TWM575216U - Motor stator device and motor - Google Patents

Abstract

A motor stator device includes a plurality of stator iron cores, a plurality of stator terminals and a circuit board. The stator iron cores are connected with each other and constructed into a circular structure. The stator terminals are respectively assembled to the stator iron cores. The circuit board has a first surface, a second surface opposite to the first surface and a plurality of through holes penetrating the first surface and the second surface. The first surface faces toward the stator iron cores. Each of the stator terminals passes through the corresponding through hole. Each of the stator terminals includes an engagement portion located outside the corresponding through hole. Each of the engagement portions extends beyond an inner wall surface of the corresponding through hole in a direction parallel to the second surface. A motor is further provided.

Description

Motor stator device and motor

The present invention relates to a stator device, and more particularly to a motor stator device and motor.

Electric motors, commonly known as motors, are widely used in various electrical appliances because they convert electrical energy into mechanical energy. In general, a motor includes a rotor assembly and a stator assembly, wherein the rotor assembly is a rotatable portion and the stator assembly is a stationary portion for energizing a magnetic field to drive the rotor assembly to rotate.

At present, a technique has been proposed in which a printed circuit board is used instead of an axial-type motor stator winding wound with a copper wire. Further, a printed circuit board is provided with a wire-out hole for the output terminal of the motor stator to be worn. Located in it. However, because the outlet hole of the printed circuit board and the outlet terminal of the motor stator do not have a matching limit design or positioning design, the printed circuit board and the motor stator are easily offset relative to each other, resulting in inaccurate welding of the outlet terminals of the motor stator. Or the printed circuit board is detached directly from the motor stator. Therefore, how to overcome the defects of the existing printed circuit board and motor stator installation process has become a key research project of related manufacturers.

The novel creation provides a motor stator device and a motor to help improve installation reliability and accuracy.

The motor stator device of the present invention comprises a plurality of stator cores, a plurality of stator terminals and a circuit board. These stator cores are connected to each other and constitute a ring structure. These stator terminals are respectively mounted to these stator cores. The circuit board has a first surface, a second surface opposite the first surface, and a plurality of through holes extending through the first surface and the second surface. The first surface faces the stator cores and each of the stator terminals passes through a corresponding through hole. Each of the stator terminals includes a hook portion located outside the corresponding through hole, and each of the hook portions extends beyond the inner wall surface of the corresponding through hole in a direction parallel to the second surface.

The motor of the present invention includes a rotor and the above-described motor stator device. Solder is filled in each of the through holes, and the solder is connected to the corresponding stator terminal. The rotor is disposed in the annular structure.

In an embodiment of the present invention, the motor stator device further includes a plurality of wire racks respectively mounted to the stator cores, and the first surface of the circuit board abuts the wire frames. Each of the wire racks is provided with two assembly holes, and two assembly holes of each wire frame are inserted into the two stator terminals.

In an embodiment of the present invention, each of the through holes is aligned with an assembly hole, and each of the assembly holes has a first hole portion and a second hole portion that communicate with each other. Each of the first holes is located between the corresponding through holes and the second holes, wherein the diameter of each of the first holes is larger than the diameter of the corresponding second hole and larger than the outer diameter of the corresponding stator terminal.

In an embodiment of the present invention, each of the stator terminals further includes a column portion connected to the hook portion, and the column portion of each of the stator terminals is inserted into an assembly hole of the corresponding wire frame and passes through Corresponding through holes.

In an embodiment of the present invention, each of the stator terminals further includes a turning portion connecting the hook portion and the column portion, and the concave arc of the turning portion of each of the stator terminals faces the corresponding stator core.

In an embodiment of the present invention, the ratio of the length of the post portion of each of the stator terminals to the length of the hook portion is between 10:1 and 5:1.

In an embodiment of the present invention, the hook portion of each of the stator terminals is inclined to the column portion, and the angle between the hook portion of each stator terminal and the column portion is between 10 degrees and 25 degrees. .

In an embodiment of the present invention, the shortest distance between the hook portion of each of the stator terminals and the second surface of the circuit board is between 0.1 and 0.3 mm.

In an embodiment of the present invention, the hook portions of each of the stator terminals and the corresponding stator cores are respectively located on opposite sides of the circuit board, and each of the hook portions extends toward the center of the annular structure.

Based on the above, each of the stator terminals of the motor stator device of the present invention is provided with a hook portion for guiding the circuit board to the stator cores. After the board is mounted to position, the board is constrained between the hook portions of the stator terminals and the stator cores to prevent the board from being detached from the stator cores. In other words, the structural design of the motor stator device created by the present invention not only helps to improve the reliability and accuracy of the installation, but also improves the installation convenience. On the other hand, a motor using the above-described motor stator device can also achieve the same or similar technical effects.

The above described features and advantages of the present invention will become more apparent and understood from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a motor stator apparatus of an embodiment of the present invention. 2A is a schematic cross-sectional view of the motor stator assembly of FIG. 1. Fig. 2B is an enlarged schematic view of a region R1 of Fig. 2A. Referring to FIG. 1 , FIG. 2A and FIG. 2B , in the embodiment, the motor stator device 100 includes a plurality of stator cores 110 , a plurality of stator terminals 120 , and a circuit board 130 , wherein the stator cores 110 are connected to each other, and The ring structure 101 is formed. Further, each of the stator cores 110 is correspondingly mounted with two stator terminals 120, wherein the stator terminals 120 are located on the same side of the annular structure 101 and are equally spaced along the circumferential direction of the annular structure 101. That is, the shortest distance between any two adjacent stator terminals 120 is equal to each other. In particular, the shortest distance between any two adjacent stator terminals 120 is not limited to being equal to each other, and can be adjusted according to actual design requirements.

The circuit board 130 can be a printed circuit board and has a first surface 131, a second surface 132 relative to the first surface 131, and a plurality of through holes 133 extending through the first surface 131 and the second surface 132. The circuit board 130 faces the stator cores 110 with its first surface 131. On the other hand, the number of the through holes 133 is equal to the number of the stator terminals 120, and the arrangement of the through holes 133 is matched with the arrangement of the stator terminals 120. Therefore, in the process of mounting the circuit board 130 to the stator cores 110, the through holes 133 of the circuit board 130 are first aligned with the stator terminals 120, respectively, and the circuit board 130 is moved closer to the stator cores 110.

Following the above, each of the stator terminals 120 includes a hook portion 121. After the circuit board 130 is mounted and positioned, the hook portion 121 of each of the stator terminals 120 passes through the through hole 133 to which it is aligned. At this time, the hook portion 121 of each of the stator terminals 120 is located outside the corresponding through hole 133 and extends beyond the second surface 132 of the circuit board 130. In this embodiment, the hook portion 121 of each of the stator terminals 120 extends toward the center C of the annular structure 101, and the projection range of the hook portion 121 corresponding to the circuit board 130 at least partially falls outside the through hole 133. The design prevents the circuit board 130 after the installation from reaching the positioning from being detached from the stator cores 110.

Further, each of the stator terminals 120 further includes a column portion 122 connected to the hook portion 121, and the column portion 122 of each of the stator terminals 120 passes through the corresponding through hole 133. As shown in FIG. 2B, the distance D1 between the center of the column portion 122 of each of the stator terminals 120 and the outer edge of the hook portion 121 closest to the center C of the annular structure 101 is greater than the diameter D2 of the corresponding through hole 133. One of the points. Therefore, if each of the stator terminals 120 passes through the center of the corresponding through hole 133, the hook portion 121 of each of the stator terminals 120 extending toward the center C of the ring structure 101 in the direction DR parallel to the second surface 132 The inner wall surface 133a extends beyond the corresponding through hole 133. At this time, the hook portion 121 of each of the stator terminals 120 blocks the path of the circuit board 130 moving in the direction DR1 perpendicular to the first surface 131 or the second surface 132. When the circuit board 130 moves away from the stator cores 110 in a direction DR1 perpendicular to the first surface 131 or the second surface 132, the second surface 132 of the circuit board 130 is generated with the hook portions 121 of the stator terminals 120. The structure interferes so that it cannot be easily detached from these stator cores 110.

On the other hand, based on the arrangement of the stator terminals 120 on the annular structure 101, the extending direction of the hook portions 121, and the dimensional design of the stator terminals 120, etc., even if the circuit board 130 is parallel to the first surface 131 or the The direction DR of the two surfaces 132 is offset with respect to the stator cores 110, so that the position of each of the stator terminals 120 in the corresponding through holes 133 does not fall in the center of the corresponding through hole 133, and there is still at least a part of the stator. The hook portion 121 of the terminal 120 blocks the path of the circuit board 130 moving in a direction DR1 perpendicular to the first surface 131 or the second surface 132. When the circuit board 130 moves away from the stator cores 110 in a direction DR1 perpendicular to the first surface 131 or the second surface 132, the second surface 132 of the circuit board 130 and the at least a portion of the hook portions 121 of the stator terminals 120 Structural interference is generated so that it cannot be easily detached from these stator cores 110.

Referring to FIG. 1 , FIG. 2A and FIG. 2B , in the embodiment, the motor stator device 100 further includes a plurality of wire racks 140 respectively mounted on the stator cores 110 , and the first surface 131 of the circuit board 130 abuts These bobbins 140. That is, the circuit board 130 is commonly carried by the wire racks 140. On the other hand, the wire frame 140 may be made of rubber, plastic or other suitable insulating material, so that it can be moderately deformed under stress to provide a cushioning effect. Each of the stator terminals 120 further includes a turning portion 123 connecting the hook portion 121 and the column portion 122. Each of the wire racks 140 is provided with two assembling holes 141, and two assembling holes 141 of each of the wire racks 140 are provided by any two. The stator terminals 120 are inserted therein. Further, the column portion 122 of each of the stator terminals 120 is inserted into the corresponding assembly hole 141, and the column portion 122 extends outward from the assembly hole 141, and is extended by the turning portion 123 and the hook portion 121 after extending a certain length. Turning toward the corresponding wire frame 140, wherein the concave arc of each of the turning portions 123 faces the corresponding wire frame 140 and the stator core 110. For example, the column portion 122 of each of the stator terminals 120 is perpendicular to the surface of the corresponding wire frame 140 that is in contact with the circuit board 130, and the hook portion 121 is inclined to the surface of the corresponding wire frame 140 that is in contact with the circuit board 130. In other words, the hook portion 121 of each of the stator terminals 120 is inclined to the column portion 122, and the angle α between the two is between 10 degrees and 25 degrees, or the angle α is equal to or greater than 10 degrees and less than or equal to 25 degree. In an embodiment, the angle α between the hook portion 121 and the post portion 122 is between 14 degrees and 16 degrees.

In the process of mounting the circuit board 130 to the wire racks 140, the through holes 133 of the circuit board 130 are first aligned with the stator terminals 120, respectively, and the circuit board 130 is moved closer to the wire frames 140. In the process of moving the circuit board 130 closer to the wire racks 140, the blocks in the circuit board 130 adjacent to the through holes 133 abut the hook portions 121 of the stator terminals 120, and the pillar portions 122 of the stator terminals 120 are The turning portions 123 have been moved into the through holes 133, respectively. In other words, the structural design of the hook portions 121 of the stator terminals 120 inclined to the post portion 122 can be used to guide and position the circuit board 130 to facilitate subsequent mounting steps.

Next, the circuit boards 130 that have been abutted against the hook portions 121 of the stator terminals 120 are moved closer to the wire frames 140. In the process, the hook portions 121 of the stator terminals 120 are pressed by the circuit board 130. The elastic deformation occurs, and the hook portions 121 of the stator terminals 120 elastically return to the original shape after being removed from the through holes 133 to restrict the movement of the circuit board 130 away from the wire frames 140. In the present embodiment, each of the through holes 133 of the circuit board 130 is aligned with an assembly hole 141, and each of the assembly holes 141 has a first hole portion 141a and a second hole portion 141b that communicate with each other. Each of the first hole portions 141a is located between the corresponding through holes 133 and the second hole portions 141b, wherein the diameter of each of the first holes 141a is larger than the diameter of the corresponding second hole portion 141b and larger than the corresponding stator terminal 120. The outer diameter of the column portion 122. Therefore, when the stator terminals 120 are pressed by the circuit board 130, the first hole portions 141a respectively provide movement or buffer spaces when the column portions 122 of the stator terminals 120 are elastically deformed. On the other hand, the pillar portions 122 of the stator terminals 120 may be square pillars, and the second hole portions 141b of the assembly holes 141 may be square holes, but the novel creation is not limited thereto.

In this embodiment, the ratio of the length L1 of the column portion 122 of each of the stator terminals 120 to the length L2 of the hook portion 121 is between 10:1 and 5:1, wherein the length L1 is from the column portion 122 and the transition. The junction of the portion 123 is calculated to the end of the column portion 122, and the length L2 is calculated from the boundary between the hook portion 121 and the turning portion 123 to the end of the hook portion 121.

Further, each of the column portions 122 may define a first portion 122a of the first hole portion 141a interposed in the corresponding assembly hole 141 and a second portion 122b interposed in the second hole portion 141b, wherein the second portion 122b The length is greater than the first portion 122a, thereby increasing the degree of stability of each of the stator terminals 120 mounted to the corresponding stator core 110. The first portion 122a of each of the column portions 122 and the third portion 122c located outside the corresponding assembly hole 141 can be regarded as the effective force arm of the stator terminal 120. In the case where the effective force arm is long, the process of mounting the circuit board 130 can be performed. It can be labor intensive and ensure that each stator terminal 120 that is pressed by the circuit board 130 produces moderate elastic deformation.

After the circuit board 130 is mounted and positioned, the circuit board 130 at this time abuts the wire racks 140 with their first surfaces 131, and between the hook portions 121 of each of the stator terminals 120 and the second surface 132 of the circuit board 130. The shortest distance D3 is between 0.1 and 0.3 mm to limit the movement of the circuit board 130 away from the stator cores 110.

Whether configured for manual or automated installation, the stator terminals 120 are structurally designed to ensure that the circuit board 130 is securely mounted to the location, and after the circuit board 130 is mounted to the stator cores 110, the hook portions 121 of the stator terminals 120 The circuit board 130 can be prevented from being detached from the stator cores 110, thereby contributing to improved mounting reliability and accuracy. In addition, the respective lengths of the column portion 122 and the hook portion 121 of the stator terminal 120 and the angle between the two can be designed according to the difference in the size of the motor, the thickness of the circuit board 130, the size of the through hole 133 of the circuit board 130, and the shortest distance D3. The adjustment is as long as the stator terminal 120 can be used for the limit when the circuit board 130 is assembled, and the creation of the present invention is not particularly limited.

3 is a schematic view of a motor of an embodiment of the present invention. 4A is a schematic cross-sectional view of the motor of FIG. 3. 4B is an enlarged schematic view of a region R2 of FIG. 4A. Referring to FIG. 3, FIG. 4A and FIG. 4B, and referring to FIG. 2A and FIG. 2B, after the circuit board 130 is mounted and positioned, the solder 20 is filled in the through holes 133, and the solder 20 is connected to the corresponding stator terminal 120. . For example, the solder 20 fills the through holes 133 and covers and fixes the pillar portions 122 of the stator terminals 120 passing through the through holes 133. At this time, the relative positions of the circuit board 130, the wire racks 140, and the stator cores 110 are fixed, wherein each of the wire frames 140 and the stator core 110 are wound around a coil, and the two terminals of the coil are respectively connected to The two stator terminals 120 of the wire frame 140 are inserted, so that the two stator terminals 120 and the coils can be electrically connected to the circuit board 130 through the solder 20 . In other embodiments, the solder may extend beyond the through holes of the board and may or may not contact the hook portions of the stator terminals.

In the present embodiment, the motor 10 employs a motor stator device 100, and the solder 20 has been formed in the through holes 133 of the circuit board 130. On the other hand, the rotor 30 of the motor 10 is disposed in the annular structure 101 of the motor stator device 100 to be rotated by the driving of the stator cores 110. Further, the motor stator device 100 and the rotor 30 are disposed in the casing 40, wherein the output shaft 31 of the rotor 30 extends out of the casing 40, and the rotor 30 is coupled to the carrier 60 of the casing 40 through the bearing assembly 50. In order to maintain the degree of freedom of movement with respect to the rotation of the motor stator device 100 and the casing 40.

In summary, each of the stator terminals of the motor stator device of the present invention is provided with a hook portion for guiding the circuit board to the stator cores. After the board is mounted to position, the board is constrained between the hook portions of the stator terminals and the stator cores to prevent the board from being detached from the stator cores. In other words, the structural design of the motor stator device created by the present invention not only helps to improve the reliability and accuracy of the installation, but also improves the installation convenience. On the other hand, a motor using the above-described motor stator device can also achieve the same or similar technical effects.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the novel creation, and any person skilled in the art can make some changes without departing from the spirit and scope of the novel creation. Retouching, the scope of protection of this new creation is subject to the definition of the scope of the patent application attached.

10‧‧‧ motor

20‧‧‧ solder

30‧‧‧Rotor

31‧‧‧ Output shaft

40‧‧‧Shell

50‧‧‧ bearing set

60‧‧‧Hosting

100‧‧‧Motor stator device

101‧‧‧ ring structure

110‧‧‧Standard core

120‧‧‧Stator terminals

121‧‧‧K hook section

122‧‧‧ Column Department

122a‧‧‧Part 1

122b‧‧‧Part II

122c‧‧‧Part III

123‧‧‧ turning section

130‧‧‧ boards

131‧‧‧ first surface

132‧‧‧ second surface

133‧‧‧through holes

133‧‧‧ inner wall

140‧‧‧Wire rack

141‧‧‧Assembled holes

141a‧‧‧First hole

141b‧‧‧ second hole

D1‧‧‧ distance

D2‧‧‧ aperture

D3‧‧‧ shortest distance

DR, DR1‧‧‧ direction

L1, L2‧‧‧ length

R1, R2‧‧‧ area

‧‧‧‧ angle

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a motor stator apparatus of an embodiment of the present invention. 2A is a schematic cross-sectional view of the motor stator assembly of FIG. 1. Fig. 2B is an enlarged schematic view of a region R1 of Fig. 2A. 3 is a schematic view of a motor of an embodiment of the present invention. 4A is a schematic cross-sectional view of the motor of FIG. 3. 4B is an enlarged schematic view of a region R2 of FIG. 4A.

Claims (10)

A motor stator device comprising: a plurality of stator cores connected to each other and forming an annular structure; a plurality of stator terminals respectively mounted to the stator cores; and a circuit board having a first surface opposite to the first surface a second surface and a plurality of through holes penetrating the first surface and the second surface, wherein the first surface faces the stator cores, and each of the stator terminals passes through the corresponding through hole, each of the stators The terminal includes a hook portion located outside the corresponding through hole, and each of the hook portions extends beyond the corresponding inner wall surface of the through hole in a direction parallel to the second surface. The motor stator device of claim 1, further comprising a plurality of wire racks respectively mounted on the stator cores, and the first surface of the circuit board abuts the wire racks, wherein each of the wires The wire rack is provided with two assembly holes, and the two assembly holes of each of the wire frames are inserted into the second stator terminal. The motor stator device of claim 2, wherein each of the through holes is aligned with the assembly hole, and each of the assembly holes has a first hole portion and a second hole portion that communicate with each other. The first hole portion is located between the corresponding through hole and the second hole portion, wherein an aperture of each of the first holes portion is larger than a corresponding aperture of the second hole portion and larger than a corresponding outer diameter of the stator terminal . The motor stator device of claim 2, wherein each of the stator terminals further includes a column portion connected to the hook portion, and the column portion of each of the stator terminals is inserted into the corresponding wire frame One of the assembly holes is passed through the corresponding through hole. The motor stator device of claim 4, wherein each of the stator terminals further includes a turning portion connecting the hook portion and the column portion, and a concave arc orientation of the turning portion of each of the stator terminals is corresponding to The stator core. The motor stator device of claim 4, wherein a ratio of a length of the post portion of each of the stator terminals to a length of the hook portion is between 10:1 and 5:1. The motor stator device of claim 4, wherein the hook portion of each of the stator terminals is inclined to the column portion, and an angle between the hook portion of each of the stator terminals and the column portion is Between 10 degrees and 25 degrees. The motor stator device of claim 1, wherein a shortest distance between the hook portion of each of the stator terminals and the second surface of the circuit board is between 0.1 and 0.3 mm. The motor stator device of claim 1, wherein the hook portion of each of the stator terminals and the corresponding stator core are respectively located on opposite sides of the circuit board, and each of the hook portions is oriented The center of the annular structure extends. A motor comprising: the motor stator device according to any one of claims 1 to 9, wherein each of the through holes has a solder filled therein, the solder is connected to the corresponding stator terminal; and the rotor , set in the ring structure.