CN213637338U - Safe permanent magnet drum motor - Google Patents
Safe permanent magnet drum motor Download PDFInfo
- Publication number
- CN213637338U CN213637338U CN202022801821.9U CN202022801821U CN213637338U CN 213637338 U CN213637338 U CN 213637338U CN 202022801821 U CN202022801821 U CN 202022801821U CN 213637338 U CN213637338 U CN 213637338U
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- permanent magnet
- magnet drum
- drum motor
- motor
- supporting base
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Abstract
The utility model belongs to the technical field of electrical equipment, in particular to a safe permanent magnet drum motor, which comprises a permanent magnet drum motor, wherein the front end of the permanent magnet drum motor is provided with a motor protection ring, the front end of the motor protection ring is provided with a rotating shaft protection ring, the inner ring of the rotating shaft protection ring is provided with a driving rotating shaft, the outer ring of the permanent magnet drum motor is provided with a damping sleeve, the rear end of the rear end cover of the motor is provided with a heat dissipation cover, and the damping cushion block can hinder the movement principle of a molecular chain through the interaction between rubber molecules, thereby showing the viscous damping property, simultaneously having the characteristics of lagging, damping and reversible large deformation, thereby having good damping, sound insulation and buffering performances, and having good insulation property, and not generating electricity with the permanent magnet drum motor in the process of damping and buffering the permanent magnet drum motor, thereby improving the safety of the permanent magnet drum motor.
Description
Technical Field
The utility model belongs to the technical field of electrical equipment, concretely relates to safe type permanent-magnet drum motor.
Background
The motor is an electromagnetic device for realizing electric energy conversion or transmission according to the law of electromagnetic induction, and has the main function of generating driving torque as a power source of electric appliances or various machines, the permanent magnet drum motor is composed of a stator magnetic pole, a rotor, a brush, a shell and the like, the stator magnetic pole adopts a permanent magnet, namely permanent magnet steel, the working environment of the existing permanent magnet drum motor is relatively complex, the environments often have certain humidity, high temperature, much dust and corrosion, all the factors cause the permanent magnet drum motor to be more easily damaged, particularly the faults such as overload, short circuit, phase failure, chamber sweeping and the like have the highest frequency, and the permanent magnet drum motor can generate certain vibration in the working and running process, the vibration can cause certain harmful effects such as damage, shaking and the like on the permanent magnet drum motor, although the permanent magnet drum motor also has a certain damping function, but can't accomplish with permanent magnetism cylinder motor's insulation, current permanent magnetism cylinder motor's stability is relatively poor moreover, has certain potential safety hazard during the use.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a safe permanent magnet drum motor, which can buffer the vibration generated by the permanent magnet drum motor during working through the installation of a shock absorption sleeve, further buffer the damage, the shaking and the like of the permanent magnet drum motor caused by the vibration, thereby improving the safety of the permanent magnet drum motor, the shock absorption cushion block can hinder the motion principle of a molecular chain through the interaction between rubber molecules, thereby showing the viscous damping property, and simultaneously has the characteristics of lag, damping and reversible large deformation, thereby having good shock absorption, sound insulation and buffering performances, and the shock absorption cushion block has good insulation property, can not generate electric property with the permanent magnet drum motor in the process of shock absorption and buffering of the permanent magnet drum motor, further improving the safety of the permanent magnet drum motor, the connecting block is used for being in direct contact with the permanent magnet drum motor and the shock absorption sleeve, each group of supporting legs and the corresponding supporting base form a supporting system with a triangular structure.
In order to achieve the above object, the utility model provides a following technical scheme: a safety permanent magnet drum motor comprises a permanent magnet drum motor, wherein a plurality of housing fixing blocks with rectangular structures are arranged on the outer ring of the permanent magnet drum motor, fixing block bolts are arranged on the inner sides of the housing fixing blocks, a wire outlet box with a rectangular structure is arranged on the outer ring of the permanent magnet drum motor, a motor protection ring is arranged at the front end of the permanent magnet drum motor, a rotating shaft protection ring is arranged at the front end of the motor protection ring, an active rotating shaft is arranged at the inner ring of the rotating shaft protection ring, a damping sleeve is arranged on the outer ring of the permanent magnet drum motor, a damping sleeve inner groove is arranged on the inner side of the damping sleeve, a motor rear end cover is arranged at the rear end of the permanent magnet drum motor, a heat dissipation cover is arranged at the rear end of the motor rear end cover, a dust prevention layer is arranged on the inner side of the motor rear, the inner side of the supporting base is provided with a supporting base inner groove, the lower end of the permanent magnet drum motor is provided with a connecting block, and the lower end of the connecting block is provided with supporting legs.
Preferably, the motor protection ring and the rotating shaft protection ring are both arranged in a cylindrical structure, the diameter of the motor protection ring is larger than that of the rotating shaft protection ring, and the motor protection ring and the rotating shaft protection ring are arranged in a concentric circle; through the installation setting of motor guard circle and pivot guard circle, the motor guard circle is used for the protection to the motor output, and the pivot guard circle is used for the protection to initiative pivot.
Preferably, the damping sleeve is of a cylindrical structure, a cylindrical through hole is reserved in the middle of the damping sleeve, the damping sleeve is arranged at the upper end of the connecting block, the size of the inner ring of the damping sleeve is matched with that of the outer ring of the permanent magnet roller motor, and the length of the damping sleeve is smaller than that of the permanent magnet roller motor; through the installation setting of shock attenuation cover, can cushion the vibrations that permanent magnet drum motor during operation produced, and then cushion permanent magnet drum motor because of the damage that vibrations produced, rock etc to improve the security that permanent magnet drum motor used.
Preferably, the inner groove of the damping sleeve is a groove body with a cylindrical structure, damping cushion blocks are arranged on the inner side of the inner groove of the damping sleeve, the damping cushion blocks are rubber cushion blocks with a spiral structure, and the damping cushion blocks are provided with a plurality of groups; the cushion blocks can hinder the movement principle of a molecular chain through the interaction between rubber molecules, so that the viscous damping performance is shown, the characteristics of hysteresis, damping and reversible large deformation can be realized, the damping cushion block has good damping performance, sound insulation performance and buffering performance, the cushion blocks have good insulation performance, and in the process of damping and buffering the permanent magnet drum motor, the cushion blocks cannot generate electric property with the permanent magnet drum motor, and the use safety of the permanent magnet drum motor is further improved.
Preferably, the heat dissipation covers are arranged in a triangular structure, every two heat dissipation covers are in a group and are provided with a plurality of groups, the two heat dissipation covers in the same group are arranged on the same horizontal plane, the groups are vertically arranged from top to bottom, and the heat dissipation openings of the heat dissipation covers are all arranged downwards; through the installation setting of radiator, can discharge the steam that permanent magnet drum motor operation in-process produced, the impurity that drops in can avoiding service environment gets into the radiator by the heat dissipation opening that sets up downwards, and then avoids these impurity that drop to get into permanent magnet drum motor to improve the security that permanent magnet drum motor used.
Preferably, the dustproof layer is arranged in a cylindrical structure, the inner ring of the dustproof layer is provided with a dustproof net, and the dustproof net is arranged in a circular structure; the dust-proof layer is used for fixing and supporting the dust screen, and dust in the use environment can be prevented from entering the permanent magnet roller motor through the installation setting of the dust screen, so that the influence of the dust on the permanent magnet roller motor is avoided, and the use safety of the permanent magnet roller motor is improved.
Preferably, the supporting base inner grooves are rectangular groove bodies, four supporting base inner grooves are formed in total, every two supporting base inner grooves are in one group, the two supporting base inner grooves in the same group are symmetrically arranged at the left end and the right end of the supporting base, four fixing connecting holes are formed in the inner side of each supporting base inner groove, the fixing connecting holes are through holes of cylindrical structures, and the height of each supporting base inner groove is larger than that of the fixing bolt; the supporting base is used for fixing and supporting the whole device, fixing bolts sequentially penetrate through the fixing connecting holes to fix the whole device, and the fixing bolts cannot expose the supporting base inner grooves due to the fact that the height of the supporting base inner grooves is larger than that of the fixing bolts.
Preferably, the supporting legs are of a parallelogram structure, four supporting legs are provided, each two supporting legs are in one group, the two supporting legs in the same group are symmetrically arranged at the upper end of the supporting base, one group is arranged at the lower end of the damping sleeve, the other group is arranged at the lower end of the permanent magnet drum motor, the length of the supporting leg arranged at the lower end of the permanent magnet drum motor is greater than that of the supporting leg arranged at the lower end of the damping sleeve, and the upper end of each supporting leg is provided with a connecting block with an arc structure; the connecting block is used for being in direct contact with the permanent magnet roller motor and the damping sleeve, and each group of supporting legs and the corresponding supporting base form a supporting system with a triangular structure.
Compared with the prior art, the beneficial effects of the utility model are that: the shock absorption cushion block can interfere with the movement principle of a molecular chain through the interaction between rubber molecules, thereby showing viscous damping property, and simultaneously has the characteristics of hysteresis, damping and reversible large deformation, thereby having good shock absorption, sound insulation and buffering properties, and the shock absorption cushion block has good insulation property, can not generate electricity with the permanent magnet roller motor in the shock absorption and buffering processes of the permanent magnet roller motor, further improving the use safety of the permanent magnet roller motor, hot air generated in the running process of the permanent magnet roller motor can be discharged through the installation of the heat dissipation cover, and the downward heat dissipation opening can prevent impurities falling in a use environment from entering the heat dissipation cover, and then avoid these impurity that drop to get into permanent magnet drum motor, thereby improve the security that permanent magnet drum motor used, the dust proof layer is used for fixed and support to the dust screen, installation setting through the dust screen, can avoid the dust among the service environment to get into permanent magnet drum motor, and then avoid these dusts to the influence that causes of permanent magnet drum motor, thereby improve the security that permanent magnet drum motor used, the connecting block is used for with permanent magnet drum motor, the direct contact of shock attenuation cover, each supporting legs of group all constitutes the braced system of triangle-shaped structure with corresponding support base.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a perspective schematic structural view of a permanent magnet drum motor according to the present invention;
FIG. 3 is a schematic cross-sectional view of the shock-absorbing sleeve of the present invention;
fig. 4 is a rear view structural schematic diagram of the rear end cover of the motor of the present invention;
fig. 5 is a front view of the rear end cover of the motor according to the present invention;
FIG. 6 is a schematic structural view of the support base of the present invention;
in the figure: 1. a permanent magnet drum motor; 2. a shell fixing block; 3. a fixed block bolt; 4. an outlet box; 5. a motor protection ring; 6. a rotating shaft protection ring; 7. a driving rotating shaft; 8. a shock-absorbing sleeve; 9. an inner groove of the damping sleeve; 10. damping cushion blocks; 11. a motor rear end cover; 12. a heat dissipation cover; 13. a dust-proof layer; 14. a dust screen; 15. a support base; 151. supporting an inner groove of the base; 152. fixing the connecting hole; 153. supporting legs; 154. and (4) connecting the blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-6, the present invention provides the following technical solutions: a safety permanent magnet drum motor comprises a permanent magnet drum motor 1, wherein a plurality of housing fixing blocks 2 with a rectangular structure are arranged on the outer ring of the permanent magnet drum motor 1, fixing block bolts 3 are arranged on the inner sides of the housing fixing blocks 2, a wire outlet box 4 with a rectangular structure is arranged on the outer ring of the permanent magnet drum motor 1, a motor protection ring 5 is arranged at the front end of the permanent magnet drum motor 1, a rotating shaft protection ring 6 is arranged at the front end of the motor protection ring 5, a driving rotating shaft 7 is arranged on the inner ring of the rotating shaft protection ring 6, a damping sleeve 8 is arranged on the outer ring of the permanent magnet drum motor 1, a damping sleeve inner groove 9 is arranged on the inner side of the damping sleeve 8, a motor rear end cover 11 is arranged at the rear end of the permanent magnet drum motor 1, a heat dissipation cover 12 is arranged at the rear end of the motor rear end cover 11, and a, the lower extreme of permanent magnet drum motor 1 is provided with support base 15 of rectangle structure, the inboard of supporting base 15 is provided with support base inside groove 151, the lower extreme of permanent magnet drum motor 1 is provided with connecting block 154, the lower extreme of connecting block 154 is provided with supporting legs 153.
Specifically, the motor protection ring 5 and the rotating shaft protection ring 6 are both arranged in a cylindrical structure, the diameter of the motor protection ring 5 is larger than that of the rotating shaft protection ring 6, and the motor protection ring 5 and the rotating shaft protection ring 6 are arranged in a concentric circle manner; through the installation setting of motor guard circle 5 and pivot guard circle 6, motor guard circle 5 is used for the protection to the motor output, and pivot guard circle 6 is used for the protection to initiative pivot 7.
Specifically, the damping sleeve 8 is of a cylindrical structure, a cylindrical through hole is reserved in the middle, the damping sleeve 8 is installed at the upper end of the connecting block 154, the size of the inner ring of the damping sleeve 8 is matched with the size of the outer ring of the permanent magnet drum motor 1, and the length of the damping sleeve 8 is smaller than that of the permanent magnet drum motor 1; through the installation setting of shock attenuation cover 8, can cushion the vibrations that permanent magnet drum motor 1 during operation produced, and then cushion permanent magnet drum motor 1 because of the damage that vibrations produced, rock etc to improve the security that permanent magnet drum motor 1 used.
Specifically, the damping sleeve inner groove 9 is a groove body with a cylindrical structure, the inner side of the damping sleeve inner groove 9 is provided with a damping cushion block 10, the damping cushion block 10 is a rubber cushion block with a spiral structure, and the damping cushion blocks 10 are provided with a plurality of groups; cushion block 10 can hinder the motion principle of molecular chain through rubber intermolecular interact to demonstrate the stickness damping nature, have hysteresis simultaneously moreover, the characteristics of damping and can reversible big deformation, therefore have good shock attenuation, syllable-dividing and buffer performance, cushion block 10 has good insulating properties moreover, is carrying out the in-process that the shock attenuation was cushioned to permanent magnet drum motor 1, can not produce the electrical property with permanent magnet drum motor 1, and then improves the security that permanent magnet drum motor 1 used.
Specifically, the heat dissipation covers 12 are arranged in a triangular structure, each two heat dissipation covers are arranged in a group and are provided with a plurality of groups, two heat dissipation covers 12 in the same group are arranged on the same horizontal plane, the groups are vertically arranged from top to bottom, and heat dissipation openings of the heat dissipation covers 12 are all arranged downwards; through the installation setting of heat dissipation cover 12, can discharge the steam that permanent magnet drum motor 1 operation in-process produced, the heat dissipation opening of setting down can avoid the impurity that drops to get into heat dissipation cover 12 in the service environment, and then avoids these impurity that drop to get into permanent magnet drum motor 1 to improve the security that permanent magnet drum motor 1 used.
Specifically, the dustproof layer 13 is arranged in a cylindrical structure, the inner ring of the dustproof layer 13 is provided with a dustproof net 14, and the dustproof net 14 is arranged in a circular structure; dust layer 13 is used for fixed and the support to dust screen 14, and through the installation setting of dust screen 14, the dust that can avoid among the service environment gets into permanent magnet drum motor 1, and then avoids these dusts to permanent magnet drum motor 1's influence that causes to improve the security that permanent magnet drum motor 1 used.
Specifically, the supporting base inner grooves 151 are rectangular grooves, four in number, each two are a group, the two supporting base inner grooves 151 in the same group are symmetrically arranged at the left end and the right end of the supporting base 15, the inner side of each supporting base inner groove 151 is provided with four fixing connection holes 152, the fixing connection holes 152 are through holes with cylindrical structures, and the height of the supporting base inner grooves 151 is greater than that of the fixing bolts; the supporting base 15 is used for fixing and supporting the whole device, and the fixing bolt passes through the fixing connection holes 152 in sequence to fix the whole device, and the fixing bolt does not expose the supporting base inner groove 151 because the height of the supporting base inner groove 151 is greater than that of the fixing bolt.
Specifically, the support legs 153 are of a parallelogram structure, four support legs are provided, each two support legs are in one group, two support legs 153 in the same group are symmetrically installed at the upper end of the support base 15, one group is installed at the lower end of the damping sleeve 8, the other group is installed at the lower end of the permanent magnet drum motor 1, the length of the support leg 153 installed at the lower end of the permanent magnet drum motor 1 is greater than that of the support leg 153 installed at the lower end of the damping sleeve 8, and the upper end of each support leg 153 is provided with a connecting block 154 of an arc structure; the connecting block 154 is used for directly contacting with the permanent magnet drum motor 1 and the damping sleeve 8, and each group of supporting legs 153 and the corresponding supporting base 15 form a supporting system with a triangular structure.
The working principle and the using process of the invention are as follows: when in use, the supporting base 15 is used for fixing and supporting the whole device, the fixing bolt sequentially passes through the fixing connecting holes 152 to realize the fixing of the whole device, the height of the supporting base inner groove 151 is greater than that of the fixing bolt, so that the fixing bolt can not expose out of the supporting base inner groove 151, the connecting block 154 is used for being in direct contact with the permanent magnet drum motor 1 and the damping sleeve 8, each group of supporting legs 153 and the corresponding supporting base 15 form a supporting system with a triangular structure, the motor protecting ring 5 and the rotating shaft protecting ring 6 are arranged, the motor protecting ring 5 is used for protecting the output end of the motor, the rotating shaft protecting ring 6 is used for protecting the active rotating shaft 7, the vibration generated during the working of the permanent magnet drum motor 1 can be buffered through the installation of the damping sleeve 8, and further the damage, the shaking and the like of the permanent magnet drum motor 1 caused by the vibration can, thereby improving the safety of the permanent magnet drum motor 1, the shock absorption cushion block 10 can hinder the movement principle of a molecular chain through the interaction between rubber molecules, thereby showing viscous damping property, and simultaneously having the characteristics of hysteresis, damping and reversible large deformation, thereby having good shock absorption, sound insulation and buffering properties, and the shock absorption cushion block 10 has good insulation property, and can not generate electricity with the permanent magnet drum motor 1 in the process of shock absorption and buffering of the permanent magnet drum motor 1, thereby improving the safety of the permanent magnet drum motor 1, hot gas generated in the operation process of the permanent magnet drum motor 1 can be discharged through the installation of the heat dissipation cover 12, the downward heat dissipation opening can prevent impurities falling in the use environment from entering the heat dissipation cover 12, and further prevent the falling impurities from entering the permanent magnet drum motor 1, thereby improving the safety of the permanent magnet drum motor 1, dust layer 13 is used for fixed and the support to dust screen 14, and through the installation setting of dust screen 14, the dust that can avoid among the service environment gets into permanent magnet drum motor 1, and then avoids these dusts to permanent magnet drum motor 1's influence that causes to improve the security that permanent magnet drum motor 1 used.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a safe type permanent magnet drum motor which characterized in that: comprises a permanent magnet drum motor (1), wherein a plurality of outer fixing blocks (2) with a rectangular structure are arranged on the outer ring of the permanent magnet drum motor (1), fixing block bolts (3) are arranged on the inner sides of the outer fixing blocks (2), a wire outlet box (4) with a rectangular structure is arranged on the outer ring of the permanent magnet drum motor (1), a motor protection ring (5) is arranged at the front end of the permanent magnet drum motor (1), a rotating shaft protection ring (6) is arranged at the front end of the motor protection ring (5), an active rotating shaft (7) is arranged at the inner ring of the rotating shaft protection ring (6), a damping sleeve (8) is arranged on the outer ring of the permanent magnet drum motor (1), a damping sleeve inner groove (9) is arranged on the inner side of the damping sleeve (8), a motor rear end cover (11) is arranged at the rear end of the permanent magnet drum motor (1), and a heat dissipation cover (12) is, the inner side of the motor rear end cover (11) is provided with a dustproof layer (13), the lower end of the permanent magnet drum motor (1) is provided with a supporting base (15) with a rectangular structure, an inner supporting base groove (151) is formed in the inner side of the supporting base (15), the lower end of the permanent magnet drum motor (1) is provided with a connecting block (154), and the lower end of the connecting block (154) is provided with supporting legs (153).
2. The safety permanent magnet drum motor according to claim 1, wherein: the motor guard ring (5) and the rotating shaft guard ring (6) are both arranged in a cylindrical structure, the diameter of the motor guard ring (5) is larger than that of the rotating shaft guard ring (6), and the motor guard ring (5) and the rotating shaft guard ring (6) are arranged in a concentric circle mode.
3. The safety permanent magnet drum motor according to claim 1, wherein: shock attenuation cover (8) set up for cylindrical structure, leave columniform through-hole in the middle of, install in the position of connecting block (154) upper end shock attenuation cover (8), the size of shock attenuation cover (8) inner circle and the size phase-match of permanent magnet drum motor (1) outer lane, the length of shock attenuation cover (8) is less than the length of permanent magnet drum motor (1).
4. The safety permanent magnet drum motor according to claim 1, wherein: damping sleeve inside groove (9) are the cell body of cylindrical structure, and the inboard of damping sleeve inside groove (9) is provided with cushion (10), and cushion (10) are helical structure's rubber cushion, and cushion (10) are provided with the multiunit altogether.
5. The safety permanent magnet drum motor according to claim 1, wherein: the heat dissipation covers (12) are arranged in a triangular structure, every two heat dissipation covers are in a group and are provided with a plurality of groups, the two heat dissipation covers (12) in the same group are arranged on the same horizontal plane, the groups are vertically arranged from top to bottom, and heat dissipation openings of the heat dissipation covers (12) are all arranged downwards.
6. The safety permanent magnet drum motor according to claim 1, wherein: the dustproof layer (13) is arranged in a cylindrical structure, the inner ring of the dustproof layer (13) is provided with a dustproof net (14), and the dustproof net (14) is arranged in a circular structure.
7. The safety permanent magnet drum motor according to claim 1, wherein: the supporting base inner grooves (151) are rectangular groove bodies, the number of the supporting base inner grooves (151) is four, every two supporting base inner grooves are in one group, the two supporting base inner grooves (151) in the same group are symmetrically arranged at the left end and the right end of the supporting base (15), the inner side of each supporting base inner groove (151) is provided with four fixing connecting holes (152), the fixing connecting holes (152) are through holes of a cylindrical structure, and the height of each supporting base inner groove (151) is larger than that of a fixing bolt.
8. The safety permanent magnet drum motor according to claim 1, wherein: the supporting legs (153) are of a parallelogram structure, the total number of the supporting legs is four, every two supporting legs are a group, two supporting legs (153) of the same group are symmetrically arranged at the upper end of the supporting base (15), one group of the supporting legs is arranged at the lower end of the damping sleeve (8), the other group of the supporting legs is arranged at the lower end of the permanent magnet roller motor (1), the length of the supporting legs (153) at the lower end of the permanent magnet roller motor (1) is greater than that of the supporting legs (153) at the lower end of the damping sleeve (8), and the upper end of each supporting leg (153) is provided with a connecting block (154) of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022801821.9U CN213637338U (en) | 2020-11-27 | 2020-11-27 | Safe permanent magnet drum motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022801821.9U CN213637338U (en) | 2020-11-27 | 2020-11-27 | Safe permanent magnet drum motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213637338U true CN213637338U (en) | 2021-07-06 |
Family
ID=76637021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022801821.9U Expired - Fee Related CN213637338U (en) | 2020-11-27 | 2020-11-27 | Safe permanent magnet drum motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213637338U (en) |
-
2020
- 2020-11-27 CN CN202022801821.9U patent/CN213637338U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210706 Termination date: 20211127 |