TWM574782U - Stator unit and motor - Google Patents

Abstract

A stator unit and a motor are provided. The stator unit includes a stator core, a first bobbin and a second bobbin. The first bobbin and the second bobbin are respectively disposed on the first end surface and the second end surface opposite to the first end surface of the stator core. The first bobbin includes an inner support, an outer support and a winding portion. The inner support includes an upper surface and an engaging portion. The upper surface of the inner support faces away from the first end surface of the stator core. The engaging portion protrudes above the upper surface of the inner support. The winding portion is connected between the inner support and the outer support. The outer support, the inner support and the winding portion defines a winding space.

Description

Stator unit and motor

The present invention relates to a stator unit and a motor, and more particularly to a stator unit and a motor capable of realizing line automation.

The motor converts electrical energy into mechanical energy and is widely used in a variety of applications such as lathes, transmissions, and robots. Generally, the motor includes a stator structure and a rotor structure. A coil is wound around the stator structure, and once a current is passed through the coil, a magnetic field is generated around the coil, thereby driving the rotor structure to rotate.

The coils on the stator structure are typically connected to a circuit board that provides timing voltage to the coils of the stator structure to control the rotor structure. At present, the common circuit board assembly method is to manually assemble and hold the circuit board on the stator structure, and then use the solder to electrically connect the coil on the stator structure to the circuit board. However, assembly in this manner is time consuming, labor intensive, and tends to cause inaccurate alignment between the stator structure and the board.

This creation is about a stator unit and a motor. The stator unit includes a latching portion that can be configured to assist in the restraint and positioning of the circuit board during motor assembly, thereby realizing automation of the production line and achieving mass production.

According to one aspect of the present invention, a stator unit is proposed. The stator unit includes a stator core, a first wire frame, and a second wire frame. The stator core includes a first end surface and a second end surface opposite to each other. The first wire frame is disposed on the first end surface of the stator core, and the second wire frame is disposed on the second end surface of the stator core. The first wire frame includes an inner stop portion, an outer stop portion and a winding portion. The inner blocking portion includes an upper surface of the inner blocking portion and an engaging portion, and the engaging portion protrudes from the upper surface of the inner blocking portion. The winding portion is connected between the inner blocking portion and the outer blocking portion, and the outer blocking portion, the inner blocking portion and the winding portion define a winding space.

According to another aspect of the present invention, a motor is proposed. The motor includes a sub-assembly structure, a circuit board, and a rotor structure. The stator assembly structure includes at least two stator units, each of which includes a first end surface and a second end surface opposite to each other. The first wire frame is disposed on the first end surface of the stator core, and the second wire frame is disposed on the second end surface of the stator core. The first wire frame includes an inner stop portion, an outer stop portion and a winding portion. The inner blocking portion includes an upper surface of the inner blocking portion and an engaging portion, and the engaging portion protrudes from the upper surface of the inner blocking portion. The outer block includes an upper surface of the outer block. The winding portion is connected between the inner blocking portion and the outer blocking portion, and the outer blocking portion, the inner blocking portion and the winding portion define a winding space. The circuit board is disposed on the upper surface of the inner block and the upper surface of the outer block, and the engaging portion is engaged with the circuit board. The rotor structure is disposed in a surrounding space formed by the stator assembly structure.

In order to better understand the above and other aspects of the present invention, the following specific embodiments are described in detail below with reference to the accompanying drawings:

This creation is about a stator unit and a motor. The stator unit includes a latching portion, which is used for positioning and limiting when the circuit board is assembled, thereby realizing automation of the production line and achieving mass production.

It should be noted that this creation does not show all possible embodiments, and other implementations not proposed by this creation may also be applicable. Furthermore, the dimensional ratios on the drawings are not drawn in proportion to the actual product. Therefore, the description and illustration are for illustrative purposes only and are not intended to be limiting. In addition, the description in the embodiments, such as the detailed structure, the process steps, the material application, and the like, are for illustrative purposes only and are not intended to limit the scope of the present invention. The details of the steps and the structure of the embodiments may be varied and modified as needed in accordance with the actual application process without departing from the spirit and scope of the present invention. The same/similar symbols are used to describe the same/similar elements.

FIG. 1 is an exploded view of the motor 1 of an embodiment of the present invention. Referring to FIG. 1, the motor 1 includes a sub-assembly structure 40, a circuit board 50, and a rotor structure 30. The stator assembly structure 40 includes at least two stator units 400. In this embodiment, the stator assembly structure 40 includes a total of twelve stator units 400, but the present invention is not limited thereto, and the number of the stator units 400 can be determined according to design requirements. The circuit board 50 is disposed on the stator assembly structure 40 and has an opening 51 at the center thereof. The rotor structure 30 passes through the opening 51 of the circuit board 50 and is disposed in the surrounding space formed by the stator assembly structure 40. The circuit board 50 is further electrically coupled to the coil of each of the stator units 400 to pass current through the coils, thereby generating a magnetic field that drives the rotation of the rotor structure 30.

The motor 1 further includes a first bearing fixture 10, a first bearing 20, a housing 60, a second bearing 70, a second bearing fixture 80, and an outer cover 90. The stator assembly structure 40 and the circuit board 50 are both disposed in the hollow receiving groove chamber formed by the housing 60. The rotor structure 30 can include a rotating shaft 31, and the first bearing 20 and the second bearing 70 are respectively sleeved on both ends of the rotating shaft 31 to support the rotor structure 30. The first bearing 20 is disposed in the first bearing fixture 10 and the second bearing 70 is disposed in the second bearing fixture 80. The first bearing fixture 10 and the second bearing fixture 80 are respectively disposed at both ends of the housing 60. The outer cover 90 is disposed on the second bearing fixture 80 and closes one end of the housing 60. The shaft 31 of the rotor structure 30 is then exposed by the other end of the housing 60 to drive the components to be driven as the rotor structure 30 rotates.

FIG. 2 is a perspective view of a stator unit 400 according to an embodiment of the present invention. Referring to FIGS. 1 and 2 , each stator unit 400 includes a winding unit 100 , a coil 200 , and two pins 300 . The coil 200 is wound around the winding unit 100, and the two ends of the coil 200 are electrically connected to the two pins 300 respectively, so that the coil 200 can be coupled to the circuit board 50. Both ends of the coil 200 are, for example, respectively contacted with corresponding pins 300, and are then wound or fixed to the pins 300.

FIG. 3 is an exploded view of the winding unit 100 of an embodiment of the present invention. Referring to FIG. 3 , the winding unit 100 includes a certain sub-core 130 , a first bobbin 110 , and a second bobbin 120 .

The stator core 130 includes a first end surface 130S1 and a second end surface 130S2 opposite to each other. The first wire frame 110 is disposed on the first end surface 130S1 of the stator core 130, and the second wire frame 120 is disposed on the second end surface 130S2 of the stator core 130. In one embodiment, the first bobbin 110 and the second bobbin 120 are respectively sleeved on both ends of the stator core 130. The first wire frame 110 and the second wire frame 120 are, for example, insulated wire frames, which are made of plastic, but are not limited thereto.

In an embodiment, the stator core 130 may include two inner recesses 130R opposite to each other, and the inner recess 130R is located between the first end surface 130S1 and the second end surface 130S2 of the stator core 130. The winding unit 100 may further include two flexible insulating sheets 140. The two flexible insulating sheets 140 are respectively disposed on one side of the two concave portions 130R, and each of the flexible insulating sheets 140 further includes a bent portion 141 matching the surface shape of the inner concave portion 130R to cover the inner concave portion 130R. surface. In addition, the bent portion 141 further defines a hollow space 140H. After the two flexible insulating sheets 140 are respectively disposed on the two concave portions 130R, the first wire frame 110 and the second wire frame 120 are respectively disposed on the first end surface 130S1 and the second end surface 130S2 of the stator core 130. Thus, the first bobbin 110 and the second bobbin 120 extend in the hollow space 140H of the two flexible insulating sheets 140, and the bent portions 141 of the two flexible insulating sheets 140 are fixed to the stator core 130. Two recesses 130R are provided. As shown in FIGS. 2 and 3, the coil 200 is, for example, a winding space 113S of the first bobbin 110 via the hollow space 140H on the stator core 130 side to the winding space 123S of the second bobbin 120, and then The hollow space 140H on the other side of the stator core 130 is wound around the winding space 113S of the first wire rack 110.

FIG. 4A is an exploded view of the stator assembly structure 40 and the circuit board 50 of an embodiment of the present invention. Fig. 4B is an enlarged view of a region E1 of Fig. 4A. FIG. 4C is a combination diagram of the stator assembly structure 40 and the circuit board 50 of FIG. 4A. Fig. 4D is an enlarged view of a region E2 of Fig. 4C. Fig. 4E is a cross-sectional view taken along line 4E-4E' in Fig. 4D.

Referring to FIG. 2, FIG. 3, FIG. 4A, and FIG. 4C, the first bobbin 110 can include two interfaces 112H. The two pins 300 are respectively inserted into the two interfaces 112H and electrically connected to the coil 200. . The circuit board 50 is disposed on the stator assembly structure 40. In more detail, the circuit board 50 is disposed on the first bobbin 110, and the circuit board 50 has a plurality of openings 50H corresponding to the number of the pins 300. When the circuit board 50 is disposed on the first wire frame 110, the pin 300 and the two ends of the coil 200 electrically connected to the pin 300 can pass through the corresponding opening 50H. Thereafter, solder can be filled in the opening 50H to solder the circuit board 50 to the stator assembly structure 40, and the coil 200 on the stator unit 400 is electrically connected to the circuit board 50.

In the present creation, the assembly of the motor 1 described above can be achieved via a line automation device. That is, the circuit board 50 can be gripped by the robot arm and placed on the stator assembly structure 40 in an assembly direction DR1. Then, the combined structure of the stator assembly structure 40 and the circuit board 50 can be clamped to the next station for welding by the robot arm. In the process of clamping the combined structure of the stator assembly structure 40 and the circuit board 50 to the next station by the robot arm, in order to prevent the circuit board 50 from falling off or generating displacement during the clamping process, thereby affecting the quality of the subsequent welding, each The stator unit 400 includes a latching portion 114 for achieving the displacement restraint and positioning of the circuit board 50 prior to the soldering step, without the use of additional equipment, labor, or fixtures to maintain the circuit board 50 and the stator assembly structure 40. Positioning between.

FIG. 5A is a perspective view showing the first wire frame 110 of an embodiment of the present invention in a first perspective view. FIG. 5B is a perspective view showing the first wire frame 110 of an embodiment of the present invention in a second perspective view. FIG. 5C is a perspective view showing the first wire frame 110 of an embodiment of the present invention in a third perspective view. 6A, 6B, 6C, and 6D are plan views of the first wire frame 110 of an embodiment of the present invention, respectively, in the above view, front view, side view, and rear view. The following will use these drawings to further explain the assembly relationship of the circuit board 50 in FIGS. 4A to 4E.

Referring to FIG. 5A, FIG. 5B and FIG. 5C simultaneously, the first bobbin 110 includes an inner stop portion 111, an outer stop portion 112 and a winding portion 113. The winding portion 113 is connected between the inner blocking portion 111 and the outer blocking portion 112, and the outer blocking portion 112, the inner blocking portion 111 and the winding portion 113 define a winding space 113S for the coil 200 (shown in the second Figure) Winding here.

The inner stop portion 111 includes an inner stop upper surface 111b, and the outer stop portion 112 includes an outer stop upper surface 112b. As shown in FIG. 3, in the winding unit 100 of the stator unit 400, the inner stopper upper surface 111b and the outer stopper upper surface 112b are opposed to the first end surface 130S1 of the stator core 130. In FIG. 4C, when the circuit board 50 is disposed on the stator assembly 40, the circuit board 50 is supported on the inner upper surface 111b and the outer upper surface 112b.

Referring to FIG. 5A and FIG. 5B , in the present invention, the inner stop portion 111 further includes an engaging portion 114 , and the engaging portion 114 protrudes from the inner block upper surface 111 b . Thus, when the circuit board 50 is supported on the inner upper surface 111b and the outer upper surface 112b, the engaging portion 114 can engage or fix the circuit board 50 to prevent the circuit board 50 from falling off before the soldering step is performed or Displacement is generated to achieve the displacement constraint and positioning of the circuit board 50.

In an embodiment, the engaging portion 114 may be in the form of a hook structure, but the present invention is not limited thereto. The engaging portion 114 can include a resilient arm 115 and a hook 116 that are connected to each other. As shown in FIGS. 4C and 4D, when the circuit board 50 is disposed on the stator assembly 40, the hook 116 can be hooked on the edge of the opening 51 of the circuit board 50 to prevent the circuit board 50 from being transferred during transmission. It falls off toward a decomposition direction DR2.

Referring to FIG. 6C, in an embodiment, the hook 116 can include a slope 116S. In the process in which the circuit board 50 of FIG. 4A is disposed on the stator assembly structure 40 along the assembly direction DR1, the edge of the opening 51 of the circuit board 50 can be pushed against the slope 116S. Through the guiding of the inclined surface 116S, the circuit board 50 can be easily assembled on the stator assembly structure 40 without damaging the structure of the hook 116. In one embodiment, the angle between the slope 116S and the normal to the upper surface 111b of the inner stop is θ , and θ is consistent with: θ ≤ 45 degrees. In one embodiment, 15 degrees ≤ θ ≤ 30 degrees, and θ is, for example, 30 degrees. In this way, the circuit board 50 can be assembled to the stator assembly structure 40 in a relatively labor-saving manner.

Referring to FIGS. 5A, 5C, and 6B, the inner portion 111 may have a recess 111R recessed in the inner surface 111b of the inner portion and form a bottom surface 111R1. The elastic arm 115 is integrally connected to the bottom surface 111R1.

Referring to FIGS. 5A, 5C, and 6A, the inner portion 111 may further include an inner surface 111S2 and an outer surface 111S1 opposite to each other. The outer surface 111S1 is coupled to the winding portion 113, the inner surface 111S2 and the outer surface. The surface 111S1 is connected to the inner surface upper surface 111b. The inner surface 111S2 may have an arc shape, and the outer surface 111S1 may have a planar shape. In one embodiment, the groove 111R can penetrate the inner surface 111S2 and the outer surface 111S1 such that the groove 111R has two side faces 111R2 opposite to each other, and the two side faces 111R2 are respectively connected to the bottom face 111R1.

In one embodiment, the resilient arms 115 are spaced from the outer surface 111S1 of the inner stop 111 by a distance D1, and D1 conforms to: 0.3 mm ≤ D1 ≤ 0.5 mm to free up sufficient space for the circuit board 50 to be assembled.

Correspondingly, referring to FIG. 4A and FIG. 4B , the circuit board 50 can further have at least two notches 53 , each of which corresponds to an engaging portion 114 . In one embodiment, the notches 53 each correspond to a pair of hooks 116 and resilient arms 115, respectively. The notch 53 is recessed on the inner edge surface 52 of the circuit board 50 and forms a notched surface 531. Here, the notch surface 531 may be planar. Since the inner edge surface 52 of the circuit board 50 has an arc shape, and the surface of the elastic arm 115 is planar, the arrangement of the through hole 53, the notch surface 531, and the distance D1 can be disposed on the stator assembly in the assembly direction DR1 along the circuit board 50. In the process on the structure 40, the effect of giving way is provided to avoid affecting the circuit wiring and the like on the circuit board 50.

Referring to FIG. 4C, FIG. 4D and FIG. 4E, when the circuit board 50 is disposed on the stator assembly 40, the elastic arm 115 is located in the corresponding notch 53, and the hook 116 is buckled in the corresponding notch 53 to The circuit board 50 is fixed to prevent the circuit board 50 from falling off toward the disassembly direction DR2 during the transfer.

In an embodiment, each of the elastic arms 115 and the corresponding notch surface 531 may be spaced apart by a uniform gap D5, and D5 conforms to: 0.1 mm ≤ D5 ≤ 0.3 mm, for example, 0.2 mm, so as not to affect the alignment of the circuit board 50. Precision.

In addition, since the elastic arm 115 is received in the corresponding notch 53, during the process of clamping the combined structure of the stator assembly 40 and the circuit board 50 to the next station, the rotation of the circuit board 50 can be avoided. Affect the quality of subsequent solder.

Referring to FIG. 6A, FIG. 6B, FIG. 6C and FIG. 6D, in an embodiment, the elastic arm 115 is further spaced from the two sides 111R2 of the groove 111R by a distance D2, and the D2 is: 0.4 mm ≤ D2 ≤ 1.0. Millimeter. The distance between the elastic arm 115 and the hook 116 protruding beyond the upper surface 111b of the inner block is D3, and D3 is: 2.5 mm ≤ D3 ≤ 3.2 mm. The groove 111R is recessed to a depth D4, and D4 conforms to: 2.0 mm ≤ D4 ≤ 3.0 mm. The thickness of the elastic arm 115 is T1, and T1 conforms to: 0.4 mm ≤ T1 ≤ 0.8 mm. The width of the elastic arm 115 is W1, and W1 conforms to: 0.8 mm ≤ W1 ≤ 1.0 mm. Thereby, the life of the mold can be further extended, and the elastic arm 115 can be sufficiently elastic, so that the elastic arm 115 is not broken during the process of the circuit board 50 being disposed on the stator assembly 40 in the assembly direction DR1.

On the other hand, in order to compensate for the disadvantage that the structural strength of the inner stop portion 111 may be lowered due to the formation of the recess 111R, as shown in FIG. 5B, the elastic arm 115 extends further away from the hook 116 in the direction of the inner stop portion 111. The inner surface 111S2 has a resilient arm 115 having a rib 117 on the inner surface 111S2. Thereby, the structural strength of the inner stopper portion 111 can be increased to prevent the inner stopper portion 111 from being warped during the winding process. In an embodiment, the rib 117 has a thickness T2 and T2 conforms to: 0.3 mm ≤ T2 ≤ 0.5 mm. The elastic arm 115, the hook 116, and the rib 117 are integrally formed with the inner stopper portion 111, for example, to complement the structural strength of the inner stopper portion 111.

In summary, although the present invention has been disclosed above by way of example, it is not intended to limit the present invention. Those of ordinary skill in the art to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this new type is subject to the definition of the scope of the patent application.

1‧‧‧Motor

10‧‧‧First bearing fixture

100‧‧‧winding unit

110‧‧‧First line frame

111‧‧‧Internal section

111b‧‧‧ upper surface of the inner block

111R‧‧‧ Groove

111R1‧‧‧ bottom

111R2‧‧‧ side

111S1‧‧‧ outer surface

111S2‧‧‧ inner surface

112‧‧‧Extraport

112b‧‧‧ Upper surface of the outer block

112H‧‧‧ interface

113‧‧‧Winding Department

113S, 123S‧‧‧ winding space

114‧‧‧Clock Department

115‧‧‧Flexible arm

116‧‧‧ hook

116S‧‧‧ Bevel

117‧‧‧ ribs

120‧‧‧second wire frame

130‧‧‧stator core

130R‧‧‧ recess

130S1‧‧‧ first end face

130S2‧‧‧second end face

140‧‧‧Flexible insulating sheet

140H‧‧‧ hollow space

141‧‧‧Bend

20‧‧‧First bearing

200‧‧‧ coil

30‧‧‧Rotor structure

300‧‧‧ feet

31‧‧‧ shaft

40‧‧‧ Stator assembly structure

400‧‧‧stator unit

50‧‧‧ boards

50H‧‧‧ opening

51‧‧‧ openings

52‧‧‧ inner edge surface

53‧‧‧ gap

531‧‧‧ notched surface

60‧‧‧shell

70‧‧‧second bearing

80‧‧‧Second bearing fixture

90‧‧‧ Cover

D1‧‧‧Distance between the elastic arm and the outer surface of the inner stop

D2‧‧‧Distance between the elastic arms and the two sides of the groove

D3‧‧‧The distance between the elastic arm and the hook protruding beyond the upper surface of the inner stop

D4‧‧‧ Depth of groove depression

D5‧‧‧Gap between the elastic arm and the notched surface

E1, E2‧‧‧ area

T1‧‧‧ thickness of elastic arm

Thickness of T2‧‧ ribs

W1‧‧‧Flexible arm width

θ ‧‧‧An angle between the slope and the normal to the upper surface of the inner stop

Fig. 1 is a view showing an exploded view of a motor of an embodiment of the present invention. FIG. 2 is a perspective view of a stator unit according to an embodiment of the present invention. FIG. 3 is an exploded view of the winding unit of an embodiment of the present invention. FIG. 4A is a diagram showing an exploded view of a stator assembly structure and a circuit board according to an embodiment of the present invention. Fig. 4B is an enlarged view of a region E1 of Fig. 4A. FIG. 4C is a combination diagram of the stator assembly structure and the circuit board of FIG. 4A. Fig. 4D is an enlarged view of a region E2 of Fig. 4C. Fig. 4E is a cross-sectional view taken along line 4E-4E' in Fig. 4D. FIG. 5A is a perspective view showing the first wire frame of an embodiment of the present invention in a first perspective view. FIG. 5B is a perspective view showing the first wire frame of an embodiment of the present invention in a second perspective view. FIG. 5C is a perspective view showing the first wire frame of an embodiment of the present invention in a third perspective view. FIG. 6A is a top view of the first wire frame of an embodiment of the present invention. FIG. 6B is a front view of the first wire frame of an embodiment of the present invention. Figure 6C is a side elevational view of the first bobbin of an embodiment of the present invention. Figure 6D is a rear elevational view of the first bobbin of an embodiment of the present invention.

Claims (12)

A stator unit includes: a stator core including a first end surface and a second end surface opposite to each other; a first wire frame disposed on the first end surface of the stator core, the first wire frame including An inner blocking portion includes an upper surface of the inner blocking portion and an engaging portion, the engaging portion protruding from the upper surface of the inner blocking portion; an outer blocking portion; and a winding portion connected to the inner blocking portion And the outer blocking portion, the outer blocking portion and the winding portion define a winding space; and a second wire frame is disposed on the second end surface of the stator core. The stator unit of claim 1, wherein the engaging portion comprises a resilient arm and a hook connected to each other. The stator unit of claim 2, wherein the hook comprises a slope, an angle between the slope and a normal of the upper surface of the inner stop is θ , and θ is consistent with: θ ≤ 45 degrees. The stator unit of claim 2, wherein the inner block has a recess, the recess is recessed on the upper surface of the inner block and defines a bottom surface, and the elastic arm is integrally connected to the bottom surface . The stator unit of claim 4, wherein the inner block further includes an inner surface and an outer surface opposite to each other, the outer surface being coupled to the winding portion, the inner surface and the outer surface The inner surface of the inner block is connected to the inner surface and the outer surface, so that the groove has two sides opposite to each other, and the two sides are connected to the bottom surface. The stator unit of claim 5, wherein the resilient arm extends further away from the hook to the inner surface of the inner stop such that the inner surface has a rib. The stator unit of claim 6, wherein the rib has a thickness T2 and T2 conforms to: 0.3 mm ≤ T2 ≤ 0.5 mm. The stator unit of claim 1, further comprising a coil, wherein the winding space of the first bobbin is wound around a winding space of the second bobbin via the stator core. A motor comprising: a certain sub-assembly structure comprising at least two stator units, each of the at least two stator units comprising: a stator core, including a first end face and a second end face opposite to each other; a first wire frame, set On the first end surface of the stator core, the first wire frame includes: an inner stop portion including an inner surface of the inner stop portion and an engaging portion, the engaging portion protruding from the upper surface of the inner block portion An outer blocking portion includes an upper surface of the outer blocking portion; and a winding portion connected between the inner blocking portion and the outer blocking portion, and the outer blocking portion, the inner blocking portion and the winding portion are defined a winding space; and a second wire frame disposed on the second end surface of the stator core; a circuit board disposed on the upper surface of the inner blocking portion and the upper surface of the outer blocking portion, and the engaging The portion is engaged with the circuit board; and a rotor structure is disposed in the surrounding space formed by the stator assembly structure. The motor of claim 9, wherein the engaging portion comprises a resilient arm and a hook connected to each other. The motor of claim 9, wherein the circuit board further has at least two notches, the at least two notches being recessed on an inner edge surface of the circuit board, and each corresponding to the engaging portion. The motor of claim 11, wherein the engaging portion comprises a resilient arm and a hook connected to each other, and the hook is snapped into the corresponding notch.