CN210490614U - Vertical vibration motor - Google Patents
Vertical vibration motor Download PDFInfo
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- CN210490614U CN210490614U CN201921690275.7U CN201921690275U CN210490614U CN 210490614 U CN210490614 U CN 210490614U CN 201921690275 U CN201921690275 U CN 201921690275U CN 210490614 U CN210490614 U CN 210490614U
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Abstract
The utility model belongs to the technical field of the motor, concretely relates to vertical vibrating motor. The not good not enough that leads to the protection level of protection to current vertical vibrating motor's protection seal structure, the utility model discloses a following technical scheme: a vertical vibration motor, comprising: a machine base; a stator core with windings; a rotor; a mounting end cap having a bearing chamber; the cylindrical roller bearing is internally pressed on the end cover of the mounting end; the oil seal is placed on the non-installation side of the cylindrical roller bearing; a wave spring washer located on a non-mounting side of the oil seal; and the elastic check ring for the hole is arranged on the mounting end cover and is positioned on the non-mounting side of the wave spring washer. The utility model has the advantages that: the wave-shaped spring washer can avoid rigid collision between the cylindrical roller bearing and the oil seal and the elastic retainer ring for the hole when the cylindrical roller bearing and the oil seal are loosened.
Description
Technical Field
The utility model belongs to the technical field of the motor, concretely relates to vertical vibrating motor.
Background
In the existing vibration equipment, the horizontal vibration motor has relatively high use frequency, but the horizontal vibration motor cannot meet the use requirements in some application fields, and the installation mode cannot meet the requirements. For this reason, a vertical vibration motor has appeared.
The chinese patent of the invention with the publication number CN106208509B discloses a bolt-free fixed double-flange vertical vibration motor, wherein the outer peripheral surface of a connecting flange is a conical surface, one end of the connecting flange is a connecting end matched with a machine base, and the diameter of the connecting end of the connecting flange is larger than that of the other end thereof so that the motor is pressed and fixed by an external device with an inner conical surface matched with the conical surface. Although this patent scheme is fixed convenient, and the location accuracy is good, is favorable to improving product life and protection level, but is not suitable for the occasion that needs can be dismantled.
The existing vertical vibration motor fixed by flanges and bolts has defects in one or more aspects of sealing protection performance, part processing, complete machine assembly and the like. Like the vertical vibrating motor of current bolt flange, a sealed mode that its bearing adopted is: a bearing chamber is arranged in a motor end cover, a bearing is directly pressed into the end cover bearing chamber, a sealing ring is arranged on the outer side of the bearing chamber and clamped by a snap spring through a hole, and grease in the bearing is prevented from entering the motor. This kind of seal structure, though can play dirt-proof effect to a certain extent, the effect is often not ideal enough, along with the extension of operating time, outside dust still can get into the inside of motor, influences the reliability and the security of vibrating motor work to reduce vibrating motor's life.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the not good not enough that leads to the protection level lower to current vertical vibrating motor's protection seal structure provides a vertical vibrating motor, improves seal structure, promotes barrier propterty. Further, the machining and assembling are simplified.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a vertical vibration motor, comprising:
the engine base is provided with an axle hole, and the flange mounting part is provided with axial mounting holes which are uniformly distributed in the circumferential direction;
the stator core with the winding is pressed in the base;
a rotor including a rotor core and a rotating shaft;
the mounting end cover is assembled at the mounting end of the engine base and provided with a bearing chamber;
the tail end cover is assembled at the non-installation end of the engine base;
the cylindrical roller bearing is internally pressed on the end cover of the mounting end;
the oil seal is placed on the non-installation side of the cylindrical roller bearing;
a wave spring washer located on a non-mounting side of the oil seal;
the elastic check ring for the hole is arranged on the mounting end cover and is positioned on the non-mounting side of the wave-shaped spring washer;
the fixed eccentric component is assembled at the mounting end of the rotating shaft;
the adjustable eccentric component is assembled at the non-installation end of the rotating shaft.
The utility model discloses a vertical vibrating motor has placed wave spring packing ring between oil blanket and hole circlip, and wave spring packing ring can avoid cylindrical roller bearing and oil blanket to produce rigid collision when becoming flexible and hole circlip between, plays the cushioning effect. Preferably, the oil seal is a NILOS oil seal.
As an improvement, the rotating shaft is also provided with an inner ring and a shaft elastic retainer ring, and the inner ring and the shaft elastic retainer ring are positioned on the non-installation side of the cylindrical roller bearing.
As an improvement, the radial clearance between the oil seal and the inner ring is not more than 0.4 mm.
As an improvement, a wiring chamber is further formed on the base, a wiring board is arranged in the wiring chamber, a lead-out hole is formed in the bottom wall of the wiring chamber, and a lead-out wire connected with a winding stator core and the wiring board is arranged in the lead-out hole. The outgoing line is fixed by a copper nut.
As an improvement, a seal groove is formed in the end cover of the mounting end, and an O-shaped seal ring is mounted in the seal groove; the rotating shaft is provided with a sealing groove, and an O-shaped sealing ring is arranged in the sealing groove; a box cover is arranged on the wiring chamber, a sealing groove is formed in the box cover, and an O-shaped sealing ring is arranged in the sealing groove; the protective cover is arranged on the outer side of the tail end cover, a sealing groove is formed in the tail end cover, and an O-shaped sealing ring is installed in the sealing groove. The IP protection performance is improved by arranging the O-shaped sealing ring.
As an improvement, the deep groove ball bearing is arranged in the tail end cover, and two ends of the deep groove ball bearing are fixed by the elastic retainer ring through the middle hole of the retainer ring groove arranged in the tail end cover, so that the through structure is more beneficial to the disassembly and assembly maintenance of the deep groove ball bearing.
As an improvement, the mounting end of the mounting end cover is provided with a dismounting hole which is a threaded hole and is provided with an inner hexagonal flat end fastening screw. And the inner hexagonal flat end set screw is arranged to prevent bearing lubricating grease from overflowing.
As an improvement, a groove is processed at the position of the output shaft of the mounting end cover of the rotating shaft, a V-shaped sealing ring is mounted in the groove and abuts against the mounting end cover, the surface roughness of the side, abutting against the V-shaped sealing ring, of the mounting end cover is not more than 0.8, and lubricating grease is filled between the contact surfaces of the mounting end cover and the V-shaped sealing ring. Because the rotor has the cluster, need to keep contacting between V type sealing washer and the end cover when the recess on the design rotor is moved at the biggest cluster. The surface roughness is ensured, a small amount of lubricating grease is coated, and the friction between the V-shaped sealing ring and the contact surface of the end cover is reduced when the rotor rotates.
As an improvement, the fixed eccentric component comprises a fixed eccentric block and a sheet eccentric block which are fixedly connected through a screw and a locknut, and the fixed eccentric block is positioned in a flat key groove of the rotating shaft through the screw to prevent the fixed eccentric block from moving radially in the operation process due to looseness.
As an improvement, a retainer ring groove is processed at the mounting end of the rotating shaft, and an elastic retainer ring for mounting the shaft in the retainer ring groove is used for preventing the fixed eccentric block from loosening and moving outwards to throw away to cause potential safety hazards.
As an improvement, a key groove which is communicated with the end face is milled at the non-mounting end of the rotating shaft, a circular scale indicating plate is arranged at the mounting end of the key groove, a lug is formed on the circular scale indicating plate and positioned in the key groove, and an elastic check ring for a shaft is arranged on the non-mounting side of the circular scale indicating plate. The key groove is directly communicated with the end face, and the circular scale indication board is easy to assemble; the circular scale indication board is positioned through the convex pieces and the key grooves, so that the circular scale indication board is prevented from generating circumferential displacement; a circlip for the shaft is provided to prevent axial displacement.
As an improvement, the adjustable eccentric assembly comprises an adjustable eccentric assembly and a sheet eccentric block, wherein the adjustable eccentric block is fixedly connected with the locknut through a screw, an indication boss is processed on the adjustable eccentric block, and the indication boss points to scales on the circular scale indication board. Through setting up examination boss and circular scale dial, the vibrational force of adjustment vertical vibration motor non-flange side that can be comparatively convenient, through the different vibrational force direct influence that the angle of adjusting vertical vibration motor upper and lower extreme produced to the various screening effects of circular shale shaker.
As an improvement, the adjustable eccentric block is provided with a fastening hole, and the inner end of the fastening hole is provided with a chip groove.
The utility model discloses a vertical vibrating motor's beneficial effect is: the wave-shaped spring washer is placed between the oil seal and the elastic retainer ring for the hole, and can avoid rigid collision between the cylindrical roller bearing and the oil seal when the cylindrical roller bearing and the oil seal are loosened and the elastic retainer ring for the hole, so that a buffering effect is achieved.
Drawings
Fig. 1 to fig. 3 are schematic structural views of a vertical vibration motor according to a first embodiment of the present invention.
Fig. 4 is a sectional view of a vertical vibration motor according to a first embodiment of the present invention.
Fig. 5 is a schematic structural diagram of the vertical vibration motor according to the first embodiment of the present invention after the protective cover is hidden.
Fig. 6 is a schematic structural diagram of a base of a vertical vibration motor according to a first embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a mounting end cover of a vertical vibration motor according to a first embodiment of the present invention.
Fig. 8 is a schematic structural view of an oil seal of a vertical vibration motor according to a first embodiment of the present invention.
Fig. 9 is a schematic structural view of a wave spring washer of a vertical vibration motor according to a first embodiment of the present invention.
Fig. 10 is a schematic structural view of a fixed eccentric assembly of a vertical vibration motor according to a first embodiment of the present invention.
Fig. 11 is a schematic structural diagram of an adjustable eccentric assembly of a vertical vibration motor according to a first embodiment of the present invention.
Fig. 12 is a schematic structural view of a circular scale indicator of a vertical vibration motor according to a first embodiment of the present invention.
In the figure, 1, a machine base, 11, a wiring chamber, 12, a lead-out hole, 13 and a box cover;
2. a stator core with windings;
3. a rotor;
4. a mounting end assembly 41, a mounting end cover 411, a dismounting hole 42, a cylindrical roller bearing 43, an oil seal 44, a wave spring gasket 45, a circlip for hole 46, an inner ring 47, a circlip for shaft 48 and a V-shaped sealing ring;
5. a fixed eccentric component 51, a fixed eccentric block 52 and a sheet eccentric block;
6. the device comprises a tail end assembly, a tail end cover, a protective cover, a circular scale indication board, a deep groove ball bearing and a tail end assembly, wherein the tail end assembly is 61;
7. the adjustable eccentric component 71, the adjustable eccentric block 711 and the chip groove;
8. a wiring board;
9. and (4) a cable joint.
Detailed Description
The technical solutions of the inventive embodiments of the present invention will be explained and explained below with reference to the drawings of the inventive embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Referring to fig. 1 to 12, the present invention adopts the following technical solutions: a vertical vibration motor, comprising:
the engine base is provided with an axle hole, and the flange mounting part is provided with axial mounting holes which are uniformly distributed in the circumferential direction;
the stator core with the winding is pressed in the base;
a rotor including a rotor core and a rotating shaft;
the mounting end cover is assembled at the mounting end of the engine base and provided with a bearing chamber;
the tail end cover is assembled at the non-installation end of the engine base;
the cylindrical roller bearing is internally pressed on the end cover of the mounting end;
the oil seal is placed on the non-installation side of the cylindrical roller bearing;
a wave spring washer located on a non-mounting side of the oil seal;
the elastic check ring for the hole is arranged on the mounting end cover and is positioned on the non-mounting side of the wave-shaped spring washer;
the fixed eccentric component is assembled at the mounting end of the rotating shaft;
the adjustable eccentric component is assembled at the non-installation end of the rotating shaft.
The utility model discloses a vertical vibrating motor has placed wave spring packing ring between oil blanket and hole circlip, and wave spring packing ring can avoid cylindrical roller bearing and oil blanket to produce rigid collision when becoming flexible and hole circlip between, plays the cushioning effect.
Example one
Referring to fig. 1 to 12, a vertical vibration motor according to a first embodiment of the present invention includes:
the engine base comprises an engine base 1, wherein one end of the engine base 1 is an installation end and forms a flange installation part, the other end of the engine base 1 is a non-installation end, the engine base 1 is provided with an axle hole, and axial installation holes are uniformly distributed in the circumferential direction on the flange installation part;
the stator core 2 with the winding is internally pressed on the base 1;
the rotor 3, the said rotor 3 includes the iron core of rotor 3 and spindle;
a mounting end cap 41, the mounting end cap 41 being assembled to a mounting end of the housing 1, the mounting end cap 41 having a bearing chamber;
the tail end cover 61, the tail end cover 61 is assembled at the non-installation end of the engine base 1;
a cylindrical roller bearing 42, wherein the cylindrical roller bearing 42 is pressed in the mounting end cover 41;
an oil seal 43, the oil seal 43 being placed at the non-mounting end of the cylindrical roller bearing 42;
a wave spring washer 44, the wave spring washer 44 being located on a non-mounting side of the oil seal 43;
a circlip for hole 45, the circlip for hole 45 being provided on the mounting end cap 41 and being located on the non-mounting side of the wave spring washer 44;
the fixed eccentric component 5 is assembled at the installation end of the rotating shaft;
and the adjustable eccentric component 7 is assembled at the non-installation end of the rotating shaft, and the adjustable eccentric component 7 is assembled at the non-installation end of the rotating shaft.
As a modification, the rotating shaft is further provided with an inner ring 46 and a circlip 47 for shaft, and the inner ring 46 and the circlip 47 for shaft are located on the non-mounting side of the cylindrical roller bearing 42.
As a modification, the oil seal 43 includes, in cross section from inside to outside, a horizontal portion, a first vertical portion, an inclined portion, and a second vertical portion. The radial clearance between the horizontal portion of the oil seal 43 and the inner ring 46 is not more than 0.4 mm. Preferably, the oil seal 43 is a NILOS oil seal 43.
As an improvement, a wiring chamber 11 is further formed on the base 1, a wiring board 8 is arranged in the wiring chamber 11, a leading-out hole 12 is formed in the bottom wall of the wiring chamber 11, and a leading-out wire connected with the winding stator core 2 and the wiring board 8 is arranged in the leading-out hole 12. The outgoing line is fixed by a copper nut.
As an improvement, a cable joint 9 is further connected to the machine base 1 in a threaded mode, and the cable joint 9 is communicated with a wiring chamber 11.
As an improvement, the mounting end cover 41 is provided with a sealing groove, and an O-shaped sealing ring is mounted in the sealing groove; the rotating shaft is provided with a sealing groove, and an O-shaped sealing ring is arranged in the sealing groove; a box cover 13 is arranged on the junction chamber 11, a sealing groove is formed in the box cover 13, and an O-shaped sealing ring is arranged in the sealing groove; the outer side of the tail end cover 61 is provided with a protective cover 62, a sealing groove is formed in the tail end cover 61, and an O-shaped sealing ring is installed in the sealing groove. The IP protection performance is improved by arranging the O-shaped sealing ring.
As an improvement, the deep groove ball bearing 64 is installed in the tail end cover 61, and two ends of the deep groove ball bearing 64 are fixed by the elastic retainer ring 45 through the retainer ring groove central hole installed in the tail end cover 61, so that the through structure is more beneficial to the disassembly and assembly maintenance of the deep groove ball bearing 64.
As an improvement, the mounting end of the mounting end cover 41 is provided with a dismounting hole 411, and the dismounting hole 411 is a threaded hole and is provided with a hexagon socket flat end set screw. And the inner hexagonal flat end set screw is arranged to prevent bearing lubricating grease from overflowing. The detachment holes 411 are a pair.
As an improvement, the position of the installation end cover 41 of the rotating shaft that goes out of the shaft is processed with a groove, install the V-shaped seal ring 48 in the groove, the V-shaped seal ring 48 conflicts the installation end cover 41, the surface roughness of the installation end cover 41 and the one side that the V-shaped seal ring 48 conflicts is not more than 0.8, and grease is filled between the contact surfaces of the installation end cover 41 and the V-shaped seal ring 48. Because the rotor 3 has the crosstalk, the V-shaped sealing ring 48 can be contacted with the end cover when the groove on the rotor 3 needs to be kept in the maximum crosstalk when being designed. The surface roughness is ensured, a small amount of lubricating grease is coated, and the friction between the V-shaped sealing ring 48 and the contact surface of the end cover is reduced when the rotor 3 rotates.
As a modification, the V-shaped seal ring 48 includes a block portion and an inclined portion, and the thickness of the block portion is greater than that of the inclined portion.
As a modification, the fixed eccentric assembly 5 comprises a fixed eccentric block 51 and a sheet-shaped eccentric block 52 which are fixedly connected through a screw and a locknut, wherein the fixed eccentric block 51 is positioned in a flat key groove of the rotating shaft through the screw, and the fixed eccentric block 51 is prevented from moving radially during operation due to looseness.
As an improvement, a retainer ring groove is processed at the mounting end of the rotating shaft, and an elastic retainer ring 47 for mounting the shaft in the retainer ring groove prevents the fixed eccentric block 51 from loosening and moving outwards and throwing out to cause potential safety hazards.
As an improvement, a key groove which is communicated with the end face is milled at the non-mounting end of the rotating shaft, a circular scale indicating plate 63 is arranged at the mounting end of the key groove, a protruding plate is formed on the circular scale indicating plate 63 and is positioned in the key groove, and an elastic collar 47 for the shaft is arranged on the non-mounting side of the circular scale indicating plate 63. The key groove is directly communicated with the end face, and the circular scale indication plate 63 is easy to assemble; the round scale indication plate 63 is positioned through the convex pieces and the key grooves, so that the round scale indication plate 63 is prevented from generating circumferential displacement; a shaft circlip 47 is provided to prevent axial displacement.
As an improvement, the adjustable eccentric assembly 7 comprises an adjustable eccentric assembly 7 and an adjustable eccentric block 71 and a sheet eccentric block 52 which are fixedly connected through a screw and a locknut, an indication boss is processed on the adjustable eccentric block 71, and the indication boss points to scales on the circular scale indication board 63. Through setting up examination boss and circular scale dial, the vibrational force of adjustment vertical vibration motor non-flange side that can be comparatively convenient, through the different vibrational force direct influence that the angle of adjusting vertical vibration motor upper and lower extreme produced to the various screening effects of circular shale shaker.
As an improvement, the adjustable eccentric block 71 is provided with a fastening hole, and the inner end of the fastening hole is provided with a chip groove 711.
The embodiment of the utility model provides a vertical vibrating motor's beneficial effect is: the wave-shaped spring washer 44 is placed between the oil seal 43 and the circlip 45 for hole, and the wave-shaped spring washer 44 can prevent the cylindrical roller bearing 42 and the oil seal 43 from generating rigid collision with the circlip 45 for hole when loosening, thereby playing a role of buffering.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above detailed description. Any modification which does not depart from the functional and structural principles of the invention is intended to be included within the scope of the claims.
Claims (10)
1. A vertical vibration motor is characterized in that: the vertical vibration motor includes:
the device comprises a base (1), wherein one end of the base (1) is a mounting end and forms a flange mounting part, the other end of the base (1) is a non-mounting end, the base (1) is provided with a shaft hole, and axial mounting holes are uniformly distributed in the circumferential direction on the flange mounting part;
the stator iron core (2) with the winding is pressed in the base (1);
a rotor (3), the rotor (3) comprising a rotor core and a rotating shaft;
a mounting end cap (41), the mounting end cap (41) being assembled to a mounting end of the housing (1), the mounting end cap (41) having a bearing chamber;
the tail end cover (61), the tail end cover (61) is assembled at the non-installation end of the machine base (1);
a cylindrical roller bearing (42), wherein the cylindrical roller bearing (42) is pressed in the mounting end cover (41);
an oil seal (43), the oil seal (43) being placed on a non-mounting side of the cylindrical roller bearing (42);
a wave spring washer (44), the wave spring washer (44) being located on a non-mounting side of the oil seal (43);
a circlip for hole (45), the circlip for hole (45) being provided on the mounting end cap (41) and being located on the non-mounting side of the wave spring washer (44);
the fixed eccentric component (5), the fixed eccentric component (5) is assembled at the installation end of the rotating shaft;
the adjustable eccentric component (7), the adjustable eccentric component (7) is assembled at the non-installation end of the rotating shaft.
2. A vertical vibration motor according to claim 1, wherein: still be equipped with inner circle (46) and circlip (47) for the axle on the pivot, inner circle (46) and circlip (47) for the axle are located the non-installation side of cylindrical roller bearing (42), radial clearance is being not more than 0.4mm between oil blanket (43) and inner circle (46).
3. A vertical vibration motor according to claim 1, wherein: the winding machine is characterized in that a wiring chamber (11) is further formed on the machine base (1), a wiring board (8) is arranged in the wiring chamber (11), a leading-out hole (12) is formed in the bottom wall of the wiring chamber (11), and a leading-out wire connected with a winding stator core (2) and the wiring board (8) is arranged in the leading-out hole (12).
4. A vertical vibration motor according to claim 3, wherein: the mounting end cover (41) is provided with a sealing groove, and an O-shaped sealing ring is mounted in the sealing groove; the rotating shaft is provided with a sealing groove, and an O-shaped sealing ring is arranged in the sealing groove; a box cover (13) is arranged on the wiring chamber (11), a sealing groove is formed in the box cover (13), and an O-shaped sealing ring is arranged in the sealing groove; the protective cover is arranged on the outer side of the tail end cover (61), a sealing groove is formed in the tail end cover (61), and an O-shaped sealing ring is installed in the sealing groove.
5. A vertical vibration motor according to claim 1, wherein: a deep groove ball bearing (64) is arranged in the tail end cover (61), and two ends of the deep groove ball bearing (64) are fixed through elastic check rings (45) arranged in holes in a check ring groove of the tail end cover (61).
6. A vertical vibration motor according to claim 1, wherein: the mounting end of the mounting end cover (41) is provided with a dismounting hole (411), and the dismounting hole (411) is a threaded hole and is provided with an inner hexagonal flat end fastening screw.
7. A vertical vibration motor according to claim 1, wherein: the installation end cover (41) play axle position of pivot is processed flutedly, installation V type sealing washer (48) in the recess, installation end cover (41) are contradicted in V type sealing washer (48), the surface roughness of the one side that installation end cover (41) contradicted with V type sealing washer (48) is not more than 0.8, fill lubricating grease between the contact surface of installation end cover (41) and V type sealing washer (48).
8. A vertical vibration motor according to claim 1, wherein: the fixed eccentric assembly (5) comprises a fixed eccentric block (51) and a flaky eccentric block (52) which are fixedly connected through a screw and a locknut, and the fixed eccentric block (51) is positioned in a flat key groove of the rotating shaft through the screw; and a retainer ring groove is processed at the mounting end of the rotating shaft, and an elastic retainer ring (47) for mounting the shaft is arranged in the retainer ring groove.
9. A vertical vibration motor according to claim 1, wherein: the non-installation end of pivot is milled and is had the keyway with the terminal surface is direct, the installation end of keyway is equipped with circular scale sign (63), circular scale sign (63) form the lug, the lug is located the keyway, the non-installation side of circular scale sign (63) is equipped with axle circlip (47).
10. A vertical vibration motor according to claim 1, wherein: adjustable eccentric subassembly (7) include adjustable eccentric block (71) and slice eccentric block (52) through screw and locknut rigid coupling including adjustable eccentric subassembly (7), processing one on adjustable eccentric block (71) and instructing the boss, instruct the scale on the directional circular scale sign (63) of boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921690275.7U CN210490614U (en) | 2019-10-10 | 2019-10-10 | Vertical vibration motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921690275.7U CN210490614U (en) | 2019-10-10 | 2019-10-10 | Vertical vibration motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210490614U true CN210490614U (en) | 2020-05-08 |
Family
ID=70509663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921690275.7U Active CN210490614U (en) | 2019-10-10 | 2019-10-10 | Vertical vibration motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210490614U (en) |
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2019
- 2019-10-10 CN CN201921690275.7U patent/CN210490614U/en active Active
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