JP3913658B2 - Motor with electromagnetic clutch - Google Patents

Motor with electromagnetic clutch Download PDF

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Publication number
JP3913658B2
JP3913658B2 JP2002295975A JP2002295975A JP3913658B2 JP 3913658 B2 JP3913658 B2 JP 3913658B2 JP 2002295975 A JP2002295975 A JP 2002295975A JP 2002295975 A JP2002295975 A JP 2002295975A JP 3913658 B2 JP3913658 B2 JP 3913658B2
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JP
Japan
Prior art keywords
motor
worm wheel
electromagnetic clutch
clutch
input shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2002295975A
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Japanese (ja)
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JP2004135403A (en
Inventor
真一 吉田
正明 弓削
良治 志村
佳明 横田
有一 高村
Original Assignee
株式会社大井製作所
自動車電機工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to JP2002295975A priority Critical patent/JP3913658B2/en
Publication of JP2004135403A publication Critical patent/JP2004135403A/en
Application granted granted Critical
Publication of JP3913658B2 publication Critical patent/JP3913658B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a motor with an electromagnetic clutch used as a drive source for opening and closing a vehicle opening / closing body such as a back door provided at the rear end of a vehicle body so as to be freely opened and closed.
[0002]
[Prior art]
An example of this type of motor with an electromagnetic clutch is shown in FIG. 12 (see, for example, Patent Document 1).
[0003]
As shown in FIG. 12, the gear case 60 a of the electromagnetic clutch-equipped motor 60 is attached to the case 61 a of the speed reduction mechanism 61. In this case 61a, the large-diameter gear portion 62a of the first reduction gear 62 meshes with the output gear 60b of the motor 60. The small-diameter gear portion 62b of the first reduction gear 62 is engaged with an input gear 63a of an electromagnetic clutch 63 that intermittently transmits power of the motor 60.
[0004]
The large-diameter gear portion 64a of the second reduction gear 64 is engaged with the output gear 63b of the electromagnetic clutch 63. Further, the large-diameter gear portion 64a of the second reduction gear 64 meshes with the input gear 65a of the rotary encoder 65 that detects an electric pulse. Further, the small-diameter gear portion 64 b of the second reduction gear 64 is engaged with the large-diameter gear portion 66 a of the pinion 66, and the output gear portion 66 b of the pinion 66 protrudes outward from the case 61 a of the reduction mechanism 61. An output gear portion 66b of the pinion 66 protruding from the case 61a meshes with a rack 5 that opens and closes a back door (opening / closing body) 3 described later.
[0005]
As shown in FIG. 11, the back door 3 is swingably supported by a hinge 4 on the upper edge portion of the rear end opening 2 of the vehicle body 1 of the automobile. The arm portion 3a protruding above the back door 3 to the indoor side and one end of the rack 5 are rotatably supported by the support shaft 6. The rack 5 is a holding portion 67 attached to the case 61a of the speed reduction mechanism 61. It is hold | maintained so that a reciprocation is possible in a longitudinal direction via. Further, the rear end portion of the vehicle body 1 and the back door 3 are connected to both end portions 7 a and 7 b of a gas stay 7 that generates a biasing force that assists in opening and closing the back door 3.
[0006]
Then, in the fully closed position A of the back door 3 indicated by a solid line in FIG. 11, when the electromagnetic clutch 63 is connected (ON) and the motor 60 is rotated forward, the pinion 66 is rotated forward via the speed reduction mechanism 61, The rack 5 meshed with the pinion 66 moves backward. Thereby, the back door 3 passes through the neutral position B, reaches the fully open position C, and is opened. Similarly, when the motor 60 is rotated in the reverse direction, the rack 5 moves forward via the pinion 66 and the back door 3 is closed.
[0007]
Further, the back door 3 can be opened and closed without driving the motor 60 by disengaging (off) the electromagnetic clutch 63. At this time, since the input of the rotary encoder 65 is taken from the second reduction gear 64 on the output gear 63b side of the electromagnetic clutch 63, the movement when the back door 3 is manually opened / closed can also be detected. Thus, when the back door 3 exceeds the neutral position B, the back door 3 is automatically swung from the neutral position B to the fully open position C or from the neutral position B to the fully closed position A by the auxiliary biasing force of the gas stay 7 and automatically. Opened and closed.
[0008]
[Patent Document 1]
JP 2002-188361 A (page 3, FIG. 3)
[0009]
[Patent Document 2]
Japanese Patent Laid-Open No. 2001-2800000 (page 3, FIG. 8)
[0010]
[Problems to be solved by the invention]
However, in the conventional motor 60 with an electromagnetic clutch, a large speed reduction mechanism 61 having a large-diameter first reduction gear 62 and a second reduction gear 64 is indispensable for reducing the output of the motor 60 with the entire structure. Became larger.
[0011]
Accordingly, the present invention has been made to solve the above-described problems, and provides an electromagnetic clutch-equipped motor in which a small reduction mechanism composed of a worm and a worm wheel is incorporated to reduce the overall size. With the goal.
[0012]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a motor shaft capable of rotating in the forward and reverse directions, a worm formed near one end of the motor shaft, a worm wheel meshing with the worm, and the power of the motor shaft linked to the worm wheel. In the motor with an electromagnetic clutch provided with an electromagnetic clutch for intermittently transmitting and receiving, the worm wheel is formed in a structure having external teeth and internal teeth, and the external teeth of the worm wheel are engaged with the worm, The outer teeth formed on the outer periphery of the torque transmission plate are engaged with the inner teeth of the worm wheel, while the electromagnetic clutch is formed with the clutch body, the coil wound around the clutch body, and the outer spline on the outer periphery of the tip. In addition, an input shaft side clutch plate is provided at the base end, the input shaft is rotatably supported in the clutch body, and the input shaft side clutch is provided at the base portion. An output shaft side clutch plate that is attracted to and separated from the touch plate is provided, and an output gear that is linked to a load is formed at the base end so as to be rotatably supported in the input shaft; An urging member that urges the output shaft side clutch plate in a direction away from the input shaft side clutch plate when energized, and an axial direction of the worm wheel and an adsorption / separation direction of the output shaft side clutch plate; And the outer spline on the outer periphery of the tip end of the input shaft is meshed with the inner spline formed on the inner periphery of the torque transmission plate, and the worm wheel is moved against the outer spline on the outer periphery of the tip end of the input shaft. It is possible to move in the axial direction via the torque transmission plate.
[0013]
In this motor with an electromagnetic clutch, the worm wheel meshing with the worm is axially movable with respect to the outer spline on the outer periphery of the input end of the electromagnetic clutch via the torque transmission plate, so it constitutes a part of the speed reduction mechanism The worm wheel to be operated and the input shaft of the electromagnetic clutch are coaxially arranged, so that the size of the entire motor can be reduced.
[0014]
According to a second aspect of the present invention, there is provided the electromagnetic clutch-equipped motor according to the first aspect, wherein the worm of the motor shaft and the worm wheel are rotatably accommodated in a gear case via respective bearings. A reinforcing member is interposed between the wheel bearing and the worm wheel.
[0015]
In this motor with an electromagnetic clutch, since the reinforcing member is interposed between the worm wheel bearing of the gear case and the worm wheel, wear of the sliding portion of the worm wheel bearing is surely prevented, and the worm wheel is always It is rotated smoothly.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0017]
1 is an exploded perspective view showing a motor with an electromagnetic clutch according to an embodiment of the present invention, FIG. 2 is an exploded sectional view of the motor with an electromagnetic clutch, FIG. 3 is a bottom view of a motor portion of the motor with the electromagnetic clutch, and FIG. Is a sectional view of the motor part, FIG. 5 is a sectional view of the motor with the electromagnetic clutch, FIG. 6A is a plan view of the electromagnetic clutch used in the motor with the electromagnetic clutch, and FIG. 6B is a sectional view of the electromagnetic clutch. FIG. 6 (c) is a bottom view of the electromagnetic clutch, FIG. 7 is an exploded sectional view of the electromagnetic clutch, FIG. 8 is an exploded sectional view of the main part of the motor with the electromagnetic clutch, and FIG. 9B is a plan view of the worm wheel used in the motor with a clutch, FIG. 10A is a cross-sectional view of a torque transmission plate used in the motor with the electromagnetic clutch, and FIG. It is a top view of the torque transmission plate . In addition, FIG. 11 is used.
[0018]
As shown in FIGS. 1 and 2, the motor 10 with an electromagnetic clutch is used as a drive source of a back door (load) 3 that opens and closes a rear end opening 2 of a vehicle body 1 of an automobile, for example, and has an upper surface opened. A metal box-shaped housing 11 having a bottom portion 11a, a motor 20 fastened and fixed to the stepped portion 11d of the housing 11 by screws 12, and the housing 11 is accommodated between the bottom portion 11a and the motor 20 in the housing 11, And an electromagnetic clutch 40 for intermittently transmitting the power of the motor 20.
[0019]
As shown in FIGS. 1 to 5, the motor 20 includes a substantially cylindrical yoke (motor case) 21 opened at one end and a flange portion 21 b around the open end 21 a of the yoke 21 through a screw 13. A fixed die-cast gear case 22 is provided. A pair of magnets 24, 24 are fixed to the inner peripheral surface 21c of the yoke 21 with an adhesive or the like. The armature shaft (motor shaft) 26 is composed of a bearing 25a fitted to the bottomed cylindrical portion 21d at the other end of the yoke 21 and bearings 25b and 25c fitted near both ends of the shaft hole 22a of the gear case 22. It is rotatably supported.
[0020]
As shown in FIG. 4, the armature shaft 26 has a worm 27 formed in the vicinity of one end thereof. At the center of the other end surface of the armature shaft 26, a recess 26a for accommodating half of the steel ball 28a is formed. The steel ball 28a is in contact with a bearing plate 29a fitted and fixed to the bottomed cylindrical portion 21d of the yoke 21. Furthermore, a recess 26b for accommodating half of the steel ball 28b is formed at the center of one end face of the armature shaft 26. The steel ball 28b is in contact with a thrust plug 29b screwed into the screw hole 22b of the shaft hole 22a of the gear case 22.
[0021]
An armature 30 is attached to a position of the armature shaft 26 facing the pair of magnets 24, 24. The armature 30 includes an armature core 30a fixed to the armature shaft 26 and having a coil winding portion 30b having a predetermined number of slots, and an armature coil 30c wound around the coil winding portion 30b of the armature core 30a. Has been.
[0022]
Further, a commutator 31 is fixed at a position facing the boundary between the yoke 21 and the gear case 22 of the armature shaft 26. The commutator 31 includes the same number of commutator pieces 31a as the coil winding portion 30b of the armature core 30a, and each commutator piece 31a and the armature coil 30c are electrically connected to each other.
[0023]
Furthermore, the opening end of the shaft hole 22a of the gear case 22 is a large-diameter hole portion 22c, and a pair of brushes 33, 33 are interposed via a holder 32 at a position facing the commutator 31 in the large-diameter hole portion 22c. Is attached so as to contact the commutator piece 31a. Each brush 33 is electrically connected to a motor control circuit (not shown). Then, when the door opening switch of this motor control circuit is switched from OFF to ON, current flows through the armature 30 and the armature shaft 26 rotates forward, and when the door closing switch of the motor control circuit is switched from OFF to ON, An electric current flows through the armature 30 or the like so that the armature shaft 26 rotates in the reverse direction.
[0024]
As shown in FIGS. 2 and 4, a shaft hole 22a is formed substantially at the center of the gear case 22, and an annular concave reduction mechanism housing portion 22d is formed in communication with the shaft hole 22a. A cylindrical boss (worm wheel bearing) 23 is integrally formed at the center of the speed reduction mechanism housing portion 22d. The boss 23 is fitted with a substantially cylindrical bush (reinforcing member) 34 made of metal by press fitting or the like. A worm wheel 35 is rotatably supported on the outer periphery of the bush 34.
[0025]
As shown in FIGS. 8, 9A, and 9B, the worm wheel 35 is formed in an annular shape from a synthetic resin, and external teeth 35a and internal teeth 35b are integrally formed on the outside and inside thereof. . In addition, an annular flange 35c is integrally projected toward the radial center at the center in the axial direction inside the worm wheel 35, and an inner tooth 35b is formed on the upper side, and an annular ring is formed on the lower side. A concave sliding portion 35d is formed. The outer teeth 35 a of the worm wheel 35 are engaged with the worm 27 of the armature shaft 26, and the annular concave sliding portion 35 d below the flange portion 35 c of the worm wheel 35 slides on the outer periphery of the bush 34. It has come to be. The worm 27 and the worm wheel 35 are housed in the speed reduction mechanism housing portion 22d of the gear case 22 and constitute a speed reduction mechanism.
[0026]
As shown in FIGS. 5 and 8, the outer teeth 36 a formed on the outer periphery of the torque transmission plate 36 made of metal and in the shape of a disc are meshed with the inner teeth 35 b of the worm wheel 35. As shown in FIGS. 8, 10 (a) and 10 (b), an inner spline 36 b is formed on the inner periphery of the torque transmission plate 36. The inner spline 36b is meshed with an outer spline 43a on the outer periphery of the distal end of the input shaft 43 of the electromagnetic clutch 40 described later.
[0027]
Further, as shown in FIGS. 5 and 8, an annular plate-like spacer 37 made of a synthetic resin is fitted into the upper end of the inner teeth 35 b of the worm wheel 35. As a result, the outer teeth 36a of the torque transmission plate 36 have a predetermined amount (for example, 0.3 mm) along the axial direction between the flange 35c of the worm wheel 35 and the spacer 37 with respect to the inner teeth 35b of the worm wheel 35. To slide. One end opening of the speed reduction mechanism housing portion 22d of the gear case 22 is covered with a metal annular ring-shaped stopper plate 38 fastened to the gear case 22 with screws 14. Thus, the worm wheel 35 is movable along the axial direction by a predetermined amount (for example, 0.2 mm) between the bottom surface 22e of the speed reduction mechanism housing portion 22d of the gear case 22 and the stopper plate 38.
[0028]
As shown in FIGS. 1, 2 and 4 to 7, the electromagnetic clutch 40 includes an annular clutch body (field yoke) 41, a coil 42 wound around the clutch body 41, and an outer periphery on the outer periphery of the tip. A cylindrical input that forms a spline 43a and is fixed to an input shaft side friction plate 44 as an input shaft side clutch plate at a base end 43b, and is rotatably supported in a ring-shaped clutch body 41 via a bearing 45. An output shaft side friction plate 47 as an output shaft side clutch plate that is attracted to and separated from the input shaft side friction plate 44 is attached to the shaft 43 and an annular plate-like flange portion 46a of the base portion, and a back door (load) is attached to the base end. And an output shaft 46 that is integrally formed with an output gear 46c that is linked to 3 and passes through the cylindrical input shaft 43 and is rotatably supported by the input shaft 43 via a pair of bearings 48, 48. The coil 42 is not energized A leaf spring (biasing member) 50 for urging the output shaft side friction plate 47 in a direction away from the input shaft side friction plate 44, and a holder 54, a wave washer 55 and a retaining ring 56 at the tip 46 d of the output shaft 46. And a magnet ring 57 attached thereto.
[0029]
As shown in FIGS. 2 to 5, the clutch main body 41 is made of a metal such as iron and has a thick annular shape to form a magnetic path, and is press-fitted into the peripheral wall portion 11 c of the housing 11. Then, it is fastened and fixed to the intermediate step portion 11e via a screw (not shown). A center hole 41 a having a circular cross section is formed in the center of the clutch body 41. An annular recess 41b is formed around the center hole 41a on the lower surface of the clutch body 41, and a coil 42 is wound around the annular recess 41b.
[0030]
As shown in FIGS. 1, 2, 5 to 7, the input shaft (clutch shaft) 43 is made of metal and formed in a cylindrical shape, and the input shaft 43 and the center hole 41 a of the annular clutch body 41. And a center hole 41a of the clutch body 41 through a bearing 45 interposed therebetween. A through-hole 43c penetrating vertically is formed in the center of the input shaft 43, and an output shaft 46 is rotatably supported through a pair of bearings 48 in the through-hole 43c. An outer spline 43 a is formed on the outer periphery of the tip of the input shaft 43, and the outer spline 43 a is engaged with the inner spline 36 b of the torque transmission plate 36.
[0031]
The worm wheel 35 is movable by a predetermined amount in the vertical direction, which is its axial direction, via the torque transmission plate 36 with respect to the outer spline 43a on the outer periphery of the tip end of the input shaft 43. Further, the outer teeth 36a of the torque transmission plate 36 are meshed with the inner teeth 35b of the worm wheel 35 so as to be slidable by a predetermined amount in the vertical direction that is the axial direction. That is, the worm wheel 35 and the torque transmission plate 36 are arranged on the same axis as the input shaft 43 of the electromagnetic clutch 40, and the output of the output shaft 46 with respect to the axial direction of the worm wheel 35 and the input shaft side friction plate 44 of the input shaft 43. The direction of suction and separation of the shaft side friction plate 47 is the same.
[0032]
A center hole 44a of the input shaft side friction plate 44 is fixed to the base end 43b of the input shaft 43 by press fitting or the like. The input shaft side friction plate 44 is formed of a ferromagnetic material such as iron in a disk shape, and the surface 44b side is housed in the recess 41b of the clutch body 41 and is close to the coil 42.
[0033]
As shown in FIGS. 2 and 5 to 7, the output shaft (clutch shaft) 46 is made of metal and is formed in a columnar shape, and a disc-shaped flange portion 46 a is integrally formed at its base portion. An outer spline 46b is formed on the outer periphery of the flange 46a, and an inner spline 47a formed on the inner periphery of the output shaft side friction plate 47 is engaged with the outer spline 46b so as to be slidable in the vertical direction. . The output shaft side friction plate 47 is formed in an annular shape with a ferromagnetic material such as iron, and an annular leaf spring 50 as an urging member is fixed to the back surface 47 c via a plurality of pins 51. . An output gear 46 c formed integrally with the base end of the output shaft 46 is engaged with a rack 5 that opens and closes the back door 3. Further, the base portion of the output shaft 46 is rotatably supported by a bearing 49 fitted in the hole portion 11 b of the bottom portion 11 a of the housing 11. Furthermore, the tip 46d of the output shaft 46 is exposed outside the outer spline 43a on the outer periphery of the tip of the input shaft 43, and this exposed state is a retaining ring that is locked in a locking groove 46e formed below the tip 46d. 52.
[0034]
When the coil 42 is energized (that is, when the electromagnetic clutch 40 is connected), the surface 47 b of the output shaft side friction plate 47 is backed by the magnetic force of the coil 42 and the input shaft side friction plate 44. 44c is adsorbed by 44c. As a result, the output shaft 46 rotates together with the input shaft 43 so that the power of the motor 20 is transmitted to the back door 3 via the output gear 46 c of the output shaft 46 and the rack 5. Further, when the coil 42 is not energized (that is, when the electromagnetic clutch 40 is disconnected), the output shaft side friction plate 47 is separated from the input shaft side friction plate 44 by the pulling force (biasing force) of the leaf spring 50. It has become. As a result, the power is transmitted to the input shaft 43 when the motor 20 is driven, but it is disconnected without being transmitted to the output shaft 46, and the output is generated when the back door 3 is manually opened and closed when the motor 20 is stopped. Only the shaft 46 rotates (idle) so that the stopped motor 20 does not become a load for manually opening and closing the back door 3. In this embodiment, the friction clutch structure is shown as an example of the electromagnetic clutch, but an electromagnetic clutch having a meshing structure may be used.
[0035]
According to the electromagnetic clutch-equipped motor 10 of the above embodiment, when the electromagnetic clutch 40 is in the connected (on) state and the motor 20 is rotated in the fully closed position A of the back door 3 shown by the solid line in FIG. The output gear 46c of the electromagnetic clutch 40 rotates forward via a speed reduction mechanism including the worm wheel 35, and the rack 5 engaged with the output gear 46c moves rearward. Thereby, the back door 3 passes through the neutral position B, reaches the fully open position C, and is opened. Similarly, when the motor 20 is rotated in the reverse direction, the rack 5 moves forward via the output gear 46c and the back door 3 is closed.
[0036]
Further, when the electromagnetic clutch 40 is in a disconnected (off) state, the back door 3 can be manually opened and closed without driving the motor 20.
[0037]
According to the electromagnetic clutch-equipped motor 10, the worm wheel 35 meshing with the worm 27 is axially movable with respect to the outer spline 43a on the outer periphery of the input shaft 43 of the electromagnetic clutch 40 via the torque transmission plate 36. Thus, the worm wheel 35 constituting a part of the speed reduction mechanism and the input shaft 43 of the electromagnetic clutch 40 can be arranged coaxially. Thereby, size reduction of the whole motor 10 with an electromagnetic clutch can be achieved.
[0038]
Further, since the outer teeth 36a of the torque transmission plate 36 are slidably engaged with the inner teeth 35b of the worm wheel 35 in the axial direction, the thrust load applied to the worm wheel 35 can be absorbed more reliably. The worm wheel 35 can be smoothly rotated. In particular, a metal bush 34 that is a reinforcing member is interposed between a cylindrical boss 23 that is a bearing for a worm wheel of the metal gear case 22 and a worm wheel 35 that is made of synthetic resin, so that a cylindrical shape is obtained. The radial load and the thrust load of the worm wheel 35 are reliably received by the bush 34 without the sliding portion of the boss 23 being worn by friction. Accordingly, the durability of the boss 23 and the worm wheel 35 can be improved, and the worm wheel 35 can be always rotated smoothly.
[0039]
In the above embodiment, the case where the motor 10 with an electromagnetic clutch is used as a drive source of the back door 3 that opens and closes the rear end opening 2 of the vehicle body 1 of the automobile has been described. Needless to say, it can be used as a drive source for other opening / closing bodies such as swing doors, slide doors, and trunk lids.
[0040]
【The invention's effect】
As described above, according to the invention of claim 1, the worm wheel meshing with the worm is movable in the axial direction with respect to the outer spline on the outer periphery of the tip end of the input shaft of the electromagnetic clutch via the torque transmission plate. The worm wheel that constitutes a part of the speed reduction mechanism and the input shaft of the electromagnetic clutch can be coaxially arranged, and the size of the entire motor can be reduced accordingly.
[0041]
According to the invention of claim 2, since the reinforcing member is interposed between the worm wheel bearing of the gear case and the worm wheel, wear of the sliding portion of the worm wheel bearing can be reliably prevented, The worm wheel can always rotate smoothly.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a motor with an electromagnetic clutch according to an embodiment of the present invention.
FIG. 2 is an exploded cross-sectional view of the motor with an electromagnetic clutch.
FIG. 3 is a bottom view of a motor portion of the motor with an electromagnetic clutch.
FIG. 4 is a sectional view of the motor portion.
FIG. 5 is a cross-sectional view of the motor with an electromagnetic clutch.
6A is a plan view of an electromagnetic clutch used in the motor with the electromagnetic clutch, FIG. 6B is a sectional view of the electromagnetic clutch, and FIG. 6C is a bottom view of the electromagnetic clutch.
FIG. 7 is an exploded sectional view of the electromagnetic clutch.
FIG. 8 is an exploded cross-sectional view of a main part of the motor with an electromagnetic clutch.
9A is a sectional view of a worm wheel used in the motor with an electromagnetic clutch, and FIG. 9B is a plan view of the worm wheel.
10A is a cross-sectional view of a torque transmission plate used for the motor with an electromagnetic clutch, and FIG. 10B is a plan view of the torque transmission plate.
FIG. 11 is a schematic side view of a vehicle using a motor with an electromagnetic clutch.
FIG. 12 is a sectional view of a conventional motor with an electromagnetic clutch.
[Explanation of symbols]
3 Back door (load)
10 Motor 23 with electromagnetic clutch Boss (bearing for worm wheel)
25a, 25b, 25c Bearing 26 Armature shaft (motor shaft)
27 Worm 34 Bush (Reinforcing member)
35 Worm wheel 35a External teeth 35b Internal teeth 36 Torque transmission plate 36a External teeth 36b Inner spline 40 Electromagnetic clutch 41 Clutch body 42 Coil 43 Input shaft 43a Outer spline 43b Base end 44 Input shaft side friction plate (input shaft side clutch plate)
46 output shaft 46a collar (base)
46c Output gear 46d Tip 47 Output shaft side friction plate (output shaft side clutch plate)
50 Leaf spring (biasing member)

Claims (2)

  1. A motor shaft capable of rotating in the forward and reverse directions, a worm formed near one end of the motor shaft, a worm wheel meshing with the worm, and an electromagnetic clutch linked to the worm wheel to intermittently transmit the power of the motor shaft In a motor with an electromagnetic clutch provided with
    The worm wheel is formed in a structure having external teeth and internal teeth, the external teeth of the worm wheel are meshed with the worm, and the external teeth formed on the outer periphery of the torque transmission plate on the internal teeth of the worm wheel The electromagnetic clutch includes a clutch body, a coil wound around the clutch body, an outer spline on the outer periphery of the tip, and an input shaft side clutch plate at the base end. An input shaft that is rotatably supported and an output shaft side clutch plate that is attracted to and separated from the input shaft side clutch plate are formed at the base portion, and an output gear that is linked to a load is formed at the base end to form an inside of the input shaft. And an output shaft that is rotatably supported by the coil and a biasing member that biases the output shaft side clutch plate away from the input shaft side clutch plate when the coil is not energized. And the outer spline on the outer periphery of the tip end of the input shaft is formed on the inner periphery of the torque transmission plate so that the axial direction of the worm wheel and the suction / separation direction of the output shaft side clutch plate are the same direction. A motor with an electromagnetic clutch, wherein the motor is engaged with a spline, and the worm wheel is movable in the axial direction via the torque transmission plate with respect to an outer spline on the outer periphery of the tip of the input shaft.
  2. A motor with an electromagnetic clutch according to claim 1,
    The worm of the motor shaft and the worm wheel are rotatably accommodated in a gear case via respective bearings, and a reinforcing member is interposed between the worm wheel bearing of the gear case and the worm wheel. A motor with an electromagnetic clutch.
JP2002295975A 2002-10-09 2002-10-09 Motor with electromagnetic clutch Expired - Fee Related JP3913658B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002295975A JP3913658B2 (en) 2002-10-09 2002-10-09 Motor with electromagnetic clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002295975A JP3913658B2 (en) 2002-10-09 2002-10-09 Motor with electromagnetic clutch

Publications (2)

Publication Number Publication Date
JP2004135403A JP2004135403A (en) 2004-04-30
JP3913658B2 true JP3913658B2 (en) 2007-05-09

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1750035A1 (en) * 2005-08-03 2007-02-07 Siemens Aktiengesellschaft Actuator with a in a transmission housing formed support ring for radial force supporting a in transmission housing rotary mounted worm wheel
US8283915B2 (en) * 2007-03-07 2012-10-09 Asmo Co., Ltd. Sensor magnet device, gear mechanism and speed reducing electric motor
JP5424498B2 (en) * 2011-01-31 2014-02-26 三井金属アクト株式会社 Power unit for moving objects
JP5545878B2 (en) * 2011-02-04 2014-07-09 三井金属アクト株式会社 Power unit for power slide device
JP5718079B2 (en) * 2011-02-07 2015-05-13 三井金属アクト株式会社 Opening and closing body drive device
JP5271370B2 (en) * 2011-02-08 2013-08-21 三井金属アクト株式会社 Power unit of power slide device
JP6002422B2 (en) * 2012-04-03 2016-10-05 ベバスト ジャパン株式会社 Drive device
CN104948058B (en) * 2015-07-06 2016-06-22 周佳超 Pendulum lock swing door actuating device
CN106329817A (en) * 2016-09-18 2017-01-11 常州机电职业技术学院 Friction wheel type transmission device

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