CN204741371U - Gear motor and automatic opening/closing means - Google Patents

Abstract

The utility model provides a gear also difficult the emergence contacts that gear motor and automatic opening/closing means, though will to centre gripping train configuration the input/output portion configuration of the motor of tossing about mutually and detection part in a department, the wire with be used for the train. In gear motor (1), be provided with train (50) in one side (L1) of axis (L) direction for motor (40), detection parts such as potentiometer (91) of the angle position of detecting output shaft (3) are set up in one side of axis direction for the train. Be provided with from the outside of casing to motor (40) power supply and to the input/output portion (49) of the testing result of the outside output sense part of casing at the opposite side of axis direction for casing (2). When passing through between train and the casing in wire (95) that extend to input/output portion from the detection part side, make next door (832) of the 3rd supporting components (83) be present in between wire (95) and train (50).

Description

Gear motor and automatic shutter unit

Technical field

The utility model relates to and a kind ofly has the gear motor of the detection part of the angle position detecting output shaft and have the automatic shutter unit of described gear motor.

Background technology

In the automatic shutter unit of the toilet lid of the Western-style toilet of automatic shutter or the lid of washing machine etc., lid material is installed on the output shaft of gear motor to drive lid.Now, for the purpose of the angle position detecting output shaft, the rear-stage side gear of output shaft and train is provided with the detection parts such as potentiometer.At this, the rear-stage side gear of output shaft and train is arranged on the opposition side (patent documentation 1) of motor relative to train.

Patent documentation 1: Japanese Unexamined Patent Publication 2005-282034 publication

In the gear motor that patent documentation 1 is recorded, the testing result externally to motor power supplying and the outside output detections parts to housing from housing is preferably carried out in the input and output portion at the place being arranged on axis direction, but need between train and housing by the wire extended from motor-side or the wire extended from detection part side, now, wire likely contacts with the gear for train, if there is such contact, the situation that short circuit etc. is bad is then produced owing to can occur to hinder the state of affairs of rotation of gear and the coating of wire to be destroyed, therefore not preferred this mode.

Utility model content

In view of above problem, even if problem of the present utility model is to provide a kind of when to clamping train, the input and output portion of the motor and detection part that are configured in opposition side is configured in a place, the gear motor that wire and the gear for train also not easily come in contact and automatic shutter unit.

In order to solve above-mentioned problem, the feature of the gear motor involved by the utility model is, described gear motor has makes the rotation of described motor be passed to the train of output shaft relative to motor in the side of axis direction, the detection part that the angle position of described output shaft is detected in the side tying up to axis direction is taken turns relative to described, cover the housing of the surrounding of described train, from described housing externally to described motor power supplying and the input and output portion exporting the testing result of described detection part to the outside of described housing, by the wire that extends to described input and output portion between described train and described housing and from the side described detection part and described motor and the next door be present between described wire and described train.

In the utility model, configuration clamps train and is configured in motor and the detection part of opposition side, is arranged on a place by the input and output portion of motor and detection part.Therefore, the electrical connection with outside is easily carried out.Now, extend to the wire in input and output portion from detection part or motor by between train and housing, but there is next door between wire and train.Therefore, wire not easily comes in contact with the gear for train.

In the utility model, be preferably formed with the breach being positioned at the position be separated from circumference relative to described wire in described next door, when observing from axis direction, the part for the arbitrary gear in multiple gears of described train is positioned at described breach.According to described structure, even if when being provided with next door, owing to the breach in next door to be utilized as the position of configuration gear, even if therefore under the state being provided with next door, also can gear motor be restricted to minimum with the increase of the size in the direction of axis vertical take-off.

In the utility model, be preferably provided with the wire location division described wire positioned in circumference in the position that axis direction is adjacent relative to described next door.According to described structure, can restraint measure in the gear of breach and conductive contact.

In the utility model, the side of the circumference of preferred described wire location division is open state.According to described structure, the inner side of wire from the side in open state by wire location division can be made.

In the utility model, preferably described housing is provided with guide portion, described guide portion in the axial direction from described wire localization part from position to relative to axis direction intersect direction guide described wire.According to described structure, owing to suppressing wire relaxes, therefore wire not easily comes in contact with the gear for train.

In the utility model, the interval of preferred described next door and described housing is less than the outside dimension of the part except the part between described next door and described housing of described wire.According to described structure, wire is held between next door and housing.Therefore, because wire can not movement accidentally, therefore wire not easily comes in contact with the gear for train.

In the utility model, preferred described next door is arranged at support unit, described support unit between described motor and described train, supports for the arbitrary gear in multiple gears of described train and at least one in described motor in described housing.According to described structure, parts need not be added in order to arrange next door.

In the utility model, preferred described housing abuts with described support unit partly at axis direction and radial direction.According to described structure, owing to can position support unit and housing, therefore, it is possible to arrange next door relative to the position that housing is being specified.

In the utility model, described wire can be adopted to extend to the structure in described input and output portion from described detection part side.

In the utility model, described input and output portion can be adopted to be arranged on the structure of opposite side at axis direction relative to described motor.

Apply gear motor of the present utility model and can be used in automatic shutter unit etc., in automatic shutter unit, be connected with lid material at described output shaft.

Utility model effect

In the utility model, configuration clamping train is configured in motor and the detection part of opposition side, is arranged on a place to the input and output portion of motor and detection part.Therefore, be easily electrically connected with outside.Now, by between train and housing, there is next door between wire and train in the wire extending to input and output portion from detection part or motor.Therefore, wire not easily comes in contact with the gear for train.

Accompanying drawing explanation

Fig. 1 (a), Fig. 1 (b) are the key diagrams with the automatic shutter unit applying gear motor of the present utility model.

Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) are the key diagrams that the internal structure applying gear motor of the present utility model is shown.

Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) are the key diagrams being formed in the train applying gear motor of the present utility model.

Fig. 4 is the key diagram launching also schematically to illustrate the meshing relation of each gear of the train applying gear motor of the present utility model.

Fig. 5 (a), Fig. 5 (b) are the key diagrams of the supporting structure applying the fulcrum of the train of gear motor of the present utility model from unilateral observation.

Fig. 6 (a), Fig. 6 (b) observe from opposite side the key diagram applying the supporting structure of the fulcrum of the train of gear motor of the present utility model.

Fig. 7 (a), Fig. 7 (b), Fig. 7 (c), Fig. 7 (d), Fig. 7 (e), Fig. 7 (f), Fig. 7 (g), Fig. 7 (h) are the key diagrams to the part that the fulcrum of the train applying gear motor of the present utility model supports.

Fig. 8 (a), Fig. 8 (b), Fig. 8 (c), Fig. 8 (d) are the key diagrams of the output shaft applying gear motor of the present utility model.

Fig. 9 (a), Fig. 9 (b) are the key diagrams of the location structure that the support unit applying another gear motor of the present utility model is schematically shown.

(symbol description)

1 gear motor;

2 housings;

3 output shafts;

4 driving mechanisms;

10 lid materials;

21 first housing parts;

22 second housing parts;

25 outer covers;

30 axis bodies;

35 is simplified;

40 motors;

49 input and output portions;

50 trains;

51 first gears;

52 second gears;

53 the 3rd gears;

54 the 4th gears;

61 first fulcrums;

62 second fulcrums;

63 the 3rd fulcrums;

64 the 4th fulcrums;

70 secondary springs;

71, the end of 72 secondary springs;

81 first support units;

82 second support units;

83 the 3rd support units;

91 detection parts;

95 wires;

100 automatic shutter unit;

226a guide portion;

306a backoff portion;

308a, 309a backoff portion;

353 teeth;

355 drawer at movable side spring holding sections;

357 second arc sections;

357a, 357b rotate limiting unit;

358 first arc sections;

359 protuberances;

307 recesses;

814 fixation side spring holding sections;

815,816 locator protrusionss;

829 hamulus;

829a wire location division;

832 next doors;

838a breach.

Embodiment

With reference to accompanying drawing to applying gear motor of the present utility model and automatic shutter unit is described.In addition, in the following description, the pivot axis of output shaft is described as axis L.

(overall structure)

Fig. 1 (a), Fig. 1 (b) are the key diagrams with the automatic shutter unit 100 applying gear motor 1 of the present utility model, and Fig. 1 (a), Fig. 1 (b) observe the stereogram of gear motor 1 and observe the stereogram of gear motor 1 from the opposition side (the opposite side L2 in axis L direction) of the side that output shaft 3 is given prominence to from the side (the side L1 in axis L direction) that output shaft 3 is outstanding.Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) are the key diagrams that the internal structure applying gear motor 1 of the present utility model is shown, Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) be respectively from gear motor 1 unloaded the state of the first housing parts 21 and outer cover 25 exploded perspective view, have further been omitted the stereogram of the illustrated situation of the second housing parts and detection part 91 etc. and unloaded the exploded perspective view of state of secondary spring 70 further.In addition, in the gear motor 1 of present embodiment, use three wires 95, but only illustrate a wire 95 at Fig. 2 (a).

As shown in Fig. 1 (a), Fig. 1 (b), the gear motor 1 in present embodiment has overall in roughly cylindric housing 2, and the terminal part 301 of output shaft 3 is outstanding to the side L1 in axis L direction from housing 2.Two opposite tabular surfaces are formed in the side of terminal part 301.When using gear motor 1 to form automatic shutter unit 100, be connected with at the terminal part 301 of output shaft 3 the lid material 10 that chain-dotted line represents.Lid material 10 is toilet lid or the toilet seat of Western-style toilet.Further, lid material 10 also can be the lid material of washing machine.

In described automatic shutter unit 100, gear motor 1 makes output shaft 3 carry out opening and closing around axis L rotation to lid material 10.Such as, gear motor 1 makes output shaft 3 rotate to opening direction driving lid material 10 towards direction, side R1 around axis L, and makes output shaft 3 come to drive lid material 10 to closing direction towards other direction R2 rotation around axis L.In the automatic shutter unit 100 of present embodiment, lid material 10 is toilet lid or the toilet seat of Western-style toilet.Therefore, automatic shutter unit 100 is configured to make output shaft 3 be in level, and lid material 10 is by the axis drives around level.

In the gear motor 1 of present embodiment, housing 2 has to the first housing parts 21 of the side L1 opening in axis L direction with relative to second housing parts 22 of the side L1 of the first housing parts 21 in axis L direction to opposite side L2 opening.Therefore, the hole 223 making the terminal part 301 of output shaft 3 outstanding is formed at the end face of the side L1 of the second housing parts 22.In the present embodiment, by the screw (omit diagram) of flange part 220 being fixed on the second housing parts 22, the first housing parts 21 is combined with the second housing parts 22.

Below, the side L1 in axis L direction is described referred to as side L1, the opposite side L2 in axis L direction is described referred to as opposite side L2.

As shown in Fig. 1 (a), Fig. 1 (b) and Fig. 2 (a), Fig. 2 (b), Fig. 2 (c), second housing parts 22 has cylindric cylinder portion 221 and the transducer support 225 of the hollow outstanding to radial direction from cylinder portion 221, there is sensor gear 97 in the internal configurations of transducer support 225, be configured with detection part 91 and the sensor base plate 92 of the angle position detecting output shaft 3 in the side of sensor gear 97.Further, transducer support 225 is covered from side L1 by outer cover 25.Now, the hook 228 of the second housing parts 22 engages with the engaging protrusion 258 of the side being formed at outer cover 25, and outer cover 25 is fixed on the second housing parts 22.In this condition, sensor gear 97, detection part 91 and sensor base plate 92 are covered from side L1 by outer cover 25 across the guard block 27 of tabular.

The driving mechanism 4 that driver output axle 3 rotates is provided with in the inside of housing 2.Driving mechanism 4 have can positive and negative rotation motor 40 and the rotation of motor 40 is passed to the train 50 of output shaft 3, train 50 is configured to the rotation of motor 40 is slowed down and the deceleration train being delivered to output shaft 3.Further, be configured with in the inner side in the cylinder portion 221 of the second housing parts 22 secondary spring 70 be made up of torsion-coil spring around output shaft 3.An end 71 of secondary spring 70 engages with output shaft 3, and another end 72 of secondary spring 70 engages with the second housing parts 22 side.Secondary spring 70 is assembled with the state of being out of shape in order to the power of playing a role, and secondary spring 70 plays the active force of direction, the side R1 shown in Fig. 1.Described side direction R1 is the direction that lid material 10 is erected from flat position, is direction lid material 10 being rotated against gravity.Therefore, the driving of secondary spring 70 auxiliary drive mechanism 4.

Motor 40 makes motor drive shaft (omitting diagram) be configured to towards side L1 in the inner side of the first housing parts 21, relative to the position of motor 40 by side L1, be configured with train 50 in the inner side of the inner side of the first housing parts 21 and the second housing parts 22.Motor base plate 48 is configured with at the opposite side L2 of motor 40, be configured with input and output portion 49 at the opposite side of motor base plate 48, described input and output portion 49 from the outside of housing 2 by the testing result of motor base plate 48 to motor power supplying and the outside output detections parts 91 to housing 2.In the present embodiment, input and output portion 49 is made up of connector, forms the sheath portion 216 covering input and output portion 49 (connector) from opposite side L2 in the end 215 of the opposite side L2 of the first housing parts 21.In the present embodiment, input and output portion 49 is made up of connector, but also can form input and output portion 49 as wire 95 described later with to the lead division of the wire that motor 40 is powered.

(schematic construction of train 50)

Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) are the key diagrams being formed in the train 50 applying gear motor 1 of the present utility model, Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) be respectively from the side L1 in axis L direction observe train 50 etc. stereogram, to observe the exploded perspective view that unloaded the state of output shaft 3 from the side L1 in axis L direction and observe from the opposite side L2 in axis L direction the stereogram having unloaded the state of output shaft 3.Fig. 4 shows the key diagram that the meshing relation of each gear of the train 50 applying gear motor 1 of the present utility model is also schematically shown.

As shown in Fig. 2 (a), Fig. 2 (b), Fig. 2 (c), in the present embodiment, when configuring train 50, in the second housing parts 22, the first support unit 81 to train 50 is utilized as towards the part of opposite side L2.Further, when configuring train 50, being configured with the second support unit 82 at the opposite side L2 of the second housing parts 22 (the first support unit 81), being configured with the 3rd support unit 83 at the opposite side L2 of the second support unit 82.3rd support unit 83 is positioned at the inner side of the first housing parts 21, and the second support unit 82 remains between the first housing parts 21 and the second housing parts 22.Further, the 3rd support unit 83 is utilized as the fixed part of motor 40.More particularly, motor 40 is fixed by screw 409 relative to the 3rd support unit 83, and in this condition, the motor drive shaft (omitting diagram) of motor 40 is outstanding to side L1 from the 3rd support unit 83.

Further, between the first support unit 81 and the second support unit 82, between the second support unit 82 and the 3rd support unit 83 and the fulcrum of supporting gear is set between the first support unit 81 and the 3rd support unit 83.

More particularly, as shown in Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) and Fig. 4, train 50 has the first gear 51, second gear 52, the 3rd gear 53 and the 4th gear 54, first gear 51 by first fulcrum 61 (fixed axis) supporting for rotating, described first fulcrum 61 be supported at both ends in the 3rd support unit 83 and the second support unit 82.Described gear 51 has the large diameter gear 511 engaged with motor pinion 405 and the small-diameter gear 512 coaxially formed at the side L1 of large diameter gear 511.Second gear 52 is by the second fulcrum 62 (fixed axis) supporting for rotating, and the two ends of described second fulcrum 62 are supported in the 3rd support unit 83 and the second support unit 82.Described second gear 52 has the large diameter gear 521 engaged with the small-diameter gear 512 of the first gear 51 and the small-diameter gear 522 coaxially formed at the side L1 of large diameter gear 521.

3rd gear 53 by the 3rd fulcrum 63 (fixed axis) supporting for rotating, described 3rd fulcrum 63 be supported at both ends in the 3rd support unit 83 and the first support unit 81.Described 3rd gear 53 has the large diameter gear 531 engaged with the small-diameter gear 522 of the second gear 52 and the small-diameter gear 532 coaxially formed at the side L1 of large diameter gear 531.In the present embodiment, the large diameter gear 531 of the 3rd gear 53 and small-diameter gear 532 are made up of the different parts of arranged coaxial, are forming the clutch components being configured with ring-type between the parts of large diameter gear 531 and the parts forming small-diameter gear 532.Therefore, when applying larger load between large diameter gear 531 and small-diameter gear 532, the parts forming large diameter gear 531 and the parts idle running forming small-diameter gear 532.Such as, therefore, in the midway of motor 40 by train 50 driver output axle 3, even when lid material 10 grade shown in manual operation Fig. 1 applies excessive external force to output shaft 3, also do not damage train 50.

4th gear 54 by the 4th fulcrum 64 (fixed axis) supporting for rotating, described 4th fulcrum 64 be supported at both ends in the second support unit 82 and the first support unit 81.Described 4th gear 54 has the large diameter gear 541 engaged with the small-diameter gear 532 of the 3rd gear 53 and the small-diameter gear 542 coaxially formed at the side L1 of large diameter gear 541.Further, the tooth 353 of output shaft 3 engages with small-diameter gear 542.

(location structure of support unit)

When supporting gear 50 like this, need to locate the first support unit 81, second support unit 82 and the 3rd support unit 83 exactly in the direction relative to axis L-orthogonal.Therefore, in the present embodiment, in the first support unit 81, second support unit 82 and the 3rd support unit 83, the first support unit 81 or the second support unit 82 have location division, and described location division positions another two support units in the direction orthogonal relative to axis direction.In the present embodiment, the first support unit 81 has location division, and described location division positions another two support units (the second support unit 82 and the 3rd support unit 83) in the direction relative to axis L-orthogonal.

More particularly, as shown in Figure 4, be formed to outstanding two locator protrusionss 815,816 of opposite side L2 at the first support unit 81.And, be formed with locator protrusions 815,816 location hole 825,826 through respectively at the second support unit 82, be formed with the location hole 835,836 that the end of the location hole 825,826 of through second support unit 82 for locator protrusions 815,816 is chimeric at the 3rd support unit 83.

Therefore, the second support unit 82 and the 3rd support unit 83 are that benchmark is accurately positioned in the direction orthogonal with axis L direction with the first support unit 81.

(detailed construction of support unit)

Fig. 5 (a), Fig. 5 (b) observe from side L1 the key diagram applying the supporting structure of the fulcrum of the train 50 of gear motor 1 of the present utility model, and Fig. 5 (a), Fig. 5 (b) observe the exploded perspective view having unloaded the state of the 3rd support unit 83 and the exploded perspective view having unloaded the state of the second support unit 82 from the side L1 observation in axis L direction further from the side L1 in axis L direction.Fig. 6 (a), Fig. 6 (b) observe from opposite side L2 the key diagram applying the supporting structure of the fulcrum of the train 50 of gear motor 1 of the present utility model, and Fig. 6 (a), Fig. 6 (b) observe the exploded perspective view having unloaded the state of the 3rd support unit 83 and the exploded perspective view having unloaded the state of the second support unit 82 from the opposite side L2 observation in axis L direction further from the opposite side L2 in axis L direction.In addition, in Fig. 5 (a), Fig. 5 (b) and Fig. 6 (a), Fig. 6 (b), omit the diagram of gear.

Fig. 7 (a), Fig. 7 (b), Fig. 7 (c), Fig. 7 (d), Fig. 7 (e), Fig. 7 (f), Fig. 7 (g), Fig. 7 (h) are the key diagrams to the part that the fulcrum of the train 50 applying gear motor 1 of the present utility model supports.At Fig. 7 (a), Fig. 7 (b), Fig. 7 (c), Fig. 7 (d), Fig. 7 (e), Fig. 7 (f), Fig. 7 (g), in Fig. 7 (h), Fig. 7 (a), Fig. 7 (b), Fig. 7 (c), Fig. 7 (d) observes from the side L1 in axis L direction the vertical view that train 50 is supported on the appearance of the second support unit 82, the vertical view of the 3rd support unit 83 is observed from the side L1 in axis L direction, observe the vertical view of the second support unit 82 from the side L1 in axis L direction and observe the vertical view of the 3rd support unit 83 (the second housing parts 22) from the side L1 in axis L direction.At Fig. 7 (a), Fig. 7 (b), Fig. 7 (c), Fig. 7 (d), Fig. 7 (e), Fig. 7 (f), Fig. 7 (g), in Fig. 7 (h), Fig. 7 (e), Fig. 7 (f), Fig. 7 (g), Fig. 7 (h) is the upward view observing the 3rd support unit 83 from the opposite side L2 in axis L direction respectively, the upward view of the second support unit 82 is observed from the opposite side L2 in axis L direction, observe the upward view of the 3rd support unit 83 (the second housing parts 22) from the opposite side L2 in axis L direction and observe from the opposite side L2 in axis L direction the upward view that train 50 is supported on the appearance of the second support unit 82.

As shown in Fig. 5 (a), Fig. 5 (b), Fig. 6 (a), Fig. 6 (b) and Fig. 7 (a), Fig. 7 (b), Fig. 7 (c), Fig. 7 (d), Fig. 7 (e), Fig. 7 (f), Fig. 7 (g), Fig. 7 (h), 3rd support unit 83 has the base plate 831 of circular, in the outer peripheral edges of base plate 831, the position that next door 832,833,834 is separated from circumference is outstanding to side L1.In the 3rd support unit 83, between next door 832 and next door 833, become breach 838a, between next door 833 and next door 834, become breach 838b.

In next door 832,833,834, it is the protuberance 834j of the fan shape tabular outstanding to radial outside that next door 834 has in the end of side L1, when the 3rd support unit 83 is received in the first housing parts 21, the stage portion (omitting diagram) being formed at the internal perisporium 210 of the first housing parts 21 abuts protuberance 834j from opposite side L2, and the projection being formed at stage portion is chimeric with the hole 834k being formed at protuberance 834j.Thus, can position the first housing parts 21 and the 3rd support unit 83 in axis L direction.

Next door 832 and next door 833 more outstanding to side L1 than next door 834, the end face of the end face of the side L1 in next door 832 and the side L1 in next door 833 abuts with the face of the opposite side L2 of the second support unit 82.The end face of the side L1 of next door 832 is formed with the location hole 835 illustrated with reference to Fig. 4, and the end face of the side L1 of next door 833 is formed with the location hole 836 illustrated with reference to Fig. 4.In next door 832 and next door 833, the part being formed with location hole 835,836 becomes cylindrical portion 835a, the 836a outstanding to radial outside, when being received in the first housing parts 21 by the 3rd support unit 83, the internal perisporium 210 of the first housing parts 21 abuts from radial outside with cylindrical portion 835a, 836a.So, in the direction with axis L-orthogonal, the first housing parts 21 and the 3rd support unit 83 can be positioned.

In the 3rd support unit 83, be formed with the axis hole 831b of the end 62a of the axis hole 831a of the end 61a of the opposite side L2 of supporting first fulcrum 61 and the opposite side L2 of supporting the second fulcrum 62 in base plate 831.Further, in the 3rd support unit 83, the end face of the side L1 of next door 834 is formed with the axis hole 831c of the end 63a of the opposite side L2 of supporting the 3rd fulcrum 63.

The result of supporting second fulcrum 62 like this and the 3rd fulcrum 63 is, a part for the large diameter gear 521 of the second gear 52 is positioned at breach 838a when observing from axis L direction, is positioned at breach 838b when a part for the large diameter gear 511 of the first gear 51 is observed from axis L direction.Further, a part for the large diameter gear 531 of the 3rd gear 53 is more outstanding to radial outside than protuberance 834j, but does not contact with the internal perisporium 210 of the first housing parts 21.

In the second support unit 82, be formed by breakthrough part the 822, three fulcrum 63 making the breach of the through semicircle shape of the small-diameter gear 532 of the 3rd gear 53 be formed by described breakthrough part 822 at substantially rectangular main part 821.Further, the axis hole 821b of the end 62b of the axis hole 821a of the end 61b of the side L1 of supporting first fulcrum 61 and the side L1 of supporting the second fulcrum 62 is formed in the face of the opposite side L2 of main part 821.Further, the axis hole 821d of the end 64a of the opposite side L2 of supporting the 4th fulcrum 64 is formed in the face of the side L1 of main part 821.

Further, in the second support unit 82, the location hole 825,826 illustrated with reference to Fig. 4 as through hole is formed with at substantially rectangular main part 821.

In addition, be formed with in the outer rim of the second support unit 82 hamulus 829 that the bend 821s along main part 821 extends, the end of hamulus 829 bends to radially inner side.The part that described hamulus 829 and bend 821s surround is used as wire location division 829a described later.

Be formed with the axle portion 827 of to be supported by output shaft 3 as rotating in the face of the side L1 of main part 821, described axle portion 827 is outstanding to side L1 from protuberance 828, and described protuberance 828 is given prominence to from the face of the side L1 of main part 821.The breach 828a for avoiding the arc-shaped of interfering with the large diameter gear 541 of the 4th gear 54 is formed in the outer peripheral edges of protuberance 828.

In the second housing parts 22, at the axis hole 81d of the end 64b of the side L1 of the axis hole 81c and supporting the 4th fulcrum 64 that are formed with the end 61b of the side L1 of supporting the 3rd fulcrum 63 towards the part (the first support unit 81) of opposite side L2.Further, the locator protrusions 815,816 illustrated with reference to Fig. 4 is formed at the first support unit 81.

In addition, in the second housing parts 22 (the first support unit 81), the fixation side spring holding section 814 (with reference to Fig. 7 (g)) that the recess being formed with the channel-shaped engaged by the end 72 of the opposite side with the secondary spring 70 shown in Fig. 2 is formed.

In the present embodiment, as with reference to Fig. 5 (a) to Fig. 7 (h) etc. the explanation done, three support units (the first support unit 81, second support unit 82 and the 3rd support unit 83) are configured in axis L direction, to utilize between the first support unit 81 and the second support unit 82 and to configure the gear (the first gear 51, second gear 52, the 3rd gear 53 and the 4th gear 54) forming train 50 between the first support unit 81 and the 3rd support unit 83 etc.Therefore, by spur gear, the train 50 with enough speed reducing ratio can be formed, and when observing from axis L direction, the area that train 50 is occupied is narrower.Further, the first support unit 81, second support unit 82 and the 3rd support unit 83 due to the locator protrusions 815,816 (location division) being arranged at the first support unit 81 for benchmark is located, the positional precision that therefore support unit is mutual is higher.Particularly in the present embodiment, because the first support unit 81 has locator protrusions 815,816 (location division), even if therefore the 3rd fulcrum 63 is being separated between the first support unit 81 of comparatively opening and the 3rd support unit 83, also not easily run-off the straight.Therefore, because the 3rd gear 53 suitably engages with the second gear 52 and the 4th gear 54, therefore not easily there is larger noise (noise).

Further, the train 50 in present embodiment comprises axle relative to another gear at the gear of axis L direction overlap.Such as, in the present embodiment, the 4th gear 54 is overlapping in axis L direction relative to the first fulcrum 61 of the first gear 51.Therefore, when observing from axis L direction, the area that train 50 can be made to occupy narrows.

Further, the fixation side spring holding section 814 engaged with the end 72 of secondary spring 70 is provided with at the first support unit 81.Therefore, when Assembling gear motor 1, at the first support unit 81, output shaft 3 and secondary spring 70 are set, can from outlet side meshing gear in order, while assemble the second support unit 82 and the 3rd support unit 83 in order relative to the first support unit 81.

(structure of output shaft 3)

Fig. 8 (a), Fig. 8 (b), Fig. 8 (c), Fig. 8 (d) are the key diagrams of the output shaft 3 applying gear motor 1 of the present utility model, and Fig. 8 (a), Fig. 8 (b), Fig. 8 (c), Fig. 8 (d) observe the stereogram of output shaft 3 from side L1, observe the vertical view of the exploded perspective view having decomposed the appearance of output shaft 3, the stereogram observing output shaft 3 from opposite side L2 and the cylindrical shell 35 from side L1 observation output shaft 3 from side L1.

As shown in Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) and Fig. 8 (a), Fig. 8 (b), Fig. 8 (c), Fig. 8 (d), output shaft 3 becomes the equipment gear being connected to the secondary spring 70 that direction, the side R1 to direction of rotation exerts a force.In the present embodiment, output shaft 3 has tooth 353 and is formed at the cylindrical shell 35 be made of metal of outer peripheral face and is connected to the axis body 30 be formed from a resin of cylindrical shell 35.In the present embodiment, cylindrical shell 35 has the terminal part 301 of the large-diameter portion 306 configuring secondary spring 70 around and the end side (side L1) being arranged at large-diameter portion 306, is formed with all grooves 304 clamped by the rib 302 of two ring-types between large-diameter portion 306 and terminal part 301.In the present embodiment, cylindrical shell 35 is sintered components.

Further, the drawer at movable side spring holding section 355 engaged with secondary spring 70 end 71 is formed at cylindrical shell 35.In the present embodiment, drawer at movable side spring holding section 355 is formed at the connecting hole of the end face opening of at least side in axis L direction by cylindrical shell 35, side (side L1) opening at large-diameter portion 306 place at least in the direction of the axisl in cylindrical shell 35, drawer at movable side spring holding section 355 (connecting hole).In the present embodiment, drawer at movable side spring holding section 355 becomes the connecting hole at the through cylindrical shell 35 in axis L direction, at the end face of side L1 and both end faces opening of opposite side L2 in the axis L direction of cylindrical shell 35.

In the present embodiment, tooth 353 is formed at the outer peripheral face that angular range is discontented with first arc sections 358 of 360 ° in cylindrical shell 35, in cylindrical shell 35, is formed with drawer at movable side spring holding section 355 in the second arc sections 357 not forming tooth 353.

The end of at least side of the circumference of the second arc sections 357 becomes with the interference of tooth of the small-diameter gear 542 of the 4th gear 54 and limits the rotation limiting unit of the rotating range of output shaft 3, in the present embodiment, two ends of the circumference of the second arc sections 357 become rotation limiting unit 357a, 357b.At this, in cylindrical shell 35, drawer at movable side spring holding section 355, tooth 353 and rotation limiting unit 357a, 357b are overlapping in axis L direction.That is, drawer at movable side spring holding section 355, tooth 353 and rotate limiting unit 357a, the forming range in axis L direction of 357b is overlapping when observing from the direction relative to axis L-orthogonal.In the present embodiment, because drawer at movable side spring holding section 355, tooth 353 and rotation limiting unit 357a, 357b cross over the entirety in the axis L direction of cylindrical shell 35 and formed, therefore drawer at movable side spring holding section 355, tooth 353 and rotation limiting unit 357a, 357b are completely overlapping in axis L direction.Further, drawer at movable side spring holding section 355, tooth 353 and rotate limiting unit 357a, 357b the radius distance of forming range of radial direction overlapping.

Further, in the second arc sections 357, the radial thickness of the angular range of drawer at movable side spring holding section 355 is formed with than thick at the position that circumference is adjacent.Specifically, because cylindrical shell 35 is cylinders, therefore in order to prevent cylindrical shell 35 and axis body 30 from dallying, the outer peripheral face being positioned at the part inside cylindrical shell 35 in axis body 30 is formed with the recess 307 outstanding to radial direction in circumferential many places, be formed with the protuberance 359 being embedded in recess 307 at the inner peripheral surface of cylindrical shell 35, the inner circumferential being formed with the angular range of drawer at movable side spring holding section 355 is positioned at the position leaning on radially inner side than the position being held on protuberance 359 in circumference.In the present embodiment, protuberance 359 and recess 307 are formed in the mode extended along axis L direction.In addition, in axis body 30, the both sides being formed with the axis L direction in the region of recess 307 become the flange part 308,309 more outstanding to radial outside than large-diameter portion 306.

Described output shaft 3 is molding by insert and forms cylindrical shell 35.Therefore, the part outstanding from cylindrical shell 35 of axis body 30, be positioned at than the position of drawer at movable side spring holding section 355 by radially inner side in the part that axis L direction is adjacent relative to drawer at movable side spring holding section 355.More particularly, in the part with same angle position, drawer at movable side spring holding section 355 that is arranged in of axis body 30, be formed with backoff portion 308a, the 309a of linearity and smooth backoff portion 306a at flange part 308,309 and large-diameter portion 306, described backoff portion 306a, 308a, 309a are positioned at than the position of drawer at movable side spring holding section 355 by radially inner side.Therefore, during insert-molding, want the resin forming large-diameter portion 306 and flange part 308,309 not easily to flow into drawer at movable side spring holding section 355.

So, in the present embodiment, the output shaft 3 (equipment gear) being connected to secondary spring 70 has tooth 353 and is formed at the cylindrical shell 35 be made of metal of outer peripheral face and the axis body 30 be formed from a resin being connected to cylindrical shell 35, is formed with the drawer at movable side spring holding section 355 engaged with the end 71 of secondary spring 70 at the cylindrical shell 35 be made of metal.Therefore, even if Long-Time Service, because the position abutted with the end 71 of secondary spring 70 in output shaft 3 does not deform, therefore, it is possible to stable stateful connection secondary spring 70.Therefore, the active force of secondary spring 70 not easily changes.Further, because axis body 30 is formed from a resin, therefore have and can realize lightweight and reduce costs, and can the advantages such as various shapes be realized.

Further, in the present embodiment, because cylindrical shell 35 is made of metal, even if therefore drawer at movable side spring holding section 355 is connecting holes, connecting hole periphery also has enough intensity.

Further, because drawer at movable side spring holding section 355 is formed at the second arc sections 357 not being formed with tooth 353, therefore regardless of the size of tooth 353 or shape etc., the drawer at movable side spring holding section 355 that size etc. is suitable can both be set.

Further, drawer at movable side spring holding section 355, tooth 353 and to rotate limiting unit 357a, 357b overlapping and be arranged on the position of radius distance overlap in axis L direction, but be made of metal due to cylindrical shell 35, therefore tooth 353 not easily deforms.

In addition, in the second arc sections 357, the position more adjacent than circumference due to the radial thickness being formed with the angular range of drawer at movable side spring holding section 355 is thick, even if therefore drawer at movable side spring holding section 355 is connecting holes, also can guarantee enough wall thickness at connecting hole periphery.Therefore, be applicable to being waited by sintering forming cylindrical shell 35.

Further, also can using any one in multiple gear as the equipment gear being connected to secondary spring 70.But, in the present embodiment, using output shaft 3 as the equipment gear being connected to secondary spring 70.Therefore, because the rotation angle range of equipment gear is narrower, be therefore applicable to arranging secondary spring 70.

(structure of wire 95)

As shown in Fig. 2 (a), Fig. 2 (b), Fig. 2 (c) etc., in the present embodiment, be configured with train 50 relative to motor 40 at the side L1 in axis L direction, be configured with the detection part 91 of the angle position detecting output shaft 3 at the transducer support 225 of the second housing parts 22 relative to train 50 in the side in axis L direction.In the present embodiment, detection part 91 is potentiometers, and the axle 96 of the sensor gear 97 engaged with the small-diameter gear 542 of the 4th gear 54 is connected to detection part 91.Therefore, as long as pass through the angle position of detection part 91 detecting sensor gear 97, the angle position of output shaft 3 can just be detected.

In the present embodiment, the end of the opposite side L2 of axle 96 is formed on support plate (the omitting diagram) supporting of the inner side of transducer support 225 for rotating.Further, as shown in Fig. 5 (a), Fig. 5 (b), be formed with the hole 227 of sensors configured gear 97 at transducer support 225, and the surrounding in hole 227 is formed with the carrier 229 of supporting sensor substrate 92.Further, the protuberance 229a that sensor base plate 92 is located is formed at carrier 229.

At this, owing to forming the input and output portion 49 (connector) of the outside being powered and the testing result of detection part 91 outputted to housing 2 from the outside of housing 2 by substrate 48 to motor 40 at opposite side L2 relative to motor 40, therefore need to make multiple conducting wires 95 extend to input and output portion 49 from the sensor base plate 92 being equiped with detection part 91.Therefore, in the present embodiment, by between train 50 and housing 2 (the first housing parts 21) time, multiple conducting wires 95 is extended through being formed at the next door 832 of the 3rd support unit 83 and housing 2 (the first housing parts 21).Therefore, next door 832 is had between train 50 and multiple conducting wires 95.At this, the interval of next door 832 and the first housing parts 21 is less than the outside dimension of the part except the part between next door 832 and the first housing parts 21 of wire 95.Therefore, because wire 95 remains between next door 832 and the first housing parts 21, therefore wire 95 can not movement accidentally.Namely, covered by the insulating barrier of flexibility around the heart yearn of wire 95, as shown in Fig. 2 (a), after being configured with wire 95, if cover the first housing parts 21, then between next door 832 and the first housing parts 21, the insulating barrier of wire 95 deforms, and is maintained between next door 832 and housing 2.

Like this, in the present embodiment, although configure motor 40 and detection part 91 in opposition side clamping train 50, a place is arranged on to the input and output portion 49 of motor 40 and detection part 91.Therefore, easy and external electrical connections.Now, although wire 95 is by between train 50 and housing 2, owing to having next door 832 between wire 95 and train 50, therefore not easily there is wire 95 and the Gear Contact for train 50.

Further, because wire 95 remains between next door 832 and housing 2, therefore because wire 95 can not movement accidentally, therefore not easily there is wire 95 and the Gear Contact for train 50.

Further, because next door 832 is arranged on supporting motor 40 and the 3rd support unit 83 of train 50, so there is no necessity and add parts for arranging next door 832.Further, the first housing parts 21 for housing 2 is connected to the 3rd support unit 83 partly in axis L direction and radial direction.Therefore, owing to can locate, therefore, it is possible to arrange next door 832 relative to housing 2 in the position of specifying the 3rd support unit 83 and housing 2 (the first housing parts 21).

Further, in the present embodiment, relative to wire 95 in the position be separated from circumference, be formed with breach 838a between next door 832 and next door 833, when observing from axis L direction, a part for the large diameter gear 521 of the second gear 52 is positioned at breach 838a.Therefore, even if when being provided with next door 832, owing to the breach 838a in next door 832 to be utilized as the position of configuration gear, even if therefore when being provided with next door 832, also can gear motor 1 be restricted to minimum with the increase of the size in the direction of axis L-orthogonal.

Now, likely there is wire 95 to contact with the large diameter gear 521 of the second gear 52.Therefore, in the present embodiment, in the outer rim of the second support unit 82, make the wire location division 829a of wire 95 by being surrounded with bend 821s by hamulus 829, thus prevent wire 95 to move to breach 838a side.

At this, the protuberance extended by the outer rim along the second support unit 82 due to hamulus 829 is formed, and therefore the side (end side of hamulus 829) of the circumference of wire location division 829a is in open state.Therefore, after wire 95 is connected to detection part 91 side, wire 95 can from the side of the circumference of wire location division 829a (end side of hamulus 829) inner side by wire location division 829a.

Further, in the present embodiment, in housing 2, be formed from wire location division 829a to side L1 in axis L direction at the outer peripheral face in the cylinder portion 221 of the second housing parts 22 protuberance 226 outstanding to radial outside.At this, when protuberance 226 is observed from axis L direction between sensor base plate 92 and wire location division 829a, therefore, when observing from axis L direction, between sensor base plate 92 and wire location division 829a, be formed with guide portion 226a, the stage portion that described guide portion 226a produces due to protuberance 226 at the side L1 of protuberance 226 is formed.Therefore, guide portion 226a guides wire 95 to the direction crossing with axis L direction, suppresses wire 95 to relax.Therefore, because unwanted movement does not occur wire 95, therefore not easily contact with the large diameter gear 521 of the second gear 52 being positioned at breach 838a.

(other execution modes)

Fig. 9 (a), Fig. 9 (b) are the key diagrams of the location structure that the support unit applying another gear motor 1 of the present utility model is schematically shown, Fig. 9 (a), Fig. 9 (b) are the key diagram of variation 1 and the key diagram of variation 2 respectively.

In the above-described embodiment, by the locator protrusions 815,816 shared being formed at the first support unit 81, second support unit 82 and the 3rd support unit 83 are located, but as shown in Fig. 9 (a), also can be located the first support unit 81 and the second support unit 82 by the locator protrusions 815 of the first support unit 81, by the locator protrusions 816 of the first support unit 81, first support unit 81 and the 3rd support unit 83 be located.

And, in the above-described embodiment, for benchmark, the second support unit 82 and the 3rd support unit 83 are located with the first support unit 81, but also as shown in Fig. 9 (b), for benchmark, the first support unit 81 and the 3rd support unit 83 can be located with the second support unit 82.Specifically, the location hole 815e that also the locator protrusions 825e of the second support unit 82 can be embedded in the first support unit 81 locates the first support unit 81 and the second support unit 82, and the location hole 835f locator protrusions 825f of the second support unit 82 being embedded in the 3rd support unit 83 locates the second support unit 82 and the 3rd support unit 83.

In addition, in the above-described embodiment, in three support units, the first support unit 81, second support unit 82 and the 3rd support unit 83 is configured with from the side L1 in axis L direction to opposite side L2, but also when being configured with the first support unit 81, second support unit 82 and the 3rd support unit 83 from the opposite side L2 in axis L direction to side L1, above-mentioned location structure can be adopted.

Claims (12)

1. a gear motor, is characterized in that, described gear motor comprises:

Train, described train makes the rotation of described motor be passed to output shaft relative to motor in the side of axis direction;

Detection part, described detection part takes turns relative to described the angle position that described output shaft is detected in the side tying up to axis direction;

Housing, described housing covers around described train;

Input and output portion, described input and output portion carry out from described housing externally to described motor power supplying and the testing result exporting described detection part to the outside of described housing;

Wire, described wire by between described train and described housing, and extends to described input and output portion from the side described detection part and described motor; And

Next door, described next door is present between described wire and described train.

2. gear motor according to claim 1, is characterized in that,

The breach being positioned at the position be separated from circumference relative to described wire is formed in described next door,

When observing from axis direction, the part for the arbitrary gear in multiple gears of described train is positioned at described breach.

3. gear motor according to claim 2, is characterized in that,

Be provided with the wire location division described wire positioned in circumference in the position that axis direction is adjacent relative to described next door.

4. gear motor according to claim 3, is characterized in that,

The side of the circumference of described wire location division is open state.

5. gear motor according to claim 3, is characterized in that,

Described housing is provided with guide portion, described guide portion in the axial direction from described wire localization part from position to relative to axis direction intersect direction guide described wire.

6. gear motor according to claim 4, is characterized in that,

Described housing is provided with guide portion, described guide portion in the axial direction from described wire localization part from position to relative to axis direction intersect direction guide described wire.

7. gear motor according to any one of claim 1 to 5, is characterized in that,

The interval of described next door and described housing is less than the outside dimension of the part except the part between described next door and described housing of described wire.

8. gear motor according to any one of claim 1 to 5, is characterized in that,

Described next door is arranged at support unit, and described support unit between described motor and described train, supports for the arbitrary gear in multiple gears of described train and at least one in described motor in described housing.

9. gear motor according to claim 8, is characterized in that,

Described housing abuts with described support unit partly at axis direction and radial direction.

10. gear motor according to any one of claim 1 to 5, is characterized in that,

Described wire extends to described input and output portion from described detection part side.

11. gear motors according to claim 10, is characterized in that,

Described input and output portion is arranged on opposite side relative to described motor in the axial direction.

12. 1 kinds of automatic shutter unit, is characterized in that,

Described automatic shutter unit has the gear motor according to any one of claim 1 to 11,

Lid material is connected with at described output shaft.