CN205572617U - Electric motor workover rig - Google Patents
Electric motor workover rig Download PDFInfo
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- CN205572617U CN205572617U CN201521002421.4U CN201521002421U CN205572617U CN 205572617 U CN205572617 U CN 205572617U CN 201521002421 U CN201521002421 U CN 201521002421U CN 205572617 U CN205572617 U CN 205572617U
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Abstract
The utility model provides an electric motor workover rig. This electric motor workover rig includes: the motor, the fan, install in the rotor, and fan guide portion, along the rotation axis direction of rotor and being provided with the ventilation opening that the rotor runs through. Through the internal diameter that enlarges ventilation opening (41D) in upper and lower direction to at the position that is provided with stator coil (31A, 31B), the cooling air becomes easy and flows. The velocity of flow through making this part descends, can make the noise that produces in this part descend, and can not make stator coil's (31A, 31B) cooling efficiency descend. The flow locality ground grow of the cooling air between flowing through about the ventilation opening (41D) that is enlarged of mouth mouthful is correspondingly diminished by the flow of the cooling air about the ventilation opening (41D) of constriction between consequently flowing through, the result, and the noise of production also diminishes about ventilation opening (41D).
Description
Technical field
This utility model relates to a kind of using motor (motor) as the electro-motor working rig of power source, the structure of such as chain saw (chain saw).
Background technology
For cutting off in the chain saw of trees etc., the saw chain (saw chain) being erected at the circumference of the guiding bar (guide bar) extended forward from body is driven by electromotor (engine) or the motor as power source.Wherein, when using motor to be used as power source, it is possible to increase the quietness of operation, and chain saw can be made to become light weight.The composition of this kind of chain saw such as has described in patent documentation 1.
In this chain saw, motor is housed in the inside of chain saw body, and described chain saw body is to be covered by resinous casing (housing) (cover (cover)) and constituted.In the front of chain saw body, be provided with the guiding bar extended forward, motor the saw chain driven is along the circumference walking at a high speed of this guiding bar.Guide bar can be adjusted relative to the installation site on direction before and after chain saw body.On the other hand, rear side, front side at chain saw body, it is respectively arranged with rear handle (rear handle), the front handlebar (front handle) gripped by operator, on rear handle, it is provided with for the supply lines (cord) externally to this chain saw supply electric power.
Herein, as described in patent documentation 1, chain saw body or the casing outside it are that multiple resinous parts (cover) are combined and are constituted.These covers are configured to suitably fixing motor, and make the position adjustment of guiding bar or handling become easy.
And, although caloric value is less than electromotor, but owing to there being big electric current to flow through motor in the running, therefore motor remains in the running and can generate heat.Therefore, being provided with cooling fan (fan) in the rotary shaft of motor, the cooling airflow thus generated is through chain saw body interior, and this cooling wind, after cooling down motor, is discarded to the outside of chain saw body.Casing is to be constituted in the way of making this cooling wind flow swimmingly.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2013-146900 publication
[utility model problem to be solved]
Herein, although the chain saw quietness of use motor is higher than the chain saw using electromotor, but noise can actually still be produced when operation.Its main cause is the cooling wind of cooling motor.If it is clear that make the air quantity of this cooling wind decline, then noise can decline, but the cooling effectiveness of motor can decline, therefore, it is difficult to make the air quantity of cooling wind decline.Now, in small-sized chain saw, the flow path of cooling wind is restricted, and therefore especially can produce big noise at the position that stream narrows.
Therefore, it is desirable to a kind of small-sized and that quietness is high electro-motor working rig.
Utility model content
This utility model is to complete in view of described problem, its object is to provide a kind of utility model solving described problem.
[solving the technological means of problem]
This utility model have employed composition shown below to solve described problem.
Electro-motor working rig of the present utility model includes: motor, possesses rotor (rotor) and the stator (stator) of rotation, and the described stator described peritrochanteric on the surfaces of revolution of described rotor is equipped with flux-producing portion part；Fan, is installed on described rotor, generates cooling wind with the rotation of described rotor；And fan guide portion, the rotary shaft direction of described rotor is provided with the ventilation orifice portion that described rotor runs through, and there is the separating part between described flux-producing portion part and the described fan being configured on described rotary shaft direction, described ventilation orifice portion is set to the shape being provided with minor axis direction with major diameter direction, described minor axis direction is the direction that the internal diameter by described rotary shaft on the described surfaces of revolution in described ventilation orifice portion is short, and described major diameter direction is the direction of described interior path length.
In electro-motor working rig of the present utility model, described flux-producing portion part is to arrange along described major diameter direction.
In electro-motor working rig of the present utility model, the side being provided with described fan of the described separating part in described fan guide portion, it is provided with cooling wind guide portion, described cooling wind guide portion covers the region beyond a region of described fan periphery.
Electro-motor working rig of the present utility model includes: casing, covers described fan and described fan guide portion, and is provided with the air vent that described cooling wind is expelled to outside, and when the described axle of described rotor is observed, described air vent is arranged in a described region.
In electro-motor working rig of the present utility model, described fan guide portion is fixed on described casing by making fixture run through fixed part, and described fixed part is disposed along outside the two of the described ventilation orifice portion in described minor axis direction respectively.
In electro-motor working rig of the present utility model, described fan guide portion is fixed on described casing via the motor chassis housing described motor.
In electro-motor working rig of the present utility model, described motor the operation component driven is arranged on the wherein side on the described minor axis direction of described casing, when described rotary shaft is observed, a described region be arranged on described in wherein side.
In electro-motor working rig of the present utility model, a described region be from use described electro-motor working rig time vertical described rotor lower section until described wherein side and arrange, described rotor by from described underneath towards described wherein side in the way of and rotate.
In electro-motor working rig of the present utility model, described operation component is by driving gear to be driven, and described driving gear is to be that described rotor is fixed in opposition side with described flux-producing portion part when described fan is observed on described rotary shaft direction.
In electro-motor working rig of the present utility model, described operation component is saw chain, and described saw chain is along the circumference walking guiding bar extended towards described wherein side from described casing.
Electro-motor working rig of the present utility model includes: motor, possess rotor and stator, described rotor rotates around the axle along the 1st direction, and described stator is equipped with two flux-producing portion parts clipping described rotor along the both sides in the 2nd direction vertical with described 1st direction；Fan, is installed on described rotor, generates cooling wind with the rotation of described rotor；And fan guide portion, described 1st direction is provided with the ventilation orifice portion that described rotor runs through, and there is the separating part between described flux-producing portion part and the described fan being configured on described 1st direction, the internal diameter along described 2nd direction in described ventilation orifice portion is bigger than the internal diameter in the described ventilation orifice portion along 3rd direction vertical with described 1st direction and described 2nd direction.
(effect of utility model)
This utility model is constituted in the above described manner, therefore, it is possible to obtain small-sized and that quietness is high electro-motor working rig.
Accompanying drawing explanation
Fig. 1 (a), Fig. 1 (b), Fig. 1 (c) are the axonometric chart (Fig. 1 (a)) of the chain saw as embodiment of the present utility model, top view (Fig. 1 (b)), upward view (Fig. 1 (c)).
Fig. 2 is in the chain saw as embodiment of the present utility model, and motor is installed on assembling stereogram during casing.
Fig. 3 is the stator in the chain saw as embodiment of the present utility model, rotor, the assembling stereogram of fan guide portion.
Fig. 4 is the profile of vertical of axle near the fan guide portion in the chain saw as embodiment of the present utility model, along rotor.
Fig. 5 is the profile that the axle with rotor at the position comprising fan in the chain saw as embodiment of the present utility model is vertical.
Fig. 6 (a), Fig. 6 (b) are the side views of the composition being denoted as the fan guide portion (Fig. 6 (a)) of reference example, fan guide portion (Fig. 6 (b)) used in the chain saw as embodiment of the present utility model.
[explanation of symbol]
1: chain saw (electro-motor working rig)
10: chain saw body (casing)
10A, 10B: casing
11: rear handle
11A: switch
12: front handlebar
13: handguard
14: tension force driver plate
20: guide bar
30: motor
31: stator
31A, 31B: stator coil (flux-producing portion part)
31C, 41F: fix and use screw through hole
32: rotor
32A: motor drive shaft
32B: rotor coil portion
32C: fan
32C1: fan blade
40: motor chassis
41,141: fan guide portion
41A: stator fitting portion
41B: fan leader dividing plate (separating part)
41C: cooling wind guide portion
41C1: cooling wind guide portion extension
41D, 141D: ventilation orifice portion
41E: boss portion (fixed part)
42: motor cover
100: supply lines
110: fixing screw (fixture)
120: air vent
X: rotary shaft
Detailed description of the invention
The composition of the chain saw (electro-motor working rig) as embodiment of the present utility model is illustrated.Fig. 1 (a), Fig. 1 (b), Fig. 1 (c) are the axonometric chart (Fig. 1 (a)) of the composition representing this chain saw (electro-motor working rig) 1, top view (Fig. 1 (b)), upward view (Fig. 1 (c)).In this chain saw 1, in the front of chain saw body 10, being provided with the guiding bar 20 extended towards front (wherein side), setting up at the circumference guiding bar 20 has saw chain (operation component: not shown).At the rear of chain saw body 10, with chain saw body 10, rear handle 11 is integrally installed, on the upside of front, with chain saw body 10, front handlebar 12 is integrally installed.And, in the more front of front handlebar 12, the handguard (hand guard) 13 erectting shape is installed.From the rear of rear handle 11, lead to the supply lines 100 for this chain saw 1 being supplied from outside commercial ac power source.In the downside of the upper portion of rear handle 11, the switch 11A for making action start is installed.And, the root being provided with the part guiding bar 20 in chain saw body 10, being provided with tension force driver plate (tension dial) 14, this tension force driver plate 14 relative to the fixing of chain saw body 10 and guides bar 20 position adjustment in the longitudinal direction for guiding bar 20.By rotating tension driver plate 14, it is possible to adjust saw chain relative to the tension force guiding bar 20.
Chain saw body 10 is in structure casing 10B of casing 10A in left side, right side combined, and arranges the parts such as motor and constitutes.Especially, motor etc. is assembled in casing 10A in left side, and subsequently, casing 10B on right side is installed in casing 10A.Assembling stereogram when Fig. 2 is that casing 10A is installed motor.Motor 30 used herein is to utilize the commercial ac power source supplied by supply lines 100 to drive, and possesses the stator 31 being fixed in casing 10A side, the rotor 32 rotated relative to stator 31.The rotary shaft (axle) of rotor 32 is along the left and right directions (the 1st direction) shown in Fig. 1.
As in figure 2 it is shown, first, casing 10A is installed motor chassis 40, and stator 31, the fan guide portion 41 right side from Fig. 1 are fixed relative to motor chassis 40.This is fixing is that position uses fixing screw (fixture) 110 to carry out at two front and back.Fan guide portion 41 possesses the stator fitting portion 41A being embedded in stator 31 when the axle of rotor 32 is observed from outside to the left.Rotor 32 is installed relative to them in the way of running through fan guide portion 41 in the lateral direction.And then, motor cover 42 is installed from right side in this case, the left part of rotor 32 is rotatably supported by motor chassis 40, and its right part is rotatably supported by motor cover 42.The right-hand end of rotor 32 becomes from the motor cover 42 motor drive shaft 32A prominent towards right side, is fixed on the driving gear (not shown) of this motor drive shaft 32A via reducing gear to drive saw chain (operation component).
In rotor 32, the rotor coil portion 32B being provided with coil (coil) (rotor coil) is set near central authorities in the lateral direction, for rotor coil, supply electric current via the commutator (commutator) being arranged on rotor 32 left part.Commutator contacts with the brush (brush) (not shown) being fixed on motor chassis 40, from brush, commutator is supplied electric current.Upper and lower (position at the two of vertical (the 2nd direction)) at stator 31, in the way of clipping rotor coil portion 32B on the surfaces of revolution of rotor 32 (face vertical with the rotary shaft of rotor 32), and it is respectively fixed with and produces for making rotor 32 rotate stator coil (flux-producing portion part) 31A, 31B of the magnetic flux driven.By this composition, by brush is powered with stator coil 31A, 31B such that it is able to make rotor 32 carry out rotating driving around the axle along left and right directions (the 1st direction).
Fig. 3 is the stator 31 form observing Fig. 2 from opposite direction, fan guide portion 41, the assembling stereogram of rotor 32.And, when Fig. 4 is assembling motor chassis 40, stator 31, fan guide portion 41, motor cover 42, the profile that comprises the vertical of the axle of rotor 32, explanations are omitted here the record of rotor 32.As it is shown on figure 3, on rotor 32, on rotor coil portion 32B more right side (motor drive shaft 32A side), be provided with fan 32C.In fan 32C, face to the left is radially provided with multiple fan blade 32C1.Therefore, fan 32C is as the centrifugal fan function sent towards centrifugal direction (direction, footpath) from central shaft side by cooling wind by rotation.It addition, rotor 32 is when action, rotate counterclockwise when observing from right side.
As in figure 2 it is shown, in fan guide portion 41, be provided with fan leader dividing plate (separating part) 41B of the tabular vertical with the direction of principal axis of rotor 32 (the 1st direction), it is provided with described stator fitting portion 41A to the left.On the right side of fan leader dividing plate 41B, possess when being provided with rotor 32 from cooling wind guide portion 41C of outer side covers fan 32C.By being combined with cooling wind guide portion 41C by fan leader dividing plate 41B, thus the cooling wind generated by fan 32C is after cooling down this motor 30, flows swimmingly, in casing 10 till being discarded to outside.
Do not record rotor 32 in the diagram, but rotor coil portion 32B be with the left side at fan leader dividing plate 41B, the mode clipped by stator coil 31A, 31B in the vertical direction and arrange.And, fan 32C is positioned at the right side of fan leader dividing plate 41B.In order to make cooling airflow to stator 31 side in this case, on fan leader dividing plate 41B, it is provided with the ventilation orifice portion 41D running through this fan leader dividing plate 41B on left and right directions (the 1st direction).The internal diameter of ventilation orifice portion 41D is to set in the way of at least rotor coil portion 32B can run through ventilation orifice portion 41D, therefore, it is possible to as Fig. 2, carry out assemble rotor 32 etc. as shown in Figure 3.
Now, as shown in Figure 3, ventilation orifice portion 41D on fan leader dividing plate 41B along position at the two of fore-and-aft direction (the 3rd direction), it is provided with boss (boss) portion (fixed part) 41E being set to abundant thickness in the lateral direction, in each boss portion 41E, it is formed for the fixing fixing screw through hole 41F run through in left-right direction with screw 110.Correspondingly, on stator 31, it is being also equipped with fixing screw through hole 31C with fixing with the position that screw through hole 41F is corresponding.Therefore, it is possible to make fixing screw 110 run through fixing screw through hole 41F, fixing screw through hole 31C from right side, and stator 31, fan guide portion 41 are fixed on casing 10A in the lump with motor chassis 40.And then, it is possible to rotor 32, motor cover 42 are installed on this structure.
When action, when fan 32C rotates, in the leftward space of fan leader dividing plate 41, cooling wind flows from left to right.Thus, the friction portion easily becoming the stator coil 31A of high temperature, 31B, rotor coil portion 32B or rotor 32 is cooled.Subsequently, cooling wind flows to the right side of fan leader dividing plate 41 by ventilation orifice portion 41D, by the fan 32C as centrifugal fan, flows towards outside when rotary shaft is observed.Owing to being provided with cooling wind guide portion 41C outside it, therefore cooling wind is cooling down the inner face direction of rotation flowing along fan 32C of wind guide portion 41.
Fig. 5 is the perspective view observing the composition near the fan 32C of this chain saw 1 from right side.In Figure 5, fan 32C (rotor 32) rotates counterclockwise, therefore in the space on fan leader dividing plate 41B (ventilation orifice portion 41D) more right side, cooling wind flows in the counterclockwise direction in the inside covered by cooling wind guide portion 41C.
Herein, in described composition, the flowing of cooling wind is throttled when flowing through ventilation orifice portion 41D towards right side, improves at flow velocity herein, therefore when cooling down wind and passing through ventilation orifice portion 41D towards right direction flowing, can produce noise.Especially, when improving the flow velocity cooling down wind to improve the cooling effectiveness of stator coil 31A, 31B, rotor coil portion 32B etc. to improve flow, its noise can become big, therefore improves cooling effectiveness and the relation reducing noise existence balance (trade off).In described chain saw 1, cooling effectiveness is maintained higher on the basis of, set ventilation orifice portion 41D so that noise diminishes.Hereinafter, this point is illustrated.
Fig. 6 (a), Fig. 6 (b) represent fan guide portion 141 (Fig. 6 (a)), the side view of described fan guide portion 41 (Fig. 6 (b)) observed respectively as a reference example from right side.In fan guide portion 141 as a reference example, the shape in ventilation orifice portion is different, and composition in addition is as described fan guide portion 41, herein, ventilation orifice portion 141D set on fan leader dividing plate 41B is set to simple toroidal, and rotary shaft X is at its center.In this composition, if the impact of the works without being cooled, then cooling wind equally will flow in the inside of ventilation orifice portion 141D, but actually, there is stator coil 31A, 31B up and down at rotor 32, up and down, stator coil 31A, 31B are cooled and stop wind path.Therefore, it practice, the flow towards the cooling wind on right side is diminishing up and down, become big front and back.Therefore, the cooling flowing of wind is the most different, and can produce the position that flow velocity becomes big locally, at this position, because the inner face of ventilation orifice portion 141D contacts with cooling down wind, thus can produce king-sized noise.
Especially chain saw is set to small-sized in the case of, cooling wind stream be restricted, the aperture area of ventilation orifice portion 141D is restricted.Especially in the case of using the structure that fan guide portion 141 or stator 31 are fixed on casing 10, it is necessary in the outside fan attachment guide portion 141 of ventilation orifice portion 141D, therefore the aperture area of ventilation orifice portion 141D is restricted, thus noise becomes notable.
On the other hand, in described fan guide portion 41, it is set to be equal to described fan guide portion 141 (ventilation orifice portion 141D) by the internal diameter L along fore-and-aft direction (the 3rd direction) of ventilation orifice portion 41D, and makes the internal diameter M along above-below direction (the 2nd direction) big than change.Herein, respectively on fore-and-aft direction (minor axis direction), above-below direction (major diameter direction), from rotary shaft X observe this ventilation orifice portion 41D be shaped as symmetry.Therefore, upper and lower, more than described ventilation orifice portion 141D at ventilation orifice portion 41D.That is, ventilation orifice portion 41D be set to fore-and-aft direction be minor axis direction, above-below direction be the shape in major diameter direction.
Therefore, despite the presence of stator coil 31A, 31B, but the aperture area of ventilation orifice portion 41D is substantially greater than described ventilation orifice portion 141D, thus cooling wind on the whole easily by ventilation orifice portion 41D towards right side flow.Therefore, the flow velocity with the cooling wind of the inner faces contact of ventilation orifice portion 41D declines compared with the situation by ventilation orifice portion 141D on the whole.Especially, be difficult to flow in the case of ventilation orifice portion 141D is upper and lower, and cooling wind becomes easily to flow, and is therefore set to the ventilation orifice portion 41D of asymmetrical shape by use, cools down as the flowing of wind becomes.Therefore, even if in the case of the aperture area of ventilation orifice portion 41D is restricted, it is also difficult to produce the position that the flow velocity of cooling wind uprises locally, thus noise declines.
Now, owing to being provided with the upper and lower of stator coil 31A, 31B, cooling wind becomes easily to flow, and therefore the cooling effectiveness of stator coil 31A, 31B also improves.Equally, the cooling effectiveness of the rotor coil portion 32B of rotation also improves.
I.e., ventilation orifice portion 41D is set to the shape of lengthwise as above, thus become locally easily to flow at the cooling wind that makes up and down of the ventilation orifice portion 41D being provided with stator coil 31A, 31B, thus, cooling wind is declined by noise during ventilation orifice portion 41D, and can maintain higher by the cooling effectiveness in motor 30.
Herein, as it is shown in figure 5, when the rotary shaft of rotor 32 is observed, cool down wind guide portion 41C region overlay fan 32C beyond region (region) R of fan 32C periphery, and do not cover fan 32C in the R of region.And, cooling wind guide portion 41C possesses cooling wind guide portion extension 41C1, this cooling wind guide portion extension 41C1 and extends towards front in the downstream i.e. front that fan 32C rotates.And, as shown in Fig. 1 (c), Fig. 5, from the downside of casing 10B until front, region R is provided with multiple air vent 120.Therefore, after cooling wind flows in the counterclockwise direction at the inner face along cooling wind guide portion 41C, discharge towards downside diagonally forward from air vent 120.
Herein, in order to improve the cooling effectiveness of stator coil 31A, 31B, the cooling wind preferably cooled down stator coil 31A, 31B is quickly discharged from air vent 120.On the other hand, region R (air vent 120) can only be arranged on the specific part in casing 10A or the specific direction when the rotary shaft of rotor 32 is observed, therefore until stator coil 31A, 31B have carried out cooling, to cool down the length of wind wind path length till air vent 120 is discharged different, according to the composition that one is shorter, then another one is by elongated.Therefore, in order to improve the cooling effectiveness of motor 30 (stator 31), it is necessary to the wind path length of elongated side is shortened.
In Figure 5, having carried out discharging from air vent 120 immediately in the region R near being arranged at downside and being present in of the cooling wind after cooling down to the stator coil 31B of downside, therefore this wind path length becomes extremely short.On the other hand, the cooling wind after the stator coil 31A to upside has carried out cooling is discharged from air vent 120 in Figure 5 after the inner face the most about half cycle of cooling wind guide portion 41C equally in the R of region.Now, after cooling, the wind path length cooling down wind till discharging is compared with the stator coil 31A that elder is upside, and this wind path length is in Figure 5 for constituting below the half cycle of the circle of the inner face of cooling wind guide portion 41C.On the other hand, assume that the region R making to be provided with air vent 120 is when the rotary shaft half-twist of rotor 32, i.e., from front until top or from rear until lower section is provided with region R time, then in stator coil 31A, 31B, the elongated side of wind path length of cooling wind till discharging after cooling, this wind path length is more longer than the half cycle of described circle.In the composition of Fig. 5, by region R being set in downside (from below to front side) such that it is able to the greatest length of this wind path length is set to below the half cycle of this circle.Thereby, it is possible to improve the cooling effectiveness of stator coil 31A, 31B simultaneously.That is, favored area R, air vent 120 is disposed along the side of long side direction of ventilation orifice portion 41D.
And, now, the region covered by cooling wind guide portion 41C beyond the R of region, cooling wind is not discharged.Especially, in the front of cooling wind guide portion 41C, being provided with the cooling wind guide portion extension 41C1 extended towards front (wherein side), the most in Figure 5, although fan 32C rotates counterclockwise, but cooling wind is suppressed towards the discharge of upside.Therefore, cooling wind is from below until discharging in the narrow range in front.
In the composition of Fig. 1, generally, when handle 11 and front handlebar 12 after gripping from upside, operator is positioned at the rear guiding bar 20 (saw chain).Therefore, if upward or rear discharge cooling wind in the case of, then the cooling wind after cooling down motor 30 blows to operator sometimes, and now, operator will be difficult to cosily carry out operation.
On the other hand, in described chain saw 1, as it is shown in figure 5, cooling wind is discharged towards front the most from below, therefore operator can cosily carry out operation.And, cooling wind is made to discharge the most forward as such on the basis of cool down motor 30 with high cooling efficiency, use described composition preferably as described above, i.e., the long side direction of ventilation orifice portion 41D is set to above-below direction, and correspondingly stator coil 31A, 31B are separately positioned on the upper and lower of ventilation orifice portion 41D.
And, in the case of ventilation orifice portion 41D is set to this kind of shape, in the both sides of the short side direction of ventilation orifice portion 41D, boss portion 41E (fixing screw through hole 41F) is set, use this boss portion 41E, as shown in Figure 2, it is possible to motor 30 is fixed on casing 10A.Therefore, it is possible on the basis of by device integral miniaturization, fan guide portion 41 grade is positively fixed on casing 10.
It addition, in described chain saw 1, ventilation orifice portion 41D is set to shown in Fig. 6 (b), the circular left and right sides shape with the cut lengthwise of rectilinear form.But, as long as it is clear that the A/F on above-below direction is wider and A/F on left and right directions is than narrower shape, just can play same effect.Such as, it is possible to ventilation orifice portion is set to ellipse, corner through the rectangular shape of Curve Machining.And, it is clear that, rotary shaft X is not necessarily required to identical with the minor axis direction of ventilation orifice portion 41D (direction that internal diameter is shorter), major diameter direction (direction that internal diameter is longer) respective point of symmetry, as long as the position being configured to substantially close with it exists rotary shaft X, same effect just can be played.
And, in described ventilation orifice portion 41D, fore-and-aft direction is set to its minor axis direction (direction that internal diameter is shorter), above-below direction is set to its major diameter direction (direction that internal diameter is longer).But, this setting be the structure according to motor and by reach optimal in the way of carry out.Such as, in described example, stator coil (flux-producing portion part) is arranged on position at the two of above-below direction, but also stator coil can be not only provided at above-below direction, is also provided with in the other direction.Now, ventilation orifice portion can be set to described major diameter direction exist multiple as shape.Internal diameter now is defined as on the surfaces of revolution internal diameter of the rotary shaft by ventilation orifice portion.Now, it is not necessary to as described above ventilation orifice portion is set to the shape that minor axis direction is orthogonal with major diameter direction.
But, in the electro-motor working rig being gripped the chain saw that uses etc from upside by operator, if as described chain saw 1 when above-below direction arranges stator coil and ventilation orifice portion is set to the shape of lengthwise, then can carry out using the cooling of cooling wind efficiently, and in the way of will not hindering operation, cooling wind can be discharged towards front from below, thus be particularly effective.
And, in described composition, when motor 30 or fan guide portion 41 are fixed on casing 10, employ motor chassis 40.However, it is possible to do not use motor chassis and they be directly mounted at casing.But, stator is being fixed relative to casing, but then, during the rotor that installation rotatably must support relative to them, by installing motor or fan guide portion via motor chassis as described above, it is possible to make assembling become easy, and improve assembly precision.
And, in described example, if electro-motor working rig is chain saw, as long as but it is clear that use motor and motor to be cooled the electro-motor working rig of (air cooling) equally, the most same composition is the most effective.
Claims (11)
1. an electro-motor working rig, it is characterised in that including:
Motor, possesses rotor and the stator of rotation, and the described stator described peritrochanteric on the surfaces of revolution of described rotor is equipped with flux-producing portion part；
Fan, is installed on described rotor, generates cooling wind with the rotation of described rotor；And
Fan guide portion, is provided with, along the rotary shaft direction of described rotor, the ventilation orifice portion that described rotor runs through, and has the separating part between described flux-producing portion part and the described fan being configured on described rotary shaft direction,
Described ventilation orifice portion is set to the shape being provided with minor axis direction with major diameter direction, and described minor axis direction is the direction that the internal diameter by described rotary shaft on the described surfaces of revolution in described ventilation orifice portion is short, and described major diameter direction is the direction of described interior path length.
Electro-motor working rig the most according to claim 1, it is characterised in that
Described flux-producing portion part is to arrange along described major diameter direction.
Electro-motor working rig the most according to claim 2, it is characterised in that
The side being provided with described fan of the described separating part in described fan guide portion, is provided with cooling wind guide portion, and described cooling wind guide portion covers the region beyond a region of described fan periphery.
Electro-motor working rig the most according to claim 3, it is characterised in that including:
Casing, covers described fan and described fan guide portion, and is provided with the air vent that described cooling wind is expelled to outside,
When the described rotary shaft of described rotor is observed, described air vent is arranged in a described region.
Electro-motor working rig the most according to claim 4, it is characterised in that
Described fan guide portion is fixed on described casing by making fixture run through fixed part, and described fixed part is disposed along outside the two of the described ventilation orifice portion in described minor axis direction respectively.
6. according to the electro-motor working rig described in claim 4 or 5, it is characterised in that
Described fan guide portion is fixed on described casing via the motor chassis housing described motor.
7. according to the electro-motor working rig described in claim 4 or 5, it is characterised in that
The operation component driven by described motor is arranged on the wherein side on the described minor axis direction of described casing,
When described rotary shaft is observed, a described region be arranged on described in wherein side.
Electro-motor working rig the most according to claim 7, it is characterised in that
A described region be from use described electro-motor working rig time vertical described rotor lower section until described wherein side and arrange,
Described rotor by from described underneath towards described wherein side in the way of and rotate.
Electro-motor working rig the most according to claim 7, it is characterised in that
Described operation component is by driving gear to be driven, and described driving gear is to be that described rotor is fixed in opposition side with described flux-producing portion part when described fan is observed on described rotary shaft direction.
Electro-motor working rig the most according to claim 9, it is characterised in that
Described operation component is saw chain, and described saw chain is along the circumference walking guiding bar extended towards described wherein side from described casing.
11. 1 kinds of electro-motor working rigs, it is characterised in that including:
Motor, possesses rotor and stator, and described rotor rotates around the axle along the 1st direction, and described stator is equipped with two flux-producing portion parts clipping described rotor along the both sides in the 2nd direction vertical with described 1st direction；
Fan, is installed on described rotor, generates cooling wind with the rotation of described rotor；And
Fan guide portion, described 1st direction is provided with the ventilation orifice portion that described rotor runs through, and there is the separating part between described flux-producing portion part and the described fan being configured on described 1st direction, the internal diameter along described 2nd direction in described ventilation orifice portion is bigger than the internal diameter in the described ventilation orifice portion along 3rd direction vertical with described 1st direction and described 2nd direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-038481 | 2015-02-27 | ||
| JP2015038481A JP6455226B2 (en) | 2015-02-27 | 2015-02-27 | Electric working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205572617U true CN205572617U (en) | 2016-09-14 |
Family
ID=56846022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521002421.4U Active CN205572617U (en) | 2015-02-27 | 2015-12-07 | Electric motor workover rig |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6455226B2 (en) |
| CN (1) | CN205572617U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865888A (en) * | 2017-11-23 | 2019-06-11 | 安德烈亚斯·斯蒂尔两合公司 | Hand-held power tool |
| CN112497159A (en) * | 2019-09-13 | 2021-03-16 | 株式会社牧田 | Electric working machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2023047954A (en) | 2021-09-27 | 2023-04-06 | 株式会社マキタ | Chain saw |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3829721A (en) * | 1973-07-30 | 1974-08-13 | Black & Decker Mfg Co | Air flow baffle construction for electric motor devices |
| DE3147501A1 (en) * | 1981-12-01 | 1983-06-09 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Motor housing for electrical tools |
| JPS6124181U (en) * | 1984-07-16 | 1986-02-13 | 芝浦メカトロニクス株式会社 | Electric tool |
| JP3013930U (en) * | 1995-01-24 | 1995-07-25 | 国産電機株式会社 | Electric motor |
| JP2002210705A (en) * | 2001-01-19 | 2002-07-30 | Ryobi Ltd | Chain saw |
| DE10261572A1 (en) * | 2002-12-23 | 2004-07-01 | Robert Bosch Gmbh | Electric hand tool machine e.g. drill, has arrangement for generating additional cooling air flow that passes at least one machine component outside or in low flow region of cooling air flow |
| JP4993192B2 (en) * | 2007-05-28 | 2012-08-08 | 日立工機株式会社 | Electric tool |
| JP5019126B2 (en) * | 2008-01-15 | 2012-09-05 | 日立工機株式会社 | Electric tool |
-
2015
- 2015-02-27 JP JP2015038481A patent/JP6455226B2/en active Active
- 2015-12-07 CN CN201521002421.4U patent/CN205572617U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865888A (en) * | 2017-11-23 | 2019-06-11 | 安德烈亚斯·斯蒂尔两合公司 | Hand-held power tool |
| CN112497159A (en) * | 2019-09-13 | 2021-03-16 | 株式会社牧田 | Electric working machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6455226B2 (en) | 2019-01-23 |
| JP2016159381A (en) | 2016-09-05 |
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| GR01 | Patent grant | ||
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Address after: The Japanese port of Tokyo Gangnan two chome 15 No. 1 Patentee after: Machine holding company Address before: The Japanese port of Tokyo Gangnan two chome 15 No. 1 Patentee before: Hitachi Koki Company Limited |
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| CP01 | Change in the name or title of a patent holder |