CN220915008U - Linear stepping motor capable of reducing vibration and noise - Google Patents
Linear stepping motor capable of reducing vibration and noise Download PDFInfo
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- CN220915008U CN220915008U CN202322405722.2U CN202322405722U CN220915008U CN 220915008 U CN220915008 U CN 220915008U CN 202322405722 U CN202322405722 U CN 202322405722U CN 220915008 U CN220915008 U CN 220915008U
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- 210000000078 claw Anatomy 0.000 claims description 17
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
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Abstract
The utility model discloses a linear stepping motor capable of reducing vibration and noise, which comprises a shell, a front end cover, a rotor, a lead screw and a stator framework, wherein the front end cover is arranged on the shell; the shell and the front end cover are surrounded to form a containing cavity for containing the rotor and the stator framework; the stator framework is sleeved on the periphery of the rotor; the lead screw is in threaded fit with the rotor, and penetrates through the front end cover; the inner side surface of the front end cover is provided with a protruding limiting boss, and the outer peripheral surface of the limiting boss is matched with the inner peripheral surface of the stator framework. According to the linear stepping motor capable of reducing vibration and noise, the limiting boss is arranged on the front end cover and is matched with the inner peripheral surface of the stator framework, so that coaxiality of the stator framework, the front end cover and the rotor is limited, vibration and noise generated when the linear stepping motor moves linearly are reduced, and product quality of the linear stepping motor is improved.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a linear stepping motor capable of reducing vibration and noise.
Background
A linear stepping motor, or a linear stepping motor, is one of motors capable of converting a circular motion of a rotor into an axial motion of a screw, and is widely used in fields of industrial robots, office automation machines such as printers, and the like. The linear stepping motor mainly comprises a rotor, a stator and a mounting seat, wherein a bearing is arranged in the mounting seat, a lead screw is arranged in the rotor, the end part of the lead screw is connected with an inner hole of the bearing, and the lead screw is enabled to linearly reciprocate along the axial direction along with the rotation of the rotor. In the assembly process of a plurality of parts of the traditional linear stepping motor, the coaxiality of a stator and a rotor is difficult to ensure, and the motor is easy to vibrate and generate noise in the use process.
Disclosure of utility model
The technical problems to be solved by the utility model are as follows: provided is a linear stepping motor capable of reducing vibration and noise.
In order to solve the technical problems, the utility model adopts the following technical scheme: a linear stepping motor capable of reducing vibration and noise comprises a shell, a front end cover, a rotor, a lead screw and a stator framework; the shell and the front end cover are surrounded to form a containing cavity for containing the rotor and the stator framework; the stator framework is sleeved on the periphery of the rotor; the lead screw is in threaded fit with the rotor, and penetrates through the front end cover; the inner side surface of the front end cover is provided with a protruding limiting boss, and the outer peripheral surface of the limiting boss is matched with the inner peripheral surface of the stator framework.
Further, the shell is provided with a plurality of clamping claws, and the front end cover is provided with clamping grooves matched with the clamping claws.
Further, the device further comprises a mounting plate, at least one mounting hole is formed in the mounting plate, the mounting plate is arranged between the shell and the front end cover, and a through groove for the clamping jaw to pass through is formed in the mounting plate.
Further, the contact surface of the front end cover and the mounting plate is respectively provided with a positioning hole and a positioning lug matched with the positioning hole.
Further, a limiting hole is formed in the mounting plate, and the stator framework is matched with the inner peripheral surface of the limiting hole.
Further, a protruding limiting piece is arranged on the outer peripheral surface of the lead screw, a limiting groove matched with the limiting piece is arranged on the front end cover, and the extending direction of the limiting groove is parallel to the axial direction of the lead screw.
Further, the limiting piece is in interference fit or threaded connection with the lead screw.
Further, the limiting piece is a pin shaft, and the lead screw is provided with a pin hole for the limiting piece to pass through.
Further, the rotor comprises a supporting piece and a permanent magnet which are sequentially sleeved from inside to outside, protruding limiting blocks are respectively arranged on the outer peripheral surfaces of two ends of the supporting piece, and limiting pits matched with the limiting blocks are arranged on the permanent magnet.
Further, a plurality of limiting blocks are respectively arranged at two ends of the supporting piece, and the limiting blocks are uniformly distributed around the circumference of the supporting piece.
The utility model has the beneficial effects that: according to the linear stepping motor capable of reducing vibration and noise, the limiting boss is arranged on the front end cover and is matched with the inner peripheral surface of the stator framework, so that coaxiality of the stator framework, the front end cover and the rotor is limited, vibration and noise generated when the linear stepping motor moves linearly are reduced, and product quality of the linear stepping motor is improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a linear stepper motor according to a first embodiment of the present utility model;
Fig. 2 is a cross-sectional view of a linear stepper motor according to a first embodiment of the present utility model;
Fig. 3 is an exploded view of a linear stepper motor according to a first embodiment of the present utility model;
fig. 4 is an exploded view of a front end cover, a mounting plate and a stator frame in a linear stepper motor according to a first embodiment of the present utility model;
FIG. 5 is an exploded view of a front end cap, lead screw and stop member of a linear stepper motor according to a first embodiment of the present utility model;
Fig. 6 is an exploded view of a rotor in a linear stepping motor according to a first embodiment of the present utility model.
Description of the reference numerals:
1. A housing; 11. a receiving chamber; 12. a claw;
2. A front end cover; 21. a limit boss; 22. a clamping groove; 23. positioning the protruding blocks; 24. a limit groove;
3. A rotor; 31. a support; 311. a limiting block; 32. a permanent magnet; 321. limiting pits;
4. A lead screw; 41. a pin hole;
5. A stator skeleton;
6. a mounting plate; 61. a mounting hole; 62. a through groove; 63. positioning holes; 64. a limiting hole;
7. And a limiting piece.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 6, a linear stepping motor capable of reducing vibration and noise includes a housing 1, a front cover 2, a rotor 3, a lead screw 4, and a stator frame 5; the housing 1 and the front end cover 2 are surrounded to form a containing cavity 11 for containing the rotor 3 and the stator framework 5; the stator framework 5 is sleeved on the periphery of the rotor 3; the lead screw 4 is in threaded fit with the rotor 3, and the lead screw 4 penetrates through the front end cover 2; the inner side surface of the front end cover 2 is provided with a protruding limiting boss 21, and the outer peripheral surface of the limiting boss 21 is matched with the inner peripheral surface of the stator framework 5.
From the above description, the beneficial effects of the utility model are as follows: according to the linear stepping motor capable of reducing vibration and noise, the limiting boss 21 is arranged on the front end cover 2 and is matched with the inner peripheral surface of the stator framework 5, so that coaxiality of the stator framework 5, the front end cover 2 and the rotor 3 is limited, vibration and noise generated when the linear stepping motor moves linearly are reduced, and product quality of the linear stepping motor is improved.
Further, the housing 1 is provided with a plurality of claws 12, and the front end cover 2 is provided with a clamping groove 22 matched with the claws 12.
As can be seen from the above description, the connection structure of the housing 1 and the front end cover 2 is simple, convenient to manufacture and assemble, and beneficial to reducing the manufacturing and assembling costs of the linear stepping motor.
Further, the device also comprises a mounting plate 6, wherein at least one mounting hole 61 is formed in the mounting plate 6, the mounting plate 6 is arranged between the housing 1 and the front end cover 2, and a through groove 62 for the clamping jaw 12 to pass through is formed in the mounting plate 6.
As can be seen from the above description, the present linear stepping motor can be mounted at a preset mounting position through the mounting plate 6; the mounting plate 6 is simple in assembly mode, and is beneficial to improving the assembly efficiency of the linear stepping motor.
Further, the contact surface between the front end cover 2 and the mounting plate 6 is respectively provided with a positioning hole 63 and a positioning protruding block 23 matched with the positioning hole 63.
As can be seen from the above description, the positioning protrusion 23 cooperates with the positioning hole 63 to limit the relative positions of the mounting plate 6 and the front end cover 2, so that the mounting plate 6 is aligned with the front end cover 2 accurately.
Further, the mounting plate 6 is provided with a limiting hole 64, and the stator frame 5 is adapted to the inner circumferential surface of the limiting hole 64.
As can be seen from the above description, the inner circumferential surface of the limiting hole 64 and the stator frame 5 are adapted to limit the relative positions of the mounting plate 6 and the stator frame 5, so as to further improve the position accuracy of the stator frame 5 and reduce the vibration and noise generated during the use of the linear stepping motor.
Further, a protruding limiting piece 7 is provided on the outer circumferential surface of the lead screw 4, a limiting groove 24 matched with the limiting piece 7 is provided on the front end cover 2, and the extending direction of the limiting groove 24 is parallel to the axial direction of the lead screw 4.
As can be seen from the above description, the limiting member 7 cooperates with the limiting groove 24 on the front end cover 2 to limit the movement of the lead screw 4, so that the lead screw 4 can only slide linearly along the axial direction thereof, thereby preventing the lead screw 4 from swinging or rotating due to the influence of the rotor 3, and improving the movement accuracy of the lead screw 4 and the product quality of the linear stepping motor.
Further, the limiting piece 7 is in interference fit or threaded connection with the lead screw 4.
It will be appreciated from the above description that the manner in which the stop 7 is connected to the lead screw 4 may be selected according to the actual use requirements and production conditions.
Further, the limiting member 7 is a pin shaft, and the lead screw 4 is provided with a pin hole 41 through which the limiting member 7 passes.
From the above description, the limiting member 7 has a simple structure and is easy to assemble.
Further, the rotor 3 includes a support member 31 and a permanent magnet 32 that are sequentially sleeved from inside to outside, protruding limiting blocks 311 are respectively disposed on the outer peripheral surfaces of two ends of the support member 31, and limiting pits 321 that are matched with the limiting blocks 311 are disposed on the permanent magnet 32.
As is apparent from the above description, the stopper 311 and the stopper recess 321 cooperate to restrict the relative positions of the support 31 and the permanent magnet 32, preventing the support 31 and the permanent magnet 32 from being separated.
Further, two ends of the supporting member 31 are respectively provided with a plurality of limiting blocks 311, and the limiting blocks 311 are uniformly distributed around the circumference of the supporting member 31.
As can be seen from the above description, the plurality of limiting blocks 311 can increase the connection strength between the support member 31 and the permanent magnet 32, and the plurality of limiting blocks 311 are uniformly distributed around the circumference of the support member 31 to uniformly stress the support member 31 and the permanent magnet 32.
Referring to fig. 1 to 6, a first embodiment of the present utility model is as follows: a linear stepping motor capable of reducing vibration and noise comprises a shell 1, a front end cover 2, a rotor 3, a lead screw 4 and a stator framework 5; the housing 1 and the front end cover 2 enclose a housing cavity 11 for housing the rotor 3 and the stator frame 5; the stator framework 5 is sleeved on the periphery of the rotor 3; the lead screw 4 is in threaded fit with the rotor 3, and the lead screw 4 penetrates through the front end cover 2; the inner side surface of the front end cover 2 is provided with a convex limit boss 21, and the outer circumferential surface of the limit boss 21 is matched with the inner circumferential surface of the stator framework 5. Specifically, the housing 1 is cylindrical, and the housing 1, the rotor 3, and the lead screw 4 are coaxially disposed. The front cover 2 closes one end opening of the housing 1. The stator frame 5 includes a cylindrical body having one end opened, and three annular side plates provided at intervals around the outer periphery of the body. The edge of one end of the shell 1 far away from the front end cover 2 is bent inwards to extend to form a limiting ring edge for limiting the stator framework 5, and one closed end of the cylinder body of the stator framework 5 is exposed to a hollow area of the limiting ring edge. The limiting boss 21 is annular corresponding to the cylinder body of the stator framework 5, and the limiting boss 21 and the lead screw 4 are coaxially arranged. It is easy to understand that the rotor 3 is coaxially arranged with the front end cover 2 through the lead screw 4 and the limiting piece 7, and the front end cover 2 is coaxially arranged with the stator framework 5 through the limiting boss 21, so that the coaxiality of the stator framework 5, the front end cover 2 and the rotor 3 is limited, and the vibration and noise generated during the working of the linear stepping motor are reduced.
Preferably, as shown in fig. 1 and 3, the housing 1 is provided with a plurality of claws 12, and the front end cover 2 is provided with clamping grooves 22 matched with the claws 12. Specifically, the claw 12 is formed by convexly bending a partial region of the housing 1 near one end edge of the front cover 2. The cross section of the claw 12 is L-shaped. The shape of the clamping groove 22 is adapted to the shape of the clamping jaw 12. The number of the clamping claws 12 is four, and the four clamping claws 12 are uniformly distributed around the circumference of the shell 1. In other embodiments, the number of jaws 12 may be set to two, three or more; the clamping jaw 12 can be provided with other shapes, and the clamping groove 22 is provided with a shape which is matched with the clamping jaw 12; or it is also possible that the housing 1 is fixedly connected to the front end cap 2 by means of screws.
Preferably, as shown in fig. 1, the linear stepper motor further includes a mounting plate 6, at least one mounting hole 61 is provided on the mounting plate 6, the mounting plate 6 is provided between the housing 1 and the front end cover 2, and a through slot 62 for passing through the claw 12 is provided on the mounting plate 6. Specifically, the two sides of the mounting plate 6 extend outwards to form side wings, and the two side wings are respectively provided with a mounting hole 61, so that a user can fixedly mount the linear stepping motor at a preset position through the mounting holes 61 on the mounting plate 6 of the linear stepping motor. The number of the clamping claws 12, the through slots 62 and the clamping slots 22 are arranged in a one-to-one correspondence. After the plurality of claws 12 pass through the through grooves 62 and are hooked on the clamping grooves 22, the housing 1 and the front end cover 2 limit the movement of the mounting plate 6 in the axial direction of the lead screw 4, and the plurality of claws 12 limit the rotation action of the mounting plate 6 around the axial direction of the lead screw 4 and the movement of the mounting plate 6 in the radial direction of the lead screw 4, so that the mounting plate 6 is completely fixed between the housing 1 and the front end cover 2.
Preferably, as shown in fig. 4, the contact surface between the front end cover 2 and the mounting plate 6 is provided with positioning holes 63 and positioning protrusions 23 matching the positioning holes 63. In this embodiment, the positioning bump 23 is cylindrical, and the positioning hole 63 is circular corresponding to the positioning bump 23; four positioning convex blocks 23 are arranged on the front end cover 2, the four positioning convex blocks 23 are axially arranged around the lead screw 4, and four positioning holes 63 are correspondingly arranged on the mounting plate 6. In other embodiments, the positioning bump 23 may be prismatic, and it is also possible that the positioning hole 63 is shaped to fit the positioning bump 23; the positioning lug 23 is arranged on the mounting plate 6, and the positioning hole 63 is also feasible to be arranged on the front end cover 2; the number of the positioning projections 23 and the positioning holes 63 may be set to two, three or more, respectively.
Preferably, as shown in fig. 2 and 4, the mounting plate 6 is provided with a limiting hole 64, and the stator frame 5 is adapted to the inner circumferential surface of the limiting hole 64. Specifically, the limiting hole 64 is circular corresponding to the cylindrical body of the stator frame 5. One end of the cylinder body of the stator framework 5, which is close to the front section cover, is inserted into the limiting hole 64, so that the relative positions of the mounting plate 6 and the stator framework 5 are limited, the position accuracy of the stator framework 5 is further improved, and the vibration and noise generated in the using process of the linear stepping motor are reduced.
Preferably, as shown in fig. 2 and 5, the outer circumferential surface of the lead screw 4 is provided with a protruding limiting piece 7, the front end cover 2 is provided with a limiting groove 24 matched with the limiting piece 7, and the extending direction of the limiting groove 24 is parallel to the axial direction of the lead screw 4. Specifically, the inner side surface of the front end cover 2 is provided with a convex annular boss, and one end of the annular boss is communicated with the outer side surface of the front end cover 2 to form a through hole for the lead screw 4 to pass through. The axial direction of the annular boss and the axial direction of the lead screw 4 are arranged in a collinear way, and a limit groove 321 is arranged on the inner side surface of the annular boss. The width of the limiting groove 321 is equal to the width of the limiting piece 7. It is easy to understand that the limiting piece 7 cooperates with the limiting groove 24 on the front end cover 2 to limit the movement of the lead screw 4, so that the lead screw 4 can only slide linearly along the axial direction (i.e. the extending direction of the limiting groove 321) of the lead screw, thereby preventing the lead screw 4 from swinging or rotating due to the influence of the rotor 3, being beneficial to improving the moving precision of the lead screw 4 and improving the product quality of the linear stepping motor.
Preferably, as shown in fig. 2 and 5, the limiting member 7 is a pin shaft, and the lead screw 4 is provided with a pin hole 41 through which the limiting member 7 passes. Specifically, the number of the limiting pieces 7 is one, and the limiting pieces 7 are arranged in one-to-one correspondence with the number of the pin holes 41. The limiting piece 7 is in interference fit with the pin hole 41. The limiting piece 7 penetrates through the pin hole 41, and the lengths of the two ends of the limiting piece 7 exposed out of the lead screw 4 are equal, so that the stress on the two sides of the lead screw 4 is balanced. The circumferential direction of the stopper 7 is perpendicular to the axial direction of the lead screw 4. In other embodiments, it is also possible that the stop 7 is threadably mounted on the lead screw 4.
Preferably, as shown in fig. 2 and 6, the rotor 3 includes a support member 31 and a permanent magnet 32 sleeved in sequence from inside to outside, protruding limiting blocks 311 are respectively arranged on the outer peripheral surfaces of two ends of the support member 31, and limiting pits 321 matched with the limiting blocks 311 are arranged on the permanent magnet 32. Specifically, the support 31 and the permanent magnet 32 are both cylindrical. One side surface of the limiting block 311 is flush with the end surface of the supporting piece 31, and the limiting pit 321 is communicated with the inner peripheral surface and the end surface of the permanent magnet 32. The support 31 and the permanent magnet 32 are connected by means of insert injection molding.
Preferably, as shown in fig. 2 and 6, two ends of the supporting member 31 are respectively provided with a plurality of limiting blocks 311, and the plurality of limiting blocks 311 are uniformly distributed around the circumference of the supporting member 31. In this embodiment, two ends of the supporting member 31 are respectively provided with four sector-shaped limiting blocks 311, and the limiting pits 321 are sector-shaped corresponding to the shape of the limiting blocks 311. In other embodiments, two, three or more ends of the support 31 may be provided, respectively; it is also possible that the number of the stoppers 311 at both ends of the support 31 is different; the limiting block 311 can be in other shapes, and the limiting pit 321 is also applicable to the limiting block 311 in a shape which is matched with the limiting block 311.
In summary, according to the linear stepping motor capable of reducing vibration and noise provided by the utility model, the limiting boss is arranged on the front end cover and is matched with the inner peripheral surface of the stator framework, so that coaxiality of the stator framework, the front end cover and the rotor is limited, vibration and noise generated when the linear stepping motor moves linearly are reduced, and product quality of the linear stepping motor is improved.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (10)
1. A linear stepper motor capable of reducing vibration and noise, characterized in that: comprises a shell, a front end cover, a rotor, a lead screw and a stator framework; the shell and the front end cover are surrounded to form a containing cavity for containing the rotor and the stator framework; the stator framework is sleeved on the periphery of the rotor; the lead screw is in threaded fit with the rotor, and penetrates through the front end cover; the inner side surface of the front end cover is provided with a protruding limiting boss, and the outer peripheral surface of the limiting boss is matched with the inner peripheral surface of the stator framework.
2. A linear stepper motor capable of reducing vibration and noise as defined in claim 1, wherein: the shell is provided with a plurality of clamping claws, and the front end cover is provided with clamping grooves matched with the clamping claws.
3. A linear stepper motor capable of reducing vibration and noise as defined in claim 2, wherein: the novel clamping jaw is characterized by further comprising a mounting plate, at least one mounting hole is formed in the mounting plate, the mounting plate is arranged between the outer shell and the front end cover, and a through groove for the clamping jaw to pass through is formed in the mounting plate.
4. A linear stepper motor capable of reducing vibration and noise as defined in claim 3, wherein: and the contact surface of the front end cover and the mounting plate is respectively provided with a positioning hole and a positioning lug matched with the positioning hole.
5. A linear stepper motor capable of reducing vibration and noise as defined in claim 3, wherein: the mounting plate is provided with a limiting hole, and the stator framework is matched with the inner peripheral surface of the limiting hole.
6. A linear stepper motor capable of reducing vibration and noise as defined in claim 1, wherein: the outer peripheral surface of the lead screw is provided with a protruding limiting piece, the front end cover is provided with a limiting groove matched with the limiting piece, and the extending direction of the limiting groove is parallel to the axial direction of the lead screw.
7. A linear stepper motor capable of reducing vibration and noise as defined in claim 6, wherein: the limiting piece is in interference fit or threaded connection with the lead screw.
8. A linear stepper motor capable of reducing vibration and noise as defined in claim 6, wherein: the limiting piece is a pin shaft, and the lead screw is provided with a pin hole for the limiting piece to pass through.
9. A linear stepper motor capable of reducing vibration and noise as defined in claim 1, wherein: the rotor comprises a supporting piece and a permanent magnet which are sequentially sleeved from inside to outside, protruding limiting blocks are respectively arranged on the outer peripheral surfaces of two ends of the supporting piece, and limiting grooves matched with the limiting blocks are formed in the permanent magnet.
10. A linear stepper motor capable of reducing vibration and noise as defined in claim 9, wherein: and two ends of the supporting piece are respectively provided with a plurality of limiting blocks, and the limiting blocks are uniformly distributed around the circumference of the supporting piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322405722.2U CN220915008U (en) | 2023-09-04 | 2023-09-04 | Linear stepping motor capable of reducing vibration and noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322405722.2U CN220915008U (en) | 2023-09-04 | 2023-09-04 | Linear stepping motor capable of reducing vibration and noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220915008U true CN220915008U (en) | 2024-05-07 |
Family
ID=90910343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322405722.2U Active CN220915008U (en) | 2023-09-04 | 2023-09-04 | Linear stepping motor capable of reducing vibration and noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220915008U (en) |
-
2023
- 2023-09-04 CN CN202322405722.2U patent/CN220915008U/en active Active
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