actuator

Abstract

The utility model provides an actuator, including motor, motor includes stator subassembly and rotatable stator subassembly of opposite rotor subassembly, stator subassembly includes shell and magnet, rotor subassembly includes core, pivot and coil winding, core is set in pivot, magnet and core are all accommodated in the shell, coil winding is formed by the electromagnetic wire winding on the core, the diameter of electromagnetic wire is 0.04mm 0.09mm, the number of turns of coil winding is 250 700 turns, the material of magnet is ferrite magnet. In the actuator, the diameter of electromagnetic wire of coil winding is small, the number of turns of coil winding is less, the material of magnet adopts ferrite magnet, thereby in reducing the production cost of actuator, can keep the performance with conventional actuator is equivalent, makes this actuator have better market competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic technology of electric motors, and in particular to an actuator. Background Technology

[0002] An actuator is a device that converts input electrical energy into mechanical motion. As a core component of a control system, actuators function to drive mechanical parts, transmit energy, and regulate operations. They are commonly found in automated control systems such as industrial equipment and robot joint drives. With the increasingly widespread application of automation control, the demand for actuators is also increasing. For example, new energy vehicles require a large number of HVAC system actuators.

[0003] To adapt to market demands, the market has put forward requirements for actuators such as low cost and low noise. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an actuator with low cost and good performance.

[0005] This utility model provides an actuator, including a motor. The motor includes a stator assembly and a rotor assembly rotatably disposed relative to the stator assembly. The stator assembly includes a housing and a magnet. The rotor assembly includes an iron core, a rotating shaft, and a coil winding. The iron core is sleeved on the rotating shaft. The magnet and the iron core are both housed within the housing. The coil winding is formed by winding an electromagnetic wire around the iron core. The diameter of the electromagnetic wire is 0.04mm-0.09mm, and the number of turns of the coil winding is 250-700. The magnet is made of ferrite magnet.

[0006] The actuator may present one or more of the following features individually or in combination.

[0007] Optionally, the outer diameter of the laminated sheets of the iron core is 16.5mm-18mm.

[0008] Optionally, the width of the spokes of the laminated sheets of the iron core is 3mm-5mm.

[0009] Optionally, the diameter of the electromagnetic wire is 0.07 mm.

[0010] Optionally, the number of turns in the coil winding is 540.

[0011] Optionally, the outer diameter of the laminated sheets of the iron core is 17.2 mm.

[0012] Optionally, the width of the spokes of the laminated sheets of the iron core is 4.0 mm.

[0013] Optionally, the stator assembly includes two magnets arranged circumferentially on the housing.

[0014] Optionally, the two magnets are arranged symmetrically about the axis of rotation, and the cross-section of each magnet is arc-shaped.

[0015] Optionally, the first end of the housing is provided with a base plate, and the second end opposite to the first end is open to form an opening. The stator assembly also includes an end cap provided at the opening, and the two ends of the rotating shaft extend out of the housing through the base plate and the end cap respectively; or, the actuator also includes a housing and a transmission mechanism, the motor and the transmission mechanism are both provided in the housing, and the rotating shaft of the motor is tractively connected to the transmission mechanism.

[0016] In the actuator provided by this utility model, the diameter of the electromagnetic wire of the coil winding is small, the number of turns of the coil winding is small, and the magnet material is ferrite magnet. In this way, while reducing the production cost of the actuator, it can maintain the same performance as conventional actuators (such as the output torque), making the actuator more competitive in the market. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the motor of the actuator according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 Another three-dimensional schematic diagram of the motor shown.

[0020] Figure 3 for Figure 1 The diagram shows an exploded view of the motor at one angle.

[0021] Figure 4 for Figure 1 The diagram shows another exploded view of the motor.

[0022] Figure 5 for Figure 1 The diagram shows an exploded view of one angle of the motor.

[0023] Figure 6 for Figure 1 The diagram shows an exploded view of the motor from another angle.

[0024] Figure 7 for Figure 1 The diagram shows a planar structural schematic of the motor's housing, core, and magnet.

[0025] Figure 8 for Figure 1 The diagram shows the structure of the magnet in the motor.

[0026] Figure 9 This is a perspective view of the actuator according to an embodiment of the present utility model.

[0027] Figure 10 for Figure 9 The diagram shows a three-dimensional view of the actuator removing the second housing.

[0028] Figure 11 This is a schematic diagram comparing the performance of the actuator in this embodiment with that of a conventional actuator. Detailed Implementation

[0029] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0030] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0031] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar attributes, not to indicate or imply relative importance or a specific order.

[0033] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0034] Please refer to Figures 1 to 6 The actuator provided in the first embodiment of this utility model includes a motor 1, which includes a stator assembly 10 and a rotor assembly 30 rotatably disposed relative to the stator assembly 10. The stator assembly 10 includes a housing 11 and a magnet 13. The rotor assembly 30 includes an iron core 31, a shaft 33, and a coil winding (not shown), with the iron core 31 sleeved on the shaft 33. Both the magnet 13 and the iron core 31 are housed within the housing 11. The coil winding is formed by winding electromagnetic wire around the iron core 31, and the diameter of the electromagnetic wire is 0.04-0.09 mm, and the number of turns in the coil winding is 250-700. The material of the magnet 13 can be a ferrite magnet. In this embodiment, the diameter of the electromagnetic wire in the coil winding of the actuator is small, the number of turns in the coil winding is small, and the material of the magnet is a ferrite magnet. This reduces the production cost of the actuator while maintaining performance comparable to conventional actuators (e.g., output torque), making the actuator more competitive in the market. For example, compared to conventional actuators, the actuator in this embodiment reduces the diameter of the electromagnetic wire to 0.04-0.09 mm and the number of turns in the coil winding to 250-700 turns, reducing the weight of the coil winding and the amount of electromagnetic wire used, thereby lowering the cost of the actuator. Specifically, the diameter of the electromagnetic wire is preferably 0.07 mm, and the number of turns in the coil winding is preferably 540 turns.

[0035] In this embodiment, the stator assembly includes two magnets 13 arranged circumferentially around the housing 11. Specifically, the cross-sections of the two magnets 13 are generally arc-shaped. Please refer to... Figure 7 Specifically, in this embodiment, the two magnets 13 are symmetrically arranged about the rotation axis 33. It can be understood that the number of magnets 13 can also be more than two. Specifically, the magnets 13 can be bonded to the inner surface of the outer casing 11 with magnetic adhesive.

[0036] Specifically, the motor in this embodiment weighs 2.225g. This is a reduction of 2.975g compared to the 5.2g weight of a conventional actuator motor.

[0037] Specifically, please refer to Figure 8 The radial dimension (i.e., thickness) of the middle part of magnet 13 is greater than the radial dimension of both ends, that is, the radius of the outer arc is greater than the radius of the inner arc.

[0038] Specifically, the outer casing 11 can be cylindrical. It is understood that the outer casing 11 can also be a cylindrical body with a rectangular or other shapes in cross-section. Specifically in this embodiment, the first end of the outer casing 11 is provided with a base plate 111, and the second end opposite to the first end is open to form an opening. The stator assembly 10 also includes an end cap 15 provided at the opening. The two ends of the rotating shaft 33 pass through the base plate 111 and the end cap 15 respectively and extend out of the outer casing 11.

[0039] Specifically, the opening edge of the outer casing 11 is provided with a buckle 113 extending toward the inside of the outer casing 11, and the buckle 113 is fastened to the edge of the end cap 15. Specifically, a plurality of buckles 113 are evenly distributed circumferentially at the periphery of the opening of the outer casing 11.

[0040] In this embodiment, the iron core 31 of the rotor assembly 30 is formed by stacking multiple layers of laminations. Specifically, the multiple metal laminations are stacked along the rotation axis L1 direction of the actuator rotor assembly 30 (i.e., the extension direction of the shaft 33), and adjacent laminations can be bonded together, with insulating material between adjacent laminations.

[0041] Specifically, the outer diameter L3 of the laminated plates of the iron core 31 is 16.5mm-18mm; preferably, the outer diameter L3 of the laminated plates of the iron core 31 is 17.2mm. This is larger than the 15.85mm outer diameter of the laminated plates of the iron core of conventional actuators.

[0042] Specifically, the width L4 of the spokes of the laminated plates of the iron core 31 is 3mm-5mm; preferably, it is 4.0mm. This is larger than the 2.3mm spokes of the laminated plates of conventional actuators. The spokes are strip-shaped support structures connecting the hub and rim of the iron core 31. Typically, electromagnetic wires can be wound around the spokes to form a coil winding.

[0043] Specifically, the iron core 31 and the magnet 13 are arranged correspondingly in the direction of the rotation axis L1 of the rotor assembly 30, and the magnet 13 covers the outside of the iron core 31.

[0044] In this embodiment, the motor 1 further includes a terminal block 17 and a terminal, spring, and damper assembly 19. The terminal block 17 is fixedly connected to the end cover 15. The terminal, spring, and damper assembly 19 is mounted on the terminal block 17. The terminal 191 of the terminal, spring, and damper assembly 19 extends through the terminal block 17 and the end cover 15 to the outer casing 11. The terminal 191 is electrically connected to the brush 21, and the brush 21 is electrically connected to the coil winding through the commutator 23. In this way, an external power supply can be electrically connected to the coil winding through the terminal 191, brush 21, and commutator 23 to energize the coil winding. After the coil winding is energized, it can generate electromagnetic torque under the action of the magnet 13, thereby driving the rotor assembly 30 to rotate, that is, realizing the three-step conversion of "electrical energy → electromagnetic torque → mechanical motion", realizing the direct conversion of input electrical energy into rotational mechanical motion.

[0045] Specifically, the brush 21 is mounted on the terminal block 17, and the commutator 23 can be mounted on the rotating shaft 33. Through the brush 21 and the commutator 23, the direction of the coil winding current can be changed periodically to ensure that the torque direction is constant.

[0046] Specifically, the edge of the end cap 15 is provided with a first slot 153, a second slot 154, and a slot hole 155. The terminal block 17 facing the end cap 15 is provided with a first locking block 171, a second locking block 172, and a locking pin 173. The first locking block 171 is used to engage with the first slot 153, the second locking block 172 is used to engage with the second slot 154, and the locking pin 173 is inserted into the slot hole 155. Thus, the terminal block 17 is fixed relative to the end cap 15.

[0047] The terminal block 17 is also provided with a protrusion 175, the protrusion 175 is provided with a slot 176, the end cover 15 is provided with a seat hole 157, the protrusion 175 is inserted into the seat hole 157, the terminal 191 is inserted into the slot 176 and extends out of the outer casing 11 from the slot 176.

[0048] In this embodiment, the motor 1 further includes a first bearing 61 and a second bearing 62, which are spaced apart and sleeved on the rotating shaft 33. Both the first bearing 61 and the second bearing 62 are supported between the rotating shaft 33 and the stator assembly 10. In the direction of the rotation axis L1, the iron core 31 is located between the first bearing 61 and the second bearing 62. Specifically, the inner rings of the first bearing 61 and the second bearing 62 are non-rotatably sleeved on the rotating shaft 33, the outer shell 11 is non-rotatably sleeved on the outer ring of the first bearing 61, and the end cap 15 is non-rotatably sleeved on the outer ring of the second bearing 62. More specifically, a first flange portion 151 protrudes from one side of the end cap 15 and is non-rotatably sleeved on the outer ring of the second bearing 62; a second flange portion 115 protrudes from one side of the bottom plate 111 of the outer shell 11 and is non-rotatably sleeved on the outer ring of the first bearing 61.

[0049] Specifically, the first bearing 61 and the second bearing 62 can be made of iron. Bearings made of iron have better wear resistance and can reduce actuator noise, thus meeting the low noise requirements in fields such as new energy vehicles. The first bearing 61 and the second bearing 62 can be sintered.

[0050] In this embodiment, the motor 1 also includes a varistor 64, which can be sleeved on the rotating shaft 33. The varistor 64 is used to absorb the reverse induced overvoltage generated when the coil winding is de-energized, protecting the internal circuitry and switching devices of the actuator from being damaged.

[0051] In this embodiment, the motor 1 also includes an oil slinger ring 66, which can be sleeved on the outside of the rotating shaft 33. The oil slinger ring 66 is used to throw splashed or leaked oil towards the housing wall using centrifugal force when the rotor assembly 30 is running at high speed, allowing it to flow back to the oil sump or lubrication channel, preventing oil from entering non-lubricated areas (such as the motor interior or brake surface), and simultaneously providing sealing, dust prevention, cooling, and maintaining the cleanliness of the lubricating oil. Specifically, in the direction of the rotation axis L1, the oil slinger ring 66 and the varistor 64 are located between the iron core 31 and the second bearing 62. More specifically, the oil slinger ring 66 is sleeved on the outside of the commutator 23 sleeved on the rotating shaft 33.

[0052] In this embodiment, the motor 1 may further include a washer 67 and a spacer 68 sleeved on the rotating shaft 33. In the direction of the rotation axis L1, the washer 67 and the spacer 68 are disposed between the iron core 31 and the first bearing 61.

[0053] In this embodiment, please refer to Figure 9 and Figure 10 The actuator also includes a housing 2 and a transmission mechanism 3. The motor 1 and the transmission mechanism 3 are both located inside the housing 2, and the rotating shaft 33 of the motor 1 is connected to the transmission mechanism 3.

[0054] Specifically, the housing 2 includes a first housing 201 and a second housing 202, which are interlocked to form a space for accommodating the motor 1 and the transmission mechanism 3.

[0055] Specifically, in this embodiment, the transmission mechanism 3 may include a worm 301, a worm wheel 302, and multiple gears 303 mounted on a rotating shaft 33. The worm 301 is driven to rotate by the rotating shaft 33, the worm wheel 302 meshes with the worm 301, and one of the gears 303 is coaxially arranged with the worm wheel 302. Finally, the rotation of the rotating shaft 33 is output through the transmission connection of the multiple gears 303. It is understood that the transmission mechanism 3 may be other mechanisms capable of transmitting mechanical motion, and no limitation is made here.

[0056] Compared to motors in conventional actuators, the cost of this embodiment is reduced. Please refer to... Figure 11The actuator of this embodiment has performance that is substantially equivalent to that of a conventional actuator. It can be seen that, compared to a conventional actuator, the magnet in this embodiment uses a ferrite magnet, and the diameter of the electromagnetic wire in the coil winding is reduced to 0.07 mm, and the number of turns is reduced to 540 turns. This reduces the production cost of the actuator while maintaining performance (e.g., output torque) comparable to a conventional actuator, making the actuator more competitive in the market.

[0057] The actuator in this embodiment can be applied to the heating, ventilation and air conditioning system of new energy vehicles, and of course it can also be applied to other automated control systems, without limitation.

[0058] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. An actuator, characterized in that, The device includes a motor (1), which includes a stator assembly (10) and a rotor assembly (30) rotatably disposed relative to the stator assembly (10). The stator assembly (10) includes a housing (11) and a magnet (13). The rotor assembly (30) includes an iron core (31), a shaft (33), and a coil winding. The iron core (31) is sleeved on the shaft (33). The magnet (13) and the iron core (31) are both housed in the housing (11). The coil winding is formed by winding an electromagnetic wire around the iron core (31). The diameter of the electromagnetic wire is 0.04mm-0.09mm, and the number of turns of the coil winding is 250-700. The material of the magnet (13) is a ferrite magnet.

2. The actuator as described in claim 1, characterized in that, The outer diameter (L3) of the laminated sheets of the iron core (31) is 16.5mm-18mm.

3. The actuator as described in claim 1, characterized in that, The width (L4) of the spokes of the laminated sheets of the iron core (31) is 3mm-5mm.

4. The actuator as described in claim 1, characterized in that, The diameter of the electromagnetic wire is 0.07 mm.

5. The actuator as claimed in claim 1, characterized in that, The coil winding has 540 turns.

6. The actuator as described in claim 2, characterized in that, The outer diameter (L3) of the laminated sheets of the iron core (31) is 17.2 mm.

7. The actuator as described in claim 3, characterized in that, The width (L4) of the spokes of the laminated sheets of the iron core (31) is 4.0 mm.

8. The actuator as claimed in claim 1, characterized in that, The stator assembly includes two magnets (13) arranged circumferentially on the housing (11).

9. The actuator as claimed in claim 8, characterized in that, The two magnets (13) are symmetrically arranged about the axis of rotation (33), and the cross-section of each magnet (13) is arc-shaped.

10. The actuator as claimed in claim 1, characterized in that, The first end of the housing (11) is provided with a base plate (111), and the second end opposite to the first end is open to form an opening. The stator assembly (10) also includes an end cap (15) provided at the opening. The two ends of the rotating shaft (33) pass through the base plate (111) and the end cap (15) respectively and extend out of the housing (11). Alternatively, the actuator also includes a housing (2) and a transmission mechanism (3). The motor (1) and the transmission mechanism (3) are both provided in the housing (2). The rotating shaft (33) of the motor (1) is drivenly connected to the transmission mechanism (3).

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