CN203984150U - There is brushless motor - Google Patents
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- CN203984150U CN203984150U CN201420303883.9U CN201420303883U CN203984150U CN 203984150 U CN203984150 U CN 203984150U CN 201420303883 U CN201420303883 U CN 201420303883U CN 203984150 U CN203984150 U CN 203984150U
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- 230000002093 peripheral effect Effects 0.000 claims description 23
- 239000011295 pitch Substances 0.000 claims description 10
- 230000000994 depressogenic effect Effects 0.000 claims description 5
- 239000013256 coordination polymer Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
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Abstract
The utility model provides the brushless motor that has that worm shaft can free-extension.There is brushless motor to drive worm shaft (31) and (32), and possess stator (20) and be arranged at the rotor (10) of the inner circumferential side of stator (20).Rotor (10) comprising: the utilization that has the cylindrical case (11) of hollow and be formed at the internal face of cylindrical case 11 in the part that becomes rotating shaft R screws togather effect and worm shaft (31) and (32) chimeric internal thread part (12a), (12b), (12c) and (12d).
Description
Technical field
The utility model includes brushless motor, says more definitely, relates to the brushless motor that has that drives worm shaft.
Background technology
Device as the linear movement output that rotatablely moves that utilizes motor is known to Linear actuator.Linear actuator in the past comprises motor, be installed on the worm gear of the output shaft of motor (helical gear) and the worm shaft that engages with worm shaft etc.In Linear actuator, to rotate together with the rotation of worm gear and motor, directly or be indirectly passed to worm shaft via gear, worm shaft is rotated and rectilinear motion in the rotation of worm gear.Its result, the parts that are installed on worm shaft carry out rectilinear motion.
In Linear actuator in the past, there is the problem of sending the grating of gears being caused by gear engagement each other from the gear unit being formed by worm gear and worm shaft etc.In addition, because the rotation of motor is passed to worm shaft via gear unit, so exist, rotatablely moving of motor is converted to the poor problem of straight-line efficiency.
Therefore, for example in following patent documentation 1 and 2 etc., propose to have not just can linear movement output via gear unit motor.In following patent documentation 1, disclose the axle as the rotating part of motor is made to quill shaft, and the motor of helical screw thread is set in the inside of quill shaft.By motor, to right rotation or to anticlockwise, the central shaft and the motor that insert central shaft relatively move.
In following patent documentation 2, disclose and possess first and second ball screw framework of accommodating and the power driver that drives the first and second electric motor of each ball screw framework in stationary housing.The first electric motor possesses first stator in the interior week that remains on stationary housing and is configured in the first rotor of the periphery of the first ball nut that forms the first ball screw framework.The second electric motor possesses second stator in the interior week that remains on stationary housing and is configured in the second rotor of the periphery of the second ball nut that forms the second ball screw framework.The rotor of the rotor of the first electric motor and the second electric motor is controlled by control part respectively.
Patent documentation 1: Japanese Patent Publication 7-3265 communique
Patent documentation 2: TOHKEMY 2011-205737 communique
Because the motor of patent documentation 1 has an axle, so move by the axial direction of pivot of motor.By this motor application in the case of flexible position, need to configure two motors.In addition, the motor of patent documentation 1 does not have the structure such as commutator, brush, so infer that is brushless electric machine.In addition in the power driver of patent documentation 2, because the rotor of the first electric motor and the rotor of the second electric motor are electrically connected with control part respectively, so infer and the first electric motor and the second electric motor is brushless electric machine.
In the situation that being brushless electric machine, generally configure stator core at the inner peripheral surface of shell, at rotor-side distributed magnet.Stator core is the shape in circular inner circumferential side with salient pole.In this case, the axial length of motor longer (more becoming rectangular), is more difficult to be wound around winding coil between the gap of adjacent salient pole.Under these circumstances, also have and cut apart each salient pole of stator core and reel after coil on the salient pole being partitioned into, again salient pole is assembled into the manufacture method of ring-type, but have the problem that spends very much the number of working processes.
Summary of the invention
The utility model proposes in order to solve above-mentioned problem, and its object is to provide the brushless motor that has that worm shaft can free-extension.
The brushless motor that has of an aspect of the present utility model is the brushless motor that has that drives worm shaft, possess stator and be arranged at the rotor of the inner circumferential side of stator, rotor comprises: the inner peripheral surface and the utilization that have the cylindrical portion of hollow and be arranged on cylindrical portion in the part that becomes rotating shaft screw togather the effect internal thread part chimeric with worm shaft.
Above-mentioned have brushless motor in preferably, there is brushless motor to drive the first worm shaft and the second worm shaft, rotor is included in along the first rotor and second rotor of alignment arrangements in the direction of rotating shaft, the internal thread part of the first rotor and the first worm shaft are chimeric, and bitrochanteric internal thread part and the second worm shaft are chimeric.
Above-mentioned have brushless motor in preferably, the internal thread part of the first rotor have first towards ridge, bitrochanteric internal thread part have with first towards the opposite towards that is second towards ridge.
Above-mentioned have brushless motor in preferably, the internal thread part of the first rotor has the ridge of first segment distance, bitrochanteric internal thread part has from first segment apart from different pitches that is the ridge of second section distance.
Above-mentioned have brushless motor in preferably, the cylindrical portion of the first rotor and bitrochanteric barrel from, the first rotor is accepted electric power by the first commutator and is supplied with, the second rotor is accepted electric power supply by the second commutator different from the first commutator.
Above-mentioned have brushless motor in preferably, internal thread part is the worm screw nut that is fixed on the inner peripheral surface of cylindrical portion.
Above-mentioned have brushless motor in preferably, also possess the first worm shaft, it is chimeric and outstanding laterally from one end of cylindrical portion with internal thread part that its utilization screws togather effect; With the second worm shaft, it is chimeric and outstanding laterally from the other end of cylindrical portion with internal thread part that its utilization screws togather effect.
Above-mentioned have brushless motor in preferably, also possesses the end cover of the axial end of rotation of covering stator, in the case of the section taking rotating shaft as normal is observed, the first worm shaft and the second worm shaft comprise the depressed part that utilizes the external thread part of the effect of the screwing togather arcuation chimeric with internal thread part and cave in to inner circumferential side compared with the circumference being made up of external thread part separately, and end cover comprises the through hole of the shape of the rotation with restriction the first worm shaft and the second worm shaft.
According to the utility model, can provide the brushless motor that has that worm shaft can free-extension.
Brief description of the drawings
Fig. 1 is the front view that represents the structure that has brushless motor in the first execution mode of the present utility model.
Fig. 2 be in the first execution mode of the present utility model have brushless motor to comprise the cutaway view in the situation of plane cutting of rotating shaft R.
Fig. 3 is the A portion enlarged drawing of Fig. 2.
Fig. 4 A is the cutaway view of the structure (inner peripheral surface at cylindrical case directly forms ridge) that schematically shows the variation of internal thread part.
Fig. 4 B is the cutaway view that schematically shows the example of the pitch of internal thread part 12a and 12b.
Fig. 4 C is the cutaway view that schematically shows the example of the pitch of internal thread part 12c and 12d.
Fig. 5 is the cutaway view along V-V line in Fig. 1.
Fig. 6 is the side view that represents the structure that has brushless motor in the first execution mode of the present utility model.
Fig. 7 is the side view that represents the structure that has brushless motor in the second execution mode of the present utility model.
Fig. 8 is near the enlarged drawing of through hole 22a of end cover 22.
Fig. 9 is the front view that represents the structure that has brushless motor in the 3rd execution mode of the present utility model.
Figure 10 be in the 3rd execution mode of the present utility model have brushless motor to comprise the cutaway view in the situation of plane cutting of rotating shaft R.
The explanation of Reference numeral: 10,10a, 10b ... rotor; 11,11a, 11b ... cylindrical case; 12 ... ridge; 12a, 12b, 12c, 12d ... internal thread part; 13,13c, 13d ... rotor core; 13a ... jut; 13b ... magnetic chip; 14,14a, 14b ... commutator; 15,15a, 15b ... coil; 20 ... stator; 21 ... shell; 22 ... end cover; 22a ... through hole; 23,23a, 23b ... magnet; 24,24a, 24b ... brush; 25,25a, 25b ... connector; 26,26a, 26b ... bracket assembly; 30,30a, 30b ... bearing; 31,32 ... worm shaft; 31a ... external thread part; 31b ... depressed part; CL ... circumference; CP ... plane; D1, D2, D11, D12, D21, D22 ... arrow; R ... rotating shaft.
Embodiment
Below, based on accompanying drawing, execution mode of the present utility model is described.
(the first execution mode)
First, the structure that has brushless motor in present embodiment is described.
Fig. 1 is the front view that represents the structure that has brushless motor in the first execution mode of the present utility model.Fig. 2 be in the first execution mode of the present utility model have brushless motor to comprise the cutaway view in the situation of plane cutting of rotating shaft R.In addition in Fig. 2 and Figure 10, omit, the diagram of coil 15.
With reference to Fig. 1 and Fig. 2, in present embodiment have brush direct current (DC) motor be at the partial configuration of common configuration axle become the motor of the cylinder of hollow, drive worm shaft 31 and 32.This has brushless motor to possess rotor 10, stator 20, bearing 30, worm shaft 31 and 32.Stator 20 has drum, and rotor 10 is arranged on the inner circumferential side of stator 20.Bearing 30 supports it at the two ends of rotor 10.Thus, rotor 10 can rotate with respect to stator 20.Worm shaft 31 and 32 inserts rotor 10.
Rotor 10 comprises cylindrical case (example of cylindrical portion) 11, internal thread part 12a, 12b, 12c and 12d, rotor core 13, commutator 14 and coil 15 (Fig. 5).Utilize the plane CP of the central portion of rotating shaft R direction that rotor 10 is divided into left and right in hypothesis, the rotor 10b (a bitrochanteric example) that is present in the rotor 10a (example of the first rotor) in left side in Fig. 2 and is present in right side in Fig. 2 is in the direction alignment arrangements along rotating shaft R.
Cylindrical case 11, along rotating shaft R horizontal expansion in Fig. 2, has hollow in the part of the rotating shaft R that becomes rotor 10.The cylindrical case 11 of rotor 10a is inserted with worm shaft 31, and the cylindrical case 11 of rotor 10b is inserted with worm shaft 32.The end in worm shaft 31 left side from Fig. 2 of the cylindrical case 11 of rotor 10a is outstanding laterally along the bearing of trend of rotating shaft R.The end on worm shaft 32 right side from Fig. 2 of the cylindrical case 11 of rotor 10b is outstanding laterally along the bearing of trend of rotating shaft R.Worm shaft 31 and 32 respectively can be for rotor 10 dismounting.
In addition, also can make the side in two worm shafts 31 and 32 is solid shafting, and making the opposing party is quill shaft, inserts in quill shaft in the interior end by solid shafting of cylindrical case 11.
Internal thread part 12a and 12b are arranged at the cylindrical case 11 of rotor 10a, and internal thread part 12c and 12d are arranged at the cylindrical case 11 of rotor 10b.
Rotor core 13 is fixed on the outer peripheral face of cylindrical case 11.Rotor core 13 for example by rotating shaft R direction respectively the dull and stereotyped multi-disc magnetic chip 13b of stacked conduct form.
Fig. 5 is the cutaway view along V-V line in Fig. 1.
With reference to Fig. 5, rotor core 13 has ten five the jut 13as outstanding to the direction of magnet 23 (peripheral direction).That is, in the situation that being brush motor, jut is outstanding to peripheral direction, thus jut gap each other broaden, the coil of can easily reeling.In addition, in Fig. 5, there are 15 grooves, but the groove number of rotor core 13 is arbitrarily.
Coil 15 for example, is wound in respectively the jut 13a of rotor core 13 via insulating material (, powdery paints, insulator, not shown).Coil 15 is electrically connected with commutator 14.
With reference to Fig. 1 and Fig. 2, commutator 14 is fixed on the outer peripheral face of cylindrical case 11.Commutator 14 is arranged on rotor core 13 and is present between the bearing 30 on right side in Fig. 2.
Stator 20 comprises shell 21, end cover 22, magnet 23, brush 24, connector 25 and bracket assembly 26.
Shell 21 has shape cylindraceous, contains rotor 10 therein.
End cover 22 is installed on shell 21, blocks the opening at the both ends of the rotating shaft R direction of stator 20.
Magnet 23 is fixed on the inner peripheral surface of shell 21, opposed across small space and rotor core 13.Magnet 23 has drum, along the circumferencial direction of cylinder, is alternately formed with N utmost point magnetic pole and S utmost point magnetic pole.Periodically be formed with six magnetic poles altogether at magnet 23.The number of magnetic poles of magnet 23 is arbitrarily.
Brush 24 is for example made up of carbon.Brush 24 contacts with commutator 14.
Connector 25 is electrically connected with brush 24, is the part of accepting the supply of electric power from outside.
Bracket assembly 26 contains connector 25 and brush 24.Bracket assembly 26 is fixed on the outer peripheral face of shell 21.
Fig. 3 is the A portion enlarged drawing of Fig. 2.
With reference to Fig. 2 and Fig. 3, internal thread part 12a, 12b, 12c and 12d are here worm screw nuts, are fixed on the inner peripheral surface of cylindrical case 11.Internal thread part 12a and 12b utilize the effect of screwing togather and worm shaft 31 chimeric.Equally, be also provided with two internal thread part 12c and 12d at the cylindrical case 11 of rotor 10b.Internal thread part 12c and 12d utilize the effect of screwing togather and worm shaft 32 chimeric.
Fig. 4 A and Fig. 4 B and Fig. 4 C are the cutaway views that schematically shows the structure of the variation of internal thread part.
Internal thread part screws togather the effect parts chimeric with worm shaft as long as being arranged on the inner peripheral surface of cylindrical portion and utilization, also can be the worm screw nut that replaces the inner peripheral surface that is fixed on cylindrical case 11, and as shown in Figure 4 A, be the ridge 12 that is directly formed at the inner peripheral surface of cylindrical case 11.Internal thread part can be formed at a part for the inner peripheral surface of cylindrical case 11, also can be formed at the inner peripheral surface entirety of cylindrical case 11.
Internal thread part 12a and 12b and internal thread part 12c and 12d can have mutually on the contrary towards the ridge of (side is that right-handed thread, the opposing party are left hand thread), also can have identical towards ridge.In addition, can be also the ridge that internal thread part 12a and 12b have first segment distance as shown in Figure 4 B, internal thread part 12c and 12d have from first segment as shown in Figure 4 C apart from different pitch that is second section distance.In addition, also can replace internal thread 12b and internal thread 12c, the parts of configuration as having removed the sliding bearing of ridge of internal thread 12b and internal thread 12c.
Fig. 6 is the side view that represents the structure that has brushless motor in the first execution mode of the present utility model.
With reference to Fig. 6, end cover 22 comprises the through hole 22a of the part that is formed at rotating shaft R.Worm shaft 31 and 32 is outstanding from through hole 22a respectively.In the case of the section taking rotating shaft as normal is observed, worm shaft 31 and 32 has respectively for example toroidal.Worm shaft 31 and 32 can move at the bearing of trend of rotating shaft R by through hole 22a respectively.
Next, the action that has brushless motor in present embodiment is described.
With reference to Fig. 2, if supply with electric power by connector 25, brush 24 and commutator 14, to coil 15 inflow currents.If produce magnetic field from coil 15 to coil 15 inflow currents, between the magnetic field producing from coil 15 and the magnetic field of magnet 23, produce attraction or repulsive force.Its result, rotor 10 rotates.Due to the rotation of rotor 10, worm shaft 31 and 32 is driven along the direction of rotating shaft R respectively.
Worm shaft 31 and 32 respectively with the ridge of internal thread part 12a, 12b, 12c and 12d towards and direction corresponding to the direction of rotation of rotor 10 on, move point-blank.For example, in the case of internal thread part 12a and 12b and internal thread part 12c and 12d have mutually on the contrary towards ridge, at rotor 10 during to direction rotation with shown in arrow D1, worm shaft 31 relatively moves (protruding from rotor 10 left towards Fig. 2) with respect to shell 21 to the direction of arrow D11, and worm shaft 32 relatively moves (right-hand protrusion from rotor 10 to Fig. 2) with respect to shell 21 to the direction of arrow D21.Rotor 10 to the direction shown in arrow D2 (with the opposite direction shown in arrow D1 towards) when rotation, worm shaft 31 relatively moves (to the inner storage of rotor 10) with respect to shell 21 to the direction of arrow D12, and worm shaft 32 relatively moves (to the inner storage of rotor 10) with respect to shell 21 to the direction of arrow D22.
In the case of internal thread part 12a and 12b and internal thread part 12c and 12d have identical towards ridge, at rotor 10 during to direction rotation shown in arrow D1, worm shaft 31 relatively moves (from rotor 10 to Fig. 2, left protrudes) with respect to shell 21 to the direction of arrow D11, and worm shaft 32 relatively moves (to the inner storage of rotor 10) with respect to shell 21 to the direction of arrow D22.At rotor 10 during to direction rotation shown in arrow D2, worm shaft 31 relatively moves (to the inner storage of rotor 10) with respect to shell 21 to the direction of arrow D12, worm shaft 32, with respect to shell 21, relatively moves (right-hand protrusion from rotor 10 to Fig. 2) to the direction of arrow D21.
The translational speed of worm shaft 31 and 32 can regulate by the pitch of the ridge of internal thread part 12a, 12b, 12c and 12d.; in the case of the pitch of the ridge of internal thread part 12a, 12b, 12c and 12d is larger; the amount of movement that rotor often revolves the worm shaft 31 and 32 turning around increases; in the case of the pitch of the ridge of internal thread part 12a, 12b, 12c and 12d is less, the amount of movement that rotor often revolves the worm shaft 31 and 32 turning around diminishes.In the case of the pitch of the ridge of internal thread part 12a and 12b, different from the pitch of the ridge of internal thread part 12c and 12d, rotor often revolves the amount of movement of the worm shaft 31 turning around, often to revolve the amount of movement of the worm shaft 32 turning around different from rotor.
In the present embodiment, by having made brushless motor rotation, can make to be entrenched in worm shaft in the cylindrical portion of rotor flexible.Thus, the rotation of motor is not passed to worm shaft via gear unit, thus can prevent the generation from the noise of gear unit, and can easily rotatablely moving of motor be converted to the axial rectilinear motion of rotation (contractility).And, owing to can utilizing a motor to drive two worm shafts, so can, with a motor displacement two motors in order to drive two worm shafts to use in the past, can realize the miniaturization of Linear actuator.Its result, can realize the high performance of motor.And, for have brushless motor in the situation that, because the jut of rotor core is outstanding to peripheral direction, so jut gap each other broaden, the coil of can easily reeling.
(the second execution mode)
Fig. 7 is the side view that represents the structure that has brushless motor in the second execution mode of the present utility model.Fig. 8 is near the enlarged drawing of through hole 22a of end cover 22.
With reference to Fig. 7 and Fig. 8, in the present embodiment, in the case of section taking rotating shaft R as normal is observed, worm shaft 31 there is across corner chamfering roughly tetragonal shape.Otherwise, there is the relative dihedral shape of part tool at circumference., worm shaft 31 comprise utilize the effect of screwing togather and the external thread part 31a of internal thread part 12a and the chimeric arcuation of 12b and compared with the circumference CL obtaining by the arc that extends external thread part 31a to the depressed part 31b of inner circumferential side depression.Worm shaft 32 also has the section shape identical with worm shaft 31.
In addition, in the case of the section taking rotating shaft R as normal is observed, if worm shaft 31 and 32 comprises the external thread part of arcuation and compared with the circumference being formed by external thread part to the depressed part of inner circumferential side depression, also can there is quadrangle polygonal shape (for example triangle, pentagon) in addition.
The through hole 22a of end cover 22 has the shape similar to the section shape of worm shaft 31 and 32, and has the slightly large size of size than the section of worm shaft 31 and 32.Through hole 22a is as long as shape and the size of the rotation of restriction worm shaft 31 and 32, as long as end cover 22 has than circumference CL to the side-prominent part of rotating shaft R.
In addition, owing to having, the structure that has brushless motor of structure beyond brushless motor above-mentioned and the first execution mode is almost identical, so mark identical symbol for identical parts, does not repeat their explanation.
According to present embodiment, in the time that rotor rotates with respect to stator, can limit together with the rotation of worm shaft and rotor and rotate by through hole.Its result, can limit the rotation of worm shaft and make worm shaft rectilinear movement (stretching).
(the 3rd execution mode)
Fig. 9 is the front view that represents the structure that has brushless motor in the 3rd execution mode of the present utility model.Figure 10 be in the 3rd execution mode of the present utility model have brushless motor to comprise the cutaway view in the situation of plane cutting of rotating shaft R.
With reference to Fig. 9 and Figure 10, in the present embodiment, the cylindrical case 11a of rotor 10a for example separates with the plane CP of central portion with the cylindrical case 11b of rotor 10b, and rotor 10a and 10b are driven respectively independently of each other.
Rotor core 13 comprises the rotor core 13c of the outer peripheral face that is fixed on cylindrical case 11a and is fixed on the rotor core 13d of the outer peripheral face of cylindrical case 11b.
Commutator 14 comprises the commutator 14a of the outer peripheral face that is fixed on cylindrical case 11a and is fixed on the commutator 14b of the outer peripheral face of cylindrical case 11b.
Magnet 23 comprise with the opposed magnet 23a of rotor core 13c and with the opposed magnet 23b of rotor core 13d.
Brush 24 comprises the brush 24a contacting with commutator 14a and the brush 24b contacting with commutator 14b.
Connector 25 comprises the connector 25a being electrically connected with brush 24a and the connector 25b being electrically connected with brush 24b.
Bracket assembly 26 comprises accommodates the bracket assembly 26a of connector 25a and brush 24a and accommodates connector 25b and the bracket assembly 26b of brush 24b.
Bearing 30 is included in the bearing 30a two ends of rotor 10a it being supported and the bearing 30b it being supported at the two ends of rotor 10b.
If supply with electric power by connector 25a, brush 24a and commutator 14a, to coil 15a inflow current.If produce magnetic field from coil 15a to coil 15a inflow current, rotor 10a rotation.Due to the rotation of rotor 10a, worm shaft 31 is driven along the direction of rotating shaft R.Equally, if supply with electric power by connector 25b, brush 24b and commutator 14b, to coil 15b inflow current.If produce magnetic field from coil 15b to coil 15b inflow current, rotor 10b rotation.Due to the rotation of rotor 10b, worm shaft 32 is driven along the direction of rotating shaft R.
In addition, owing to having, the structure that has brushless motor of structure beyond brushless motor above-mentioned and the first execution mode is almost identical, so mark identical symbol for identical parts, does not repeat their explanation.
According to present embodiment, because a motor has two drive systems, so can give respectively the revolving force of each rotor to two worm shafts, can drive independently of each other two worm shafts.
(other)
In the above-described embodiment, the situation that two worm shafts 31 and 32 are inserted to cylindrical case 11 is illustrated, but also can only a worm shaft be inserted to cylindrical case 11 in the mode that connects cylindrical case 11.But, in this case, internal thread part 12a, 12b, 12c and 12d need to have identical towards ridge.
In the situation that 2 worm shafts 31 and 32 being inserted to cylindrical case 11, the hollow of the cylindrical case 11 in hollow and the rotor 10b of the cylindrical case 11 in rotor 10a can couple together, and also can be separated by wall.The hollow of the cylindrical case 11 in hollow and the rotor 10b of the cylindrical case 11 in rotor 10a is separated by wall, the position of wall can be the position of the plane CP of central portion, can be also the position arbitrarily beyond it.
Can suitably combine above-mentioned execution mode.For example, by combination the second execution mode and the 3rd execution mode, also can be to the brushless motor that has that possesses two rotor 10a and 10b shown in Figure 10, use the worm shaft 31 shown in Fig. 8 and 32 and end cover 22.
Should consider that above-mentioned execution mode is the execution mode that illustrates instead of limit on all points.Scope of the present utility model is not above-mentioned explanation but illustrates by claims, intention comprise with the meaning and the scope of claims equalization in all changes.
Claims (8)
1. having a brushless motor, is the brushless motor that has that drives worm shaft, it is characterized in that possessing:
Stator; With
Be arranged at the rotor of the inner circumferential side of described stator,
Described rotor comprises: have the cylindrical portion of hollow and be arranged on the inner peripheral surface of described cylindrical portion and utilization screws togather the effect internal thread part chimeric with described worm shaft in the part that becomes rotating shaft.
2. according to claim 1 have a brushless motor, it is characterized in that,
Described have brushless motor to drive the first worm shaft and the second worm shaft,
Described rotor is included in along the first rotor and second rotor of alignment arrangements in the direction of rotating shaft,
The described internal thread part of described the first rotor and described the first worm shaft are chimeric, and described bitrochanteric described internal thread part and described the second worm shaft are chimeric.
3. according to claim 2 have a brushless motor, it is characterized in that,
The described internal thread part of described the first rotor have first towards ridge,
Described bitrochanteric described internal thread part have with described first towards the opposite towards that is second towards ridge.
4. according to claim 2 have a brushless motor, it is characterized in that,
The described internal thread part of described the first rotor has the ridge of first segment distance,
Described bitrochanteric described internal thread part has from described first segment apart from different pitches that is the ridge of second section distance.
5. according to the brushless motor that has described in any one in claim 2～4, it is characterized in that,
The described cylindrical portion of described the first rotor and described bitrochanteric described barrel from,
Described the first rotor is accepted electric power by the first commutator and is supplied with, and described the second rotor is accepted electric power by the second commutator different from described the first commutator and supplied with.
6. according to claim 1 have a brushless motor, it is characterized in that,
Described internal thread part is the worm screw nut that is fixed on the inner peripheral surface of described cylindrical portion.
7. according to claim 1 have a brushless motor, it is characterized in that also possessing:
The first worm shaft, it is chimeric and outstanding laterally from one end of described cylindrical portion with described internal thread part that its utilization screws togather effect; With
The second worm shaft, it is chimeric and outstanding laterally from the other end of described cylindrical portion with described internal thread part that its utilization screws togather effect.
8. according to claim 7 have a brushless motor, it is characterized in that,
Also possess the end cover of the axial end of rotation that covers described stator,
In the case of the section taking described rotating shaft as normal is observed, described the first worm shaft and the second worm shaft comprise the depressed part that utilizes the external thread part of the effect of the screwing togather arcuation chimeric with described internal thread part and cave in to inner circumferential side compared with the circumference being made up of described external thread part separately
Described end cover comprises the through hole of the shape of the rotation with described the first worm shaft of restriction and the second worm shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013146155A JP2015019525A (en) | 2013-07-12 | 2013-07-12 | DC motor with brush |
| JP2013-146155 | 2013-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203984150U true CN203984150U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420303883.9U Expired - Lifetime CN203984150U (en) | 2013-07-12 | 2014-06-09 | There is brushless motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015019525A (en) |
| CN (1) | CN203984150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453535A (en) * | 2017-08-21 | 2017-12-08 | 北京精密机电控制设备研究所 | A kind of Double-stroke electromechanical actuator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10084265B2 (en) | 2015-07-29 | 2018-09-25 | Dai-Ichi Seiko Co., Ltd. | Board-connecting electric connector device |
| JP2021136248A (en) | 2020-02-21 | 2021-09-13 | 株式会社ディスコ | Processing method for device wafer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5265222U (en) * | 1975-11-10 | 1977-05-14 | ||
| JPS5681058A (en) * | 1979-11-30 | 1981-07-02 | Inoue Japax Res Inc | Control device for transverse in connection with motor |
| JPH074492A (en) * | 1993-06-18 | 1995-01-10 | Marutomo S S:Kk | Screw device |
| JPH07236250A (en) * | 1994-02-23 | 1995-09-05 | Katsuragawa Electric Co Ltd | Shaft movement type motor |
| JP3011128U (en) * | 1994-11-14 | 1995-05-16 | 甲子夫 小松 | Fine feed mechanism for screws |
| JP3639674B2 (en) * | 1996-06-21 | 2005-04-20 | 桂川電機株式会社 | Axis moving type motor |
| JP2011205737A (en) * | 2010-03-24 | 2011-10-13 | Jtekt Corp | Electric actuator and transmission drive device |
| JP2012045978A (en) * | 2010-08-24 | 2012-03-08 | Jtekt Corp | Steering device for vehicle |
-
2013
- 2013-07-12 JP JP2013146155A patent/JP2015019525A/en active Pending
-
2014
- 2014-06-09 CN CN201420303883.9U patent/CN203984150U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107453535A (en) * | 2017-08-21 | 2017-12-08 | 北京精密机电控制设备研究所 | A kind of Double-stroke electromechanical actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015019525A (en) | 2015-01-29 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141203 |