Sliding device for a vehicle seat

Abstract

Sliding device (100) for a vehicle seat, characterized in that it comprises the following parts: a fixed rail (110) provided in a vehicle, wherein the fixed rail (110) has a locking section (113) on which a fixed locking mechanism (114) is formed and an unlocking section (111) on which no fixed locking mechanism (114) is formed; a movable rail (120) which is provided on the seat and moves slidably along the fixed rail (110), and A locking unit (130) provided on the movable rail (120) and moving in a vertical direction, wherein a plurality of locks (141) are formed which selectively engage with the stationary lock (114), and wherein, when at least one lock (141a) of the multiple locks (141) is positioned in the unlocking path (111), the remaining locks (141b) positioned in the locking path (113) are spaced apart from the stationary lock (114) so ​​that they have a gap (G) to the stationary lock (114), wherein the locking unit (130) is locked by the locking unit (130) being moved downwards by the elastic force of an elastic element (160) and the lock (141) engaging with the stationary lock (114) in the locking path (113) comes into play, and in which,When the locking unit (130) is moved upwards by an external force, the lock (141) is separated from the fixed lock (114) and the locking unit (130) is unlocked, wherein a first lock (141a) positioned in the direction of the unlocking path (111) is longer than other locks (141b) among several locks (141), such that while the first lock (141a) is positioned in the unlocking path (111), the remaining locks (141b) are spaced apart from the fixed lock (114) so ​​that they have a gap (G) to the fixed lock (114). and wherein the locking unit (130) does not interact with the fixed rail (110) when the seat is returned from the unlocking section (111) to the locking section (113) in order to avoid noise.

Description

[Technical field of the invention]

[0001] The present invention relates to a sliding device for a vehicle seat, and more specifically, to a sliding device for a vehicle seat that can prevent the occurrence of abnormal noises during the movement of a seat. [Technical background of the invention]

[0002] In general, a vehicle seat is designed to maintain a passenger's driving posture in an optimal state and is designed to include a seatback that supports the passenger's upper body and a seat cushion that supports the lower body, such as the buttocks and thighs.

[0003] And a vehicle seat is equipped with a seat rail so that it can be slid in the forward and backward direction of the car body for a certain distance to adapt to the body shape of the occupant.

[0004] As inFig. 1, a seat rail is typically equipped with: a fixed rail 10 installed so as to be fixed to the interior floor of a vehicle in the longitudinal direction of the vehicle body; a movable rail provided on a seat and slidably moving along the fixed rail 10; and a locking unit 20 provided on the movable rail and with which a seat is fixed at a desired position.

[0005] That is, when a seat moves forward and backward, since the locking unit 20 is separated from the fixed rail 10, the movable rail can slide along the fixed rail 10, the seat can be moved to a desired position. At the same time, the seat can be fixed in place by attaching the locking unit 20 to the fixed rail 10 after the seat has moved to a desired position.

[0006] In addition, a seat rail may be equipped with a release path into which the seat slides without locking, allowing passengers in the second or third row of the vehicle to easily enter and exit. In this case, a problem arises when the seat is returned from the release path to the locking path after passengers have entered and exited. [State of the art][Patent specification]

[0007] (Patent Document 1) Patent KR 10 2 368 352 B1 disclosed in Korea. [Content of the invention][Technical problem]

[0008] The present invention is made to solve the above problems, and its purpose is to provide a sliding device for a vehicle seat which can prevent abnormal noise from occurring when the seat is returned from the unlocking path to the locking path because the locking unit collides with the fixed rail. [Technical solution]

[0009] In order to achieve the above object, a sliding device for a vehicle seat according to the present invention is comprised of: a fixed rail provided in a vehicle and configured to consist of: a locking path on which a fixed lock is formed, and an unlocking path in which no fixed lock is formed; a movable rail provided on the seat and slidably moving along the fixed rail; and a locking unit provided on the movable rail and moving in the vertical direction, wherein a plurality of locks are formed that selectively engage with the fixed lock.

[0010] In this construction, when at least one of the plurality of locks is positioned in the unlocking path, the remaining locks positioned in the locking path are spaced apart from each other so as to have a gap with the fixed lock.

[0011] The locking unit according to the first and second embodiments of the invention may be such that, when it moves downward by the elastic force of the elastic member, it (the locking unit) is locked because the lock engages with the fixed lock in the locking path, and when the locking unit moves upward by an external force, it is unlocked by separating the lock from the fixed lock.

[0012] According to a first embodiment of the invention, the locking unit is characterized in that, since a first lock positioned toward the unlocking path is longer than other locks among a plurality of locks, while the first lock is positioned in the unlocking path, the remaining locks in the locking path are spaced apart from each other so that they have a gap with the fixed lock. Furthermore, when the seat is returned from the unlocking path to the locking path, the locking unit does not interact with the fixed rail to prevent noise.

[0013] According to a second embodiment of the invention, the fixed rail is characterized in that, since the unlocking path is formed higher than the locking path, while at least one lock is positioned in the unlocking path, the remaining locks in the locking path are arranged spaced from each other so that they have a gap to the fixed lock.

[0014] According to a third embodiment of the invention, the locking unit is such that, when it moves upward by the elastic force of the elastic member, it is locked because the lock engages with the fixed lock in the locking path, and when the locking unit moves downward by an external force, it is unlocked by separating the lock from the fixed lock.

[0015] Here, the locking unit consists in that, since a first lock positioned in the direction of the unlocking path is formed to project upwardly higher than other locks among a plurality of locks, while the first lock is positioned in the unlocking path, the remaining locks in the locking path are arranged spaced from each other so that they have a gap to the fixed lock.

[0016] According to an embodiment which, however, is not part of the invention, the fixed rail may consist in that, since the locking path is formed higher than the unlocking path, while at least one lock is positioned in the unlocking path, the remaining locks in the locking path are arranged spaced from each other so that they have a gap to the fixed lock. [Effects of the invention]

[0017] According to a sliding device for a vehicle seat according to the present invention, an effect can be achieved that abnormal noise can be prevented from occurring when a movable rail provided in the seat returns from the unlocking path to the locking path by arranging the locks of the locking unit spaced from each other so as to have a gap with the fixed lock provided in a fixed rail. [Brief description of the drawings]

[0018] They show: Fig. 1 is a view schematically showing a state in which a lock unit collides with a fixed lock in a conventional sliding device for a vehicle seat. Fig. 2 is a view schematically showing a sliding device for a vehicle seat according to an embodiment of the present invention. Fig. 3 is a view schematically showing a locking plate pulled out from a sliding device for a vehicle seat according to an embodiment of the present invention. Fig. 4 is a view schematically showing a state in which a locking unit is positioned between an unlocking path and a locking path in a sliding device for a vehicle seat according to an embodiment of the present invention. Fig. 5 is an enlarged view schematically showing a part of a fixed rail drawn out from a sliding device for a vehicle seat according to an embodiment of the present invention. Fig. 6 is a view schematically showing a state in which a locking unit is positioned between an unlocking path and a locking path in a sliding device for a vehicle seat according to an embodiment of the present invention. Fig. 7 is a view schematically showing a sliding device for a vehicle seat according to another embodiment of the present invention. Fig. 8 is a view schematically showing a locking unit in a sliding device for a vehicle seat according to another embodiment of the present invention. Fig. 9 is a view schematically showing a locking plate pulled out from a sliding device for a vehicle seat according to another embodiment of the present invention. Fig. 10 is a diagram schematically showing a state in which a locking unit is positioned between an unlocking path and a locking path in a sliding device for a vehicle seat according to another embodiment of the present invention. Fig. 11 is an enlarged view schematically showing a part of a fixed rail drawn out of a sliding device for a vehicle seat according to an embodiment of the present invention, which, however, is not part of the invention. Fig. 12 is a view schematically showing a state in which a locking unit is positioned between an unlocking path and a locking path in a sliding device for a vehicle seat according to an embodiment not forming part of the invention. [Detailed description of the invention]

[0019] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0020] Since various modifications may be made to the present invention and various embodiments may be elucidated, specific embodiments are illustrated in the drawings and specifically described in the detailed description. The present invention is not intended to be limited to specific embodiments, but should be construed to include all modifications, equivalents, or substitutes within the spirit and technical scope of the present invention.

[0021] Terms used in this patent application are intended only to describe specific embodiments, to which the present invention is not limited. Singular terms may include plural terms unless the context clearly dictates otherwise.

[0022] Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries may be interpreted to have a meaning consistent with the prior art, and unless expressly defined in the present patent application, they may not be interpreted in an ideal or overly formal sense.

[0023] Specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0024] Fig. 2 is a view schematically showing a sliding device for a vehicle seat according to an embodiment of the present invention; Fig. 3 is a view schematically showing a locking plate pulled out from a sliding device for a vehicle seat according to an embodiment of the present invention; Fig. 4 is a view schematically showing a state in which a locking unit is positioned between an unlocking path and a locking path in a sliding device for a vehicle seat according to an embodiment of the present invention; Fig. 5 is an enlarged view schematically showing a part of a fixed rail drawn out of a sliding device for a vehicle seat according to an embodiment of the present invention; and Fig. 6 is a view schematically showing a state in which a locking unit is positioned between an unlocking path and a locking path in a sliding device for a vehicle seat according to an embodiment of the present invention.

[0025] Referring to the Fig. 2 to 6, a sliding device 100 for a vehicle seat according to a preferred embodiment of the present invention includes the following parts: a fixed rail 110 provided in a vehicle and configured to consist of: a locking path 113 on which a fixed lock 114 is formed, and an unlocking path 111 in which no fixed lock 114 is formed; a movable rail 120 provided on the seat and slidably moving along the fixed rail 110; and a locking unit 130 provided on the movable rail 120 and moving in the vertical direction, in which a plurality of locks 141 are formed that selectively engage with the fixed lock 114.

[0026] Here, when at least one lock 141a of the plurality of locks 141 is positioned in the unlocking path 111, the remaining locks 141b positioned in the locking path 113 are spaced apart from each other to have a gap G with the fixed lock 114.

[0027] This can prevent abnormal noises from occurring because, in the course of moving the movable rail 120, when it moves from the unlocking path 111 to the locking path 113, the lock 141 of the locking unit 130 collides with the fixed lock 114 of the fixed rail 110.

[0028] According to the embodiment of the present invention, a locking unit 130 of the sliding device 100 for a vehicle seat may be such that, by moving downward by the elastic force of the elastic member 160, it (the locking unit) is locked because the lock 141 engages with the fixed lock 114 in the locking path 113, and that, when the locking unit 130 moves upward by an external force, it is unlocked by separating the lock 141 from the fixed lock 114.

[0029] As an example, with reference to Fig. 2, the locking unit 130 is composed of the following parts: a guide bracket 170 provided on the movable rail 120; a locking plate 140 provided so that, when inserted into the guide bracket 170, it slides vertically, and provided with a plurality of locks 141; a locking lever 150 provided so that it rotates on the movable rail 120 and supports the lower end of a support projection 142, one side end of which is arranged to project outward from the movable rail 120 and the other side end of which is provided on the locking plate 140;and an elastic member 160 that exerts an elastic force so that the locking plate 140 moves downward with one side end supported by the movable rail 120 and the other side end supporting the upper end of the support projection 142;

[0030] In this construction, the movable rail 120 is fixed in position because, when the locking unit 130 is positioned in the locking path 113, it (the locking unit) is locked by the locking plate 140 moving downward by the elastic force of the elastic member 160 and the lock 141 engaging with the fixed lock 114 provided on the fixed rail 110.

[0031] And when one side end of the lock lever 150 is pressed while the lock lever 150 is rotating and the other side end of the lock lever 150 moves the lock plate 140 upward, since by separating the lock 141 from the fixed lock 114, the lock is unlocked (released), the movable rail 120 can be moved along the fixed rail 110 in the forward and backward directions.

[0032] This locking unit 130 may consist of two embodiments, wherein, when at least one lock 141a of the plurality of locks 141 is positioned in the unlocking path 111, the remaining locks 141b positioned in the locking path 113 are spaced apart from each other so as to have a gap G to the fixed lock 114.

[0033] As a first embodiment, with reference to Fig. 3, among the plurality of locks 141 formed on the lock plate 140 of the lock unit 130, a first lock 141a positioned toward the unlocking path 111 is formed longer than the other lock 141b.

[0034] In this construction, with reference to Fig. 4, while a first lock 141a is positioned in the unlocking path 111, the remaining locks 141b are arranged spaced from each other so that they have a gap G to the fixed lock 114 in the locking path 113.

[0035] Therefore, it can be prevented from generating abnormal noises because, in the course of moving the movable rail 120, when it moves from the unlocking path 111 to the locking path 113, the lock 141 of the locking unit 130 collides with the fixed lock 114.

[0036] As a second embodiment, with reference to Fig. 5, the fixed rail 110 may be configured such that the unlocking path 111 is formed higher than the locking path 113. That is, a guide surface 112, with which the lock 141 moves in contact, is configured to be higher than the fixed lock 114 of the locking path 113, so that a gap G is defined.

[0037] In this construction, with reference to Fig. 6, while at least one lock 141 is positioned in the unlocking path 111, that is, while it is in contact with the guide surface 112, the remaining locks 141 are arranged spaced from each other so that they have a gap G to the fixed lock 114 in the locking path 113.

[0038] Therefore, it can be prevented from generating abnormal noises because, in the course of moving the movable rail 120, when it moves from the unlocking path 111 to the locking path 113, the lock 141 of the locking unit 130 collides with the fixed lock 114.

[0039] A sliding device for a vehicle seat according to another embodiment of the present invention will be described below with reference to the drawings. According to another embodiment of the present invention, the sliding device for a vehicle seat differs from the sliding device for a vehicle seat according to the first embodiment of the present invention in a structure of the locking unit.

[0040] Fig. 7 is a view schematically showing a sliding device for a vehicle seat according to another embodiment of the present invention; Fig. 8 is a view schematically showing a locking unit in a sliding device for a vehicle seat according to another embodiment of the present invention; Fig. 9 is a view schematically showing a locking plate pulled out from a sliding device for a vehicle seat according to another embodiment of the present invention; Fig. 10 is a diagram schematically showing a state in which a locking unit is positioned between an unlocking path and a locking path in a sliding device for a vehicle seat according to another embodiment of the present invention; Fig. 11 is an enlarged view schematically showing a part of a fixed rail drawn out of a sliding device for a vehicle seat according to another embodiment of the present invention; Fig. 12 is a view schematically showing a state in which a locking unit is positioned between an unlocking path and a locking path in a sliding device for a vehicle seat according to another embodiment of the present invention.

[0041] Referring to the Fig. 7 to 12, a sliding device 200 for a vehicle seat according to a preferred embodiment of the present invention includes the following parts: a fixed rail 210 provided in a vehicle and configured to consist of: a locking path 213 on which a fixed lock 214 is formed, and an unlocking path 211 in which no fixed lock 214 is formed; a movable rail 220 provided on the seat and slidably moving along the fixed rail 210; and a locking unit 230 provided on the movable rail 220 and moving in the vertical direction, in which a plurality of locks 241 are formed that selectively engage with the fixed lock 214.

[0042] Here, when at least one lock 241a of the plurality of locks 241 is positioned in the unlocking path 211, the remaining locks 241b positioned in the locking path 213 are spaced apart from each other so as to have a gap G from the fixed lock 214.

[0043] This can prevent abnormal noises from occurring because, in the course of moving the movable rail 220, when it moves from the unlocking path 211 to the locking path 213, the lock 241 of the locking unit 230 collides with the fixed lock 214 of the fixed rail 210.

[0044] According to another embodiment of the present invention, a locking unit 230 of a sliding device 200 for a vehicle seat may be such that, when it moves upward by the elastic force of the elastic member 270, it is locked because the lock 241 engages with the fixed lock 214 in the locking path 213, and when the locking unit 230 moves downward by an external force, it is unlocked by separating the lock 241 from the fixed lock 214.

[0045] As an example, with reference to Fig. 8, the locking unit 230 may be composed of the following parts: a guide part 260 provided on the movable rail 220; a locking plate 240 provided so that, by being inserted into the guide part 260, it moves slidably in the vertical direction, and on both sides of which a plurality of locks 241 are provided; a push rod 250 having one side end projecting outward from the movable rail 220 and the other side end fixed to the locking plate 240; and an elastic member 260 exerting an elastic force so that the locking plate 240 moves upward by being inserted into the guide part 260 and being disposed between the movable rail 220 and the locking plate 240.

[0046] In this construction, the movable rail 220 is fixed in position because, when the locking unit 230 is positioned in the locking path 213, it (the locking unit) is locked while the locking plate 240 moves upward by the elastic force of the elastic member 260 and the lock 241 is engaged with the fixed lock 214 provided on the fixed rail 210.

[0047] And since, when the push rod 250 is pressed while the lock plate 240 moves downward and the lock 241 separates from the fixed lock 214, the lock 241 is unlocked, the movable rail 220 can be moved along the fixed rail 210 in the forward and backward directions.

[0048] This locking unit 230 may consist of two embodiments, wherein, when at least one lock 241a of the plurality of locks 241 is positioned in the unlocking path 211, the remaining locks 241b positioned in the locking path 213 are spaced apart from each other so as to have a gap G to the fixed lock 214.

[0049] As a first embodiment, with reference to Fig. 9, among the plurality of locks 241 formed on the lock plate 240 of the lock unit 230, a first lock 241a positioned toward the unlocking path 211 is formed to project upwardly higher than the other lock 241b.

[0050] In this construction, with reference to Fig. 10, while a first lock 241a is positioned in the unlocking path 211, the remaining locks 141b are arranged spaced from each other so that they have a gap G to the fixed lock 214 in the locking path 213.

[0051] Therefore, it can be prevented that abnormal noises occur because, in the course of moving the movable rail 220, when it moves from the unlocking path 211 to the locking path 213, the lock 241 of the locking unit 230 collides with the fixed lock 214.

[0052] As a further embodiment, which is not part of the invention, with reference to Fig. 11, the fixed rail 210 may be configured such that the unlocking path 211 is formed higher than the locking path 213. That is, a guide surface 212, with which the lock 241 moves in contact, is configured to be positioned lower than the fixed lock 214 of the locking path 213, thereby defining a gap G.

[0053] In this construction, with reference to Fig. 12, while at least one lock 241 is positioned in the unlocking path 211, that is, while it is in contact with the guide surface 212, the remaining locks 241 are arranged spaced from each other so that they have a gap G to the fixed lock 214 in the locking path 213.

[0054] Therefore, it can be prevented that abnormal noises occur because, in the course of moving the movable rail 220, when it moves from the unlocking path 211 to the locking path 213, the lock 241 of the locking unit 230 collides with the fixed lock 214.

[0055] Although the present invention is described in detail by means of concrete embodiments, this is to explain the present invention in detail and the present invention is not limited thereto, and it is clear that the present invention can be modified or improved by one of ordinary skill in the art to which the present invention belongs within the technical spirit.

[0056] All simple modifications or changes of the present invention are intended to be within the scope of the present invention, and the specific scope of the present invention is pointed out by the appended claims. [List of reference symbols] 100, 200 sliding device for a vehicle seat 110, 210 fixed rail 111, 211 unlocking distance 112, 212 guide surface 113, 213 locking section 114, 214 fixed locking 120, 220 movable rail 130, 230 locking unit 140, 240 locking plate 141, 241 locking G gap

Claims

[1] Sliding device (100) for a vehicle seat, characterized by that it includes the following parts: a fixed rail (110) provided in a vehicle, the fixed rail (110) having a locking path (113) on which a fixed lock (114) is formed and an unlocking path (111) on which no fixed lock (114) is formed; a movable rail (120) provided on the seat and sliding along the fixed rail (110), and a locking unit (130) provided on the movable rail (120) and moving in the vertical direction, wherein a plurality of locks (141) are formed which are selectively engaged with the fixed lock (114), and wherein, when at least one lock (141a) of the plurality of locks (141) is positioned in the unlocking path (111), the remaining locks (141b) positioned in the locking path (113) are arranged at a distance from the fixed lock (114) so ​​as to have a gap (G) with the fixed lock (114), wherein the locking unit (130) is locked by moving the locking unit (130) downward by the elastic force of an elastic member (160) and engaging the lock (141) with the fixed lock (114) in the locking path (113) comes into engagement, and wherein,when the locking unit (130) is moved upwards by an external force, the lock (141) is separated from the fixed lock (114) and the locking unit (130) is unlocked, wherein a first lock (141a) positioned in the direction of the unlocking path (111) is formed longer than other locks (141b) among a plurality of locks (141), so that, while the first lock (141a) is positioned in the unlocking path (111), the remaining locks (141b) are arranged at a distance from the fixed lock (114) so ​​that they have a gap (G) to the fixed lock (114), and wherein the locking unit (130) does not interact with the fixed rail (110) when the seat is returned from the unlocking path (111) to the locking path (113) to avoid noise. [2] Sliding device (100) for a vehicle seat comprising: a fixed rail (110) provided in a vehicle, the fixed rail (110) having a locking path (113) on which a fixed lock (114) is formed and an unlocking path (111) on which no fixed lock (114) is formed; a movable rail (120) provided on the seat and sliding along the fixed rail (110), and a locking unit (130) provided on the movable rail (120) and moving in the vertical direction, wherein a plurality of locks (141) are formed which selectively engage with the fixed lock (114), and, wherein, when at least one of the plurality of locks (141) is positioned in the unlocking path (111), the remaining locks (141) positioned in the locking path (113) are arranged at a distance from the fixed lock (114) so ​​as to have a gap (G) to the fixed lock (114), wherein the locking unit (130) is locked by moving the locking unit (130) downwards by the elastic force of an elastic element (160) and the lock (140) engages with the fixed lock (114) in the locking path (113), and when the locking unit (130) is moved upwards by an external force, the lock (141) is separated from the fixed lock (114) and the locking unit (130) is unlocked, wherein the fixed rail (110) is designed such that that the unlocking section (111) is higher than the locking section (113) and the remaining locks (141) are arranged at a distance from the fixed lock (114) so ​​that a gap (G) to the fixed lock (114) is formed in the locking section (113), while at least one lock (141) is positioned in the unlocking section (111), and wherein the locking unit (130) does not interact with the fixed rail (110) when the seat is returned from the unlocking path (111) to the locking path (113) to avoid noise. [3] Sliding device (200) for a vehicle seat comprising: a fixed rail (210) provided in a vehicle, the fixed rail (210) having a locking path (213) on which a fixed lock (214) is formed and an unlocking path (211) on which no fixed lock (214) is formed; a movable rail (220) provided on the seat and sliding along the fixed rail (210), and a locking unit (230) provided on the movable rail (220) and moving in the vertical direction, wherein a plurality of locks (241) are formed which selectively engage with the fixed lock (214), and, wherein, when at least one lock (241a) of the plurality of locks (241) is positioned in the unlocking path (211), the remaining locks (241b) positioned in the locking path (213) are arranged at a distance from the fixed lock (214) so ​​as to have a gap (G) to the fixed lock (214), wherein the locking unit (230) is locked by moving the locking unit (230) upwards by the elastic force of an elastic element (260) and the lock (241) engages with the fixed lock (214) in the locking path (213), and wherein, when the locking unit (230) is moved downwards by an external force, the lock (241) is separated from the fixed lock (214) and the locking unit (230) is unlocked, wherein a first lock (241a) positioned in the direction of the unlocking path (211) is formed among a plurality of locks (241) of the locking unit (230) to project higher upwards than other locks (241b), so that, while the first lock (241a) is positioned in the unlocking path (211), the remaining locks (241b) are arranged at a distance from the locking path (213), so that a gap (G) to the fixed lock (214) is formed in the locking path (213), and wherein the locking unit (230) does not interact with the fixed rail (210) when the seat is returned from the unlocking path (211) to the locking path (213) to avoid noise.

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