Seat lock device

Abstract

To provide a seat lock device that can make both prevention of falling off of a striker and suppression of rattling compatible.SOLUTION: A seat lock device 1, which clocks a seat 10 at a position at which the seat is jumped up to a side wall, comprises a base 5 and a hook 6. The base 5 regulates movements of a striker S provided in the seat 10 caused by the jumping-up of the seat, at the position at which the seat is jumped up. The hook 6 is provided to be rotatable with respect to the base 5, which is hooked on a back side of the striker S accompanying the jumping-up of the seat 10 to hold the striker S between the base 5 and the hook. The hook 6 has a hooking part 6B that is pressed and turned by the striker S against spring force accompanying the jumping-up of the seat 10 and then is rotated and returned by the spring force together with passing of the striker S to be hooked on the back side of the striker S. In a hooking surface 6B2 that is hooked on the striker S of the hooking part 6B, an inclination angle α at which the striker S is pushed to the base 5 accompanying progress of the rotation and return of the hook 6 is set.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a seat lock device, and more particularly to a seat lock device that locks a vehicle seat in a flipped-up position against a side wall of a vehicle. [Background technology]

[0002] A space-up seat is known that can expand the luggage compartment by flipping up the seat cushion against the side wall of the vehicle (Patent Document 1). The space-up seat described in Patent Document 1 is configured such that, as the seat cushion is flipped up, a striker provided on the back of the seat cushion is pushed into a seat lock device provided on the side wall of the vehicle and locked. The seat lock device has a restricting portion that restricts the receiving position of the striker and a hook that is hooked onto the back of the received striker.

[0003] As the striker is pushed in, the hook at the tip is pushed aside in the rotational direction against the spring force. Then, as the striker is completely pushed in, the hook rotates back due to the spring force and hooks onto the back of the striker. As a result, the hook holds the striker sandwiched between the hook at the tip and the restricting portion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-172180 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned conventional technology, the hooking portion of the hook is configured so that the hooking surface faces the rotation center of the hook. As a result, the hook is not pushed around even when it receives a reaction force from the striker hooked on the hooking portion, and the hook is configured to appropriately prevent the striker from falling off. However, on the other hand, the hook is configured so that it is difficult to close the gap between the hook and the restricting portion, which causes a problem that the striker is prone to rattle. Therefore, the present invention provides a seat lock device that can prevent the striker from falling off and suppress rattle at the same time. [Means for solving the problem]

[0006] In order to solve the above problems, the seat lock device of the present invention takes the following measures.

[0007] That is, the seat lock device of the present invention is a seat lock device that locks a vehicle seat in a flipped-up position against a side wall of a vehicle. This seat lock device has a restricting portion and a hook. The restricting portion restricts movement of a striker provided on the vehicle seat associated with flipping up at the flipped-up position. The hook is provided so as to be rotatable relative to the restricting portion, and is hooked onto the back of the striker as the vehicle seat is flipped up to hold the striker between the restricting portion and the striker.

[0008] The hook has a hooking portion that is pushed around by the striker against the spring force as the vehicle seat is flipped up, and then rotates back due to the spring force as the striker passes and is hooked onto the back of the striker. An inclination angle is set on the hooking surface of the hooking portion that is hooked onto the striker, so that the striker is driven toward the restriction portion as the hook rotates back.

[0009] According to the above configuration, the inclination angle set on the hooking surface of the hook makes it possible to drive the striker into the restricting portion and lock it in a narrowed gap state. As the striker enters, the hook is once pushed aside against the spring force, and then rotates back and hooks behind the striker, preventing the striker from falling out. Therefore, the hook can prevent the striker from falling out and suppress rattling at the same time.

[0010] The seat lock device of the present invention may be further configured as follows: The restricting portion and / or the striker has a position correction structure that enables a deviation in the front-rear direction of the seat from a reference position where the striker movement is restricted to be corrected by displacement in the front-rear direction of the seat. The restricting portion has a concave surface that restricts the position of the striker by abutting it against two points in the front-rear direction of the seat.

[0011] According to the above configuration, the striker can be appropriately held in position by abutting against a total of three points: one point on the engagement surface of the hook and two points on the concave surface of the restriction portion.

[0012] The seat lock device of the present invention may be further configured as follows: The position correction structure includes a pin connection structure that enables the restriction portion to rotate coaxially with the hook.

[0013] According to the above configuration, the position correction structure can be realized by a simple configuration in which the restriction portion is connected to the hook by a pin so as to be rotatable coaxially with the hook. [Brief description of the drawings]

[0014] [Figure 1] 1 is a perspective view illustrating a schematic configuration of a seat lock device according to a first embodiment. [Diagram 2] FIG. 4 is an enlarged perspective view illustrating a locked state of the seat lock device. [Diagram 3] FIG. 2 is a partial cross-sectional perspective view of the seat lock device. [Figure 4] FIG. 4 is an enlarged perspective view showing the seat lock device in an unlocked state. [Diagram 5] FIG. 2 is an exploded perspective view of the seat lock device. [Figure 6] FIG. 6 is an exploded perspective view of FIG. 5 as seen from the back side. [Figure 7] FIG. 3 is a rear view of FIG. 2. [Figure 8] FIG. 2 is a partial cross-sectional view showing an initial state of the seat lock device. [Figure 9]11 is a partial cross-sectional view showing a state in which the striker is pushed into the hook as the vehicle seat is flipped up. FIG. [Figure 10] FIG. 11 is a partial cross-sectional view showing a state in which the hook is hooked onto the back of the striker as the striker passes. [Figure 11] 11 is a partial cross-sectional view showing a state in which the striker enters the seat lock device from a position shifted to the rear of the seat. FIG. [Figure 12] FIG. 11 is a partial cross-sectional view showing a state in which the base plate has rotated in response to a shift in the striker. [Figure 13] 11 is a partial cross-sectional view showing a state in which the hook has been released by operating the operating lever. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0016] First Embodiment (General configuration of the seat lock device 1) First, the configuration of a seat lock device 1 according to a first embodiment of the present invention will be described with reference to Figs. 1 to 13. In the following description, when directions such as front, rear, up, down, left and right are indicated, they refer to the respective directions shown in each drawing. The forward direction in each drawing represents the traveling direction of the automobile. In the following description, when no specific reference drawing is indicated or when no reference drawing has a reference symbol, any of Figs. 1 to 13 will be referred to as appropriate.

[0017] As shown in Fig. 1, a seat lock device 1 according to this embodiment is disposed on the right side wall inside the vehicle cabin. This seat lock device 1 is configured as a lock device that locks a seat (vehicle seat) 10, which constitutes the right rear seat of the vehicle, in a flipped-up position against the right side wall of the vehicle.

[0018] The seat 10 includes a seat back 11 serving as a backrest and a seat cushion 12 serving as a seating area, and is installed facing forward on the vehicle floor F. The seat 10 is configured as a space-up seat that can be flipped up against the right side wall of the vehicle by operating a lever (not shown) when not in use to expand the luggage compartment.

[0019] Specifically, the seat 10 is switched to a state in which the seat back 11 is folded onto the upper part of the seat cushion 12 by operating the lever (not shown). Furthermore, the seat 10 is released from a locked state in which the left side of the seat cushion 12 is locked against the floor F by operating the lever.

[0020] As a result, the seat 10 is flipped up toward the right side wall of the vehicle with the assistance of spring force together with the folded seat back 11 around a hinge (not shown) that connects the right side of the seat cushion 12 to the floor F (or the right side wall of the vehicle). As the seat 10 is flipped up, a striker S provided at the left rear end of the seat cushion 12 is pushed into and locked by the seat lock device 1 provided on the right side wall of the vehicle.

[0021] The striker S is a press-formed product formed by bending a single metal round bar member into a U-shape. Both ends of the striker S are integrally joined to the left rear end of the seat cushion 12.

[0022] The striker S is bent so that it projects rearward from both ends fixed to the seat cushion 12 and then extends from there into an inverted U-shape in the flip-up direction of the seat cushion 12. As a result, when the seat 10 is flipped up, the striker S is configured so that a round bar-shaped engagement bar S1 connecting both legs of the inverted U-shape extends vertically and is pushed into the seat lock device 1 from the inside (left side) of the vehicle, thereby being locked.

[0023] As shown in Figures 2 and 3, the seat lock device 1 has an engagement structure in which, as the striker S is pushed in, the hook 6 is once pushed aside against the spring force, and then as the striker S passes, the hook 6 rotates back and catches on the rear (left surface) of the striker S. By being caught, the hook 6 holds the striker S in a sandwiched state between itself and the concave surface 5D of the base 5, and a locked state is established in which the striker S is prevented from falling out. Here, the base 5 corresponds to the "regulating portion" of the present invention.

[0024] The locked state of the hook 6 is released when the user manually pulls an operating lever 6C, which is directly connected to the rear end of the hook 6, backward, as shown in Fig. 4. After the release, the seat 10 is manually moved from the state in which it has been flipped up against the right side wall of the vehicle to the state where it is dropped onto the floor F around the hinge (not shown). At that time, the fingers of the user who has performed the operation of pulling the operating lever 6C backward are moved to a position rearwardly out of the movement trajectory of the striker S accompanying the dropping of the seat 10, due to the arrangement structure of the operating lever 6C.

[0025] Thereby, the operating lever 6C is configured to reduce contact of the user's fingers with the striker S when releasing the hook 6 and dropping the seat 10 accordingly. Therefore, the user can appropriately perform a series of operations from manually releasing the hook 6 to dropping the seat 10 onto the floor F.

[0026] (Configuration of each part of the seat lock device 1) The following describes a specific configuration of each part of the seat lock device 1. As shown in Fig. 5 and Fig. 6, the seat lock device 1 includes a vehicle fastening bracket 2, a bezel 3, a pin 4, a base 5, a hook 6, a base-side torsion spring 7, and a hook-side torsion spring 8.

[0027] The vehicle fastening bracket 2 is made of a press-formed metal plate that is bent into a frame shape with one side open. The vehicle fastening bracket 2 is integrally fixed to the right side wall of the vehicle (not shown) by bolting various points around the periphery.

[0028] The bezel 3 is made of a resin injection-molded product molded into a frame shape that opens toward the inside (left side) of the vehicle. The bezel 3 is fitted into the frame of the vehicle fastening bracket 2 from the inside (left side) of the vehicle, so that each of the locking portions 3A formed to protrude from the peripheral side surface is set in a state where it abuts against the peripheral portion on the left side of the vehicle fastening bracket 2. The bezel 3 is fixed integrally to the vehicle fastening bracket 2 by the pin 4, which is inserted penetrating the vehicle fastening bracket 2 from above, being inserted also penetrating the base of the bezel 3 (see Figs. 2 and 3).

[0029] The pin 4 is made of a metal round bar member extending in the height direction. The pin 4 is set in a state where it is inserted between the upper and lower frame sides of the vehicle fastening bracket 2 so as to penetrate the bezel 3, base 5, and hook 6 from above (see Figs. 2 to 3 and 7).

[0030] As shown in Fig. 2, the base 5 is made of a resin injection-molded product molded into a shape that fits in the height direction inside the frame of the bezel 3. More specifically, as shown in Figs. 6 and 7, the base 5 is formed in a box shape with a U-shaped cross section that opens to the rear. The base 5 is set inside the frame of the bezel 3, and the above-mentioned pin 4 is inserted into its base from above, whereby the base 5 is assembled in a state in which it is supported rotatably relative to the vehicle fastening bracket 2 (see Figs. 2, 3 and 7).

[0031] 5 to 7, the base 5 is constantly biased to rotate clockwise in a plan view (clockwise in Figs. 5 and 6) about the pin 4 by the spring force of a base-side torsion spring 7 hooked between the base 5 and the vehicle fastening bracket 2. As a result, in the initial state before the striker S enters the seat lock device 1, as shown in Fig. 8, the base 5 is held in an initial position where a cushion pad 5E affixed to the center of the front surface of the base 5 comes into contact with and engages with the vehicle fastening bracket 2.

[0032] 2, the base 5 has a flat partition wall 5A extending in the direction of the radius of rotation so as to divide the inside of the frame of the bezel 3 into front and rear parts. The partition wall 5A has a through hole 5B formed therein, which is an elongated hole through which the hook portion 6B at the tip of the hook 6 can be passed from the rear.

[0033] The base 5 has an inclined plate 5C that extends obliquely backward from an edge on the outer side (left side) in the radial direction of the partition wall 5A, and has a concave surface 5D that extends forward from an edge on the inner side (right side) in the radial direction of the partition wall 5A, and forms a V-shaped recessed surface in cross section toward the inside of the vehicle (left side).

[0034] 8 and 9, the base 5 receives the engagement bar S1 of the striker S, which moves from the inside (left side) of the vehicle as the seat 10 is flipped up, along the front surface of the partition wall 5A. Then, as shown in FIG. 10, the base 5 restricts the movement of the striker S by the engagement bar S1 of the striker S hitting the concave surface 5D.

[0035] The concave surface 5D is structured so that the engagement bar S1 of the striker S is supported at two points by abutting against both inclined surfaces that are recessed into a V-shape in cross section, thereby receiving the engagement bar S1 of the striker S at the center of the V. As shown in Fig. 11, even if the engagement bar S1 of the striker S moves from a position shifted rearward from the center (reference position) of the V of the concave surface 5D due to the installation of its surrounding parts, as shown in Fig. 12, this shift is corrected by a rotational displacement about the pin 4, so that the engagement bar S1 of the striker S is always received at the center of the V of the concave surface 5D.

[0036] 11, when the engagement bar S1 of the striker S moves from a position shifted backward, the base 5 causes the engagement bar S1 to abut against the inclined plate 5C. As a result, the base 5 is pushed backward around the pin 4 by the pressing force from the engagement bar S1 of the striker S.

[0037] As a result, as the striker S enters, the base 5 is pushed and rotated backward to receive the striker S along the front surface of the partition wall 5A. As the base 5 rotates as described above, the striker S hits both slopes of the concave surface 5D and is received at the center of the V, as shown in FIG.

[0038] The hook 6 is made of a laminated component in which a resin coating is applied to a press-molded metal plate formed into an L-shaped plate, as shown in Figures 3 and 5 to 6. The hook 6 is set in the frame of the bezel 3 so as to enter the U-shaped cross section of the base 5 from the rear, as shown in Figures 2 to 3 and 7 to 8.

[0039] The hook 6 is attached to the vehicle fastening bracket 2 together with the base 5 in a rotatable manner by inserting the pin 4 into the base of the hook 6 from above (see Figs. 2 to 3 and 7). The hook 6 and the base 5 are attached to the vehicle fastening bracket 2 so as to be rotatable relative to each other.

[0040] 5 to 7, the hook 6 is constantly biased to rotate clockwise in a plan view (clockwise in Figs. 5 and 6) about the pin 4 by the spring force of a hook-side torsion spring 8 hooked between the hook 6 and the vehicle fastening bracket 2. As a result, in the initial state before the striker S enters the seat lock device 1, as shown in Fig. 8, the hook 6 is held in an initial position where a pair of left and right cushion rubbers 6D (see Fig. 5) attached to the front portion of an operating lever 6C integral with the hook 6 come into contact with and are engaged with ribs 5F (see Fig. 6) protruding from the inner rear surface of the U-shaped cross section of the base 5.

[0041] That is, the hook 6 is configured such that the rotation biased by the hook-side torsion spring 8 is stopped by abutment with the base 5. As shown in Figures 3 and 5 to 6, the hook 6 has an arm portion 6A extending in a long plate shape in the direction of the rotation radius from a base portion on the side of the rotation center through which the pin 4 is inserted.

[0042] The hook 6 has a hook portion 6B that extends in a tapered plate shape from the tip of the arm portion 6A toward the front, which is the direction of rotation. The hook 6 also has an operating lever 6C that is integrally connected to the rear part of the tip side of the arm portion 6A and extends from the arm portion 6A in a shape that bulges out rearward and toward the inside (left side) of the vehicle.

[0043] The operating lever 6C is made of a resin injection-molded product integrally molded with the hook 6. As shown in Fig. 5, the operating lever 6C has a flat finger hook surface portion 6C1 that extends upward from the rear of the tip side of the arm portion 6A toward the outside in the direction of the rotation radius with its face facing forward. The operating lever 6C also has a curved cover surface portion 6C2 that extends and curves backward from the edge of the outer (left) side in the direction of the rotation radius of the finger hook surface portion 6C1.

[0044] 2 and 3, finger hook surface portion 6C1 is shaped to extend from inside the frame of bezel 3 to a position beyond bezel 3 toward the inside (left side) of the vehicle. As a result, finger hook surface portion 6C1 is shaped to extend toward the inside (left side) of the vehicle beyond inclined plate 5C of base 5. Finger hook surface portion 6C1 is configured to form a gap T between striker S entering concave surface 5D of base 5, allowing a user to hook their fingers therein from the inside (left side) of the vehicle.

[0045] The cover surface portion 6C2 is shaped like a curved plate that extends in an arc shape around the rotation center (pin 4) of the hook 6. The cover surface portion 6C2 is set in a state in which the edge portion extending rearward is recessed into the vehicle outer side (right side) of the rear frame edge of the bezel 3. As a result, the cover surface portion 6C2 flatly covers the frame interior of the bezel 3 rearward of the finger hook surface portion 6C1 toward the vehicle interior.

[0046] 8, in the initial state before the striker S enters the seat lock device 1, the hook 6 is rotationally biased by the hook-side torsion spring 8, so that the hook portion 6B on the tip side passes through the through-hole 5B formed in the partition wall 5A of the base 5 and protrudes forward of the partition wall 5A, and is held in a state facing the concave surface 5D of the base 5 in the direction of the rotation radius. As a result, in the initial state, the hook 6 is in a state in which the hook portion 6B on the tip side protrudes onto the movement trajectory of the striker S accompanying the lifting up of the seat 10.

[0047] The hook portion 6B has a pressed surface 6B1 forming its outer circumferential surface and a hook surface 6B2 forming its inner circumferential surface. The pressed surface 6B1 is formed as an inclined surface that is inclined forward toward the rotation center side from a circular arc surface drawn around the rotation center (pin 4) of the hook 6. As a result, as shown in Fig. 9, the pressed surface 6B1 is configured to receive a force that pushes it obliquely backward when the engagement bar S1 of the striker S hits it from the inside (left side) of the vehicle as the seat 10 is flipped up.

[0048] Therefore, when the engagement bar S1 of the striker S is pressed against the pressed surface 6B1 from the inside (left side) of the vehicle as the seat 10 is flipped up, the hook 6 is pushed and rotated rearward about the pin 4 against the spring force of the hook side torsion spring 8. In addition, as shown in Fig. 10, when the engagement bar S1 of the striker S passes through the pressed surface 6B1, the hook 6 rotates back due to the spring force of the hook side torsion spring 8, and the hook surface 6B2, which is the inner peripheral surface of the hook portion 6B, hooks onto the rear of the engagement bar S1.

[0049] The hooking surface 6B2 is formed as an inclined surface that is inclined slightly forward and outward in the direction of the rotation radius from the arc surface described around the rotation center (pin 4) of the hook 6. As a result, the hooking surface 6B2 is configured to have an inclination angle (pressure angle) α that can drive the engagement bar S1 toward the concave surface 5D as the hook 6 rotates back to its original position when the hooking surface 6B2 is hooked onto the back of the engagement bar S1 of the striker S as the hook 6 rotates back to its original position.

[0050] By the above-mentioned driving, the hook 6 has its hooking surface 6B2 hooked onto the back of the engagement bar S1, so that the engagement bar S1 can be supported in a state where it is appropriately abutted against a total of three points, one point on the hooking surface 6B2 and two points on the concave surface 5D of the base 5, with minimal backlash. The inclination angle α of the hooking surface 6B2 is the angle between a line connecting the abutment point between the hooking surface 6B2 and the engagement bar S1 and the axis of the pin 4, which is the rotation center of the hook 6, and a line passing through the abutment point and perpendicular to the hooking surface 6B2.

[0051] If the inclination angle α of the hook surface 6B2 is large, the hook bar S1 can be efficiently driven toward the concave surface 5D as the hook 6 rotates back. However, on the other hand, the hook 6 is easily pushed backward around the pin 4 by the reaction force from the hook bar S1, and the function of preventing the hook bar S1 from falling off is easily impaired.

[0052] On the other hand, if the inclination angle α is small, the hook surface 6B2 is directed toward the axis of the pin 4, which is the rotation center of the hook 6, so that the hook 6 is less likely to be pushed backward even if it receives a reaction force from the engagement bar S1. As a result, the hook 6 can hold the engagement bar S1 in a more appropriate state to prevent it from falling off. However, on the other hand, as the hook 6 rotates to return to its original position, the function of driving the engagement bar S1 toward the concave surface 5D is easily impaired.

[0053] Therefore, taking the above into consideration, the inclination angle α of the hook surface 6B2 is set to an angle that can appropriately prevent the engagement bar S1 from falling off while appropriately driving the engagement bar S1 into the concave surface 5D as the rotation return of the hook 6 progresses. As described above in Figures 11 and 12, the hook 6 is configured such that the biased rotation by the hook-side torsion spring 8 is stopped by abutment with the base 5 in accordance with the rotation position of the base 5, which rotates in accordance with the insertion position of the striker S in the front-rear direction.

[0054] 10 and 12, even if the insertion position of the striker S is displaced, the angular position at which the hook 6 hooked onto the engagement bar S1 of the striker S is prevented from rotating relative to the base 5 is always constant. For this reason, even if the insertion position of the striker S is displaced, the engagement bar S1 of the striker S can always be supported in an appropriate state with minimal backlash by being in contact with a total of three points: one point on the hooking surface 6B2 and two points on the concave surface 5D of the base 5.

[0055] 8, in the initial state before the striker S enters the seat lock device 1, the operating lever 6C is configured so that the hook 6 abuts against the base 5 to prevent rotation at the initial position. For this reason, the operating lever 6C is configured so that the finger hook surface portion 6C1 is always held in a state in which it protrudes from the rear of the inclined plate 5C of the base 5 toward the inside (left side) of the vehicle.

[0056] As shown in Figures 10 and 12, when the seat 10 is flipped up, the engagement bar S1 of the striker S enters the seat lock device 1 and the hook 6 is hooked onto the back of the engagement bar S1, and the operating lever 6C is returned to the same rotational position as the initial rotational position relative to the base 5 depending on the rotational position of the base 5.

[0057] 10 and 12, the operating lever 6C is configured such that a gap T is formed between the finger hook surface 6C1 and the striker S inserted into the concave surface 5D of the base 5, allowing a user to hook their fingers from inside (left side) of the vehicle, even in the locked state in which the hook portion 6B of the hook 6 is hooked behind the engagement bar S1 of the striker S. The seat lock device 1 can be released from the locked state by the hook 6 by performing an operation of hooking the user's fingers on the finger hook surface 6C1 and pulling it backward from a position standing at the rear of the vehicle, as shown in FIG.

[0058] Specifically, when a user hooks his / her finger on the finger hook surface portion 6C1 of the operating lever 6C and pulls it backward, the hook 6 that is integral with the operating lever 6C is pulled backward around the pin 4. This releases the hook portion 6B from the hooked state on the hook 6, and the striker S is released from the locked state.

[0059] The above-mentioned release allows the seat 10 to be dropped, and as the seat 10 is dropped, the striker S is pulled away from the seat lock device 1 toward the inside (left side) of the vehicle. At that time, the fingers of the user who has performed the operation of pulling the operating lever 6C rearward are pulled further rearward from the initial position located rearward of the striker S.

[0060] For this reason, the fingers of the user who operates the operating lever 6C are always positioned rearward and out of the movement path of the striker S accompanying the dropping of the seat 10. Therefore, when the seat 10 is dropped onto the floor F after the operation of the operating lever 6C, there is no risk of the striker S coming into contact with the fingers of the user, and the manual operation of releasing the hook 6 and the subsequent operation of dropping the seat 10 can be appropriately performed.

[0061] 10 and 12, the finger hook surface 6C1 of the operating lever 6C is separated from the engagement bar S1 of the striker S by a partition wall 5A of the base 5. The finger hook surface 6C1 of the operating lever 6C protrudes from the rear of the inclined plate 5C of the base 5 toward the inside of the vehicle (left side). Therefore, even if the insertion position of the striker S shifts rearward, the base 5 always rotates according to the insertion position of the striker S, so that the distance between the striker S and the engagement bar S1 is always the length (gap T) of the inclined plate 5C in the front-rear direction.

[0062] For this reason, the space between the fingers of the user operating the operating lever 6C and the striker S is always separated by the partition wall 5A, and a gap T is provided between the fingers of the user operating the operating lever 6C and the striker S. This further reduces the risk that the fingers of the user touching the finger rest surface portion 6C1 will come into contact with the striker S.

[0063] (summary) To summarize the above, the seat lock device 1 according to this embodiment has the following configuration: In the following, the reference characters in parentheses correspond to the respective components shown in the above embodiment.

[0064] That is, the seat lock device (1) is a seat lock device (1) that locks a vehicle seat (10) in a flipped-up position against the side wall of a vehicle. The seat lock device (1) has a restricting portion (5) and a hook (6). The restricting portion (5) restricts the movement of a striker (S) provided on the vehicle seat (10) associated with flipping up at the flipped-up position. The hook (6) is provided so as to be rotatable relative to the restricting portion (5), and is hooked onto the back of the striker (S) as the vehicle seat (10) is flipped up, thereby holding the striker (S) between the restricting portion (5) and the striker (S).

[0065] The hook (6) has a hooking portion (6B) which is pushed around by the striker (S) against the spring force as the vehicle seat (10) is flipped up, and then rotates back due to the spring force as the striker (S) passes and is hooked onto the back of the striker (S). A tilt angle (α) is set on a hooking surface (6B2) of the hooking portion (6B) which is hooked onto the striker (S) so as to drive the striker (S) into the restricting portion (5) as the hook (6) rotates back.

[0066] According to the above configuration, the inclination angle (α) set on the hooking surface (6B2) of the hook (6) can drive the striker (S) into the restricting portion (5) and lock it in a narrowed gap state. The hook (6) is once pushed aside against the spring force as the striker (S) enters, and then rotates back and hooks behind the striker (S), preventing the striker (S) from falling off. Therefore, the hook (6) can prevent the striker (S) from falling off and suppress rattling at the same time.

[0067] In addition, the restricting portion (5) and / or the striker (S) have a position correction structure that enables a deviation in the front-rear direction of the seat from a reference position where the movement of the striker (S) is restricted to be corrected by displacing the striker (S) in the front-rear direction of the seat. The restricting portion (5) has a concave surface (5D) that restricts the position of the striker (S) by abutting it against two points in the front-rear direction of the seat. With the above configuration, the striker (S) can be appropriately held in position by abutting against a total of three points: one point on the catch surface (6B2) of the hook (6) and two points on the concave surface (5D) of the restricting portion (5).

[0068] In detail, the position correction structure is composed of a connecting structure of a pin (4) that allows the restriction portion (5) to rotate coaxially with the hook (6). According to the above-mentioned configuration, the position correction structure can be realized by a simple configuration in which the restriction portion (5) is connected to the hook (6) by the pin (4) so ​​as to be rotatable coaxially with the hook (6).

[0069] Other embodiments Although one embodiment of the present invention has been described above, the present invention can be embodied in various forms as described below in addition to the above embodiment.

[0070] 1. The seat lock device of the present invention can be applied to vehicles such as automobiles and trains, as well as to vehicles other than vehicles, such as aircraft and ships.

[0071] 2. The restricting portion does not necessarily have to be provided to be rotatable about the same axis as the hook with respect to the vehicle fastening bracket, and may be configured to be provided integrally with the vehicle fastening bracket. In this case, by providing the striker with a position correction structure that enables the deviation in the seat front-rear direction of the position where the striker enters the restricting portion from the reference position to be corrected by displacement in the seat front-rear direction, it is possible to ensure that the striker always abuts against the concave surface of the restricting portion at two points in the seat front-rear direction.

[0072] As a configuration in which the position correction structure is applied to the striker, for example, a configuration in which the striker is provided so as to be pivotable by rotating or sliding in the front-rear direction of the vehicle seat with respect to the seat may be considered. The position correction structure may be applied to both the restricting portion and the striker.

[0073] 3. The concave surface of the restricting portion is not limited to a V-shaped recessed surface in cross section, but may be a curved recessed surface. [Explanation of symbols]

[0074] 1 Seat lock device 2 Vehicle fastening bracket 3 Bezel 3A Locking part 4 pin 5 Base (Regulation section) 5A Partition wall 5B Through hole 5C inclined plate 5D concave 5E Cushion Pad 5F Rib 6. Hooks 6A Arm section 6B Hook section 6B1 Pressed surface 6B2 Hook surface 6C Operating lever 6C1 Finger rest surface 6C2 Cover surface 6D Cushion Rubber 7 Base side torsion spring 8 Hook side torsion spring 10 Seats (vehicle seats) 11 Seat back 12 Seat cushion S Striker S1 Engagement bar F Floor T Gap α Tilt angle

Claims

[Claim 1] A seat lock device for locking a vehicle seat in a flipped-up position against a side wall of a vehicle, comprising: a restricting portion that restricts a movement of the striker provided on the vehicle seat caused by the striker being lifted at the lifted position; a hook that is provided rotatably relative to the regulating portion and that is hooked onto a rear of the striker when the vehicle seat is flipped up to hold the striker between the striker and the regulating portion, the hook has a hook portion which is pushed around by the striker against a spring force as the vehicle seat is flipped up, and then rotates back to its original position as the striker passes by, and is hooked onto the back of the striker, a hooking surface of the hooking portion on which the striker is hooked is set at an inclination angle such that the striker is driven and pressed against the regulating portion as the rotation return of the hook progresses, and the striker is held by a spring force without being pushed back by a reaction force received from the striker, the restricting portion has a position correction structure that enables a deviation in the front-rear direction of the seat of a position where the movement of the striker is restricted from a reference position to be corrected by a displacement in the front-rear direction of the seat, and a concave surface that restricts the position of the striker in the flip-up direction by abutting against two points in the front-rear direction of the seat, which are both inclined surfaces of a V-shaped recess, A seat lock device, wherein the position correction structure is a pin connecting structure that enables the regulating portion to rotate coaxially with the hook when the striker is pressed against the regulating portion.

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