CN103166370A - Gear motor - Google Patents

Gear motor Download PDF

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Publication number
CN103166370A
CN103166370A CN2012105411720A CN201210541172A CN103166370A CN 103166370 A CN103166370 A CN 103166370A CN 2012105411720 A CN2012105411720 A CN 2012105411720A CN 201210541172 A CN201210541172 A CN 201210541172A CN 103166370 A CN103166370 A CN 103166370A
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CN
China
Prior art keywords
housing
motor
link surface
heat
heat transfer
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Granted
Application number
CN2012105411720A
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Chinese (zh)
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CN103166370B (en
Inventor
田村光扩
竹岛丰
藤野泰充
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Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Publication of CN103166370A publication Critical patent/CN103166370A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • H02K7/1163Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/22Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/223Heat bridges
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention provides a gear motor effectively suppressing heating of a whole body of the gear motor. The gear motor (GM1) is formed by connecting a motor (M1) with a decelerator (G1), wherein a housing of the gear motor is formed by a plurality of first-fifth housings (11-15); in a first-a fourth connecting surfaces (41-44) among the first-the fifth housings, besides a first and second connecting surfaces (41, 42) of the motor housing (11-13), at least one surface of a third and the fourth connecting surface (43-44) are clamped and configured with a sealing element (Se) for sealing the third and the fourth connecting surfaces; and between the third and the fourth connecting surfaces clamped with the sealing element, at least the third connecting surface (43) most close to the motor is provided with a heat transmission element (50) (and a gasket (54)) contacting with a third and a fourth housings (13, 14) positioned on two sides of the third connecting surface, and the transmission element is formed by raw material with heat conductivity higher than that of the sealing element.

Description

Gear motor
Technical field
The present invention relates to a kind of gear motor (gear reduction unit).
Background technology
Disclose the gear motor that reductor and motor link in patent documentation 1.
The motor of this gear motor possesses the fan of cooling use.And the shell of motor or the shell of reductor consist of by linking a plurality of housings.
Patent documentation 1: TOHKEMY 2007-301950 communique
Usually in motor and reductor, being generally that motor easily generates heat and cause oil film breakage etc. when uniform temp, is generally that reductor often is in serious situation.Therefore, cooling fan is set near this motor says preferred from qualitative, and there is the motor-side of the stronger tendency of heat load to have the tendency that becomes higher temperature, the therefore in fact not generation of the heat between special concern motor and reductor or conduction.
Summary of the invention
The present invention completes by considering up hill and dale the part of not gazing at contact according to the exploitation trend of gear motor in recent years, and its problem is to begin especially in recent years by utilizing dexterously high efficiency motor and the heat generation of reductor or the heating that conduction mechanism suppresses gear motor integral body effectively popularized.
the present invention solves above-mentioned problem by being made as following structure, the gear motor that a kind of motor and reductor link, the shell of described gear motor is made of a plurality of housings, and in the link surface between this housing, sandwich the seal member of this link surface of configuration sealing at least on 1 link surface except the housing link surface each other of described motor, configure heat transfer component on the link surface of the most close described motor in sandwiching the link surface that disposes the sealing parts, described heat transfer component contacts with the described housing both sides of the both sides that are positioned at this link surface, and described heat transfer component is formed by the raw material of thermal conductivity higher than described seal member.
The high efficiency motor that the present invention is conceived to basically to begin in recent years to popularize when identical (export) still less and with respect to the reductor relative temperature easily descends on the contrary than caloric value in the past.That is the heat that, is conceived in the present invention relatively to become the reductor of higher heat is passed to motor-side and on one's own initiative through the mechanism of the housing heat radiation of motor.
But with regard to reductor, in order to ensure sealing, the link surface between housing often sandwiches the seal members such as configuration (particularly being coating) liquid fillers.If the sealing parts are arranged on the link surface between housing, because of the thermal conductivity of the seal member great disparity ground raw material lower than housing, so cause being obstructed from the heat conduction smoothly of reductor one side direction motor-side.
Therefore, link surface between middle shell of the present invention by the link surface that is provided with seal member (after, in order conveniently to be called the sealing link surface) when consisting of, with at least on the sealing link surface of the most close motor configuration heat transfer component mode consist of, wherein, described heat transfer component contacts with the housing both sides of the both sides that are positioned at the sealing link surface and is formed by the raw material of thermal conductivity higher than seal member.
Thus, even in the situation that link surface is made of the sealing link surface, also the heat of deceleration pusher side can be guided to motor-side swimmingly through heat transfer component, can effectively reduce the heat of overall gear motor.
The invention effect
According to the present invention, can effectively suppress the heating of gear motor integral body.
Description of drawings
Fig. 1 mean a related gear motor of example of embodiments of the present invention structure (along Fig. 2 to looking the I-I line) cutaway view.
Fig. 2 is the end view of said gear motor.
Fig. 3 means the local amplification view of the structure of the heat transfer component that adopts in the said gear motor.
Fig. 4 means the local amplification view of other structures of the heat transfer component that adopts in the said gear motor equally.
Fig. 5 means the local amplification view of another other structures of heat transfer component.
Fig. 6 means the cutaway view of the structure of the gear motor that an example of another execution mode is related.
In figure: GM1-gear motor, G1-reductor, M1-motor, Se-seal member, 11~15-the 1st~the 5th housing, 41~44-the 1st~the 4th link surface, 50-transfer pin of heat, 52-binder bolt, 54-packing ring.
Embodiment
Below, with reference to the accompanying drawings an example of embodiments of the present invention is elaborated.
Fig. 1 mean embodiments of the present invention an example gear motor structure (along Fig. 2 to looking the I-I line) cutaway view, Fig. 2 is the end view of this gear motor.
This gear motor GM1 is the motor that motor M1 and reductor G1 link integratedly.
In this execution mode, adopt so-called high efficiency (Ultra-High Efficiency) motor that is suitable for the IE3 specification as motor M1.
The IE3 specification is in recent years for the motor with constant speed rotation, based on IEC(International Electrotechnical Commission) 60034-2-1 is at one of level of efficiency of the computational methods of distribution in 2007.For the efficient fiducial value is formed by grade separation, regulation has a super Ultra-High Efficiency of IE4(from the highest efficient at this level of efficiency), the IE3(Ultra-High Efficiency), the IE2(high efficiency), the IE1(standard performance).
Usually, the effective ways that are used for the raising moyor are known to be had: for example, (1) is made as the motor that uses as the magnet of IPM or SPM and so on; (2) change the raw material (material) of the component parts such as magnetic core or spiral; (3) thickness of change coil spiral or method for winding (shape of groove) etc.; (4) streaming current is suppressed for less etc.
No matter use any method, from IE1 to IE2, from IE2 to IE3 ... more become high efficiency, when obtaining identical output, the tendency of the heat reduction of generation is arranged.Used as motor the standard motor that is equivalent to IE1, be generally that motor becomes " heater " so compare with reductor in the past.But high efficiency motor is because caloric value is less, so be in the situation that may be on the contrary plays a role lower than " radiator " of reductor as temperature.
Present embodiment maximally utilises this orientation trend, promotes energetically " from the reductor to the motor transferring heat " that be difficult to expect in the past.
Below, begin to describe one by one from the structure of the shell Cgm of gear motor GM1.
The shell Cgm of this gear motor GM1 is made of the 1st~the 5th housing 11~15.The 1st housing 11 consists of the end cap of motor M1.The 2nd housing 12 holds the main body of the motor M1 such as stator 20 and rotor 22.The 3rd housing 13 consists of the front shroud of motor M1, and doubles as the side cover of reductor G1.The 4th housing 14 holds the reducing gear of reductor G1.The output shaft described later 28 of the 5th housing 15 supporting reductor G1.
The the 1st~the 3rd housing 11~13 consists of the shell Cm of motor M1.And the 3rd~the 5th housing 13~15 consists of the shell Cg of reductor G1.That is, the 3rd housing 13 is the part of the shell Cm of motor M1, and is the part of the shell Cg of reductor G1.
The the 1st~the 3rd housing 11~13 links by through bolt 30.On the 2nd link surface 42 of the 1st link surface 41 of the 1st housing 11 and the 2nd housing 12, the 2nd housing 12 and the 3rd housing 13 due to the lubricant by oil sealing 97 seal speed reducer G1, and the risk that does not almost have lubricant to immerse the 2nd link surface 42 is not so arrange especially seal member.That is, in this execution mode, housing 11~13 link surface each other of motor M1 is that in the 1st link surface 41, the 2nd link surface 42, metal is in direct contact with one another, and has kept high thermal conductivity.
In addition, motor M1 is high efficiency (Ultra-High Efficiency) motor of IE3 specification, so overall dimensions is compared large a little with the standard motor of in the past IE1 specification.Its result, the thermal capacity of shell Cm correspondingly become greatly, and area of dissipation also becomes large.Therefore, except the caloric value of motor M1 itself is less, thermal diffusivity itself was also higher than in the past.This tendency as a result of plays a role in the shell Cm of motor M1 emits the present embodiment of heat of reductor G1 side wanting extremely beneficially.
On the other hand, on the 3rd link surface 43 between the 3rd housing 13 and the 4th housing 14, to sandwich the seal member Se(such as configuration (being specially coating) liquid fillers not shown in order to seal between the 3rd housing 13 and the 4th housing 14 (particularly, with the lubricant sealing of enclosing in reductor G1)).And, sandwich too configuration seal member Se on the 4th link surface 44 between the 4th housing 14 and the 5th housing 15.For convenient, will sandwich later on the 3rd link surface 43 and the 4th link surface 44 that dispose seal member Se and be called " sealing the 3rd link surface 43 " and reach " sealing the 4th link surface 44 ".
In this execution mode, seal the 3rd link surface 43 and seal the 4th link surface 44 be equivalent to " housing of motor beyond each other link surface and sandwich the link surface that disposes seal member ", wherein, sealing the 3rd link surface 43 is equivalent to the link surface of close motor " ".
As amplifying diagram in Fig. 3, in present embodiment, dispose transfer pin of heat (heat transfer component) 50 on (being coated with seal member Se's) sealing the 3rd link surface 43, described transfer pin of heat contacts (with reference to figure 2) with the 3rd housing 13 of the both sides that are positioned at sealing the 3rd link surface 43 with the 4th housing 14 both sides.Transfer pin of heat 50 is disposed in intercommunicating pore 13B, the 14B different from bolt hole 13A, 14A, the 15A of the binder bolt 52 that is used for link the 3rd~the 5th housing 13~15,15B.Particularly, avoid the 5th housing 15 the 15F of foot rib 15H and along 6 of circumferential configurations.And the outer peripheral face of transfer pin of heat 50 is whole to be contacted with the inner peripheral surface of intercommunicating pore 13B, 14B, 15B.
Transfer pin of heat 50 is formed by the raw material (for example Ferrious material) of thermal conductivity higher than seal member Se.This transfer pin of heat 50 spreads all over a plurality of link surfaces (seal the 3rd link surface 43 and seal the 4th link surface 44) and arranges, not only play a role as the heat transfer component between the 3rd housing 13 and the 4th housing 14, but also play a role as the heat transfer component between the 4th housing 14 and the 5th housing 15.
On the other hand, as amplifying diagram in Fig. 4, the 3rd~the 5th housing 13~15 links by 1 (on the whole there are 8 in reductor G1 with 45 ° of intervals: with reference to figure 2) binder bolt 52.Particularly, in the front end-grain cutting of binder bolt 52, external screw thread 52A is arranged, be provided with on the 3rd housing 13 and form female bolt hole 13A.Binder bolt 52 inserts and the part of this external screw thread 52A of this binder bolt 52 is screwed into bolt hole 13A from the bolt hole 15A side of the 5th shell 15.
In present embodiment, dispose thermal conductivity higher than the packing ring (heat transfer component) 54 of the Ferrious material system of seal member Se in the periphery of this binder bolt 52.If be conceived to seal the 3rd link surface 43, this structure can be interpreted as that the periphery at the binder bolt 52 that links the 3rd housing 13, the 4th housing 14 disposes the high packing ring of the coefficient of overall heat transmission 54.And, if be conceived to seal the 4th link surface 44, can be interpreted as that the periphery at the binder bolt 52 that links the 4th housing 14, the 5th housing 15 disposes the high packing ring of the coefficient of overall heat transmission 54.
Be formed with the 3rd housing 13 of the both sides that are positioned at sealing the 3rd link surface 43 and flange part (wide diameter portion) 54A that the 4th housing 14 is clamped in the end of packing ring 54.The outer peripheral face of packing ring 54 contacts with the bolt hole 14A of binder bolt 52, the inner peripheral surface of 15A.
In addition, on the 5th housing 15 by binder bolt 52 together be fastened with double as deep bead boatswain chair 56(with reference to figure 1, with reference to figure 2).
In the present invention not the structure to motor and reductor be particularly limited, at this, the motor M1 of this execution mode and the structure of reductor G1 are described.
The motor drive shaft 58 of motor M1 is rotated supporting freely by the seal ball bearing 62 that is installed on the 1st housing 11 and the seal ball bearing 64 that is installed on the 3rd housing 13.The deceleration pusher side of this motor drive shaft 58 exceeds the 3rd housing 13 and give prominence to extension in reductor G1, and its power shaft 66(that consists of reductor G1 doubles as the power shaft 66 of reductor G1).And the reductor opposition side of this motor 58 exceeds the 1st housing 11 and extends and be fixed with cooling fan 68 in its end to the outside of motor M1 is outstanding.Cooling fan 68 is contained in the fan case 70 that is formed with ventilating opening 70A.
On the other hand, as reductor G1, adopt the planetary reducer that possesses the oscillating internal engagement type planetary gear reducing mechanism in this execution mode.
Pass through described seal ball bearing 64 with ball bearing 72 and by two-end bearing support with motor drive shaft 58 all-in-one-piece power shafts 66.Be fixed with the eccentric body 74,75 with respect to the eccentric δ e in axle center of this power shaft 66 through key 76 on power shaft 66.Eccentric body 74,75 arranges two and each eccentric body 74,75, and to have eccentric phases of 180 degree poor.At eccentric body 74,75 periphery through roller bearing 80, roller bearing 81 and swing rotary is equipped with external gear 82,83 freely.Be engaged in internal gear 86 in external gear 82,83.
Internal gear 86 comprises: with the 4th housing 14 all-in-one-piece internal gear main body 86A, consist of the outer roller 86B of internal tooth and will be somebody's turn to do the export trade 86C that outer roller 86B is rotatably freely supported on internal gear main body 86A.The interior number of teeth of internal gear 86 (radical of outer roller 86B) is than external gear 82,83 the outer number of teeth more a little (in these execution modes for manying 1).
Be formed with interior roller hole 82A, 83A in external gear 82,83 positions from its off-centring, domestic 90 run through roller hole 82A, 83A in this.Domestic 90 are put the interior roller 92 as the promotion body that slides.Guarantee to have the gap of 2 times that is equivalent to eccentric body 74,75 offset δ e between interior roller 92 and interior roller hole 82A, 83A.Domestic 90 are pressed into and are fixed in and described output shaft 28 all-in-one-piece flange body 28A.Flange body 28A will be pressed into fixing domestic 90 with the cantilever position supporting, and through an end of described ball bearing 72 supporting power shafts 66.
Output shaft 28 is supported on the 5th housing 15 by a pair of ball bearing 94,95.Form on the 5th housing 15 and be useful on the 15F of foot that this reductor G1 is assemblied in the pedestal 96 etc. of ground or object machinery.In addition, the symbol 97 of accompanying drawing, 98 is oil sealing.
The effect of this gear motor then, is described.
If 58 rotations of the motor drive shaft of motor M1, the power shaft 66 with this motor drive shaft 58 all-in-one-piece reductor G1 rotates.If power shaft 66 rotation, eccentric body 74,75 and this power shaft 66 rotate integratedly, make external gear 82,83 swing rotaries through roller bearing 80,81.It is generation external gear 82,83 and the phenomenon that departs from successively of the position of engagement of internal gear 86 as a result.Because the number of teeth (radical of outer roller 86B) that external gear 82,83 the number of teeth are set for than internal gear 86 is only lacked 1, so external gear 82,83 departs from (rotation) phase place suitable with a tooth amount with respect to (being in stationary state) 86 of internal gears when the every rotation of power shaft 66 1 time.This rotation composition through domestic 90 and interior roller 92 be passed to flange body 28A, and be passed to the output shaft 28 with being integral of this flange body 28A.In addition, external gear 82,83 swing composition are absorbed by the gap between interior roller 92 and interior roller hole 82A, 83A.
At this, if operation gear motor GM1, motor M1 and reductor G1 can generate heat.But in present embodiment, motor M1 is due to high efficiency (Ultra-High Efficiency) motor that adopts the IE3 specification, so compare with standard motor (motor of IE1 specification) in the past, the heat that produces in motor M1 is extremely few.Therefore, produce the situation of heat wish from reductor G1 effluent to motor M1 side.In the past during the gear motor of structure, even this thing happens, also because the 4th link surface 44 between the 3rd link surface 43 between the 3rd housing 13 and the 4th housing 14 and the 4th housing 14 and the 5th housing 15 consists of (sandwich and dispose the lower seal member Se's of thermal conductivity) sealing link surface, so this heat flow is obstructed, the heat of reductor (G1) has to be in the situation that keeps higher state.
But, in present embodiment, owing to disposing transfer pin of heat 50 and packing ring 54 on sealing the 3rd link surface 43 of the most close motor M1, described transfer pin of heat and packing ring contact with the 3rd housing 13, the 4th housing 14 both sides of the both sides that are positioned at sealing the 3rd link surface 43, and formed by the raw material of thermal conductivity higher than seal member Se, so no matter have or not seal member Se, the heat of the 4th housing 14 can both flow to the 3rd housing 13(namely through this transfer pin of heat 50 and packing ring 54, the shell Cm of motor M1 swimmingly) side.
In addition, in present embodiment, owing to also disposing (identical) transfer pin of heat 50 and packing ring 54 on the 4th housing 14, the 5th housing 15 sealing the 4th link surface 44 each other, described transfer pin of heat and packing ring contact with the 4th housing 14, the 5th housing 15 both sides of the both sides that are positioned at sealing the 4th link surface 44, and formed by the raw material of thermal conductivity higher than seal member Se, so the heat transfer from the 5th housing 15 to the 4th housing 14 also can be carried out extremely swimmingly through transfer pin of heat 50 and packing ring 54.
Especially, in present embodiment, spread all over the 5th housing 15~the 3rd housing 13 and be provided with single transfer pin of heat 50, and be formed with flange part (wide diameter portion) 54A that is clamped by the 3rd housing 13 and the 4th housing 14 in the end of packing ring 54, therefore can be more swimmingly to the 3rd housing 13 side transferring heats.
In addition, the heat that passes over to the 3rd housing 13 sides (owing to not disposing seal member Se on the 1st link surface 41 between the 1st~the 3rd housing 11~13 of motor M1 side, the 2nd link surface 42, so) can be extremely like a cork to the 2nd housing 12, the 1st housing 11 side shiftings.
The shell Cm of the motor M1 of present embodiment is due to the high efficiency motor that is the IE3 specification, so caloric value itself is less and to compare size slightly large with standard motor in the past, so thermal capacity is large and area of dissipation is larger.Therefore, by cooling fan 68 by very effectively cooling, can be through the shell Cm(the 1st of motor M1~the 3rd housing 11~13) heat of emitting swimmingly reductor G1.
In addition, in gear motor GM1 shown in Figure 1, the the 3rd~the 5th housing 13~15 adopts the binder bolt 52 that will cut external screw thread 52A to be screwed into the structure of the bolt hole 13A of (cutting female) the 3rd housing 13, but replace this structure, for example also can be the connecting structure that is used in combination binder bolt 91 and nut 93 as shown in Figure 5.At this moment, owing to not cut screw thread between binder bolt 91 and the 3rd housing 13a, so can with spread all over the 3rd~the 5th housing 13a, 14,15 and a packing ring 99 running through use as heat transfer component.In addition, the outer peripheral face of packing ring 99 and the 3rd~the 5th housing 13a, 14,15 bolt hole 13aA, 14A, the inner peripheral surface of 15A contact.
So, heat transfer component is not particularly limited its shape or raw material, quantity of formation etc.For example, in above-mentioned execution mode, also assembled packing ring as heat transfer component except transfer pin of heat, but can be also only any one party.For raw material, as long as its coefficient of overall heat transmission is not limited to metal higher than the coefficient of overall heat transmission of seal member.For example, also can be when enclosing is the raw material of its after coagulation of semi-solid state.
But, in above-mentioned execution mode, adopted the reductor that only possesses one-level oscillating internal engagement type planetary gear reducing mechanism as reductor G1, but the reductor that possesses the high retarding stage of heat load as shown in Figure 6 for example also arranged in reductor.The present invention especially plays a role effectively to as shown in Figure 6 this gear motor that possesses the high reductor G2 of heat load.
Gear motor GM2 shown in Figure 6 possesses the high efficiency identical with the motor M1 of above execution mode (the IE3 specification) motor M2(=M1 is arranged).And the 1st retarding stage of reductor G2 is made of the oscillating internal engagement type planetary gear reducing mechanism identical with above execution mode.Different from above execution mode is that reductor G2 further possesses quadrature reducing gear 102 as the 2nd retarding stage.
Particularly, compare with above execution mode, the output shaft 104 of the 1st retarding stage is hollow shaft, through spline 106, connecting axle 108 is linked to this output shaft 104.Front end at connecting axle 108 is formed with bevel pinion 110.Bevel pinion 110 consists of described quadrature reducing gear 102 with bevel gear 112 engagements.Bevel gear 112 links with hollow output shaft 120 through key 114.
According to this structure, do not have in above execution mode and be applied with the thrust load that the engagement by quadrature reducing gear 102 produces on the output shaft 104 of the 1st retarding stage of special applied thrust load.For this reason, the ball bearing 94,95 of above execution mode is changed into a pair of tapered roller bearing 122,124.
And, the 5th housing 115 is also changed into the shape of the flange portion 115A with large footpath in order to be connected with the 6th housing 116 that holds quadrature reducing gear 102, so itself there are recess 115B in diameter d 2, d3(the 5th housing 115 that the diameter d 1 of the axial central portion of the 5th housing 115 becomes less than the direction of principal axis both ends).
Rotation when the reductor G2 shown in Figure 6 that becomes this structure bears radial load and thrust load both sides due to tapered roller bearing 122,124 rolling element 122A, 124A with the line way of contact is so (although allowing that torque becomes large) has heating to become large tendency.Especially, from Fig. 6 also as can be known tapered roller bearing 122 due near the recess 115B that is positioned at the 5th housing 115, so heat is easily accumulated and heat load uprises more.
But in this execution mode, the heat of the 5th housing 115 is identical with above execution mode, passes to the lower motor M2(=M1 of temperature through transfer pin of heat 50 and packing ring 54) shell Cm side.Therefore, can with from omitting diagram in cooling fan 68(Fig. 6) cooling air effectively emit from the shell Cm of motor M2 with matching.
But in this execution mode, the 5th housing 115 and the 6th housing 116 have been guaranteed sealing by O type ring 126.Therefore, in this embodiment, the 5th link surface 145 between the 5th housing 115 and the 6th housing 116 is not provided with seal member.And the 6th link surface 146 between near the 7th housing 117 of the 6th housing 116 and (hollow output shaft 120 of inaccessible the 6th housing 116) also guarantees that by O type ring 130 sealing is arranged.Therefore, in this execution mode, be not provided with seal member on the 6th link surface 146 between the 6th housing 116 and the 7th housing 117 yet.Therefore, higher thermal conductivity has been guaranteed in as a result of metal directly contact basically each other on the 5th link surface 145 between the 5th~the 7th housing 115~117, the 6th link surface 146.
This is because of in the related reductor G2 of the execution mode of Fig. 6, the 6th housing 116, the 7th housing 117 are because the rotating speed of the quadrature reducing gear 102 that holds is also lower, heat load does not have that the 5th housing 115 is so excessive and its size is larger, therefore the larger heat radiation of thermal capacity is also carried out more well, so in the time of can imagining running, temperature is lower than the 5th housing 115 on the contrary.
That is, in this execution mode, the excessive heat of the 5th housing 115 flows to motor M2 side through the 4th housing 14, the 3rd housing 13, and the 6th housing 116, the 7th housing 117 sides of the flow direction and the 5th housing 115 Metal Contact, dispels the heat thus.
So, the unnecessary sealing link surface that all link surfaces of each housing must be made as (sandwich and dispose seal member) in the present invention.Especially, about the shell of motor, due to guarantee sealing require little, so in order to guarantee that than the highland conductivity of heat in the link surface between each housing also is preferably the non-tight link surface (wherein, about the link surface of motor-side, for example also can configure seal member and configuration heat transfer component).And, in reductor, the example as shown in the execution mode of Fig. 6 for example about whether the link surface of each housing should being made as the sealing link surface, is determined also can from the simplification of cost, assembling, sealing difficulty (tightness), the heat generation of reducing gear, the aspects such as simplification of heat radiation.
In a word, consider that from this various viewpoints the present invention is when link surface is set as the sealing link surface that is provided with seal member, from can and housing in the both sides of sealing link surface between carry out well on the viewpoint of heat conduction, especially, useful on the viewpoint that can carry out well from reductor to motor-side heat conduction that in the past was difficult to expect.In order to guarantee reliably this effect, in the present invention the face of being tightly connected have (in order to ensure the heat transfer from reductor to motor-side or as described later in order to ensure the heat transfer from motor-side to the deceleration pusher side) when a plurality of must be relatively wherein by sealing link surface configuration heat transfer component of motor-side.Yet, not necessarily to configure heat transfer component to other sealing link surfaces.But in order to carry out more well the heat transfer of gear motor integral body, the example of preferred 2 execution modes described above all configures heat transfer component at all sealing link surfaces.
In addition, the present invention is the invention that the temperature of motor-side is completed lower than this phenomenon of reductor on the contrary when being conceived to adopt high efficiency motor, (but even adopt high efficiency motor) also makes the temperature of motor-side might become higher because of the structure of reductor or the heat dissipation environment of holding gears motor.At this moment, in the present invention, heat is from motor-side to the reductor side shifting on its structure.But, even this phenomenon occurs, as a result of move energetically heat between the motor of gear motor and reductor and the temperature of gear motor integral body can be reduced to both medium temperatures, be never preferably not act on this viewpoint, the situation that can think on the contrary to become beneficial effect is many.
Namely, in the present invention, arranging when the deceleration pusher side has unnecessary heat load on the structure of place or reducing gear and do not forbidding for example making the heat that produces in this standard motor flow to the uniform heat distribution that the deceleration pusher side is realized gear motor integral body on the basis by the Application standard motor.Therefore, the present invention only could set up when the structure of motor temperature step-down, and on this viewpoint, this is not necessary condition of the present invention must to use high efficiency motor.
The application advocates the priority based on No. the 2011-272779th, the Japanese patent application of on December 13rd, 2011 application.The full content of its application is applied in this specification by reference.

Claims (6)

1. gear motor, its motor and reductor link, it is characterized in that,
The shell of described gear motor is made of a plurality of housings, and
In link surface between this housing, sandwich at least 1 link surface except the housing link surface each other of described motor and dispose the seal member that this link surface is sealed,
Configure heat transfer component on the link surface of the most close described motor in sandwiching the link surface that disposes the sealing parts, described heat transfer component contacts with the described housing both sides of the both sides that are positioned at this link surface, and described heat transfer component is formed by the raw material of thermal conductivity higher than described seal member.
2. gear motor as claimed in claim 1, is characterized in that,
Sandwiching the link surface that disposes described seal member has a plurality ofly, and sandwiches at all and all disposes described heat transfer component on the link surface that disposes the sealing parts.
3. gear motor as claimed in claim 1 or 2, is characterized in that,
Described heat transfer component is disposed at the binder bolt that links described housing and uses in the intercommunicating pore of hole split setting.
4. gear motor as described in any one in claim 1~3, is characterized in that,
Described heat transfer component is disposed at the periphery of the binder bolt that links described housing.
5. gear motor as claimed in claim 4, is characterized in that,
Be provided with the wide diameter portion that the described housing of the both sides that are positioned at described link surface is clamped in the end of described heat transfer component.
6. gear motor as described in any one in claim 1~5, is characterized in that,
Described link surface has a plurality of, spreads all over these a plurality of link surfaces and is provided with single described heat transfer component.
CN201210541172.0A 2011-12-13 2012-12-13 Gear motor Active CN103166370B (en)

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JP5844629B2 (en) 2016-01-20
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CN103166370B (en) 2015-06-03
DE102012024227A1 (en) 2013-06-13

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