetic yoke 13 is inserted into the first coil 11 and the second coil 12 from the end away from the movable mechanism 2, and the first clamping portion 312 is clamped with the second clamping portion 1311. In this embodiment, the first coil 11 and the second coil 12 are first installed in the internal space 311 of the housing 31 mechanism, and then the first magnetic yoke 13 is inserted into the first coil 11 and the second coil 12 from the bottom, and during the insertion of the first magnetic yoke 13, the first clamping portion 312 will be clamped with the second clamping portion 1311, and the mutually clamped first clamping portion 312 and the second clamping portion 1311 will prevent the first magnetic yoke 13 from moving further toward the movable mechanism 2, thereby ensuring a certain air gap between the movable mechanism 2 and the stator mechanism 1. The whole machine installation method of the swing motor is as follows: the first permanent magnet 213, the second permanent magnet 214, the third permanent magnet 215 and the fourth permanent magnet 216 are installed on the second yoke 212, and the second yoke 212 is installed on the output bracket 211 to form two swing components 21; and the polarities of the two permanent magnets corresponding to the two swing components 21 are opposite; the supporting spring piece 4 is connected to the output bracket 211 of the two swing components 21; the end of the supporting spring piece 4 away from the output bracket 211 is respectively connected to the two shells 31; after applying lubricating grease on the inner walls of the first accommodating groove 2111 and the second accommodating groove, the ball 24 is installed in the first accommodating groove 2111; the first coil 11 and the second coil 12 are both installed in the internal space 311; the two shells 31 are buckled (the ball 24 is naturally in the first accommodating groove 2111); The first convex portion 2112 is inserted into the first waist hole 222, and the second convex portion 2113 is inserted into the second waist hole 223, and then the connecting rod bracket 23 is installed on the shell 31, and the convex shaft 232 is inserted into the shaft hole 221; the first resonance spring 71 is installed between the first support wall 314 and the output part 2114, and the second resonance spring 72 is installed between the second support wall 315 and the output part 2114; against the first coil 11 and the second coil 12, the first yoke 13 is inserted from the bottom of the shell 31 onto the first coil 11 and the second coil 12, and the first leg 132 is inserted into the inner hole of the first coil 11, and the second leg 133 is inserted into the inner hole of the second coil 12, so that the second clamping portion 1311 is clamped with the first clamping portion 312.

[0056] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A swing motor, characterized in that: It includes a stator mechanism, a mover mechanism and a shell mechanism; The stator mechanism comprises a first coil, a second coil and a first magnetic yoke, the first magnetic yoke comprises a support base and a first leg and a second leg connected to the support base at intervals, the first coil is sleeved on the first leg, and the second coil is sleeved on the second leg; The mover mechanism includes two swing components, the swing components include an output bracket, a second yoke, and a first permanent magnet, a second permanent magnet, a third permanent magnet, and a fourth permanent magnet installed on the second yoke at intervals, the second yoke is installed on the output bracket, the first permanent magnet and the fourth permanent magnet have the same polarity, the second permanent magnet and the third permanent magnet have the same polarity, and the first permanent magnet and the second permanent magnet have opposite magnetic properties; The stator mechanism is installed in the inner space of the housing mechanism; the first permanent magnet and the second permanent magnet are both arranged opposite to the first leg, the third permanent magnet and the fourth permanent magnet are both arranged opposite to the second leg, and the stator mechanism drives the two swing assemblies to swing in opposite directions; The two output brackets are respectively provided with a first accommodating groove and a second accommodating groove; the mover mechanism also includes balls installed in the first accommodating groove and the second accommodating groove.

2. The swing motor according to claim 1, characterized in that: The swing motor further comprises a supporting spring sheet, a first pressing sheet and a second pressing sheet, one end of the supporting spring sheet is mounted on the output bracket via the first pressing sheet, and the other end of the supporting spring sheet is mounted on the housing mechanism via the second pressing sheet.

3. The swing motor according to claim 2, characterized in that: The output bracket is provided with a first mounting portion, the housing mechanism is provided with a second mounting portion, one end of the supporting spring is mounted on the first mounting portion through the first pressing sheet, and the other end of the supporting spring is mounted on the second mounting portion through the second pressing sheet; In a direction perpendicular to the supporting elastic sheet, the first pressing sheet is aligned with the first mounting portion, and the second pressing sheet is aligned with the second mounting portion.

4. The swing motor according to claim 2, characterized in that: The output bracket is also provided with a top contact step, and the shell mechanism is also provided with a bottom contact step. The opposite ends of the supporting elastic sheet are respectively low-connected to the top contact step and the bottom contact step.

5. The swing motor according to claim 1, characterized in that: The housing mechanism comprises two detachably connected housings, the housings are provided with a first clamping portion, the support seat is provided with a second clamping portion adapted to the first clamping portion, and the first clamping portion is clamped with the second clamping portion.

6. The swing motor according to claim 1, characterized in that: The movable mechanism also includes a connecting rod and a connecting rod bracket provided with a convex shaft and installed on the shell mechanism, the connecting rod is provided with an axial hole and a first waist hole and a second waist hole located on opposite sides of the axial hole; the convex shaft is inserted into the axial hole; the two output brackets are respectively provided with a first convex portion and a second convex portion, the first convex portion is slidably inserted in the first waist hole, and the second convex portion is slidably inserted in the second waist hole.

7. The swing motor according to claim 6, characterized in that: The connecting rod bracket includes a bracket plate, a convex shaft connected to the bracket plate, and a limiting column connected to one end of the convex shaft away from the bracket plate; the bracket plate is installed on the shell mechanism, the convex shaft is inserted into the shaft hole, and the limiting column is inserted into the gap between the two output brackets.

8. The swing motor according to claim 6, characterized in that: The swing motor also includes an elastic ring sleeved on the connecting rod.

9. The swing motor according to claim 1, characterized in that: An output portion is provided at one end of the output bracket away from the second magnetic yoke, and a first supporting wall and a second supporting wall are provided on the housing mechanism. The swing motor also includes a first resonant spring and a second resonant spring; the first resonant spring is installed between the first support wall and the output part, the second resonant spring is installed between the second support wall and the output part, and the first resonant spring and the second resonant spring are respectively abutted against opposite sides of the output part.

10. The swing motor according to claim 1, characterized in that: The swing motor also includes a first elastomer and a second elastomer installed at intervals on the output bracket; the first elastomer abuts against the shell mechanism to limit the swing amplitude of the swing component along a first direction, and the second elastomer abuts against the shell mechanism to limit the swing amplitude of the swing component along a second direction; the first direction is opposite to the second direction.

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