FR2996180A1 - SLIDE FOR VEHICLE SEAT AND VEHICLE SEAT COMPRISING SUCH A SLIDER - Google Patents

Abstract

A slider (10) for a vehicle seat, comprising: - first (11) and second (12) profiles, - a latch (40) comprising an elastically deformable blade (41) extending between a fastening portion (42) and a locking portion (43), said fixing portion (42) being attached to the first profile (11) and said locking portion (43) being movable between a locked position to which it is resiliently biased, and an unlocked position, in wherein the latch (40) further comprises at least one bracket (45) extending from a longitudinal edge of the attachment portion (42) of the blade (41), said bracket (45) being adapted to be attached to the first profile (11).

Description

The invention relates to a slide for a vehicle seat and to a vehicle seat comprising such a slideway.

In particular, the invention relates to a slide for a vehicle seat of the type comprising: a first profile and a second profile adapted to be secured to one with the vehicle and the other with the seat, said first and second profiles; being slidably mounted relative to each other in a longitudinal direction, - a latch comprising an elastically deformable blade, said blade extending in the longitudinal direction between a fastening portion and a locking portion, said fastening portion being fixed to the first profile and said locking portion being movable in a vertical direction perpendicular to the longitudinal direction between a locked position in which said locking portion is engaged with the second section so as to block the first profile with respect to the second section, and an unlocked position in which said locking portion is Cartee the second profile so as to allow sliding of the first section from the second section, said locking portion being elastically biased toward the locked position, the blade having two opposite longitudinal edges extending in the longitudinal direction. A slide of this type is known in particular from document FR 2 768 670. In the known slide, the fastening portion of the blade of the lock is offset vertically relative to the rest of the blade. The blade then has two transverse elbows and a substantially vertical portion connecting the attachment portion to the rest of the blade. This substantially vertical portion is perforated to allow the passage of a leg of a spreader for passing the locking portion of the locked position to the unlocked position. The lock of such a slide has a complex structure requiring precise manufacture, and may have brittleness problems that reduce the longevity of the lock and the slide. In addition, the fixing of the latch by means of two stampings on the profile so as to press the edges of the fixing part involves a complex assembly and thus increases the assembly time. The invention aims to overcome the problems mentioned above.

For this purpose, according to a first aspect, the invention provides a slide of the aforementioned type in which the lock further comprises at least one fixing lug extending generally in the vertical direction from one of the longitudinal edges of the portion of fixing the blade, said fixing lug being adapted to be fixed to the first section. Thus, the lock according to the invention may comprise a blade which extends substantially in a plane and whose structure is simplified and easy to manufacture. The resistance of the lock is, moreover, improved because of the better distribution of the stresses exerted on the blade relative to a lock comprising a blade having one or more transverse bends where the stresses are concentrated when the blade is deformed. The longevity of the lock and the slide is improved. The fixing lug and the first profile may comprise complementary fastening members consisting of at least one opening provided on one of the elements chosen from the fixing lug and the first profile, and at least one resiliently deformable snap-fitting tongue adapted to to be able to penetrate into the opening on the other element selected from the bracket and the first section. These arrangements make it possible in particular to simplify the mounting of the slide by providing a fastening of the lock on the first profile snap by moving the lock and the profile relative to each other in one direction. These arrangements also make it possible to improve the adaptability of the lock to different types of slide and in particular to different profile dimensions. The same lock can thus be used for profiles of different dimensions which only the position of the fasteners must be adjusted.

The first profile may have a substantially U-shaped section, with a core and two wings extending perpendicularly from the core, facing one another, the lock comprising two fixing tabs extending opposite each other. each other respectively from the longitudinal edges of the fastening portion of the blade, said fastening tabs being respectively fixed to the wings of the first section.

The slide may further include an actuator adapted to move the locking portion of the blade from the locked position to the unlocked position. In one embodiment, the first profile may have an opening opposite the locking portion of the blade, and the actuating device may comprise a stud mounted on the locking portion of the blade and extending therethrough. from the opening in the locked position of the locking portion. In another embodiment, the first and second profiles may define between them an interior space in which the lock is placed, and the actuating device may comprise a spreader having a branch, said branch extending generally in the longitudinal direction. between a first end disposed outside the inner space and a second end disposed within the interior space. In this embodiment, the entire blade is located under the branch of the rudder. The actuating device may then further comprise a support provided with a housing open in the longitudinal direction and adapted to accommodate the second end of the branch, said support being fixed to the bracket of the lock. In particular, the support may comprise at least one fixing wall delimiting the housing perpendicularly to the longitudinal and vertical directions, said fixing wall being arranged facing the lock fixing lug, the fixing wall and the fixing lug comprising complementary fixing members constituted by at least one opening formed on one of the elements chosen from the fixing wall and the fixing lug, and at least one resiliently deformable latching tongue adapted to be able to penetrate into the opening on the another element chosen from the fixing wall and the fixing lug. In addition, the second end of the rudder leg may comprise at least one notch, and the support may comprise at least one resiliently deformable snap tongue extending into the housing and adapted to penetrate the notch. The support may comprise a bottom delimiting the housing in the vertical direction and disposed near the blade of the lock, and a guide surface opposite the bottom, the guide surface being inclined towards the bottom from a bearing portion arranged near the locking portion of the lock blade, toward a stop portion arranged at a distance from the lock portion of the lock blade, the bearing portion of the guide surface bearing against an inner surface the first section defining the interior space in the vertical direction, so as to guide a pivoting of the branch relative to the first section about an axis perpendicular to the longitudinal and vertical directions. According to a second aspect, the invention provides a vehicle seat comprising a seat and at least one slide according to any one of the preceding claims, the seat being mounted on the slideway. Other objects and advantages of the invention will appear on reading the following description of particular embodiments of the invention given by way of non-limiting example, the description being made with reference to the appended drawings in which: Figure 1 is a side view representation of a vehicle seat mounted on a vehicle floor via a slide system; - Figure 2 is a perspective representation of the slide system of Figure 1, the slide system comprising two rails according to a first embodiment of the invention; FIG. 3 is a partial representation in longitudinal section of one of the slides of the slide system of FIG. 2, illustrating a lock comprising a blade extending between a fixing portion attached to one of the profiles of the slide. and a locking portion displaceable relative to the other section of the slideway for selectively locking and permitting sliding of the profiles, the locking portion being actuable by a pad mounted on the locking portion; - Figure 4 is a partial representation in a top view of the slide of Figure 2; - Figure 5 is a partial cross-sectional representation along the line referenced V-V in Figure 3 of the slide of Figure 2, illustrating the fixing portion of the latch snapped into the profile; - Figure 6 is a partial longitudinal sectional representation of a slide according to the second embodiment of the invention, the locking portion being in a locked position and operable by a branch of a spreader inserted between the profiles ; - Figure 7 is an enlarged representation of the slide of Figure 6, illustrating a support housing an end of the arm of the rudder; - Figure 8 is a representation in cross section along the line VIII-VIII in Figure 7 of the slide of Figure 6, illustrating the support latched on the spreader; - Figure 9 is a cross-sectional representation along the line IX-IX in Figure 7 of the slide of Figure 6, illustrating the support latched on the fastening part of the lock; - Figure 10 is a partial longitudinal sectional representation of the slide of Figure 6, illustrating the locking portion in an unlocked position. In the figures, the same references designate identical or similar elements. Figure 1 shows a seat 1 mounted on a horizontal floor 4 of a vehicle. The seat 1 comprises a seat 2, which extends generally horizontally, and a backrest 3, which is mounted on the seat 2 and which extends generally in a vertical direction Z perpendicular to the floor 4. The seat 2 is mounted on the floor 4 by means of a system of slides 5 to allow a displacement of the seat 1 in a longitudinal direction X horizontally, forwards and backwards, with respect to the floor 4.

The slide system 5 shown in Figure 2 comprises two parallel rails 10 extending in the longitudinal direction X and spaced apart from each other in a transverse direction Y horizontal, perpendicular to the longitudinal direction X. Each of the slides 10 comprises a first section 11, mobile, secured to the seat 2 and a second section 12, fixed, secured to the floor 4 of the vehicle. In other embodiments, the first section could be secured to the floor 4 of the vehicle and the second section could be secured to the seat 2. In addition, the slide system 5 could comprise a single slide 10 or more than two In the embodiments shown, the fixed profile 12 has a substantially U-shaped section open upward, with a horizontal base resting on the floor 4 of the vehicle, and two wings 20 extending vertically from the base 15, facing one another. In particular, the base 15 has a flat horizontal central portion 16 in contact with the floor 4 of the vehicle, and two substantially horizontal projections 17 which are arranged on either side of the central portion 16 away from the floor 4. Each of the wings 20 comprises a vertical section 21 which extends from one of the projections 17 to one end, and a reentrant trough 22 which extends from the end of the vertical section 21 to an edge free 23, being folded internally, that is to say in the direction of the trough 22 of the other flange 20, towards the base 15. Open slots 24 in the vertical direction Z are formed on the free edge 23 troughs 22, being spaced evenly over at least a portion of the length of the fixed profile 12. The movable section 11 also has a substantially U-shaped section. The section of the movable section 11 has, in particular, a horizontal core 30 , and two wings extending 35 green icalement from the soul 30, facing one another. In particular, each of the wings 35 comprises a vertical section 36 which extends from the core 30 to one end, and a flap 37 which extends from the end of the vertical section 36 to a free edge, being folded on the outside, that is to say opposite the flap 37 of the other wing 35, towards the web 30. On each wing 35, the vertical section 36 and the flap 37 define a longitudinal hollow in which windows open in the vertical direction Z and equidistant are formed. The movable section 11, inverted, that is to say open downwards, is mounted between the wings 20 of the fixed profile 12 with the core 30 placed opposite and at a distance from the base 15 and each of the flaps 37 penetrating between the vertical section 21 and the trough 22 of one of the wings 20 of the fixed profile 12. The free edge 23 of the trough 22 of each of the wings 20 of the fixed profile 12 is then disposed in the longitudinal recess formed by the vertical section 36 and the flap 37 of the corresponding flange 35 of the movable section 11. Rolling members, such as balls, are arranged in raceways formed between the troughs 22 of the fixed profile 12 and the flaps 37 of the profile. movable 11, to allow sliding in the longitudinal direction X of the movable section 11 relative to the fixed profile 12. The core 30 and the vertical sections 36 of the movable section 11 define with the base 15 of the fixed profile 12 an interior space in which a latch 40 is arranged for, d in a locked position, close the movable section 11 relative to the fixed section 12 in order to maintain the seat 1 in a desired longitudinal position, and, in an unlocked position, allow the sliding section 11 to slide relative to the fixed profile 12 in order to adjust the longitudinal position of the seat 1. In Figures 3 to 5, the latch 40, made for example of folded sheet metal, comprises an elastically deformable blade 41 extending substantially in a horizontal plane XY. The blade 41 has an attachment portion 42 and a locking portion 43 respectively in the vicinity of first 41a and second 41b opposite ends, spaced from each other in the longitudinal direction X. The blade 41 has two longitudinal edges 41c opposite extending in the longitudinal direction X.

On the attachment portion 42 of the blade 41, the latch 40 further comprises two fastening tabs 45 extending in vertical planes XZ, opposite one another, respectively from the longitudinal edges 41c of the blade 40. The fastening portion 42 thus constitutes a U-shaped casing. In a variant, depending in particular on the geometry of the profiles used, the latch 40 could have a single fixing lug 45 along one of the longitudinal edges 41c. of the attachment portion 42 of the blade 41. The latch 40 could also comprise more than two suitably arranged. In addition, each of the brackets 45 is illustrated, in the embodiment shown, with a single wall extending in a vertical plane XZ. As a variant, the fixing lug 45 could extend globally in the vertical direction Z, that is to say present an edge, free or not, arranged at a distance along the vertical direction Z of the blade 41. The wall generally vertical of the bracket 45 could also be extended, for example by a substantially horizontal wall. Each of the fixing lugs 45 comprises fastening members of the lock 40 to the movable profile 11. In particular, the fastening members are constituted by resiliently deformable latching tongues 46 projecting from an outer surface of the fastening lug. 45 to be placed facing an inner surface of the movable section 11. On each fixing lug 45, two detent tabs 46 obtained by cutting and deformation of a portion of the fixing lug 45 are arranged to distance from each other in the longitudinal direction X.

In the embodiment shown, the latch 40 is fixed to the movable profile 11 by inserting the fastening portion 42 between the flanges 35 of the movable section 11. The latter then has, on the flanges 35, openings 48 complementary to the tabs d. snap and adapted to receive them. In particular, by pushing the fixing portion 42 between the flanges 35 of the movable section 11, the detent tabs 46 are deformed inwards until they reach the openings 48 in which they can extend under the effect of their elasticity. The fixing lugs 45 are thus fixed respectively to the wings 35 of the movable section 11. As a variant, the latching of the latch 40 on the first section could be implemented in any other appropriate manner and, in particular, by means of a or several snap-fastening tongues carried by one or the other of the elements chosen from the fastening tab or tabs 45 of the latch 40, on the one hand, and the mobile section 11, on the other hand, the tabs of snap engagement cooperating with one or more openings on the other member selected from the one or more tabs 45 of the latch 40, on the one hand, and the movable section 11, on the other hand. The invention is, moreover, not limited to snap fastening of the attachment portion 42 of the latch 40 on the movable section 11. Any other type of attachment, including implementing additional fasteners on the bracket and the corresponding profile could be provided. The latch 40 could, moreover, be fixed on the fixed profile 12. Opposite the attachment portion 42, the locking portion 43 is provided with notches 47, three in the embodiment shown, extending in the transverse direction Y, equidistant from each other, from each of the longitudinal edges 41c of the blade 41. The locking portion 43 is arranged so that the notches 47 can engage in the notches 24 of the wings 20 of the fixed profile 12, passing through the windows of the wings 35 of the movable section 11. The blade 41 is shaped so that in the absence of external stress, the locking portion 43 is in a locked position in which the notches 47 engage in the notches 24 of the wings 20 of the fixed profile 12. The latch 40 then blocks the movable section 11 relative to the fixed profile 12. The locking portion 43 can be moved in the vertical direction Z, by means of stress acting on the locking portion 43 and leading to a deformation of the blade 41, to an unlocked position in which it is spaced from the fixed profile 12, the notches 47 being disengaged from the notches 24.

The movable section 11 can then slide relative to the fixed profile 12 in the longitudinal direction X. When the bias is released, the locking portion 43 automatically returns due to the elastic return to the locked position. To exert the biasing passing the locking portion 43 from the locked position to the unlocked position, the slideway 10 may be equipped with an actuating device. In the first embodiment shown in Figures 2 to 5, the second end 41b of the blade 41 is bent so as to have a return 51 away from the rest of the blade 41 in the vertical direction Z and directed towards the first end 41a. The actuating device comprises a stud 50 mounted on the return 51 and extending through an opening 52 formed on the web 30 of the movable section 11 in the locked position of the locking portion 43.

A damper 55 for absorbing the noise produced by vibrations or when locking the slide 10 can be provided on the return 51 of the blade 41 so as to be in contact with the movable section 11 in the locked position of the locking portion 43. Figures 6 to 10 show a slide 10 'according to a second embodiment which differs mainly from the slideway 10 of the first embodiment in that the actuating member for moving the locking portion of the locked position to the unlocked position comprises a spreader 60. The fixed profiles 12 and movable 11 and the latch 40 having structures and arrangements similar to those described above in connection with the first embodiment will not be described again. Reference is made to the description which has already been made below for more details. The spreader 60 has a generally U-shaped having two parallel branches 61 which each extend from a first end 61a connected to a base to a second end, free, 61b. Each of the branches 61 is inserted into the interior space between the fixed and mobile profiles 12 of one of the slides 10 'so that the branch 61 extending generally in the longitudinal direction X with the first end 61a disposed in outside the inner space and the second end 61b disposed within the interior space. The actuating device further comprises a support 65 provided with an open housing in the longitudinal direction X and adapted to house the second end 61b of the branch 61. In FIG. 7, the support 65, made for example of sheet metal folded, comprises a housing 66 and a lever 67 adjoining the housing 66 in the longitudinal direction X.

The casing 66 has a generally U-shaped shape with a bottom 68 extending in a horizontal plane XY and two fixing walls 69 extending in vertical planes XZ facing one another from longitudinal edges. The bottom 68 delimits the housing in the vertical direction Z and the fixing walls 69 delimit the housing in the transverse direction Y. Alternatively, the support 65 could comprise one or more attachment walls 69. The bottom 68 of the housing 66 extends into the lever 67 to form the bottom.

The fixing walls 69 each have a free edge 70 opposite the bottom 68, a bearing portion 71 located near the lever 67 is arranged at a distance from the bottom 68 greater than that of a stop portion 72 located at a distance The free edges of the attachment walls 69 thus define a guide surface 70 inclined towards the bottom 68 from the bearing portion 71 arranged near the lever 67 towards the abutment portion 72 arranged at a distance from the Lever 67. The inclination of the guide surface 70 with respect to a horizontal plane XY defines an unlocking angle as will be apparent from the following description. As shown in FIG. 8, each attachment wall 69 of the support 65 comprises two resiliently deformable latching tongues 75 extending into the housing. The detent tabs 75 obtained by cutting and deformation of a portion of the attachment wall 69 are arranged at a distance from each other in the longitudinal direction X. Two pairs of notches 76 are provided on the second end 61b of the branch 61 of the spreader 60 to be able to receive the detent tabs 75. As a variant, one or more two detent tongues 75 could be arranged on each fastening wall 69 or on any other part of the support 65 to cooperate with one or more complementary notches formed on the branch 61 of the spreader 60. In addition, as shown in Figure 9, each of the fastening walls 69 comprises fasteners of the support 65 to the attachment portion 42 of the lock 40 In particular, the fasteners consist of resiliently deformable latching tongues 73 projecting from an outer surface of the fastening wall 6. 9 intended to be placed opposite an inner surface of one of the fixing lugs 45 of the latch 40. On each fixing wall 69, a detent tongue 73 obtained by cutting and deforming a portion of the fixing wall 69 is provided. The support 65 can thus be fixed to the attachment portion 42 of the latch 40 by inserting the housing 66 of the support 65 in the housing of the locking portion 42 of the latch 40, between the fixing lugs 45. The fixing lugs 45 comprise then respectively complementary openings 74 of the detent tabs 73 and adapted to receive them. In particular, by pushing the housing 66 of the support 65 between the fastening tabs 45 of the latch 40, the detent tabs 73 are deformed inwards until they reach the openings 74 in which they can be located. extend under the effect of their elasticity. The fixing walls 69 of the support 65 are thus fixed respectively to the fixing lugs 45 of the latch 40.

Alternatively, the latching and more generally the fixing of the support 65 on the attachment portion 42 of the latch 40 could be made in any other appropriate manner. The bottom 68 of the support 65 is disposed, at the housing 66, near the blade 41 of the lock 40 and, at the lever 67, in contact with the locking portion 43 of the blade 41. The lock 40 can then be mounted on the movable section 11 snap as described above. The bearing portion 71 of the guide surface 70 of the support 65 is then resting against an inner surface of the core 30 of the movable section 11 delimiting the interior space in the vertical direction Z. The abutment portion 72 is to it at a distance from the inner surface of the web 30 of the movable section 11 (FIG. 7). The second end 61b of the limb of the spreader 60 can be fitted into the support 65 and be snap-fastened as previously described. As shown in FIG. 10, when a bias in the direction of the arrow F is exerted on the first end 61a of the branch 61 of the spreader 60 by a user wanting to adjust the longitudinal position of his seat 1, a pivoting of the branch 61 around a transverse axis is guided by the bearing portion 71 of the guide surface of the support 65. The pivoting continues until the abutment portion 42 of the guide surface 70 of the support 65 abuts against the web 30 of the movable section 11. In doing so, the second end 61a of the branch 61 moves the locking portion 43 of the lock 40 towards the base 15 of the fixed profile 12, via the lever 67 of the support 65. The locking portion 43 moves to the unlocked position. When the bias is released, the locking portion 43 of the latch 40 is biased to the locked position.

Claims (11)

REVENDICATIONS1. Slide (10; 10 ') for a vehicle seat (1), comprising: - a first profile (11) and a second profile (12) adapted to be secured together with the vehicle (4) and the other with the seat (1), said first (11) and second (12) profiles being slidably mounted relative to each other in a longitudinal direction (X), - a latch (40) comprising a blade (41) elastically deformable said blade (41) extending in the longitudinal direction (X) between a fixing portion (42) and a locking portion (43), said fixing portion (42) being fixed to the first profile (11) and said locking portion (43) being movable in a vertical direction (Z) perpendicular to the longitudinal direction (X) between a locked position in which said locking portion (43) is engaged with the second section (12) so as to block the first profile (11) relative to the second section (12), and a position unlocked in which said locking portion (43) is spaced from the second profile (12) so as to allow sliding of the first section (11) relative to the second profile (12), said locking portion (43) being resiliently biased towards the locked position, the blade (41) having two longitudinal edges (41c) opposite extending in the longitudinal direction (X), said slide (10; 10 ') being characterized in that the latch (40) further comprises at least one fixing lug (45) extending generally in the vertical direction (Z) from one of the longitudinal edges (41c) of the portion of fixing (42) of the blade (41), said fixing lug (45) being adapted to be fixed to the first profile (11). 2. Slide (10; 10 ') according to claim 1, wherein the bracket (45) and the first section (11) comprise complementary fastening members consisting of at least one opening (48) provided on one elements chosen from the fixing lug (45) and the first profile (11), and at least one resiliently deformable latching tongue (46) adapted to be able to penetrate into the opening (48) on the other element chosen from the bracket (45) and the first section (11). 3. Slider (10; 10 ') according to claim 1 or 2, wherein the first section (11) has a substantially U-shaped section, with a core (30) and two wings (35) extending perpendicularly from the web (30), facing one another, the latch (40) comprising two fastening tabs (45) extending facing one another respectively from the longitudinal edges (41c) the fixing portion (42) of the blade (41), said fixing lugs (45) being fixed respectively to the wings of the first profile (11). A slide (10; 10 ') according to any one of claims 1 to 3, further comprising an actuating device (50; 60; 65) adapted to move the locking portion (43) of the blade (41; ) from the locked position to the unlocked position. 5. Slide (10) according to claim 4, wherein the first section (11) has an opening (52) arranged opposite the locking portion (43) of the blade (41), and wherein the device of actuation comprises a stud (50) mounted on the locking portion (43) of the blade (41) and extending through the opening (52) in the locked position of the locking portion (43). 6. Slide (10 ') according to claim 4, wherein the first (11) and second (12) profiles define between them an interior space in which is placed the lock (40), and wherein the actuating device comprises a spreader (60) having a limb (61), said limb (61) extending generally in the longitudinal direction (X) between a first end (61a) disposed outside the inner space and a second end (61b) disposed within the interior space. 7. Slide (10 ') according to claim 6, wherein the actuating device further comprises a support (65) provided with a housing open in the longitudinal direction (X) and adapted to accommodate the second end (61b). branch (61), said support (65) being attached to the bracket (45) of the latch (40). 8. Slide (10 ') according to claim 7, wherein the support (65) comprises at least one fixing wall (69) defining the housing perpendicular to the longitudinal (X) and vertical (Z) directions, said fixing wall ( 69) being arranged facing the fastening tab (45) of the latch (40), the fixing wall (69) and the fixing lug (45) comprising complementary fixing members constituted by at least one opening (74). arranged on one of the elements selected from the fixing wall (69) and the fixing lug (45), and at least one resiliently deformable latching tongue (73) adapted to be able to penetrate into the opening (74) on the other element chosen from the fixing wall (69) and the fixing lug (45). 9. Slide (10 ') according to claim 7 or 8, wherein the second end (61b) of the limb (61) of the spreader (60) comprises at least one notch (76), and wherein the support (65) comprises at least one resiliently deformable latching tongue (75) extending into the housing and adapted to penetrate the notch (76). 10. Slide (10 ') according to any one of claims 7 to 9, wherein the support (65) comprises a bottom (68) defining the housing in the vertical direction (Z) and disposed near the blade (41). ) of the latch (40), and a guide surface (70) opposite the bottom (68), the guide surface (70) being inclined towards the bottom (68) from a bearing portion (71) arranged at near the locking portion (43) of the blade (41) of the latch (40) towards a stop portion (72) arranged at a distance from the locking portion (43) of the blade (41) of the latch (40). ), the bearing portion (71) of the guide surface (70) bearing against an inner surface of the first profile (11) defining the interior space in the vertical direction (Z), so as to guide a pivoting the branch (61) relative to the first section (11) about an axis perpendicular to the longitudinal (X) and vertical (Z) directions. Vehicle seat (1) comprising a seat (2) and at least one slide (10; 10 ') according to any one of the preceding claims, the seat (2) being mounted on the slide (10; 10'). ).