CN202153663U - High-torque DC motor and magnetic tile bonding clamp thereof - Google Patents
High-torque DC motor and magnetic tile bonding clamp thereof Download PDFInfo
- Publication number
- CN202153663U CN202153663U CN201120261721XU CN201120261721U CN202153663U CN 202153663 U CN202153663 U CN 202153663U CN 201120261721X U CN201120261721X U CN 201120261721XU CN 201120261721 U CN201120261721 U CN 201120261721U CN 202153663 U CN202153663 U CN 202153663U
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- magnetic shoe
- motor
- fuselage
- magnetic
- high torque
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Abstract
The utility model discloses a high-torque DC motor and a magnetic tile bonding clamp thereof. The DC motor comprises a casing, magnetic tiles and a rotor, wherein the casing is composed of a cylindrical body, and an upper cover and a lower cover arranged at the two ends of the body, the magnetic tiles are respectively bonded on the inside walls of the body, and the magnetic tile at each pole is composed of at least two magnetic tile units arranged along the axial direction of the body. The magnetic tile bonding clamp comprises a pedestal, wherein the pedestal is provided with a vertical positioning sleeve, the external diameter of the positioning sleeve is matched with the internal diameter of the cylindrical body of the motor casing, the outside surface of the positioning sleeve is provided with four spacing grooves extending from an upper end face to one side of the pedestal, the spacing grooves are in equidistribution in the circumferential direction of the positioning sleeve, and the shapes of the cross sections of the spacing grooves are matched with the shapes of the cross sections of the motor magnetic tile units. The high-torque DC motor and the magnetic tile bonding clamp thereof facilitate the bonding processing of the magnetic tiles, are in favor of improving the torque of the motor, and can effectively reduce the electromagnetic noise of the motor.
Description
Technical field
The utility model relates to the motor technology field, especially relates to a kind of permanent magnet direct current motor and corresponding magnetic shoe bonding anchor clamps of slow-speed of revolution high torque (HT).
Background technology
Electric bicycle since its facility, environmental protection and advantage such as cheap on market, popularize rapidly; Thereby the DC motor that is used for electric bicycle also had higher requirement; It need have the performance of the slow-speed of revolution, high torque (HT), thereby makes vehicle have good startup acceleration performance.The permanent magnet direct current motor structure of prior art generally comprises casing, magnetic shoe, rotor, commutator etc.; For example; A kind of disclosed on the Chinese patent document " permanent magnet direct current motor ", its notification number are CN201490862U, and what magnetic shoe wherein adopted is the single piece type structure.Improve the torque of DC motor, especially detent torque just needs the longer magnetic shoe of factory length.Yet owing to receive the material behavior of manufacturing magnetic shoe and the restriction of existing magnetic shoe process equipment and technology; Make large-sized magnetic shoe be difficult to processing and manufacturing, not only the accuracy of manufacture is lower, and rate of finished products is low; Manufacturing cost is high, and then has limited the torque of DC motor.In addition, motor in the running, the air gap between stator and the rotor has an air-gap field; And wall thickness design such as the common employing of existing magnetic shoe; That is to say that its outer arc face and inner arc face are the same centers of circle, thereby make the air gap basically identical between rotor and the magnetic shoe; Thereby can produce approximate trapezoid ripple magnetic field, and then cause between the motor each several part to interact and deform and vibrate and produce bigger noise of motor.
Summary of the invention
The utility model purpose be to overcome the existing torque of permanent magnet direct current motor of prior art less than normal, be difficult to satisfy the problem to the needs of high torque (HT) such as electric bicycle, a kind of easily manufactured, DC motor with high torque (HT) is provided.
Another purpose of the utility model is to overcome the big problem of the existing noise of permanent magnet direct current motor of prior art, provides a kind of electromagnetic noise low DC motor.
The further purpose of the utility model is to overcome the unmanageable problem of existing in prior technology large scale magnetic shoe, and a kind of anchor clamps that are used for the bonding of magnetic shoe and casing are provided, thereby makes the large scale magnetic shoe can pass through splicing construction manufacturing and installation.
To achieve these goals; The utility model adopts following technical scheme: a kind of DC motor of high torque (HT); Comprise casing, magnetic shoe, rotor; Said casing is made up of with loam cake, the lower cover of being located at the fuselage two ends the fuselage of tubular, and said magnetic shoe five equilibrium is bonded on the madial wall of fuselage, and the magnetic shoe of each utmost point is made up of at least two magnetic shoe unit of arranging along the axis direction of fuselage.Processing and manufacturing for the ease of the large scale magnetic shoe; What the magnetic shoe of the utility model adopted is splicing construction; Whole magnetic shoe is connected in series vertically by several magnetic shoes unit and constitutes, thereby can shorten the length of each magnetic shoe unit widely, so that its processing and manufacturing; The magnetic shoe that is spliced to form by several magnetic shoes unit significantly increases magnetic flux, and then makes electronic function satisfy the needs of high torque (HT).Casing is made up of then the fuselage of tubular and the loam cake of being located at the fuselage two ends, lower cover splicing and can be conveniently the magnetic shoe of splicing construction be bonded on the fuselage.
As preferably, said magnetic shoe is the tile of symmetry, and the radius of its inside and outside arc surface equates that the inner arc surface dual side-edge edge place of said magnetic shoe is provided with fillet.Thereby make the thickness at magnetic shoe middle part thicker; The thickness of both sides is attenuate gradually then; Combine the fillet design at dual side-edge edge place again, thereby the magnetic flux of magnetic shoe both sides weakens gradually, reduced harmonic field effectively; Motor field is distributed more approach sine wave, and then reduced electromagnetic noise effectively.
As preferably, the minimal air gap between said rotor and the magnetic shoe is 0.3 millimeter to 0.6 millimeter, thereby helps improving power of motor and efficient.
A kind of magnetic shoe bonding anchor clamps of high torque (HT) DC motor; Comprise base; Said base is provided with vertical abutment sleeve, and the fuselage internal diameter of the external diameter of abutment sleeve and motor casing tubular is suitable, and the abutment sleeve lateral surface is provided with four stopper slots that extend to base one side from the upper end surface; Said stopper slot five equilibrium on the circumferencial direction of abutment sleeve is arranged, and the shape of cross section of the shape of cross section of stopper slot and motor magnetic shoe unit is suitable.In order to improve the torque of motor, and make things convenient for the processing of magnetic shoe, magnetic shoe adopts splicing construction; Be spliced to form by the magnetic shoe unit, owing to can each other repel between the homopolarity magnetic shoe, thereby the difficulty when causing its bonding; The anchor clamps of the utility model directly are enclosed within the fuselage of motor casing tubular on the abutment sleeve, and the magnetic shoe unit then can insert in the stopper slot and bond, because the magnetic shoe unit is located in stopper slot well; Thereby be very easy to the bonding of magnetic shoe unit; And can make the magnetic shoe that is spliced keep high shape and size precision, thus can realize the manufacturing of large scale magnetic shoe, to improve the torque of motor.
As preferably, also comprise the cylindrical gland that an external diameter and fuselage internal diameter are suitable, the length of said stopper slot is littler 15 millimeters to 25 millimeters than the length of magnetic shoe, thereby is convenient to the magnetic shoe unit is pressed in the stopper slot reliably.
As preferably, the open end edge that is positioned at the abutment sleeve upper surface at stopper slot is provided with chamfering, and the magnetic shoe unit is had guiding function, makes things convenient for the magnetic shoe unit to be inserted in the stopper slot.
Therefore, the utlity model has following beneficial effect: be convenient to the bonding processing of magnetic shoe, the torque that helps improving motor can effectively reduce the electromagnetic noise of motor.
Description of drawings
Fig. 1 is a kind of structural representation of the DC motor of the utility model high torque (HT).
Fig. 2 is a kind of structural representation of the utility model magnetic shoe.
Fig. 3 is a kind of structural representation of the magnetic shoe bonding anchor clamps of the utility model high torque (HT) DC motor.
Fig. 4 is the another kind of structural representation of the magnetic shoe bonding anchor clamps of the utility model high torque (HT) DC motor.
Fig. 5 is the structural representation of the magnetic shoe bonding anchor clamps user mode of the utility model high torque (HT) DC motor.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further description.
As Fig. 1, shown in embodiment in, a kind of DC motor of high torque (HT) comprises casing 1, magnetic shoe 2 and rotor 3.The bonding of magnetic shoe for ease, casing is made up of columnar fuselage 12 and loam cake 11, the lower cover 12 of being located at the fuselage two ends, the material employing rare earth Ru-Fe-Mn of magnetic shoe.As shown in Figure 2, the magnetic shoe 2 of each utmost point is spliced to form by the axis direction of two onesize magnetic shoe unit 21 along fuselage, and magnetic shoe is the tile of symmetry; The radius of its inside and outside arc surface equates; And fillet is set at the inner arc surface dual side-edge edge place of magnetic shoe, therefore, the radial thickness of magnetic shoe is thick middle, the thin not uniform thickness state in both sides; The exterior arc surface radius of magnetic shoe is identical with the internal diameter of fuselage, and the magnetic shoe five equilibrium is bonded on the madial wall of cylindrical shape fuselage.Further, the minimal air gap between rotor and the magnetic shoe centre position is 0.3 millimeter.
Magnetic shoe adopts splicing construction, and the magnetic flux of magnetic shoe is significantly increased, and then makes electronic function realize high torque (HT) output.In addition, because the thickness at magnetic shoe middle part is thicker, the thickness of both sides is attenuate gradually then, thereby the magnetic flux of magnetic shoe both sides weakens gradually, has reduced harmonic field effectively, motor field is distributed more approach sine wave, and then reduced electromagnetic noise effectively.Further because magnetic shoe thicker, both sides are thin, thereby the air gap between all the other patents also be in the middle of the big characteristics in little both sides, thereby help dwindling minimal air gap, help improving power of motor and efficient.
As shown in Figure 3; A kind of magnetic shoe bonding anchor clamps of high torque (HT) DC motor, its bonding that is applicable to the splicing construction magnetic shoe is fixed, and comprises the base 5 of a circle; The external diameter of base is consistent with fuselage 12 external diameters of motor casing tubular; Concentric abutment sleeve 6 vertically is set on the base, and the fuselage internal diameter of the external diameter of abutment sleeve and motor casing tubular is suitable, thereby fuselage can be enclosed within on the abutment sleeve.In addition; The abutment sleeve lateral surface is provided with four stopper slots 7; Stopper slot five equilibrium on the circumferencial direction of abutment sleeve is arranged, and stopper slot is open-minded in the abutment sleeve upper end surface, and extends to base one side along the abutment sleeve lateral surface; The open end edge that is positioned at the abutment sleeve upper surface at stopper slot is provided with chamfering; The length of stopper slot is littler 20 millimeters than the length of whole magnetic shoe, and the shape of cross section of the shape of cross section of stopper slot and motor magnetic shoe unit is suitable, thereby magnetic shoe can be inserted in the stopper slot.Certainly, the insertion of magnetic shoe unit for ease, the radius of corner at fillet place, both sides of the edge, corresponding magnetic shoe unit can be less than the radius of corner at place, both sides of the edge, magnetic shoe unit on the stopper slot.In addition, the bonding of the processing and manufacturing of stopper slot and magnetic shoe is as shown in Figure 4 for ease, and we also can be upwards open-minded fully in the footpath of abutment sleeve with stopper slot, thereby make it be nick shaped.Further, the magnetic shoe of the utility model bonding anchor clamps also comprise an external diameter and the suitable cylindrical gland 8 of fuselage internal diameter, and at the edge of gland chamfering are set, and are pressed in the fuselage helping.
As shown in Figure 5; When adhesive magnetic tile, at first the fuselage with motor is enclosed within on the abutment sleeve, and the magnetic shoe unit that can will scribble glue then inserts in the stopper slot of abutment sleeve; At last gland is inserted in the fuselage magnetic shoe unit is compressed; Because the length of stopper slot is littler 20 millimeters than the length of whole magnetic shoe, therefore, can guarantee that gland can compress the magnetic shoe unit.Especially, itself can produce bigger repulsive force between two magnetic shoe unit of homopolarity, thereby is difficult to locate exactly, and stopper slot then can carry out accurately the magnetic shoe unit, locate reliably, thereby avoids inconsistent phenomenon occurring between two magnetic shoe unit.
Need to prove, on the base center through hole can be set, so that the cleaning of anchor clamps, and, also corresponding clamp system can be set on the base, thereby conveniently gland be compressed reliably.
Claims (7)
1. the DC motor of a high torque (HT); Comprise casing (1), magnetic shoe (2), rotor (3); It is characterized in that; Said casing is made up of the fuselage (12) of tubular and loam cake (11), the lower cover (13) of being located at the fuselage two ends, and said magnetic shoe five equilibrium is bonded on the madial wall of fuselage, and the magnetic shoe of each utmost point is made up of at least two magnetic shoe unit of arranging along the axis direction of fuselage (21).
2. the DC motor of a kind of high torque (HT) according to claim 1 is characterized in that, said magnetic shoe is the tile of symmetry, and the radius of its inside and outside arc surface equates.
3. the DC motor of a kind of high torque (HT) according to claim 2 is characterized in that, the inner arc surface dual side-edge edge place of said magnetic shoe is provided with fillet.
4. according to the DC motor of claim 1 or 2 or 3 described a kind of high torque (HT)s, it is characterized in that the minimal air gap between said rotor and the magnetic shoe is 0.3 millimeter to 0.6 millimeter.
5. the magnetic shoe of high torque (HT) DC motor bonding anchor clamps; Comprise base (5), it is characterized in that said base is provided with vertical abutment sleeve (6); The fuselage internal diameter of the external diameter of abutment sleeve and motor casing tubular is suitable; The abutment sleeve lateral surface is provided with four stopper slots (7) that extend to base one side from the upper end surface, and said stopper slot five equilibrium on the circumferencial direction of abutment sleeve is arranged, and the shape of cross section of the shape of cross section of stopper slot and motor magnetic shoe unit is suitable.
6. the magnetic shoe bonding anchor clamps of high torque (HT) DC motor according to claim 5 is characterized in that also comprise the cylindrical gland (8) that an external diameter and fuselage internal diameter are suitable, the length of said stopper slot is littler 15 millimeters to 25 millimeters than the length of magnetic shoe.
7. the magnetic shoe bonding anchor clamps of high torque (HT) DC motor according to claim 5 is characterized in that the open end edge that is positioned at the abutment sleeve upper surface at stopper slot is provided with chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120261721XU CN202153663U (en) | 2011-07-22 | 2011-07-22 | High-torque DC motor and magnetic tile bonding clamp thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120261721XU CN202153663U (en) | 2011-07-22 | 2011-07-22 | High-torque DC motor and magnetic tile bonding clamp thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202153663U true CN202153663U (en) | 2012-02-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120261721XU Expired - Fee Related CN202153663U (en) | 2011-07-22 | 2011-07-22 | High-torque DC motor and magnetic tile bonding clamp thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202153663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108631523A (en) * | 2018-07-27 | 2018-10-09 | 宣城坚腾智能传动设备有限公司 | A kind of outer rotor brushless motor bonding magnetic steel tooling |
-
2011
- 2011-07-22 CN CN201120261721XU patent/CN202153663U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108631523A (en) * | 2018-07-27 | 2018-10-09 | 宣城坚腾智能传动设备有限公司 | A kind of outer rotor brushless motor bonding magnetic steel tooling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20150722 |
|
| EXPY | Termination of patent right or utility model |