CN116633084A - Permanent magnet direct current motor and motor device - Google Patents

Permanent magnet direct current motor and motor device Download PDF

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Publication number
CN116633084A
CN116633084A CN202310522103.3A CN202310522103A CN116633084A CN 116633084 A CN116633084 A CN 116633084A CN 202310522103 A CN202310522103 A CN 202310522103A CN 116633084 A CN116633084 A CN 116633084A
Authority
CN
China
Prior art keywords
permanent magnet
direct current
motor
magnet direct
current motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310522103.3A
Other languages
Chinese (zh)
Inventor
陈校伟
赵新强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XIAMEN XINZHONGDA TECHNOLOGY CO LTD
Original Assignee
XIAMEN XINZHONGDA TECHNOLOGY CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by XIAMEN XINZHONGDA TECHNOLOGY CO LTD filed Critical XIAMEN XINZHONGDA TECHNOLOGY CO LTD
Priority to CN202310522103.3A priority Critical patent/CN116633084A/en
Publication of CN116633084A publication Critical patent/CN116633084A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/0094—Structural association with other electrical or electronic devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/27—Devices for sensing current, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/14—Means for supporting or protecting brushes or brush holders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

The invention provides a permanent magnet direct current motor and a motor device, wherein the permanent magnet direct current motor consists of a motor body and a circuit board, the end part of the motor body comprises two power terminals, the circuit board at least comprises a board body and a plurality of electronic elements arranged on the board body, the board body is connected with the two power terminals in a propping way, the board body comprises a connecting surface facing the motor body, the plurality of electronic elements are connected with the connecting surface, an installation space is formed between the board body and the end part of the motor body, and the electronic elements are arranged in the installation space; the circuit board also comprises two power lines, wherein the power lines are connected to the connecting surface and supply power to the power terminals through the board body and the plurality of electronic elements. The permanent magnet direct current motor consists of a motor body and a circuit board, and can protect electronic elements without independently arranging a protective cover, so that the possibility of collision and damage in the transportation process is reduced.

Description

Permanent magnet direct current motor and motor device
Technical Field
The invention relates to a permanent magnet direct current motor and a motor device.
Background
The permanent magnet direct current motor must be connected with a rectifier bridge, overcurrent protection or temperature fuses to obtain safe and reliable operation characteristics, and the traditional connection and fixation mode of the electronic components of the protector is to wrap and fix the electronic components exposed outside the motor by glue, gummed paper and the like, so that the mountable use volume of the motor is greatly reduced, meanwhile, the possibility of collision and damage of the exposed protector components during the assembly and transportation is reduced, and the stability and reliability of the whole system are reduced by the exposed protector. In addition, as a motor device, for example, a motor device for underwater operation, it is necessary to place a permanent magnet dc motor in a waterproof housing, and if a protective cover for protecting a circuit board or an electronic component is additionally provided, the protective cover functions only before transportation or assembly to the waterproof housing, and after the protective cover is installed in the waterproof housing, only the protective cover functions to prevent subsequent maintenance, and the corresponding cost increases.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a permanent magnet direct current motor and a motor device.
In order to solve the technical problems, the invention provides a permanent magnet direct current motor, which consists of a motor body and a circuit board, wherein the end part of the motor body comprises two power terminals, the circuit board at least comprises a board body and a plurality of electronic elements arranged on the board body, the board body frame is in butt connection with the two power terminals, the board body comprises a connecting surface facing the motor body, the plurality of electronic elements are connected on the connecting surface, an installation space is formed between the board body and the end part of the motor body, and the electronic elements are arranged in the installation space; the circuit board also comprises two power lines, wherein the power lines are connected to the connecting surface and supply power to the power terminals through the board body and the plurality of electronic elements.
In a more preferred embodiment, the end portion of the motor body further includes a middle protrusion, the middle protrusion is supported against the middle portion of the board, and the two power terminal frames are supported against two sides of the board.
In a more preferred embodiment, the two power terminals are located on both sides of the middle protrusion.
In a more preferred embodiment, the upper end surface of the middle protrusion includes a plurality of gasket protrusions, the gasket protrusions are used for abutting against the connecting surface, the upper end surface of the middle protrusion further includes a positioning protrusion, and the plate body further includes a positioning hole, and the positioning protrusion is in jogged connection with the positioning hole.
In a more preferred embodiment, the power terminals respectively include a supporting surface, the power terminals further include a protrusion located on the supporting surface, the board body further includes a fitting hole corresponding to the protrusion, the supporting surface is used for supporting the connection surface, and the protrusion is used for being in fitting connection with the fitting hole.
In a more preferred embodiment, the plate body further includes a middle through hole, and the rotation shaft of the motor body passes through the middle through hole.
In a preferred embodiment, the plurality of electronic components are divided into at least a rectifier bridge and a current protector, wherein an input end of the rectifier bridge is connected with the power line, an output end of the rectifier bridge is connected with the power terminal, and the current protector is connected between the rectifier bridge and the power line.
In a more preferred embodiment, the two power terminals are in alignment with the central protrusion.
In a preferred embodiment, the two protrusions are not aligned with the positioning protrusion.
In a more preferred embodiment, the current protector is PPTC.
In a more preferred embodiment, the motor body includes an end cap on which the wiring board is disposed, and the power supply terminal is disposed on the end cap; the motor body further comprises a brush arm and a carbon brush; the brush arm and the carbon brush are arranged in the end cover; one end of the brush arm is connected with a power terminal, and the other end of the brush arm is connected with the carbon brush;
the brush arm comprises a connecting port, the connecting port is connected with two elastic cantilevers which extend in opposite directions, one end of each elastic cantilever is connected with the connecting port, the other end of each elastic cantilever extends obliquely towards the outer side of the connecting port, the carbon brush comprises a connecting block, the connecting block can be inserted into the connecting port from the inner side of the connecting port, and the elastic cantilevers are elastically clamped on the connecting block.
In a preferred embodiment, the brush arm and the power terminal are connected by riveting.
In a more preferred embodiment, the motor body includes a motor housing and an end cap, the end cap being connected to an opening of the motor housing, the end cap including a tab, the opening including a recess, the tab being configured to engage the recess to position the end cap relative to the motor housing.
The invention also provides a motor device, which comprises a protective shell and the permanent magnet direct current motor; the permanent magnet direct current motor is arranged in the protective shell.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the end part of the motor body comprises two power terminals, the circuit board at least comprises a board body and a plurality of electronic elements arranged on the board body, the board body frame is in butt connection with the two power terminals, the board body comprises a connecting surface facing the motor body, and the plurality of electronic elements are connected to the connecting surface; the circuit board also comprises two power lines, wherein the power lines are connected to the connecting surface and supply power to the power terminals through the board body and the plurality of electronic elements; the permanent magnet direct current motor is composed of a motor body and a circuit board, a protective cover is not arranged, protection of electronic elements can be achieved without independently arranging the protective cover, the electronic elements are located on the connecting surface of the plate body towards the motor body, the electronic elements are arranged in the installation space, and the possibility of collision and damage in the transportation process is reduced.
Before the permanent magnet direct current motor is arranged on the protective shell, the protective effect before assembly and during transportation can be achieved, after the permanent magnet direct current motor is arranged on the protective shell, maintenance is convenient, and the protective cover is not required to be detached.
The plurality of electronic components are connected to the connecting surface; and the pins of the electronic element can protrude out of the outward surface of the circuit board after welding, thereby facilitating subsequent overhaul, trimming and the like.
The current protector is a PPTC, i.e., (Polymeric Positive Temperature Coefficient), i.e., a high molecular polymer positive coefficient temperature element. Also known as Resettable fuses (fuses) or polymeric fuses (polyfuses), the current protectors can function both to monitor temperature for automatic disconnection and reconnection.
Drawings
Fig. 1 is a schematic perspective view of a permanent magnet dc motor in accordance with a preferred embodiment of the present invention;
fig. 2 is an exploded perspective view of a permanent magnet dc motor according to a preferred embodiment of the present invention.
Fig. 3 is a schematic perspective view of an end cap in accordance with a preferred embodiment of the present invention.
Fig. 4 is a perspective view of a brush arm and a carbon brush according to a preferred embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and detailed description.
Referring to fig. 1-2, a permanent magnet direct current motor is composed of a motor body 1 and a circuit board 2, wherein the motor body 1 comprises a motor shell 11, a stator, a rotor and an end cover 12; the stator and the rotor are arranged in the motor housing 11, the rotor rotating relative to the stator; the stator is a pair of magnets arranged in the motor housing 11, the rotor includes an armature winding, a commutator and a rotating shaft, the commutator and the armature winding are fixed on the rotating shaft, and these structures are in the prior art and are not described herein.
The end cover 12 is connected to the rear end of the motor housing 11, the rotation shaft passes through the front end of the motor housing 11 to form a driving shaft, and the rotation shaft passes through the end cover 12.
The motor body 1 further comprises two power terminals 13 extending out of the end cap 12; the circuit board 2 at least comprises a board body 21 and a plurality of electronic components 22 arranged on the board body 21, the board body 21 is in supporting connection with the two power terminals 13, the board body 21 comprises a connecting surface facing the motor body 1, and the plurality of electronic components 22 are connected on the connecting surface; the circuit board 2 further comprises two power lines 23, and the power lines 23 are connected to the connection surface and supply power to the power terminals 13 through the board body 21 and the plurality of electronic components 22.
The end cap 12 is connected to the opening of the motor housing 11, the end cap 12 includes a protrusion 121, the opening includes a groove 111, and the protrusion 121 is configured to be embedded in the groove 111 to position the end cap 12 relative to the motor housing 11.
In this embodiment, the motor body 1 further includes a brush arm 15 and a carbon brush 16; the brush arms 15 and carbon brushes 16 are arranged in the end cover 12; one end of the brush arm 15 is connected with a power terminal 13, and the other end of the brush arm 15 is connected with the carbon brush 16; the brush arm 15 includes a connection port 152, the connection port 152 is connected to two elastic cantilevers 151 extending in opposite directions, one end of the elastic cantilevers 151 is connected to the connection port, the other end of the elastic cantilevers extends obliquely toward the outer side of the connection port 152, the carbon brush 16 includes a connection block 161, the connection block 161 can be inserted into the connection port 152 from the inner side of the connection port 152, and the elastic cantilevers 151 are elastically clamped on the connection block 161. The brush arm 15 and the power terminal 13 are connected by riveting.
The end part of the motor body 1 further comprises a middle bulge 14, the middle bulge 14 is propped against the middle part of the plate body 21, and the two power terminals 13 are propped against two sides of the plate body 21. In the present embodiment, the end of the motor body 1, that is, the end cover 12, the middle protrusion 14 is located at the center of the end cover 12, and the two power terminals 13 are located at both sides of the middle protrusion 14, more specifically, the two power terminals 13 are in the same line with the middle protrusion 14.
The upper end surface of the middle bulge 14 comprises a plurality of gasket bulges 141, the gasket bulges 141 are used for abutting against the connecting surface, the upper end surface of the middle bulge 14 further comprises a positioning bulge 142, the plate body 21 further comprises a positioning hole 211, and the positioning bulge 142 is connected with the positioning hole 211 in a jogged manner. The power terminal 13 includes a supporting surface 131, the power terminal 13 further includes a protrusion 132 disposed on the supporting surface 131, the board 21 further includes a fitting hole 212 corresponding to the protrusion 132, the supporting surface 131 is configured to support the connection surface, and the protrusion 132 is configured to be in fitting connection with the fitting hole 212. In this embodiment, the upper end surface of the middle protrusion 14 includes three spacer protrusions 141 and one positioning protrusion 142, the three spacer protrusions 141 and one positioning protrusion 142 are uniformly spaced along the circumferential direction, a positioning surface is formed between the end surfaces of the spacer protrusions 141 and the positioning protrusion 142, the connecting surface is cooperatively connected with the positioning surface, the positioning protrusion 142 is engaged with the positioning hole 211, and the protruding portion 132 is engaged with the engaging hole 212, so that positioning of the plate 21 can be achieved; in this embodiment, the positioning protrusion 142 and the protrusion 132 are not on the same straight line, and the three points define a plane, so that the positioning is more accurate.
A mounting space 3 is formed between the plate body 21 and the end of the motor body 1, the electronic component 22 is disposed in the mounting space 3, the plate body 21 and the end of the motor body 1 may be spaced apart to form the mounting space 3, the mounting space 3 accommodates the electronic component 22, and the electronic component 22 may be prevented from being directly collided.
In this embodiment, the plate 21 further includes a middle through hole 213, and the rotation shaft of the motor body 1 passes through the middle through hole 213.
In this embodiment, the plurality of electronic components 22 are at least divided into a rectifier bridge 22b and a current protector 22a, wherein an input end of the rectifier bridge 22b is connected to the power line 23, an output end of the rectifier bridge 22b is connected to the power terminal 13, and the current protector 22a is connected between the rectifier bridge 22b and the power line 23. The current protector 22b is a PPTC, i.e., (Polymeric Positive Temperature Coefficient), i.e., a high molecular polymer positive coefficient temperature element. Also known as Resettable fuses (fuses) or polymeric fuses (polyfuses), the current protectors can function both to monitor temperature for automatic disconnection and reconnection.
During installation, the connection surface of the plate body 21 faces the end of the motor body 1, the positioning hole 211 corresponds to the positioning protrusion 142, the fitting hole 212 corresponds to the protruding portion 132, and the protruding portion 132 and the fitting hole 212 are connected by welding to play a role in fixed connection and conductive connection.
The foregoing is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art will be able to make insubstantial modifications of the present invention within the scope of the present invention disclosed herein by this concept, which falls within the actions of invading the protection scope of the present invention.

Claims (14)

1. The permanent magnet direct current motor is characterized by comprising a motor body and a circuit board, wherein the end part of the motor body comprises two power terminals, the circuit board at least comprises a board body and a plurality of electronic elements arranged on the board body, the board body is connected to the two power terminals in a supporting way, the board body comprises a connecting surface facing the motor body, the plurality of electronic elements are connected to the connecting surface, an installation space is formed between the board body and the end part of the motor body, and the electronic elements are arranged in the installation space; the circuit board also comprises two power lines, wherein the power lines are connected to the connecting surface and supply power to the power terminals through the board body and the plurality of electronic elements.
2. A permanent magnet direct current motor according to claim 1, wherein: the end part of the motor body further comprises a middle bulge, the middle bulge is propped against the middle part of the plate body, and the two power supply terminal frames are propped against the two sides of the plate body.
3. A permanent magnet direct current motor according to claim 2, wherein: the two power terminals are positioned on two sides of the middle protrusion.
4. A permanent magnet direct current motor according to claim 2, wherein: the upper end face of the middle bulge comprises a plurality of gasket bulges, the gasket bulges are used for being abutted against the connecting face, the upper end face of the middle bulge also comprises a positioning bulge, and the plate body also comprises a positioning hole, and the positioning bulge is connected with the positioning hole in a jogged mode.
5. A permanent magnet direct current motor as claimed in claim 4, wherein: the power terminal comprises a frame supporting surface, the power terminal further comprises a protruding portion located on the frame supporting surface, the board body further comprises a jogging hole corresponding to the protruding portion, the frame supporting surface is used for supporting the connecting surface, and the protruding portion is used for jogging connection of the jogging hole.
6. A permanent magnet direct current motor according to claim 1 or 2, characterized in that: the plate body also comprises a middle through hole, and the rotating shaft of the motor body penetrates through the middle through hole.
7. A permanent magnet direct current motor according to claim 1, wherein: the electronic components are at least divided into a rectifier bridge and a current protector, the input end of the rectifier bridge is connected with the power line, the output end of the rectifier bridge is connected with the power terminal, and the current protector is connected between the rectifier bridge and the power line.
8. A permanent magnet direct current motor according to claim 3, wherein: the two power terminals and the middle bulge are positioned on the same straight line.
9. A permanent magnet direct current motor as claimed in claim 5, wherein: the two protruding parts and the positioning protrusion are not in the same straight line.
10. A permanent magnet direct current motor according to claim 7, wherein: the current protector is PPTC.
11. A permanent magnet direct current motor according to claim 1, wherein: the motor body comprises an end cover, the circuit board is arranged on the end cover, and the power supply terminal is arranged on the end cover; the motor body further comprises a brush arm and a carbon brush; the brush arm and the carbon brush are arranged in the end cover; one end of the brush arm is connected with a power terminal, and the other end of the brush arm is connected with the carbon brush;
the brush arm comprises a connecting port, the connecting port is connected with two elastic cantilevers which extend in opposite directions, one end of each elastic cantilever is connected with the connecting port, the other end of each elastic cantilever extends obliquely towards the outer side of the connecting port, the carbon brush comprises a connecting block, the connecting block can be inserted into the connecting port from the inner side of the connecting port, and the elastic cantilevers are elastically clamped on the connecting block.
12. A permanent magnet direct current motor according to claim 11, wherein: the brush arm is connected with the power terminal through riveting.
13. A permanent magnet direct current motor according to claim 1, wherein: the motor body comprises a motor shell and an end cover, the end cover is connected to an opening of the motor shell, the end cover comprises a protruding block, the opening comprises a groove, and the protruding block is used for being embedded into the groove to achieve positioning of the end cover relative to the motor shell.
14. A motor arrangement comprising a protective housing and a permanent magnet direct current motor as claimed in any one of claims 1-13; the permanent magnet direct current motor is arranged in the protective shell.
CN202310522103.3A 2023-05-10 2023-05-10 Permanent magnet direct current motor and motor device Pending CN116633084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310522103.3A CN116633084A (en) 2023-05-10 2023-05-10 Permanent magnet direct current motor and motor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310522103.3A CN116633084A (en) 2023-05-10 2023-05-10 Permanent magnet direct current motor and motor device

Publications (1)

Publication Number Publication Date
CN116633084A true CN116633084A (en) 2023-08-22

Family

ID=87637422

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310522103.3A Pending CN116633084A (en) 2023-05-10 2023-05-10 Permanent magnet direct current motor and motor device

Country Status (1)

Country Link
CN (1) CN116633084A (en)

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