CN207018337U - A kind of input shaft top combination with precision positioning circle - Google Patents
A kind of input shaft top combination with precision positioning circle Download PDFInfo
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- CN207018337U CN207018337U CN201720725770.1U CN201720725770U CN207018337U CN 207018337 U CN207018337 U CN 207018337U CN 201720725770 U CN201720725770 U CN 201720725770U CN 207018337 U CN207018337 U CN 207018337U
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- precision positioning
- input shaft
- positioning circle
- circle
- spline
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Abstract
The utility model provides a kind of input shaft top combination with precision positioning circle, including input shaft weld assembly, precision positioning circle, lock tube, wherein input shaft weld assembly is welded to form by spline housing and splined shaft, precision positioning circle leans on the elastic force of itself radially fixed in the annular groove of input shaft, lock tube is interference fitted with precision positioning circle, frictionally fastening force itself will be fixed on precision positioning circle, with Overload torque defencive function, to reach anti-theft effect, and assembling is simple, part for ease of maintenaince and renewal, simultaneously, precision positioning circle also has reduction vibrations concurrently, mitigate noise and avoid the effect of resonance band.
Description
Technical field
It the utility model is related to motorcar electric steering transmission linkage technical field, more particularly to it is a kind of with precision positioning circle
Combine on input shaft top.
Background technology
At present, in motorcar electric steering transmission linkage technical field, most commonly used is exactly pipe column type electric power-assisted steering,
Wherein critical component input shaft, the important function for transmitting steering torque is carry, directly influence the safety of steering transmission linkage
Performance, is produced now for the input shaft of electric powered steering transmission device, is typically all through cold extrusion or rotation with seamless steel pipe at present
Forging process makes shaping, and is finishing outer bowlder, it has to be noted that controls the position relationship radially with axial direction, ensures minimum book
Wall thickness, especially in smallest cross-sectional（Screw thread or spline）At reducing, otherwise, in the presence of rated load, input shaft is minimum to be cut
Have that there may be moment of torsion fracture at the book wall of face.
The content of the invention
To solve the deficiencies in the prior art, the purpose of this utility model is to provide a kind of input shaft with precision positioning circle
Top is combined, and under being acted in rated load, situation of the fracture often at minimum hollow section occurs, we will be overall
Seamless steel pipe input shaft is changed to welding structure form, and small bore hollow pipe column is welded using solid round steel and heavy in section hollow pipe column
It is integral, it can so ignore the status requirement of radial direction and axial direction substantially in the outer bowlder of finishing, smallest cross-sectional book will not be produced
The problem of wall difference, potential safety hazard is eliminated, ensure that the safe and reliable performance of input shaft, while changed in the past usual
Lock tube and the welding procedure of input axis connection, lock tube and input shaft are fixed by friction fastening power caused by precision positioning circle,
Overload torque protection is provided, reaches anti-theft effect, its is reasonable in design, simple in construction, easily manufactured, installation is reliable.
In order to realize above-mentioned target, the utility model adopts the following technical scheme that：
A kind of input shaft top combination with precision positioning circle, including：Input shaft weld assembly, precision positioning circle, lock tube,
The input shaft weld assembly includes spline housing, splined shaft, and the splined shaft with spline housing by being weldingly connected, consolidate by the lock tube
It is scheduled on precision positioning circle, and is interference fitted between precision positioning circle, described spline housing is divided into the center of circle and is located at always
Be internal spline structure on the inside of small sleeve on line and size two parts sleeve that diameter is different, big sleeve inner side is unthreaded hole structure, and
And the diameter of big sleeve is more than the diameter of small sleeve, the cylindrical weld seam angle that is provided with 45 ° of the big sleeve away from small sleeve side is described
The both ends inner circle of spline housing is equipped with cone angle in 60 °, and one end is provided with the interference between unthreaded hole and matched somebody with somebody described splined shaft before welding
The protrusion cylinder of conjunction, and protrude cylindrical outer surface and be provided with serration spline, the home position of described protrusion cylinder is set
There is centre bore, described splined shaft is provided with 45 ° of weld seam angles, the insertion of boss cylinder positioned at the stop portion of protrusion cylindrical member at one end
Unthreaded hole inside simultaneously carries out welding processing, and after welding processing, one end of input shaft weld assembly splined shaft is provided with the conical surface, screw thread and flower
Key, described screw thread are located at the end of splined shaft, spline are provided between described screw thread and the conical surface, and spline is connection tooth knot
Structure, described splined shaft is provided with bearing rib with spline housing junction, and the both sides of bearing rib are equipped with jump-ring slot, described flower
The outer surface of key set unthreaded hole is provided with annular groove, and the side of annular groove is provided with aperture, described precision positioning circle axial restraint
In on annular groove.
Further, spline housing is the spline housing that shaping is made of seamless steel pipe, and described splined shaft is filled circles steel
The splined shaft made.
Further, the shape of annular groove, width are identical with precision positioning circle.
Further, lock tube is the coaxial hollow-core construction of inside and outside circle, it is cylindrical on be evenly equipped with some identical rectangular channels, endoporus
Both sides are provided with pilot angle.
Further, gap coordinates between lock tube and input shaft outer surface, and the mistake between precision positioning circle outer surface
It is full of cooperation, the both ends of lock tube inner circle are equipped with chamfering.
Further, it is parallel to each other between each rectangular channel of lock tube, and the distance between each rectangular channel all same.
Further, precision positioning circle is that the disconnection of circumference side can carry out elastically-deformable hollow cylindrical structure, and
Interior circular diameter is less than the diameter of annular groove, and the width of the height of precision positioning circle and annular groove under precision positioning circle relaxed state
It is identical.
Further, precision positioning circle outer surface be provided with two row be parallel to each other shape size all same semi-cylindrical it is convex
Platform, and the boss between two row is mutually gone together, the distance between each boss of same column is equal.
It is of the present utility model to be beneficial in that：
1）Input shaft is avoided minimum hollow section under nominal torque effect using spline housing and splined shaft weld assembly
The possibility being broken at face because producing book wall, eliminates potential potential safety hazard, it is ensured that the reliable usability of input shaft
Energy；
2）Connected by precision positioning circle between lock tube and input shaft, by friction fastening power secure fit part, had
Torsion protection function is carried, reaches anti-theft effect, and is assembled simply, part is easy to maintain and updates.
3）Precision positioning circle has the function that to reduce vibrations, mitigates noise and avoid resonance band.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of input shaft weld assembly of the present utility model；
Fig. 3 is the top view of the utility model input shaft weld assembly；
Fig. 4 is the profile at the utility model input shaft weld assembly top view B-B；
Fig. 5 is the structural representation before the welding of the utility model input shaft weld assembly spline housing；
Fig. 6 is the structural representation before the welding of the utility model input shaft weld assembly splined shaft；
Fig. 7 is the structural representation of the utility model lock tube；
Fig. 8 is the sectional view at the utility model lock tube structural representation A-A；
Fig. 9 is the structural representation after the stretching of the utility model precision positioning circle；
Figure 10 is the sectional view at the utility model precision positioning coil structures schematic diagram Y-Y；
The implication of reference in figure：
1 it is lock tube, 2 be precision positioning circle, 3 be input shaft weld assembly, 4 be spline housing, 5 be splined shaft, 6 is the conical surface, 7
For screw thread, 8 be spline, 9 be protrusion cylinder.
Embodiment
The utility model is further described and illustrated with reference to embodiment and accompanying drawing, but is not limited in any form
The system present invention.
Embodiment 1
A kind of input shaft top combination with precision positioning circle, as shown in figure 1, including lock tube 1, precision positioning circle 2, input
Axle weld assembly 3, the precision positioning circle 2 are that the disconnection of circumference side can carry out elastically-deformable hollow cylindrical structure, are relied on
The elastic force of ring spring is radially fixed in the annular groove of input shaft weld assembly 3, and the lock tube 1 passes through precision positioning circle 2
Caused friction fastening power is fixed on precision positioning circle 2.
In the utility model, input shaft is changed to by hollow spline housing 4 and solid splined shaft 5 by integral hollow pipe axle
The weld assembly of composition, as shown in figure 5, welding preceding figure for spline housing 4, left side is internal spline structure, and right side is unthreaded hole structure, and
And both ends are equipped with 60 ° of interior cone angle, the cylindrical place of unthreaded hole is provided with 45 ° of weld seam angle；As shown in fig. 6, show before weldering for splined shaft 5
It is intended to, generally solid light circle structure, light circle external diameter is identical with the outside diameter of the unthreaded hole one end of spline housing 4, and left end is provided with boss
Cylinder 9, the outer surface of boss cylinder 9 are provided with serration spline, and the connection side with the unthreaded hole of spline housing 4 using interference fit
Formula, the 5 cylindrical stop portion of splined shaft positioned at protrusion cylinder 9 one end are provided with 45 ° of weld seam angles, protrude the home position of cylinder 9
Provided with centre bore；As shown in Fig. 2-4, after welding, on the basis of internal spline, cylindrical, the right side of processing input shaft weld assembly 3
Provided with the conical surface 6, screw thread 7 and spline 8, and spline 8 is to join tooth spline, steering wheel inner cone and hypodontia spline phase with subsequent installation
Matching, the right side of spline 8 are provided with screw thread 7, and the left side of the conical surface 6 is provided with bearing rib, and bearing rib both sides are equipped with jump-ring slot, input shaft welding
The cylindrical of the middle part spline housing 4 of component 2 is provided with annular groove, and groove footpath, groove width and precision positioning circle 2 match, in annular
The side connection tooth splined central side bus of groove is provided with aperture.
Lock tube 1 is the coaxial hollow sleeve of inside and outside circle, and it is that gap coordinates that endoporus is cylindrical with input shaft weld assembly 3, with precision
The outer surface of centring ring 2 for interference fit, the both ends of endoporus are equipped with pilot angle, convenient for assembly, it is cylindrical on be evenly distributed with eight
The through-type rectangular channel of identical.
A kind of actually ring spring of precision positioning circle 2, it is specifically used to fasten two cylindrical parts, it uses high intensity book wall
Steel spring plate makes through cold stamping to be shaped, and precision positioning circle 2 is wide identical with the annular groove width on input shaft weld assembly 3, accurate
The row identical semi-cylindrical boss of two row 19, semi-cylindrical boss peak and the endoporus of lock tube 1 are evenly equipped with centring ring 2 is cylindrical
Interference fit is formed, its mounting condition must is fulfilled for：Lock tube 1 is fixed in friction fastening power and inputs the relative position of shaft assembly 3
Afterwards, precision positioning circle 2 must be maintained still in circumferencial direction disconnects space.
Shaft assembly 3 is inputted using spline housing 4 and the weld assembly of splined shaft 5 substitution clean steel pipe drip molding, entirely eliminated
The possibility of moment of torsion fracture is produced at the smallest cross-sectional of the lower input shaft weld assembly 3 of rated load effect, input shaft weld assembly 3
Safe application performance has obtained Reliable guarantee, and the combination of lock tube 1 and input shaft weld assembly 3 does not need welding structure, and precision is determined
The protective effect that position circle 2 can play Overload torque, reach anti-theft effect, and assemble it is simple, part for ease of maintenaince and renewal,
The effect that precision positioning circle 2, which also has concurrently, to be reduced vibrations, mitigate noise and avoid resonance band simultaneously.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second " be only used for describe purpose, and it is not intended that instruction or
Imply relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
General principle, principal character and advantage of the present utility model has been shown and described above.The technical staff of the industry
It should be appreciated that above-described embodiment does not limit the utility model in any form, it is all by the way of equivalent substitution or equivalent transformation
The technical scheme obtained, all falls within the scope of protection of the utility model.
Claims (8)
- A kind of 1. input shaft top combination with precision positioning circle, it is characterised in that：Including lock tube（1）, precision positioning circle（2）、 Input shaft weld assembly（3）, the input shaft weld assembly includes spline housing（4）, splined shaft（5）, the splined shaft（5）With flower Key set（4）By being weldingly connected, the lock tube（1）It is fixed on precision positioning circle（2）On, and with precision positioning circle（2）Between Interference fit, described spline housing（4）It is divided into size two parts sleeve that the center of circle is located along the same line and diameter is different, small set Cylinder inner side is internal spline structure, is unthreaded hole structure on the inside of big sleeve, and the diameter of big sleeve is more than the diameter of small sleeve, big set The cylindrical weld seam angle that is provided with 45 ° of the cylinder away from small sleeve side, the spline housing（4）Both ends inner circle be equipped with cone angle in 60 °, Described splined shaft（5）One end is provided with the protrusion cylinder being interference fitted between unthreaded hole before welding（9）, and protrude cylinder Body（9）Outer surface is provided with serration spline, described protrusion cylinder（9）Home position be provided with centre bore, and positioned at protrusion Cylinder（9）One end splined shaft（5）Cylindrical stop portion be provided with 45 ° of weld seam angles, boss cylinder（9）Insert inside unthreaded hole simultaneously Carry out welding processing, after welding processing, input shaft weld assembly（3）Splined shaft（5）One end be provided with the conical surface（6）, screw thread（7）With Spline（8）, described screw thread（7）Positioned at splined shaft（5）End, described screw thread（7）With the conical surface（6）Between be provided with spline （8）, and spline（8）To join toothing, described splined shaft（5）With spline housing（4）Junction is provided with bearing rib, and bearing The both sides of gear are equipped with jump-ring slot, described spline housing（4）The outer surface of unthreaded hole is machined with annular groove, and the side of annular groove Provided with aperture, described precision positioning circle（2）It is axially fixed on annular groove.
- A kind of 2. input shaft top combination with precision positioning circle according to claim 1, it is characterised in that described flower Key set（4）To make the spline housing of shaping of seamless steel pipe（4）, described splined shaft（5）For the splined shaft of filled circles steel making （5）.
- A kind of 3. input shaft top combination with precision positioning circle according to claim 1, it is characterised in that described ring Shape groove and precision positioning circle（2）Shape, width all same.
- A kind of 4. input shaft top combination with precision positioning circle according to claim 1, it is characterised in that described lock Set（1）For the coaxial hollow-core construction of inside and outside circle, it is cylindrical on be evenly equipped with some identical rectangular channels.
- A kind of 5. input shaft top combination with precision positioning circle according to claim 1, it is characterised in that described lock Set（1）With input shaft weld assembly（3）Between outer surface for gap coordinate, and with precision positioning circle（2）It is between outer surface Interference fit, lock tube（1）The both ends of inner circle are equipped with chamfering.
- A kind of 6. input shaft top combination with precision positioning circle according to claim 4, it is characterised in that described lock Set（1）Each rectangular channel between parallel to each other, and the distance between each rectangular channel all same.
- A kind of 7. input shaft top combination with precision positioning circle according to claim 1, it is characterised in that described essence Close centring ring（2）Elastically-deformable hollow cylindrical structure, and precision positioning circle can be carried out by being disconnected for circumference side（2）Relaxation Interior circular diameter is less than the diameter of annular groove, and precision positioning circle under state（2）Height it is identical with the width of annular groove.
- A kind of 8. input shaft top combination with precision positioning circle according to claim 1, it is characterised in that described essence Close centring ring（2）Outer surface is provided with the two semi-cylindrical boss for arranging the shape size all same that is parallel to each other, and convex between two row Platform is mutually gone together, and the distance between each boss of same column is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720725770.1U CN207018337U (en) | 2017-06-21 | 2017-06-21 | A kind of input shaft top combination with precision positioning circle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720725770.1U CN207018337U (en) | 2017-06-21 | 2017-06-21 | A kind of input shaft top combination with precision positioning circle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207018337U true CN207018337U (en) | 2018-02-16 |
Family
ID=61486484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720725770.1U Active CN207018337U (en) | 2017-06-21 | 2017-06-21 | A kind of input shaft top combination with precision positioning circle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207018337U (en) |
-
2017
- 2017-06-21 CN CN201720725770.1U patent/CN207018337U/en active Active
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