FR2884189A1 - Slide rail for motor vehicle seat, has control lever with bent pin, and actuating unit fitted on pin to connect unit to lever and disposed to abut against lever`s lug by driving lever in active position when unit is actuated - Google Patents

Abstract

The rail (6) has sliding units (8, 9) slidingly mounted with respect to each other in a longitudinal direction (X). A control lever (15) is pivotably mounted on the unit (8) between rest and active positions. The lever has a pin (21) bent at 90 degree and extending along a transversal direction (Y), and a lug (26) shifted with respect to the pin in the direction (X). An actuating unit (7) is fitted on the pin to connect the unit (7) to the lever and is disposed to abut against the lug by driving the lever in the active position when the unit (7) is actuated in an actuating direction (A).

Description

Slide for vehicle seat, set of slides and seat

  vehicle comprising such a set of slides.

  The present invention relates to slideways for vehicle seats, slide assemblies and vehicle seats comprising such slide assemblies.

  More particularly, the invention relates to a slide for a vehicle seat, comprising: - first and second slide members slidably mounted relative to each other in a longitudinal direction, - a lock adapted to immobilize the first and second slide elements, - a control lever pivotally mounted on the first slide member between a rest position where said control lever leaves the lock in the locked position and an active position where said control lever unlocks the lock, said control lever comprising a lug which extends in a transverse direction substantially perpendicular to the longitudinal direction, and said control lever further comprising at least one stop finger offset from said lug in the longitudinal direction, and a connected actuating member at the control lever at least by said lug and arranged to abut against said goal finger e by driving the control lever in the active position when the control member is actuated in an actuation direction.

  Document FR-A-2 778 613 describes an example of such a slide in which the assembly of the actuating member on the control lever is made by welding.

  The present invention is intended in particular to further improve the slides of this type, in particular to facilitate assembly.

  For this purpose, according to the invention, a slide of the kind in question is characterized in that the lug is bent and the actuating member is fitted on said lug.

  Thanks to these arrangements, it considerably simplifies the assembly of the control member on the control lever while obtaining a high mechanical strength of the assembly between the actuating member and the control lever (in particular, avoids or at least strongly limits the risk of disengagement of the actuating member relative to the lug). In addition, this assembly also allows, optionally, to allow a pivoting of the control member on the lug in the direction opposite to the direction of actuation, which may be useful with certain vehicle seats in particular to allow a retraction of the actuator in certain configurations of the seat.

  In various embodiments of the method according to the invention, one or more of the following arrangements may optionally be used: the lug is bent substantially at 90 degrees; said transverse direction is substantially horizontal, the lug having a first leg extending in said transverse direction and a second leg extending substantially in the longitudinal direction opposite the actuating member; - said transverse direction is substantially horizontal, the lug having a first branch extending in said transverse direction and a second branch which extends substantially vertically; the actuating member is elastically biased in the actuating direction, abutting against the stop finger; - The actuating member is elastically biased by a spring wire which also urges the control lever in the angular direction opposite to the actuating direction; - The control lever is pivotally mounted on a plate attached to the first slide member, said spring wire bearing on said plate.

  Furthermore, the invention also relates to a set of slides comprising two parallel rails as defined above, the actuating member being common to both slides. Said actuating member may in particular have a general U shape, comprising a base adapted to be taken by a user and two lateral branches which are each connected to the control lever of one of the slides. The lateral branches of the actuating member may be in bending stress, which eliminates mounting clearance and therefore noise.

  Finally, the invention also relates to a vehicle seat comprise a seat fixed to the first slide elements of a set of slides as defined above.

  Other features and advantages of the invention will become apparent from the following description of two of its embodiments, given by way of non-limiting examples, with reference to the accompanying drawings.

  In the drawings: FIG. 1 is a schematic view of a seat that can be equipped with a set of slides according to the invention, FIG. 2 is a perspective view of the set of slides bearing the seat of the seat. 1, in a first embodiment of the invention, FIGS. 3 and 4 are detailed perspective views showing one of the slides of the slide assembly of FIG. 2, FIG. 1 is an exploded view of the slide control device of FIGS. 3 and 4, and FIG. 6 is a detailed perspective view showing a portion of the control device of one of the slideways, in a second embodiment of FIG. 'invention.

  In the different figures, the same references designate identical or similar elements.

  FIG. 1 represents a motor vehicle seat 1 which comprises a backrest 2 mounted on a seat 3. The seat 3 is fixed on the floor 4 of the vehicle by means of a set of slides 5 which allows the seat 1 to slide on the floor 4 in a longitudinal direction X. The set of slides 5, which is clearly visible in Figure 2, comprises two parallel rails 6 extending in the longitudinal direction X, and an actuating member 7 common to the two slides, for example in the form of a generally U-shaped rudder. Each of the slides 6 comprises a first slide member 8 which carries the seat 3 and which is slidably mounted on a second fixed slide member 9 to the floor 4. The first and second slide members 8, 9 may be for example in the form of two sheet metal profiles nested one inside the other.

  On the horizontal upper web 11 of the first slide element, a portion of a slide lock 10 protrudes and which is displaceable vertically along the Z axis between: a locked locked position, visible in FIGS. 3 and 4; wherein the latch 10 immobilizes the first slide member 8 relative to the second slide member 9, and an unlocked position (not shown) where the latch 10 is moved downwardly allowing relative sliding between the first and second slide members 8, 9.

  The lock 10 can be of any known type. This may be for example a lock similar to that described in the document FR-A-2 778 613 mentioned above or of the type described in document FR-A-2 852 896.

  On the upper web 11 of the first slide element is furthermore fixed a support plate 12 which may for example be in the form of an L-shaped sheet metal part comprising a base 13 fixed to the upper web 11 the first slide member for example by welding, riveting or otherwise, and a side wing 14 extending in the vertical plane (X, Z).

  On the lateral flange 14 of the support plate is pivotally mounted a control lever 15, which rotates about an axis of rotation parallel to a transverse horizontal direction Y perpendicular to the X, Z directions. The control lever 15 can be present in the form of a cut sheet metal part and folded comprising a vertical core 16 parallel to the side flange 14 of the support plate.

  As can be seen in more detail in FIG. 5, the vertical core 16 has an intermediate portion with a preferably non-circular hole 17 (for example, with a half-moon shape, as in the case shown in FIGS. drawings). In this hole 17 is engaged a pivot 18, made for example of metal, which is secured to the control lever 15 by interlocking in the hole 17 and crimping, the pivot 18 being pivotally mounted on the lateral flange 14 of the plate of support.

  The vertical core 16 of the control lever 15 extends rearward substantially parallel to the longitudinal direction X from the hole 17, to a rear end 19. At this rear end, the lower edge of the vertical core 16 is extended substantially at right angles by a horizontal flange 20 which is disposed above the protruding portion of the latch 10 and which is adapted to press on the latch 10 by unlocking it when the control lever 15 pivots in a angular direction of actuation A from the rest position visible in Figures 3 and 4 to an active position (not shown).

  The horizontal flange 20 extends along the Y axis to a free end which is extended by a lug 21 bent, for example bent substantially 90. In the example shown in FIG. 4, the lug 21 comprises a first branch 22 extending in the transverse direction Y opposite the vertical core 16, this first branch 22 being extended towards the rear, substantially parallel to the longitudinal direction X, by a second branch 23.

  Moreover, the vertical core 16 of the control lever 15 extends forwardly in the X direction from the hole 17, to a front end 24 where the lower edge of the core 16 is extended according to the Y direction by a first horizontal tab 25 parallel to the horizontal flange 20, while the upper edge of the vertical core 16 is extended by a second horizontal flange 26 parallel to the first tab 25.

  The control lever 15 of each slideway 6 is connected to one of the lateral branches 28 of the actuating member 7. As previously indicated, the actuating member 7 has the general shape of a U, with a base 27 and the two side branches 28 (see Figure 2).

  The base 27 is disposed under the front end of the seat 3 so that it can be grasped by a user and pulled upwards, which makes the control levers 15 of the two slides slide in the actuating direction A in simultaneously unlocking both slides.

  As can be seen in more detail in FIGS. 3 to 5, the actuating member 7 can be formed by a metal tube whose rear ends 29 of the lateral branches are flattened in two parallel vertical planes X, Z. Each of these rear ends comprises a hole 30 which is fitted on the curved lug 21 of the corresponding control lever 15. In addition, each lateral branch 28 of the control member passes between the first and second tabs 25, 26 of the control lever 15.

  The interlocking of the rear end 29 on the lug 21 may advantageously allow a certain freedom of movement of the control member 7 with respect to the control levers 15, by pivoting around the lug 21.

  In the rest position, each lateral branch 28 of the actuating member 7 is held in abutment under the second tab 26 of the corresponding control lever 15 which thus forms an abutment finger, by means of a spring wire 31 (FIGS. 3 to 5).

  On the other hand, in certain situations, and in particular when the seat carried by the slides must be placed in a retracted position where its bulk is reduced to a minimum, the actuating member 7 can pivot in the angular direction B opposite the direction A. aforementioned, to a retracted position (not shown) where its lateral branches 28 abut against the first leg 25 of the control lever 15.

  As shown in FIGS. 4 and 5, the spring wire 31 may comprise a first branch 32 extending forwards substantially parallel to the longitudinal direction X to a bent end 33 which passes under the corresponding lateral branch 28 of the actuating member for elastically biasing it towards the second leg 26 of the control lever.

  Furthermore, the spring wire 31 also comprises an intermediate portion 34 which is secured to the pivot 18 and therefore with the control lever 15, this intermediate portion 34 being able to be engaged for example in a slot 35 formed in the pivot 18 (FIG. ).

  This intermediate portion 34 is extended, if necessary after one or more turns around the pivot 18, by a second branch 37 which extends forwardly to a bent portion 38 penetrating into an opening 39 formed in the wing side 14 of the support plate. The second branch 37 resiliently biases the pivot 18 and the control lever 15 in the angular direction B. The assembly of the slide assembly 5 shown in FIG. 2 can proceed as follows: - the rear end 29 is engaged of one of the lateral branches of the actuating member 7 on the lug 21 of the control lever of one of the slides, by a pivoting movement of the actuating member 7, then engaging the lug 21 of the other slide in the hole 30 of the rear end of the other side branch of the actuating member, by a pivoting movement of said other slide.

  Advantageously, when the two slides are fixed to the floor of the vehicle, the lateral branches of the actuating member may be in bending stress, which eliminates or decreases the mounting clearance of the actuating member on the levers of control and control levers on the slides. This reduces the rattling noise due to the slides during the driving of the vehicle.

  In the second embodiment of the invention, shown in FIG. 6, all the elements of the slide assembly are identical or similar to those described above, except that the second branch 23 of each lug extends upward along the Z axis instead of extending backward.

Claims (11)

  A slide for a vehicle seat, comprising: - first and second slide members 5 (8, 9) slidably mounted relative to one another in a longitudinal direction (X), - a bolt (10) adapted for immobilizing the first and second slide members (8, 9), - a control lever (15) pivotally mounted on the first slide member (8) between a rest position where said control lever leaves the latch (10) in the locked position and an active position where said control lever (15) unlocks the latch (10), said control lever comprising a pin (21) which extends in a transverse direction (Y) substantially perpendicular to the longitudinal direction ( X), and said control lever further comprising at least one stop finger (26) offset from said lug (21) in the longitudinal direction (X), and an actuating member (7) connected to the control lever (15) at least by said lug (21) and daring to abut against said stop finger (26) by driving the control lever (15) in the active position when the control member (7) is actuated in an actuating direction (A), characterized in that the pin (21) is bent and the actuating member (7) is fitted on said pin.   2. Slide according to claim 1, wherein the lug (21) is bent substantially at 90 degrees.   3. Slide according to claim 2, wherein said transverse direction (Y) is substantially horizontal, the lug having a first leg (22) extending in said transverse direction (Y) and a second leg (23) which extends substantially in the longitudinal direction (X) away from the actuating member (7).   4. Slide according to claim 2, wherein said transverse direction (Y) is substantially horizontal, the lug (21) having a first leg (22) extending in said transverse direction (Y) and a second leg (23). which extends substantially vertically.   5. Slide according to any one of   preceding claims, wherein the   actuator (7) is resiliently biased in the actuating direction (A), abutting against the stop finger.   6. Slide according to claim 5, wherein the actuating member (7) is elastically biased by a spring wire (31) which also urges the control lever (15) in the opposite angular direction (B) to the direction actuator (A).   7. Slide according to claim 6, wherein the control lever (15) is pivotally mounted on a plate (12) attached to the first slide member (8), said spring wire (31) bearing on said plate (12). ).   8. A slide assembly comprising two parallel rails (6) according to any one of the preceding claims, the actuating member (7) being common to both slides (6).   A slide assembly as claimed in claim 8, wherein said actuator (7) is generally U-shaped, comprising a base (27) adapted to be lifted by a user and two lateral branches (28) which are each connected to the control lever (15) of one of the slides.   The slide assembly of claim 9, wherein the side branches (28) are bending-strained.   Vehicle seat comprises a seat (3) fixed to the first slide elements (8) of a slide assembly (5) according to any one of claims 8 to 10.