TWI748450B - Motor stator anti-interference structure - Google Patents

Abstract

A motor stator anti-interference structure includes: a silicon steel sheet assembly, the silicon steel sheet assembly including multiple silicon steel sheets held between an insulation support assembly; a winding assembly wound on the silicon steel sheet assembly and the insulation support assembly; and a connection member inlaid in the silicon steel sheet assembly to contact all the silicon steel sheets. All the silicon steel sheets are connected to a grounding end of a circuit board through the connection member so as to increase contact area between the connection member and the silicon steel sheet assembly. The electromagnetic interference is conducted through the connection member to the grounding end of the circuit board.

Description

Anti-interference structure of motor stator

The invention relates to the field of anti-electromagnetic interference structures, in particular to a motor stator anti-interference structure.

Traditional motors have Electro Magnetic Compatibility (EMC) issues during operation, that is, electromagnetic interference (EMI) and electromagnetic immunity (EMS) issues. That is to say, any conduction or electromagnetic field accompanied by voltage and current will reduce the performance of a device, equipment or system, or cause components or devices adjacent to the motor to suffer electromagnetic interference, which may cause the components or devices adjacent to the motor to fail to operate. normal.

In order to reduce electromagnetic interference, electronic components or conductive materials are usually added to the circuit board to reduce electromagnetic interference or increase electromagnetic tolerance. However, the addition of electronic components or conductive materials will affect the characteristics of the motor and increase the cost, and the effect is limited.

Therefore, how to solve the above-mentioned problems and deficiencies is the direction that the creators of this project and related manufacturers in this industry urgently want to study and improve.

In order to improve the above-mentioned problems, one purpose of the present invention is to increase the contact surface between the connecting piece and the silicon steel sheet group by contacting the connecting piece with each silicon steel sheet of the silicon steel sheet group, so that each silicon steel sheet is electrically connected to the circuit through the connecting piece. The grounding end of the board conducts electromagnetic interference to the grounding end of the circuit board through conduction, reducing electromagnetic interference during motor operation or increasing electromagnetic tolerance.

Another object of the present invention is that the connecting piece is embedded in the silicon steel sheet group in an embedded manner, which is easy to implement and has a simple structure and a low cost.

In order to achieve the above objective, the present invention provides an anti-interference structure for a motor stator, which includes: a circuit board; Are arranged in alignment and form a joint part together; a connecting piece is joined at the joint part to contact each silicon steel sheet, the connecting piece has a protruding end exposing the silicon steel sheet group; an insulating frame set is arranged on the silicon steel sheet The upper and lower sides of the sheet set expose the protruding end of the connecting member; a winding set is wound around the silicon steel sheet set and the insulating frame set and has a connecting end; wherein the connecting end of the winding set and the The protruding end of the connector is electrically connected to the circuit board.

The aforementioned silicon steel sheet group includes a circular portion and a plurality of pole claw portions, the pole claw portions are distributed radially outside the circular portion, and the joint portion formed by the slots is located in the circular portion.

The aforementioned silicon steel sheet group includes a circular part and a plurality of pole claw parts, the pole claw parts are distributed radially outside the circular part, and the joint part formed by the slots is located at one of the pole claw parts.

Each of the aforementioned pole claws includes a magnetic pole column and a magnetic pole surface extending radially at the end of the magnetic pole column, and the coupling portion is located on the magnetic pole surface.

The aforementioned insulating frame assembly has an upper insulating frame and a lower insulating frame, the silicon steel sheet assembly is arranged between the upper insulating frame and the lower insulating frame, and one of the upper insulating frame and the lower insulating frame is provided with an insulating frame slot The hole allows the protruding end of the connecting piece to extend and expose.

The aforementioned circuit board includes a conductive end and a grounding end, the conductive end is connected to the connecting end of the winding set, and the grounding end is connected to the protruding end of the connecting piece.

Furthermore, the present invention provides a motor stator anti-interference structure, which includes: a silicon steel sheet group, including a plurality of silicon steel sheets sandwiched between an insulating frame group; a connecting piece embedded in the silicon steel sheet group, and has a contact The contact part contacts each silicon steel sheet to increase the contact area between the silicon steel sheet group and the connecting piece. The contact portion is provided with a protruding end protruding from the silicon steel sheet group and the insulating frame group to connect a circuit board; a winding group, The silicon steel sheet group and the insulating frame group are wound and have a connecting end connected to the circuit board.

The aforementioned silicon steel sheet group includes a circular portion and a plurality of pole claw portions, the pole claw portions are distributed radially outside the circular portion, and the connecting piece is embedded in the circular portion.

The aforementioned silicon steel sheet group includes a circular portion and a plurality of pole claw portions, the pole claw portions are distributed radially outside the circular portion, and the connecting piece is embedded in one of the pole claw portions.

Each of the aforementioned pole claws includes a magnetic pole column and a magnetic pole surface extending radially at the end of the magnetic pole column, and the connecting piece is embedded in the magnetic pole surface.

Each of the aforementioned silicon steel sheets is provided with a slot, and the slots are aligned and formed together to form a joint portion for the connector to be embedded.

Furthermore, the present invention provides an anti-interference structure for a motor stator, which includes: a circuit board, including a conductive end and a grounding end; One surface of each silicon steel sheet contacts the same connector and is electrically connected to the ground terminal of the circuit board via the connector; a winding group is wound around the silicon steel sheet group and the insulating frame group and electrically connected to the circuit The conductive end of the board is used for energizing each silicon steel sheet of the silicon steel sheet group to generate excitation; wherein at least one electromagnetic interference generated after each silicon steel sheet is excited is conducted to the ground terminal of the circuit board through the connecting member.

The aforementioned silicon steel sheets are stacked and each silicon steel sheet is provided with a slot, and the slots are aligned and formed together to form a joint portion for the connecting piece to be set.

The aforementioned connector has a contact portion and a protruding end, the contact portion is arranged in the joint portion to contact the surface of each silicon steel sheet, and the protruding end extends from the contact portion to protrude the silicon steel sheet group and the insulating frame group to connect The ground terminal of the circuit board.

The aforementioned silicon steel sheet group includes a circular part and a plurality of pole claw parts, the pole claw parts are distributed radially outside the circular part, and the connecting piece contacts the circular part.

The aforementioned silicon steel sheet group includes a circular portion and a plurality of pole claw portions, the pole claw portions are distributed radially outside the circular portion, and the connecting piece contacts one of the pole claw portions.

Each pole claw portion of the aforementioned equal-pole claw portion includes a magnetic pole column and a magnetic pole surface extending radially at the end of the magnetic pole column, and the coupling portion contacts the magnetic pole surface.

The aforementioned insulating frame assembly has an upper insulating frame and a lower insulating frame, the silicon steel sheet assembly is located between the upper insulating frame and the lower insulating frame, and one of the upper insulating frame and the lower insulating frame is provided with an insulating frame slot The connecting piece is extended and exposed.

10: Stator

11: Silicon steel sheet group

110: Silicon steel sheet

1101: Slot

1101a: binding site

111: round part

1110: Slot

1110a: binding site

112: Pole Claw

1121: Magnetic pole

1122: magnetic pole face

1123: Magnetic pole gap

12: Connector

121: contact part

122: protruding end

13: Insulation frame group

131: upper insulating frame

132: Lower insulation frame

133, 133a: Insulation frame slot

14: Winding group

141: connection end

20: circuit board

201: Conductive terminal

202: Ground terminal

W: width

Figure 1 is the first three-dimensional exploded schematic diagram of the first embodiment of the present invention; Figure 2 is the second three-dimensional exploded schematic diagram of the first embodiment of the present invention; Figure 3 is a three-dimensional assembly schematic diagram of the first embodiment of the present invention; Figures 4A and 4B are schematic diagrams of various configurations of the connector in the first embodiment of the present invention; Figures 5 to 8 are schematic diagrams of the second embodiment of the present invention.

The above-mentioned objects and structural and functional characteristics of the present invention will be described based on the preferred embodiments of the accompanying drawings.

Please refer to Figure 1 for the first three-dimensional exploded schematic diagram of the first embodiment of the present invention; Figure 2 is the second three-dimensional exploded schematic diagram of the first embodiment of the present invention; Figure 3 is a three-dimensional assembly schematic diagram of the first embodiment of the present invention ; Figures 4A and 4B are schematic diagrams of various aspects of the connector according to the first embodiment of the present invention. As shown in the figure, the present invention includes a stator 10 and a circuit board 20. The stator 10 includes a silicon steel sheet group 11, a connecting member 12, an insulating frame group 13 and a winding group 14. The silicon steel sheet group 11 includes A plurality of silicon steel sheets 110 are stacked, and the silicon steel sheet group 11 includes a circular portion 111 and a plurality of pole claw portions 112 distributed radially outside the circular portion 111, and each pole claw portion 112 has a magnetic pole column 1121 Connecting to the outer surface of the circular portion 111, one end of the magnetic pole column 1121 radially extends a magnetic pole surface 1122, and two adjacent magnetic pole surfaces 1122 have a magnetic pole gap 1123.

The silicon steel sheet group 11 is arranged between the insulating frame groups 13. The insulating frame group 13 includes an upper insulating frame 131 and a lower insulating frame 132 respectively arranged on the upper and lower sides of the silicon steel sheet group 11 to make the The silicon steel sheet 110 is sandwiched between the upper insulation frame 131 and the lower insulation frame 132 of the insulation frame group 13, and the magnetic pole surface 1122 and part of the outer surface of the silicon steel sheet 110 are exposed.

Each of the aforementioned silicon steel sheets 110 is provided with a slot 1101, and the slots 1101 are aligned to form a joining part 1101a, such as a slot or a socket. In this embodiment, the joining part 1101a formed by the slots 1101 is arranged therein. The magnetic pole face 1122 of a pole claw 112. However, it is not limited to this, and the coupling portion 1101 a formed by the slots 1101 may also be disposed on the magnetic pole 1121 of one of the pole claw portions 112.

The winding group 14 is wound around the assembled silicon steel sheet group 11 and the insulating frame group 13. The figure shows that each pole claw portion 112 and the insulating frame group 13 are wound at the position corresponding to the pole claw portion 112, and a connection is reserved The terminal 141 is connected to the circuit board 20 (as shown in Figure 2).

The connecting member 12 is coupled to the joint portion 1101 a of the silicon steel sheet group 11. In this figure, the joint portion 1101 a is shown as an embedding groove, and the connecting member 12 is embedded in the joint portion 1101 a of the magnetic pole surface 1122. The connecting member 12 has a contact portion 121 and a protruding end 122 extending from the contact portion 121. The contact portion 121 is inserted or inserted into the joint portion 1101a to directly contact each silicon steel sheet 110, because each silicon steel sheet The surface of the slot 1101 of the 110 can directly contact the same connecting member 12, thereby increasing the contact area between the silicon steel sheet group 11 and the connecting member 12. The connecting member 12 is preferably made of conductive material such as metal. Furthermore, as shown in 4A and 4B, the contact portion 121 of the connector has a width W defined between the left and right sides, and the width W matches the depth of the concave portion of the coupling portion 1101a. The width W is, for example, a narrow width (such as Figure 4A) or a wider width (Figure 4B). The wider the width W, the more surfaces that each silicon steel sheet 110 contacts, the more effectively the electromagnetic interference can be reduced.

The aforementioned protruding end 122 protrudes from the silicon steel sheet group 11 and the insulating frame group 13 to connect to the circuit board 20. In order to enable the protruding end 122 to protrude from the insulating frame set 13, the upper insulating frame 131 and/or the lower insulating frame 132 is provided with an insulating frame slot 133 so that the protruding end 122 of the connecting member 12 passes through and is exposed. This implementation It means that the insulating frame slot 133 is provided on the upper insulating frame 131 and corresponds to the joint portion 1101a of one of the pole claw portions 112, which is exposed by the protruding end 122 of the connecting member 12, and the exposed protruding end 122 is electrically conductive Connect the circuit board 20.

The aforementioned circuit board 20 includes a conductive terminal 201 and a ground terminal 202. The conductive terminal 201 is connected to the connecting terminal 141 of the winding set 14, and the ground terminal 202 is connected to the protruding terminal 122 of the connector 12. In this way, when the circuit board 20 is energized from the conductive end 201 to the winding set 14, each silicon steel sheet 110 of the silicon steel sheet set 11 will generate an electromagnetic interference signal accompanied by excitation through the contact portion 121 of the connecting member 12. And the protruding end 122 is conducted to the ground end 202 of the circuit board 20.

Please continue to refer to Figures 5 to 8 for schematic diagrams of the second implementation of the present invention. Most of the components in this embodiment are the same as those in the previous embodiment, and the same components are denoted by the same symbols. However, the difference between this embodiment and the previous embodiment is that each silicon steel sheet 110 is provided with a slot 1110, and the slots 1110 are formed by a slot 1110. The bonding portion 1110a is located at the circular portion 111 of the silicon steel sheet group 11, and the contact portion 121 of the connecting member 12 is embedded in the bonding portion 1110a of the circular portion 111 to directly contact each silicon steel sheet 110. The insulating frame slot 133a is provided on the upper insulating frame 131 and the joint 1110a corresponding to the circular portion 111 is exposed by the protruding end 122 of the connecting member 12, and the exposed protruding end 122 is electrically connected to the circuit Board 20.

In the present invention, the connecting member 12 is in contact with each silicon steel sheet 110 of the silicon steel sheet group 11 to increase the contact surface between the connecting member 12 and the silicon steel sheet group 11, so that each silicon steel sheet 110 is electrically connected to the circuit board 20 through the connecting member 12 The grounding terminal 202 of the circuit board 20 conducts electromagnetic interference to the grounding terminal 202 of the circuit board 20 through conduction, so as to reduce the electromagnetic interference during the operation of the motor or increase the electromagnetic withstand capability. Furthermore, the connecting member 12 is embedded in the silicon steel sheet group 11 in an embedded manner to achieve the purpose of easy construction and simple structure and cost reduction.

The present invention has been described in detail above, but what is described above is only a preferred embodiment of the present invention, and should not limit the scope of implementation of the present invention. That is to say, all equal changes and modifications made in accordance with the scope of application of the present invention should still be covered by the patent of the present invention.

10: Stator

11: Silicon steel sheet group

110: Silicon steel sheet

1101: Slot

1101a: binding site

111: round part

112: Pole Claw

1121: Magnetic pole

1122: magnetic pole face

1123: Magnetic pole gap

12: Connector

121: contact part

122: protruding end

13: Insulation frame group

131: upper insulating frame

132: Lower insulation frame

133: Insulation frame slot

20: circuit board

201: Conductive terminal

202: Ground terminal

Claims (12)

A motor stator anti-interference structure, comprising: a circuit board; a silicon steel sheet group, including a plurality of silicon steel sheets stacked, each silicon steel sheet is provided with a slot, and the slots are aligned and formed together to form a joint part ; A connecting piece is combined in the joint to contact each silicon steel sheet, the connecting piece has a protruding end exposing the silicon steel sheet group; an insulating frame group is arranged on an upper side and a lower side of the silicon steel sheet group and Exposing the protruding end of the connecting piece; a winding group, winding the silicon steel sheet group and the insulating frame group and having a connecting end; wherein the connecting end of the winding group and the protruding end of the connecting piece It is electrically connected to the circuit board. For example, the anti-interference structure of the motor stator according to claim 1, wherein the silicon steel sheet group includes a circular part and a plurality of pole claw parts, the pole claw parts are distributed radially outside the circular part, the The joint part formed by the slot is located at the round part. For example, the anti-interference structure of the motor stator according to claim 1, wherein the silicon steel sheet group includes a circular part and a plurality of pole claw parts, the pole claw parts are distributed radially outside the circular part, the The joint formed by the slot is located at one of the pole claws. For example, the anti-interference structure of the motor stator described in item 3 of the scope of patent application, wherein each of the pole claws includes a magnetic pole column and a magnetic pole surface extending radially at the end of the magnetic pole column, and the joint is Located on the pole face. For example, the motor stator anti-interference structure described in claim 1 of the scope of patent application, wherein the insulating frame group has an upper insulating frame and a lower insulating frame, and the silicon steel sheet group is arranged on the upper insulating frame. Between the frame and the lower insulating frame, and one of the upper insulating frame and the lower insulating frame is provided with an insulating frame slot for extending and exposing the protruding end of the connector. For example, in the motor stator anti-interference structure described in claim 1, wherein the circuit board includes a conductive end and a grounding end, the conductive end is connected to the connecting end of the winding set, and the grounding end is connected to the connecting piece The protruding end. An anti-interference structure for a motor stator, comprising: a silicon steel sheet group including a plurality of silicon steel sheets sandwiched between an insulating frame group; a connecting piece embedded in the silicon steel sheet group and having a contact part to contact each silicon steel sheet In order to increase the contact area between the silicon steel sheet group and the connecting piece, the contact portion is provided with a protruding end protruding from the silicon steel sheet group and the insulating frame group to connect a circuit board; a winding group is wound around the silicon steel sheet group And the insulating frame set has a connecting end connected to the circuit board. For example, in the anti-interference structure of the motor stator described in item 7 of the scope of patent application, the silicon steel sheet group includes a circular part and a plurality of pole claw parts, the pole claw parts are distributed radially outside the circular part, and the connection The piece is embedded in the circular part. For example, in the anti-interference structure of the motor stator described in item 7 of the scope of patent application, the silicon steel sheet group includes a circular part and a plurality of pole claw parts, the pole claw parts are distributed radially outside the circular part, and the connection The piece is embedded in one of the pole claws. For example, the anti-interference structure of the motor stator described in the scope of the patent application, wherein each of the pole claws includes a magnetic pole column and a magnetic pole surface extending radially at the end of the magnetic pole column, and the connecting piece is embedded The pole face. For example, the motor stator anti-interference structure described in item 7 of the scope of patent application, wherein the insulating frame group has an upper insulating frame and a lower insulating frame, and the silicon steel sheet group is arranged on the upper insulating frame. Between the frame and the lower insulating frame, and one of the upper insulating frame and the lower insulating frame is provided with an insulating frame slot for extending and exposing the protruding end of the connecting piece. For example, in the anti-interference structure of the motor stator described in item 7 of the scope of patent application, each silicon steel sheet is provided with a slot, and the slots are aligned and formed together to form a joint portion for the connector to be embedded.

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