CN206125141U - Electrodynamic type power steering casing for device - Google Patents
Electrodynamic type power steering casing for device Download PDFInfo
- Publication number
- CN206125141U CN206125141U CN201590000331.3U CN201590000331U CN206125141U CN 206125141 U CN206125141 U CN 206125141U CN 201590000331 U CN201590000331 U CN 201590000331U CN 206125141 U CN206125141 U CN 206125141U
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- China
- Prior art keywords
- face
- housing member
- chimeric
- front side
- rear side
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Power Steering Mechanism (AREA)
- General Details Of Gearings (AREA)
- Gasket Seals (AREA)
Abstract
The utility model discloses an electrodynamic type power steering casing for device has realized the structure that can prevent that oil from spilling to exterior space from the fitting portion of the front side casing component that constitutes the casing and rear side casing component. In the external diameter that the inner peripheral surface the formed side gomphosis facial (20a) of the preceding side neck portion (25) that constitutes front side casing member (17a) by front side cylinder face portion (26) and front side convex part (27) component. In the internal diameter that the outer peripheral face the formed side gomphosis facial (19a) of the back side neck portion (30) that constitutes rear side casing member (18a) by rear side cylinder face portion (31) and rear side concave part (32) component. Make front side cylinder face portion (26) and rear side cylinder face portion (31) carry out the gomphosis based on cylinder face to make front side convex part (27) and rear side concave part (32) carry out concave -convex embedded, the casing component (17a) that from this will incline combines with rear side casing component (18a).
Description
Technical field
This utility model is related to a kind of housing of composition electric type power steering device, and the electric type power steering device is used
Make the steering apparatus of automobile, electro-motor is used as auxiliary power source by it, needed for being achieved in the operation to steering wheel
The mitigation of power.
Background technology
Figure 16 and Figure 17 represent the electric type power steering device disclosed in Japanese Unexamined Patent Publication 2011-094763 publications.Make
Steering spindle 2 for handling maneuver rotary shaft is fixed with steering wheel 1 in rearward end, and is in the inward turning of housing 3 by leading section supporting
Turn freely.Worm gear 4 is fixed with the leading section of steering spindle 2.Worm screw 8 is configured to be driven and rotated by electro-motor 7, and borrows
It is to rotate freely in housing to help 1 couple of rolling bearing 9a, 9b and support at both ends.Worm screw 8 is caused in the axial direction of worm shaft 6
Between portion arrange worm tooth 5 engage with worm gear 4.Using this construction, the auxiliary power of electro-motor 7 can be transferred to worm gear
4。
Figure 18 represents the major part of electric type power steering device.Worm gear 4a is fixed on electricity by the way that interference fit etc. is outer
The output section of dynamic formula power steering gear is the part in output shaft 10 between 1 couple of rolling bearing 11a, 11b, and is configured to
Can rotate together with output shaft 10.In housing 3a, output shaft 10 is being supported as only using 1 couple of rolling bearing 11a, 11b
In the state of can rotating, the output shaft 10 is set to be combined with the leading section of steering spindle 2a by torsion bar 12.(the ginseng of electro-motor 7
According to Figure 16 and Figure 17) the handling maneuver moment of torsion that steering spindle 2a is put on from steering wheel 1 that detected according to torque sensor 13
Direction and size and drive worm screw 8a to rotate, and auxiliary power (auxiliary torque) is put on into output shaft 10.The rotation of output shaft 10
Turn to be transferred to become the little tooth of the input unit of tooth sector unit 16 via 1 couple of universal joint 14a, 14b and jackshaft 15
Wheel shaft, and desired steering angle is applied to deflecting roller.
The profit for guaranteeing the worm gear 4 (4a) and the engaging piece of the worm tooth 5 is coated with worm gear 4 (4a) and worm tooth 5
The grease of slip.By the front side housing structure by 2 parts are divided on the axial direction of output shaft 10 (left and right directions of Figure 18)
Part 17 and rear side housing member 18 are combined and constitute housing 3 (3a).That is, set the rear portion outer peripheral face in front side housing member 17
It is cylindric that the chimeric face 19 of the cylindric internal side diameter put is embedded in that the anterior inner peripheral surface in rear side housing member 18 arranges
In the state of the chimeric face 20 of outside diameter, front side housing member 17 is combined with rear side housing member 18 using bolt 21 and solid
It is fixed, thus constitute housing 3 (3a).In order to ensure the assembling easiness of housing 3 (3a), the chimeric face 19 of internal side diameter and outside diameter are made
There is minim gap between chimeric face 20.Part between front side housing member 17 and rear side housing member 18, with phase
The part adjacent with the side in the externally-located space of fitting portion of the chimeric face 20 of outside diameter for the chimeric face 19 of internal side diameter, if
It is equipped with the o-ring 22 as seal member.Using the o-ring 22, prevent from collecting in the bottom of the inner space of housing 3 (3a)
Oil (base oil isolated from thickening agent in grease, the base oil in the grease, carrying out to each structure member plus
Processing oil that man-hour uses etc.) from small of the fitting portion for being present in the chimeric face 19 of internal side diameter face 20 chimeric with outside diameter
Gap by and spill to space outerpace.
Disclosed in Japanese Unexamined Patent Publication 2011-094763 publications composition electric type power steering device housing 3 (3a) by
The metals such as aluminium alloy are constituted.On the other hand, if constituting housing by synthetic resin, can realize that the housing or even electrodynamic type are dynamic
The lightweight of power transfer.But, if being made up of housing synthetic resin, easily by the temperature change of surrounding, external force
Affect, just in case housing deforms and then causes the chimeric face of internal side diameter and rear side housing member of front side housing member because of the impact
Outside diameter be fitted together to face fitting portion gap enlargement, then be possible to can spill from the gap for oil.If oil leakage, not only can
The reason for becoming the failure of electric type power steering device, and oil spill it is also possible to the driver that makes dirty at one's side, clothes
Deng.In the case where housing is constituted by synthetic resin, the construction that can more reliably prevent oil from spilling from housing is sought.
Citation
Patent documentation
Patent documentation 1：Japanese Unexamined Patent Publication 2011-094763 publications
Utility model content
Utility model problem to be solved
In view of above-mentioned this situation, the purpose of this utility model is that realization is prevented from oil from the first housing member and the
The construction that the fitting portion of two housing members spills to space outerpace.
For solving the scheme of problem
Electric type power steering device housing of the present utility model, to being used to make the auxiliary power produced by electro-motor
The decelerator of increase is received, and the electric type power steering device housing possesses the first housing member, the second housing structure
Part and concavo-convex fitting portion.
First housing member has：First portion；And outside diameter is chimeric facial, the chimeric face of the outside diameter sets
It is placed in the inner peripheral surface in first portion.
Second housing member has：Second portion；And internal side diameter is chimeric facial, the chimeric face of the internal side diameter sets
It is placed in the outer peripheral face in second portion and is embedded in the chimeric face of the outside diameter.
The concavo-convex fitting portion is constituted by making convex portion (raised line) concavo-convex chimeric with recess (groove), the convex portion with
Radially prominent state is formed in the chimeric face that the outside diameter is fitted together to a side in the chimeric face of facial and described internal side diameter
On, the recess is formed in the outside diameter and is fitted together in the chimeric face of facial and described internal side diameter with the state being diametrically recessed
On the chimeric face of the opposing party,
The housing member of at least one party is made up of synthetic resin in first housing member and second housing member.
It is preferred that the cross sectional shape of the convex portion is arc-shaped for the cross sectional shape of arc-shaped and the recess.In this situation
Under, preferably make the curvature half involved by the cross sectional shape of radius of curvature involved by the cross sectional shape of the convex portion and the recess
Footpath is different.That is, preferably the radius of curvature involved by the cross sectional shape of the convex portion is set to into the section more than the recess
Radius of curvature involved by shape, or the radius of curvature involved by the cross sectional shape of the convex portion is set to less than the recess
Cross sectional shape involved by radius of curvature.However, it is also possible to make radius of curvature involved by the cross sectional shape of the convex portion with
Radius of curvature involved by the cross sectional shape of the recess is equal to each other.
Second housing member can also have flange part, flange part shape with the state prominent to radial outside
Into in the outer peripheral face in second portion second housing member on the chimeric direction of first housing member with
The internal side diameter is fitted together on the adjacent part of the rear side of face.The first housing member one described in the two sides of the flange part
Be provided with the side of side conical surface shape to meeting portion, it is described more to tend to radial outside then more to first housing to meeting portion
Component side inclines, make it is described support to meet portion and support with the end face of first housing member touch.
Electric type power steering device housing of the present utility model can also possess fixed engagement portion.The fixed engagement
Portion makes the first fixed engagement face for being formed at first housing member solid be formed at second housing member second
In the state of determining composition surface abutting, the first fixed engagement face is entered with the second fixed engagement face by welding or bonding
Row fixed engagement and constitute, and make the fixed engagement portion relative to the externally-located space side of the concavo-convex fitting portion.
Possessing the electric type power steering device housing in the fixed engagement portion can be configured to, the first housing structure
Part also has the first flange part, and first flange part is formed in first portion with the state prominent to radial outside
On outer peripheral face, second housing member also has the second flange part, and second flange part is with the shape prominent to radial outside
State and be formed in the outer peripheral face in second portion the chimeric side in second housing member to first housing member
It is fitted together to the internal side diameter upwards on the adjacent part of the rear side of face, the first fixed engagement face is first flange part
Two sides described in the second housing member side side, the second fixed engagement face is the both sides of second flange part
The side of the first housing member side described in face.
In this case it is preferably to, the thickness in the axial direction of first flange part is constant throughout complete cycle ground, and described second
Thickness in the axial direction of flange part is constant and equal with the thickness in the axial direction of first flange part throughout complete cycle ground, passes through
Welding is fixed with the second fixed engagement face to the first fixed engagement face and engages, so as to constitute the fixed engagement
Portion.However, it is also possible to make the thickness in the axial direction of first flange part mutual with the thickness in the axial direction of second flange part
Differ.
Electric type power steering device housing of the present utility model is also equipped with flexibly being clamped in the internal side diameter and is fitted together to
O-ring between facial face chimeric with the outside diameter.In the case, the o-ring can be made to be locked to fastening groove, institute
State fastening groove to be formed in the chimeric face of the internal side diameter in second housing member to the chimeric of first housing member
Rearward end on direction, the o-ring is flexibly clamped between fastening groove face chimeric with the outside diameter.
The convex portion can be made to be formed throughout complete cycle in the chimeric face of one, and can the recess in institute
The chimeric face for stating the opposing party is formed throughout complete cycle.
Or, the convex portion can be made to be formed with one to multiple place, and energy in the circumference of the chimeric face of one
The recess is enough set to be formed with one to multiple place in the circumference of the chimeric face of described the opposing party.
It is preferred that the chimeric face of one is formed at plastic housing member.
Utility model effect
According to electric type power steering device housing of the present utility model configured as described above, oil is prevented from from the
One housing member spills with the fitting portion of the second housing member to space outerpace.That is, the external diameter in first housing member is made
Convex portion that the chimeric face of either one in the chimeric face of internal side diameter of the chimeric face in side and the second housing member is formed and
The recess that the chimeric face of the opposing party is formed is carried out concavo-convex chimeric and constitutes concavo-convex fitting portion, thus by the first housing structure
Part is combined with second housing member.Therefore, with only by making the chimeric of the chimeric face of outside diameter face chimeric with internal side diameter
Realize that situation about being constituted based on mutual being fitted together to of barrel surface is compared in portion, it is possible to increase the sealing of fitting portion.As a result, energy
The oil leakage being enough effectively prevented in housing goes out.
Description of the drawings
Fig. 1 is the sectional view of the 1st that represents embodiment of the present utility model.
Fig. 2 is the a-a sectional views of the Fig. 1 illustrated in the state of biopsy cavity marker devices.
Fig. 3 is the b-b sectional views for omitting Fig. 1 that the part beyond housing is omitted and illustrated.
Fig. 4 is the partial side view of rear side housing.
Fig. 5 is the c portions enlarged drawing of Fig. 1.
Fig. 6 is the amplification view of other shapes of 2 examples for representing concavo-convex fitting portion.
Fig. 7 (A) be represent the 2nd of embodiment of the present utility model illustrate rear side housing member equivalent to Fig. 1
In c portions part amplification view, Fig. 7 (B) be represent the 2nd of embodiment of the present utility model equivalent to Fig. 5
Suitable figure.
Fig. 8 is the figure equivalent to Fig. 4 of the 3rd that represents embodiment of the present utility model.
Fig. 9 is the figure equivalent to Fig. 5 of the 3rd that represents embodiment of the present utility model.
Figure 10 is the figure equivalent to Fig. 4 of the 4th that represents embodiment of the present utility model.
Figure 11 is the figure equivalent to Fig. 5 of the 4th that represents embodiment of the present utility model.
Figure 12 is the sectional view of the 5th that represents embodiment of the present utility model.
Figure 13 is the figure equivalent to Fig. 5 of the 5th that represents embodiment of the present utility model.
Figure 14 is the figure equivalent to Fig. 5 of the 6th that represents embodiment of the present utility model.
Figure 15 is the figure equivalent to Fig. 5 of the 7th that represents embodiment of the present utility model.
Figure 16 is the side view in partial cross-section of 1 example of the electric type power steering device for representing existing construction.
Figure 17 is the d-d amplification views of Figure 16.
Figure 18 is the figure suitable with the e-e sections in Figure 17.
Specific embodiment
[the 1st of embodiment]
Fig. 1～Fig. 5 represents the 1st of embodiment of the present utility model.Including including this example, feature of the present utility model
It is the construction for preventing the oil collected in the bottom of the inner space of housing 3b from spilling to space outerpace.Electric type power
Transfer is entered using torque sensor 13a to the handling maneuver moment of torsion being input into from steering wheel 1 (with reference to Figure 16) to steering spindle 2b
Row is determined, and controls the energization to electro-motor 7 based on the measure signal.Auxiliary power Jing produced by the electro-motor 7
Output shaft 10a is applied to by decelerator 23.Torque sensor 13a and decelerator 23 are accommodated in the inside of housing 3b.
Input shaft 24 and output shaft 10a are rotatably supported in housing 3b.Input shaft 24 and output shaft 10a shapes
Become hollow round tubular, and be combined with each other by torsion bar 12a in the state of being configured to coaxially to each other.That is, make torsion bar 12a's
Leading section (left part in Fig. 1) is combined with the leading section of output shaft 10a and is fixed them, and makes the rear end of torsion bar 12a
Portion (right part in Fig. 1) is combined with the rearward end of input shaft 24 and is fixed them.Output shaft 10a is via 1 pair of universal joint
14a, 14b (with reference to Figure 16) and jackshaft 15 and be connected with the pinion shaft of the input unit for becoming tooth sector unit 16.It is defeated
Entering axle 24 can be driven by steering spindle 2b and be rotated.
If carrying out handling maneuver to steering wheel 1, input shaft 24 and output shaft 10a are utilized and put on via steering spindle 2b
The handling maneuver moment of torsion of input shaft 24 and for output shaft 10a rotation resistance making torsion bar 12a enterprising in torsional direction
Row elastic deformation, and input shaft 24 and output shaft 10a carry out in a rotational direction relative shift.Using in input shaft 24
Between between portion's outer peripheral face and the rearward end outer peripheral face of output shaft 10a arrange torque sensor 13a can be to the relative shift
It is measured.The measure signal of torque sensor 13a is transferred into the controller for control to the energization of electro-motor 7,
Energization direction and turn on angle of the controller control to electro-motor 7, via worm reducer 23 by auxiliary power (auxiliary
Moment of torsion) put on output shaft 24.
Housing 3b possesses：Front side housing member 17a, it is equivalent to the first housing member and the housing member of a side；Afterwards
Side body component 18a, it is equivalent to the second housing member；And concavo-convex fitting portion 45.That is, by will be in input shaft 24 and defeated
The axial direction of shaft 10a be divided on fore-and-aft direction (left and right directions in Fig. 1) 2 parts, front side housing member 17a with it is rear
Side body component 18a is mutually combined and constitutes housing 3b.Front side housing member 17a is the injection-molded article of synthetic resin, at it
Rearward end is formed with the cylindric front side tube part 25 equivalent to first portion.It is attached from rear end in the inner peripheral surface of front side tube part 25
The chimeric face 20a of outside diameter for being formed in part with the chimeric face equivalent to a side of near-end point to end edge.It is embedding in outside diameter
The first half (left side in Fig. 1 and Fig. 5) for closing face 20a is formed with the front side cylinder face part of cylinder planar throughout complete cycle
26, the internal diameter of the front side cylinder face part 26 does not change in the longitudinal direction.The chimeric face 20a of outside diameter rearward end (Fig. 1 and
Right part in Fig. 5) front side convex portion 27 is formed with throughout complete cycle, the front side convex portion 27 is relative to front side cylinder face part 26 to footpath
Inwardly side projects.The cross sectional shape of the front side convex portion 27 on the imaginary plane of the central shaft comprising front side cylinder face part 26 is circle
Arcuation.Additionally, the rear end face of front side tube part 25 is present in the imaginary plane with the orthogonality of center shaft of the front side tube part 25.In front side
Many places position (being position at 3 in illustrative example) in the rearward end of the outer peripheral face in cylinder portion 25 in circumference is formed with front side flange part
28, flange part 28 is formed with the through hole for inserting for bolt 29 (omitting diagram) on front side of this.Additionally, front side flange part 28
Trailing flank is present in the imaginary plane with the orthogonality of center shaft of front side tube part 25.The position of front side flange part 28 is set to vehicle
In the state of installation positioned at bottom part offset in a circumferential direction about 30 degree 2 at position and to vehicle installation
Under state in the top 1 at position amount to 3 at position.The thickness of front side housing member 17a is that 2mm～5mm is left
It is right.
Rear side housing member 18a is die cast product or the synthesis of the light-alloys such as the casting piece of iron class alloy, aluminium alloy
Injection-molded article of resin etc., and it is formed with the cylindric rear side tube part 30 equivalent to second portion in leading section.In rear side
In the outer peripheral face in cylinder portion 30 near front end part to front-end edge being formed in part with equivalent to the opposing party it is chimeric face in
The chimeric face 19a in footpath side.Formed throughout complete cycle in the first half (left side in Fig. 1 and Fig. 5) of the chimeric face 19a of internal side diameter
The internal diameter for having the rear side cylinder face part 31 of cylinder planar, the rear side cylinder face part 31 does not change in the longitudinal direction.In internal side diameter
The rearward end (right part in Fig. 1 and Fig. 5) of chimeric face 19a is formed with rear side recess 32, the rear side recess throughout complete cycle
32 are recessed relative to rear side cylinder face part 31 to radially inner side.On the imaginary plane of the central shaft comprising rear side cylinder face part 31
Rear side recess 32 cross sectional shape be arc-shaped.In this example, the radius of curvature of the cross sectional shape of rear side recess 32 is set to
It is roughly equal with the radius of curvature of the cross sectional shape of front side convex portion 27, by front side housing member 17a and rear side housing member 18a
In the state of combination, rear side recess 32 is seamlessly chimeric with front side convex portion 27.
The part that the rear side of face 19a chimeric with internal side diameter is adjacent in the outer peripheral face of rear side tube part 30, throughout complete cycle ground
Form the rear flange portion 33 that oriented radial outside is projected.Rear flange portion 33 is configured to include：Rear side path flange part 34, its
Be formed as in a circumferential direction throughout the continuous state in complete cycle ground；And the big footpath flange part 35 of rear side, it is in the path flange part
The position matched with front side flange part 28 is formed in 34 outer peripheral face.The leading flank of rear side path flange part 34 is present in from rear
The imaginary plane that the central shaft of side tube part 30 passes through.Additionally, being formed with for inserting for bolt 29 in the big footpath flange part 35 of rear side
Through hole (omit diagram).The thickness of rear side housing member 18a is 1.5mm～3.5mm in the case of iron class alloy system
Left and right, is 2mm～5mm or so in the case of light-alloy system, is 3mm～6mm or so in the case of plastic.
By be fitted together to the chimeric face 20a of outside diameter face 19as chimeric with internal side diameter and by front side housing member 17a with it is rear
Side body component 18a is combined, and thus constitutes housing 3b.Causing, the chimeric face 20a of outside diameter face 19as chimeric with internal side diameter is embedding
In the state of conjunction, the rear side cylinder face part of the face 19a chimeric with internal side diameter of front side cylinder face part 26 of the chimeric face 20a of outside diameter
31 are seamlessly carried out based on the chimeric of barrel surface (by interference fit), and cause the front side of the chimeric face 20a of outside diameter
The rear side recess 32 of the face 19a chimeric with internal side diameter of convex portion 27 seamlessly carries out concavo-convex chimeric, thus constitutes concavo-convex fitting portion
45.And, make the rear end face and the rear side path flange of rear side housing member 18a of the front side tube part 25 of front side housing member 17a
The leading flank in portion 34 is abutted, and the trailing flank of front side flange part 28 is abutted with the leading flank of the big footpath flange part 35 of rear side, from
And in the state of causing front side flange part 28 Chong Die with the big footpath flange part 35 of rear side, using bolt 29 and nut front side flange is made
Portion 28 is combined with the big footpath flange part 35 of rear side and is fixed them.However, it is possible to so as to be inserted through in front side flange part 28 with after
The bolt of the through hole that the flange part 28 (35) of the side in the big footpath flange part 35 in side is formed is screwed togather and then is anchored in the opposing party
The screw that formed of flange part 35 (28), be achieved in their combination and fix.
Be assembled with the inside of housing 3b the die cast product of light-alloy such as casting piece, aluminium alloy as iron class alloy,
Or the circular intermediate plate 36 of the injection-molded article of synthetic resin etc..Before making that intermediate plate 36 is embedded by press-in and being fixed on
Part near the rear end of side body component 17a.Output shaft 10a is in the inner side of front side housing member 17a and intermediate plate 36 by depth
1 couple of rolling bearing 11c, the 11d such as ditch ball bearing are rotatably supported.The worm gear 4b for constituting worm reducer 23 is matched somebody with somebody by interference
Close etc. and it is outer be fixed in output shaft 10a 1 couple of rolling bearing 11c, 11d part to each other, and together with output shaft 10a
Rotation.Worm screw 8b makes the worm tooth 5 that the axial pars intermedia in worm shaft 6 is arranged engage with worm gear 4b, and by deep groove ball bearing etc. 1
Rolling bearing 9c, 9d are rotatably supported in the housing member 17a of front side.Worm screw 8b is configured to by electro-motor 7
Drive and rotate.By this construction, the auxiliary power of electro-motor 7 can be transferred to worm gear 4b.In worm gear 4b and worm screw
Tooth 5 is coated with the grease for guaranteeing worm gear 44b and the lubricity of the engaging piece of the worm tooth 5.
In the local of housing 3b, the intercommunicating pore 37 that the inner space of housing 3b is connected with space outerpace is from internal side diameter
It is fitted together in the fitting portion of face 19a face 20a chimeric with outside diameter to underlying bottom under the installment state of vehicle
(part corresponding with the part that oil collects surrounded by chain-dotted line α in Fig. 1 and Fig. 3, is in a circumferential direction fitting portion for position
Bottom) deviate part, be set to the state of the part insertion diametrically.Specifically, intercommunicating pore 37 is arranged at
Lowest positions from the fitting portion of the chimeric face 19a of internal side diameter face 20as chimeric with outside diameter are chimeric facial with the internal side diameter
Deviate 60 degree～90 degree to circumferencial direction one side (left side in Fig. 3) centered on the central shaft of 19a (the chimeric face 20a of outside diameter)
The scope of left and right.By this intercommunicating pore 37 by the wire harness 38 being connected with torque sensor 13a via adapter 39 and plug
40 and to housing 3b space outerpace pull out.Adapter 39 is retained as rocking in the inner side of intercommunicating pore 37.Plug 40 with
The mode that can be loaded and unloaded is connected with device 39 is connect.
According to the electric type power steering device of above-mentioned such this example, oil can be more reliably prevented from composition housing
The front side housing member 17a of 3b spills with the fitting portion of rear side housing member 18a.That is, justified by front side cylinder face part 26 and rear side
The barrel surface fitting portion of cylinder face 31 and front side convex portion 27 constitute front side housing structure with the concavo-convex fitting portion 45 of rear side recess 32
The fitting portion of the outside diameter of part 17a chimeric face 20a face 19as chimeric with the internal side diameter of rear side housing member 18a.Therefore, with
The chimeric face of outside diameter is only made up of barrel surface fitting portion compared with the situation that internal side diameter is fitted together to the fitting portion of face, is prevented from
To each other detached direction shifts for front side housing member 17a and rear side housing member 18a, be particularly prevented from the circumferential from
The part that bound fraction based on bolt 29 deviates detached direction displacement to each other, therefore, it is possible to improve the sealing of fitting portion
Property.As a result, the oil leakage that can be reliably prevented in housing 3b goes out.Further, since by barrel surface fitting portion and concavo-convex chimeric
Portion 45 constitutes the fitting portion of front side housing member 17a and rear side housing member 18a, therefore will not be used in front side housing member
The quantity of the number of 17a and the bolt that rear side housing member 18a is combined, i.e. front side flange part 28 and the big footpath flange part 35 of rear side
Become too many, adequately achieve to preventing that the oil leakage in housing 3b goes out.
Further, since the electric type power steering device of this example not under the installment state of vehicle in bottom
Position significantly deviate 2 at position form the big footpath flange part 35 of rear side, collect at most therefore, it is possible to improve the oil in housing 3b
Bottom part sealing.
The housing 3b of this example is formed so that the radius of curvature of the cross sectional shape of rear side recess 32 and cutting for front side convex portion 27
The radius of curvature of face shape is substantially identical to each other, in the state for combining front side housing member 17a with rear side housing member 18a
Under, rear side recess 32 is seamlessly chimeric with front side convex portion 27.However, it is also possible to make the curvature of the cross sectional shape of rear side recess 32
Radius is different with the radius of curvature of the cross sectional shape of front side convex portion 27.If so that the curvature of the cross sectional shape of rear side recess 32
Radius is different with the radius of curvature of the cross sectional shape of front side convex portion 27, then can reliably make rear side recess 32 convex with front side
Portion 27 abuts throughout circumferencial direction, becomes will not the rear side amount of recess of recess 32 and the overhang of front side convex portion 27
Greatly, it is possible to increase the sealing of housing 3b.As a result, the external diameter of housing 3b can be suppressed to less.That is, such as Fig. 6 (A) institute
Show, if by radius of curvature r of the cross sectional shape of rear side recess 32a32aIt is set to the curvature of the cross sectional shape more than front side convex portion 27a
Radius R27a(r32a＞ R27a), then 1 position that can be on the fore-and-aft direction in Fig. 6 (A) shown in point P reliably makes rear side
Recess 32a and front side convex portion 27a throughout rear side recess 32a and the holding section of front side convex portion 27a circumferencial direction abut.With this
Relatively, as shown in Fig. 6 (B), if the radius of curvature of the cross sectional shape of rear side recess 32b is set to into cutting less than front side convex portion 27b
Radius of curvature (the r of face shape32b＜ R27b), then 2 position reliability that can be on the fore-and-aft direction in Fig. 6 (B) shown in point Q
Make rear side recess 32b and front side convex portion 27b throughout the circumferencial direction of rear side recess 32b Yu the holding section of front side convex portion 27b
Abut.As long as also, the cross sectional shape of front side convex portion 27 and rear side recess 32 is can to realize concavo-convex chimeric shape, not
It is confined to arc-shaped, additionally it is possible to variously-shaped using triangle, rectangle etc..
The housing 3b of this example convex portions 27 on front side of the inner peripheral surface of front side housing member 17a is formed throughout complete cycle, and
The outer peripheral face of rear side housing member 18a forms rear side recess 32 throughout complete cycle.However, it is also possible in front side housing member 17a
Inner peripheral surface circumference on 1 at so that many places position form front side convex portion 27, and in the outer peripheral face of rear side housing member 18a
Circumference on 1 at so that many places position formed rear side recess 32.Specifically, for example can only in front side housing member 17a
Outer peripheral face in part between the flange part 28 of front side form front side convex portion 27, and only in the inner circumferential of rear side housing member 18a
Part in face between the big footpath flange part 35 of rear side forms rear side recess 32.In other words, by front side housing 17a and rear side housing
18a combination in the state of, can only with the unmatched part of front side flange part 28 formed on front side of convex portion 27, and only with it is rear
The side unmatched part of big footpath flange part 35 forms rear side recess 28.Even in this case, also front side flange part 28 with it is rear
The big footpath flange part 35 in side is bonded to using bolt and is fixed in the state of touching, therefore, it is possible to substantially ensure that the close of the part
Feng Xing.In addition, by front side flange after the chimeric face 20a of outside diameter face 19as chimeric with internal side diameter is fitted together to, using bolt
Portion 28 combined with the big footpath flange part 35 of rear side and it is fixed before in the state of, be prevented from front side flange part 17a and rear flange
Portion 18a is rotated against in the circumferential.
The housing 3b of this example is set in the housing member 17a and rear side housing member 18a of front side at least front side housing member 17a
It is made up of synthetic resin.However, it is also possible to before by the material manufacture beyond the synthetic resin such as the light-alloys such as iron class alloy, aluminium alloy
The both sides of side body component 17a and rear side housing member 18a.Even if the material beyond by synthetic resin makes front side housing structure
In the case of the both sides of part 17a and rear side housing member 18a, it is also possible to obtain be effectively prevented oil from front side to a certain extent
The effect of the present utility model that the fitting portion of housing member 17a and rear side housing member 18a spills to space outerpace.But, if
It is set to be made up the housing member of at least one party in the housing member 17a and rear side housing member 18a of front side of synthetic resin, then holds
It is vulnerable to temperature change, the impact of external force of surrounding, therefore, it is possible to significantly obtain the effect for preventing oil leakage from going out of the present utility model.
If being particularly set to be made up the front side housing member 17a for being formed with front side convex portion 27 of synthetic resin as this example, can
Significantly more obtain effect of the present utility model.If plastic front side housing member 17a is with the rising of environment temperature
And deform, then volume (sectional area) of the front side convex portion 27 that housing member 17a is formed increases on front side of this.As a result, can
The chimeric intensity of increase front side convex portion 27 and rear side recess 32, the deformation of the front side housing member 17a for no matter rising with temperature
How, can well guarantee the sealing of housing 3b.
[the 2nd of embodiment]
Fig. 7 represents the 2nd of embodiment of the present utility model.The electric type power steering device of this example will constitute housing
The leading flank of the rear side path flange part 34a of the rear side housing member 18b of 3c is set to more tend to radially from inner peripheral to outer peripheral edge
Outside then get over inclined conical surface shape forwards to meeting portion 46.On the other hand, constitute the front side housing member 17a's of housing 3c
The rear end face of front side tube part 25 is present in the imaginary plane with the orthogonality of center shaft of the front side tube part 25.
The trailing flank of the front side flange part 28 (with reference to Fig. 2) of housing member 17a is with rear side housing member 18b's on front side of making
The leading flank of the big footpath flange part 35 of rear side is abutted and using bolt 29 and nut by front side flange part 28 and the big footpath flange part of rear side
35 combine and in the state of fixation, can be met on direction of the portion 46 in Fig. 7 (b) by shown in arrow β to front side cylinder using supporting
The rear end face in portion 25 is pressed.The chimeric face 20a of outside diameter and rear side shell thereby, it is possible to improve front side housing member 17a
The chimeric intensity of the fitting portion of the chimeric face 19a of the internal side diameter of body component 18b.The chimeric face of outside diameter can particularly be improved
The chimeric intensity of the concavo-convex fitting portion 45 of the rear side recess 32 of the face 19a chimeric with internal side diameter of front side convex portion 27 of 20a.Its result
It is that the oil leakage that can be more reliably prevented from housing 3c goes out.Other structures and effect, effect and the of aforesaid embodiment
1 identical.
[the 3rd of embodiment]
Fig. 8～Fig. 9 represents the 3rd of embodiment of the present utility model.The electric type power steering device of this example is by structure
Into housing 3d front side housing member 17b be set to the light-alloys such as the casting piece of iron class alloy, aluminium alloy die cast product or
The injection-molded article of synthetic resin.In front side, the rearward end of housing member 17b is formed with the front side tube part 25a of cylindrical shape.Front
The part near rear end of the inner peripheral surface of side tube part 25a is formed in part with the chimeric face 20b of outside diameter to end edge.In external diameter
Latter half of (right-hand part in Fig. 9) of the chimeric face 20b in side is formed with the front side cylinder face part of cylinder planar throughout complete cycle
26a, the internal diameter of front side cylinder face part 26a does not change on axial direction (left and right directions in Fig. 9).In the chimeric face of outside diameter
The first half (left side in Fig. 9) of 20b is formed with front side recess 41 of the section in concave arc shape throughout complete cycle, and the front side is recessed
Portion 41 is recessed relative to front side cylinder face part 26a to outside diameter.That is, housing member 17b in front side is front equivalent to the first housing member
Equivalent to first portion, outside diameter is fitted together to chimeric faces of the face 20b equivalent to the opposing party to side tube part 25a.Front side tube part 25a's
Rear end face is present in the imaginary plane with the orthogonality of center shaft of the front side tube part 25a.
The rear side housing member 18c for constituting housing 3d is the injection-molded article of synthetic resin.Rear side housing member 18c's
Leading section is formed with the rear side tube part 30a of cylindrical shape.Rear side tube part 30a outer peripheral face near front end part to front-end edge
Be formed in part with the chimeric face 19b of the chimeric internal side diameters of face 20b chimeric with the outside diameter of front side housing member 17b.Including
Latter half of (right-hand part in Fig. 9) of the chimeric face 19b in footpath side is formed with the rear side cylinder face part of cylinder planar throughout complete cycle
31a, the internal diameter of rear side cylinder face part 31a does not change on axial direction (left and right directions in Fig. 9).In the chimeric face of internal side diameter
The first half (left side in Fig. 9) of 19b is formed with rear side convex portion 42 of the section in convex arch throughout complete cycle, and the rear side is convex
Portion 42 is prominent to external diameter side relative to rear side cylinder face part 31a.That is, rear side housing member 18c equivalent to the second housing member, after
Equivalent to second portion, internal side diameter is fitted together to chimeric faces of the face 19b equivalent to a side to side tube part 30a.In addition, rear side convex portion 42
With cross sectional shape that can be seamlessly chimeric with front side recess 41.
By be fitted together to the chimeric face 20b of outside diameter face 19bs chimeric with internal side diameter and by front side housing member 17b with it is rear
Side body component 18c is combined, and thus constitutes housing 3d.It is fitted together to the chimeric face 20b of outside diameter face 19bs chimeric with internal side diameter is made
In the state of, the rear side cylinder face part of the front side cylinder face part 26a face 19b chimeric with internal side diameter of the chimeric face 20b of outside diameter
31a is seamlessly carried out based on the chimeric of barrel surface (by interference fit).The front side recess 41 of the chimeric face 20b of outside diameter and
The rear side convex portion 42 of the chimeric face 19b of internal side diameter is seamlessly carried out concavo-convex chimeric (by interference fit) and is constituted concavo-convex chimeric
Portion 45a.And, make the rear end face and the rear side path of rear side housing member 18c of the front side tube part 25a of front side housing member 17b
The leading flank of flange part 34 is abutted, and make the trailing flank of the front side flange part 28 (with reference to Fig. 2) of front side housing member 17b with it is rear
The leading flank of the big footpath flange part 35 of rear side of side body component 18c is abutted, and is causing front side flange part 28 and the big footpath flange of rear side
In the state of portion 35 overlaps, the big footpath flange part 35 of front side flange part 28 and rear side is combined and fixed using bolt 29 and nut.
Other structures and effect, effect are identical with the 1st of aforesaid embodiment the.
[the 4th of embodiment]
Figure 10～Figure 11 represents the 4th of embodiment of the present utility model.The electric type power steering device of this example exists
The leading section for constituting the rear side housing member 18d of housing 3e is formed with the rear side tube part 30b of cylindrical shape.Rear side tube part 30b's
The part near front end of outer peripheral face is formed in part with the chimeric face 19c of internal side diameter to front-end edge.In the chimeric face of internal side diameter
Latter half of (right-hand part in Figure 11) of 19c is formed with rear side cylinder face part 31b of cylinder planar throughout complete cycle, the rear side circle
The internal diameter of cylinder face 31b does not change on axial direction (left and right directions in Figure 11).By the length in the axial direction of rear side cylinder face part 31b
Degree is set to the length of the half of rear side cylinder face part 31a of the 3rd of aforementioned embodiments or so.In the chimeric face of internal side diameter
The first half (left side in Fig. 9) of 19c is formed with rear side convex portion 42 throughout complete cycle, and the rear side convex portion 42 is justified relative to rear side
Face 31b is prominent to radial outside for cylinder.
In the outer peripheral face of rear side tube part 30b the part adjacent with the rear side of rear side cylinder face part 31b, i.e. in the axial direction after
Part between side cylinder face part 31b and rear side path flange part 34, throughout complete cycle with relative to rear side cylinder face part 31b to
The state of radially inner side depression is formed with fastening groove 43.Section is rounded or ellipsoidal cross section and by rubber elastomeric material
Made by o-ring 44 engage (outer) in the fastening groove 43.
By be fitted together to the chimeric face 20b of outside diameter face 19cs chimeric with internal side diameter and by front side housing member 17b with it is rear
Side body component 18d is combined, and thus constitutes housing 3e.Causing, the chimeric face 20b of outside diameter face 19cs chimeric with internal side diameter is embedding
In the state of conjunction, o-ring 44 is flexibly clamped in the bottom of fastening groove 43 and the front side cylinder face part of front side housing member 17b
Between 26a.Oil leakage thereby, it is possible to be more reliably prevented from housing 3e goes out.In addition, make the chimeric face 20b of outside diameter with it is interior
The terminal stage of the chimeric face 19c in footpath side chimeric operation, o-ring 44 is clamped in the bottom of fastening groove 43 and front side barrel surface
Between portion 26a.Therefore, until so that the final rank of the chimeric face 20b of outside diameter face 19cs chimeric with internal side diameter chimeric operation
Till section, frictional force will not be acted between o-ring 44 and front side cylinder face part 26a, can swimmingly carry out the group of housing 3e
Dress.Other structures and effect, effect are identical with the 1st of aforesaid embodiment the.
[the 5th of embodiment]
Figure 12～Figure 13 represents the 5th of embodiment of the present utility model.Constitute the front side housing member 17c of housing 3f
It is made up of synthetic resin, rearward end (right part in Figure 13) of housing member 17c is provided with the front side of cylindrical shape on front side of this
Cylinder portion 25b, in the rearward end outer peripheral face of the front side tube part 25b the circular of oriented radial outside protrusion is formed throughout complete cycle
Front side flange part 28a.Thickness T on the axial direction (left and right directions in Figure 13) of front side flange part 28a28aBe formed as throughout
Complete cycle ground is constant.The rear end face for constituting the front side tube part 25b of front side housing member 17c is deposited with the trailing flank of front side flange part 28a
It is same plane and is present in imaginary plane with the orthogonality of center shaft of the front side tube part 25b.Additionally, front side flange part 28a
In be located at upper end (upper end in Figure 12) first half part and for the worm screw incorporating section received to worm screw 8b
47 are integrally formed.Accordingly, it is considered to the wall thickness of worm screw incorporating section 47 and determine front side flange part 28a axial direction on thickness
T28a.In addition to the part being integrally formed with worm screw incorporating section 47, the outside dimension of front side flange part 28a is permanent in a circumferential direction
It is fixed.The outside diameter chimeric surface being made up of front side cylinder face part 20a and front side convex portion 27 is formed with the inner peripheral surface of front side tube part 25b
Portion 20a.That is, front side flange part 28a is equivalent to the first flange part, the trailing flank and front side tube part 25b of front side flange part 28a
Rear end face equivalent to the first fixed engagement face.
The rear side housing member 18e for constituting housing 3f is made up of synthetic resin, leading section of housing member 18e on rear side of this
The rear side tube part 30c of cylindrical shape is provided with, in the portion of part to front-end edge near front end of the outer peripheral face of the rear side tube part 30c
Divide and be formed with the chimeric face 19a of the internal side diameter being made up of rear side cylinder face part 31 and rear side recess 32.In the outer of rear side tube part 30c
The rear flange portion 33a for being formed in part with annular shape that the rear side of face 19a chimeric with internal side diameter is adjacent in side face, the rear side is convex
Edge 33a is protruding outside throughout complete cycle geocentric vertical.The rear flange portion 33a is equivalent to the second flange part.Rear flange portion 33a
Outside dimension be set to in the flange part 28a of front side except with worm screw incorporating section 47 be integrally formed part in addition to part external diameter
It is equivalently-sized, and be set to throughout constant, the thickness T on axial direction in complete cycle ground33aIt is set in the axial direction with front side flange part 28a
Thickness T28aIdentical (T28a=T33a), and be set to identical throughout complete cycle ground.The leading flank of rear flange portion 33a is present in
From the imaginary plane that the central shaft of rear side tube part 30c passes through.That is, the leading flank of rear flange portion 33a is fixed equivalent to second
Composition surface.Thickness T in the axial direction of rear flange portion 33a33aAnd the thickness in the axial direction of front side flange part 28a
T28aFor 3mm～8mm or so.
The electric type power steering device of this example causes the chimeric face 20a of outside diameter face 19as chimeric with internal side diameter to be fitted together to,
And the leading flank of the rear end face by the trailing flank to front side flange part 28a and front side tube part 25b and rear flange portion 33a
It is fixed engagement and is combined front side housing member 17c with rear side housing member 18e, thus constitutes housing 3f.Outside causing
In the state of the chimeric face 20a in footpath side face 19a chimeric with internal side diameter is chimeric, the front side barrel surface of the chimeric face 20a of outside diameter
The rear side cylinder face part 31 of the face 19a chimeric with internal side diameter of portion 26 is seamlessly carried out based on the chimeric of barrel surface, and external diameter
The rear side recess 32 of the face 19a chimeric with internal side diameter of front side convex portion 27 of the chimeric face 20a in side seamlessly carry out it is concavo-convex be fitted together to,
Thus concavo-convex fitting portion 45 is constituted.
Cause front side housing member 17c front side flange part 28a trailing flank and front side tube part 25b rear end face with
In the state of the leading flank of the rear flange portion 33a of rear flange component 18e is abutted throughout complete cycle, by welding or bonding
Engagement is fixed to the part of the abutting, fixed engagement portion 48 is consequently formed.Fixed engagement portion 48 is being formed by welding
In the case of, can for example adopt laser welding.Specifically, before the front side tube part 25 for causing front side housing member 17c
The rear end face of the trailing flank of side flange portion 28a and front side tube part 25b is with the rear flange portion 33a's of rear side housing member 18e
In the state of leading flank is abutted, the trailing flank of leading flank or rear flange portion 33a to front side flange part 28a is throughout complete cycle ground
Irradiating laser.Then, the rear end face of the trailing flank of the front side flange part 28a of front side housing member 17c and front side tube part 25b with
A part for the leading flank of the rear flange portion 33a of rear side housing member 18e is melted respectively and mixed, and is then connect because of solidification
Close.In the case of using laser welding, if the position of irradiating laser is set to into the leading flank or rear side of front side flange part 28a
The radial direction central authorities of the trailing flank of flange part 33a neighbouring parts, then can make fixed engagement portion 48 (puddle) radially
Position is located between front side flange part 28a and the radial outer end edge and radial inner end edge of rear flange portion 33a.In the feelings of this example
Under condition, by the thickness T in the axial direction of front side flange part 28a28aBe set to it is constant throughout complete cycle ground, and by rear flange portion
Thickness T in the axial direction of 33a33aBe set to throughout complete cycle ground it is constant, therefore, fixed engagement is being formed by laser welding
In the case of portion 48, the state in the fixed engagement portion 48 can be made constant (uniform) throughout complete cycle ground.Particularly in the feelings of this example
Under condition, due to by the thickness T in the axial direction of front side flange part 28a28aWith the thickness gauge in the axial direction of rear flange portion 33a
Very little T33aBe set to it is identical, therefore, when laser welding is carried out, can be made by front side flange part 28a and rear flange portion 33a
The heat identical (or roughly the same) for distributing.As a result, trailing flank and the rear flange portion of front side flange part 28a can be made
The melting amount of the leading flank of 33a becomes uniformly (generally uniform), can make the fixed engagement state in fixed engagement portion 48 throughout whole
All ground is uniform (generally uniform).Additionally, welding process is not limited to laser welding, for example, can adopt high frequency welding, ultrasound
The various welding process such as ripple welding, sensing welding, vibration welded.
In any case, all fixed engagement portion 48 is arranged on into the combination of front side housing member 17c and rear side housing member 18e
The space outerpace side of housing 3f is leaned in portion relative to concavo-convex fitting portion 45.Additionally, in this example, in front side housing member 17c with
Bolt is not used in the combination of rear side housing member 18e.However, it is possible to so that nut is screwed togather and then is anchored on from convex in front side
The bolt of the through hole insert that the part that edge 28a and rear flange portion 33a is mutually matched is formed, thus by front side housing member
17c is combined with rear side housing member 18e.
So, in the electric type power steering device of this example, relative to concavo-convex fitting portion 45 the outer of housing 3f is being located at
The position of portion space side, the trailing flank to the front side flange part 28a of front side housing member 17c and front side by welding or bonding
The rear end face of cylinder portion 25b is fixed with the leading flank of the rear flange portion 33a of rear flange component 18e and engages and form fixation
Junction surface 48.Therefore, it is possible to realize the overall sealing in the joint portion of front side housing member 17c and rear side housing member 18e with
And the further raising of bond strength such that it is able to the oil leakage being more reliably prevented from housing 3f goes out.Other structures and work
It is identical with the 1st of aforesaid embodiment the with, effect.
Additionally, in this example, by the thickness T in the axial direction of front side flange part 28a28aWith the axle of rear flange portion 33a
Thickness T upwards33aBe set to it is identical throughout complete cycle ground, but according to the difference of the situation in terms of construction, front side flange part 28a
A part, for example specifically with worm screw incorporating section 47 be integrally formed part, cannot be formed as sometimes and front side flange
Thickness identical size in the axial direction of the other parts in portion 28a.Even if in this case, if front side can be made convex
Thickness T in the axial direction of the lower half (lower half in Figure 12) in the 28a of edge28aWith the lower half in rear flange portion 33a
Thickness T in the axial direction in portion33aIt is identical, it becomes possible to which that making the fixed engagement state in the fixed engagement portion 48 of the part becomes equal
Even (generally uniform).As a result, sealing and the raising of bond strength of the part that oil collects can be realized.
In addition it is possible to be made up of front side housing member 17c and rear side housing member 18e different materials.By difference
Material constitute front side housing member 17c and rear side housing member 18e in the case of, can make front side flange part 28a axial direction
On thickness and rear flange portion 33a axial direction on thickness according to by front side flange part 28a and rear flange
Heat that portion 33a is distributed and it is different.
In addition, in this example, due to the flange part 28a on front side of the housing member 17c formation of front side and in rear side housing member
18e formed rear flange portion 33a, therefore the past side flange portion 28a front surface or rear flange portion 33a trailing flank appoint
Meaning position can irradiating laser.But it is also possible to not in front side housing member setting flange part (before as shown in Fig. 1～Fig. 5
Side body component 18a is constituted like that), and formed from the rear side surface irradiation laser in the rear flange portion for constituting rear side housing member
Fixed engagement portion.
Additionally it is possible to form fixed engagement portion 48 by bonding.Fixed engagement portion 48 is being formed by bonding
In the case of, for example, bonding agent is coated on the trailing flank and front side tube part of the front side flange part 28a of front side housing member 17c
Carry out bonding between the rear end face of 25b and the leading flank of the rear flange portion 33a of rear side housing member 18e.As being used
Bonding agent, such as on front side of composition the resin material of housing member 17c or rear side housing member 18e be poly terephthalic acid second
In the case of diol ester (resin comprising the reinforcing fibers such as glass fibre are mixed with), propylene class bonding agent is preferably used.In structure
Resin material into front side housing member 17c or rear side housing member 18e is phenolic resin or polyphenylene sulfide (bag
Resin containing the reinforcing fibers such as glass fibre are mixed with) in the case of, preferably use epoxiess bonding agent.The bonding agent for being used
Be not limited to above-mentioned bonding agent, can according to constitute front side housing member 17c and rear side housing member 18e material it
Between relation and properly select.Even if in addition, in the case where fixed engagement portion is arranged by bonding, it is also possible to not front
Side body component arranges flange part (constituting the front side housing member 18a as shown in Fig. 1～Fig. 5), but to constituting front side
The rear end face of the front side tube part of housing member is carried out bonding and set with the leading flank in the rear flange portion for constituting rear side housing member
Put fixed engagement portion.
[the 6th of embodiment]
Figure 14 represents the 6th of embodiment of the present utility model.The housing 3g of this example possesses the 3rd of embodiment
The construction of the tectonic association involved by the 5th of involved construction and embodiment.The housing member 17d on front side of composition
The inner peripheral surface of front side tube part 25c be formed with the chimeric face 20b of outside diameter, be fitted together to the first half in face 20b in the outside diameter
Form the front side recess 41 of oriented radial outside depression.It is formed with throughout complete cycle in the rearward end outer peripheral face of front side tube part 25c
The circular front side flange part 28a prominent to radial outside.The rear side tube part 30d's of housing member 18f is outer on rear side of composition
The part near front end of side face is formed in part with the chimeric face 19b of internal side diameter to front-end edge, in the chimeric face of the internal side diameter
First half in 19b forms the rear side convex portion 42 that oriented radial outside is projected.With internal side diameter in the outer peripheral face of rear side tube part 30d
The adjacent part of the rear side of face 19b is fitted together to, the circular rear flange that oriented radial outside is projected is formed throughout complete cycle
Portion 33a.
In the state of after front side housing member 17d is combined with rear side housing member 18f, by make front side recess 41 with
Rear side convex portion 42 seamlessly carries out concavo-convex chimeric and constitutes concavo-convex fitting portion 45a, and by welding or bonding to front side
The rear end face of the trailing flank of flange part 28a and front side tube part 25c be fixed with the leading flank of rear flange portion 33a engage and
Form fixed engagement portion 48.The of the structure and effect of other parts, the 3rd of effect and embodiment the and embodiment
5 identical.
[the 7th of embodiment]
Figure 15 represents the 7th of embodiment of the present utility model.The housing 3h of this example possesses the 4th of embodiment
The construction of the tectonic association involved by the 5th of involved construction and embodiment.The housing member 18g on rear side of composition
Rear side tube part 30e outer peripheral face in it is adjacent with the rear side of rear side cylinder face part 31b be formed in part with fastening groove 43, the locking
Groove 43 is recessed relative to rear side cylinder face part 31b to radially inner side.Section is rounded or o-ring of ellipsoidal cross section shape
44 lockings (outer) are in the fastening groove 43.In the state of after front side housing member 17d is combined with rear side housing member 18g,
The bottom that o-ring is flexibly clamped in fastening groove 43 and the inner peripheral surface of the front side tube part 25c for constituting front side housing member 17d
In between the part adjacent with the rear side of front side cylinder face part 26a, and by welding or bonding to front side flange part 28a after
The rear end face of side and front side tube part 25c is fixed with the leading flank of rear flange portion 33a and engages and form fixed engagement
Portion 48.The structure of other parts and effect, effect are identical with the 5th of the 4th of embodiment the and embodiment.
Description of reference numerals
1 steering wheel
2nd, 2a, 2b steering spindle
3rd, 3a～3h housings
4th, 4a, 4b worm gear
5 worm tooths
6 worm shafts
7 electro-motors
8th, 8a, 8b worm screw
9a～9d rolling bearings
10th, 10a output shafts
11a～11d rolling bearings
12nd, 12a torsion bars
13rd, 13a torque sensors
14a, 14b universal joint
15 jackshafts
16 tooth sector units
17th, 17a～17d front sides housing member
18th, 18a～18f rear sides housing member
19th, the chimeric face of 19a～19c internal side diameters
20th, the chimeric face of 20a, 20b outside diameter
21 bolts
22 o-rings
23 worm reducers
24 input shafts
25th, side tube part before 25a～25c
26th, 26a front sides cylinder face part
27th, 27a, 27b front side convex portion
28 front side flange parts
29 bolts
30th, side tube part after 30a, 30b
31st, 31a, 31b rear side cylinder face part
32nd, 32a, 32b rear side recess
33 rear flange portions
34th, 34a rear sides path flange part
The big footpath flange part of 35 rear sides
36 intermediate plates
37 intercommunicating pores
38 wire harness
39 adapters
40 plugs
41 front side recesses
42 rear side convex portions
43 fastening grooves
44 o-rings
45th, the concavo-convex fitting portions of 45a
46 support meet portion
47 worm screw incorporating sections
48 fixed engagement portions
Claims (12)
1. a kind of electric type power steering device housing, to the deceleration for increasing the auxiliary power produced by electro-motor
Device is received, and the electric type power steering device housing is characterised by,
The electric type power steering device housing possesses the first housing member, the second housing member and concavo-convex fitting portion,
First housing member has：First portion；And outside diameter is chimeric facial, the chimeric face of the outside diameter is arranged at
The inner peripheral surface in first portion,
Second housing member has：Second portion；And internal side diameter is chimeric facial, the chimeric face of the internal side diameter is arranged at
The outer peripheral face in second portion and the chimeric face of the outside diameter is embedded in,
The concavo-convex fitting portion is constituted by making convex portion and recess concavo-convex chimeric, and the convex portion is with diametrically prominent state
It is formed in the outside diameter to be fitted together in the chimeric face of facial and described internal side diameter on the chimeric face of a side, the recess is with footpath
The state being recessed upwards is formed in the chimeric face that the outside diameter is fitted together to the opposing party in the chimeric face of facial and described internal side diameter
On,
The housing member of at least one party is made up of synthetic resin in first housing member and second housing member.
2. electric type power steering device housing according to claim 1, it is characterised in that the section shape of the convex portion
Shape is arc-shaped, and the cross sectional shape of the recess is arc-shaped.
3. electric type power steering device housing according to claim 2, it is characterised in that the section shape of the convex portion
Radius of curvature involved by shape is different with the radius of curvature involved by the cross sectional shape of the recess.
4. electric type power steering device housing according to claim 1, it is characterised in that
Second housing member also has flange part, and the flange part is formed in described with the state prominent to radial outside
In the outer peripheral face in second portion second housing member on the chimeric direction of first housing member with the internal diameter
Side is fitted together on the adjacent part of the rear side of face,
Be provided with the side of the first housing member side described in the two sides of the flange part conical surface shape to meeting portion,
It is described to meet portion more tend to radial outside then more to the first housing member side incline,
Make it is described support to meet portion and support with the end face of first housing member touch.
5. electric type power steering device housing according to claim 1, it is characterised in that
Fixed engagement portion is also equipped with,
The fixed engagement portion makes to be formed at the first fixed engagement face of first housing member and is being formed at described second
In the state of second fixed engagement face of housing member abuts, by welding or bonding to the first fixed engagement face with it is described
Second fixed engagement face is fixed engagement and constitutes,
The fixed engagement portion is relative to the externally-located space side of the concavo-convex fitting portion.
6. electric type power steering device housing according to claim 5, it is characterised in that
First housing member also has the first flange part, first flange part shape with the state prominent to radial outside
Into on the outer peripheral face in first portion,
Second housing member also has the second flange part, second flange part shape with the state prominent to radial outside
Into in the outer peripheral face in second portion second housing member on the chimeric direction of first housing member with
The internal side diameter is fitted together on the adjacent part of the rear side of face,
The first fixed engagement face be first flange part two sides described in the second housing member side side,
The second fixed engagement face be second flange part two sides described in the first housing member side side.
7. electric type power steering device housing according to claim 6, it is characterised in that
Thickness in the axial direction of first flange part is constant throughout complete cycle ground,
Thickness in the axial direction of second flange part throughout complete cycle ground is constant and axial direction with first flange part on thickness
Degree is equal,
The first fixed engagement face is fixed with the second fixed engagement face by welding is engaged, it is described so as to constitute
Fixed engagement portion.
8. electric type power steering device housing according to claim 1, it is characterised in that be also equipped with flexibly clamping
The o-ring between facial face chimeric with the outside diameter is fitted together in the internal side diameter.
9. electric type power steering device housing according to claim 8, it is characterised in that
The o-ring is locked to fastening groove, and the fastening groove is formed in the chimeric face of the internal side diameter in second housing
Component to the rearward end on the chimeric direction of first housing member,
The o-ring is flexibly clamped between fastening groove face chimeric with the outside diameter.
10. electric type power steering device housing according to claim 1, it is characterised in that
The convex portion is formed in the chimeric face of one throughout complete cycle,
The recess is formed in the chimeric face of described the opposing party throughout complete cycle.
11. electric type power steering device housings according to claim 1, it is characterised in that
The convex portion is formed with one to multiple place in the circumference of the chimeric face of one,
The recess is formed with one to multiple place in the circumference of the chimeric face of described the opposing party.
12. electric type power steering device housings according to claim 1, it is characterised in that the convex portion is formed at
Plastic housing member.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014237698 | 2014-11-25 | ||
| JP2014-237698 | 2014-11-25 | ||
| JP2014239741 | 2014-11-27 | ||
| JP2014-239741 | 2014-11-27 | ||
| PCT/JP2015/082292 WO2016084659A1 (en) | 2014-11-25 | 2015-11-17 | Housing for electric power steering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206125141U true CN206125141U (en) | 2017-04-26 |
Family
ID=56074226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201590000331.3U Active CN206125141U (en) | 2014-11-25 | 2015-11-17 | Electrodynamic type power steering casing for device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6332469B2 (en) |
| CN (1) | CN206125141U (en) |
| WO (1) | WO2016084659A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117980631A (en) * | 2021-10-25 | 2024-05-03 | 恩斯克转向及控制公司 | Gear box and electric auxiliary device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018002026A (en) * | 2016-07-05 | 2018-01-11 | 株式会社ジェイテクト | Electric power steering device |
| EP3705375B1 (en) | 2017-10-30 | 2022-08-24 | NSK Ltd. | Gear housing for electric power steering device, manufacturing method thereof, and electric power steering device |
| WO2019139060A1 (en) | 2018-01-15 | 2019-07-18 | 日本精工株式会社 | Gear housing for electric power steering device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3604585A (en) * | 1969-05-07 | 1971-09-14 | Edward J Towns | Container and safety closure seal therefor |
| JPS56144759U (en) * | 1980-03-29 | 1981-10-31 | ||
| JP2009298246A (en) * | 2008-06-11 | 2009-12-24 | Jtekt Corp | Electric power steering device |
| JP5163626B2 (en) * | 2009-11-02 | 2013-03-13 | 日本精工株式会社 | Electric power steering device |
| JP2012020647A (en) * | 2010-07-14 | 2012-02-02 | Jtekt Corp | Electric power steering device |
| JP2013119284A (en) * | 2011-12-06 | 2013-06-17 | Jtekt Corp | Electric power steering device |
| JP5947146B2 (en) * | 2012-08-09 | 2016-07-06 | 株式会社アイエイアイ | Actuator and manufacturing method of actuator |
| JP2014193697A (en) * | 2013-03-29 | 2014-10-09 | Showa Corp | Steering device |
-
2015
- 2015-11-17 WO PCT/JP2015/082292 patent/WO2016084659A1/en active Application Filing
- 2015-11-17 JP JP2016561514A patent/JP6332469B2/en active Active
- 2015-11-17 CN CN201590000331.3U patent/CN206125141U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117980631A (en) * | 2021-10-25 | 2024-05-03 | 恩斯克转向及控制公司 | Gear box and electric auxiliary device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6332469B2 (en) | 2018-05-30 |
| WO2016084659A1 (en) | 2016-06-02 |
| JPWO2016084659A1 (en) | 2017-04-27 |
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