Seat rail locking device

Abstract

The present invention provides a seat guide rail locking device, comprising: a hinge shaft rotatably supported on an upper guide rail; a pressure member connected to the lower part of the hinge shaft inside the upper guide rail and rotatable together with the hinge shaft; and a locking plate elastically supported by a first elastic member, which moves in the locking direction by pressure from the pressure member, while a locking protrusion on one side is inserted into a locking hole in the lower guide rail.

Description

Technical Field

[0001] This invention relates to a seat rail locking device installed inside a vehicle. Background Technology

[0002] Seat rails are typically installed inside a vehicle. A seat rail consists of a lower rail and an upper rail. The lower rail is mounted on the vehicle's floor panel. The upper rail connects to the seat and slides along the lower rail while being inserted into it.

[0003] The upper and lower guide rails can be formed by roll forming. Mass production of the upper and lower guide rails through roll forming can significantly reduce manufacturing costs. However, when the upper and lower guide rails are manufactured by roll forming, due to repeated bending, locking holes may not be properly formed on the sidewall of the lower guide rail.

[0004] The lower guide rail installed on the vehicle's interior floor and the upper guide rail inserted into and sliding along the lower guide rail can be locked by a locking device.

[0005] However, because existing seat rail locking devices lack other devices capable of accurate locking, they cannot lock smoothly during the locking operation due to play.

[0006] Prior technical documents

[0007] Patent documents

[0008] (Patent document 1) Republic of Korea Patent Publication No. 10-2024-0044881 (published on April 5, 2024) Summary of the Invention

[0009] In order to solve the above problems, the purpose of the present invention is to provide a seat rail locking device that can smoothly and seamlessly lock the upper and lower guide rails during locking operation.

[0010] To achieve the above objectives, the present invention provides a seat rail locking device, comprising: a hinge shaft rotatably supported on an upper guide rail; a pressure member connected to the lower part of the hinge shaft inside the upper guide rail and rotatable together with the hinge shaft; and a locking plate elastically supported by a first elastic member, which moves in the locking direction by pressure from the pressure member, while a locking protrusion on one side is inserted into a locking hole in the lower guide rail.

[0011] Furthermore, when the pressurizing member rotates in the locking direction, the pressurizing force of the pressurizing member acts on the locking plate. While the locking plate is pushed in the locking direction, the locking protrusion can be inserted into the locking hole provided on the side wall of the lower guide rail.

[0012] Furthermore, when the pressurizing member rotates in the unlocking direction, the pressurizing force acting on the locking plate disappears. Through the elastic restoring force of the first elastic member, the locking plate is pushed in the unlocking direction, and the locking protrusion can disengage from the locking hole provided on the side wall of the lower guide rail.

[0013] Furthermore, the pressure member is configured such that its length is greater than its width, and while rotating in the locking direction, it can apply pressure to the locking plates on one end and the other end, which have length directions on both sides, in the locking direction.

[0014] Furthermore, the locking plate is placed on the main body of the guide member, and the upper guide rail has a first assembly space at the bottom and a second assembly space on both sides of the first assembly space along the length direction of the first assembly space. The first assembly space can be configured to have a wider width than the second assembly space.

[0015] Furthermore, the guide member may also include a support member connected to the main body within the first assembly space and positioned opposite each other on both sides of the main body along its length.

[0016] Furthermore, the locking plates can be disposed inside the first assembly space on both sides of the upper surface of the main body, and assembled such that the locking protrusions protrude more than the two sides of the main body.

[0017] Furthermore, one end portion and the other end portion of the locking plate along its length can be inserted into a guide groove provided in the support member.

[0018] Furthermore, the guide member also includes: a locking protrusion, at least one pair of which are provided in the body; and an insertion space formed between the upper surface of the body and the locking protrusion; the locking plate, when inserted into the insertion space on the other side, is guided by the locking protrusion and can move in the locking direction.

[0019] Furthermore, the hinge shaft has an expansion portion in its lower outer diameter section, and the locking plate is locked in the expansion portion to restrict its upward movement. The bottom surface of the expansion portion has a connecting hole. With the connecting hole engaging with a connecting protrusion on one side of the pressure member, the connecting member is threaded onto the hinge shaft through the connecting protrusion and the connecting hole on the other side of the pressure member.

[0020] Furthermore, at least a portion of the side surface of the connecting protrusion may be formed by a plane, and at least a portion of the connecting hole may be formed by a plane corresponding to the plane of the connecting protrusion.

[0021] Furthermore, the head of the connecting member can be inserted into a receiving hole formed in the center of the body and can be rotatably assembled.

[0022] Furthermore, the locking plate may include: a through hole disposed on both sides in the length direction for inserting the first elastic member; and a receiving groove disposed on the other side for inserting the pressurizing member.

[0023] Furthermore, when the receiving grooves of the two locking plates on the upper sides of the main body are arranged opposite each other, a receiving space that conforms to the width of the pressure member can be formed.

[0024] Furthermore, the main body and the support member are connected by a connecting part and locking shafts provided on both sides of the connecting part. The first elastic member can be assembled such that one end is inserted into the through hole, while the hook provided on the other end is locked to the locking shaft.

[0025] Furthermore, the upper part of the hinge shaft is rotatably supported by at least one support frame connected to the upper guide rail. A lever, elastically supported by a second elastic member, is connected to the upper part of the hinge shaft exposed above the upper guide rail. The lever is connected to the pulling member. When the pulling member is pulled, it rotates in the locking direction and transmits rotational force to the hinge shaft. When the pulling force of the pulling member disappears, it can return to its original position through the elastic restoring force of the second elastic member.

[0026] Furthermore, the guide hole provided on the side wall of the first assembly space interval is configured to correspond to the locking hole provided on the side wall of the lower guide rail, so that during the locking operation of the locking plate, the locking protrusion can be inserted through the guide hole and the locking hole.

[0027] Furthermore, the sidewall of the first assembly space interval can protrude towards the sidewall of the lower guide rail.

[0028] Furthermore, the main body and the supporting member can be connected by a third elastic member.

[0029] Furthermore, the two ends of the third elastic member can be connected to assembly holes provided on the mutually facing surfaces of the main body and the support member.

[0030] Invention Effects

[0031] In this invention, since the locking plate slides in the locking direction under the guidance of the guide member while the locking plate is placed on the guide member, perfect locking operation control can be achieved. Attached Figure Description

[0032] Figure 1 This is a perspective view of a seat rail locking device according to a preferred embodiment of the present invention.

[0033] Figure 2 This is an exploded perspective view of the hinge shaft, pressure member, connecting member and guide member according to a preferred embodiment of the present invention.

[0034] Figure 3 This is a diagram showing the head of the connecting member according to a preferred embodiment of the present invention inserted into the receiving hole.

[0035] Figure 4 This is an exploded perspective view of the hinge shaft, locking plate, and guide member according to a preferred embodiment of the present invention.

[0036] Figure 5 This is a perspective view showing the state in which the locking protrusion is inserted into the locking hole according to a preferred embodiment of the present invention.

[0037] Figure 6 yes Figure 5 AA-line cross-section diagram.

[0038] Figure 7 This is an enlarged view of a lever according to a preferred embodiment of the present invention.

[0039] Figure 8 This is a perspective view showing the state before locking according to a preferred embodiment of the present invention.

[0040] Figure 9 This is a top view of the locking plate in its pre-locking state according to a preferred embodiment of the present invention.

[0041] Figure 10 yes Figure 8 BB line cross-section diagram.

[0042] Figure 11 This is a top view showing the operation of the locking plate during locking according to a preferred embodiment of the present invention.

[0043] 10: Upper guide rail; 11: First assembly space; 111: Side wall; 111a: Guide hole; 12: Second assembly space; 121: Side wall; 20: Lower guide rail; 21: Side wall; 211: Locking hole; 30: Hinge shaft; 31: Expansion part; 311: Connecting hole; 311a: Plane; 40: Pressurizing member; 41: Connecting protrusion; 411: Plane; 50: Locking plate; 51: Locking protrusion; 52: Through hole; 53: Receiving groove; 60: Guide member; 61 611: Main body; 62: Assembly hole; 63: Supporting member; 64: Guide groove; 65: Assembly hole; 66: Receiving hole; 67: Insertion space; 78: Connecting part; 79: Locking shaft; 80: Locking protrusion; 71: Head; 81: First elastic member; 82: Hook; 83: Second elastic member; 90: Pulling member; F: Support frame; L: Lever; SP: Receiving space; W1: Horizontal width; W2: Horizontal width Detailed Implementation

[0044] The preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. First, when labeling the constituent elements of each drawing with reference numerals, care should be taken to assign the same numerals to the same constituent elements even if they are shown in different drawings. Furthermore, in describing the present invention, detailed descriptions of related well-known structures or functions may obscure the essence of the invention, so such detailed descriptions are omitted. Although a preferred embodiment of the present invention is described below, the technical concept of the present invention is not limited thereto, and various modifications can be made by those skilled in the art.

[0045] Figure 1 This is a perspective view of a seat rail locking device according to a preferred embodiment of the present invention. Figure 2 This is an exploded perspective view of the hinge shaft, pressure member, connecting member and guide member according to a preferred embodiment of the present invention.

[0046] like Figure 1 , Figure 2 As shown, it may include: a hinge shaft 30, which rotates in the locking direction as the lever L rotates; a pressure member 40, which is attached to the lower part of the hinge shaft 30 inside the upper guide rail 10; a locking plate 50, which is pushed in the locking direction by the pressure member 40; a guide member 60, which places the locking plate 50 on the left and right sides of the upper guide rail in a mutually facing manner; a first elastic member 81, a second elastic member 82, and a third elastic member 83.

[0047] The lower part of the hinge axis 30 can pass through the upper guide rail 10 and be located inside the upper guide rail 10. The upper part of the hinge axis 30 can be rotatably supported by the upper guide rail 10.

[0048] The hinge shaft 30 may include an expansion portion 31. The expansion portion 31 may be provided on the lower outer diameter portion of the hinge shaft 30. The expansion portion 31 may be located on the upper part of the locking plates 50 provided on the left and right sides of the guide member 60.

[0049] The locking plate 50 can be locked in the expansion section 31 to limit its upward movement. This allows for a stable locking operation of the locking plate 50.

[0050] A connecting hole 311 may be provided on the bottom surface of the expansion portion 31. A connecting protrusion 41 may be connected to the connecting hole 311. The connecting protrusion 41 may be formed by protruding from the upper surface of the pressure member 40.

[0051] At least a portion of the outer diameter of the protrusion 41 can be formed by a plane 411.

[0052] At least a portion of the connecting hole 311 corresponding to the plane 411 of the connecting protrusion 41 may be formed by the plane 311a.

[0053] As described above, since planes 311a and 411 are formed in the connecting hole 311 and the connecting protrusion 41, the rotational force of the hinge shaft 30 can act on the pressure member 40, so that the pressure member 40 can rotate together with the hinge shaft 30.

[0054] The connecting member 70 can be engaged with the connecting protrusion 41 in the connecting hole 311. The connecting member 70 can be threaded onto the hinge shaft 30 through the center of the connecting protrusion 41 and the connecting hole 311 on the bottom surface of the pressure member 40. The connecting member 70 can be a bolt.

[0055] Since the pressure member 40 is firmly connected to the hinge shaft 30 through the connecting member 70, the rotational force of the hinge shaft 30 is transmitted to the pressure member 40, and the pressure member 40 can rotate together with the hinge shaft 30.

[0056] The pressure member 40 can be configured such that its length is longer than its width. The pressure member 40 can be located between the two locking plates 50.

[0057] While the pressure member 40 rotates in the locking direction, one end and the other end in the length direction can pressurize the locking plates 50 placed on both sides of the main body 61 of the guide member 60 in the locking direction.

[0058] The guide member 60 may include a main body 61, support members 62 disposed on both sides of the main body 61 in the length direction, a locking protrusion 67 disposed on the upper surface of the main body 61, and an insertion space 64 formed between the locking protrusion 67 and the upper surface of the main body 61.

[0059] Figure 3This is a diagram showing the head of the connecting member according to a preferred embodiment of the present invention inserted into the receiving hole.

[0060] like Figure 3 As shown, a receiving hole 63 may be provided in the center of the main body 61. The head 71 of the connecting member 70 can be inserted into the receiving hole 63 provided in the center of the main body 61. When the pressure member 40 rotates, the head 71 of the connecting member 70 can rotate freely in the state of being inserted into the receiving hole 63.

[0061] Figure 4 This is an exploded perspective view of the hinge shaft, locking plate, and guide member according to a preferred embodiment of the present invention. Figure 5 This is a perspective view showing the locking protrusion inserted into the locking hole according to a preferred embodiment of the present invention. Figure 6 yes Figure 5 AA-line cross-section diagram.

[0062] like Figures 4 to 6 As shown, the locking plate 50 can be locked by pressure from the pressure member 40 while being positioned on the upper surface of the main body 61 of the guide member 60 on both the left and right sides. The locking plate 50 can be elastically supported by the first elastic member 81. The first elastic member 81 can be a spring.

[0063] When the pressure member 40 rotates in the locking direction, the locking plate 50 is pushed in the locking direction by the pressure member 40, so that the locking protrusion 51 provided on one side is inserted into the locking hole 211 provided on the side wall 21 of the lower guide rail 20, thereby achieving a locked state in which the upper guide rail 10 cannot move along the lower guide rail 20.

[0064] When the pressure member 40 rotates in the locking release direction and the pressure of the pressure member 40 disappears, the locking plate 50 can achieve the locking release state by the elastic restoring force of the first elastic member 81, which allows the locking protrusion 51 inserted in the locking hole 211 to disengage from the locking hole 211, while the upper guide rail 10 can move along the lower guide rail 20.

[0065] The upper guide rail 10 can slide along the lower guide rail 20 in a state of being inserted into the interior of the lower guide rail 20. The lower part of the upper guide rail 10 and the inner bottom surface of the lower guide rail 20 can be separated by various known structures or various known structures such as rollers.

[0066] A first assembly space 11 and a second assembly space 12 can be provided on both sides of the first assembly space 11 along its length. The width W1 of the first assembly space 11 can be configured to be larger than the width W2 of the second assembly space 12.

[0067] Since the locking protrusion 51 protrudes beyond the two sides of the main body 61, the locking plates 50 installed on both sides of the upper surface of the main body 61 of the guide member 60 are preferably assembled in a first assembly space 11 with a width W1 greater than the width W2 of the second assembly space 12.

[0068] The sidewall 111 of the first assembly space 11 of the upper guide rail 10 can protrude in the direction of the sidewall 21 of the lower guide rail 20.

[0069] The support member 62 can be configured to face each other on both sides of the main body 61 along its length. The support member 62 can have a guide groove 621. The guide groove 621 can be provided on the side of the support member 62 facing the main body 61.

[0070] The locking plate 50 can slide stably in the locking direction with its one end and the other end inserted into the guide groove 621 of the support member 62 in the longitudinal direction.

[0071] The main body 61 has a pair of left and right locking protrusions 67 on one side of the length direction and another pair of left and right locking protrusions 67 on the other side of the length direction. Due to the formation of the locking protrusions 67, an insertion space 64 can be formed between the upper surface of the main body 61 and the locking protrusions 67.

[0072] The locking plate 50 can be moved in the locking direction by the locking protrusion 67 while it is inserted into the insertion space 64 on the other side.

[0073] The locking plate 50 may include a through hole 52 and a receiving groove 53. The through hole 52 may be provided on both sides of the locking plate 50 along its length. The first elastic member 81 may be inserted into the through hole 52. The receiving groove 53 may be provided on the other side of the locking plate 50.

[0074] When the locking protrusions 67 are positioned opposite each other in the receiving grooves 53 of the pair of locking plates 50 on the left and right sides of the main body 61, a receiving space SP that conforms to the width of the pressure member 40 can be formed. The locking protrusions 67 can be located inside the receiving grooves 53 of the locking plates 50.

[0075] The main body 61 and the support member 62 can be connected by a connecting part 65 and locking shafts 66 provided on both sides through the connecting part 65. The connecting part 65 can be located at the center of the facing surfaces of the main body 61 and the support member 62.

[0076] One end of the first elastic member 81 can be inserted through the through hole 52 on the bottom surface of the locking plate 50. The other end of the first elastic member 81 can be provided with a hook 811. The hook 811 can be assembled to be locked onto the locking shaft 66.

[0077] As described above, since the hooks 811 at one end and the other end of the first elastic member 81 are assembled to lock into the through hole 52 and the locking shaft 66, the pair of left and right locking plates 50 placed on both sides of the main body 61 are pushed in the locking direction by the pressure of the pressure member 40, and when the pressure of the pressure member 40 disappears, they move in the locking release direction by the elastic restoring force of the first elastic member 81.

[0078] The sidewall 111 of the first assembly space 11 may have a guide hole 111a. The guide hole 111a may be configured to match the locking hole 211. During the locking operation of the locking plate 50, the locking protrusion 51 may be inserted through the guide hole 111a and the locking hole 211.

[0079] As described above, since the locking protrusion 51 is simultaneously inserted into the guide hole 111a of the upper guide rail 10 and the locking hole 211 of the lower guide rail 20, the upper guide rail 10 and the lower guide rail 20 can be in a securely locked state.

[0080] The main body 61 and the supporting member 62 can be configured as a single unit. The main body 61 and the supporting member 62 can be connected by a third elastic member 83. The third elastic member 83 can be a spring.

[0081] The surfaces of the main body 61 and the supporting member 62 facing each other may have assembly holes 611 and 622 for engaging with the third elastic member 83. One end and the other end of the third elastic member 83 may engage with the assembly holes 611 and 622 of the main body 61 and the supporting member 62.

[0082] For example, the support member 62 can be configured as a structure that allows the main body 61 to be separated. Specifically, it can be configured such that the support member 62 and the main body 61 are connected by a third elastic member 83, so that the support member 62 can move in the length direction of the main body 61.

[0083] When assembling the locking plate 50, if the support members 62 located on both sides of the main body 61 in the length direction are pulled, the third elastic member 83 will extend and the distance between the two support members 62 will widen, making it easy to assemble the ends of the locking plate 50 in the length direction to the guide grooves 621 of the two support members 62.

[0084] Figure 7 This is an enlarged view of a lever according to a preferred embodiment of the present invention.

[0085] like Figure 7 As shown, the upper part of the hinge shaft 30 can be rotatably supported by at least one support frame F attached to the upper guide rail 10.

[0086] The lever L can be engaged with the upper portion of the hinge shaft 30 exposed on the upper part of the upper guide rail 10. The lever L can be elastically supported by the second elastic member 82.

[0087] The second elastic member 82 can be attached to the hinge shaft 30, and one end of it can be connected to the lever L. The elastic restoring force of the second elastic member 82 can act on the lever L. The lever L can be connected to a pulling member 90, such as a wire.

[0088] When the pulling member 90 is pulled, the lever L can rotate in the locking direction. As the lever L rotates in the locking direction, the rotational force of the lever L acts on the hinge shaft 30, thereby allowing the hinge shaft 30 to rotate in the locking direction.

[0089] When the pulling member 90 is released, the lever L can rotate in the unlocking direction by the elastic restoring force of the second elastic member 82. As the lever L rotates in the unlocking direction by the elastic restoring force of the second elastic member 82, the rotational force of the lever L acts on the hinge shaft 30, thereby allowing the hinge shaft 30 to rotate in the unlocking direction.

[0090] Next, the locked-out state of the present invention will be described.

[0091] Figure 8 This is a perspective view showing the state before locking according to a preferred embodiment of the present invention. Figure 9 This is a top view showing the locking plate in its pre-locking state according to a preferred embodiment of the present invention. Figure 10 yes Figure 8 BB line cross-section diagram.

[0092] like Figures 8 to 10 As shown, when the pulling force of the pulling member 90 is not applied to the lever L, the lever L can remain in the unlocked state. Since the lever L does not rotate, the rotational force of the lever L is not applied to the hinge shaft 30.

[0093] Since the hinge shaft 30 did not rotate, the pressure member 40 connected to the lower part of the hinge shaft 30 did not move.

[0094] Since the width of the pressure member 40 is located at a position corresponding to the width of the accommodating space SP, the locking plates 50 on both sides will not be pushed in the locking direction.

[0095] Since the locking plates 50 on both sides will not be pushed in the locking direction, the locking protrusion 51 of the locking plate 50 can be released from the locking state when it is not inserted into the locking hole 211.

[0096] When the lock is released, the upper guide rail 10 can move freely along the lower guide rail 20, thereby allowing the vehicle seat (not shown) connected to the upper guide rail 10 to be moved to the desired position.

[0097] Next, the locking operation of the present invention will be described.

[0098] Figure 11 This is a top view showing the operation of the locking plate during locking according to a preferred embodiment of the present invention.

[0099] like Figure 5 , Figure 6 and Figure 11 As shown, when the pulling member 90 is pulled in the locking direction, the lever L can rotate in the locking direction.

[0100] As lever L rotates in the locking direction, the rotational force of lever L acts on hinge shaft 30, thereby allowing hinge shaft 30 to rotate in the locking direction.

[0101] As the hinge shaft 30 rotates in the locking direction, the pressure member 40 connected to the lower part of the hinge shaft 30 can rotate in the locking direction.

[0102] As the pressure member 40 rotates in the locking direction, one end and the other end of the pressure member 40 in the length direction can push the two locking plates 50 in the locking direction.

[0103] As the locking plate 50 is pushed in the locking direction, the locking protrusion 51 of the locking plate 50 can be simultaneously inserted into the guide hole 111a of the upper guide rail 10 and the locking hole 211 of the lower guide rail 20. Thus, a locked state can be achieved in which the upper guide rail 10 cannot move along the lower guide rail 20.

[0104] As the locking protrusion 51 is simultaneously inserted into the guide hole 111a of the upper guide rail 10 and the locking hole 211 of the lower guide rail 20, a secure locking state can be achieved between the upper guide rail 10 and the lower guide rail 20.

[0105] The upper part of the locking plate 50 is supported by the expansion part 31, and the end part on one side and the end part on the other side in the length direction slide along the guide groove 621 of the support member 62 in the locking direction, so that the locking operation can be performed smoothly without gaps during the locking operation.

[0106] When the pulling member 90 is released, the lever L can rotate in the unlocking direction to return to its original position by the elastic restoring force of the second elastic member 82.

[0107] As lever L rotates in the direction of unlocking, hinge shaft 30 can also rotate in the direction of unlocking.

[0108] As the hinge shaft 30 rotates in the unlocking direction, the pressure member 40 connected to the lower part of the hinge shaft 30 can rotate together with the hinge shaft 30 in the unlocking direction.

[0109] As the pressure member 40 rotates in the direction of locking release, the pressure applied by the pressure member 40 to the locking plates 50 on both sides will disappear.

[0110] When the pressure applied by the pressure member 40 to the locking plate 50 disappears, the locking plate 50 can return to its original position by the elastic restoring force of the first elastic member 81.

[0111] As the locking plate 50 returns to its original position, the locking protrusion 51 inserted into the locking hole 211 disengages from the locking hole 211, thereby achieving the unlocked state in which the upper guide rail 10 can move freely along the lower guide rail 20.

[0112] The above description is merely an exemplary depiction of the technical concept of the present invention. Those skilled in the art can make various modifications, alterations, and substitutions without departing from the essential characteristics of the present invention. Therefore, the embodiments and accompanying drawings disclosed in this invention are for illustration and not limitation of the technical concept of the present invention. The scope of the technical concept of the present invention is not limited to the above-described embodiments and accompanying drawings. The scope of protection of this invention should be interpreted by the appended claims, and all technical concepts within the same scope are considered to fall within the scope of the claims of this invention.

Claims

1. A seat rail locking device, wherein, The seat rail locking device includes: The hinge axis is rotatably supported on the upper guide rail; A pressure-applying component, connected inside the upper guide rail to the lower part of the hinge shaft, is capable of rotating together with the hinge shaft; and The locking plate is elastically supported by the first elastic member. While moving in the locking direction by the pressure of the pressure member, the locking protrusion on one side is inserted into the locking hole of the lower guide rail.

2. The seat guide rail locking device according to claim 1, wherein, When the pressurizing member rotates in the locking direction, the pressurizing force of the pressurizing member acts on the locking plate. While the locking plate is pushed in the locking direction, the locking protrusion is inserted into the locking hole provided on the side wall of the lower guide rail.

3. The seat guide rail locking device according to claim 1, wherein, When the pressurizing member rotates in the unlocking direction, the pressurizing force acting on the locking plate disappears. Through the elastic restoring force of the first elastic member, the locking plate is pushed in the unlocking direction, and the locking protrusion disengages from the locking hole on the side wall of the lower guide rail.

4. The seat guide rail locking device according to claim 1, wherein, The pressure member is configured such that its length is greater than its width, and while rotating in the locking direction, it applies pressure in the locking direction to the locking plates on one end and the other end, which have length directions on both sides.

5. The seat guide rail locking device according to claim 1, wherein, The locking plate is mounted on the main body of the guide member. The upper guide rail has a first assembly space at the bottom and second assembly spaces on both sides of the first assembly space along its length, with the first assembly space having a wider width than the second assembly space.

6. The seat guide rail locking device according to claim 5, wherein, The guide member further includes a support member, which is connected to the main body inside the first assembly space and is opposite to each other on both sides of the main body in the length direction.

7. The seat guide rail locking device according to claim 6, wherein, The locking plates are disposed on both sides of the upper surface of the main body inside the first assembly space, and are assembled such that the locking protrusions protrude more than the two sides of the main body.

8. The seat rail locking device according to claim 6, wherein, The locking plate is inserted into the guide groove provided in the support member along its length, with one end portion and the other end portion inserted along its length.

9. The seat guide rail locking device according to claim 6, wherein, The guiding component further includes: The locking protrusions are present in at least one pair on the main body; and An insertion space is formed between the upper surface of the main body and the locking protrusion; With the locking plate inserted into the insertion space from the other side, it is guided by the locking protrusion and thus can move in the locking direction.

10. The seat rail locking device according to claim 6, wherein, The hinge shaft has an expansion portion in its lower outer diameter section. The locking plate is locked in the expansion portion to restrict its upward movement. The bottom surface of the expansion portion has a connecting hole. With the connecting hole engaging with a connecting protrusion on one side of the pressure member, the connecting member is threaded onto the hinge shaft through the connecting protrusion and the connecting hole on the other side of the pressure member.

11. The seat rail locking device according to claim 10, wherein, At least a portion of the side surface of the connecting protrusion is formed by a plane, and at least a portion of the connecting hole is formed by a plane corresponding to the plane of the connecting protrusion.

12. The seat guide rail locking device according to claim 10, wherein, The head of the connecting member is inserted into a receiving hole formed in the center of the body and can be rotatably assembled.

13. The seat rail locking device according to claim 6, wherein, The locking plate includes: Through holes, located on both sides along the length direction, are used to insert the first elastic member; and A receiving groove, located on the other side, is used to insert the pressurizing member.

14. The seat rail locking device according to claim 13, wherein, When the receiving grooves of the two locking plates on the upper sides of the main body are arranged opposite each other, a receiving space that conforms to the width of the pressure member is formed.

15. The seat rail locking device according to claim 14, wherein, The main body and the supporting member are connected by a connecting part and locking shafts provided on both sides of the connecting part. The first elastic member is assembled such that one end is inserted into the through hole, and a hook provided on the other end is locked to the locking shaft.

16. The seat rail locking device according to claim 1, wherein, The upper part of the hinge shaft is rotatably supported by at least one support frame connected to the upper guide rail. The upper part of the hinge shaft exposed above the upper guide rail is connected to a lever that is elastically supported by a second elastic member. The lever is connected to a pulling member. When the pulling member is pulled, it rotates in the locking direction and transmits rotational force to the hinge shaft. When the pulling force of the pulling member disappears, it returns to its original position by the elastic restoring force of the second elastic member.

17. The seat rail locking device according to claim 6, wherein, The guide hole provided on the side wall of the first assembly space interval is configured to correspond to the locking hole provided on the side wall of the lower guide rail. During the locking operation of the locking plate, the locking protrusion is inserted through the guide hole and the locking hole.

18. The seat rail locking device according to claim 17, wherein, The sidewall of the first assembly space section protrudes towards the sidewall of the lower guide rail.

19. The seat rail locking device according to claim 6, wherein, The main body and the supporting member are connected by a third elastic member.

20. The seat guide rail locking device according to claim 19, wherein, The two ends of the third elastic member are connected to assembly holes on the facing surfaces of the main body and the support member.

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