Moving device of seat rail for vehicle

Abstract

The present invention provides a moving device for a vehicle seat rail comprising: a spur gear movable along a rack gear and having at least one locking member; a pinion pin having one end inserted into the inner diameter of the spur gear to support the locking member; and a clutch drum that cuts off power transmission to the spur gear.

Description

Technology Field

[0001] The present invention relates to a moving device for a vehicle seat rail. Background Technology

[0002] Generally, a seat may be installed in a vehicle. The vehicle seat may include a seat back that supports the passenger's upper body, a seat cushion that supports the passenger's lower body, and a headrest that supports the head.

[0003] The seat rails applied to the second or third row seats of SUVs (Sport Utility Vehicles) or MPVs (Multi Purpose Vehicles) are long rails, which are longer than the seat rails of regular passenger cars.

[0004] Vehicle seats can be classified into power seats or manual seats. Power seats allow the seat to be moved to a desired position by the drive of a motor simply by operating a switch. Manual seats allow the seat to be moved by manual operation.

[0005] Conventional vehicle seat rails may include a lower rail fixed to a floor panel and an upper rail coupled to the lower rail, capable of moving back and forth along an upper rail and connected to a vehicle seat. In the case of a power seat (electric seat) in which the movement of the upper rail is driven by a motor, a plurality of gears (pinion gears, rack gears, etc.) for moving the upper rail may be installed inside the lower rail.

[0006] However, conventional power-driven vehicle seat rails lacked a separate control device, making it difficult to move or stop the vehicle seat quickly. Prior art literature

[0007] Republic of Korea Published Patent Application No. 10-2023-0161765 (Published Nov. 28, 2023) The problem to be solved

[0008] In order to solve the aforementioned problem, the present invention aims to provide a moving device for a vehicle seat rail that enables power from a power source to be transmitted to a spur gear through a pinion pin by causing a jamming state of the first and second locking members provided in the inner diameter portion of the spur gear by the disengagement operation of the clutch drum.

[0009] In addition, the present invention aims to provide a moving device for a vehicle seat rail that can block the transmission of power from a power source to a spur gear through a pinion pin by causing the first and second locking members provided in the inner diameter portion of the spur gear to be released from jamming by the engagement operation of the clutch drum. means of solving the problem

[0010] To achieve the aforementioned purpose, the present invention provides a moving device for a vehicle seat rail comprising: a spur gear movable along a rack gear and having at least one locking member; a pinion pin having one end inserted into the inner diameter of the spur gear to support the locking member; and a clutch drum that cuts off power transmission to the spur gear.

[0011] Additionally, the locking member comprises a pair of first locking members and second locking members, wherein the first locking member and the second locking member are supported by one end of a pinion pin, and the clutch drum is coupled to one end of the pinion pin so as to face the spur gear, and at least one coupling projection provided on one surface and elastically supported by an elastic member is inserted between the first locking member and the second locking member to block power transmission to the spur gear.

[0012] In addition, the above-mentioned coupling projection is composed of a pair and has a key in the inner diameter portion, and the key can be inserted into a key groove provided at one end of the pinion pin and slide.

[0013] Additionally, the first locking member may include a first elastic body located on one side of the inner diameter portion of the spur gear; a first roller elastically supported by the first elastic body at one end of the first elastic body; and a second roller elastically supported by the first elastic body at the other end of the first elastic body.

[0014] Additionally, the second locking member may include a second elastic body located on the other side of the inner diameter portion of the spur gear; a third roller elastically supported by the second elastic body at one end of the second elastic body; and a fourth roller elastically supported by the second elastic body at the other end of the second elastic body.

[0015] Additionally, a first support surface, a second support surface, a third support surface, and a fourth support surface are provided around one end of the pinion pin, and the first support surface supports the first roller, the second support surface supports the second roller, the third support surface supports the third roller, and the fourth support surface supports the fourth roller.

[0016] Additionally, the width between the inner diameter portion of the spur gear and the first and second support surfaces is configured to widen as it goes from one end of the first and second support surfaces facing the insertion portion of the coupling projection to the other end of the first and second support surfaces facing the first elastic body, and the width between the inner diameter portion of the spur gear and the third and fourth support surfaces can be configured to widen as it goes from one end of the third and fourth support surfaces facing the insertion portion of the coupling projection to the other end of the third and fourth support surfaces facing the second elastic body.

[0017] Additionally, when the first and second rollers are positioned at one end of the first and second support surfaces, the first and second rollers may be in a jammed state, and when the first and second rollers are positioned at the other end of the first and second support surfaces, the first and second rollers may be released from jamming.

[0018] Additionally, when the third and fourth rollers are positioned at one end of the third and fourth support surfaces, the third and fourth rollers may be in a jammed state, and when the third and fourth rollers are positioned at the other end of the third and fourth support surfaces, the third and fourth rollers may be released from jamming.

[0019] Additionally, when the clutch drum is pushed in the direction of the spur gear by the pressurizing device and the coupling projection is inserted between the first and third rollers and between the second and fourth rollers, the first and second rollers are pushed by the coupling projection and move from one end of the first and second support surfaces to the other end, and the third and fourth rollers are pushed by the coupling projection and move from one end of the third and fourth support surfaces to the other end.

[0020] Additionally, when the clutch drum is pushed in the opposite direction of the spur gear by the elastic force of the elastic member and the coupling projection is disengaged between the first and third rollers and between the second and fourth rollers, the first and second rollers are pushed by the first elastic body and move from the other end of the first and second support surfaces to the one end, and the third and fourth rollers are pushed by the second elastic body and move from the other end of the third and fourth support surfaces to the one end.

[0021] Additionally, it may further include a support member coupled to one end of the pinion pin so as to be offset toward the spur gear between the clutch drum and the spur gear, and having at least one support projection on one surface.

[0022] In addition, the support projection is composed of a pair, and the elastic member can elastically support the clutch drum and the support member between the clutch drum and the support member.

[0023] Additionally, the clutch drum, the elastic member, the support member, and the spur gear are assembled inside the housing through an opening provided on one side of the housing, and a cover is coupled to the opening of the housing, and one side of the first and second locking members is supported by the support projection of the support member, and the other side is supported by the cover. Effects of the invention

[0024] The present invention can implement various driving methods by controlling the power transmission and interruption between the rack gear and the spur gear.

[0025] In addition, the present invention can provide satisfaction to passengers by diversifying seat sliding method options.

[0026] In addition, the present invention can apply a walk-in function within a long rail system. Brief explanation of the drawing

[0027] FIG. 1 is a drawing showing a moving device for a vehicle seat rail according to a preferred embodiment of the present invention mounted on a seat rail. FIG. 2 is a perspective view of a moving device for a vehicle seat rail according to a preferred embodiment of the present invention. FIG. 3 is an exploded perspective view of a moving device for a vehicle seat rail according to a preferred embodiment of the present invention. FIG. 4 is a perspective view showing the state in which the cover is separated from the housing according to a preferred embodiment of the present invention. FIG. 5 is a side view of a moving device for a vehicle seat rail according to a preferred embodiment of the present invention. FIG. 6 is a diagram showing the coupling operation of a clutch drum according to a preferred embodiment of the present invention. FIG. 7 is a diagram showing the disengagement operation of a clutch drum according to a preferred embodiment of the present invention. FIG. 8 is a front view showing the state in which the coupling projection of a clutch drum according to a preferred embodiment of the present invention is inserted into the inner diameter portion of a spur gear. Specific details for implementing the invention

[0028] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the present invention, such detailed description is omitted. Additionally, while preferred embodiments of the present invention will be described below, the technical concept of the present invention is not limited or restricted thereto and can be modified and implemented in various ways by those skilled in the art.

[0029] FIG. 1 is a drawing showing a moving device for a vehicle seat rail according to a preferred embodiment of the present invention mounted on a seat rail, FIG. 2 is a perspective view of a moving device for a vehicle seat rail according to a preferred embodiment of the present invention, FIG. 3 is an exploded perspective view of a moving device for a vehicle seat rail according to a preferred embodiment of the present invention, and FIG. 4 is a perspective view showing a state in which a cover is separated from a housing according to a preferred embodiment of the present invention.

[0030] As illustrated in FIGS. 1 to 4, the apparatus may include a spur gear (10) that meshes with a rack gear (20), a pinion pin (30) whose one end is inserted into the inner diameter of the spur gear (10), a clutch drum (40) coupled to one end of the pinion pin (30), a support member (50) coupled to one end of the pinion pin (30) and positioned between the spur gear (10) and the clutch drum (40), and an elastic member (60) that elastically supports the clutch drum (40) and the support member (50) between the clutch drum (40) and the support member (50).

[0031] The clutch drum (40), elastic member (60), support member (50), and spur gear (10) can be coupled to one end of a pinion pin (30) located inside the housing (H) through one side opening (H1) of the housing (H).

[0032] A cover (C) can be attached to one side opening (H1) of the housing (H) while the clutch drum (40), elastic member (60), support member (50), and spur gear (10) are combined inside the housing (H).

[0033] The housing (H) is mounted on the upper rail (UR) that moves along the lower rail (LR), and the rack gear (20) can be inserted and coupled to the lower rail (LR). The lower rail (LR) can be fixed to the floor panel. The upper rail (UR) can be connected to a seat (not shown).

[0034] The spur gear (10) can move along the rack gear (20) while meshing with the rack gear (20). A pair of first locking members (11) and second locking members (12) may be provided in the inner diameter portion of the spur gear (10). The first locking member (11) and the second locking member (12) may be configured to face each other.

[0035] FIG. 5 is a side view of a moving device for a vehicle seat rail according to a preferred embodiment of the present invention, FIG. 6 is a drawing showing the engagement operation of a clutch drum according to a preferred embodiment of the present invention, and FIG. 7 is a drawing showing the disengagement operation of a clutch drum according to a preferred embodiment of the present invention.

[0036] As illustrated in FIGS. 5 to 7, the pinion pin (30) can be connected to a power source (M), such as a motor. The power from the power source (M) can be transmitted to the spur gear (10) through the pinion pin (30).

[0037] One end of the pinion pin (30) can be inserted into the inner diameter portion of the spur gear (10). One end of the pinion pin (30) can support the first locking member (11) and the second locking member (12). The first locking member (11) and the second locking member (12) can be located between one end of the pinion pin (30) and the inner diameter portion of the spur gear (10).

[0038] The clutch drum (40) can be coupled to one end of the pinion pin (30). The clutch drum (40) can slide along the pinion pin (30). The clutch drum (40) can be configured to be spaced apart from the spur gear (10).

[0039] The clutch drum (40) may be provided with a coupling projection (41). The coupling projection (41) may be configured in an arc shape. The coupling projection (41) may be configured as a pair on one side of the clutch drum (40). The pair of coupling projections (41) may be configured to face each other. The coupling projection (41) may be configured to face the inner diameter portion of the spur gear (10). The coupling projection (41) may be inserted between one end of the pinion pin (30) and the inner diameter portion of the spur gear (10).

[0040] A key (411) may be provided in the inner diameter portion of the coupling projection (41). The key (411) of the coupling projection (41) can be inserted into a key groove (35) provided at one end of the pinion pin (30) and slide. Since the key (411) slides while coupled to the key groove (35), stable movement of the clutch drum (40) can be achieved.

[0041] The clutch drum (40) can be pushed in the direction of the spur gear (10) by the pressure of a pressurizing device (A), such as an actuator.

[0042] The support member (50) can be coupled to one end of the pinion pin (30). The support member (50) can be positioned between the clutch drum (40) and the spur gear (10). The support member (50) can be coupled so as to be offset toward the spur gear (10). The support member (50) can be in close contact with the spur gear (10).

[0043] The support member (50) may be provided with a pair of support protrusions (51). The support protrusions (51) may be configured in an arc shape. For example, if a pair of coupling protrusions (41) of the clutch drum (40) are formed vertically, it is preferable to form a pair of support protrusions (51) of the support member (50) horizontally so that interference does not occur.

[0044] A support projection (51) may be provided on one side of a support member (50). The support projection (51) may be inserted into the inner diameter of a spur gear (10). The support projections (51) may be configured to face each other.

[0045] The elastic member (60) may be a spring. The elastic member (60) may be coupled to one end of the pinion pin (30). The elastic member (60) may elastically support the support member (50) and the clutch drum (40) between the support member (50) and the clutch drum (40). The elastic member (60) may be compressed by being pushed by the clutch drum (40).

[0046] A first support surface (31), a second support surface (32), a third support surface (33), and a fourth support surface (34) may be provided at one end of the pinion pin (30). A keyway (35) of the pinion pin (30) may be provided between the first support surface (31) and the third support surface (33), and between the second support surface (32) and the fourth support surface (34).

[0047] The first support surface (31), the second support surface (32), the third support surface (33), and the fourth support surface (34) may be composed of inclined surfaces.

[0048] FIG. 8 is a front view showing the state in which the coupling projection of a clutch drum according to a preferred embodiment of the present invention is inserted into the inner diameter portion of a spur gear.

[0049] As shown in FIG. 8, the first locking member (11) and the second locking member (12) can be configured in the same shape.

[0050] The first locking member (11) may be located on one side of the inner diameter portion of the spur gear (10).

[0051] The first locking member (11) may include a first elastic body (111), a first roller (112), and a second roller (113).

[0052] The first elastic body (111) can be located on one side of the inner diameter portion of the spur gear (10).

[0053] The first roller (112) can be elastically supported by the first elastic body (111) at one end of the first elastic body (111).

[0054] The second roller (113) can be elastically supported by the first elastic body (111) at the other end of the first elastic body (111).

[0055] The first roller (112) can be supported by the first support surface (31) of the pinion pin (30).

[0056] The second roller (113) can be supported by the second support surface (32) of the pinion pin (30).

[0057] The width (W) between the inner diameter portion of the spur gear (10) where the first roller (112) is located and the first support surface (31) can be configured to become wider as it goes from one end of the first support surface (31) facing the insertion portion (13) of the coupling projection (41) to the other end of the first support surface (31) facing the first elastic body (111).

[0058] The width (W1) between the inner diameter of the spur gear (10) and one end of the first support surface (31) is configured to be less than or equal to the outer diameter of the first roller (112), so that when the first roller (112) is positioned at one end of the first support surface (31), the first roller (112) can be in a jammed state.

[0059] The width (W2) between the inner diameter of the spur gear (10) and the other end of the first support surface (31) is configured to be larger than the outer diameter of the first roller (112), so that when the first roller (112) is positioned at the other end of the first support surface (31), the jamming release state of the first roller (112) can be achieved.

[0060] The width (W) between the inner diameter portion of the spur gear (10) where the second roller (113) is located and the second support surface (32) can be configured to become wider as it goes from one end of the second support surface (32) facing the insertion portion (13) of the coupling projection (41) to the other end of the second support surface (32) facing the first elastic body (111).

[0061] The width (W1) between the inner diameter of the spur gear (10) and one end of the second support surface (32) is configured to be less than or equal to the outer diameter of the second roller (113), so that when the second roller (113) is positioned at one end of the second support surface (32), the second roller (113) can be in a jammed state.

[0062] The width (W2) between the inner diameter of the spur gear (10) and the other end of the second support surface (32) is configured to be larger than the outer diameter of the second roller (113), so that when the second roller (113) is positioned at the other end of the second support surface (32), the jamming release state of the second roller (113) can be achieved.

[0063] One side of the first elastic body (111) and the first and second rollers (112, 113) can be supported by a support projection (51) of the support member (50). The other side of the first elastic body (111) and the first and second rollers (112, 113) can be supported by a cover (C) that is coupled to one side opening (H1) of the housing (H).

[0064] The second locking member (12) may be located on the other side of the inner diameter portion of the spur gear (10).

[0065] The second locking member (12) may include a second elastic body (121), a third roller (122), and a fourth roller (123).

[0066] The second elastic body (121) can be located on the other side of the inner diameter portion of the spur gear (10).

[0067] The third roller (122) can be elastically supported by the second elastic body (121) at one end of the second elastic body (121).

[0068] The fourth roller (123) can be elastically supported by the second elastic body (121) at the other end of the second elastic body (121).

[0069] The third roller (122) can be supported by the third support surface (33) of the pinion pin (30).

[0070] The fourth roller (123) can be supported by the fourth support surface (34) of the pinion pin (30).

[0071] The width (W) between the inner diameter portion of the spur gear (10) where the third roller (122) is located and the third support surface (33) can be configured to become wider as it goes from one end of the third support surface (33) facing the insertion portion (13) of the coupling projection (41) to the other end of the third support surface (33) facing the second elastic body (121).

[0072] The width (W1) between the inner diameter portion of the spur gear (10) and one end portion of the third support surface (33) is configured to be less than or equal to the outer diameter of the third roller (122), so that when the third roller (122) is positioned at one end portion of the third support surface (33), the third roller (122) can be in a jammed state.

[0073] The width (W2) between the inner diameter of the spur gear (10) and the other end of the third support surface (33) is configured to be larger than the outer diameter of the third roller (122), so that when the third roller (122) is positioned at the other end of the third support surface (31), the jamming release state of the third roller (122) can be achieved.

[0074] The width (W) between the inner diameter portion of the spur gear (10) where the fourth roller (123) is located and the fourth support surface (34) can be configured to become wider as it goes from one end of the fourth support surface (34) facing the insertion portion (13) of the coupling projection (41) to the other end of the fourth support surface (34) facing the second elastic body (121).

[0075] The width (W1) between the inner diameter of the spur gear (10) and one end of the fourth support surface (34) is configured to be less than or equal to the outer diameter of the fourth roller (123), so that when the fourth roller (123) is positioned at one end of the fourth support surface (34), the fourth roller (123) can be in a jammed state.

[0076] The width (W2) between the inner diameter of the spur gear (10) and the other end of the fourth support surface (34) is configured to be larger than the outer diameter of the fourth roller (123), so that when the fourth roller (123) is positioned at the other end of the fourth support surface (34), the jamming release state of the fourth roller (123) can be achieved.

[0077] One side of the second elastic body (121) and the third and fourth rollers (122, 123) can be supported by a support projection (51) of a support member (50). The other side of the second elastic body (121) and the third and fourth rollers (122, 123) can be supported by a cover (C) that is coupled to one side opening (H1) of the housing (H).

[0078] For example, a key may be formed on the outer diameter of the first and second elastic bodies (111, 121), and a key groove may be formed on one end of the pinion pin (30) into which the key of the first and second elastic bodies (111, 121) is inserted.

[0079] The following describes the coupling operation of the clutch drum of the present invention.

[0080] As shown in FIGS. 5, 6, and 8, when the pressing force of the pressing device (A) acts on the clutch drum (40), the clutch drum (40) can move in the direction of the spur gear (10) while pressing the elastic member (60).

[0081] As the clutch drum (40) moves in the coupling direction, the coupling projection (41) of the clutch drum (40) can be inserted into the insertion portion (13) of the coupling projection (41) formed in the inner diameter portion of the spur gear (10).

[0082] The insertion portion (13) of the coupling projection (41) can be formed by the assembly of one end of the pinion pin (30) and the first and second locking members (11, 12) in the inner diameter portion of the spur gear (10).

[0083] A pair of coupling protrusions (41) of the clutch drum (40) can be inserted between the first and third rollers (112, 122) and between the second and fourth rollers (113, 123).

[0084] As the first roller (112) is pushed by the coupling projection (41) and moves from one end of the first support surface (31) to the other end, the jamming release state of the first roller (112) can be achieved.

[0085] As the second roller (113) is pushed by the coupling projection (41) and moves from one end of the second support surface (32) to the other end, the jamming release state of the second roller (113) can be achieved.

[0086] As the third roller (122) is pushed by the connecting projection (41) and moves from one end of the third support surface (33) to the other end, the jamming release state of the third roller (122) can be achieved.

[0087] As the fourth roller (123) is pushed by the coupling projection (41) and moves from one end of the fourth support surface (34) to the other end, the jamming release state of the fourth roller (123) can be achieved.

[0088] When power from a power source (M), such as a motor, is transmitted to the pinion pin (30) in a free-moving state of the first to fourth rollers (112, 113, 122, 123), one end of the pinion pin (30) coupled to the inner diameter of the spur gear (10) rotates freely, so power transmission to the spur gear (10) can be blocked.

[0089] Since power transmission to the spur gear (10) is blocked, the spur gear (10) cannot move along the rack gear (20).

[0090] The following describes the disengagement operation of the clutch drum of the present invention.

[0091] FIG. 7 is a diagram showing the disengagement operation of a clutch drum according to a preferred embodiment of the present invention.

[0092] As shown in FIGS. 5, 7, and 8, when the pressurizing force of the pressurizing device (A) is not applied to the clutch drum (40), the elastic member (60), which was compressed by being pushed by the clutch drum (40), extends back to its original state and can push the clutch drum (40) in the opposite direction of the spur gear (10).

[0093] As the clutch drum (40) is pushed in the opposite direction of the spur gear (10), the coupling projection (41) of the clutch drum (40) can be completely disengaged from the insertion portion (13) of the inner diameter portion of the spur gear (10).

[0094] When the coupling projection (41) of the clutch drum (40) is disengaged from the inner diameter portion of the spur gear (10), the first and second elastic bodies (111, 121) that were compressed by being pushed by the coupling projection (41) can be restored to their original state.

[0095] The first roller (112) can be pushed by the first elastic body (111) which is restored to its original state, and as it moves from the other end of the first support surface (31) toward the one end, the first roller (112) may be in a jammed state.

[0096] As the second roller (113) is pushed by the first elastic body (111) which is restored to its original state, moving from the other end of the second support surface (32) toward the one end, the jamming state of the second roller (113) can be achieved.

[0097] The third roller (122) can be pushed by the second elastic body (121) which is restored to its original state, and as it moves from the other end of the third support surface (33) toward the one end, the jamming state of the second roller (122) can be achieved.

[0098] As the fourth roller (123) is pushed by the second elastic body (121) which is restored to its original state, moving from the other end of the fourth support surface (34) toward the one end, the jamming state of the fourth roller (123) can be achieved.

[0099] When power from the power source (M) is transmitted to the pinion pin (30) while the first to fourth rollers (112, 113, 122, 123) are jammed, the pinion pin (30) can rotate.

[0100] As the pinion pin (30) rotates, the rotational force of the pinion pin (30) is transmitted to the spur gear (10), allowing the spur gear (10) to move along the rack gear (20).

[0101] In the jammed state of the first to fourth rollers (112, 113, 122, 123), the rotational force of the pinion pin (30) can be transmitted to the spur gear (10) through the first and second locking members (11, 12).

[0102] As described above, the present invention enables the power of a power source to be transmitted to the spur gear through the pinion pin by causing the first and second locking members provided in the inner diameter portion of the spur gear to be engaged by the engagement operation of the clutch drum. Additionally, the present invention enables the power of a power source to be transmitted to the spur gear through the pinion pin by causing the first and second locking members provided in the inner diameter portion of the spur gear to be engaged by the engagement operation of the clutch drum.

[0103] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications, changes, and substitutions within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments and accompanying drawings. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0104] 10: Spur gear 11: First locking member 111: First elastic body 112: 1st roller 113: 2nd roller 12: 2nd locking member 121: Second elastic body 122: Third roller 123: Fourth roller 13: Insertion point 20: Rack gear 30: Pinion pin 31: First support surface 32: Second support surface 33: Third support surface 34: 4th support surface 35: Keyway 40: Clutch drum 41 : Connecting projection 411 : Key 50 : Support member 51 : Support projection 60 : Elastic member A : Pressure device M : Power source H : Housing H1 : Opening C: Cover UR: Upper Rail LR: Lower Rail W : Width W1 : Width W2 : Width

Claims

Claim 1 A moving device for a vehicle seat rail, comprising: a spur gear movable along a rack gear and having at least one locking member; a pinion pin having one end inserted into the inner diameter of the spur gear to support the locking member; and a clutch drum that blocks power transmission to the spur gear; wherein the locking member comprises a pair of first locking members and second locking members, and the first locking member and the second locking member are supported by one end of the pinion pin; and the clutch drum is coupled to one end of the pinion pin so as to face the spur gear, and is elastically supported by an elastic member, and at least one coupling projection provided on one surface is inserted between the first locking member and the second locking member to block power transmission to the spur gear. Claim 2 delete Claim 3 A moving device for a vehicle seat rail according to claim 1, wherein the coupling projection is composed of a pair and has a key in the inner diameter portion, and the key is inserted into a key groove provided at one end of the pinion pin and is capable of sliding movement. Claim 4 A moving device for a vehicle seat rail according to claim 1, wherein the first locking member comprises: a first elastic body located on one side of the inner diameter portion of the spur gear; a first roller elastically supported by the first elastic body at one end of the first elastic body; and a second roller elastically supported by the first elastic body at the other end of the first elastic body. Claim 5 In claim 4, the second locking member comprises: a second elastic body located on the other side of the inner diameter portion of the spur gear; a third roller elastically supported by the second elastic body at one end of the second elastic body; and a fourth roller elastically supported by the second elastic body at the other end of the second elastic body; a moving device for a vehicle seat rail. Claim 6 A moving device for a vehicle seat rail according to claim 5, wherein a first support surface, a second support surface, a third support surface, and a fourth support surface are provided around one end of the pinion pin, and the first support surface supports the first roller, the second support surface supports the second roller, the third support surface supports the third roller, and the fourth support surface supports the fourth roller. Claim 7 A moving device for a vehicle seat rail according to claim 6, wherein the width between the inner diameter portion of the spur gear and the first and second support surfaces is configured to widen as it goes from one end of the first and second support surfaces facing the insertion portion of the coupling projection to the other end of the first and second support surfaces facing the first elastic body, and the width between the inner diameter portion of the spur gear and the third and fourth support surfaces is configured to widen as it goes from one end of the third and fourth support surfaces facing the insertion portion of the coupling projection to the other end of the third and fourth support surfaces facing the second elastic body. Claim 8 A moving device for a vehicle seat rail according to claim 7, characterized in that when the first and second rollers are positioned at one end of the first and second support surfaces, the first and second rollers are in a jammed state, and when the first and second rollers are positioned at the other end of the first and second support surfaces, the first and second rollers are in a jammed-out state. Claim 9 A moving device for a vehicle seat rail according to claim 7, characterized in that when the third and fourth rollers are positioned at one end of the third and fourth support surfaces, a jammed state of the third and fourth rollers is formed, and when the third and fourth rollers are positioned at the other end of the third and fourth support surfaces, a jammed release state of the third and fourth rollers is formed. Claim 10 A moving device for a vehicle seat rail according to claim 7, wherein when the clutch drum is pushed in the direction of the spur gear by a pressurizing device and the coupling projection is inserted between the first and third rollers and between the second and fourth rollers, the first and second rollers are pushed by the coupling projection and move from one end of the first and second support surfaces to the other end, and the third and fourth rollers are pushed by the coupling projection and move from one end of the third and fourth support surfaces to the other end. Claim 11 A moving device for a vehicle seat rail according to claim 7, wherein when the clutch drum is pushed in the opposite direction of the spur gear by the elastic force of the elastic member and the coupling projection is disengaged between the first and third rollers and between the second and fourth rollers, the first and second rollers are pushed by the first elastic body and move from the other end of the first and second support surfaces to the one end, and the third and fourth rollers are pushed by the second elastic body and move from the other end of the third and fourth support surfaces to the one end. Claim 12 A moving device for a vehicle seat rail according to claim 1, further comprising a support member coupled to one end of the pinion pin so as to be offset toward the spur gear between the clutch drum and the spur gear, and having at least one support projection on one surface. Claim 13 A moving device for a vehicle seat rail according to claim 12, wherein the support projection is composed of a pair, and the elastic member elastically supports the clutch drum and the support member between the clutch drum and the support member. Claim 14 A moving device for a vehicle seat rail according to claim 13, wherein, in a state where the clutch drum, the elastic member, the support member, and the spur gear are assembled inside the housing through an opening provided on one side of the housing, a cover is coupled to the opening of the housing, and the first and second locking members are characterized in that one side is supported by a support projection of the support member and the other side is supported by the cover.

Images