CN209200786U - A kind of brushless rotor of micro-step motor - Google Patents

Abstract

The utility model discloses a kind of brushless rotors of micro-step motor, including rotor body, first ball bearing, second ball bearing, radiator fan and rotor rear end cap, the middle position of the rotor body offers axis hole, rotation axis is plugged on the axis hole, the surface interval of the rotation axis is evenly arranged with fixture block, the rotor body shaft hole inner wall offers the card slot to match with fixture block, the fixture block and card slot are clamped, the two sides of the rotor body are respectively arranged with the first ball bearing and the second ball bearing, first ball bearing and the second ball bearing are rotatablely connected with the both ends of rotation axis respectively, second ball bearing is embedded in the middle position of rotor rear end cap, peak and tooth socket with teeth is arranged in the outer of the rotor body, it is equipped in rotation axis between the rotor body and the second ball bearing scattered Hot-air fan.Utility model works are more efficient, good heat dissipation effect, and operation stability is high.

Description

A kind of brushless rotor of micro-step motor

Technical field

The utility model relates to stepper motor technical field, the brushless rotor of specially a kind of micro-step motor.

Background technique

Stepper motor is the opened loop control motor that electric impulse signal is changed into angular displacement or displacement of the lines, is modern digital journey Main executive component in sequence control system, application is extremely wide, under normal circumstances, the revolving speed of motor, stopping position only Depending on the frequency and umber of pulse of pulse signal, without being influenced by load variation, when step actuator receives a pulse Signal, it just drives stepper motor to rotate a fixed angle by the direction of setting, this angle is known as step angle, passes through control The quantity of pulse processed controls angular displacement, to achieve the purpose that accurate positionin；Electricity is controlled by controlling the frequency of pulse The revolving speed and acceleration of machine, the rotor structure of stepper motor are the important composition structures of stepper motor.

But existing stepping motor rotor has the disadvantage that

1, existing stepping motor rotor is all made of completely solid construction, and rotor body heavier-weight needs biggish electricity Driving motor rotation is flowed, so that power consumption is excessive, electric power spending is larger, not energy-efficient.

2, existing stepper motor heat dissipation effect is poor, when working rotor, can generate certain heat, heat saves bit by bit certain journey Degree can impact stepper motor other component, and then can reduce the service life of stepper motor.

Utility model content

(1) the technical issues of solving

In view of the deficiencies of the prior art, the utility model provides a kind of brushless rotor of micro-step motor, solves Existing technical work low efficiency, heat dissipation effect is poor, the short problem of service life.

(2) technical solution

To achieve the above object, the utility model provides the following technical solutions: a kind of micro-step motor fixed is turned with brushless Son, including rotor body, the first ball bearing, the second ball bearing, radiator fan and rotor rear end cap, the rotor body Middle position offers axis hole, and rotation axis is plugged on the axis hole, and the surface interval of the rotation axis is evenly arranged with fixture block, The rotor body shaft hole inner wall offers the card slot to match with fixture block, and the fixture block and card slot are clamped, the rotor body Two sides be respectively arranged with the first ball bearing and the second ball bearing, first ball bearing and the second ball bearing difference It is rotatablely connected with the both ends of rotation axis, second ball bearing is embedded in the middle position of rotor rear end cap, the rotor sheet Peak and tooth socket with teeth is arranged in the outer of body, is equipped with radiation air in the rotation axis between the rotor body and the second ball bearing Fan, the centre of the rotor body offers multiple ventilation through slots.

Preferably, the fixture block is designed in inverted trapezoidal, and the fixture block is along two circle of rotation axis surface distribution.

Preferably, interval is uniformly provided with multiple heat release holes on the rotor rear end cap.

Preferably, dirt filtrating screen is provided on the heat release hole.

Preferably, multiple ventilation through slot intervals are uniformly in the outside that rotation axis is distributed in around state.

Preferably, the ventilation through slot is arc groove.

Preferably, the tooth peak and the interlaced arrangement of tooth socket.

(3) beneficial effect

The utility model provides a kind of brushless rotor of micro-step motor, have it is following the utility model has the advantages that

(1) the utility model on rotor body by being arranged multiple ventilation through slots, and multiple ventilation through slot intervals are equal The even outside that rotation axis is distributed in the state of surrounding, the design for through slot of ventilating can reduce the weight of rotor body, and stepper motor is fixed After magnetizing coil in son is powered, the magnetic pole for the magnetic field suction rotor body that stator generates makes magnetic field and the stator of rotor body Field synchronous rotation only needs to generate smaller than existing magnetic field due to the lighter in weight of rotor body compared with existing rotor Magnetic field the rotation of rotor body can be realized, thus electric current needed for reaching identical rotating effect is just small, therefore this is practical Novel more power saving, working efficiency are higher.

(2) the utility model is by setting fixture block, card slot and radiator fan, in use, fixture block and rotor in rotation axis Card slot clamping in axis hole among ontology, can effectively send out the frictional force increased between rotation axis and rotor body, avoid the occurrence of Rotation axis idle running phenomenon, while the radiator fan of installation on the rotating shaft will while rotor body drives rotation axis rotation It rotates synchronously, constantly the heat generated inside stepper motor can be shed by heat release hole, realize rapid cooling, ventilation through slot can Promote the circulation of rotor body two sides hot gas, keeps heat dissipation effect more preferable, guarantee the normal operation of motor, the utility model heat dissipation effect Good, operation stability is high.

Detailed description of the invention

Fig. 1 is the main view of the utility model；

Fig. 2 is the side view of the utility model；

Fig. 3 is the installation diagram of the utility model rotor body.

In figure: 1, rotor body；2, the first ball bearing；3, the second ball bearing；4, rotation axis；5, tooth peak；6, tooth socket； 7, ventilation through slot；8, radiator fan；9, fixture block；10, card slot；11, axis hole；12, rotor rear end cap；13, heat release hole；14, dust filtering Net.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in Figure 1-3, the utility model provides a kind of technical solution: a kind of brushless rotor of micro-step motor, Including rotor body 1, the first ball bearing 2, the second ball bearing 3, radiator fan 8 and rotor rear end cap 12, rotor body 1 Middle position offers axis hole 11, and rotation axis 4 is plugged on axis hole 11, and the surface interval of rotation axis 4 is evenly arranged with fixture block 9, The inner wall of the axis hole 11 of rotor body 1 offers the card slot 10 to match with fixture block 9, and fixture block 9 and card slot 10 are clamped, rotor body 1 two sides are respectively arranged with the first ball bearing 2 and the second ball bearing 3, and the first ball bearing 2 and the second ball bearing 3 divide It is not rotatablely connected with the both ends of rotation axis 4, the second ball bearing 3 is embedded in the middle position of rotor rear end cap 12, rotor body 1 Outer peak 5 with teeth and tooth socket 6 are set, radiation air is installed in the rotation axis 4 between rotor body 1 and the second ball bearing 3 Fan 8, the centre of rotor body 1 offer multiple ventilation through slots 7, and fixture block 9 is designed in inverted trapezoidal, and fixture block 9 is along 4 surface of rotation axis point Cloth two encloses, and interval is uniformly provided with multiple heat release holes 13 on rotor rear end cap 12, and dirt filtrating screen 14 is provided on heat release hole 13, multiple Ventilation through slot 7 is spaced uniformly in the outside for being distributed in rotation axis 4 around state, and ventilation through slot 7 is arc groove, tooth peak 5 and tooth socket 6 Interlaced arrangement.

In use, the card slot 10 in the axis hole 11 of 1 centre of fixture block 9 and rotor body in rotation axis 4 is clamped, can effectively send out Increase the frictional force between rotation axis 4 and rotor body 1, avoids the occurrence of the idle running phenomenon of rotation axis 4, while in 1 band of rotor body The radiator fan 8 that is mounted in rotation axis 4 will rotate synchronously while turn moving axis 4 rotates, can constantly will be in stepper motor The heat that portion generates is shed by heat release hole 13, realizes rapid cooling, and the design of ventilation through slot 7 can reduce the weight of rotor body 1 It measures, after the magnetizing coil in step motor stator is powered, the magnetic pole for the magnetic field suction rotor body 1 that stator generates makes rotor sheet The magnetic field of body 1 and stator field synchronous rotary only need to produce due to the weight saving of rotor body 1 compared with existing rotor The rotation of rotor body 1 can be realized in raw magnetic field more smaller than existing magnetic field, thus electricity needed for reaching identical rotating effect Stream is just small.

It can to sum up obtain, the utility model solves existing by setting ventilation through slot 7, radiator fan 8, fixture block 9 and card slot 10 Some technical work low efficiencys, heat dissipation effect is poor, the short problem of service life.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (7)

1. a kind of brushless rotor of micro-step motor, including rotor body (1), the first ball bearing (2), the second ball axis Hold (3), radiator fan (8) and rotor rear end cap (12), it is characterised in that: the middle position of the rotor body (1) offers Axis hole (11) is plugged with rotation axis (4) on the axis hole (11), and the surface interval of the rotation axis (4) is evenly arranged with fixture block (9), the inner wall of the axis hole (11) of the rotor body (1) offers the card slot (10) to match with fixture block (9), the fixture block (9) it is clamped with card slot (10), the two sides of the rotor body (1) are respectively arranged with the first ball bearing (2) and the second ball axis It holds (3), first ball bearing (2) and the second ball bearing (3) are rotatablely connected with the both ends of rotation axis (4) respectively, described Second ball bearing (3) is embedded in the middle position of rotor rear end cap (12), and peak with teeth is arranged in the outer of the rotor body (1) (5) and tooth socket (6) radiator fan, is installed in the rotation axis (4) between the rotor body (1) and the second ball bearing (3) (8), the centre of the rotor body (1) offers multiple ventilation through slots (7).

2. a kind of brushless rotor of micro-step motor according to claim 1, it is characterised in that: the fixture block (9) It is designed in inverted trapezoidal, the fixture block (9) is along two circle of rotation axis (4) surface distribution.

3. a kind of brushless rotor of micro-step motor according to claim 1, it is characterised in that: the rotor rear end Interval is uniformly provided with multiple heat release holes (13) on lid (12).

4. a kind of brushless rotor of micro-step motor according to claim 3, it is characterised in that: the heat release hole (13) dirt filtrating screen (14) are provided on.

5. a kind of brushless rotor of micro-step motor according to claim 1, it is characterised in that: multiple ventilations Through slot (7) interval is uniformly in the outside for being distributed in rotation axis (4) around state.

6. a kind of brushless rotor of micro-step motor according to claim 1, it is characterised in that: the ventilation through slot It (7) is arc groove.

7. a kind of brushless rotor of micro-step motor according to claim 1, it is characterised in that:

The tooth peak (5) and tooth socket (6) interlaced arrangement.