DE202019103034U1 - Detent fitting for a vehicle seat and vehicle seat - Google Patents

Abstract

Detent fitting (1) for a vehicle seat (2),
the latching fitting (1) being adjustable between a locking position for locking an adjustable seat component (3) relative to a seat part (4) and an unlocking position for adjusting the seat component (3),
wherein the catch fitting (1) comprises:
a fixed flange (6) for attachment to the seat part (4) or to a fixed seat adapter (5),
an adjustable flange (7) for attachment to the seat component (3) and
a by the user about a pivot axis (A) pivotable actuating cam (9) for unlocking the locking fitting (1),
wherein the fixed flange (6) has an outer toothing (12) and the adjustable flange (7) has an internal toothing (14) which, in the locking position, engages with the outer toothing (12) and in the unlocked position out of engagement with the outer toothing (12 ),
characterized in that
by the actuating cam (9) an unlocking means (11) is adjustable, through which the adjustable flange (7) is adjustable, and
the adjustable flange (7) between the locking position and the unlocking position in a radial direction perpendicular to the pivot axis (A) is adjustable.

Description

The invention relates to a locking fitting for a vehicle seat and such a vehicle seat. The catch fitting is in this case arranged in particular between a seat component, preferably the backrest or an armrest, and a seat part of the vehicle seat.

Vehicle seats with a backrest that can be swiveled into different pivoting positions or comfort positions generally enable latching of the backrest in the different pivoting positions. For this purpose locking fittings are known, which are provided between the backrest and the seat part or a seat part fixed adapter. The detent fittings are in this case generally adjustable between a detent position or locked basic position and an unlocked position, wherein the backrest is correspondingly pivotable in the unlocked position in their different pivot positions, and engage in the respective pivot position after return of the detent fitting in the locking position.

The US 5524970 A describes a backrest mechanism with intermeshing gears and two adjustable in the axial direction wedge segments.

In JP 2000125968 A a rotary mechanism is described in which a locking plate is adjustable in an axial direction.

The US 6325458 A describes a rotating mechanism with separate locking members.

In WO 2006/092546 A There is described a rotary mechanism with an eccentric drive which causes an adjustment of the teeth of two gears in diametrically opposed positions.

The US 7380883 A describes a dual gear transmission mechanism having elongated arcuate holes to limit movement of the lock gear.

In US 9205764 A For example, there is described a rotating mechanism having an internal gear with a double set of teeth.

US 9387781 A describes a complex backrest mechanism with many components and two discs, the mechanism being controlled by a pawl means.

Such designs are generally quite complex with many components, with generally significant clearance between the components possible. The individual components are generally complex to form, resulting in a high overall weight.

The invention is based on the object to provide a catch fitting for a vehicle seat and such a vehicle seat, which can be formed with little effort and enable secure locking and unlocking.

This object is achieved by a catch fitting according to claim 1. The dependent claims describe preferred developments. Furthermore, a vehicle seat is provided with such a detent fitting.

Thus, the locking fitting on a fixed flange with an external toothing and an adjustable flange with an internal toothing, which are engaged with each other in the locking position and are released from each other in the unlocked position. The adjustment takes place via a directly or indirectly pivotable by the user actuating cam, which displaces an unlocking means by which the adjustable flange in the radial direction or perpendicular to the pivot axis is disengaged.

Thus, the adjustable flange is adjusted in a radial direction relative to the fixed flange. This means that the axis of the adjustable flange is adjusted relative to the axis of the fixed flange.

Advantageously, the adjustable flange is only adjusted radially, d. H. it is not supplementary axial displacement provided. Thus, a defined adjustment is provided. Since the two flanges are thus not adjusted to each other in the axial direction or the longitudinal direction of the axis, they can be interconnected as a compact unit. The required axial adjustment is basically low; it is basically only necessary that the teeth out of engagement and subsequently come back into engagement, so that only an axial adjustment corresponding to the height of the tooth regions is provided.

Thus, in particular a play or undesired degrees of freedom of the components in the axial direction can be kept low or avoided altogether. The locking fitting can be made compact with few components. The toothings can each be integrally formed on the two flanges, so that a direct latching or locking of the two flanges is possible with each other, without additional intermediate components between the flanges.

The adjustment is via an adjustable in at least the radial direction unlocking means, for. B. an unlocking plate or a release wedge enabled. The unlocking means is in particular only in the radial direction, d. h not additionally adjustable in the axial direction, so that it can be guided defined, z. B. in a guide of the fixed flange, which allows only the linear adjustment of Entriegelungsmittels. The guide can be formed in the fixed flange accordingly by a depression. Due to the safe adjustment and the defined, relatively small displacement of Entriegelungsmittels turn training with few components and safe guidance is possible without too much play.

Advantageously, the actuating cam on an eccentric cam surface which slides along a counter surface of the unlocking means, wherein the counter surface can be formed in particular as a slope or curved surface. Thus, the actuating cam presses the unlocking means in the radial direction advantageously outwards, so that it z. B. after a free travel against a sliding surface of the adjustable flange and the adjustable flange subsequently in the radial outward direction, i. away from the axis, so that the internal teeth of the adjustable flange are disengaged from the external teeth of the fixed flange. Subsequently, the top of the unlocking further remains in sliding contact with the sliding surface of the adjustable flange and allows the pivoting of the adjustable flange, wherein in this pivotal movement thus sliding the sliding surface of the adjustable flange on the top of Entriegelungsmittels.

The latching fitting is used in its locking position for locking an adjustable seat component relative to a seat part; in its unlocked position, however, the seat component relative to the seat part is adjustable. The seat component may in this case be in particular a backrest, which is thus adjustable in its backrest angle after unlocking. Furthermore, the seat component but also be an armrest, which is adjustable according to their unlocking in their inclination.

Advantageously, a pivot axis of the seat component coincides with the pivot axis of the actuating cam.

The fixed flange may be attached directly to the seat part or to a seat-mounted fixed adapter; the adjustable flange is in particular attached directly to the seat component.

After reaching the desired pivot position of the seat component in turn a lock is made by the actuating cam is reset, whereby the adjusting means is moved back inwards and the adjustable flange engages with its internal toothing in engagement with the external toothing of the fixed flange.

For this purpose, the two teeth are to be formed over sufficiently large segment areas, so that a lock in the permissible pivotal positions of the seat component is made possible.

The components can be made small, compact and inexpensive. So z. B. the fixed flange, the actuating cam and possibly the locking means z. B. produced by powder metallurgy.

The inclusion of the actuating cam in the locked basic position or locking position can be done in particular in a locking means, for. B. by clamping or frictional engagement of a suitable surface of the actuating cam. For this purpose, the actuating cam z. B. have a cam with an outer side, which locks back in a normal position in the base position in a receiving surface of the locking means, d. H. is received frictionally or by jamming, and is released on subsequent actuation.

Since only a small displacement of the adjustable flange relative to the fixed flange is required, thus a suitable ratio of the rotational movement of the actuating cam relative to the adjustment of the flange can be formed so that the required masses can be adjusted securely.

• 1 einen Rastbeschlag für einen Fahrzeugsitz entlang der Schwenkachse in auseinandergezogener Darstellung;
• 2 eine Ansicht in axialer Richtung auf den Rastbeschlag in verriegelter Grundstellung, mit einer Ausschnittsvergrößerung;
• 3 eine Ausschnittsvergrößerung entsprechend 2 in entriegelter Stellung; und
• 4 einen Fahrzeugsitz mit dem Rastbeschlag.

The invention will be explained below with reference to the accompanying drawings to an embodiment. Show it:

• 1 a detent fitting for a vehicle seat along the pivot axis in exploded view;
• 2 a view in the axial direction of the locking fitting in locked basic position, with an enlarged detail;
• 3 an enlarged detail accordingly 2 in unlocked position; and
• 4 a vehicle seat with the catch fitting.

A catch fitting 1 is in 1 shown in exploded view or exploded view and serves in an exemplary in 4 shown vehicle seat 2 for locking a backrest 3 opposite a seat part 4 or one on the seat part 4 attached adapter 5 , Here, the catch fitting 1 especially on both sides of the vehicle seat 2 be provided, for example, a connecting shaft or actuating shaft in the transverse direction between the two locking fittings 1 can run. The backrest 3 is after unlocking the catch fitting 1 around the pivot axis A pivotable and in different pivot positions or comfort positions by locking the locking fitting 1 fixable again.

The catch fitting 1 according to 1 a solid flange 6 , in particular for attachment to the seat part 4 or adapter 5 , and an adjustable flange 7 , in particular for attachment to the backrest 3 on. Furthermore, an outer ring 8th provided, which the catch fitting 1 surrounds to the outside, as well as a release cam 9 , a locking plate 10 and an unlocking plate 11 : the pivot axis A runs accordingly through the catch fitting 1 ,

The solid flange 6 has an external toothing 12 on; accordingly, the adjustable flange 7 at an encircling edge in the circumferential direction an internal toothing 14 on. The unlocking plate 11 is in a leadership 16 the solid flange 6 in the radial direction, ie away from the axis A or to the axis A , adjustable and is released by the release cam 9 adjusted, the around the pivot axis A is pivotable, this is the Entriegelungsnocken 9 operated by an actuating shaft, not shown here, or by directly gripping a lever on the Entriegelungsnocken 9 , The adjustable flange 7 is opposite the fixed flange 6 in the radial direction, ie perpendicular to the axis A , adjustable. This is where the adjustable flange engages 7 in the locking position with its internal toothing 14 in the external teeth 12 the solid flange 6 on; in the unlocked position is the adjustable flange 7 with its internal teeth 14 correspondingly out of engagement with the external teeth 12 ,

In the locking position (basic position) is the actuating cam 9 with his cam arm 9a in the lock plate 10 locked. For this purpose, the cam arm 9a in particular with its radial outer surface on a receiving surface 10a the locking plate 10 frictionally lock or clamp. The adjustment of the adjustable flange 7 done by turning the actuating cam 9 , which can be pivoted by the user directly or via a Entriegelungswelle or operating shaft against a spring preload. When swiveling the actuating cam 9 the cam arm releases 9a from the receiving area 10a ; continues to get the actuating cam 9 with its cam surface 9b , ie with its increasing in the direction of rotation radius, against a counter surface 11a the unlocking plate 11 and thus pushes them in the radial direction, ie here in 1 and 2 up. The unlocking plate 11 slides in her leadership 16 the solid flange 6 and pushes, possibly after a free path, with its top 11b against a sliding surface 7a the adjustable flange 7 and pushes the adjustable flange 7 following up, so that the internal teeth 14 the adjustable flange 7 out of engagement with the external teeth 12 the solid flange 6 arrives.

Thus, subsequently, the backrest 2 opposite the seat part 4 or adapter 5 be panned. During this pivoting movement slides the sliding surface 7a the adjustable flange 7 thus on the top 11b the unlocking plate 11 , Corresponding are the top 11b and the sliding surface 7a cylindrical or formed with a uniform curvature to allow this sliding. The axis of the adjustable flange 7 is slightly displaced from the axis of the fixed flange by the radial adjustment.

When locking the user pivots according to the actuating cam 9 back, wherein the spring-biased actuating cam 9 in particular, can be pivoted back by the spring bias, so that its cam surface 9b according pivots with and the unlocking plate 11 releases, in particular by a spring bias radially inward, ie to the pivot axis A back is adjusted so that their top 11b is adjusted back. Accordingly, the adjustable flange arrives 7 from its disguised position and returns with its internal teeth 14 again in engagement with the external teeth 12 the solid flange 6 , This is thus done by the user by adjusting the backrest 2 selected pivot position, so that the internal teeth 14 engaged with the external teeth 12in another angular position. For this purpose, the internal teeth extend 14 and the external teeth 12 over sufficiently large segment areas of the outer periphery of the adjustable flange 7 and the solid flange 6 so that a sufficient engagement of the two gears 12 . 14 in the relevant pivotal positions of the backrest 2 opposite the seat part 4 is ensured. When swinging back the actuating cam passes 9 again with his cam arm 9a in frictional engagement with the receiving surface 10a the locking plate 10 or the cam arm 9a in turn jammed in the receiving area 10a ,

Thus, an unlocking and - after adjusting the pivotal position of the backrest 2 - In turn, achieved a lock, which can be realized with few components and high security can. Here, advantageously only the described adjustments in the radial direction are required; an adjustment of the adjustable flange 7 along the axial direction or the axis A is basically not required.

LIST OF REFERENCE NUMBERS

1

Locking device

2

vehicle seat

3

adjustable seat component, e.g. backrest

4

seat part

5

seat-mounted adapter

6

fixed flange

7

adjustable flange

7a

Sliding surface of the adjustable flange

8th

outer ring

9

actuating cam

9a

cam arm

9b

cam surface

10

locking plate

10a

Receiving surface of the locking plate 10th

11

unlocking

11a

Counter surface of the unlocking plate 11

11b

Top of the unlocking plate 11

12

External toothing of the fixed flange 6

14

Internal toothing of the adjustable flange 7

16

guide

A

swivel axis

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 5524970A [0003]
• JP 2000125968 A [0004]
• US 6325458 A [0005]
• WO 2006/092546 A [0006]
• US7380883A [0007]
• US 9205764 A [0008]
• US 9387781 A [0009]

Claims (14)

Detent fitting (1) for a vehicle seat (2), wherein the detent fitting (1) between a locking position for locking an adjustable seat component (3) relative to a seat part (4) and an unlocking position for adjusting the seat component (3) is adjustable, wherein the detent fitting (1) comprising: a fixed flange (6) for attachment to the seat portion (4) or a fixed seat adapter (5), an adjustable flange (7) for attachment to the seat component (3) and a pivot axis about a user (A) pivotable actuating cam (9) for unlocking the detent fitting (1), wherein the fixed flange (6) has an external toothing (12) and the adjustable flange (7) has an internal toothing (14) which engages in the locking position with the external toothing (12) and in the unlocked position out of engagement with the external toothing (12), characterized in that by the actuating cam (9) a Entriegelungsmi adjustable by which the adjustable flange (7) is adjustable, and the adjustable flange (7) between the locking position and the unlocking position in a radial direction perpendicular to the pivot axis (A) is adjustable. Lock fitting (1) to Claim 1 , characterized in that the unlocking means (11) in the unlocked position with its upper side (11b) against a sliding surface (7a) of the adjustable flange (7) presses or rests, wherein the adjustable flange (7) with its sliding surface (7a) along the Top (11b) is slidably adjustable to set multiple pivot positions. Lock fitting (1) to Claim 1 or Claim 2 , characterized in that the adjustable flange (7) in several pivotal positions in each case with its external toothing (12) in the internal toothing (14) of the fixed flange (6) can be locked. Detent fitting (1) according to one of the preceding claims, characterized in that the unlocking means (11), in particular an unlocking plate (11), in a guide (16) of the adjustable flange (6) in the radial direction is guided sliding or adjustable. Locking fitting (1) according to one of the preceding claims, characterized in that the unlocking means (11) has a counter-surface (11a) formed on its underside for sliding adjustment by a cam surface (9b) of the actuating cam (9), wherein the unlocking means (11 ) is in the pivoting movement of the actuating cam (9) by sliding the cam surface (9b) on the counter surface (11a) in the radial direction adjustable. Detent fitting (1) according to one of the preceding claims, characterized in that the adjustable flange (7) between the locking position and the unlocking position is adjustable only in the radial direction and not along the pivot axis (A). Detent fitting (1) according to one of the preceding claims, characterized in that it further comprises a locking means (10), for. B. a locking plate (10), for locking the actuating cam (9) in the locking position. Lock fitting (1) to Claim 7 , characterized in that the actuating cam (9) in the locking position in a receiving surface (10 a) of the locking means (11) frictionally and / or by clamping is received, for. B. with a radially extending cam arm (9 a), and upon pivoting of the actuating cam (9) from the frictional engagement and / or jamming is solvable. Detent fitting (1) according to one of the preceding claims, characterized in that at least the fixed flange (6), in particular also the actuating cam (9), is made of a powder metallurgical material. Detent fitting (1) according to one of the preceding claims, characterized in that it further comprises an outer ring (8) as a peripheral outer end. Detent fitting (1) according to one of the preceding claims, characterized in that the adjustable flange (7) and the fixed flange (6) are interlocked and the actuating cam (9) and at least the unlocking means (11), preferably also the locking means (10 ) are received between the flanges (6, 7). Detent fitting (1) according to one of the preceding claims, characterized in that the adjustable seat component (3) in the pivot axis of the actuating cam (9) is pivotable. Detent fitting (1) according to one of the preceding claims, characterized in that the adjustable seat component (3) is a backrest (3) or an armrest of the vehicle seat (2). Vehicle seat (2) comprising: a seat part (4), an adjustable seat component, in particular backrest (3) or armrest, and a latching fitting (1) according to one of the preceding claims, which is provided between the seat component (3) and the seat part (4) or a seat part fixed adapter (5) for locking the seat component (3) in the locking position of the detent fitting (1) and Release of the seat component (3) for setting a pivot position in the unlocked position of the detent fitting (1).

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