Outgoing line connecting assembly, stepping motor and light adjusting device

Abstract

An outgoing line connection assembly comprises a first coil frame which comprises a first frame main body and a first terminal fixing part, the first frame main body is annular, and the first terminal fixing part is arranged at the radial edge of the first frame main body; a first coil wound in a circumferential direction of the first frame body; a first terminal fixed at the first terminal fixing portion; and a connector configured to be electrically connectable to the first terminal, the first terminal including a doubling portion and a terminating portion, the doubling portion and the terminating portion being electrically connected to each other and extending separately from the first terminal fixing portion, the doubling portion extending substantially in a radial direction of the first frame body away from the first frame body, and the terminating portion extending substantially in a radial direction of the first frame body away from the first frame body. An end portion of a wire of the first coil is connected to the doubling portion, and the first terminal is electrically connected to the connector via the terminating portion. The outgoing line connection assembly improves the reliability of the related motor. The invention further discloses a stepping motor and a light adjusting device.

Description

Technical Field

[0001] The present invention relates to an automotive part, and more particularly to an outgoing wire connection assembly, a stepper motor including such an outgoing wire connection assembly, and a lighting adjustment device. Background Art

[0002] Dual-coil stepper motors are used in a variety of applications. For example, with the development of automotive lighting technology, the application of automotive headlight intelligent adjustment systems is becoming more and more widespread, and automotive headlight adjustment can use a dual-coil stepper motor for dimming. In such a headlight adjustment system, the rotor of the motor rotates, thereby driving the nut to rotate. After the nut rotates, it drives the screw to perform a telescopic movement along the axial direction. The ball head push rod at the top of the screw follows the screw to perform a telescopic movement, and the ball head drives the reflector bowl of the headlight to swing back and forth around the rotation axis, so that the irradiation angle of the automotive headlight is changed, achieving a dimming effect.

[0003] The outgoing wire structure of the current dual-coil stepper motor is generally arranged in the middle of the axial direction of the dual coils. When connecting the wire of the coil to the outgoing wire terminal, the wire of the coil is wound around the outgoing wire terminal, and then the two are electrically connected by welding or tinning. In different configurations, the outgoing wire terminals have different structures and different extending directions. In different configurations, various situations may occur, such as unstable connection between the wire of the coil and the outgoing wire terminal, and unstable connection between the outgoing wire terminal and the connector.

[0004] Therefore, there is still a need to propose a solution that can at least solve some of the above technical problems, thereby improving the reliability of the motor. Summary of the Invention

[0005] In view of the above problems, according to a first aspect of the present invention, there is provided an outgoing wire connection assembly, including: a first coil frame, including a first frame body and a first terminal fixing portion, the first frame body being annular, and the first terminal fixing portion being provided at a radial edge of the first frame body; a first coil, the first coil being wound along a circumferential direction of the first frame body; a first terminal, the first terminal being fixed at the first terminal fixing portion; a connector, configured to be electrically connected to the first terminal, wherein the first terminal includes a wire combining portion and a termination portion, the wire combining portion and the termination portion are electrically connected to each other and extend from the first terminal fixing portion at intervals from each other, the wire combining portion extends away from the first frame body substantially along a radial direction of the first frame body, an end of a wire of the first coil is connected to the wire combining portion, and the first terminal is electrically connected to the connector via the termination portion.

[0006] According to the outgoing wire connection assembly of this embodiment, the end of the wire can be connected to the wire combining part of the first terminal, and tinning is only performed on the wire combining part extending substantially in the radial direction, while the spaced-apart termination parts do not need to be tinned. Thus, on the one hand, the wire can be stably fixed to the first terminal and the processing efficiency can be improved. On the other hand, the dimensions of the termination parts will not be changed due to tinning, so the termination parts can be stably adapted to the connector. Therefore, the reliability of the motor equipped with the outgoing wire connection assembly is improved and the manufacturing process is improved.

[0007] The outgoing wire connection assembly according to the present invention may have one or more of the following features.

[0008] According to one embodiment, preferably, the termination part extends substantially along the axial direction of the first frame body. In the outgoing wire connection assembly according to this embodiment, the termination part is spaced apart from the wire combining part, and at least the wire combining part can be conveniently tinned.

[0009] According to one embodiment, preferably, the outgoing wire connection assembly further includes: a second coil frame, including a second frame body and a second terminal fixing part, the second frame body being annular, and the second terminal fixing part being provided at a radial edge of the second frame body; a second coil wound along the circumferential direction of the second frame body; a second terminal fixed at the second terminal fixing part; wherein, the second terminal includes a wire combining part and a termination part, the wire combining part and the termination part of the second terminal are electrically connected to each other and extend from the second terminal fixing part at intervals from each other, the wire combining part of the second terminal extends away from the second frame body substantially in the radial direction of the second frame body, the end of the wire of the second coil is connected to the wire combining part of the second terminal, the termination part of the second terminal extends substantially along the axial direction of the second frame body, and wherein, the first coil frame and the second coil frame are assembled with each other to define a coil frame assembly, wherein, the first frame body and the second frame body are coaxial, the first terminal fixing part and the second terminal fixing part are opposite to each other in the axial direction to define an outgoing wire part, and the second terminal is electrically connected to the connector via the termination part of the second terminal. In the outgoing wire connection assembly according to this embodiment, both its first terminal and second terminal have a wire combining part that is easy to tin and a termination part that is easy to stably terminate to the connector, thereby improving the reliability of the motor equipped with the outgoing wire connection assembly.

[0010] According to an embodiment, preferably, the first terminal is formed in an L-shaped structure, the wire-joining portion and the termination portion of the first terminal respectively form two linear segments constituting the L-shaped structure, the second terminal is formed in an L-shaped structure, and the wire-joining portion and the termination portion of the second terminal respectively form two linear segments constituting the L-shaped structure. The wire-out connection assembly according to this embodiment has first and second terminals with a stable structure and easy to manufacture.

[0011] According to an embodiment, preferably, the termination portion of the first terminal extends from the first terminal fixing portion toward the second terminal fixing portion, the second terminal fixing portion is provided with a second insertion slot for receiving the end of the termination portion of the first terminal, the termination portion of the second terminal extends from the second terminal fixing portion toward the first terminal fixing portion, and the first terminal fixing portion is provided with a first insertion slot for receiving the end of the termination portion of the second terminal. In the wire-out connection assembly according to this embodiment, both ends of the termination portions of the first and second terminals are fixed, thus forming a simply supported beam structure. Such a termination portion is not easily bent when terminating with the mating terminal of the connector, improving the connection stability.

[0012] According to an embodiment, preferably, the first terminal fixing portion has a first insertion protrusion extending toward the second terminal fixing portion, the first insertion protrusion is adjacent to the termination portion of the first terminal, the second terminal fixing portion has a second insertion recess for mutually inserting with the first insertion protrusion, the second terminal fixing portion has a second insertion protrusion extending toward the first terminal fixing portion, the second insertion protrusion is adjacent to the termination portion of the second terminal, and the first terminal fixing portion has a first insertion recess for mutually inserting with the second insertion protrusion. In the wire-out connection assembly according to this embodiment, when assembling the first coil frame and the second coil frame, the movement between the first coil frame and the second coil frame is guided, thus assisting the assembly. In addition, the mutual cooperation of the insertion protrusions and the insertion recesses can protect the first and second terminals during and after assembly.

[0013] According to an embodiment, preferably, the connector is provided with a mating terminal extending toward the wire-out portion, and the end of the mating terminal is in a harpoon shape for attaching to the termination portion of the first terminal or the second terminal. The wire-out connection assembly of this embodiment has a mating terminal that matches the termination portions of the first and second terminals and is convenient for termination.

[0014] According to one embodiment, preferably, the connector includes a first parallel - wire portion receiving recess and a second parallel - wire portion receiving recess for receiving the parallel - wire portions of the first terminal and the second terminal respectively. For the outgoing - wire connection assembly according to this embodiment, the parallel - wire portions extending substantially radially outward do not need to be fixed to other parts of the outgoing - wire connection assembly, effectively preventing the risk of wire breakage during the assembly of the outgoing - wire connection assembly.

[0015] According to one embodiment, preferably, the outgoing - wire connection assembly further includes a middle - pole plate disposed axially between the first frame body and the second frame body. The middle - pole plate has a plurality of pole teeth extending axially inside its radial direction. The middle - pole plate is provided with a grounding terminal extending away from the main body of the middle - pole plate at a position close to the outgoing - wire portion.

[0016] According to one embodiment, preferably, the end of the grounding terminal extending away from the main body of the middle - pole plate is configured to be received inside the main body of the connector.

[0017] According to one embodiment, preferably, a mating grounding terminal including a straight - line section is provided inside the main body of the connector. The end of the grounding terminal extending away from the main body of the middle - pole plate is in a harpoon shape to be attached to the straight - line section of the mating grounding terminal. For the outgoing - wire connection assembly according to this embodiment, the grounding terminal and the mating terminal are firmly connected to each other, and their respective structures and installations are stable.

[0018] According to one embodiment, preferably, the middle - pole plate includes a first middle - pole plate arranged adjacent to the first frame body and a second middle - pole plate arranged adjacent to the second frame body. The grounding terminal of the first middle - pole plate defines a first grounding terminal, and the grounding terminal of the second middle - pole plate defines a second grounding terminal. The first grounding terminal and the second grounding terminal are arranged on opposite circumferential sides of the outgoing - wire portion. The connector is provided with one mating grounding terminal, and the mating grounding terminal is configured to be attached to one of the first grounding terminal and the second grounding terminal. For the outgoing - wire connection assembly according to this embodiment, only one mating grounding terminal needs to be provided in the connector, and the connection is reversed by reversely inserting the connector into the outgoing - wire portion, thus simplifying the layout and saving costs.

[0019] According to a second aspect of the present invention, a stepping motor is proposed, and the stepping motor includes any one of the foregoing outgoing - wire connection assemblies.

[0020] The stepping motor according to the present invention may have one or more of the following features.

[0021] According to one embodiment, preferably, the stepper motor further comprises a first shell and a second shell, wherein the first shell and the second shell are respectively arranged on one side of the first coil frame and one side of the second coil frame and surround the coil frame assembly together, the connector comprises a connector housing, the connector housing is provided with a first card slot open toward the first coil frame and a second card slot open toward the second coil frame, an edge section of the first shell is received in the first card slot, and an edge section of the second shell is received in the second card slot, so that the first shell, the second shell and the connector housing are assembled with each other. The stepper motor according to this embodiment has various shell components (first shell, second shell and connector housing) firmly connected to each other.

[0022] According to one embodiment, preferably, the stepper motor further includes a first magnetic ring, a second magnetic ring, a bearing, a nut component and a screw component, wherein the first magnetic ring and the second magnetic ring are respectively arranged radially inside the first coil frame and the second coil frame, the bearing is arranged between the first magnetic ring and the second magnetic ring in the axial direction, the outer ring of the bearing is fixed relative to the first coil frame and the second coil frame, the inner ring of the bearing is fixed relative to the first magnetic ring and the second magnetic ring, the nut component is fixed relative to the inner ring of the bearing, and the screw component is threadedly connected to the nut component, wherein the nut component and the inner ring of the bearing are manufactured by integral injection molding. In the stepper motor according to this embodiment, a more reliable connection is formed between the nut component and the bearing.

[0023] According to a third aspect of the present invention, a light adjustment device is provided. The light adjustment device comprises any one of the aforementioned stepping motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention, wherein the drawings are only used to illustrate some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.

[0025] Figure 1 is a perspective view of a light adjusting device according to the present invention.

[0026] Figure 2 is an exploded view of a light adjustment device according to the present invention.

[0027] Figure 3 is a cross-sectional view of a light adjustment device according to the present invention.

[0028] Figure 4 is a perspective view of a first coil frame of an outlet connection assembly according to the present invention.

[0029] Figure 5 is a perspective view of the second coil frame of the outgoing line connection component according to the present invention.

[0030] Figure 6A and Figure 6B are a front perspective view and a back perspective view of the connector of the outgoing line connection component according to the present invention.

[0031] Figure 7 shows a perspective view of the mating terminal of the outgoing line connection component according to the present invention.

[0032] Figure 8 shows the first middle plate and the second middle plate of the outgoing line connection component according to the present invention.

[0033] Figure 9 shows the first coil frame, the second coil frame, the first middle plate and the second middle plate of the outgoing line connection component assembled together.

[0034] Figure 10 shows a sectional perspective view of the first coil frame, the second coil frame, the first middle plate, the second middle plate and the connector of the outgoing line connection component assembled together.

[0035] Figure 11 shows a cross-sectional view of the first coil frame, the second coil frame and the connector of the outgoing line connection component assembled together.

[0036] Figure 12 shows another perspective view of the light adjustment device according to the present invention, in which the connector is reversely installed.

[0037] List of Reference Numerals

[0038] 1 Light adjustment device

[0039] 5 Stepper motor

[0040] 10 Outgoing line connection component

[0041] 100 First coil frame

[0042] 110 First frame body

[0043] 120 First terminal fixing part

[0044] 121 First insertion slot

[0045] 123 First insertion protrusion

[0046] 125 Second insertion recess

[0047] 127 First insertion protrusion gap

[0048] 150 First terminal

[0049] 151 Parallel connection part

[0050] 152 Termination part

[0051] 170 Cylindrical housing

[0052] 180 Coil frame assembly

[0053] 190 Lead-out part

[0054] 200 Second coil frame

[0055] 210 Second frame body

[0056] 220 Second terminal fixing part

[0057] 221 Second insertion slot

[0058] 223 Second insertion protrusion

[0059] 225 Second insertion recess

[0060] 227 Second insertion protrusion gap

[0061] 250 Second terminal

[0062] 251 Parallel connection part

[0063] 252 Termination part

[0064] 300 First coil

[0065] 400 Second coil

[0066] 500 Connector

[0067] 505 Connector housing

[0068] 506 Terminal slot

[0069] 508 Housing opening

[0070] 510 First parallel connection part receiving recess

[0071] 520 Second parallel connection part receiving recess

[0072] 530 First card slot

[0073] 540 Second card slot

[0074] 550 Mate terminal

[0075] 552 Termination end of mate terminal

[0076] 555 mating with the grounding terminal

[0077] Straight section of 556 mating with the grounding terminal

[0078] 610 First middle plate

[0079] 611 Pole teeth

[0080] 612 Radial protrusion

[0081] 615 First grounding terminal

[0082] 620 Second middle plate

[0083] 621 Pole teeth

[0084] 622 Radial protrusion

[0085] 625 Second grounding terminal

[0086] 710 First magnetic ring

[0087] 720 Second magnetic ring

[0088] 730 Bearing

[0089] 731 Outer ring of the bearing

[0090] 732 Inner ring of the bearing

[0091] 740 Nut component

[0092] 750 Screw component

[0093] 760 Split cylindrical pin

[0094] 770 Stop rotating shaft

[0095] 810 First housing

[0096] 811 Edge section

[0097] 820 Second housing

[0098] 821 Edge section

[0099] 830 Mounting plate

[0100] 840 Push rod

[0101] A Axial direction Specific implementation manner

[0102] In order to make the objectives, technical solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of specific embodiments of the present invention. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0103] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second", and similar terms used in the specification and claims of this patent application of the present invention do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to direct connection, but may include indirect connection. The terms such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0104] The present invention will be described in detail below by way of describing exemplary embodiments.

[0105] Figure 1 A perspective view of the lighting adjustment device 1 according to the present invention is shown. Figure 2 An exploded view of the lighting adjustment device 1 according to the present invention is shown. Figure 3 A cross-sectional view of the lighting adjustment device 1 according to the present invention is shown. As Figures 1 - 3 shown, the lighting adjustment device 1 according to the present invention includes a stepper motor 5 and a screw member 750 driven by the stepper motor 5. The screw member 750 is configured to drive the ball head push rod 840 to move, thereby achieving the purpose of adjusting the headlight. The stepper motor 5 can also be applied to the field of servo motor area control integrated systems.

[0106] Specifically, as Figures 1 - 3As shown, the stepper motor 5 includes a stator portion and a rotor portion. Among them, the stator portion includes a first coil frame 100, a second coil frame 200, a first coil 300, a second coil 400, a first middle pole plate 610, a second middle pole plate 620, a first outer shell 810, and a second outer shell 820. Among them, the first coil frame 100, the first middle pole plate 610, the second middle pole plate 620, and the second coil frame 200 are coaxially arranged along the axial direction A. The first coil 300 is wound along the circumferential direction of the first frame body 110 of the first coil frame 100, and the second coil 400 is wound along the circumferential direction of the second frame body 210 of the second coil frame 200. The first middle pole plate 610 has a plurality of pole teeth 611 axially extending radially inside the first frame body 110, and the second middle pole plate 620 has a plurality of pole teeth 621 axially extending radially inside the second frame body 210.

[0107] On the other hand, the first outer shell 810 is provided on one side of the first coil frame 100, the second outer shell 820 is provided on one side of the second coil frame 200, and the first outer shell 810 and the second outer shell 820 jointly surround the assembled first coil frame 100 and second coil frame 200. In addition, the first outer shell 810 includes a plurality of other pole teeth (not shown) that are circumferentially staggered with the plurality of pole teeth 611 in the assembled state. The plurality of other pole teeth of the first outer shell 810 extend axially radially inside the first frame body 110 from one axial side of the first frame body 110, and the extending direction is opposite to the extending direction of the plurality of pole teeth 611 of the first middle pole plate 610. The second outer shell 820 includes a plurality of other pole teeth (not shown) that are circumferentially staggered with the plurality of pole teeth 621 in the assembled state. The plurality of other pole teeth of the second outer shell 820 extend axially radially inside the second frame body 210 from one axial side of the second frame body 210, and the extending direction is opposite to the extending direction of the plurality of pole teeth 621 of the second middle pole plate 620. Through the above structure, the stator portion generates an exciting magnetic field.

[0108] The rotor part of the stepping motor 5 includes a first magnetic ring 710, a second magnetic ring 720, a bearing 730, and a nut member 740. Among them, the first magnetic ring 710 is arranged radially inside the first frame body 110, and the pole teeth of the first middle pole plate 610 and the first housing 810 are arranged between the first magnetic ring 710 and the first frame body 110. The second magnetic ring 720 is arranged radially inside the second frame body 210, and the pole teeth of the second middle pole plate 620 and the second housing 820 are arranged between the second magnetic ring 720 and the second frame body 210. The bearing 730 is arranged axially between the first magnetic ring 710 and the second magnetic ring 720, and the outer ring 731 of the bearing 730 is fixed relative to the first coil frame 100 and the second coil frame 200, and the inner ring 732 of the bearing 730 is fixed relative to the first magnetic ring 710 and the second magnetic ring 720. Thus, the inner ring 732 of the bearing, the first magnetic ring 710, and the second magnetic ring 720 can rotate together. In addition, the nut member 740 is fixed relative to the inner ring 732 of the bearing, so that the nut member 740 can rotate together with the inner ring 732 of the bearing, the first magnetic ring 710, and the second magnetic ring 720. At the same time, since the nut member 740 is fixed relative to the inner ring 732 of the bearing, the nut member 740 will not move in the axial direction A. According to an embodiment of the present invention, the nut member 740 and the inner ring 732 of the bearing can be manufactured by integral injection molding, so that a more reliable connection is formed between the nut member 740 and the inner ring 732 of the bearing.

[0109] The nut member 740 has a threaded hole extending in the axial direction A, and the screw member 750 is threadedly engaged in the threaded hole. The screw member 750 extends axially out of the first coil frame 100, and the protruding section is arranged in a cylindrical housing 170 fixed relative to the first frame body 110. A stop rotation shaft 770 is provided in the protruding section of the screw member 750 to prevent the screw member 750 from rotating around its central axis. For example, the stop rotation shaft 770 passes through the screw member 750 in the radial direction of the screw member 750, and both ends of the stop rotation shaft 770 protrude from the surface of the screw member 750 in the radial direction. Two guide grooves extending in the axial direction A are provided inside the cylindrical housing 170 for receiving and guiding the two ends of the stop rotation shaft 770 protruding from the surface of the screw member 750. Thus, the screw member 750 cannot rotate around its central axis, and when the nut member 740 rotates forward or backward, the screw member 750 will correspondingly move forward or backward in the axial direction A.

[0110] Continue to refer to Figure 3, a distal end of a protruding section of the screw member 750 is provided with an open split pin 760. The open split pin 760 is configured to fixedly connect the spherical head push rod 840 to the distal end of the screw member 750, such that the movement of the screw member 750 in the axial direction A can drive the push rod 840, and further drive the movement of, for example, a reflector bowl of a headlight, thereby changing the irradiation angle of the headlight and achieving the effect of adjusting the light.

[0111] In addition, the light adjusting device 1 further includes a mounting plate 830. The mounting plate is fixed to the first housing 810 and is configured to mount the light adjusting device 1 to a suitable position, for example, in a vehicle.

[0112] Next, with reference to the subsequent drawings, each component of the wire outlet connection assembly 10 according to the present invention will be described first. The wire outlet connection assembly 10 according to the present invention includes a first coil frame 100, a first coil 300, a first terminal 150, a second coil frame 200, a second coil 400, a second terminal 250, and a connector 500.

[0113] Referring to Figure 4 , the first coil frame 100 includes a first frame body 110 and a first terminal fixing portion 120. As described above, the first frame body 110 is annular, such that the first coil 300 can be wound along the circumferential direction of the first frame body 110. For example, the first frame body 110 may have an annular recess extending in the circumferential direction for arranging the first coil 300. The first terminal fixing portion 120 is provided at a radial edge of the first frame body 110, for example, arranged on one side of the aforementioned annular recess of the first frame body 110 in the axial direction A. The first terminal 150 is fixed at the first terminal fixing portion 120, Figure 4 The shown first coil frame 100 is provided with two first terminals 150.

[0114] Among them, the first terminal 150 is formed into an L-shaped structure, including a wire merging portion 151 and a terminal connection portion 152. The wire merging portion 151 and the terminal connection portion 152 respectively form two straight sections of the L-shaped structure. As Figure 4 shown, the wire merging portion 151 and the terminal connection portion 152 respectively extend from the first terminal fixing portion 120 spaced apart from each other. Among them, the wire merging portion 151 extends away from the first frame body 110 substantially along the radial direction of the first frame body 110, and the terminal connection portion 152 extends substantially along the axial direction A of the first frame body 110. For example, the first terminal 150 can be formed by bending after being inserted into the first terminal fixing portion 120. However, according to other embodiments of the present invention not shown, the wire merging portion 151 and the terminal connection portion 152 respectively extend from the first terminal fixing portion 120 spaced apart from each other, and the wire merging portion 151 and the terminal connection portion 152 are electrically connected to each other through other conductive components or sections.

[0115] The end of the wire of the first coil 300 wound around the first frame body 110 is arranged to be connected to the wire joining portion 151. For example, the end of the wire is arranged on the wire joining portion 151 by winding or the like, and the wire is electrically connected to the wire joining portion 151 by tinning. It should be noted that since the wire joining portion 151 extends away from the first frame body 110 substantially along the radial direction of the first frame body 110, the tinning position is easily spaced apart from the first coil 300 itself, so that the first coil 300 is not easily damaged. Therefore, the tinning method can be safely used for electrical connection. Compared with the wire and terminal connected by welding (which may have unstable or incomplete welding), the electrical connection process between the wire and the first terminal 150 according to the embodiment of the present invention can have a higher degree of automation and an improved electrical connection effect. On the other hand, tinning is not required on the termination portion 152, avoiding the situation that the termination portion 152 cannot be stably adapted to the connector 500 due to the size change caused by tinning.

[0116] Further referring to Figure 4 , the first terminal fixing portion 120 is provided with a first insertion recess 125 and a first insertion groove 121 located at the first insertion recess 125. The first insertion recess 125 is recessed in the axial direction A and is configured to receive the second insertion protrusion 223 of the second terminal fixing portion 220. The first insertion groove 121 is configured to receive the end of the termination portion 252 of the second terminal 250 extending from the second terminal fixing portion 220, as described in detail later. Figure 4 It shows that the first terminal fixing portion 120 has two first insertion recesses 125 and two first insertion grooves 121.

[0117] Further referring to Figure 4 , the first terminal fixing portion 120 is provided with a first insertion protrusion 123 adjacent to the termination portion 152 of the first terminal 150. The first insertion protrusion 123 protrudes in the axial direction A. The first insertion protrusion 123 is configured to be received in the second insertion recess 225 of the second terminal fixing portion 220, as described in detail later. Figure 4 It shows that the first terminal fixing portion 120 has two first insertion protrusions 123.

[0118] Referring to Figure 5, the second coil bobbin 200 includes a second bobbin body 210 and a second terminal fixing portion 220. As described above, the second bobbin body 210 is annular, such that the second coil 400 can be wound along the circumferential direction of the second bobbin body 210. For example, the second bobbin body 210 may have an annular recess extending in the circumferential direction for arranging the second coil 400. The second terminal fixing portion 220 is provided at the radial edge of the second bobbin body 210, for example, arranged on one side of the aforementioned annular recess of the second bobbin body 210 in the axial direction A. The second terminal 250 is fixed at the second terminal fixing portion 220, Figure 5 The second coil bobbin 200 shown is provided with two second terminals 250.

[0119] wherein, the second terminal 250 is formed in an L-shaped structure, including a wire combining portion 251 and a termination portion 252. The wire combining portion 251 and the termination portion 252 respectively form two straight segments of the L-shaped structure. As Figure 5 shown, the wire combining portion 251 and the termination portion 252 respectively extend from the second terminal fixing portion 220 spaced apart from each other. Among them, the wire combining portion 251 extends away from the second bobbin body 210 substantially along the radial direction of the second bobbin body 210, and the termination portion 252 extends substantially along the axial direction A of the second bobbin body 210. For example, the second terminal 250 can be formed by bending after being inserted into the second terminal fixing portion 220. However, according to other embodiments of the present invention not shown, the wire combining portion 251 and the termination portion 252 respectively extend from the second terminal fixing portion 220 spaced apart from each other, and the wire combining portion 251 and the termination portion 252 are electrically connected to each other through other conductive components or segments.

[0120] The end of the wire of the second coil 400 wound on the second bobbin body 210 is configured to be connected to the wire combining portion 251. For example, the end of the wire is arranged on the wire combining portion 251 in a winding manner or the like, and the wire is electrically connected to the wire combining portion 251 through tinning. Similarly, since the wire combining portion 251 extends away from the second bobbin body 210 substantially along the radial direction of the second bobbin body 210, the tinning position is easily spaced apart from the second coil 400 itself, so that the second coil 400 is not easily damaged. Therefore, the tinning method can be safely used for electrical connection. Compared with the wire and terminal connected by welding, the electrical connection process between the wire and the second terminal 250 according to the embodiment of the present invention can have a higher degree of automation and an improved electrical connection effect. On the other hand, tinning is not required on the termination portion 252, avoiding the inability of the termination portion 252 to be stably adapted to the connector 500 due to the size change caused by tinning. Generally speaking, the connection stability in the wire outlet connection assembly 10 is improved.

[0121] Further referring to Figure 5, the second terminal fixing portion 220 is provided with a second insertion recess 225 and a second insertion groove 221 located at the second insertion recess 225. The second insertion recess 225 is recessed along the axial direction A and is configured to receive the first insertion protrusion 123 of the first terminal fixing portion 120. The second insertion groove 221 is configured to receive the end of the termination portion 152 of the first terminal 150 extending from the first terminal fixing portion 120, as described in detail later. Figure 5 shows that the second terminal fixing portion 220 has two second insertion recesses 225 and two second insertion grooves 221.

[0122] Further referring to Figure 5 , the second terminal fixing portion 220 is provided with a second insertion protrusion 223 adjacent to the termination portion 252 of the second terminal 250. The second insertion protrusion 223 protrudes along the axial direction A. The second insertion protrusion 223 is configured to be received in the first insertion recess 125 of the first terminal fixing portion 120, as described in detail later. Figure 5 shows that the second terminal fixing portion 220 has two second insertion protrusions 223.

[0123] When the first coil frame 100 and the second coil frame 200 are assembled with each other to form the coil frame assembly 180, the first terminal fixing portion 120 and the second terminal fixing portion 220 face each other along the axial direction A, thereby defining the wire portion 190.

[0124] Figure 6A and Figure 6B are a front perspective view and a rear perspective view of the connector 500 of the wire outlet connection assembly 10 according to the present invention, respectively. The connector 500 includes a connector housing 505, and a cavity is provided in the connector housing 505 to accommodate mating terminals. Specifically, four mating terminals 550 and a mating ground terminal 555 are arranged in the cavity of the connector housing 505. The mating terminals 550 and the mating ground terminal 555 can both be made of brass and are surface-tin-plated. Also refer to Figure 7 , the four mating terminals 550 have the same structure. Each mating terminal 550 has an L-shaped configuration, and its termination end 552 has a harpoon shape to respectively clamp onto the axially extending termination portions 152 or 252 of the first terminal 150 or the second terminal 250. The mating ground terminal 555 has an overall linear shape, and in particular has a linear section 556 to terminate to the first ground terminal 615 or the second ground terminal 625 extending from the first middle plate 610 or the second middle plate 620, as described in detail later. As Figure 6B shows, a terminal slot 506 is further provided on the back of the connector housing 505.

[0125] As Figure 6A shows, according to an embodiment of the present invention, the four mating terminals 550 and the one mating ground terminal 555 are substantially arranged inFigure 7 are arranged in the cavity of the connector housing 505 in the shown form. For example, four mating terminals 550 and one mating ground terminal 555 are formed in the connector 500 by insert molding, so that the connector 500 has high stability and is not prone to deformation or poor dimensions. Among them, the four mating terminals 550 are arranged side by side and roughly centered in the connector housing 505, and the mating ground terminal 555 is arranged on one side of the four mating terminals 550. When the connector 500 is assembled to the first coil frame 100 and the second coil frame 200, the mating ground terminal 555 is located on one side of the four mating terminals 550 in the circumferential direction.

[0126] Continuing to refer to Figure 6A , the connector 500 includes a first parallel wire portion receiving recess 510 and a second parallel wire portion receiving recess 520, which are respectively configured to accommodate the parallel wire portion 151 of the first terminal extending from the first terminal fixing portion 120 and the parallel wire portion 251 of the second terminal extending from the second terminal fixing portion 220, as detailed later. In Figure 6A , the connector 500 has a single opening facing the wire outlet portion 190. However, in an embodiment not shown according to the present invention, the surface of the connector 500 facing the wire outlet portion 190 may have a plurality of openings so that the mating terminals 550, the mating ground terminal 555, the first parallel wire portion receiving recess 510, and the second parallel wire portion receiving recess 520 can be accessed. It should be noted that in this case, on the surface of the connector 500 facing the wire outlet portion 190, there should be at least another mating opening symmetric to the opening corresponding to the mating ground terminal 555 with respect to the four mating terminals 550, so that the opening corresponding to the mating ground terminal 555 and this another mating opening respectively receive the first ground terminal 615 of the first middle plate 610 or the second ground terminal 625 of the second middle plate 620, as detailed later.

[0127] Figure 8 shows the first middle plate 610 and the second middle plate 620 of the wire outlet connection assembly 10 according to the present invention, Figure 8 where the first middle plate 610 and the second middle plate 620 are in the exploded view position. The first middle plate 610 has a plurality of pole teeth 611 extending in the axial direction A along its radial inner part, and the second middle plate 620 has a plurality of pole teeth 621 extending in the axial direction A along its radial inner part. The first middle plate 610 is provided with a ground terminal 615 that is away from the main body of the first middle plate 610 and extends substantially radially outward at its radial outer edge. The second middle plate 620 is provided with a ground terminal 625 that is away from the main body of the second middle plate 620 and extends substantially radially outward at its radial outer edge. In fact, the first middle plate 610 and the second middle plate 620 can be designed to have the same structure, only with opposite orientations during assembly, whereby the manufacturing cost can be further saved.

[0128] Next, with reference to Figure 9 , the first coil frame 100, the first middle plate 610, the second middle plate 620, and the second coil frame 200 assembled with each other are described. As shown in Figure 9 , the first coil frame 100, the first middle plate 610, the second middle plate 620, and the second coil frame 200 are stacked and arranged in the axial direction A. Among them, the pole teeth 611 of the first middle plate 610 and the pole teeth 621 of the second middle plate 620 respectively extend into the radial interior of the first coil frame 100 and the radial interior of the second coil frame 200. At the same time, the first terminal fixing portion 120 of the first coil frame 100 and the second terminal fixing portion 220 of the second coil frame 200 face each other and are plugged into each other.

[0129] Specifically, also referring to Figure 4 and Figure 5 , the first plugging protrusion 123 of the first terminal fixing portion 120 and the second plugging recess 225 of the second terminal fixing portion 220 are plugged into each other, and the first plugging recess 125 of the first terminal fixing portion 120 and the second plugging protrusion 223 of the second terminal fixing portion 220 are plugged into each other. And, the end of the end joint portion 152 of the first terminal 150 extending from the first terminal fixing portion 120 is received in the second plugging groove 221 of the second terminal fixing portion 220, and the end of the end joint portion 252 of the second terminal 250 extending from the second terminal fixing portion 220 is received in the first plugging groove 121 of the first terminal fixing portion 120. Thus, the first terminal fixing portion 120 and the second terminal fixing portion 220 are firmly fixed to each other. In addition, also referring to Figure 4 and Figure 5 , a first plugging protrusion gap 127 is formed between the two first plugging protrusions 123 of the first terminal fixing portion 120, which receives one second plugging protrusion 223 of the second terminal fixing portion 220, and a second plugging protrusion gap 227 is formed between the two second plugging protrusions 223 of the second terminal fixing portion 220, which receives one first plugging protrusion 123 of the first terminal fixing portion 120. Thus, the two first plugging protrusions 123 and the two second plugging protrusions 223 are arranged side by side adjacent to each other, making the structure of the wire outlet portion 190 more stable.

[0130] Still referring to Figure 9 as well as Figure 4 and Figure 5, since the end portions of the termination portions 152 of the first terminals 150 are received in the second insertion grooves 221 of the second terminal fixing portions 220, and the end portions of the termination portions 252 of the second terminals 250 are received in the first insertion grooves 121 of the first terminal fixing portions 120, both ends of each termination portion 152, 252 are fixed, forming a simply supported beam. Thus, when the mating terminals 550 in the form of harpoons extending from the connector 500 are attached to the termination portions 152, 252 (i.e., when a force is applied toward the central axis of, for example, the first frame body 110 at a substantially middle position of the termination portions 152, 252), the displacement or deformation of the termination portions 152, 252 is very small, thereby improving the connection stability and also reducing the connection error with the connector 500.

[0131] As Figure 9 shown, the first middle plate 610 and the second middle plate 620 are arranged between the first coil frame 100 and the second coil frame 200, and the first ground terminal 615 and the second ground terminal 625 are respectively arranged at opposite sides in the circumferential direction of the lead-out portion 190, and respectively extend outward from the first middle plate 610 and the second middle plate 620. In fact, according to the illustrated embodiment of the present invention, the first ground terminal 615, the second ground terminal 625, the parallel connection portions 151 of the first terminals 150, and the parallel connection portions 251 of the second terminals 250 extend substantially parallel to each other so as to be received in the connector 500.

[0132] Figure 10 A cross-sectional perspective view showing the first coil frame 100, the second coil frame 200, the first middle plate 610, the second middle plate 620, and the connector 500 of the lead-out connection assembly 10 according to the present invention assembled together is shown. The cross-section is perpendicular to the axial direction A and passes through the harpoon-shaped termination portion of the mating terminal 550. Figure 10 The second housing 820 is also shown. Also referring to Figure 1 and Figure 2 , recesses recessed in the axial direction A are provided at positions where the first housing 810 and the second housing 820 are configured to have a circumferential distance from the lead-out portion 190, and these recesses receive the radially protruding portions 612, 622 of the first middle plate 610 and the second middle plate 620 to help fix the first middle plate 610 and the second middle plate 620 relative to the first housing 810 and the second housing 820 in the axial direction and the circumferential direction.

[0133] Figure 10 The first terminals 150 and the mating terminals 550 terminated with each other and the second terminals 250 and the mating terminals 550 terminated with each other are also shown. Among them, the termination portions 152, 252 are received in the harpoon-shaped termination portions of the mating terminals 550, that is, received between two parallel extending branch portions of the termination portions of the mating terminals 550. Also referring toFigure 7 , on the one hand, the ends of the two branch portions can both have chamfers to facilitate the entry of the termination portions 152 or 252 between the two branch portions. On the other hand, the distance between the two branch portions can be slightly smaller than the size of the termination portions 152 or 252 to form an interference fit with the termination portions 152 or 252. The surfaces of the termination portions 152 and 252 can also be tinned, and when the termination portions 152 or 252 are located between the two branch portions, they can closely fit with the two branch portions to play a conduction role.

[0134] Figure 10 Also shown are a ground terminal 615 and a mating ground terminal 555 that are terminated with each other. Among them, the straight section 556 of the mating ground terminal 555 is received in the harpoon-shaped termination end of the ground terminal 615, that is, between the two parallelly extending branch portions at the termination end of the ground terminal 615. For example, both ends of the mating ground terminal 555 can be injection molded in, for example, the housing material of the connector 500, leaving the straight section 556 to connect with the ground terminal 615 or 625, thereby ensuring the straight section 556 and the termination effect.

[0135] It should be noted that in Figure 10 , the ground terminal 625 extending from the second intermediate plate 620 is not joined to any terminal. However, if the connector 500 is reversely attached to the lead-out portion 190 in the axial direction A (for example, see Figure 12 ), then the ground terminal 625 will be terminated to the mating ground terminal 555, and the ground terminal 615 is not joined to any terminal. In addition, similarly, the two branch portions of the ground terminals 615 and 625 that form a harpoon shape can also have chamfered ends and a size slightly smaller than the straight section 556 of the mating ground terminal 555.

[0136] Since the above terminal connections do not require soldering, defects such as solder joint voids, component burns, and solder balls during soldering are eliminated. And, due to the interference fit, after assembly, the connector 500 will be fastened to the first coil frame 100 and the second coil frame 200 with each other.

[0137] Figure 11 A cross-sectional view of the first coil frame 100, the second coil frame 200, and the connector 500 of the lead-out connection assembly 10 according to the present invention assembled together is shown, particularly showing the structure near the connector 500, and the cross-section passes through, for example, the central axis of the first frame body 110. Figure 11 The first parallel connection portion receiving recess 510 and the second parallel connection portion receiving recess 520 are specifically shown. As Figure 11As shown, the parallel line portion 151 of the first terminal is received in the first parallel line portion receiving recess 510 and does not contact the wall of the receiving recess 510, and the parallel line portion 251 of the second terminal is received in the second parallel line portion receiving recess 520 and does not contact the wall of the receiving recess 520. At the same time, the parallel line portions 151 and 251 do not need to be welded to the circuit board, reducing the risk of disconnection of the parallel line portions 151 and 251.

[0138] Figure 11 The first card slot 530 and the second card slot 540 of the connector housing 505 are also shown. The first card slot 530 is open toward the first coil frame 100, for example, along the axial direction A, and the edge section 811 of the first shell 810 is received in the first card slot 530. The second card slot 540 is open toward the second coil frame 200, for example, along the axial direction A, and the edge section 821 of the second shell 820 is received in the second card slot 540. Thus, the first shell 810, the second shell 820 and the connector housing 505 are assembled with each other. The edges of the first card slot 530 and the second card slot 540 may also have chamfers, so that the edge section 811 or 821 is easier to fall into the corresponding card slot, which is convenient for assembly and not easy to damage the connector 500.

[0139] In fact, in the process of assembling the connector 500 to the outlet connection assembly 10, first, the first coil frame 100, the first middle plate 610, the second middle plate 620, and the second coil frame 200 are assembled to each other (in the process of assembling the corresponding stepper motor 5, the rotor part is also arranged axially inside these components at this time), and then, the connector 500 is plugged into the formed outlet portion 190 (at this time, the first terminal 150, the second terminal 250 and the grounding terminal 615 or 625 are terminated to the corresponding terminal of the connector 500), and then, the first shell 810 and the second shell 820 are connected to each other approximately in the axial direction around the aforementioned components from the outside, and at the same time, the edge section 811 of the first shell 810 is received in the first card slot 530, and the edge section 821 of the second shell 820 is received in the second card slot 540. Thus, the first shell 810, the second shell 820 and the connector housing 505 are firmly connected to each other. In addition, such an assembly method is simple, efficient and more reliable.

[0140] Figure 12 The connector 500 is shown attached to the outlet portion 190 in the reverse direction of the axial direction A to Figure 1 In contrast. Figure 12 In the case of , the ground terminal 625 will be terminated to the mating ground terminal 555, and the ground terminal 615 will not be connected to any terminal. Figure 1 and Figure 12, according to the present invention, the outgoing line connection component 10 can achieve two-way connection while saving costs.

[0141] The exemplary embodiments of the outgoing line connection component, the stepping motor, and the lighting adjustment device proposed by the present invention have been described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that, without departing from the concept of the present invention, various modifications and variations can be made to the above specific embodiments, and various combinations of the technical features and structures proposed by the present invention can be made without exceeding the protection scope of the present invention.

Claims

1. An outgoing line connection assembly for an electric machine, comprising: A first coil frame (100), including a first frame body (110) and a first terminal fixing portion (120), the first frame body (110) being annular, and the first terminal fixing portion (120) being provided at a radial edge of the first frame body (110); A first coil (300), the first coil being wound along a circumferential direction of the first frame body (110); A first terminal (150), the first terminal being fixed at the first terminal fixing portion (120); A connector (500), configured to be electrically connected to the first terminal (150), wherein, The first terminal (150) includes a wire-joining portion (151) and a termination portion (152), the wire-joining portion (151) and the termination portion (152) being electrically connected to each other and extending from the first terminal fixing portion (120) spaced apart from each other respectively, the wire-joining portion (151) extending away from the first frame body (110) substantially along a radial direction of the first frame body (110), an end of a wire of the first coil (300) being connected to the wire-joining portion (151), and the first terminal (150) being electrically connected to the connector (500) via the termination portion (152).

2. The outgoing line connection assembly according to claim 1, wherein, The termination portion (152) extends substantially along an axial direction (A) of the first frame body (110).

3. The outgoing line connection assembly according to claim 2, further comprising: A second coil frame (200), including a second frame body (210) and a second terminal fixing portion (220), the second frame body (210) being annular, and the second terminal fixing portion (220) being provided at a radial edge of the second frame body (210); A second coil (400), the second coil being wound along a circumferential direction of the second frame body (210); A second terminal (250), the second terminal being fixed at the second terminal fixing portion (220); wherein, The second terminal (250) includes a wire-joining portion (251) and a termination portion (252), the wire-joining portion (251) and the termination portion (252) of the second terminal being electrically connected to each other and extending from the second terminal fixing portion (220) spaced apart from each other respectively, the wire-joining portion (251) of the second terminal extending away from the second frame body (210) substantially along a radial direction of the second frame body (210), an end of a wire of the second coil (400) being connected to the wire-joining portion (251) of the second terminal, and the termination portion (252) of the second terminal (250) extending substantially along an axial direction (A) of the second frame body (210), and wherein, The first coil frame (100) and the second coil frame (200) are assembled with each other to define a coil frame assembly (180), wherein the first frame body (110) and the second frame body (210) are coaxial, the first terminal fixing part (120) and the second terminal fixing part (220) are opposite to each other in the axial direction (A) to define an outgoing line part (190), and the second terminal (250) is electrically connected to the connector (500) via the termination part (252) of the second terminal.

4. The outgoing line connection assembly according to claim 3, wherein the first terminal (150) is formed in an L-shaped structure, and the wire combining part (151) and the termination part (152) of the first terminal respectively form two straight line segments constituting the L-shaped structure. the second terminal (250) is formed in an L-shaped structure, and the wire combining part (251) and the termination part (252) of the second terminal respectively form two straight line segments constituting the L-shaped structure.

5. The outgoing line connection assembly according to claim 3, wherein the termination part (152) of the first terminal (150) extends from the first terminal fixing part (120) towards the second terminal fixing part (220), and the second terminal fixing part (220) is provided with a second insertion slot (221) for receiving the end of the termination part (152) of the first terminal. the termination part (252) of the second terminal (250) extends from the second terminal fixing part (220) towards the first terminal fixing part (120), and the first terminal fixing part (120) is provided with a first insertion slot (121) for receiving the end of the termination part (252) of the second terminal.

6. The outgoing line connection assembly according to claim 5, wherein the first terminal fixing part (120) has a first insertion protrusion (123) extending towards the second terminal fixing part (220), the first insertion protrusion (123) is adjacent to the termination part (152) of the first terminal, and the second terminal fixing part (220) has a second insertion recess (225) for plugging with the first insertion protrusion (123). the second terminal fixing part (220) has a second insertion protrusion (223) extending towards the first terminal fixing part (120), the second insertion protrusion (223) is adjacent to the termination part (252) of the second terminal, and the first terminal fixing part (120) has a first insertion recess (125) for plugging with the second insertion protrusion (223).

7. The outgoing line connection assembly according to claim 3, wherein the connector (500) is provided with a mating terminal (550) extending towards the outgoing line part (190), and the end of the mating terminal (550) is in a harpoon shape for attaching to the termination part of the first terminal (150) or the second terminal (250).

8. The outgoing line connection assembly according to claim 3, wherein The connector (500) includes a first parallel - wire portion receiving recess (510) and a second parallel - wire portion receiving recess (520) for receiving the parallel - wire portions (151, 251) of the first terminal (150) and the second terminal (250) respectively.

9. The outgoing - wire connection assembly according to any one of claims 3 to 8, wherein, The outgoing - wire connection assembly (10) further includes middle - pole plates (610, 620) axially disposed between the first frame body (110) and the second frame body (210). A plurality of axially - extending pole teeth (611, 621) are provided radially inside the middle - pole plates (610, 620). The middle - pole plates are provided with ground terminals (615, 625) extending away from the main body of the middle - pole plates at positions close to the outgoing - wire portion (190).

10. The outgoing - wire connection assembly according to claim 9, wherein, The end of the ground terminal (615, 625) extending away from the main body of the middle - pole plate is configured to be received inside the main body of the connector (500).

11. The outgoing - wire connection assembly according to claim 10, wherein, Inside the main body of the connector (500), a mating ground terminal (555) including a straight - line segment (556) is provided. The end of the ground terminal (615, 625) extending away from the main body of the middle - pole plate is harpoon - shaped to be attached to the straight - line segment (556) of the mating ground terminal (555).

12. The outgoing - wire connection assembly according to claim 10, wherein, The middle - pole plates (610, 620) include a first middle - pole plate (610) adjacently arranged to the first frame body (110) and a second middle - pole plate (620) adjacently arranged to the second frame body (210). The ground terminal (615) of the first middle - pole plate (610) defines a first ground terminal (615), and the ground terminal (625) of the second middle - pole plate (620) defines a second ground terminal (625). The first ground terminal (615) and the second ground terminal (625) are arranged at opposite circumferential sides of the outgoing - wire portion (190), The connector (500) is provided with one said mating ground terminal (555), and the mating ground terminal (555) is configured to be attached to one of the first ground terminal (615) and the second ground terminal (625).

13. A stepping motor, comprising the outgoing - wire connection assembly (10) according to any one of claims 3 to 12.

14. The stepping motor according to claim 13, further comprising a first housing (810) and a second housing (820), wherein, The first housing (810) and the second housing (820) are respectively disposed on one side of the first coil frame (100) and one side of the second coil frame (200) and jointly surround the coil - frame assembly (180). The connector (500) includes a connector housing (505). The connector housing (505) is provided with a first card slot (530) opening towards the first coil frame (100) and a second card slot (540) opening towards the second coil frame (200). An edge segment (811) of the first outer housing (810) is received in the first card slot (530), and an edge segment (821) of the second outer housing (820) is received in the second card slot (540), so that the first outer housing (810), the second outer housing (820) and the connector housing are assembled with each other.

15. The stepping motor according to claim 13 further includes a first magnetic ring (710), a second magnetic ring (720), a bearing (730), a nut component (740) and a screw component (750). The first magnetic ring (710) and the second magnetic ring (720) are respectively arranged radially inside the first coil frame (100) and the second coil frame (200). The bearing (730) is arranged axially between the first magnetic ring (710) and the second magnetic ring (720). An outer ring (731) of the bearing (730) is fixed relative to the first coil frame (100) and the second coil frame (200), and an inner ring (732) of the bearing (730) is fixed relative to the first magnetic ring (710) and the second magnetic ring (720). The nut component (740) is fixed relative to the inner ring (732) of the bearing, and the screw component (750) is threadedly connected to the nut component (740). Among them, The nut component (740) and the inner ring (732) of the bearing are manufactured by integral injection molding.

16. A lighting adjustment device includes the stepping motor according to any one of claims 13 to 15.

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