CN112688479B - Brushless permanent magnet direct current motor - Google Patents
Brushless permanent magnet direct current motor Download PDFInfo
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- CN112688479B CN112688479B CN202011619847.XA CN202011619847A CN112688479B CN 112688479 B CN112688479 B CN 112688479B CN 202011619847 A CN202011619847 A CN 202011619847A CN 112688479 B CN112688479 B CN 112688479B
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Abstract
The invention provides a brushless permanent magnet direct current motor, which comprises a cylindrical motor body and a protection mechanism, wherein the protection mechanism is arranged on the outer side of the motor body, a longitudinal impact force is converted into a transverse thrust force through the matching of a collision prevention plate and a first buffer structure and through the matching of a longitudinal rod and a transverse rod, and the transverse rod can push a drain hole to discharge water by combining with an underwater environment, so that the impact force is buffered by using the water to form a first layer of collision prevention; simultaneously be equipped with second buffer structure in the middle of the frame, the buffer beam can turn into the thrust of push rod with vertical thrust, forms the second floor anticollision, combines aquatic environment characteristic and anticollision buffering, can effectively dissolve the impact force, the protection motor.
Description
Technical Field
The invention relates to a structure of a brushless permanent magnet direct current motor.
Background
Brushless permanent magnet direct current motors have the characteristics of low failure rate, high efficiency, small size and the like, and are widely applied in various fields. There are some underwater operations, and brushless permanent magnet dc motors have also been used. However, underwater environments are often complex and can cause unpredictable impacts or injuries that can harm the use of the motor. The characteristics of the underwater environment, to some extent, also limit the use of brushless permanent magnet dc motors.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a brushless permanent magnet direct current motor which is provided with an anti-collision protection mechanism and can effectively protect the motor.
The invention is realized by the following modes:
a brushless permanent magnet direct current motor comprises a cylindrical motor body and a protection mechanism, wherein the protection mechanism is arranged on the outer side of the motor body; the anti-collision device comprises two arc-shaped anti-collision plates and a plurality of first buffer structures; the first buffer structure comprises a longitudinal rod, a transverse rod, a first spring, a second spring and a through hole arranged at the end part of the frame; the longitudinal rod is connected with the bottom surface of the anti-collision plate; the first spring is sleeved on the longitudinal rod, and two ends of the first spring are respectively connected with the outer side of the frame and the bottom of the arc-shaped anti-collision plate; the cross rod is arranged in the through hole; the through hole is opened to form a drain hole on the end surface of the frame; an opening is formed in the side face of the other end, close to the through hole, of the through hole and matched with the longitudinal rod; the longitudinal rod can extend into the opening in a sliding mode; the through hole is provided with an annular wall to form an opening matched with the cross rod; the second spring is sleeved on the cross rod, one end of the second spring is connected with the annular wall, and the other end of the second spring is connected with the cross rod; a first cambered surface is formed at the position, close to the opening end, of the cross rod; and a second cambered surface matched with the cross rod is arranged at the bottom of the longitudinal rod.
Furthermore, the first buffer structures are distributed at two ends of the anti-collision plate.
Furthermore, an annular step is arranged at the near opening end of the cross rod; one end of the second spring is connected with the annular wall, and the other end of the second spring is connected with the annular step.
Further, the frame is provided with a hollow structure.
Furthermore, a second buffer structure is arranged in the middle of the frame; the second buffer structure comprises 4 buffer rods distributed circumferentially and 4 buffer tubes matched with the buffer rods; the front end of the buffer rod is provided with a push block; wedge-shaped blocks are arranged at two ends of the push block and extend into the buffer tube; the buffer rod is sleeved with a third spring, and two ends of the third spring are respectively connected with the frame and the push block; a push rod is arranged in the buffer tube; the push rod is matched with the buffer tube, and an inclined plane corresponding to the wedge block is arranged at one end of the push rod close to the push block; a water outlet is arranged in the middle of the buffer tube; the push rod sleeve is provided with a fourth spring; one end of the fourth spring is connected to the wall of the buffer tube, and the other end of the fourth spring is connected with the push rod.
Furthermore, the output end of the motor body is provided with fan blades; a protective cover is arranged at the end, close to the fan blades, of the body; the protection casing is equipped with the filter screen.
The invention has the beneficial effects that: through the collision-proof plate and the first buffer structure, the longitudinal rod is matched with the transverse rod, the longitudinal impact force is converted into transverse thrust, and meanwhile, the transverse rod can push the water discharge hole to discharge water by combining the underwater environment, so that the impact force is buffered by using water, and a first layer of collision-proof is formed; simultaneously be equipped with second buffer structure in the middle of the frame, the buffer beam can turn into the thrust of push rod with vertical thrust, forms the second floor anticollision, combines aquatic environment characteristic and anticollision buffering, can effectively dissolve the impact force, the protection motor.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of a bump guard;
FIG. 3 is a schematic view of a frame structure;
FIG. 4 is a cross-sectional view of a second buffer structure;
fig. 5 is a schematic view of the motor and frame connection.
Fig. 6 is a schematic structural view of the motor body.
In the figure, 1 a motor body; 2, a frame; 3, an anti-collision device; 31 a bumper plate; 32 a first buffer structure; 321 a longitudinal rod; 322, a cross bar; 323 a first spring; 324 a second spring; 325 through hole; 326 drain holes; 327 opening; 3251 an annular wall; 3221 a first cambered surface; 3211 second arc surface; 3222 a circular step; 4, a hollow structure; 5 a second buffer structure; 51 a buffer rod; 511 a push block; 512 wedge-shaped blocks; 52 a buffer tube; 521 push rod; 522 a bevel; 53 a third spring; 54 a water outlet; 55 a fourth spring; 6, fan blades; 7, a protective cover; 8, filtering by using a filter screen; and 9, connecting rods.
Detailed Description
As shown in fig. 1-3, a brushless permanent magnet dc motor includes a cylindrical motor body 1 and a protection mechanism, the protection mechanism is disposed outside the motor body 1, the protection mechanism includes a cylindrical frame 2 and an anti-collision device 3 disposed outside the frame; the anti-collision device 3 comprises two arc-shaped anti-collision plates 31 and a plurality of first buffer structures 32; the first buffer structure 32 comprises a longitudinal rod 321, a transverse rod 322, a first spring 323, a second spring 324 and a through hole 325 arranged at the end part of the frame; the longitudinal rod 321 is connected with the bottom surface of the anti-collision plate 31; the first spring 322 is sleeved on the longitudinal rod 321, and two ends of the first spring 322 are respectively connected with the outer side of the frame 21 and the bottom of the arc-shaped anti-collision plate 31; the cross bar 322 is arranged in the through hole 325; the through hole 325 is opened with a drain hole 326 on the end surface of the frame 2; the side surface of the other end of the near through hole 325 is provided with an opening 327 upwards to be matched with the longitudinal rod 321; the longitudinal rod 321 can slide and extend into the opening; the through hole 325 is provided with an annular wall 3251 forming an opening 3252 adapted to the cross bar 322; the second spring 324 is sleeved on the cross rod 322, one end of the second spring is connected with the annular wall 3251, and the other end of the second spring is connected with the cross rod 322; a first cambered surface 3221 is formed at the position, close to the opening end, of the cross rod 322; the bottom of the longitudinal rod 321 is provided with a second arc surface 3211 matched with the transverse rod 322.
The first buffer structures 32 are symmetrically distributed at both ends of the crash board 31.
In this embodiment, the permanent magnet dc motor is applied to a water environment, and thus both the motor body and the protection mechanism operate in the water environment. The anti-collision plates 31 are respectively arranged on the outer sides of the frames 2, are arc-shaped, and wrap the frames. Each anti-collision plate is provided with four sets of first buffer structures 32 which are respectively arranged at two ends of the anti-collision plate.
An annular step 3222 is arranged at the end, close to the opening 327, of the cross bar 322; the second spring 324 is connected to the annular wall 3251 at one end and to the annular step 3222 at the other end.
When the motor is used, the protection structure is sleeved outside the motor body, when external impact is received, the anti-collision device can firstly bear impact, the anti-collision plate 31 can extrude the longitudinal rod after the impact is received, the longitudinal rod extrudes the second cambered surface through the matching of the first cambered surface and the second cambered surface, the transverse rod slides in the through hole, so that the longitudinal pressure is converted into transverse force, the water drain hole is filled with water because the motor works in a water environment, and the transverse rod slides in the through hole because of the longitudinal rod, and the water in the through hole can be pushed out of the water drain hole while sliding; water is used to improve the buffering effect.
After the buffering is finished, the second spring can push the cross rod to reset; the first spring can push the anti-collision plate to reset.
As shown in fig. 5 (a crash-proof plate is omitted from the drawing for convenience of structural expression), the protection mechanism may be connected to the body through a link 9. Or the device can be arranged on equipment using the motor and is matched with the motor for use.
The frame is provided with a hollow structure 4. On the one hand, the quality of the protection mechanism is reduced, and on the other hand, the frame is hollowed out, so that certain elasticity is realized, and the anti-collision performance is improved.
As shown in fig. 4, a second buffer structure 5 is arranged in the middle of the frame 2; the second buffer structure comprises 4 buffer rods 51 distributed circumferentially and 4 buffer tubes 51 matched with the buffer rods 51; the front end of the buffer rod 51 is provided with a push block 511; wedge blocks 512 are arranged at two ends of the push block 511 and extend into the buffer tube 52; the buffer rod 51 is sleeved with a third spring 53, and two ends of the third spring 53 are respectively connected with the frame 2 and the push block 511; a push rod 521 is arranged in the buffer tube 52; the push rod 521 is matched with the buffer tube 52, and an inclined surface 522 corresponding to the wedge block 512 is arranged at one end of the push block 511; a water outlet 54 is arranged in the middle of the buffer tube 52; the push rod 521 is sleeved with a fourth spring 55; one end of the fourth spring 55 is connected to the wall of the buffer tube 52, and the other end is connected to the push rod 521.
After the first layer buffering, the second buffer structure provides the second layer buffering, and when the shell received the impact, wedge 512 at push block 511 both ends can make push rod 521 slide along buffer tube 52 through the inclined plane 522 of extrusion push rod 521 to play the effect of buffering, after the buffering, the third spring can promote the buffer beam and reset, and the fourth spring can promote the push rod and reset. The push rod can push the water in the buffer tube to be sprayed out from the water outlet at the same time, and the buffer effect is further achieved.
As shown in fig. 6, the output end of the motor body is provided with a fan blade 6; a protective cover 7 is arranged at the end of the body close to the fan blades; the protective cover is provided with a filter screen 8.
Claims (6)
1. A brushless permanent magnet direct current motor comprises a cylindrical motor body and a protection mechanism, wherein the protection mechanism is arranged on the outer side of the motor body; the anti-collision device comprises two arc-shaped anti-collision plates and a plurality of first buffer structures; the first buffer structure comprises a longitudinal rod, a transverse rod, a first spring, a second spring and a through hole arranged at the end part of the frame; the longitudinal rod is connected with the bottom surface of the anti-collision plate; the first spring is sleeved on the longitudinal rod, and two ends of the first spring are respectively connected with the outer side of the frame and the bottom of the arc-shaped anti-collision plate; the cross rod is arranged in the through hole; the through hole is opened to form a drain hole on the end surface of the frame; an opening matched with the longitudinal rod is formed in the side face of the other end of the through hole in the upward direction; the longitudinal rod can extend into the opening in a sliding mode; the through hole is provided with an annular wall to form an opening matched with the cross rod; the second spring is sleeved on the cross rod, one end of the second spring is connected with the annular wall, and the other end of the second spring is connected with the cross rod; a first cambered surface is formed at the position, close to the opening end, of the cross rod; and a second cambered surface matched with the cross rod is arranged at the bottom of the longitudinal rod.
2. The electric machine of claim 1, wherein the first buffer structure is distributed at both ends of the anti-collision plate.
3. The electric machine of claim 1, wherein the cross bar is provided with an annular step at a proximal open end; one end of the second spring is connected with the annular wall, and the other end of the second spring is connected with the annular step.
4. The motor of claim 1, wherein the frame is provided with an openwork structure.
5. The motor of claim 1, wherein a second buffer structure is arranged in the middle of the frame; the second buffer structure comprises 4 buffer rods distributed circumferentially and 4 buffer tubes matched with the buffer rods; the front end of the buffer rod is provided with a push block; wedge-shaped blocks are arranged at two ends of the push block and extend into the buffer tube; the buffer rod is sleeved with a third spring, and two ends of the third spring are respectively connected with the frame and the push block; a push rod is arranged in the buffer tube; the push rod is matched with the buffer tube, and an inclined plane corresponding to the wedge block is arranged at one end of the push rod close to the push block; a water outlet is arranged in the middle of the buffer tube; the push rod sleeve is provided with a fourth spring; one end of the fourth spring is connected to the wall of the buffer tube, and the other end of the fourth spring is connected with the push rod.
6. The motor of claim 1, wherein the output end of the motor body is provided with fan blades; a protective cover is arranged at the end, close to the fan blades, of the body; the protection casing is equipped with the filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011619847.XA CN112688479B (en) | 2020-12-31 | 2020-12-31 | Brushless permanent magnet direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011619847.XA CN112688479B (en) | 2020-12-31 | 2020-12-31 | Brushless permanent magnet direct current motor |
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| Publication Number | Publication Date |
|---|---|
| CN112688479A CN112688479A (en) | 2021-04-20 |
| CN112688479B true CN112688479B (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011619847.XA Active CN112688479B (en) | 2020-12-31 | 2020-12-31 | Brushless permanent magnet direct current motor |
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| CN (1) | CN112688479B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116317284B (en) * | 2023-05-25 | 2023-08-08 | 长沙长利电气有限公司 | Hairpin formula winding head prevents falling motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB257169A (en) * | 1926-02-10 | 1926-08-26 | Drysdale & Co Ltd | Improvements relating to electrically-driven rotary pumps |
| JPH09327148A (en) * | 1996-06-04 | 1997-12-16 | Tsurumi Mfg Co Ltd | Submergible motor |
| CN108494148A (en) * | 2018-07-09 | 2018-09-04 | 江苏韵凯新能源科技有限公司 | A kind of stepper motor shell structure |
| CN211507366U (en) * | 2020-04-09 | 2020-09-15 | 威海方唯电子有限公司 | Rotary transformer |
| CN211630010U (en) * | 2020-05-13 | 2020-10-02 | 吉林省欣盈科技有限公司 | New energy automobile motor stator shock attenuation frame |
-
2020
- 2020-12-31 CN CN202011619847.XA patent/CN112688479B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB257169A (en) * | 1926-02-10 | 1926-08-26 | Drysdale & Co Ltd | Improvements relating to electrically-driven rotary pumps |
| JPH09327148A (en) * | 1996-06-04 | 1997-12-16 | Tsurumi Mfg Co Ltd | Submergible motor |
| CN108494148A (en) * | 2018-07-09 | 2018-09-04 | 江苏韵凯新能源科技有限公司 | A kind of stepper motor shell structure |
| CN211507366U (en) * | 2020-04-09 | 2020-09-15 | 威海方唯电子有限公司 | Rotary transformer |
| CN211630010U (en) * | 2020-05-13 | 2020-10-02 | 吉林省欣盈科技有限公司 | New energy automobile motor stator shock attenuation frame |
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| Publication number | Publication date |
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| CN112688479A (en) | 2021-04-20 |
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