CN216851478U - Small-air-gap magnetism isolating motor for EHA - Google Patents
Small-air-gap magnetism isolating motor for EHA Download PDFInfo
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- CN216851478U CN216851478U CN202220377332.1U CN202220377332U CN216851478U CN 216851478 U CN216851478 U CN 216851478U CN 202220377332 U CN202220377332 U CN 202220377332U CN 216851478 U CN216851478 U CN 216851478U
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Abstract
The utility model relates to a little air gap separates magnetic motor for EHA, including rotor and stator, be equipped with a plurality of magnet mounting grooves on the rotor, be equipped with arc magnet in the magnet mounting groove, arc magnet passes through the magnet holder to be fixed in the magnet mounting groove, be equipped with magnetism proof sleeve on the stator. The utility model has the advantages that: the arc-shaped magnet is adopted, so that the air gap between the magnetic steel and the stator is reduced, the torque output of electrons is larger and the efficiency is higher under the same condition; the magnetic force is fixed by the magnet storage rack, so that the injection molding link is omitted, the strength is higher, the stability is better, and the high-vibration and high-temperature environment can be better adapted; the stator is provided with the magnetism isolating sleeve, and the magnetic field forms a loop inside the magnetism isolating sleeve by utilizing the high magnetic conductivity of iron, so that the magnetic field is isolated, and the risks of iron scrap adsorption, controller interference and the like are greatly reduced.
Description
Technical Field
The utility model relates to an electrical equipment field especially relates to a EHA separates magnetor with little air gap.
Background
The electronic hydraulic actuator is a clutch operating mechanism in an automatic gearbox, and the principle of the electronic hydraulic actuator is that two actuating motors are controlled to drive a lead screw and a piston to move, power is transmitted to the clutch actuating mechanism through oil, and the two clutches are connected with and separated from a power input shaft under different matching working conditions.
The actuating motor is used as the power of the whole actuator, is positioned at the accessory of the actuator controller component, and drives the roller screw to rotate through the actuating motor so as to drive the whole piston to move. The existing actuating motor has the following defects:
1. traditional rotor magnet steel comprises cuboid magnet, and magnet pastes on rotor core, through moulding plastics the parcel and fill the clearance, and the technology step is many, and it requires high to mould plastics, leads to the product size ultra-poor easily because the problem of moulding plastics, in addition, under the influence of the sharp acceleration and deceleration in engine vibration, high low temperature impact and self working process, leads to magnet to drop easily to lead to becoming invalid.
2. Because the rotor structure who adopts strong magnetism, at the stage of producing the line installation, the stator adsorbs iron fillings very easily, and in the course of the work, the magnetism of rotor and the magnetic field of deciding rotor induction production not only adsorb iron fillings easily, produce the influence to communications such as controller original paper and displacement sensor signal.
Disclosure of Invention
The utility model mainly solves the problem, provides a magnet is difficult for droing, can reduce rotor and stator air gap, promotes motor torque output and can avoid adsorbing the little air gap magnetism-insulated motor for EHA of risks such as iron fillings, interference control ware.
The utility model provides a technical scheme that its technical problem adopted is, a little air gap separates magnetic motor for EHA, including rotor and stator, be equipped with a plurality of magnet mounting grooves on the rotor, be equipped with arc magnet in the magnet mounting groove, arc magnet passes through the magnet holder to be fixed in the magnet mounting groove, be equipped with magnetism isolating sleeve on the stator.
The arc-shaped magnet is adopted, so that the air gap between the magnetic steel and the stator is reduced, the torque output of electrons is larger and the efficiency is higher under the same condition; the magnetic force is fixed by the magnet storage rack, so that the injection molding link is omitted, the strength is higher, the stability is better, and the high-vibration and high-temperature environment can be better adapted; the stator is provided with the magnetism isolating sleeve, and the magnetic field forms a loop inside the magnetism isolating sleeve by utilizing the high magnetic conductivity of iron, so that the magnetic field is isolated, and the risks of iron scrap adsorption, controller interference and the like are greatly reduced.
As a preferred scheme of the scheme, the magnet holder is annular, a plurality of limiting concave recesses are formed in the magnet holder at equal intervals, and the arc-shaped magnet is arranged in a containing cavity formed by two adjacent limiting concave recesses. And the magnet is conveniently fixed by matching with the magnet mounting groove on the rotor.
As a preferable scheme of the above scheme, the magnetic shield includes a bottom plate and an annular side plate, and the stator is disposed in a cavity formed by the bottom plate and the annular side plate.
As a preferred scheme of the scheme, a plurality of bosses are arranged on the inner wall of the annular side plate, and the bosses are in interference fit with the stator. The interference fit is adopted, the assembly is simple, the reliability is good, and the processing technology is simple.
As a preferable scheme of the scheme, the middle part of the bottom plate is provided with a through hole for placing a screw rod of the ball screw.
As a preferable scheme of the above scheme, the bottom plate is provided with terminal through holes, and the terminal through holes are distributed on the bottom plate at equal intervals in an annular shape.
The utility model has the advantages that: the arc-shaped magnet is adopted, so that the air gap between the magnetic steel and the stator is reduced, the torque output of electrons is larger and the efficiency is higher under the same condition; the magnetic force is fixed by the magnet storage rack, so that the injection molding link is omitted, the strength is higher, the stability is better, and the high-vibration and high-temperature environment can be better adapted; the stator is provided with the magnetism isolating sleeve, and the magnetic field forms a loop inside the magnetism isolating sleeve by utilizing the high magnetic conductivity of iron, so that the magnetic field is isolated, and the risks of iron scrap adsorption, controller interference and the like are greatly reduced.
Drawings
FIG. 1 is a schematic perspective view of a small air gap magnetor for EHA in the example.
Fig. 2 is a schematic perspective view of a rotor in the embodiment.
Fig. 3 is a schematic perspective view of the magnetic shield in the embodiment.
1-stator 2-rotor 3-magnetic isolation sleeve 4-boss 5-arc magnet 6-magnet holder 7-spacing indent 8-annular side plate 9-bottom plate 10-through hole 11-wiring terminal through hole.
Detailed Description
The technical solution of the present invention is further described below by way of examples and with reference to the accompanying drawings.
Example (b):
the small air gap magnetic isolation motor for the EHA comprises a rotor 2 and a stator 1, wherein a plurality of magnet installation grooves are formed in the rotor 2, and a magnetic isolation sleeve 3 is arranged on the stator 1, as shown in figures 1 to 3. An arc magnet 5 is arranged in the magnet mounting groove, and the arc magnet 5 is fixed in the magnet mounting groove through a magnet holder 6.
The magnetic shield 3 is formed by stamping cold-rolled sheet steel and comprises a bottom plate 9 and an annular side plate 8, and the stator 1 is arranged in a cavity formed by the bottom plate 9 and the annular side plate 8. A plurality of bosses 4 are arranged on the inner wall of the annular side plate 8, and the bosses 4 are in interference fit with the stator 1.
The middle part of the bottom plate 9 is provided with a through hole 10 for placing a lead screw of the ball screw and a terminal through hole 11, the through hole 10 is positioned in the center, and the terminal through holes 11 are distributed on the bottom plate in an annular shape at equal intervals.
In the embodiment, the original cuboid-shaped magnet is designed into an arc shape on the rotor, so that an air gap between the rotor and the stator is reduced, the torque output of the motor is larger under the same condition, the efficiency is higher, the metal retainer is used for fixing the magnet to replace injection molding for fixation, the process flow is reduced, the assembly is more convenient, the strength and the stability of magnet fixation are improved, and the magnet fixing device is more suitable for working in environments with high vibration, high temperature and the like; on the stator, utilize the magnetism proof cover parcel motor stator, utilize the high magnetic conductivity of iron, make magnetic field form the return circuit in magnetism proof cover inside to isolated magnetic field, very big reduction adsorb iron fillings, interference control ware scheduling risk, in addition, magnetism proof cover adopts the parcel formula design, and occupation space is little, adopts interference fit pressure equipment together with the stator, and the assembly is simple, good reliability, and processing technology is simple.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (6)
1. The small air gap magnetic isolation motor for the EHA comprises a rotor and a stator, and is characterized in that: the rotor is provided with a plurality of magnet mounting grooves, arc-shaped magnets are arranged in the magnet mounting grooves and fixed in the magnet mounting grooves through magnet retainers, and the stator is provided with magnetic isolation sleeves.
2. A small air gap magnetor for an EHA as defined in claim 1, wherein: the magnet holder is annular, and the magnet is preserved the equal interval and is equipped with a plurality of spacing indents on the frame, arc magnet is located two adjacent spacing indent formation and is held the chamber in.
3. A small air gap magnetor for an EHA as defined in claim 2, wherein: the magnetic isolation sleeve comprises a bottom plate and an annular side plate, and the stator is arranged in a cavity formed by the bottom plate and the annular side plate.
4. A small air gap magnetor for an EHA as defined in claim 3, wherein: the inner wall of the annular side plate is provided with a plurality of bosses, and the bosses are in interference fit with the stator.
5. A small air gap magnetor for an EHA as defined in claim 3, wherein: and the middle part of the bottom plate is provided with a through hole for placing a lead screw of the ball screw.
6. An EHA small air gap magneto-isolation motor as claimed in claim 5, wherein: the bottom plate is provided with terminal through holes which are distributed on the bottom plate at equal intervals in an annular mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220377332.1U CN216851478U (en) | 2022-02-24 | 2022-02-24 | Small-air-gap magnetism isolating motor for EHA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220377332.1U CN216851478U (en) | 2022-02-24 | 2022-02-24 | Small-air-gap magnetism isolating motor for EHA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216851478U true CN216851478U (en) | 2022-06-28 |
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ID=82089694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220377332.1U Active CN216851478U (en) | 2022-02-24 | 2022-02-24 | Small-air-gap magnetism isolating motor for EHA |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216851478U (en) |
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2022
- 2022-02-24 CN CN202220377332.1U patent/CN216851478U/en active Active
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