CN220067091U - Permanent magnet direct current motor and end cover assembly thereof - Google Patents
Permanent magnet direct current motor and end cover assembly thereof Download PDFInfo
- Publication number
- CN220067091U CN220067091U CN202321112897.8U CN202321112897U CN220067091U CN 220067091 U CN220067091 U CN 220067091U CN 202321112897 U CN202321112897 U CN 202321112897U CN 220067091 U CN220067091 U CN 220067091U
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- CN
- China
- Prior art keywords
- power terminal
- permanent magnet
- end cover
- rectifier bridge
- middle bulge
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Links
- 230000001012 protector Effects 0.000 claims abstract description 36
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 230000017525 heat dissipation Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Abstract
The utility model provides a permanent magnet direct current motor and an end cover assembly thereof, comprising an end cover, a circuit board, a first power terminal and a second power terminal; the rectifier bridge is located between the first power terminal and the middle bulge, the current protector is located between the second power terminal and the middle bulge, the size of the rectifier bridge is larger than the distance between the first power terminal and the outer peripheral wall of the middle bulge, one side, close to the first power terminal, of the middle bulge comprises a concave groove, the rectifier bridge correspondingly stretches into the concave groove, the end cover further comprises a protection groove between the second power terminal and the middle bulge, and the current protector is used for being inserted into the protection groove. The middle bulge is close to one side of the first power supply terminal and comprises a concave groove, when the rectifier bridge is installed between the second power supply terminal and the middle bulge in a wrong way, the rectifier bridge cannot be installed, the foolproof effect of installation is realized, and the protection groove can play a role in protection on the current protector.
Description
Technical Field
The utility model relates to a permanent magnet direct current motor and an end cover assembly thereof.
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 the design of the applicant, a rectifier bridge and a current protector are arranged on the lower side of a circuit board, and then the circuit board is connected to two power terminals of a motor, however, during assembly, the rectifier bridge and the current protector are positioned on the lower side of the circuit board, so that the phenomenon that the left side and the right side of the circuit board are reversely assembled easily occurs.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a permanent magnet direct current motor and an end cover assembly thereof.
In order to solve the technical problem, the utility model provides an end cover assembly of a permanent magnet direct current motor, which comprises an end cover, a circuit board, a first power terminal and a second power terminal; the end cover comprises a middle bulge, the first power terminal and the second power terminal are connected to the end cover and are positioned at two sides of the middle bulge at equal intervals, the circuit board comprises a board body, a rectifier bridge and a current protector, the board body is propped against the first power terminal, the second power terminal and the middle bulge, and the rectifier bridge and the current protector are connected to one side of the board body, which faces the end cover;
the rectifier bridge is located between the first power terminal and the middle bulge, the current protector is located between the second power terminal and the middle bulge, the size of the rectifier bridge is larger than the distance between the first power terminal and the outer peripheral wall of the middle bulge, one side, close to the first power terminal, of the middle bulge comprises a concave groove, the rectifier bridge correspondingly stretches into the concave groove, the end cover further comprises a protection groove between the second power terminal and the middle bulge, and the current protector is used for being inserted into the protection groove.
In a more preferred embodiment, the first power terminal includes a first protrusion, the second power terminal includes a second protrusion, and the plate includes a first slot and a second slot; when the first protruding portion corresponds to the first caulking groove and the second protruding portion corresponds to the second caulking groove, the rectifier bridge corresponds to the recess, and the current protector is inserted into the protection groove.
In a more preferred embodiment, the intermediate projection includes a positioning post, and the plate includes a positioning hole, and the positioning hole is connected to the positioning post.
In a more preferred embodiment, the first power terminal and the second power terminal are connected with the board body through riveting.
In a further preferred embodiment, the first power supply terminal, the second power supply terminal, the intermediate protrusion, the rectifier bridge and the current protector are in a common line.
The utility model also provides a permanent magnet direct current motor, which comprises the end cover assembly of the permanent magnet direct current motor; the permanent magnet direct current motor further comprises a shell, and the end cover is connected with the shell in a clamping mode.
In a more preferred embodiment, the housing includes a plurality of heat dissipating apertures.
In a more preferred embodiment, the end cap includes a ring insert embedded inside the housing, the housing opening includes a notch, and the outside of the ring insert includes a positioning insert, the positioning insert being engaged with the notch.
Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
the rectifier bridge with the current protector is located the plate body orientation one side of end cover, and it can prevent the rectifier bridge with the current protector collides the damage in the transportation, the size of rectifier bridge is greater than the interval between first power supply terminal and the bellied periphery wall in centre, just, the protruding one side that is close to first power supply terminal in centre includes the recess, when the rectifier bridge is adorned the anti-between second power supply terminal and the centre arch of anti-dress, the rectifier bridge can't be installed, realizes the slow-witted effect of installation prevention, the current protector embedding in the protection groove, the protection groove can be right the effect that the current protector played the protection.
Drawings
Fig. 1 is a schematic perspective view of a permanent magnet dc motor in accordance with a preferred embodiment of the present utility model;
fig. 2 is an exploded perspective view of a permanent magnet dc motor according to a preferred embodiment of the present utility model;
fig. 3 is a schematic perspective view of an end cap in accordance with a preferred embodiment of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and detailed description.
A permanent magnet direct current motor comprising a housing 1, a stator, a rotor 2 and an end cap assembly 3, the stator and the rotor 2 being arranged within the housing 1, the rotor 2 rotating relative to the stator; the stator is a pair of magnets arranged in the casing 1, the rotor 2 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 cap assembly 3 includes an end cap 31, a circuit board 32, a first power terminal 33, and a second power terminal 34; the end cover 31 comprises a middle bulge 311, the first power terminal 33 and the second power terminal 34 are connected to the end cover 31 and are positioned at two sides of the middle bulge 311 at equal intervals, the circuit board 32 comprises a board body 321, a rectifier bridge 322 and a current protector 323, the board body 321 is propped against the first power terminal 33, the second power terminal 34 and the middle bulge 311, and the rectifier bridge 322 and the current protector 323 are connected to one side of the board body 321 facing the end cover 31; the rectifier bridge 322 is located between the first power terminal 33 and the middle protrusion 311, the current protector 323 is located between the second power terminal 34 and the middle protrusion 311, the size of the rectifier bridge 322 is larger than the interval between the first power terminal 33 and the outer peripheral wall of the middle protrusion 311, one side of the middle protrusion 311 near the first power terminal 33 comprises a concave recess 3111, the rectifier bridge 322 correspondingly stretches into the concave recess 3111, the end cover 31 further comprises a protection groove 312 between the second power terminal 34 and the middle protrusion 311, and the current protector 323 is used for being inserted into the protection groove 312.
The rectifier bridge 322 and the current protector 323 are located on one side of the plate 321, which faces the end cover 31, and can prevent the rectifier bridge 322 and the current protector 323 from being damaged by collision during transportation, the size of the rectifier bridge 322 is larger than the distance between the first power terminal 33 and the outer peripheral wall of the middle protrusion 311, and one side of the middle protrusion 311, which is close to the first power terminal 33, comprises a recess 3111, when the rectifier bridge 322 is erroneously assembled and reversely assembled between the second power terminal 34 and the middle protrusion 311, the rectifier bridge 322 cannot be assembled, so that the effect of foolproof installation is realized, the current protector 323 is embedded in the protection groove 312, and the protection groove 312 can play a role of protecting the current protector 323.
The first power terminal 33 includes a first protrusion 331, the second power terminal 34 includes a second protrusion 341, and the plate 321 includes a first slot 3211 and a second slot 3212; when the first protrusion 331 corresponds to the first caulking groove 3211 and the second protrusion 341 corresponds to the second caulking groove 3212, the rectifying bridge 322 corresponds to the recess 3111, and the current protector 323 is inserted into the protection groove 312; when the rectifier bridge 322 is erroneously mounted between the second power terminal 34 and the middle protrusion 311, the first protrusion 331 and the second caulking groove 3212 cannot be completely abutted, and thus, the mounting fool-proof function is performed.
In this embodiment, the middle protrusion 311 includes a positioning post 3112, the plate 321 includes a positioning hole 3213, the positioning hole 3213 is connected to the positioning post 3112, and the positioning post 3112 and the positioning hole 3213 implement positioning connection between the middle protrusion 311 and the plate 321.
In this embodiment, the first power terminal 33 and the second power terminal 34 are connected to the plate 321 by riveting.
The first power supply terminal 33, the second power supply terminal 34, the middle protrusion 311, the rectifier bridge 322 and the current protector 323 are positioned on the same straight line, and the rectifier bridge 322 and the current protector 323 can be shielded by the middle protrusion 311, the first power supply terminal 33 and the second power supply terminal 34 to the greatest extent, so that the protection effect is better.
In this embodiment, the end cover 31 is in snap connection with the housing 1, the housing 1 includes a plurality of heat dissipation holes 11, the end cover 31 includes a ring insert 313 embedded inside the housing 1, an opening of the housing 1 includes a notch 12, an outer side of the ring insert 313 includes a positioning insert 314, and the positioning insert 314 is engaged with the notch 12.
When the rotor 2 is installed in the shell 1, the annular insert 313 of the end cover 31 is installed in alignment with the opening of the shell 1, so that the positioning insert 314 is connected corresponding to the notch 12; the board body 321 of the circuit board 32 is mounted on the first power terminal 33 and the second power terminal 34, the first protrusion 331 is inserted corresponding to the first caulking groove 3211, the second protrusion 341 is inserted corresponding to the second caulking groove 3212, the rectifying bridge 322 is inserted corresponding to the recess 3111, and the current protector 323 is inserted corresponding to the protection groove 312.
The foregoing is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto, and any person skilled in the art will be able to make insubstantial modifications of the present utility model within the scope of the present utility model disclosed herein by this concept, which falls within the actions of invading the protection scope of the present utility model.
Claims (8)
1. The end cover assembly of the permanent magnet direct current motor is characterized by comprising an end cover, a circuit board, a first power terminal and a second power terminal; the end cover comprises a middle bulge, the first power terminal and the second power terminal are connected to the end cover and are positioned at two sides of the middle bulge at equal intervals, the circuit board comprises a board body, a rectifier bridge and a current protector, the board body is propped against the first power terminal, the second power terminal and the middle bulge, and the rectifier bridge and the current protector are connected to one side of the board body, which faces the end cover;
the rectifier bridge is located between the first power terminal and the middle bulge, the current protector is located between the second power terminal and the middle bulge, the size of the rectifier bridge is larger than the distance between the first power terminal and the outer peripheral wall of the middle bulge, one side, close to the first power terminal, of the middle bulge comprises a concave groove, the rectifier bridge correspondingly stretches into the concave groove, the end cover further comprises a protection groove between the second power terminal and the middle bulge, and the current protector is used for being inserted into the protection groove.
2. An end cap assembly for a permanent magnet direct current motor as defined in claim 1, wherein: the first power supply terminal comprises a first protruding part, the second power supply terminal comprises a second protruding part, and the plate body comprises a first caulking groove and a second caulking groove; when the first protruding portion corresponds to the first caulking groove and the second protruding portion corresponds to the second caulking groove, the rectifier bridge corresponds to the recess, and the current protector is inserted into the protection groove.
3. An end cap assembly for a permanent magnet dc motor according to claim 1 or 2, wherein: the middle bulge comprises a positioning column, the plate body comprises a positioning hole, and the positioning hole is connected with the positioning column.
4. An end cap assembly for a permanent magnet direct current motor as defined in claim 1, wherein: the first power terminal and the second power terminal are connected with the plate body through riveting.
5. An end cap assembly for a permanent magnet direct current motor as defined in claim 1, wherein: the first power supply terminal, the second power supply terminal, the middle bulge, the rectifier bridge and the current protector are positioned on the same straight line.
6. A permanent magnet dc motor comprising an end cap assembly of a permanent magnet dc motor according to any one of claims 1 to 5; the permanent magnet direct current motor further comprises a shell, and the end cover is connected with the shell in a clamping mode.
7. A permanent magnet direct current motor as claimed in claim 6, wherein: the housing includes a plurality of heat dissipation apertures.
8. A permanent magnet direct current motor as claimed in claim 6, wherein: the end cover comprises a ring embedded block embedded into the inner side of the shell, a notch is formed in the opening of the shell, a positioning embedded block is arranged on the outer side of the ring embedded block, and the positioning embedded block is embedded into the notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321112897.8U CN220067091U (en) | 2023-05-10 | 2023-05-10 | Permanent magnet direct current motor and end cover assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321112897.8U CN220067091U (en) | 2023-05-10 | 2023-05-10 | Permanent magnet direct current motor and end cover assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220067091U true CN220067091U (en) | 2023-11-21 |
Family
ID=88789190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321112897.8U Active CN220067091U (en) | 2023-05-10 | 2023-05-10 | Permanent magnet direct current motor and end cover assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220067091U (en) |
-
2023
- 2023-05-10 CN CN202321112897.8U patent/CN220067091U/en active Active
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