CN208978945U - A kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel - Google Patents
A kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel Download PDFInfo
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- CN208978945U CN208978945U CN201821364792.0U CN201821364792U CN208978945U CN 208978945 U CN208978945 U CN 208978945U CN 201821364792 U CN201821364792 U CN 201821364792U CN 208978945 U CN208978945 U CN 208978945U
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- damping wheel
- unidirectional damping
- steering
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Abstract
The utility model relates to car steering tube column technical fields, specifically a kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel, the upper end external splines of the small assembly of steering shaft can be connect with steering wheel, the lower end internal spline of the small assembly of steering shaft is then connected with output shaft, the middle section of the small assembly of steering shaft is set in upper prop pipe using bearing, the lower end inner wall of upper column tube then wraps the cylindrical outer wall of the small assembly of lower column tube, position rack on upper column tube close to lower end is equipped with mounting bracket, one end interference of handle and screw rod connects, the other end of screw rod passes through the front and back regulating tank of upper column tube, the up and down adjustment slot of mounting bracket, unidirectional damping wheel, needle bearing is matched with nut；The surface ipsilateral with unidirectional damping wheel is welded with rack gear in mounting bracket, rotation can be intermeshed between unidirectional damping wheel, the utility model structure is simple, using unidirectional damping wheel instead of heterotypic spring, assembly and production greatly are optimized, and additional retentivity can be provided.
Description
Technical field
The utility model relates to car steering tube column technical field, specifically a kind of automobile based on unidirectional damping wheel
Steering column radial equilibrium mechanism.
Background technique
Steering column belongs to the subsystem of automobile steering system, and major function includes direction of transfer disk torque and corner, tune
The functions such as steering wheel position, antitheft, crumple energy-absorbing, connection wiring harness, connection vehicle beam, connection shield, connection stacked switch are saved,
And the function of the adjusting steering wheel position of steering column can be divided into steering wheel up and down adjustment and front and back and adjust two functions, when driving
The person of sailing adjusts steering wheel to after position needed for it, and the locking device needs of steering column are locked and kept to the position.
Steering column supplier needs to improve steering column performance, to meet current consumer's comfort higher and higher to car steering
It is required that.After the locking device of steering column unclamps, steering column can carry out up and down adjustment, steering column radial equilibrium mechanism
Need to guarantee that steering column is not fallen down, steering column up and down adjustment is smooth and comfortable feel, steering column is adjusted to upper and lower
Limit point hits sense without obvious.Requirement of the general automobile main frame maker to steering column equilbrium position is, when steering column clamping machine
Structure unclamp when, steering wheel can not free fall, and be able to maintain up and down adjustment middle position or more than position.
The balance of spiral tension spring or special-shaped torsional spring as steering column is mainly used in existing common steering column structure
Mechanism, and design the soft limit of individual plastics and adjust terminal impact noise to reduce.After the locking device locking of steering column,
The locking device needs of steering column are locked and are kept to the position, are provided direction and are sat with crossing two legs enough retentivities.It is existing flat
The design of weighing apparatus mechanism can not provide retentivity, only play the role of holding up steering wheel.There is space in two kinds of spring solutions
The disadvantages of difficult arrangement, part are difficult to install and steering wheel up and down adjustment feel is poor.
One kind is designed thus to occupy little space, is more easy to install, adjusting that feeling is better, and can provide the steering of additional retentivity
Tubing string radial equilibrium mechanism be very it is necessary to.
Summary of the invention
The utility model breaks through the problem of the prior art, devises one kind and occupies little space, is more easy to install, adjusting feel more
It is good, and the steering column radial equilibrium mechanism of additional retentivity can be provided.
In order to achieve the above object, it is radial to devise a kind of car steering tube column based on unidirectional damping wheel for the utility model
Balance mechanism, including the small assembly of steering shaft, upper column tube, handle, mounting bracket, the small assembly of lower column tube, it is characterised in that: described turn
It can be connect to the upper end external splines of the small assembly of axis with steering wheel, the lower end internal spline of the small assembly of steering shaft is then connected with output shaft
It connects, the middle section of the small assembly of steering shaft is set in upper prop pipe using bearing, and the lower end inner wall of the upper column tube then wraps
The cylindrical outer wall of the small assembly of lower column tube is wrapped, the position rack of close lower end is equipped with mounting bracket, handle and spiral shell on the upper column tube
One end interference of bar connects, and the other end of screw rod passes through the up and down adjustment slot, unidirectional of the front and back regulating tank of upper column tube, mounting bracket
Damping wheel, needle bearing are matched with nut；Screw rod is locked using nut, it is ipsilateral with unidirectional damping wheel in the mounting bracket
Surface be welded with rack gear, rotation can be intermeshed between the rack gear and unidirectional damping wheel.
The unidirectional damping wheel is mainly made of gear ring, plastic sheath, unilateral bearing, there is 24 external tooths outside the gear ring,
Gear ring inner is non-close ring there are three groove, the plastic sheath, and there are three convex ribs, the interior table of plastic sheath in the outer surface of plastic sheath
Face is smooth inner wall, and the outer ring of the unilateral bearing is smooth, cylindrical peripheral surface, and the left end face of unilateral bearing is equipped with square boss, institute
The convex ribs for stating plastic sheath are matched with the groove of gear ring, so that plastic sheath is assembled together with gear ring, the smooth inner wall of plastic sheath
It is interference fitted with the outer ring of unilateral bearing, so that the assembly of gear ring, plastic sheath, unilateral bearing is integrated.
The rack gear is mainly made of orthodont, upper limit tooth and lower limit tooth, a height of 2.25mm of the tooth of the orthodont,
The a height of 4mm of the tooth of upper limit tooth, a height of 4mm of the tooth of lower limit tooth.
Compared with prior art, structure is simple for the utility model, using unidirectional damping wheel instead of heterotypic spring, greatly
Assembly and production are optimized, and additional retentivity can be provided.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the exploded view of unidirectional damping wheel in the utility model.
Fig. 3 is unidirectional damping wheel assembling exploded view in the utility model.
Specific embodiment
The utility model is described further in conjunction with attached drawing.
Referring to Fig. 1, the utility model devises a kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel,
Including the small assembly of steering shaft, upper column tube, handle, mounting bracket, the small assembly of lower column tube, outside the upper end of the small assembly 1 of steering shaft
Spline can be connect with steering wheel, and the lower end internal spline of the small assembly 1 of steering shaft is then connected with output shaft, the upper offer of column tube 2 harness,
The interfaces such as shield, stacked switch are simultaneously attached thereto, and the middle section of the small assembly 1 of steering shaft is set in upper prop pipe using bearing
In 2, the lower end inner wall of the upper column tube 2 then wraps the cylindrical outer wall of the small assembly 3 of lower column tube, on the upper column tube 2 under
The position rack at end is equipped with mounting bracket 4, and the square set of upper 2 lower end of column tube is placed on the opening in shelves of mounting bracket 4, handle 5 with
One end interference of screw rod 6 connects, and when user's driving handle 5, can also drive 6 rotary motion of screw rod, the other end of screw rod 6 passes through
The front and back regulating tank of upper column tube 2, the up and down adjustment slot 4-1 of mounting bracket 4, unidirectional damping wheel 10, needle bearing 7 and 8 phase of nut
Cooperation；Screw rod 6 is locked using nut 8, steering wheel is made not can produce relative motion, the mounting bracket 4 with respect to vehicle beam
Upper and ipsilateral unidirectional damping wheel 10 surface is welded with rack gear 9, can be intermeshed and turn between the rack gear 9 and unidirectional damping wheel 10
Dynamic, the point of rotation P of mounting bracket 4 and the small assembly 3 of lower column tube is bolt-connected on vehicle beam；After handle 5 unclamps, on
It states all parts and is unable to free movement because being bolt-connected on vehicle beam in addition to mounting bracket 4, other parts can
Under gravity G effect, moved downward around point of rotation P.And unidirectional damping wheel 10 can then generate the spring force F opposite with gravity G, with
This movement is balanced, steering column is made to be maintained at equilibrium position.
Referring to fig. 2, in the utility model unidirectional damping wheel 10 mainly by gear ring 10-1, plastic sheath 10-2, unilateral bearing 10-
3 form, and have 24 external tooths outside the gear ring 10-1, and there are three groove, the plastic sheath 10-2 is non-envelope for the inside gear ring 10-1
There are three convex ribs in closed loop, the outer surface of plastic sheath 10-2, and the inner surface of plastic sheath 10-2 is smooth inner wall, the unilateral bearing
The outer ring of 10-3 is smooth, cylindrical peripheral surface, and the left end face of unilateral bearing 10-3 is equipped with square boss 10-3-1, and outer ring is with respect to inner ring
Torque is Tbc when rotating clockwise, and torque T ba is close to 0 when rotating counterclockwise, the convex ribs and gear ring 10-1 of the plastic sheath 10-2
Groove match so that plastic sheath 10-2 is assembled together with gear ring 10-1, the smooth inner wall and one-way shaft of plastic sheath 10-2
The outer ring interference fit for holding 10-3 is produced so that gear ring 10-1, plastic sheath 10-2, unilateral bearing 10-3 assembly are integrated by interference
The moment of torsion control can be T by adjusting convex ribs magnitude of interference by raw spin friction torque, due to the outer wall of plastic sheath 10-2 have it is convex
Muscle, inner wall smooth, so relative rotary motion occurs in inner wall.
First according to principle of moment balance, required equilibrant force F can be calculated, it is known that the gear ring 10-1 of unidirectional damping wheel 10
The tooth form radius r of upper engaging tooth can acquire torque T=F*r that unidirectional damping wheel 10 need to provide, and ordinary circumstance F is about 100N, and half
Diameter r comprehensively considers structure and arranges optional 20mm or so, then T=100*0.02=2Nm.As shown in figure 3, unidirectional damping wheel 10 is outer
Tooth is engaged with the orthodont 9-1 of rack gear 9, can produce similar gear-driven movement；The square boss 10-3- of unilateral bearing 10-3
1 is inserted into the up and down adjustment slot 4-1 of mounting bracket 4, and the rotary motion of unilateral bearing inner ring is limited.
When being adjusted up steering column, screw rod 6 can drive unidirectional damping wheel 10 to move upwards, while unilateral bearing 10-3
It rotates counterclockwise, the torque that unidirectional damping wheel 10 provides at this time is that Tba is approximately equal to 0, i.e., unidirectional damping wheel 10 is to steering column
It is adjusted up the no inhibition of movement；When adjusting steering column downwards, screw rod 6 can drive unidirectional damping wheel 10 to transport downwards
It is dynamic, while unilateral bearing 10-3 is rotated clockwise, the torque that unilateral bearing 10-3 is provided at this time is Tbc, if it is big that the value is arranged
In torque plastic sheath 10-2 driving torque T, then unidirectional damping wheel 10 can be made to generate torsion to the downward adjusting movement of steering column
The damping of square T, the value are ultimately applied on the rack gear 9 of mounting bracket 4, so that steering column keeps balancing in the vertical direction.
Due to T be definite value, as long as and generate clockwise movement tendency to damping wheel 10, which will exist, and pass
The silicone oil formula damper of system, it is necessary to it generates relative motion and just has damping and generate, cause what steering column will be slow to fall downwards,
The utility model then eliminates this defect.
Traditional spring type balance mechanism, equilibrant force F can change with the change of steering column up and down adjustment stroke, especially
It is when adjusting to arrive limit inferior, since camber of spring becomes larger, the power that is adjusted axially of steering column to be caused to become larger, and adjust to upper
When the limit, since camber of spring becomes smaller, the power that is adjusted up of steering column is caused to become larger, feel is deteriorated, and this is practical new
The equilibrant force F of type does not change with up and down adjustment stroke, preferably adjusts feel so can provide.
Since rack gear 9 devises upper limit tooth 9-2 and lower limit tooth 9-3, when the external tooth of unidirectional damping wheel 10 turns to this
When two extreme positions, rotary motion is limited, so that position-limiting action is played in the up and down adjustment movement to steering column.
After handle mechanism is locked, needle bearing 7 can compress the gear ring 10-1 of unidirectional damping wheel 10 simultaneously, make gear ring 10-1
It is locked, so gear ring 10-1 and rack gear 9 can also provide steering column additional retentivity up and down.
Compared with prior art, structure is simple for the utility model, using unidirectional damping wheel instead of heterotypic spring, greatly
Assembly and production are optimized, and additional retentivity can be provided.
Claims (3)
1. a kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel, including the small assembly of steering shaft, upper column tube, hand
Handle, mounting bracket, the small assembly of lower column tube, it is characterised in that: the upper end external splines of the small assembly of steering shaft (1) can be with steering wheel
Connection, the lower end internal spline of the small assembly of steering shaft (1) are then connected with output shaft, the middle part of the small assembly of steering shaft (1)
Divide and be set in upper prop pipe (2) using bearing, the lower end inner wall of the upper column tube (2) then wraps the small assembly of lower column tube (3)
Cylindrical outer wall, the position rack on the upper column tube (2) close to lower end are equipped with mounting bracket (4), and the one of handle (5) and screw rod (6)
Interference connection is held, the other end of screw rod (6) passes through the up and down adjustment slot of the front and back regulating tank of upper column tube (2), mounting bracket (4)
(4-1), unidirectional damping wheel (10), needle bearing (7) are matched with nut (8)；Screw rod (6) are locked using nut (8), it is described
The surface ipsilateral with unidirectional damping wheel (10) is welded with rack gear (9) in mounting bracket (4), the rack gear (9) and unidirectional damping wheel
(10) rotation can be intermeshed between.
2. a kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel according to claim 1, feature
Be: the unidirectional damping wheel (10) is mainly made of gear ring (10-1), plastic sheath (10-2), unilateral bearing (10-3), described
There are 24 external tooths outside gear ring (10-1), gear ring (10-1) is internal there are three groove, and the plastic sheath (10-2) is non-close ring,
There are three convex ribs in the outer surface of plastic sheath (10-2), and the inner surface of plastic sheath (10-2) is smooth inner wall, the unilateral bearing
The outer ring of (10-3) is smooth, cylindrical peripheral surface, and the left end face of unilateral bearing (10-3) is equipped with square boss (10-3-1), the modeling
The convex ribs of material set (10-2) are matched with the groove of gear ring (10-1), so that plastic sheath (10-2) and gear ring (10-1) are assemblied in one
It rises, the smooth inner wall of plastic sheath (10-2) and the outer ring of unilateral bearing (10-3) are interference fitted, so that gear ring (10-1), plastic sheath
The assembly of (10-2), unilateral bearing (10-3) is integrated.
3. a kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel according to claim 1, feature
Be: the rack gear (9) is mainly made of orthodont (9-1), upper limit tooth (9-2) and lower limit tooth (9-3), the orthodont
The a height of 2.25mm of the tooth of (9-1), a height of 4mm of tooth of upper limit tooth (9-2), a height of 4mm of tooth of lower limit tooth (9-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821364792.0U CN208978945U (en) | 2018-08-23 | 2018-08-23 | A kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821364792.0U CN208978945U (en) | 2018-08-23 | 2018-08-23 | A kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel |
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| Publication Number | Publication Date |
|---|---|
| CN208978945U true CN208978945U (en) | 2019-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821364792.0U Active CN208978945U (en) | 2018-08-23 | 2018-08-23 | A kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909823A (en) * | 2018-08-23 | 2018-11-30 | 博世华域转向系统有限公司 | A kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel |
| CN108909823B (en) * | 2018-08-23 | 2024-05-17 | 博世华域转向系统有限公司 | Radial balance mechanism of automobile steering column based on unidirectional damping wheel |
-
2018
- 2018-08-23 CN CN201821364792.0U patent/CN208978945U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108909823A (en) * | 2018-08-23 | 2018-11-30 | 博世华域转向系统有限公司 | A kind of car steering tube column radial equilibrium mechanism based on unidirectional damping wheel |
| CN108909823B (en) * | 2018-08-23 | 2024-05-17 | 博世华域转向系统有限公司 | Radial balance mechanism of automobile steering column based on unidirectional damping wheel |
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