CN101450636A - Locking device for an adjustment unit of a motor vehicle seat - Google Patents

Locking device for an adjustment unit of a motor vehicle seat Download PDF

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Publication number
CN101450636A
CN101450636A CNA2008101827567A CN200810182756A CN101450636A CN 101450636 A CN101450636 A CN 101450636A CN A2008101827567 A CNA2008101827567 A CN A2008101827567A CN 200810182756 A CN200810182756 A CN 200810182756A CN 101450636 A CN101450636 A CN 101450636A
Authority
CN
China
Prior art keywords
blocking device
spring
angle
oblique portion
base portion
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.)
Pending
Application number
CNA2008101827567A
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Chinese (zh)
Inventor
维尔弗里德·贝内克
布尔克哈德·贝克尔
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.)
C Laubb Hanmerstein & Co KG GmbH
Johnson Controls Metals and Mechanisms GmbH and Co KG
Original Assignee
C Laubb Hanmerstein & Co KG 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 C Laubb Hanmerstein & Co KG GmbH filed Critical C Laubb Hanmerstein & Co KG GmbH
Publication of CN101450636A publication Critical patent/CN101450636A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/433—Safety locks for back-rests, e.g. with locking bars activated by inertia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/43—Safety locks

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Seats For Vehicles (AREA)

Abstract

The present invention provides a locking device for an adjustment unit of a motor vehicle seat having a toothed bar (32), a locking part (36) cooperating with the toothed bar, a spring (60) that abuts the locking part and a base part (42). The locking part comprises at least one tooth (38) for engaging the toothed bar. A mass body (44) is associated with the locking part and is hinged to the base part (42) for pivotal movement about an axis (40). The mass body has a control contour (48) which comprises a) a flat bight portion with a base (50), b) at least one enabling inclined portion (54) adjoining the bight portion, c) a transition region (56) adjoining the enabling inclined portion and d) one retaining inclined portion (58) adjoining the transition region. The spring (60) fits at one abutment end (66) against the base (36) of the control contour (48) in the normal position of the locking part (36); the abutment end (66) is capable of moving along the control contour.

Description

The blocking device that is used for the automobile seat regulon
Technical field
The present invention relates to a kind of blocking device that is used for the automobile seat regulon, blocking device in particular for the regulon of hinge mount form, Lock Part that comprise ratch, cooperates and the spring that joins with Lock Part and base member with ratch, described Lock Part comprises that at least one is used for and ratch ingear tooth and the mass that is associated with described Lock Part, and described mass is hinged to base member with around the axle pivoting action.This blocking device can be from U.S. Patent No. 5,882, and 080 learns.
Background technology
Acceleration/accel is depended in the running of this blocking device, and when bumping the stop regulon.Under the situation of the acceleration/accel when acceleration/accel is lower than collision, blocking device still maintains its normal position.In this normal position, the blocking device un-activation, and can the stop regulon.Regulon can be the longitudinal adjustment mechanism such as rack pinion; Preferably, it is around pivot work and generally is referred to as the regulon of hinge mount.Preferably, regulon is the hinge mount of back of seat.It is preferred for following hinge mount, promptly only at the hinge mount of a side stop with the passive seat side of stop.
Be higher than the threshold value that the self-executing and accekeration that produce of blocking device is adapted to make other safety device such as safety air bag etc. to come into force when bumping.
In a single day need a kind of blocking device of automatic engagement, it is stop hinge or linear regulation unit when producing acceleration/accel owing to accident, and is in latched position, it will remain on this position.The problem of blocking device is, the Lock Part that moves owing to acceleration/accel and the tooth engagement of ratch, but because the motion momentum are again from ratch elastic recoil, i.e. jump out of mesh state more or less.
The disclosure relates to following prior art file in addition: DE 40 31 285 A1, DE 27 47 584A1, DE 196 37 658 B4 and DE 103 06 827 B4.
Summary of the invention
The object of the invention is further to develop such blocking device of mentioning in the literary composition makes it just maintain latched position when being in latched position.Guarantee the locking of short time thus, also can guarantee forever to keep its latched position.
In view of the blocking device of the above-mentioned type has been realized this purpose by the following fact, be that mass comprises the control profile, this control profile comprises: the power part that a) has base portion, b) at least one and described curved portion are joined allows oblique portion, c) with described transitional region of allowing that oblique portion joins, and d) oblique portion of maintenance of joining with described transitional region, an abutting end of described spring is engaged to the base portion of described control profile when described Lock Part is in the normal position, under situation about bumping, described abutting end can move and moves to the oblique portion of described maintenance from described base portion along described control profile.
The abutting end of spring moves with respect to Lock Part on this blocking device.Lock Part has the control profile.Abutting end joins with the control profile.It can move along the control profile.In case it is crossed transitional region and arrives the oblique portion that keeps, can't return.Thereby Lock Part is in the position that keeps owing to the engagement of spring and ratch.As a result, realized safe engagement on the one hand.On the other hand, prevent Lock Part, make its no longer possibility resilience from the ratch elastic recoil.
After being higher than the accident of colliding threshold value, at first blocking device must be recalled to original position.As long as it is not recalled to original position, blocking device promptly is in engagement and arrested state.
Base portion extends with the right angle with respect to the direction of the power of action of the spring on base portion.Preferably, base portion extends 1 to 4 millimeter short range.Thereby,, also can realize between base portion and the abutting end relative motion taking place even under the acceleration/accel of minimum.As a result, even it only moves little distance, Lock Part also always keeps small moving.In a word, therefore it for good and all keep serviceability.
The oblique portion that allows of joining with base portion is sized to, and needs certain power or certain moment of torsion to make abutting end can overcome the effect of spring along allowing that oblique portion moves.This zone is sized to make blocking device to realize enabling of expectation under the certain acceleration value.
In case abutting end is along allowing that oblique portion moves and arrive transitional region, then it slides the oblique portion that keeps of going up.Transitional region can have sharp-edged, and can for example be configured to the top of sawtooth; But also can be configured to by sphering.It can be configured to abutting end mobile no longer included new requirement.In case abutting end arrives the end of allowing oblique portion, it is intended to arrive under the effect of the shape of its momentum or control profile and keeps oblique portion, promptly slides from the end of allowing oblique portion.Keep oblique portion in case it arrives, then blocked return path.Return path is by manual or otherwise it is established back original position and open-minded.Yet under normal conditions, the back automobile seat that has an accident has been damaged the degree that must change, therefore adjusts back without original position.
Improve among the embodiment preferred, keep oblique portion with respect to the angle of base portion less than allowing the angle of oblique portion with respect to base portion.For example, keep oblique portion with respect to allowing of the angle extension of oblique portion with 10 to 30 degree.Thereby keep oblique portion with respect to base portion with obviously greater than 45 degree, preferably extend near the angles of 90 degree.Allow oblique portion with respect to base portion bevelled angle greater than material therefor from the locking angle.
Preferably, spring is a stand spring.On the one hand it is cheap and make simple and easyly, and spring force is very accurate on the other hand.This situation is applicable to batch manufacturing too, because generally be exactly this situation in automobile seat.
In order to possess the condition of special qualification, in base member, be provided with guide opening with guide engagement end in this guide opening, the i.e. free end of stand spring.Therefore accurate condition is provided.Preferably, abutting end not with the wall butt of guide opening.Yet in motion and accelerator, abutting end is still stayed in the control profile.
Preferably, be provided with roll body, it places between the abutting end and control profile of spring.For the lock function that depends on acceleration/accel, know exactly that importantly abutting end is along control profile suffered friction force when moving, particularly along allowing friction force suffered when oblique portion moves.By friction of rolling, can provide the condition of appropriate qualification.And, preferably, the surface of the surface of abutting end and/or control profile, the surface of especially allowing oblique portion scribbles the coating that can provide and consider given friction condition lastingly.This allows to be issued to and to keep at given acceleration/accel the ingear particularity of blocking device.
Preferably, the plane symmetry that the control profile phase is constituted for contact point and spring force direction by spring and base portion, this plane parallel is extended in the axis of mass.Thus, under the situation that afterbody collision or front shock take place, condition is identical.Yet, also can regulate the condition of front shock and afterbody collision independently.By the degree of dip that oblique portion is allowed in change, can obtain the different accekeration that it is enabled.
Improve among the embodiment preferred, mass and Lock Part not only keep motion to get in touch, and also are combined together to form one; Particularly they can be made by one.This has simplified installation.Spring can be drag spring or compression spring.
Description of drawings
The example that provides by the reference accompanying drawing and by reading appended claim and the following non restrictive description to embodiment of the present invention, further feature of the present invention or advantage will become more obvious.In described accompanying drawing:
Fig. 1 illustrates the reduced graph of automobile seat in the mode of lateral plan, and wherein blocking device is owing to tilting to operate;
Fig. 2 illustrates the enlarged drawing of the part of Fig. 1, that is, and and the zone under the back of seat;
Fig. 3 is similar to Fig. 2, but is at present under the situation about bumping;
Fig. 4 is the birds-eye view with the mass shown in the high range according to Fig. 1 to Fig. 3;
Fig. 5 is the simplified side view that is used for second one exemplary embodiment similar to Fig. 1.
The specific embodiment
The primary element of actual known automobile seat only is shown among the figure.Shown the seat frame 20 that is bearing on the underframe among the figure.In first one exemplary embodiment according to Fig. 1 to 4, underframe is formed by pair of tracks and rear arm 28 and front arm 30, and this comprises top rail 22 and base track 24 to track.Base track 24 is arranged to be fastened on the self-propelled vehicle base plate (not shown).Seat frame 20 supporting seat parts 26.
Top rail 22 is connected to seat frame 20 at the rear portion by rear arm 28 hinges.Top rail 22 forwardly is connected to seat frame 20 by front arm 30 hinges.Usually form four bar connecting rod mechanisms.This mechanism with known manner by form for to determine that about the rear arm axis ratch in the arcus tooth zone 32 at center comes stop.The stop component and the described arcus tooth zone 32 of the rotatable miniature gears of installing such as off-centre link, and described stop component is not shown herein but be actually known and can be manually or by motor actuated.Lock Part 36 shown in the best cooperates with ratch 32 in Fig. 2 and Fig. 3.Lock Part 36 is configured to dual symmetry and either side has two teeth 38.Lock Part 36 pivots around axis 40, and this axis is arranged on the base member 42, and base member is formed by the seat sidepiece of seat frame 20 herein.
Mass 44 is associated and is attached thereto with Lock Part 36 and connects, connect at least can with its associated movement.Mass 44 also pivots around axis 40.In the embodiment according to Fig. 1 to Fig. 3, it is two separate parts that link together that two parts 36 and 44 are depicted as.
Preferably, these two parts are made by one.The advantage of two-piece type configuration is that Lock Part 36 is positioned on the plane of ratch 32, and mass 44 is located to such an extent that lowlyer make it have mobile space.Preferably, mass 44 cresteds are in order to avoid hindered by external component.
Mass 44 becomes the shape of equilateral triangle substantially; Axis 40 is near leg-of-mutton one jiao of location.Mass 44 is extended along negative Z direction substantially.Its barycenter 46 is positioned to have tangible distance with axis 40.Alternately, it also can extend along positive Z direction.With regard to practicality, it should be arranged so that the moment of torsion that can apply maximum possible along the acceleration force of directions X or negative directions X effect to mass 44.When if the straight line of connection center of mass point 46 and axis 40 meets at right angles extension substantially with respect to directions X, situation promptly so.
Mass 44 or Lock Part 36 have control profile 48.In an illustrated embodiment, the dual symmetry of this control profile also becomes M shape substantially.It has center base 50.This base portion is positioned at the either side by the determined plane of symmetry 52 of center-point of axis 40 and base portion 50.The heart therein, base portion 50 extends with respect to this plane of symmetry 52 with meeting at right angles.In the position of adjoining this center, it also extends with the right angle or with degree of dip slightly upwards, and under any circumstance, its angle is all very little, for example less than 12 degree.Base portion 50 is very short; 2 to 5 millimeters long at the most.Allow the either side adjacency of oblique portion 54 and base portion 50.Profile phase is raised with the angle of about 30 degree toward the outer side for base portion 50.Transitional region 56 is in abutting connection with allowing oblique portion 54.In example embodiment, it is configured to be bent into convex.Keep oblique portion 58 to be adjacent outwardly.It extends with respect to the angle of allowing 54 one-tenth about 60 degree of oblique portion, or extends with respect to 50 one-tenth 60 degree of base portion or bigger angle.Keep oblique portion 58 be towards the part of the curve of axis 40 spherings and in addition the inclined-plane be the boundary.Base portion 50 and two allow that oblique portion 54 also forms central curve.Generally speaking, the control profile has the curved portion of arranging with coordination thus.
Be provided with spring 60, it is configured to stand spring.Spring 60 is placed in from the bolt 62 of base member 42 projections.A supporting leg of spring is near positive stop 64, and positive stop 64 also is formed on the base member 42.Another supporting leg has abutting end 66.Spring joins at this end and control profile 48.Abutting end 66 is made of the crooked free end that meets at right angles of leg.It passes figure plane and extends.It extends through the guide opening 68 that is arranged in the base member 42.
In the normal position of Lock Part illustrated in figures 1 and 2 36, abutting end 66 joins with base portion 50; It is positioned at the central authorities of base portion 50 exactly.The spring force that applies extends in the plane of symmetry 52.Base portion 50 can be provided with to such an extent that shortly make it only can hold abutting end 66; Yet its width also can be 2 to 5 times of abutting end 66 width.
Figure 3 illustrates because collision causes acceleration/accel situation afterwards.Abutting end 66 was in and kept oblique portion 58 places this moment; Simultaneously the lower end of it and guide opening 68 joins.Shown in situation be stable.Therefore Lock Part 36 can not back pivot, and keeps oblique portion 58 very precipitous and can not further pivot along the engagement direction, and this is because two teeth 38 and stopping that ratch 32 engagements are caused.
In second example embodiment shown in Fig. 5, mass 44 is made up of a round plate and one substantially, and axis 40 is arranged on this axle.Lock Part 36 is by constituting from the outwards outstanding tooth of mass 44.They cooperate with the ratch 32 that the center fixes on the pivotal axis of back of seat hinge.The normal position as shown in the figure.
Below axis 40, mass 44 still has short part axle, and this part axle is used to control locking of the present invention.In base member 42, spring-loaded ball 70 remains near the axis 40; It is positioned at a hole of base member 42, and the diameter in this hole is less than ball size.The bottom of mass 44 is fork-shaped, and described fork-shaped has two tips.Be the base portion 50 that offsets with ball 70 between these two tips.The inward flange of tip forms allows oblique portion 54.If mass from shown in the abundant deflection in normal position, then ball 70 is pushed downwards to tip below, is transitional region 56 herein.Then, ball snaps in the following recess of each single tip, and recess is invisible down for these; Herein for keeping oblique portion 58.
As from knowing first example embodiment, stand spring can be used for replacing ball 70.Thereby abutting end 66 conforms to the position of ball 70.

Claims (12)

1. blocking device that is used for the automobile seat regulon, blocking device especially for the regulon of hinge mount form, comprise ratch (32), Lock Part (36) that cooperates with described ratch (32) and the spring (60) that cooperates with described Lock Part (36) and base member (42), described Lock Part (36) comprises that at least one is used for and ratch (32) ingear tooth (38) and the mass (44) that is associated with described Lock Part (36), described mass (44) is hinged to described base member (42) with around axis (40) pivoting action, it is characterized in that described mass (44) comprises control profile (48), described control profile (48) comprising: the power part that a) has base portion (50), b) at least one and described curved portion are joined allows oblique portion (54), c) with described transitional region (56) of allowing that oblique portion (54) joins, and d) oblique portion of maintenance (58) of joining with described transitional region, an abutting end (66) of described spring (60) is engaged to the base portion (50) of described control profile (48) at described Lock Part (36) when being in the normal position, under situation about bumping, described abutting end (66) can move and moves to the oblique portion of described maintenance (58) from described base portion (50) along described control profile (48).
2. blocking device as claimed in claim 1 is characterized in that: described base portion (50) extends with respect to the direction that spring (60) acts on the power on the base portion (50) with meeting at right angles.
3. blocking device as claimed in claim 1 or 2, it is characterized in that: the oblique portion of described maintenance (58) extends with first angle with respect to described base portion (50), describedly allow that oblique portion (54) extends with second angle with respect to described base portion (50), the route of described route of allowing oblique portion (54) and the oblique portion of described maintenance (58) intersects with acute angle, described base portion (50) and describedly allow that the angle between the oblique portion (54) is less than the angle between described base portion (50) and the oblique portion of described maintenance (58).
4. blocking device according to any one of the preceding claims is characterized in that: described spring (60) is stand spring.
5. blocking device as claimed in claim 4 is characterized in that: described base member (42) is provided with guide opening (68), and the free end of stand spring is engaged in the described guide opening (68).
6. blocking device according to any one of the preceding claims is characterized in that: described control profile and/or spring (60) comprise the coating of determining the friction occurrence.
7. blocking device according to any one of the preceding claims is characterized in that: be provided with roll body, and described roll body is arranged on the abutting end (66) of described spring (60).
8. blocking device according to any one of the preceding claims, it is characterized in that: described control profile (48) is with respect to by the contact point of described spring (60) and base portion (50) and the plane symmetry that the spring force direction is constituted, and described plane parallel is extended in axis (40).
9. blocking device according to any one of the preceding claims, it is characterized in that: described ratch (32) has the flank of tooth, the tooth (38) of described Lock Part (36) joins with the described flank of tooth under situation about bumping, this flank of tooth is substantially perpendicular to the straight-line extension that connects this flank of tooth and axis (40), the difference at itself and right angle be between the material therefor in the locking angle.
10. blocking device according to any one of the preceding claims is characterized in that: described mass (44) have along the z direction be positioned under the axis (40) or on big quality region.
11. blocking device according to any one of the preceding claims, it is characterized in that: at least one oblique portion of described maintenance (58) with respect to described axis (40) radially with smaller or equal to 20 ° angle, be preferably smaller or equal to 10 ° angle, especially with angle tilt from the locking angle less than material therefor, describedly radially intersect with keeping oblique portion (58).
12. blocking device according to any one of the preceding claims is characterized in that: described Lock Part (36) and mass (44) are joined together to form one, particularly make by one.
CNA2008101827567A 2007-12-06 2008-12-04 Locking device for an adjustment unit of a motor vehicle seat Pending CN101450636A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007059012 2007-12-06
DE102007059012.3 2007-12-06

Publications (1)

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CN101450636A true CN101450636A (en) 2009-06-10

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CNA2008101827567A Pending CN101450636A (en) 2007-12-06 2008-12-04 Locking device for an adjustment unit of a motor vehicle seat

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US (1) US20090146486A1 (en)
CN (1) CN101450636A (en)
DE (1) DE102008046909A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104284800A (en) * 2012-05-07 2015-01-14 约翰逊控制技术公司 Vehicle seat
CN105799565A (en) * 2015-01-20 2016-07-27 福特全球技术公司 Seat mechanism inertia locking system
CN111374754A (en) * 2018-12-31 2020-07-07 韦伯斯特生物官能(以色列)有限公司 Adjustable balloon fixation for a sheath
CN111712403A (en) * 2017-12-21 2020-09-25 安道拓工程技术知识产权有限公司 Collision prevention unit, in particular for a vehicle seat, and vehicle seat

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012008702B4 (en) * 2012-04-28 2018-12-06 Faurecia Autositze Gmbh Adjustment device for a vehicle seat and vehicle seat
DE102018220029A1 (en) * 2018-11-22 2020-05-28 Lear Corporation Seat back adjustment system

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US4118067A (en) * 1976-12-13 1978-10-03 American Safety Equipment Corporation Inertia-responsive vehicle seat back latch mechanism
DE2747584A1 (en) 1977-10-24 1979-04-26 Keiper Automobiltechnik Gmbh TRANSPORT LOCKING DEVICE FOR VEHICLE SEATS
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DE4031285A1 (en) 1990-10-04 1992-04-09 Eca Automobilteile Entwicklung IMPACT SAFETY FOR A VEHICLE SEAT, IN PARTICULAR FOR A MOTOR VEHICLE SEAT
US5163736A (en) * 1991-05-21 1992-11-17 Ford Motor Company Inertial lock mechanism for vehicle seat reclining apparatus
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104284800A (en) * 2012-05-07 2015-01-14 约翰逊控制技术公司 Vehicle seat
CN105799565A (en) * 2015-01-20 2016-07-27 福特全球技术公司 Seat mechanism inertia locking system
CN111712403A (en) * 2017-12-21 2020-09-25 安道拓工程技术知识产权有限公司 Collision prevention unit, in particular for a vehicle seat, and vehicle seat
CN111712403B (en) * 2017-12-21 2022-09-20 恺博座椅机械部件有限公司 Collision prevention unit, in particular for a vehicle seat, and vehicle seat
CN111374754A (en) * 2018-12-31 2020-07-07 韦伯斯特生物官能(以色列)有限公司 Adjustable balloon fixation for a sheath

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Publication number Publication date
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US20090146486A1 (en) 2009-06-11

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Open date: 20090610