CN109835408A - The locking device of steering column - Google Patents

The locking device of steering column Download PDF

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Publication number
CN109835408A
CN109835408A CN201711190775.XA CN201711190775A CN109835408A CN 109835408 A CN109835408 A CN 109835408A CN 201711190775 A CN201711190775 A CN 201711190775A CN 109835408 A CN109835408 A CN 109835408A
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CN
China
Prior art keywords
bar
sleeve
steering column
arm
locking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201711190775.XA
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Chinese (zh)
Other versions
CN109835408B (en
Inventor
高明
赵敏彧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch Automotive Steering GmbH
Original Assignee
Robert Bosch Automotive Steering GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Automotive Steering GmbH filed Critical Robert Bosch Automotive Steering GmbH
Priority to CN201711190775.XA priority Critical patent/CN109835408B/en
Priority claimed from CN201711190775.XA external-priority patent/CN109835408B/en
Publication of CN109835408A publication Critical patent/CN109835408A/en
Application granted granted Critical
Publication of CN109835408B publication Critical patent/CN109835408B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

This application discloses a kind of locking devices of steering column.Comprising: steering column, the steering column has tight lock part;Bracket, the bracket have the first arm and the second arm being spaced apart by the tight lock part;Clamping component, the clamping component include bar, and the bar passes through the first arm, the second arm and the tight lock part of the bracket;The clamping component further include: sleeve, the clamping component act between releasing position and locked position, and the sleeve has folding and unfolding portion, and the bar passes through the sleeve, and on the releasing position, the bracket discharges the tight lock part;When acting from the releasing position to the locked position, tight lock part described in the stent clamping, the tight lock part drives the folding and unfolding portion to shrink to the bar.The application structure is simple, and operation is reliable, at low cost.

Description

The locking device of steering column
Technical field
This application involves the steering systems of automobile, in particular relate to a kind of locking device of steering column.
Background technique
Steering column is the element of steering system connection steering wheel and diverter.By adjust steering column (such as adjust turn to Height or gradient of column etc.) steering wheel can be adjusted to the position for enabling driver feel comfortable.Locking device can be passed through The position of fixed steering column.When locking, steering column fixation is unadjustable;When release, steering column is adjusted.In addition, locking dress The locking retentivity for being set to steering column offer need to meet certain design code.
Summary of the invention
This application involves one aspect be to provide the locking device of steering column a kind of, the locking device includes:
Steering column, the steering column have tight lock part;
Bracket, the bracket have the first arm and the second arm being spaced apart by the tight lock part;
Clamping component, the clamping component include bar, and the bar passes through the first arm, the second arm and the locking of the bracket Portion;
The clamping component further include:
Sleeve, the clamping component act between releasing position and locked position, and the sleeve has folding and unfolding portion, and the bar is worn The sleeve is crossed, on the releasing position, the bracket discharges the tight lock part;From the releasing position to the locking position When setting movement, tight lock part described in the stent clamping, the tight lock part drives the folding and unfolding portion to shrink to the bar.
In above-mentioned locking device, the clamping component further includes cam mechanism, and the cam mechanism is set in the bar On, have elastic component between the sleeve and the cam mechanism, on the locked position, the folding and unfolding portion of the sleeve is by institute Elastic element effect is stated to be connected in the opening for the tight lock part that the bar passes through.
In above-mentioned locking device, the folding and unfolding portion of the sleeve passes through the outer peripheral surface of the sleeve and the inner wall of the opening Contact abuts over said opening.
In above-mentioned locking device, the sleeve is oblique with first collapsed towards the opening on the outer peripheral surface in folding and unfolding portion Face, the second inclined-plane of setting and first contact of incline plane in the inner wall surface of the opening.
In above-mentioned locking device, the sleeve opens up at least 2 slots longitudinally extended along the bar in folding and unfolding portion, The folding and unfolding portion enters in the opening.
In above-mentioned locking device, the clamping component further include be fixed on the bar on the outside of first arm Handle, the cam mechanism are fixed on the first arm of the bracket, are passed between the handle and the cam mechanism for cam Dynamic, when the handle drives bar rotation, the handle applies additional clamping force to first arm.
In above-mentioned locking device, the cam mechanism further includes the inside in first arm being set on the bar Protective case.
In above-mentioned locking device, screw thread is set, the clamping component includes being located on the outside of second arm on the bar Nut assembly, the nut assembly engages with the screw thread, when the clamping component is from the releasing position to the locking When position acts, the bar rotation, the nut assembly is moved relative to the bar to close to the first arm direction.
In above-mentioned locking device, the tight lock part has spaced apart the first wall and the second wall, and the of the tight lock part It is connected between one wall and the second wall by welded plate.
In above-mentioned locking device, the sleeve is passed through to the bar clearance fit, the sleeve is located at first wall Between second wall, in the locked position, first arm is close to first wall and second arm is close to institute The second wall is stated, the opening is set on second wall.
In locking device locking, folding and unfolding portion is in contraction state, and tight lock part is centainly contacted with bar holding, to facilitate Effective clamping force is applied to tight lock part in steering column two sides upper bracket, to provide improved support force for steering column.Herein, The contact connectio of tight lock part and bar is realized by sleeve folding and unfolding portion.During locking, sleeve enters bar opening across tight lock part Mouthful, eliminate gap existing for opening internal locking portion and bar.In order to be able to maintain the contact with tight lock part and bar, sleeve and opening Between be designed to suitably cooperate, their contact surface is designed to wedge shape.In addition, by one end of sleeve be designed to it is flexible with Sleeve is facilitated to enter in opening.The application structure is simple, and operation is reliable, at low cost.
Through the following detailed description with reference to the accompanying drawings, other aspect and feature of the application become obvious.But it should know Road, which is only the purpose design explained, not as the restriction of scope of the present application, this is because it should refer to Appended claims.It should also be noted that attached drawing is merely intended to conceptually illustrate structure and process described herein, unless in addition It points out, it is not necessary to scale attached drawing.
Detailed description of the invention
In conjunction with attached drawing refering to the detailed description of following specific embodiments, the application will be more fully appreciated, in attached drawing Same reference numbers refer to same element in view always.Wherein:
Fig. 1 be this application involves steering column locking device a kind of embodiment structural schematic diagram;
Fig. 2 is the sectional view of the locking device of steering column shown in Fig. 1;
Fig. 3 is enlarged diagram of the section in tight lock part opening of the locking device of steering column shown in Fig. 2;And
Fig. 4 be this application involves steering column locking device middle sleeve structural schematic diagram.
Specific embodiment
For help those skilled in the art can definitely understand this application claims theme, with reference to the accompanying drawing The specific embodiment of the application is described in detail.
Fig. 1 be this application involves steering column locking device structural schematic diagram.As shown, the locking of the steering column Device includes steering column 10, tight lock part 20 and bracket 30.Tight lock part 20 is fixed on steering column 10, is one of steering column Point.Tight lock part 20 includes that the first wall a and the second wall b(spaced apart are not shown), shape approximation U shape.Bracket 30 and Che Lian Connect, and bracket 30 be locked portion 20 be spaced apart.Bracket 30 includes the first arm a ' and the second arm b ', is similar to square structure.This Sample, there are two the component parts as fixture respectively on each side of steering column 10: the first wall a and the first arm a ';And the Two wall b and the second arm b '.
Fig. 2 is the sectional view of the locking device of steering column in Fig. 1.The clamping component of the locking device includes bar 41, institute Stating bar 41 is bolt as shown in the figure, sequentially passes through the first arm a ' of bracket 30, the first wall a of tight lock part 20, tight lock part 20 The second arm b ' of second wall b and bracket 30.Under the action of the clamping component, squeezed by bracket 30 to tight lock part 20, To apply the clamping force to steering column 10.Clamping component further includes the cam on one end of the first arm a ' for being set to bar 41 Mechanism 42 and the sleeve 43 on one end of the second arm b '.Sleeve 43 has folding and unfolding portion 432, passes through set to 41 clearance fit of bar Cylinder 43.When cam mechanism 42 acts on, sleeve 43 can be moved and be acted between releasing position and locked position along bar 41.It is releasing It puts on position, bracket 30 discharges tight lock part 20.When acting from locked position to releasing position, bracket 30 locks tight lock part 20, lock Tight portion 20 drives folding and unfolding portion 432 to shrink to bar 41.It shrinks so that tight lock part 20 connects via sleeve 43 and bar 41 in folding and unfolding portion 432 Touching, so that steering column 10 is locked up along steering column axial direction.
It is provided with the opening passed through for bar 41 on the first wall a, the second wall b of tight lock part 20, when bar 41 passes through locking When these openings in portion 20, bar 41 is not in contact with tight lock part 20.Clamping component is worked by bar 41 makes bracket 30 first Arm a ', the second arm b ' are collapsed to the first wall a and the second wall b of tight lock part 20 to generate the clamping force being applied on steering column 10. This clamping force is that steering column 10 provides the upward support force of certain steering stem shaft, is applied on steering column 10 with resisting External force (such as driver pass in and out vehicle when support steering wheel to steering column generate external force), it is ensured that steering column 10 be not destroyed and It is not subjected to displacement.If there are gap, then clamping of the bracket 30 to tight lock part 20 between bar 41 and tight lock part 20 during this Power can not proper function, therefore also can not provide reliable support force for steering column 10.The addition of sleeve 43 is so that locking When, sleeve is in contraction state, and tight lock part 20 is kept in contact via the sleeve 43 through shrinking with bar 41, the gap is eliminated, from And ensure that bracket 30 applies effective clamping force to tight lock part 20, it then ensure that the support force of steering column 10.
Gap be present in opening 21 in tight lock part 20 and bar 41 between, sleeve 43 be moved to the opening 21 of tight lock part 20 with Just it realizes and connects with the two.Sleeve 43 has first end 431 and second end 432 along bar 41 and is located at the of tight lock part 20 The inside of two arm b, folding and unfolding portion are located in second end 432.First end 431 is such as schemed by the elastic element 44(being set on bar 41 Shown in spring) connect with cam mechanism 42.On releasing position, elastic element 44 is in original state.When cam mechanism 42 When working, cam mechanism 42 is moved along the second arm b of bar 41 towards tight lock part 20, to push elastic element 44 and sleeve 43 Until the folding and unfolding portion 432 of sleeve 43 enters in opening 21.Elastic element 44 is compressed at this time, therefore is produced and headed into sleeve 43 The screen resilience of opening 21 ensure that tight lock part 20 is in contact via sleeve 43 and bar 41 in opening 21.Fig. 3 show Fig. 2 Enlarged drawing at the opening 21 of middle section.Sleeve 43 be it is cylindric, the outer peripheral surface in the folding and unfolding portion 432 of sleeve 43 be set as first tiltedly Face 433, while 21 inner walls that are open are set as the second inclined-plane 211 contacted with the first inclined-plane 433, this wedge structure has certain Self-locking function, guarantee opening 21 in tight lock part 20 and bar 41 contact connectio.Fig. 4 is the structural representation of sleeve 43.In order to Ensure sleeve 43 folding and unfolding portion 432 enter opening in, the folding and unfolding portion 432 of sleeve 43 be designed to " flexibility " or with certain receipts Contracting elasticity.On the outer peripheral surface of sleeve 43, at least two slots 434 for longitudinally extending certain distance along sleeve are offered, by second The a full circle at end 432 is divided into the conical ring being made of multiple cones 435.Designing in this way is advantageous in that when sleeve 43 is heading into During opening 21, these cones 435, which can be collapsed consciously, smoothly enters opening 21 close to the second inclined-plane 211 of opening 21 In.The angle on the first, second inclined-plane 433,211 and the quantity of slot 434 each depend on design requirement.
The cam structure that there is the cam mechanism 42 of clamping component axial (i.e. along the direction of bar 41) length to change, therefore can To change the axial position of tight lock part 20, bracket 30, elastic element 44 and sleeve 43 relative to bar 41.In the work of cam mechanism 42 Under, tight lock part 20 and bracket 30 are tightened towards steering column 10, and elastic element 44 and sleeve 43 are mobile towards second arm b, b '.It can lead to Following embodiments are crossed to realize, referring to Fig. 1-2: clamping component further includes the handle 45 being fixed on bar 41, and handle 45 is located at The outside of bracket 30.Cam mechanism 42 is fixedly connected with the first arm a ' of bracket 30.It is convex between handle 45 and cam mechanism 42 Wheel transmission.For example, being provided with the boss of cam surface on cam mechanism 42, it is arranged in correspondence with groove on handle 45, when 45 turns of handle When dynamic, groove and boss cooperate, and push cam mechanism 42 mobile with the first wall a of the first arm a ' towards the tight lock part 20 of bracket 30. When clamping component locking, handle 45 is applied with the additional clamping force for helping to clamp steering column to bracket 30.Art technology Personnel should be known that the structure of cam drive here is not limited to above embodiment, can be designed with other conceivable cams It is realized to substitute.It is additionally provided with protective case 46 on side of the cam mechanism 42 relative to elastic element 44,46 structure of protective case It causes limitation cam mechanism 42 to be displaced and has the function of buffering and noise reduction.
The other end of bar is provided with nut assembly 51, nut assembly 51 includes nut, bearing and gasket etc., and nut is twisted On, bearing and gasket are pressed against on the second arm b ' of bracket 30.When bar 41 rotates, nut assembly 51 is relative to bar 41 towards first Arm a' movement, another additional clamping force for helping to clamp steering column is applied with to bracket 30.In the first wall a of tight lock part 20 And the second also welding plate 61 with supporting role between wall b.
When clamping component is unclamped, steering column 10 can adjust height along its axial direction.Sleeve 43 is located on releasing position, Elastic element 44 is in original state, and there are gaps between tight lock part 20 and bar 41 at this time.
When clamping component locking, rotational handle 45,45 driven rod 41 of handle is rotated together.Handle 45 and cam mechanism 42 Between cam drive effect so that cam mechanism 42 is moved towards 43 direction of sleeve along bar 41, cam mechanism 42 drives bracket 30 to move It is dynamic, it thus props up 30 framves and extruding force is applied to tight lock part 20.At this point, the second arm b of elastic element 44 and sleeve 43 towards tight lock part 20 Opening 21 it is mobile, until the second end 432 of sleeve 43 enters in opening 21.In opening 21, tight lock part 20 is via sleeve 43 Realize the contact connectio with bar 41.The elastic force of elastic element 44, the effect of the wedge-shaped power between sleeve 43 and opening 21 and bar 41 30 second arm b ' of other end upper bracket to the clamping force of bracket 30, makes the second wall b and nut assembly 51 of tight lock part 20 The contact for obtaining sleeve 43 holding and opening 21 and bar 41 in opening 21, realizes the locking of clamping component.Meanwhile in the locking On position, the first arm a ' of bracket 30 is to the first wall a of tight lock part 20, handle 45 to cam mechanism 42(bracket 30), bracket 30 The second arm b ' multiple effective pressures are generated to bracket 30 to the second wall b and nut assembly 51 of tight lock part 20 come clamp turn to Column 10 is securely fixed in steering column 10 on intended height position.
Although being illustrated in detail and having described the specific embodiment of the application to illustrate the principle of the application, it should be understood that , the application can be with embodied in other without departing from such principle.

Claims (10)

1. a kind of locking device of steering column, comprising:
Steering column (10), the steering column (10) have tight lock part (20);
Bracket (30), the bracket (30) have the first arm (a ') and the second arm (b ') being spaced apart by the tight lock part (20);
Clamping component, the clamping component include bar (41), and the bar (41) passes through first arm (a ') of the bracket (30), the Two arms (b ') and the tight lock part (20);
It is characterized in that the clamping component further include:
Sleeve (43), the clamping component act between releasing position and locked position, and the sleeve (43) has folding and unfolding portion (432), the bar (41) passes through the sleeve (43), and on the releasing position, the bracket (30) discharges the tight lock part (20);When acting from the releasing position to the locked position, the bracket (30) clamps the tight lock part (20), the lock Tight portion (20) drives folding and unfolding portion (432) the Xiang Suoshu bar (41) to shrink.
2. the locking device of steering column according to claim 1, it is characterized in that: the clamping component further includes cam mechanism (42), the cam mechanism (42) is set on the bar (41), has between the sleeve (43) and the cam mechanism (42) Elastic element (44), on the locked position, the folding and unfolding portion (432) of the sleeve (43) is acted on by the elastic element (44) It is connected in the opening (21) for the tight lock part (20) that the bar (41) passes through.
3. the locking device of steering column according to claim 2, it is characterized in that: the folding and unfolding portion (432) of the sleeve (43) It is contacted and is connected on the opening (21) with the inner wall of the opening (21) by the outer peripheral surface of the sleeve (43).
4. the locking device of steering column according to claim 2, it is characterized in that: the sleeve (43) is in folding and unfolding portion (432) Outer peripheral surface on have towards it is described opening (21) collapse the first inclined-plane (433), it is described opening (21) inner wall surface on be arranged The second inclined-plane (211) contacted with first inclined-plane (433).
5. the locking device of steering column according to claim 3 or 4, it is characterized in that: the sleeve (43) is in folding and unfolding portion (432) at least 2 slots (434) longitudinally extended along the bar (41) are opened up on, the folding and unfolding portion (432) enters the opening (21) in.
6. the locking device of steering column according to claim 2, it is characterized in that: the clamping component further includes being fixed on institute The handle (45) on the outside of first arm (a ') on bar (41) is stated, the cam mechanism (42) is fixed on the bracket (30) The first arm (a ') on, between the handle (45) and the cam mechanism (42) be cam drive, when the handle (45) band When moving the bar (41) rotation, the handle (45) applies additional clamping force to first arm (a ').
7. the locking device of steering column according to claim 6, it is characterized in that: the cam mechanism (42) further includes being arranged The protective case (46) of the inside in first arm (a ') on the bar (41).
8. the locking device of steering column according to claim 6, it is characterized in that: screw thread is set on the bar (41), it is described Clamping component includes the nut assembly (51) on the outside of second arm (b '), and the nut assembly (51) is nibbled with the screw thread It closes, when the clamping component is acted from the releasing position to the locked position, bar (41) rotation, the nut group Part (51) is moved relative to the bar to close to the first arm direction.
9. the locking device of steering column a method according to any one of claims 6-8, it is characterized in that: the tight lock part (20) has There are the first wall (a) and the second wall (b) spaced apart, passes through weldering between the first wall (a) and the second wall (b) of the tight lock part (20) Fishplate bar (61) connection.
10. the locking device of steering column according to claim 9, it is characterized in that: the bar (41) clearance fit pass through The sleeve (43), the sleeve (43) is between first wall (a) and second wall (b), in the locked position When, first arm (a ') is close to first wall (a) and second arm (b ') is close to second wall (b), the opening (21) it is set on second wall (b).
CN201711190775.XA 2017-11-24 Locking device for steering column Active CN109835408B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711190775.XA CN109835408B (en) 2017-11-24 Locking device for steering column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711190775.XA CN109835408B (en) 2017-11-24 Locking device for steering column

Publications (2)

Publication Number Publication Date
CN109835408A true CN109835408A (en) 2019-06-04
CN109835408B CN109835408B (en) 2021-10-01

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2158737Y (en) * 1993-06-28 1994-03-16 张志明 Locking device
US20050081674A1 (en) * 2003-09-17 2005-04-21 Nsk Ltd. Steering column apparatus
CN201326671Y (en) * 2008-09-26 2009-10-14 深圳市大族精密机电有限公司 Locking mechanism
CN103370255A (en) * 2010-10-08 2013-10-23 Trw操舵系统波兰有限责任公司 A steering column assembly
CN103702891A (en) * 2011-06-17 2014-04-02 Trw有限公司 A clamp assembly for a steering column assembly
WO2015185892A1 (en) * 2014-06-02 2015-12-10 Trw Limited A steering column assembly
JP2016068589A (en) * 2014-09-26 2016-05-09 日本精工株式会社 Support device for steering column
CN106004979A (en) * 2016-07-12 2016-10-12 广州汽车集团股份有限公司 Four-way adjusting mechanism for steering column
CN206485388U (en) * 2017-02-28 2017-09-12 长城汽车股份有限公司 Steering column locking device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2158737Y (en) * 1993-06-28 1994-03-16 张志明 Locking device
US20050081674A1 (en) * 2003-09-17 2005-04-21 Nsk Ltd. Steering column apparatus
CN201326671Y (en) * 2008-09-26 2009-10-14 深圳市大族精密机电有限公司 Locking mechanism
CN103370255A (en) * 2010-10-08 2013-10-23 Trw操舵系统波兰有限责任公司 A steering column assembly
CN103702891A (en) * 2011-06-17 2014-04-02 Trw有限公司 A clamp assembly for a steering column assembly
WO2015185892A1 (en) * 2014-06-02 2015-12-10 Trw Limited A steering column assembly
JP2016068589A (en) * 2014-09-26 2016-05-09 日本精工株式会社 Support device for steering column
CN106004979A (en) * 2016-07-12 2016-10-12 广州汽车集团股份有限公司 Four-way adjusting mechanism for steering column
CN206485388U (en) * 2017-02-28 2017-09-12 长城汽车股份有限公司 Steering column locking device

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