continuously adjustable slide locking system

Abstract

This relates to a locking system for a continuously adjustable vehicle seat slide, comprising a fixed rail (3), and two blocking members (4, 5) constrained towards each other by an elastic member (6) to ensure their buttressing on the rail (3), as well as an unlocking mechanism comprising an unlocking member ensuring the release of the sliding of the slide by a separation of the two blocking members. Abstract figure: Figure 7c

Description

Title of the invention: Continuously adjustable slide locking system

[0001] The present disclosure relates to a locking system for a continuously adjustable vehicle seat slide, as well as to a vehicle seat comprising such a locking system. Technical field

[0002] The present disclosure relates to the field of systems for adjusting and locking a slide for a motor vehicle. It relates more particularly to adjustment systems whose slides connect a seat base to the floor of the vehicle.

[0003] In the present disclosure, and in a known manner, a vehicle seat may typically comprise: - a seat, which extends in a direction X, from a front edge to a rear edge, and extends transversely in a direction Y, from a first lateral edge to a second lateral edge, - a backrest which extends in height from the rear edge of the seat, in a Z direction, vertical, or typically inclined backwards, from a lower edge to an upper edge of the backrest, and extends transversely in a Y direction, from a first lateral edge, to a second lateral edge.

[0004] The backrest can be tilted relative to the seat, typically by a pivot axis between the backrest frame and the seat frame, extending in the transverse direction Y.

[0005] The position of the seat in the vehicle can typically be adjusted, along the X direction, by means of an adjustment and locking system according to the present disclosure, or preferably two adjustment and locking systems, with two slides connecting the seat to the floor of the vehicle in parallel.

[0006] Thus, the or each of the two slides comprises two slide elements with a first slide element secured to the floor, typically a lower profile, and a second slide element secured to the seat base, typically an upper profile, the two slide elements being configured to slide relative to each other in the X direction.

[0007] The adjustment and locking system further comprises a locking system, including a control member which is biased, typically manually or motorized, to unlock the slide to allow the occupant of the seat to adjust the position of the seat by moving the first, movable slide element relative to said second slide element.

[0008] Once the seat position has been adjusted, the control member is released to ensure that the seat is locked in adjustment positions corresponding to adjustment steps of the slide.

[0009] For this purpose, the state of the art knows the locking systems with discontinuous adjustment which have a locking system comprising a support, integral with the second slide element, and locking members, movable relative to the support, configured to penetrate adjustment openings integral with the first slide element in a locking state of the locking system, under the action of elastic means such as springs. The control member, when actuated, makes it possible to constrain the locking members against the force of the springs and thus to extract the locking members from the adjustment openings, releasing the sliding of the slide.

[0010] A first family of locking system is thus known, usually designated by those skilled in the art by the English term “step lock” for which the locking members, typically integral with one another, only ensure the locking of the slide if the relative position between the two slide elements, first slide element, and second slide element corresponds to an adjustment step of the slide

[0011] A second family of locking system is also known, with improved security compared to the first family, usually referred to by those skilled in the art as "instant lock" which always ensures blocking of the two elements of the slide, even if the position between the two slide elements, first slide element and second slide element, is in any intermediate position between two consecutive adjustment positions.

[0012] For this purpose, the locking members are independent of each other, configured so that at least one of the members penetrates and locks into one of the adjustment openings, typically oblong, and even if the slide is in this intermediate position, between two adjustment steps, namely two consecutive adjustment positions of the slide.

[0013] The slide can then only slide over a stroke corresponding to the adjustment step of the slide. A slight sliding of the first slide element relative to the second slide element allows the other non-penetrating locking members to come into contact with and lock into the adjustment openings when the slide is moved into one (or the other) of the two consecutive adjustment positions, in order to obtain locking of the slide. In both cases, whether it is a locking system of the “step lock” type (in French “locking on step”) or “instant lock” type, the number of adjustment positions is limited to the number of locking positions permitted by the system’s adjustment step.

[0014] The present disclosure, however, concerns the continuously adjustable locking slide system, namely ensuring an unlimited number of adjustment positions along the length of the slide, and as opposed to the previously described adjustment and locking system, with discontinuous adjustment. Prior art

[0015] It is thus known from the state of the art, in particular from document DE449476A1, a system for locking a slide configured to ensure continuous adjustment, namely that the locking device makes it possible to lock the slide in any position of the upper profile relative to the lower profile, over the useful travel of movement of the slide.

[0016] The locking system of document DE449476A1 finds a particular application for a seat whose slides are motorized.

[0017] The slide comprises an upper profile mounted to slide along a lower profile. The lower profile of the slide comprises a vertical fold extending projecting into the interspace between the two profiles, the fold extending along a median vertical plane, this fold forming two substantially vertical friction surfaces.

[0018] Two pairs of friction members are provided in the slide, on either side of the vertical fold, including: - a first pair of friction members, extending between one of the friction surfaces of the vertical fold and an opposite wall of the upper profile, a first elastomer wedge then forcing the two members of the pair to move apart to ensure bracing, - a second pair of friction members extending between the other of the friction surfaces of the vertical fold and another opposite wall of the upper profile, a second elastomeric wedge then forcing the two members of the pair to move apart to ensure bracing. Unlocking is obtained by a mechanism comprising a fork, for each pair of friction members, and which makes it possible to eliminate the buttressing of the pair by simultaneously bringing the two locking members of each pair together.

[0020] According to the inventors' findings, such a continuously adjustable locking mechanism has a large number of parts, and a structure that is expensive to industrialize. Such a locking and adjustment system can be improved. Summary

[0021] The present disclosure improves the situation.

[0022] There is provided a system for locking a continuously adjustable slide for a vehicle seat, the system comprising; - the slide comprising a first, lower slide element, configured to be fixed to a floor of the vehicle, and a second, upper slide element, configured to slide along the first slide element - a locking system by arching comprising: — a rail, extending lengthwise along the slide, fixed relative to the first slide element, said rail having a first, upper friction surface and a second, lower, opposite friction surface — a first locking member and a second locking member, mounted integral with the second slide element, in offset positions along a longitudinal axis of the rail, the first locking member comprising a first wall and a second wall, facing each other, configured to rub respectively on the first surface and the second friction surface of the rail, the second locking member comprising a third wall and a fourth wall, facing each other, configured to rub respectively on the first surface and the second friction surface of the rail, — an elastic member mounted between the first locking member and the second locking member generating a return force configured to force the first locking member and the second locking member towards each other, with generation of a first force between the first locking member and a first support,integral with the second slide element and generation of a second force between the second blocking member and a second support, integral with the second slide element, and in which said first force generated by the first support on the first blocking member ensures a bracing of said first blocking member on the rail ensuring a locking of the second slide element relative to the first slide element in a first direction, by two reactions of said rail on said first blocking member, with on the one hand, a first reaction between the first upper friction surface of the rail and the first wall of said first blocking member and, on the other hand, a second reaction between the second lower friction surface of the rail and the second wall of said first blocking member, , and in which said second force generated by the second pressure on the second locking member ensures a bracing of said second locking member on the rail ensuring a locking of the second slide element relative to the first slide element in a second direction, by two reactions of said rail on said second locking member, with on the one hand, a third reaction between the first upper friction surface of the rail and the third wall of said second locking member and, on the other hand, a fourth reaction between the second lower friction surface of the rail and the fourth wall of said second locking member, - an unlocking mechanism comprising a movable unlocking member, configured to move from a first position allowing the first locking member and the second locking member to be braced on the rail under the action of said elastic member to a second position where said unlocking member separates the first locking member and the second locking member against the return force of the elastic member, with release of the sliding of the second slide element relative to the first slide element.

[0023] The features set forth in the following paragraphs may, optionally, be implemented. They may be implemented independently of one another or in combination with one another:

[0024] According to one embodiment, the first slide element is a lower profile and the second slide element is an upper profile, mounted to slide along the lower profile, the first locking member and the second locking member extending internally in the interspace between the upper profile and the lower profile.

[0025] According to one embodiment, the first locking member and the second locking member protrude from the upper profile, through two upper openings of the upper profile.

[0026] According to one embodiment, the rail is a separate part from the lower profile, received in said interspace between the upper profile and the lower profile. A first bracket can connect a first longitudinal end of the rail with the lower profile and a second bracket can connect a second end of the rail with the lower profile.

[0027] According to one embodiment, the first locking member and the second locking member respectively comprise a first guide wall and a second guide wall, facing each other, inclined relative to each other while converging downwards, said first and second guide walls configured respectively to engage with said unlocking member during its deployment to ensure a separation of the first locking member and the second locking member against the restoring force of the elastic member, with suppression of the first force and the second force, in the second position of said unlocking member.

[0028] According to one embodiment, and when the first support and / or second support are elements distinct from the second slide element, in particular, from the upper profile, the system may comprise a mechanism for adjusting the position of the first support and / or the second support, on the second slide element, along the longitudinal axis of the slide.

[0029] Alternatively, the first support for the first locking member and the second support for the second locking member are supports physically and directly constituted by the second slide element, in particular by the upper profile PSUP. For example, the first support for the first locking member is constituted by an edge of the upper opening crossed by the first locking member and the second support for the second locking member is constituted by an edge of the upper opening crossed by the second locking member.

[0030] According to one embodiment, said elastic member is a shaped spring blade, stressed in extension, having a first longitudinal end coming to bear on a bearing surface of the first locking member and a second longitudinal end coming to bear on a bearing surface of the second locking member, and a section of intermediate length extending for the most part along the longitudinal axis of the slide and joining the two ends consisting of the first longitudinal end and the second longitudinal end, the first longitudinal end and the second longitudinal end being oriented towards each other.

[0031] According to one embodiment, the slide extends lengthwise in a direction X, and transversely in a direction Y, and heightwise in a direction Z, from bottom to top from the first slide element to the second slide element, and in which the first locking member and the second locking member extend substantially in the direction Z and in which: - the areas of exertion of the forces generated by the elastic member on the first locking member and on the second locking member are arranged, in the Z direction, below the first upper surface of the rail, - the areas of exertion of the forces generated by the unlocking member on the first locking member and on the second locking member are arranged, in the Z direction, below the first upper surface of the rail, - the first support generating the first force and the second support generating the second force ensuring the buttressing of the first locking member and the second locking member, are arranged, in the Z direction, above the first upper surface of the rail.

[0032] According to a second aspect, the present disclosure relates to a motor vehicle seat comprising a seat and a backrest as well as a continuously adjustable locking system according to the present disclosure, the first slide element of which is anchored to a floor of the vehicle and the second slide element of which is secured to a frame of the seat. Brief description of the drawings

[0033] Other characteristics, details and advantages will appear on reading the detailed description below, and on analyzing the attached drawings, in which: Fig.l

[0034] [Fig.l] shows a perspective view of a continuously adjustable slide locking system. Fig. 2

[0035] [Fig.2] is a detail view of [Fig.l], illustrating the locking system, including the first locking member configured to engage with a first support secured to the upper profile of the slide, and a second locking member configured to engage with a second support secured to the upper profile of the slide, the first support being formed by a first transverse axis secured to a first support, of adjustable position on the upper profile along a first oblong hole in the upper profile, the second support being formed by a second transverse axis secured to a second support of adjustable position on the upper profile, along a second oblong hole in the upper profile. Fig. 3

[0036] [Fig.3] is a view of [Fig.2] when the first support and the second support are removed, the first locking member and the second locking member protruding from two openings in the upper profile. Fig. 4a

[0037] [Fig.4a] is a view of the system when the upper profile and the lower profile of the slide are hidden, leaving visible the rail, internal with fixing brackets, as well as the mechanism comprising the first locking member and the second locking member constrained towards each other by the elastic member in the form of an extension spring, an unlocking member being inserted between the two locking members and separating them in order to unlock the slide in a second position of said unlocking member. Fig. 4b

[0038] [Fig.4b] is a back view of [Fig.4a] Fig. 5

[0039] [Fig.5] is a partial view of [Fig.4b] when a guide-function support for the unlocking organ is hidden Fig. 6

[0040] [Fig.6] is a sectional view along a plane, parallel to the XY plane passing the rail internal between the upper and lower profiles of the slide. Fig. 7

[0041] [Fig.7a] is a schematic view illustrating the principle and conditions of locking by bracing the locking system, with bracing of the first locking member on the rail to ensure the locking of the slide in a first sliding direction, and bracing of the second locking member on the rail to ensure the locking of the slide in a second sliding direction. Fig. 7b

[0042] [Fig.7b] is a view according to [Fig.7a] illustrating the points of application of the forces generated by the elastic member on the first locking member and on the second locking member, the elastic member causing the generation of a first force between the first locking member and the first support, integral with the second slide element and the generation of a second force between the second locking member and a second support, integral with the second slide element, at the origin of the buttressing of the two locking members. Fig. 7c

[0043] [Fig.7c] is a schematic view illustrating the points of application of the unlocking member on two guide walls of the two locking members, the guide walls being inclined relative to each other to cause the two locking members to move apart, and thus the suppression of the buttressing and the release of the sliding of the slide. Description of the embodiments

[0044] The drawings and the description below contain, for the most part, elements of a certain character. They may therefore not only serve to better understand the present disclosure, but also contribute to its definition, where appropriate.

[0045] Also the present disclosure relates to a system 1 for locking a continuously adjustable slide for a vehicle seat, comprising; - the slide 2 comprising a first slide element 20, lower, configured to be fixed to a floor of the vehicle, and a second slide element 21, upper, configured to slide along the first slide element - a locking system by bracing.

[0046] The buttress locking system allows the slide to be locked continuously in an unlimited number of locking positions over the useful travel of the slide, and as opposed to a discontinuous adjustment system comprising a limited number of locking positions

[0047] The buttress locking system is self-sufficient in the sense that it does not complement a locking system of the discontinuous adjustment type, and comprising notches ensuring such discontinuous adjustment.

[0048] In the figures, the orthogonal reference XYZ is oriented so that the X axis is oriented along the sliding axis of the slide, the Y direction along the horizontal direction, and transverse to the slide, perpendicular to X, and the Z axis along the vertical.

[0049] The first slide element 20 may be constituted by a lower profile PINF, having a section with a base 200 extending substantially along a plane parallel to the XY plane, extended by two rising wings 201, 202. The second slide element 21 may be constituted by an upper profile PSUP, having a section, with a main wing 210 extending substantially along a plane parallel to the XY plane, extended by two descending wings 211, 212. The terminal portions of the rising wings 201, 202 and the terminal portions of the descending wings 211, 212 are intertwined and form rolling tracks for rolling members such as balls or the like.

[0050] [Fig.l] illustrates a slide with an asymmetrical profile, namely that the vertical dimension of the two descending (resp. ascending) wings are unequal. In general, the present disclosure is applicable whether the profiles are asymmetrical as illustrated or symmetrical (not illustrated).

[0051] According to the present disclosure, the buttress locking system comprises a rail 3, as well as a first locking member 4 and a second locking member 5 configured to buttress onto the rail under the action of an elastic member 6.

[0052] The rail 3 extends along the slide and is fixed relative to the first slide element 20, said rail having a first friction surface 30, upper and a second friction surface, lower 31, opposite.

[0053] The first locking member 4 and the second locking member 5 are mounted integral with the second slide element 21, namely movable with it, in positions offset along a longitudinal axis of the rail 3. The first locking member 4 and the second locking member 5 extend respectively in length along a vertical direction, along the Z direction, or slightly inclined relative to this direction by a few degrees, with an inclination of less than 25°, for example less than 10°

[0054] The first locking member 4 comprises a first wall 40 and a second wall 41, facing each other, configured to rub respectively on the first surface 30 and the second friction surface 31 of the rail. The first wall 40 and the second wall 41 may be formed by two opposite side walls of a groove in the first locking member, and as illustrated in the figures.

[0055] The second locking member 5 comprises a third wall 50 and a fourth wall 51, facing each other, configured to rub respectively on the first surface 30 and the second friction surface 31 of the rail 3. The third wall 50 and the fourth wall 51 may be formed by two opposite side walls of a groove in the second locking member 4, and as illustrated in the figures.

[0056] The elastic member 6 is mounted between the first locking member 4 and the second locking member 5. The elastic member 6 generates a restoring force configured to constrain the first blocking member 4 and the second blocking member 5 towards each other, with generation: - a first force F1 between the first locking member 4 and a first support API, integral with the second slide element 21, said first force F1 being generated by the first support on the first locking member 4, - a second force F2 between the second locking member 5 and a second support AP2, integral with the second slide element 21, said second force F2 being generated by the second support on the first locking member 4,

[0057] As illustrated in [Fig.7a], said first force F1 generated by the first API support on the first locking member 4 ensures a bracing of said first locking member 4 on the rail 3 ensuring a locking of the second slide element relative to the first slide element, in a first direction S1 (sliding of the slide).

[0058] This locking in the SI direction is obtained by bracing with two reactions of said rail on said first blocking member, with on the one hand, a first reaction Rai between the first upper friction surface 30 of the rail and the first wall 40 of said first friction member 4 and, on the other hand, a second reaction RBi between the second lower friction surface 31 of the rail and the second wall 41 of said first friction member 4.

[0059] In particular, and as visible in [Fig.l], the point of application of the first force F1 generated by the first support API on the first blocking member 4 is located above the point of convergence CPI of the directions of the first and second reactions Rai, RBi along the direction Z, i.e. above the dotted line L1, which guarantees the bracing of the first blocking member 4 on the rail 3.

[0060] As illustrated in [Fig.7a], the second force F2 generated by the second support AP2 on the second locking member 5 ensures a bracing of said second locking member 5 on the rail 3 ensuring a locking of the second slide element 21 relative to the first slide element 20 in a second direction S2 (of sliding of the slide).

[0061] This locking in the direction S2 is obtained by bracing with two reactions of said rail on said second blocking member 5, with on the one hand, a third reaction RA2 between the first upper friction surface 30 of the rail and the third wall 50 of said second friction member 5 and, on the other hand, a fourth reaction RB2 between the second lower friction surface 31 of the rail and the fourth wall 51 of said second friction member 5.

[0062] In particular, and as visible in [Fig.7a], the point of application of the second force F2 generated by the second support AP2 on the second locking member is are located above the point of convergence CP2 of the directions of the third and fourth reactions RA 2, Rb 2 along the Z direction, i.e. above the dotted line L1 which guarantees the bracing of the second blocking member 5 on the rail 3.

[0063] It is also noted that the first support API generating the first force F1 and the second support AP2 generating the second force F2 ensuring the buttressing of the first locking member 4 and the second locking member 5, are arranged, in the direction Z, above the first upper surface 30 of the rail. The supports (first support API and second support AP2) can be located, in the direction Z, close to said main wing 210 of the upper profile PSUP.

[0064] It is also noted in [Fig.7a] that the zones of exercise of the two FSpring forces generated by the elastic member 6 on the first locking member 4 and on the second locking member 5 are arranged, in the direction Z, preferably below the first upper surface 30 of the rail.

[0065] Said elastic member 6 may be a shaped spring blade, stressed in extension, having: - a first longitudinal end 60 bearing on a bearing surface of the first locking member 4 and, - a second longitudinal end 61 bearing on a bearing surface of the second locking member 5, and, - a section of intermediate length extending mainly along the longitudinal axis of the slide and joining the two ends consisting of the first longitudinal end 60 and the second longitudinal end 61.

[0066] The first longitudinal end 60 and the second longitudinal end 61 are oriented towards each other, and as illustrated in [Fig.7b].

[0067] The continuously adjustable locking system also comprises an unlocking mechanism comprising a movable unlocking member 7, configured to move from a first position P1 allowing the buttressing of the first locking member 4 and the buttressing of the second locking member 5 on the rail 3 under the action of said elastic member 6 to a second position P2 separating the first locking member 4 and the second locking member 5 against the return force of the elastic member 6.

[0068] The second position P2 of said unlocking member ensures the separation of the first locking member 4 and the second locking member 5 until the first force F1 and the second force F2 are eliminated, and thus the sliding of the second slide element 21 is released relative to the first slide element 20.

[0069] In [Fig.7c], it can be seen that the zones of exertion of the Funlocking forces generated by the unlocking member 7 on the first locking member 4 and the second locking member 5 are arranged, in the direction Z, below the first upper surface 30 of the rail, and preferably below a dotted line L2.

[0070] For this purpose, the first locking member 4 and the second locking member 5 may respectively comprise a first guide wall 42 and a second guide wall 52, facing each other, inclined relative to each other while being convergent from the second slide element 21 towards the first slide element 20, namely along the vertical downward direction Z.

[0071] This first guide wall 42 and this second guide wall 52 are configured respectively to engage with said unlocking member 7 during its deployment to ensure a separation of the first blocking member 4 and the second blocking member 5 against the return force of the elastic member 6, with suppression of the first force F1 and the second force F2, in the second position P2 of said unlocking member 7.

[0072] In Figures 4a and 4b, the unlocking member 7 is a finger slidably mounted on a support 70 which is in the high position in the unlocking position P1 and low in the locking position P2. From the high position to the low position, the finger is inserted between the first guide wall 42 and the second guide wall 52, engaging with the guide walls 42, 52 (first and second). Conversely, from the low position to the high position, the finger is extracted so as to leave free the work of the elastic member 6

[0073] The passage of the unlocking member from the first position PI to the second position P2 (and vice versa) can be mechanized, obtained by an actuator, or even be manually controlled.

[0074] According to one embodiment, the first locking member 4 and the second locking member 5 protrude from the upper profile, respectively through two upper openings 01, 02 of the upper profile PSUP.

[0075] Furthermore, the rail 3 may be a separate part from the lower profile 20, received in said interspace between the upper profile PSUP and the lower profile PINF. The rail 3 is fixed to the lower profile PINF by brackets. A first bracket 8 connects a first longitudinal end of the rail with the lower profile and a second bracket 9 connects a second end of the rail with the lower profile PINF.

[0076] It is also noted that the slide locking system may comprise a mechanism for adjusting the position of the first support API and / or the second support AP2, on the second slide element, in particular the upper profile PSUP, along the longitudinal axis of the slide 2. In such a case, this requires providing the first API support and / or the second AP2 support as elements distinct from the second slide element 21, in particular distinct from the upper profile PSUP.

[0077] In [Fig.6], it can be seen that the first support API is in the form of a transverse axis, oriented in the Y direction, which is integral with a support 10 which is of adjustable position on the upper profile PSUP. It can be seen that the second support AP2 is in the form of a transverse axis, oriented in the Y direction, which is integral with a support 11 which is of adjustable position on the upper profile PSUP.

[0078] The adjustment is carried out, for example, by tightening a fixing member (for example a screw / nut system) through an oblong hole on the support 10 or 11, or on the upper profile PSUP.

[0079] Generally, the first support API and / AP2 may be constituted by elements distinct from the second slide element 21, in particular from the upper profile, and even when they are not in an adjustment position along the second slide element 21. The first support API may be integral with a support 10 (first) and the second support AP2 may be integral with a support 11 (second). The attachment of the supports 10 and 11 to the second slide element 21, in particular to the upper profile PSUP, may be achieved by any means such as a screw-nut system, rivets, or even by welding.

[0080] Alternatively, the first support API for the first locking member 4 and the second support AP2 for the second locking member 5 are supports physically and directly constituted by the upper profile PSUP.

[0081] For example, the first support API for the first blocking member 4 may be constituted by an edge of the upper opening 01 crossed by the first blocking member 4 and the second support AP2 for the second blocking member is constituted by an edge of the upper opening 02 crossed by the second blocking member 5.

[0082] The rail 3 may be parallelepipedal, of rectangular section, the first friction surface 30 and the second friction surface 31 consisting of two opposite faces of the parallelepiped. The rail 3 is however not limited to this shape and may for example be cylindrical in shape, of circular section.

[0083] The present disclosure also relates to a motor vehicle seat comprising a seat and a backrest as well as one (or even two) continuously adjustable locking systems according to the present disclosure, the first slide element 20 of which is anchored to a floor of the vehicle and the second slide element 21 of which is secured to a frame of the seat.

[0084] Usually, the seat can have two systems 1 for locking a slide arranged in parallel. List of reference signs

[0085] - 1: Locking system for a vehicle slide with continuous adjustment, - 2. Slide - 20. First slide element, - 200. Base, - 201, 202. Rising wings - PINF. Lower profile, - 21. Second slide element, - 210. Main wing, - 211,212. Descending wings - PSUP. Upper profile - 3. Rail, - 30. First friction surface, - 31. Second friction surface, - 4. First blocking organ, - 40,41. Respectively first wall and second wall (configured to buttress the rail), - 5. Second blocking organ, - 50.51. Respectively third wall and fourth wall (configured to buttress the rail), - 6. Elastic organ (in particular spring), - API. First support (attached to the second slide element and constituting a support for the first locking member 4), - Fl. First force between the first blocking member 4 and the first API support, generated by the elastic member, - AP2. Second support (attached to the second slide element and constituting a support for the second locking member), - F2. Second force between the second locking member 5 and the second API support, generated by the elastic member, - SI, S2. Respectively first direction and second direction for the movement of the second slide element, movable relative to the first slide element, - 7. Unlocking member, - 70. Guide support for locking member 7, - 42, 52. First guide wall and second guide wall (belonging respectively to the first locking member and to the second locking member, -8,9. Brackets (rail fixing), - 10,11. Support (first support and second support), - PI. First position (lock), - P2. Second position (unlock), -01. Opening (of the upper profile for the first locking member), - 02. Opening (of the lower profile for the second locking member), - RAi, Rb i- First and second reactions (bracing of the first blocking organ 4), - Cpi Point of concurrency between the directions of the first and second reaction, - RA2, RB2- First and second reactions (bracing of the first blocking member 4), - CP2 Point of concurrency between the directions of the third and fourth reactions.

Claims

1. Claims System (1) for locking a continuously adjustable slide for a vehicle seat, comprising; - the slide (2) comprising a first slide element (20), lower, configured to be fixed to a floor of the vehicle, and a second slide element (21), upper, configured to slide along the first slide element - an arch locking system comprising: — a rail (3), extending lengthwise along the slide, fixed relative to the first slide element, said rail having a first upper friction surface (30) and a second lower friction surface (31), opposite — a first locking member (4) and a second locking member (5), mounted integrally with the second slide element (21), with positions offset along a longitudinal axis of the rail (3), the first locking member (4) comprising a first wall (40) and a second wall (41), facing each other, configured to rub respectively on the first surface (30) and the second friction surface (31) of the rail, the second locking member (5) comprising a third wall (50) and a fourth wall (51), facing each other, configured to rub respectively on the first surface (30) and the second friction surface (31) of the rail (3), — an elastic member (6) mounted between the first locking member (4) and the second locking member (5) generating a return force configured to force the first locking member (4) and the second locking member (5) towards each other,with generation of a first force (Fl) between the first locking member (4) and a first support (API), integral with the second slide element (21) and of a second force (F2) between the second locking member (5) and a second support (AP2), integral with the second slide element (21), and in which said first force (Fl) generated by the first support (API) on the first locking member (4) ensures a bracing of said first locking member (4) on the rail (3) ensuring a locking of the second slide element relative to the first slide element in a first sliding direction (SI), by two reactions of said rail on said first locking member, with

2. on the one hand, a first reaction (RAi) between the first upper friction surface (30) of the rail and the first wall (40) of said first friction member (4) and, on the other hand, a second reaction (RBi) between the second lower friction surface (31) of the rail and the second wall (41) of said first friction member (4), and in which said second force (F2) generated by the second support (AP2) on the second locking member (5) ensures a bracing of said second locking member (5) on the rail (3) ensuring a locking of the second slide element (21) relative to the first slide element (20) in a second sliding direction (S2), by two reactions of said rail on said second locking member, with on the one hand, a third reaction (Rai) between the first upper friction surface (30) of the rail and the third wall (50) of said second friction member and, on the other hand, a fourth reaction (RB2) between the second lower friction surface (31) of the rail and the fourth wall (51) of said second friction member (5), - an unlocking mechanism comprising a movable unlocking member (7), configured to move from a first position (PI) allowing the first locking member (4) and the second locking member (5) to be buttressed on the rail under the action of said elastic member (6) to a second position (P2) where said unlocking member separates the first locking member (4) and the second locking member (5) against the return force of the elastic member (6), with release of the sliding of the second slide element (21) relative to the first slide element (20), and in which the first slide element (20) is a lower profile (PINF) and the second slide element is an upper profile (PSUP), slidably mounted along the lower profile,the first locking member (4) and the second locking member (5) extending internally in the interspace between the upper profile (PSUP) and the lower profile (PINF)., System (1) for locking a continuously adjustable slide according to claim 1, in which the first locking member (4) and the second locking member (5) protrude from the upper profile at through two upper openings (01, 02) of the upper profile (PSUP).

3. System (1) for locking a continuously adjustable slide according to one of claims 1 or 2 in which the rail (3) is a separate part from the lower profile (PINF), received in said interspace between the upper profile (PSUP) and the lower profile (PINF).

4. A continuously adjustable slide locking system according to claim 3, wherein a first bracket (8) connects a first longitudinal end of the rail (3) with the lower profile (PINF) and a second bracket (9) connects a second end of the rail (3) with the lower profile (PINF).

5. A continuously adjustable slide locking system according to one of claims 1 to 4, wherein the first locking member (4) and the second locking member (5) respectively comprise a first guide wall (42) and a second guide wall (52), facing each other, inclined relative to each other while being convergent from the second slide element (21) towards the first slide element (20), configured respectively to engage with said unlocking member (7) during its deployment to ensure a separation of the first locking member (4) and the second locking member (5) against the restoring force of the elastic member (6), with removal of the first force (F1) and the second force (F2), in the second position (P2) of said unlocking member (7).

6. A slide locking system according to one of claims 1 to 5, comprising in which the first support (API) and / or the second support (AP2) are constituted by elements distinct from said second slide element, a mechanism for adjusting the position of the first support (API) and / or the second support (AP2), on the second slide element, along the longitudinal axis of the slide (2).

7. Locking system according to one of claims 1 to 5, in which the first support (API) for the first locking member (4) and the second support (AP2) for the second locking member (5) are supports physically and directly constituted by the upper profile (PSUP).

8. A slide locking system according to claim 2 and 7 in which the first support (API) for the first member of blocking (4) is constituted by an edge of the upper opening (01) crossed by the first blocking member (4) and the second support (AP2) for the second blocking member is constituted by an edge of the upper opening (02) crossed by the second blocking member (5).

9. A slide locking system according to one of claims 1 to 8, wherein said elastic member (6) is a shaped spring blade constrained in extension, having a first longitudinal end (60) bearing on a bearing surface of the first locking member (4), a second longitudinal end (61) bearing on a bearing surface of the second locking member (5), and a section of intermediate length extending for the most part along the longitudinal axis of the slide and joining the two ends consisting of the first longitudinal end (60) and the second longitudinal end (61), the first longitudinal end (60) and the second longitudinal end (61) being oriented towards each other.

10. A slide locking system according to one of claims 1 to 9, in which the slide extends lengthwise in a direction X, transversely in a direction Y, and in height in a direction Z from bottom to top, and in which the first locking member and the second locking member extend substantially in the direction Z: - the force exertion zones (FSpring).generated by the elastic member (6) on the first locking member (4) and the second locking member (5) are arranged, in the Z direction, below the first upper surface (30) of the rail, - the areas of exertion of the forces (Funlocking) generated by the unlocking member on the first locking member (4) and the second locking member (5) are arranged, in the Z direction, below the first upper surface (30) of the rail, - the first support (API) generating the first force (Fl) and the second support (AP2) generating the second force (F2) ensuring the buttressing of the first locking member (4) and the second locking member (5), are arranged, in the Z direction, above the first upper surface (30) of the rail. 20

11. Motor vehicle seat comprising a seat and a backrest as well as a continuously adjustable locking system (1) according to one of claims 1 to 10, the first slide element (20) of which is anchored to a floor of the vehicle and the second slide element (21) is integral with a frame of the seat.

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