CN111806319A - Armrest for vehicle seat - Google Patents

Abstract

In order to be able to lock the armrests (4) of the vehicle seat (1) in different support positions with a small angular offset, the invention proposes two latching devices (6, 7) with their Small angular offset of the latching position.

Description

Armrests for vehicle seats

technical field

The invention relates to an armrest for a vehicle seat having the features of the preamble of claim 1 .

Background technique

In motor vehicles, there are armrests for vehicle seats which, in the support position, protrude substantially horizontally forward from the side of the backrest of the vehicle seat like a cantilever, so that in the support position it is laterally beside the backrest And the height is above the seat surface of the vehicle seat so that the person who is intended to sit on the vehicle seat can comfortably support or rest their elbows and/or forearms on the armrests. In many cases, such armrests can be swung up to the side of the backrest of the vehicle seat into a non-use position.

Patent application JP2018-47869A discloses an armrest that can be locked in a support position and a non-use position with a latching device to prevent swinging. The latching device has a locking pawl which is pivotably mounted in the armrest and moves or pivots together with the armrest and which cooperates with a locking wheel which is arranged in a rotationally fixed manner on the backrest of the vehicle seat on the side. The locking wheel has two latching recesses in its circumferential direction, in one of which the latching pawl can be latched into the support position and in the other latching recess in which the latching pawl can be latched into the non-use position of the armrest , and in this way lock the armrest against swinging.

SUMMARY OF THE INVENTION

The object of the present invention is to provide an armrest for a vehicle seat which has a latching position with a small angular offset of the armrest.

According to the invention, this task is solved by the features of claim 1 . The armrest according to the invention is provided for a vehicle seat of a motor vehicle and is preferably mounted on the side of the backrest of the vehicle seat in such a way that in the support position it protrudes forwards from the backrest approximately horizontally and is laterally beside the backrest and Height above the seat surface of the vehicle seat. Spatial directions such as "forward" and "horizontal" refer to the intended installation and use position of the vehicle seat, wherein "forward" designates the direction in which the seat surface protrudes from the backrest. The armrest is arranged at the side of the backrest of the vehicle seat at a distance from the seat surface, so that it is in the support position above the seat surface in height, when the backrest protrudes upwardly from the seat surface either slanted or not Time.

The armrest according to the invention can be pivoted into a non-use position, it can preferably be pivoted up and/or down to the side of the backrest of the vehicle seat about a substantially horizontal axis, so that in the non-use position the armrest is co-located with the backrest extending in the direction.

According to the invention, the armrest has at least two latching devices, which in each case have at least one latching position in which they hold the armrest in the support position against pivoting. The support positions are angularly offset relative to each other in the locking positions of the different locking devices, in which the locking devices hold the armrest. The angular offset of the support position of the armrest is thus smaller than the angular offset of the latched position of the latching device. The armrest according to the invention can be snapped into a plurality of support positions, which are angularly offset relative to each other, against swinging. Each latching position can be implemented securely, so that latching positions with small angular deflections and stable structures can be combined.

Each latching device preferably has a plurality of latching positions that are angularly offset relative to one another, so that a corresponding number of supporting positions of the armrests are angularly offset relative to one another. The at least one latching device preferably has a latching position in which it locks the armrest in a non-use position against pivoting.

The support position in which the latching position of one latching device holds the armrest, in particular the latching position of the at least one other latching means, is angularly offset between the supporting positions in which the armrest is held.

The latching device can be unlocked manually, for example, in order to be able to pivot the armrest.

In one solution of the present invention, the ratchet device is provided as a latching device, the ratchet device, like the flywheel, also allows the armrest to swing in the first direction without unlocking, and the ratchet device locks the armrest in the same manner as the flywheel. The swing in the second direction opposite to the first direction enables the armrest to swing in the second direction only after unlocking. Preferably, the ratchet device locks the armrest from swinging downwards so that the armrest can be used for support in the support position, and allows swinging up into a higher support position and into a non-use position without unlocking.

In particular, the armrest is arranged above the seat surface on the side of the backrest of the vehicle seat so as to be pivotable about a pivot axis, in particular approximately horizontal, by means of a pivot bearing. In an angularly offset manner about the pivot axis of the armrest, the latching device has latching recesses with which one or more detent pawls cooperate, preferably automatically entering one of the latching recesses or more and thus lock the armrest against swinging. The latching recesses are arranged in or in the armrest or are arranged in a fixed position, and, conversely, one or more detent pawls are arranged in or in or at the armrest in a fixed position. The latching device can have, for example, locking wheels which are non-rotating with the armrest or, for example, with the backrest of the vehicle seat. The detent recesses are arranged, for example, on the outer circumference or in the end face of the detent wheel, so that one or more detent pawls enter the detent radially or from the outside or from the inside or axially and at an angle to the pivot axis obliquely. in the recess. The detent pawl can be pivotable or movable, for example.

The latching recess of the at least one latching device can face the pivot axis of the armrest. In this case, the detent pawl of the associated latching device emerges in the direction of the pivot axis, ie enters the latching recess from the inside.

The latching recesses of the different latching devices can be arranged in the circumferential section with an angular offset relative to one another with respect to the pivot axis. For example, the latching recesses of one latching device may be opposite to the latching recesses of the other latching device, or the latching recesses may be offset relative to each other by, for example, an angle of 90°.

All locking devices preferably have a common unlocking element.

One solution provides an unlocking element which can be pivoted about the pivot axis of the armrest. The unlocking element has a circumferentially extending unlocking section which has a slope. This means that the distance of the unlocking section from the pivot axis increases or decreases in the circumferential direction and/or the unlocking section extends in the circumferential direction at an angle to the radial plane of the pivot axis. The unlocking section is, for example, snail-shaped and/or helical-shaped. The associated locking pawl rests on the unlocking section or comes into contact with the unlocking section when the unlocking element is pivoted in the unlocking direction and is disengaged from the latching recess by pivoting the unlocking element in the unlocking direction Moving out, it is in engagement with the latching recess.

The unlocking section can be on the outside on the circumference, on the end face or on the inside, like the inner teeth of a toothed ring, on the circumference of the unlocking element.

The features and feature combinations, embodiments and configurations of the invention mentioned above in the description and the features and feature combinations mentioned below in the description of the drawings and/or drawn in the drawings can only be used in the corresponding description. can also be used in any other combination in principle or can be used alone. Implementations of the invention are also possible without all the features of a dependent claim. Individual features of a claim can also be replaced by other features or combinations of features disclosed.

Description of drawings

The invention is explained in more detail below with reference to the embodiments shown in the drawings. The attached figure shows:

FIG. 1 shows a vehicle seat of a motor vehicle with an armrest according to the invention in a side view;

Figure 2 shows the latching mechanism of the armrest; and

FIG. 3 shows the unlocking element of the latching mechanism of FIG. 2 .

The accompanying drawings are simplified schematic diagrams for understanding and illustrating the present invention.

Detailed ways

FIG. 1 shows a vehicle seat 1 with a seat surface 2 and a backrest 3 , which protrudes from the seat surface 2 , behind the seat surface 2 , slightly inclined rearward and inclined upward. The spatial directions such as "above", "rear-rear" and "horizontal" refer to the illustrated assembly and use positions of the vehicle seat 1 . On the side of the backrest 3 , an armrest 4 is mounted on the backrest 3 above the seat surface 2 at a distance from the seat surface 2 . The armrest 4 can be pivoted about a pivot axis 5 extending horizontally and transversely to the vehicle seat 1 by means of a pivot bearing (not visible in the figures). The armrest 4 has a plurality of support positions and non-use positions which are angularly offset relative to each other about the pivot axis 5, one of which is drawn in solid lines and two in dashed lines in FIG. 1, the non-use positions. The use position, in which the armrest 4 stands up at the side of the backrest 3 , is swung upwards from the support position, and which is also drawn in dashed lines in FIG. 1 . In the support position, the armrest 4 projects forwards from the backrest 3 approximately horizontally or approximately parallel to the seat surface 2 , ie in the same direction as the seat surface 3 .

In order to keep the armrest 4 in the support position, the armrest 4 or the backrest 3 or the driver's seat 1 has two unlockable latches 6 , 7 which can be seen in FIG. 2 . Each latching device 6 , 7 has a detent pawl 8 , 9 which cooperates with a common detent wheel 10 .

The locking wheel 10 is arranged in the armrest 4 coaxially to the pivot axis 5 in a fixed position and relative to the backrest 3 and thus relative to the vehicle seat 1 in a fixed position. In the outer circumferential section of its circumference, the locking wheel 10 has first detent recesses 11 which are angularly offset relative to one another. The angular offset of the first latching recess 11 is less than and preferably not more than twice the width of the first latching recess 11 . In this embodiment, the locking wheel 10 has three first latching recesses 11 in its outer circumference. Implementations with more or fewer latching recesses 11 are also possible (not shown).

The locking wheel 10 has an arc-shaped window 12 which extends in the circumferential direction of the locking wheel 10 in an arc-shaped manner around the pivot axis 5 . In the outer edge of the locking wheel 10 and thus at the inner circumference of the locking wheel 10 , the window 12 has a second latching recess 13 , which also has a small angular offset in the circumferential direction, which angle is offset The displacement is preferably not more than twice the width of the latching recess 13 . In this embodiment, the locking wheel 10 has four second latching recesses 13 , however, there can also be more or fewer latching recesses 13 (not shown). In this embodiment, the second locking recess 13 is opposite to the first locking recess 11 , that is, arranged at an angular offset of 180°. The latching recesses 11 , 13 can, however, also be arranged at other locations, for example on a circumferential section (not shown) of the locking wheel 10 offset by 90° with respect to each other or without an angular offset.

The two detent pawls 8 , 9 are guided in the armrest 4 in a radially displaceable manner relative to the pivot axis 5 by means of schematically drawn sliding guides 14 , 15 and are loaded by corresponding spring elements 16 , 17 . in the locking recesses 11 and 13 . The first detent pawl 8 is loaded from the outside into the first detent recess 11 which is open on the outside, and the second detent pawl 9 is loaded from the inside into the second detent recess 13 which is open on the inside. As can be seen in FIG. 2 , the detent pawls 8 , 9 are arranged such that one of the two detent pawls 8 , 9 abuts the detent wheel 10 between the detent recesses 11 , 13 on the outside or on the inside. , when the other detent pawl 8 , 9 engages in one of the latching recesses 13 , 11 .

By the engagement of the detent pawls 8 , 9 into the latching recesses 11 , 13 , the latching devices 6 , 7 hold the armrest 4 in its respective pivot position. The engagement of the detent pawls 8 , 9 into the detent recesses 11 , 13 is also referred to here as detent position. In this exemplary embodiment, the latching devices 6 , 7 together have seven latching positions in which it holds the armrest 4 in the support position. Referring to the swing position of the armrest 4, the latching position of the first latching device 6 is between the latching positions of the second latching device 7, so that the angular offset of the supporting position of the armrest 4 is smaller than the case of having only one latching device Angle offset below. With the two latches 6 , 7 the support position of the armrest 4 has half the angular offset with one latch. With more than two locking devices 6 , 7 , the distance between the support positions of the armrest 4 can be further reduced.

The first latching device 6 additionally has a third latching recess 18 for the inactive position of the armrest 4 .

In this exemplary embodiment, the locking wheel 10 is stationary and non-rotating relative to the backrest 3 or the vehicle seat 1 , and the sliding guides 14 , 15 of the locking pawls 8 , 9 are stationary in the armrest 4 . . Conversely, it is also possible for the locking pawls 8 , 9 to be arranged stationary with respect to the backrest 3 or the vehicle seat 1 and the locking wheel 10 to be arranged in a rotationally fixed manner with respect to the armrest 4 .

In order to unlock the latches 6 , 7 , the armrest 4 in this exemplary embodiment has a disk-shaped unlocking element 19 which is arranged coaxially with respect to the pivot axis 5 beside the locking wheel 10 and can be rotated about the pivot axis 5 or swing. In FIG. 2 , the unlocking element 19 is located behind the locking wheel 10 in the viewing direction and is drawn in dashed lines. In Figure 3, the unlocking element 19 is drawn as a single part. The unlocking element 19 has a first unlocking section 20 , which is assigned to the first locking pawl 8 , and a second unlocking section 21 , which is assigned to the second locking pawl 9 . In the first unlocking section 21 , the circumferential wall of the unlocking element 19 extends snail-like inwards, ie it reduces the distance to the pivot axis 5 , which can also be understood as the inclination of the unlocking section 20 . Due to its snail-like profile, the first unlocking section 20 pushes the first latching pawl 8 out of the first latching recess 11 when the unlocking element 19 is pivoted in the unlocking direction 22 indicated by the arrow. When the armrest 4 is in the non-use position, the first unlocking section 20 pushes the first detent pawl 8 out of the additional latching recess 18 .

On the opposite side, the unlocking element 19 has a window 23 which extends around the pivot axis 5 in an arcuate manner. The arcuate outer edge of the window 23 in the unlocking element 19 also extends snail-like and forms a second unlocking section 21 which pushes the second locking pawl 9 out of the second locking recess 13 , When the unlocking element 19 is pivoted in the unlocking direction 22 . The second unlocking section 21 thus also has a slope.

By pivoting in the unlocking direction 22 , the unlocking element 19 unlocks the two latching devices 6 , 7 so that the armrest 4 can be pivoted.

In order to pivot the unlocking element 19 in the unlocking direction 22 to unlock the armrest 4 , the armrest 4 has an unlocking lever 24 which is articulatedly connected to the unlocking element 19 via a pull rod 25 . In this embodiment, the unlocking lever 24 is arranged in the front, ie close to the end of the armrest 4 remote from the backrest 3 .

The latching devices 6 , 7 can also be embodied as ratchet devices (not shown). For this purpose, the ends of the detent pawls 8 , 9 facing the latching recesses 11 , 13 are provided with bevels, as is known from the case of door locks. When the armrest 4 is swung in the first direction 26 , the ramps push the pawls 8 , 9 out of the latching recesses 11 , 13 , so that the armrest 4 can be swung in the first direction 26 without unlocking it. In order to pivot the armrest 4 in the opposite direction, the latches 6, 7 must be unlocked. Preferably, the armrest 4 can be swung upwards without unlocking and must be unlocked in order to swing downwards.

List of reference signs

Armrests for vehicle seats

1 vehicle seat

2 seat surface

3 backrest

4 Armrests

5 Swing axis

6 The first locking device

7 Second locking device

8 First stop pawl

9 Second pawl

10 Stop wheel

11 The first locking recess

12 Window Stop wheel

13 Second locking recess

14 First sliding guide

15 Second sliding guide

16 First spring element

17 Second spring element

18 Third locking recess

19 Unlocking element

20 First unlocked section

21 Second unlocking section

22 Unlock direction

23 Window for unlocking components

24 Unlock lever

25 Tie rod

26 First direction.

Claims (10)

1. Armrest for a vehicle seat, which armrest can be pivoted from a supporting position into a non-use position, characterized in that the armrest (4) has at least two releasable latching devices (6, 7) having a plurality of latching positions, and in that the latching devices (6, 7) in each latching position hold the armrest (4) in one supporting position against pivoting, wherein the supporting position of the armrest (4) in different latching positions of one latching device (6, 7) and the supporting position of the armrest (4) in latching positions of different latching devices (6, 7) are angularly offset relative to one another.

2. An armrest according to claim 1, characterized in that the support position of the armrest (4) in one latching position of the first latching means (6, 7) is located between two support positions of the armrest (4) in two latching positions of the second latching means (7, 6).

3. An armrest according to claim 1 or 2, characterized in that the latch device (6, 7) is a ratchet device which allows the armrest (4) to swing in a first direction without unlocking and which locks the armrest (4) to swing in a second direction opposite to the first direction.

4. The armrest as claimed in one or more of the preceding claims, characterized in that the latching device (6, 7) has a latching recess (11, 13) which is arranged at the armrest (4) or is arranged in a positionally offset manner about the pivot axis (5) of the armrest (4) and a catch (8, 9) which is arranged at the armrest (4) or is arranged in a positionally fixed manner and which automatically engages into the latching recess (11, 13) and thereby locks the armrest (4) against pivoting.

5. The armrest as claimed in claim 4, characterized in that one catch (8, 9) is guided movably.

6. An armrest according to claim 4 or 5, characterized in that the latching recess (13) of one latching device (7) faces the pivot axis (5) of the armrest (4), and in that the pawl (9) of this latching device (7) comes out in the direction of the pivot axis (5) of the armrest (4) into the latching recess (13).

7. The armrest as claimed in any of claims 4 to 6, characterized in that the latching recesses (11, 13) of both latching devices (6, 7) are arranged in circumferential sections which are angularly offset with respect to one another with reference to the pivot axis (5) of the armrest (4).

8. The armrest as claimed in any one of the preceding claims, characterized in that the latching devices (6, 7) have a common unlocking member.

9. The armrest as claimed in one of claims 4 to 8, characterized in that one latching device (6, 7) has an unlocking element (19) which can be pivoted about the pivot axis (5) of the armrest (4) and which comprises an unlocking section (20, 21) having a slope which, when the unlocking element (19) is pivoted in an unlocking direction (22), moves the associated detent (8, 9) out of one latching recess (11, 13).

10. The armrest as claimed in claim 9, characterized in that the unlocking section (21) of the unlocking element (19) of one latching device (7) is located at the inner periphery of the unlocking element (19).

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