JP6769192B2 - Vehicle seat lock device - Google Patents

Description

The present invention relates to a vehicle seat lock device. More specifically, the present invention relates to a vehicle seat lock device capable of accepting and locking a striker.

Conventionally, as a seat lock device for locking a vehicle seat on the floor, a seat lock device attached to the vehicle seat is known to be configured to engage and disengage with a striker fixed on the floor. (Patent Document 1). Specifically, the above-mentioned seat lock device includes a base having an opening that allows the striker to be received, and a hook that is pivotally attached to the base and held in a closed state by urging. It is configured to have. In the above-mentioned seat lock device, when the above-mentioned striker is pushed into the receiving port, the hook closing the receiving port is pushed away by the striker and pushed around against the bias. Then, as the striker passes, the hook is returned to the state in which the reception is closed again. As a result, the striker is held locked in the inlet by the hook returned to the closed position.

JP-A-2010-143445

In the above-mentioned prior art, since the hook is urged to close the inlet, the striker is left in the inlet even if the hook is unlocked, and the striker is likely to be relocked after the unlock operation. It ends up. The present invention was conceived to solve the above problems, and the problem to be solved by the present invention is a pop-up that pushes the striker to a position where it is difficult to be relocked by the unlocking operation on the vehicle seat lock device. It is to have a function.

In order to solve the above problems, the vehicle seat lock device of the present invention takes the following means.

The first invention is a vehicle seat lock device capable of accepting and locking a striker. This vehicle seat lock device is formed by engaging a base having an opening-shaped entrance that can accept a striker, a hook that can be switched between a closed state and an open state by rotation with respect to the base, and a hook. It has a pole that locks the hook in a closed state, and an extrusion member that elastically projects a shape into the receiving port and exerts a force to push the striker that has entered the receiving port to the outside. The center of rotation of the hook with respect to the base is set at an eccentric position deviating from the extension of the entry movement path with respect to the striker inlet. The extruded member is held in a position where the striker enters the receiving port and the hook is closed so that it is pushed by the striker trapped by the hook, and the hook is closed. When the lock is released in the state, it is restored from the pushed state, and the repulsive force pushes the striker out of the position confined by the hook, and the restored state is taken.

According to the first invention, the hook is bent around the center of rotation when a force pushed out from the striker confined in the receiving port is applied by setting the center of rotation at the eccentric position. It becomes more susceptible to moment load. However, since the hook is locked in the closed state by engaging with the pole, the striker can be locked by appropriately receiving the above load. Therefore, by setting the extrusion member in such a configuration, the striker can be locked with an appropriate strength by the hook, and the striker is re-operated by the extrusion member that functions independently of the hook during the hook release operation. It can be pushed out to a position where it is difficult to lock so that it pops up properly.

The second invention has the following configuration in the first invention described above. The extruded member has a configuration in which the striker enters the receiving port and the hook is closed so that the striker is directly applied to the hook and sandwiched.

According to the second invention, the striker can be locked in a properly pressed state without rattling between the hook and the extruded member.

The third invention has the following configuration in the first or second invention described above. Further, the extruded member is elastically pressed against the extruded member from the lateral side in the receiving direction of the striker, and the extruded member is pushed to the position where it is pushed by the striker, so that the contact with the extruded member is released by the dent. It has a detection member that is elastically moved so as to be further attracted to the extrusion member.

According to the third invention, the movement of the detection member can be used to easily detect a state in which the striker has entered the receiving port and is locked.

The fourth invention has the following configuration in the third invention described above. When the detection member is pushed to the position where the extruded member is in the pushed state, the detection member is pushed and moved so as to fit a convex shape into the recess formed between the extruded member and the extruded member, and holds the extruded member in the pushed state. It is configured.

According to the fourth invention, the detection member can be rationally functioned as a member for holding the extruded member in the pushed state.

The fifth invention has the following configuration in the third or fourth invention described above. Further, it has an interlocking mechanism for connecting the detection member, the hook and the pole so as to be interlocked with each other. The interlocking mechanism rotates the hook from the open state to the closed state in conjunction with the operation in which the extruded member is pushed to the position where it is pushed by the striker and the detection member is moved so as to be further attracted to the extruded member. At the same time, it is configured to operate so as to engage the pole with the hook.

According to the fifth invention, the interlocking mechanism enables the hook to be locked in a closed state by simply pushing the striker into the receiving port.

The sixth invention has the following configuration in any of the first to fifth inventions described above. The extruded member is held in a position where it is pushed by the striker, and can be held at two positions in the striker receiving direction.

According to this sixth invention, it is possible to appropriately lock two types of strikers having different depth shapes that enter the receiving port.

The seventh invention has the following configuration in the fifth invention described above. When the interlocking mechanism locks the hook in the closed state by engaging with the pole, this fine movement is transmitted to the detection member and the pole even if the hook moves slightly in the rotational direction in which the hook is opened by the load input from the striker. It has a structure that allows it to escape so that it does not escape.

According to the seventh invention, even if a fine movement is generated by a load input from the striker to the hook in which the striker is confined due to the relief structure, the fine movement is not transmitted to the detection member or the pole and is released, so that the hook by the pole can be released. The locked state can be maintained properly.

It is a perspective view which showed the schematic structure of the seat lock device for a vehicle of Example 1. FIG. It is a schematic diagram which showed the state before locking with the striker of the seat lock device for a vehicle. It is an exploded perspective view of the seat lock device for a vehicle. From FIG. 2, it is a schematic view showing a state in which the striker is inserted into the vehicle seat lock device up to the lock position of the first stage. FIG. 4 is a schematic view showing a state in which the vehicle seat lock device locks the striker. FIG. 5 is a sectional view taken along line VI-VI of FIG. FIG. 5 is a sectional view taken along line VII-VII of FIG. It is a schematic diagram showing the state in which the load from the striker is input to the hook in the locked state of FIG. FIG. 5 is a schematic view showing a state in which the locked state of the vehicle seat lock device is released from FIG. FIG. 9 is a schematic view showing a state in which the striker is extruded by the extrusion member from FIG. From FIG. 2, it is a schematic view showing a state in which the striker is inserted into the vehicle seat lock device up to the lock position of the second stage. FIG. 11 is a schematic view showing a state in which the vehicle seat lock device locks the striker. FIG. 12 is a schematic view showing a state in which the locked state of the vehicle seat lock device is released.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

<About the schematic configuration of the seat lock device 10 (seat lock device for vehicles)>
First, the configuration of the seat lock device 10 (seat lock device for vehicles) of the first embodiment will be described with reference to FIGS. 1 to 13. In the following description, when each direction such as front-back, up-down, left-right, etc. is shown, it means each direction shown in each figure. Further, when the term "sheet width direction" is used, it means the width direction (horizontal direction) of the sheet 1 described later. As shown in FIG. 1, the seat lock device 10 of this embodiment is built in the left side portion of the seat back 2 of the seat 1 (vehicle seat) provided as the left rear seat of the automobile. The seat lock device 10 described above has a configuration in which the backrest angle of the seat back 2 can be fixed to the deck side panel DS by locking the striker S protruding from the deck side panel DS (vehicle body) on the left side of the automobile. It is said that.

Here, the above-mentioned seat 1 is configured to include a seat back 2 serving as a backrest portion of a seated occupant and a seat cushion 3 serving as a seating portion. The seat back 2 described above has a configuration in which the lower ends of the left and right sides are hinged to the rear ends of the left and right sides of the seat cushion 3 so that they can be tilted in the front-rear direction. There is. With the above configuration, the seat back 2 can freely change the backrest angle of the seat cushion 3 in the front-rear direction.

The seat back 2 described above can be switched to a state of being folded into the upper surface portion of the seat cushion 3 by tilting the backrest angle to the front side. Further, the seat back 2 is tilted to the rear side by raising its backrest angle, so that the seat lock device 10 described above is pushed into the striker S from the front side and locked in the middle of the tilting, and the seat back 2 is locked. The angle is fixed to the deck side panel DS.

The locked state of the seat lock device 10 described above is released by an operation of the user pulling up the operation knob H provided at the upper portion of the left shoulder opening of the seat back 2. By the above release operation, the seat back 2 is repelled from the striker S to the front side by the pop-up function in which the above-mentioned seat lock device 10 pushes and kicks the striker S to the rear side in accordance with the above release operation. It is designed to be pushed out like this.

Further, the seat back 2 described above has a backrest angle while the seat lock device 10 is unlocked from the striker S as described above and the user pulls up the operation knob H described above. By pushing the striker S so as to tilt it toward the rear side, the striker S can be held at a position where it is tilted further toward the rear side than the previous lock position. Then, in the seat back 2, the seat lock device 10 is locked to the striker S by returning the operation of the operation knob H at the position where the seat lock device 10 is pressed against the striker S. It is designed to be fixed at the position of the backrest angle.

In this way, the seat lock device 10 can lock the backrest angle of the seat back 2 at two lock positions. Further, the seat lock device 10 is released from the locked state with respect to the striker S by the operation of pulling up the operation knob H even at the second stage lock position in which the seat lock device 10 is further tilted backward from the first stage lock position. It is supposed to be done. Then, the seat lock device 10 also operates the pop-up function that pushes and kicks the striker S to the rear side by the release operation, and pushes the seat back 2 from the striker S to the front side so as to bounce it back. It has become like. The seat back 2 described above is inadvertently relocked by the pop-up function of the seat lock device 10 described above, such that after the release operation by the operation knob H described above is performed, the seat back 2 is locked to the striker S again on the spot. It is said that it is difficult to perform.

<About the configuration of each part of the seat lock device 10>
Hereinafter, the specific configuration of each part of the seat lock device 10 described above will be described in detail. As shown in FIGS. 2 to 3, the seat lock device 10 is roughly configured by a base 11, a hook 12, a pole 13, a piece 14, a lever 15, and a release link 16. The piece 14 constituting the seat lock device 10 described above is made of resin, but the other base 11, hook 12, pole 13, lever 15, and release link 16 are all made of metal. Here, the piece 14 corresponds to the "extruded member" of the present invention, the lever 15 corresponds to the "detection member" of the present invention, and the release link 16 corresponds to the "interlocking mechanism" of the present invention.

<About base 11>
The above-mentioned base 11 is composed of a set of two base plates 11A arranged so as to face each other in the seat width direction, and is provided in a state of being integrally fixed to an internal frame (not shown) of the seat back 2. Each base plate 11A constituting the above-mentioned base 11 is formed with an opening-shaped receiving port 11B that can accept the striker S from the rear side at each position facing each other so as to penetrate in the plate thickness direction. Has been done. The above-mentioned receiving port 11B is formed in a shape extending straight from the trailing edge portion of each base plate 11A constituting the above-mentioned base 11 toward the front side.

<About hook 12>
The hook 12 is provided by being hinged and rotatably connected by a support shaft 12A at a position below the receiving port 11B of the base 11 described above. Specifically, the hook 12 described above is arranged so as to be sandwiched between the base plates 11A constituting the base 11 described above. Then, the support shaft 12A is inserted through the hook 12 in the plate thickness direction, and both ends of the support shaft 12A are inserted into the base plate 11A on each side through the plate thickness direction and crimped. As a result, the hook 12 is rotatably hinged to the base 11 (see FIG. 6). As shown in FIG. 2, the hook 12 described above extends its shape from the set position of the support shaft 12A, which is the center of rotation, to the rear side, and further extends upward from the extended end to the upper side in the rotation direction. It has a shape having a hook portion 12B that extends the shape in an arc-shaped curved shape.

The hook 12 described above is in a state in which the hook portion 12B extending in an arc shape on the tip side thereof is pulled downward from the receiving port 11B as shown in FIG. 2 by rotation around the support shaft 12A described above. It is possible to switch between the position and the position in which the inlet 11B is projected from the lower side as shown in FIG. With the above configuration, the hook 12 can switch between an open state (see FIG. 2) and a closed state (see FIG. 5) of the receiving port 11B formed on the base 11 described above. Since the hook 12 described above is arranged as described above, the support shaft 12A, which is the center of rotation thereof, is set at an eccentric position deviated from the extension line EL of the entry movement path with respect to the inlet 11B of the striker S. It is said that it has been done.

The hook 12 described above is always rotated in the counterclockwise direction shown by a spring (not shown) hooked between the hook 12 and the base 11 described above, which is a rotation direction in which the receiving port 11B is closed around the support shaft 12A. It is said to be in a state of being forced. However, as shown in FIG. 2, the hook 12 described above has an attitude control in which the lever 15 hits the piece 14 via the release link 16 described later and the position is restricted in the initial state before the striker S enters the receiving port 11B. By receiving the action of, the receiving port 11B is held in the open state position.

Then, as shown in FIGS. 4 and 11, the above-mentioned hook 12 is released from the position-restricted state due to the contact of the above-mentioned lever 15 with the piece 14 by the movement of the above-mentioned striker S entering the receiving port 11B. As a result, the attitude control state via the release link 16 described above is released, and as shown in FIGS. 5 and 12, the reception port 11B can be switched to the closed state by urging.

The hook 12 described above has a concave step that causes the outer peripheral surface to drop inward in the radial direction at the outer peripheral portion on the front lower side of the support shaft 12A near the set position of the support shaft 12A which is the center of rotation. Part 12C is formed. As shown in FIGS. 5 and 12, the stepped portion 12C has an engaging portion 13B of a pole 13 described later entering the stepped portion when the hook 12 described above closes the receiving port 11B. In this state, it functions as a regulating portion in which rotation in the opening direction (clockwise direction in the drawing) is restricted by engaging with the engaging portion 13B.

<About Paul 13>
As shown in FIGS. 2 to 3, the pole 13 is located below the receiving port 11B of the base 11 described above, specifically, below the set position of the support shaft 12A which is the rotation center of the hook 12 described above. Moreover, it is provided by being hinged and rotatably connected to a portion on the front side by a support shaft 13A. Specifically, the pole 13 described above is arranged so as to be sandwiched between the base plates 11A constituting the base 11 described above, similarly to the hook 12 described above. Then, the support shaft 13A penetrates and is inserted into the pole 13 in the plate thickness direction, and both ends of the support shaft 13A are inserted and inserted into the base plates 11A on each side in the plate thickness direction. As a result, the pole 13 is rotatably hinged to the base 11.

The pole 13 described above has an engaging portion 13B that extends the shape from the set position of the support shaft 13A, which is the center of rotation, to the rear side. The engaging portion 13B described above has a shape in which the outer peripheral surface of the tip extending to the rear side is curved in an arc shape drawn around the support shaft 13A. As shown in FIG. 2, when the hook 12 described above takes the receiving port 11B open, the pole 13 having the above configuration causes the engaging portion 13B to be stepped on the hook 12 by the posture control by the release link 16 described later. It is designed to be removed from the portion 12C downward. However, as shown in FIGS. 5 and 12, when the hook 12 takes the state in which the receiving port 11B is closed, the pole 13 is engaged by the attitude control that is moved in conjunction with the release link 16 described above. The joint portion 13B is inserted into the stepped portion 12C of the hook 12, and the rotation of the hook 12 in the opening direction (clockwise direction in the drawing) is restricted.

Specifically, the engaging portion 13B of the pole 13 described above is in a state in which a slight gap is formed between each other with respect to the outer peripheral surface of the stepped portion 12C of the hook 12 in which the receiving port 11B described above is closed. It is designed to be attached to. However, as shown in FIG. 8, the pole 13 described above receives a strong force toward the outside (rear) from the striker S confined inside the hook 12 in a state where the reception port 11B is closed, and the opening direction (illustration). By making a slight movement so as to be pushed around in the clockwise direction), the outer peripheral surface of the stepped portion 12C of the hook 12 is pressed against the outer peripheral surface of the engaging portion 13B so that the arcuate surfaces of the hook 12 are in surface contact with each other. It has become like. Due to the above contact, the pole 13 can strongly receive the pressing force received from the hook 12 as a compressive force input straight toward the support shaft 13A which is the center of rotation of the hook 12. It is possible to strongly stop the rotational movement in the opening direction (clockwise direction shown in the figure) against the bias.

<About Peace 14>
As shown in FIGS. 2 to 3, the piece 14 is provided in a state of being guided so as to be able to slide in the front-rear direction along the forming portion of the receiving port 11B with respect to the above-mentioned base 11. Specifically, the above-mentioned piece 14 is arranged so as to be sandwiched between the respective base plates 11A constituting the above-mentioned base 11, similarly to the above-mentioned hook 12 and pole 13. More specifically, the above-mentioned piece 14 has a receiving port of the base plate 11A in a guide groove 14B formed in a straight recessed shape in the front-rear direction on a surface facing the base plate 11A on one side thereof. The guide pin 11D protruding from the front side of the 11B is fitted and set in a guided state so that it can only slide in the front-rear direction (see FIGS. 5 to 6). With the above configuration, the piece 14 is guided with respect to the base 11 so that the guide groove 14B described above can slide only in the front-rear direction in which the guide pin 11D is slidable. There is.

As shown in FIG. 2, the above-mentioned piece 14 is always moved in the direction of projecting from the front side to the rear side in the receiving port 11B by the compression spring 14A hooked between the above-mentioned piece 14 and the above-mentioned base 11. It is said to be in a state of momentum. The compression spring 14A described above is an eaves piece 11C formed by being bent in the seat width direction from the front edge portion of the piece 14 described above and the front edge portion of the receiving port 11B of the base plate 11A on one side described above. It is hung between and. With the above configuration, as shown in FIG. 2, in the initial state before the striker S enters the reception port 11B, the piece 14 does not project to the rear opening end of the reception port 11B due to the above-mentioned urging force. However, it is maintained in a state of protruding from the front side to the rear side to an intermediate position in the receiving port 11B.

Then, as shown in FIGS. 4 and 11, the above-mentioned piece 14 moves toward the front inside the reception 11B in the form of being pushed by the striker S by the movement of the above-mentioned striker S entering the reception 11B. It is designed to be pushed. Then, the piece 14 is pushed by the striker S to each position shown in FIGS. 4 and 11 described above, and as shown in FIGS. 5 and 12, the lever 15 described later is allowed to be pulled by urging. It is supposed to be in a state of doing. Then, the piece 14 is held in a state of being engaged with the lever 15 and being position-constrained by the pulling movement of the lever 15 accompanying the tolerance. Then, with the operation of the lever 15, the hook 12 whose attitude control via the release link 16 described later is released is switched to the closed state, and the striker S is moved to the receiving port 11B by the hook portion 12B of the hook 12. It is designed to be locked in a state of being trapped inside.

Here, as shown in FIGS. 2 to 3, the above-mentioned striker S is formed of a round bar material bent so as to project from the above-mentioned deck side panel DS in a substantially U-shape in a plan view. The striker S described above has a configuration in which the front leg portion of the U-shape is used as the first arm S1 and is inserted into the above-mentioned receiving port 11B in advance, and the rear leg portion is used as the second arm S2. It is configured to be inserted into the receiving port 11B after the first arm S1 described above.

With respect to the striker S having the above configuration, as shown in FIGS. 4 to 5, the above-mentioned piece 14 has a hook 12 hook in a space portion between the first arm S1 of the above-mentioned striker S and the second arm S2. By pushing the portion 12B into the receiving port 11B to a position where the portion 12B can be inserted, a recess 14C is formed so that the convex piece 15B formed on the lever 15 described above can be received from the lateral side (upper side) in the traveling direction. It is said that it has a structure. Further, as shown in FIGS. 11 to 12, the above-mentioned piece 14 is inside the receiving port 11B until the above-mentioned striker S can insert the hook portion 12B of the hook 12 into the space portion on the rear side of the second arm S2. The chamfered portion 14D is formed so that the convex piece 15B formed on the lever 15 described above can be received from the lateral side (upper side) in the traveling direction by being pushed into the lever 15. Here, the recess 14C and the chamfered portion 14D described above correspond to the “dent” of the present invention, respectively, and the convex piece 15B corresponds to the “convex” of the present invention.

The recess 14C described above has an arc shape that matches the curved shape of the convex piece 15B protruding downward from the lever 15 described above at the intermediate portion in the front-rear direction of the upper side surface of the piece 14 described above. It is formed in a curved concave shape. Further, the chamfered portion 14D is formed in a chamfered shape curved in an arc shape in the corner portion on the rear side of the upper side surface of the piece 14 described above in accordance with the curved shape of the convex piece 15B of the lever 15 described above. Has been done.

In the above-mentioned piece 14, as shown in FIGS. 4 to 5, the first arm S1 of the above-mentioned striker S enters the receiving port 11B, and the convex piece 15B of the lever 15 enters the inside of the recess 14C by urging. The position in which the lever 15 is pressed is the first-stage lock position in which the hook 12 can be switched to the closed state by the moving of the lever 15 and the striker S can be locked in the state of being confined in the receiving port 11B. There is. Further, in the above-mentioned piece 14, as shown in FIGS. 11 to 12, the above-mentioned striker S enters the receiving port 11B further than the lock position of the first stage, and the convex piece 15B of the lever 15 enters the chamfered portion 14D. The position where the lever 15 can be pushed in is the second stage in which the hook 12 can be switched to the closed state by the moving movement of the lever 15 and the striker S can be locked in the receiving port 11B. It is in the locked position. The lock position of the second stage is a position where the first arm S1 of the striker S substantially abuts on the front side surface which is the bottom side surface in the receiving port 11B.

The piece 14 described above is restrained by the lever 15 described later being released as shown in FIGS. 9 and 13 from the state in which the striker S described above in FIGS. 5 and 12 is locked at the respective lock positions. By being moved to open the state, the hook 12 is switched to the open state in conjunction with this movement, and the striker S is moved to the outside (rear) of the receiving port 11B by the urging force of the compression spring 14A. It is designed to be pushed toward (see FIG. 10). By this pushing force, the seat lock device 10 (seat back 2) is pushed out from the striker S so as to be bounced forward. The position where the seat lock device 10 described above is pushed out with respect to the striker S is a position where the striker S is pushed out to a position where the piece 14 takes the initial state shown in FIG. In this position, the convex piece 15B of the lever 15 cannot enter the recess 14C of the piece 14 or the chamfered portion 14D, so that the hook 12 does not close and the striker S relocks at that position. There is no risk of being chamfered.

<About lever 15>
As shown in FIGS. 2 to 3, the lever 15 is provided by being rotatably hinged and connected by a support shaft 15A at a position above the receiving port 11B of the base 11 described above. Specifically, the lever 15 described above is arranged so as to be sandwiched between the base plates 11A constituting the base 11 described above, similarly to the hook 12 and the pole 13 described above. Then, the support shaft 15A is inserted through the lever 15 in the plate thickness direction, and both ends of the support shaft 15A are inserted into the base plate 11A on each side through the plate thickness direction and crimped. As a result, the lever 15 is rotatably hinged to the base 11. The lever 15 described above has a shape having an extension portion 15D that extends the shape from the set position of the support shaft 15A, which is the center of rotation, to the front side.

The extension portion 15D is a guide that inflates the outer peripheral surface in a stepped manner toward the lower side, which is the outer side in the radial direction, at the outer peripheral portion on the front lower side of the support shaft 15A near the set position of the support shaft 15A. Part 15C is formed. Further, a convex piece 15B is formed at an intermediate portion in the middle of extending to the front side of the extending portion 15D so as to project in a shape curved in an arc shape toward the rear lower side. The convex piece 15B has a shape that projects in a curved shape in an arc shape drawn around a support shaft 15A, which is the center of rotation of the lever 15.

The lever 15 described above is always in a state of being rotationally urged in the counterclockwise direction shown around the support shaft 15A by a spring (not shown) hooked between the lever 15 and the base 11 described above. With the above configuration, as shown in FIG. 2, the lever 15 is attached to the upper side surface of the piece 14 which is held as a protruding state in the receiving port 11B in the initial state before the striker S enters the receiving port 11B. The guide portion 15C described above is held in a pressed state.

In the lever 15 described above, when the striker S described above enters the receiving port 11B, even if the piece 14 described above is pushed forward by the striker S to a certain position, the guide portion 15C described above is on the upper side of the piece 14. By sliding on the side surface, the rotation position is held in a fixed state. However, as shown in FIG. 4, when the above-mentioned piece 14 is pushed to the above-mentioned first-stage lock position by the above-mentioned entry of the striker S, the above-mentioned guide portion 15C becomes a piece. The state of contact with the upper side surface of the piece 14 is removed, and the state of rotation restriction due to contact with the piece 14 is released. As a result, as shown in FIG. 5, the lever 15 is rotated in the counterclockwise direction shown by the above-mentioned urging force, and the convex piece 15B is fitted into the recess 14C of the piece 14 to be fitted. ..

By the above fitting, the lever 15 moves and urges the piece 14 to the rear side by the above-mentioned compression spring 14A, and the convex piece 15B that has entered the recess 14C of the piece 14 becomes the inner peripheral surface of the recess 14C. On the other hand, the arcuate surfaces are brought into surface contact with each other and are held in a state of being restrained at a fixed position. Further, as shown in FIG. 9, the lever 15 described above is released by the release operation of the operation knob H described above in FIG. 1, and the convex piece 15B described above is recessed in the piece 14. It is operated so as to be removed from the inside of 14C. As a result, the movement restraint state of the piece 14 by the lever 15 is released, and the piece 14 is switched to a state in which the striker S can be pushed out (rearward) by the urging force of the compression spring 14A.

Further, when the movement restraint state of the piece 14 by the lever 15 is released, the piece 14 is in a state where the striker S described above can be further deeply inserted into the receiving port 11B. Therefore, from this state, by further deeply inserting the striker S described above into the receiving port 11B, the piece 14 can be pushed all the way to the lock position of the second stage described above, as shown in FIG. .. As a result, the lever 15 described above is rotated in the counterclockwise direction shown in the drawing by urging, and the convex piece 15B is inserted into the chamfered portion 14D of the piece 14 to bring the arc surfaces into surface contact with each other. The movement of the piece 14 to the rear side due to the urging is restrained.

When the convex piece 15B of the lever 15 enters the chamfered portion 14D of the piece 14, the small protrusion 15E protruding slightly downward from the outer peripheral portion on the front side of the convex piece 15B of the lever 15 is the upper side surface of the piece 14. It is regulated at the position where it comes into contact with. As described above, the lever 15 can be engaged with the piece 14 in a state of being releasably held at two positions in the receiving direction of the striker S.

<About Release Link 16>
As shown in FIGS. 2 to 3, the release link 16 is composed of a single link member extending straight in the vertical direction. The release link 16 described above extends from the setting position of the support shaft 13A of the pole 13 to the front side and the extension portion 13C extending to the front side from the setting position of the support shaft 12A of the hook 12 described above to the front side. The extension portion 12D and the extension portion 15D extending forward from the set position of the support shaft 15A of the lever 15 described above are provided by the connecting shafts 13D, 12E, and 15F in the link length direction of the release link 16, respectively. It is rotatably hinged at three positions.

Of these, the connecting shaft 13D that hinges the pole 13 to the release link 16 is inserted into the elongated hole 16A formed through the release link 16 in the plate thickness direction and extending straight in the link length direction. It is connected so that it can slide in the elongated hole 16A in the link length direction. Further, the connecting shaft 15F that hinges the lever 15 to the release link 16 is also inserted into the elongated hole 16B formed through the release link 16 in the plate thickness direction and extending straight in the link length direction to have the same length. The holes 16B are connected so that they can slide in the link length direction. Here, the structure that allows the sliding of the connecting shafts 13D and 15F by the elongated holes 16A and 16B described above corresponds to the "relief structure" in the present invention, respectively.

In the release link 16 described above, a portion extending upward thereof is connected to the operation knob H described above in FIG. 1, and as described above in FIGS. 5 and 12, the striker S serves as a reception port 11B. The lever 15 is pushed down by the movement of entering the inside and being turned downward. Further, as shown in FIGS. 9 and 13, the release link 16 described above is pulled upward by the operation of pulling the operation knob H (see FIG. 1) upward by the operator, and the lever 15 is pulled upward. It is designed to be operated to pull up.

As shown in FIG. 2, the release link 16 having the above configuration has the guide portion 15C of the lever 15 described above riding on the upper side surface of the piece 14 in the initial state before the striker S enters the receiving port 11B. Due to the action of being held as a state, the operation knob H is pulled upward and held as an operating state. Then, from the above initial state, as shown in FIGS. 5 and 12, the striker S enters each lock position in the receiving port 11B, and the lever 15 is turned downward to be pushed down. Then, the operation knob H is switched to the state of being pushed down. Then, as shown in FIGS. 9 and 13, the release link 16 is operated by the user to pull the operation knob H upward from the depressed operation state, so that the operation knob H is used. It is pulled upward so as to pull the lever 15 upward from the engaged state with the piece 14.

Specifically, as shown in FIG. 2, the release link 16 described above has the hook 12 closed by a spring (not shown) in the closing direction (counterclockwise direction shown) in the initial state before the striker S enters the receiving port 11B. Due to the action of the urging force, the lever 15 rides on the upper side surface of the piece 14 and is held in position while receiving the force of being pushed downward by the connecting shaft 12E which is the connecting point with the hook 12. By this action, the connecting shaft 15F, which is the connecting point with the lever 15, is held in a position where it is in contact with the upper end surface of the elongated hole 16B. Further, in the release link 16, the connecting shaft 13D, which is a connecting point with the pole 13, is formed in the elongated hole 16A by the action of a force in which the pole 13 is urged by a spring (not shown) in the same counterclockwise direction as the hook 12. It is in a state of holding the position of the pole 13 in the initial state by hitting the lower end surface.

Then, from the above state, as shown in FIGS. 5 and 12, the striker S enters each lock position in the receiving port 11B and the lever 15 is turned downward, so that the release link 16 is set to the initial stage. Similar to the state, even when the hook 12 is in the closed state, it is a connection point with the hook 12 by the action of a force urged in the closing direction (counterclockwise direction in the drawing) by a spring (not shown). It is a connection point with the lever 15 due to the action of the lever 15 being held in the recessed 14C of the piece 14 or the chamfered portion 14D while receiving the operating force pushed downward by the connecting shaft 12E. The connecting shaft 15F is held in a position where it is in contact with the upper end surface of the elongated hole 16B. On the other hand, the release link 16 is in a state in which the pole 13 is locked by inserting the engaging portion 13B into the stepped portion 12C of the hook 12 by a spring (not shown) and pressing it against the outer peripheral surface of the hook 12. The connecting shaft 13D, which is the connecting point with the pole 13, is positioned at the intermediate portion of the elongated hole 16A.

With the above configuration, as shown in FIG. 8, the release link 16 receives a strong force from the striker S confined inside the receiving port 11B toward the outside (rearward) to open the release link 16 (clockwise in the figure). ), And even if it is pushed upward by the connecting shaft 12E, which is the connecting point with the hook 12, the connecting shaft 13D, which is the connecting point with the pole 13, slides in the elongated hole 16A. By making the connection shaft 15F, which is the connection point with the lever 15, slide in the elongated hole 16B, the hook 12 can be released without being transmitted. The above is the specific configuration of each part of the seat lock device 10.

<About the flow of movement of the entire seat lock device 10>
Subsequently, the flow of movement of the entire seat lock device 10 described above will be described. That is, as shown in FIG. 2, the seat lock device 10 is on the upper side of the piece 14 in which the guide portion 15C of the lever 15 projects into the reception port 11B in the initial state before the striker S described above enters the reception port 11B. The release link 16 is held in a position where it is lifted upward by riding on the side surface of the. Along with this, the position of the hook 12 is held in the open state, and the position of the pole 13 is held in the state where the engaging portion 13B is removed from the stepped portion 12C of the hook 12. In this state, the operation knob H is pulled upward by the release link 16. The operation knob H is provided with a marker colored in red or yellow on the surface exposed to the outside when the operation knob H is pulled upward as described above, and the seat lock depends on the visible state of the marker. The user can visually recognize that the device 10 is in the unlocked state from the outside.

When the striker S is pushed into the receiving port 11B of the seat lock device 10 from the above initial state, as shown in FIG. 4, the piece 14 projecting into the receiving port 11B described above is moved to the back side of the receiving port 11B by the striker S. It is pushed to the front side). Then, when the striker S is pushed all the way to the first-stage lock position shown in FIG. 4, the guide portion 15C of the lever 15 comes out from the upper side surface of the piece 14 and is convex as shown in FIG. The piece 15B is rotated and engaged so as to be pushed into the recess 14C of the piece 14. As a result, the piece 14 is in a state of being position-constrained by the lever 15. Further, as the lever 15 rotates, the hook 12 is rotated by urging to be closed, and the pole 13 is engaged with the engaging portion 13B by inserting the engaging portion 13B into the step portion 12C of the hook 12. It becomes. As a result, the seat lock device 10 locks the striker S in the receiving port 11B.

When the seat lock device 10 is in the locked state, the operation knob H is pushed down with the push down of the release link 16 described above, and the marker described above is embedded in the seat back 2 and switched to a state invisible from the outside. Be done. As a result, the user can visually recognize from the outside that the seat lock device 10 has been switched to the locked state due to the state in which the above-mentioned marker cannot be seen.

From the above state, as shown in FIG. 9, when the operation knob H is pulled up, the release link 16 is pulled up, the lever 15 is disengaged from the engagement with the piece 14, and the hook 12 and the pole 13 are also pulled up. The pole 13 is removed from the stepped portion 12C of the hook 12 by being turned in the opposite direction to the previous one, and the hook 12 is opened. As a result, as shown in FIG. 10, the striker S that has entered the reception port 11B is pushed out by the piece 14 toward the outside (rear) of the reception port 11B. By this pushing force, the seat lock device 10 (seat back 2) is pushed out from the striker S so as to be bounced forward.

Further, as shown in FIG. 11, the seat lock device 10 substantially abuts the striker S on the front side surface which is the bottom side surface of the receiving port 11B by holding the operation knob H in the operated state in which it is pulled up. It can be pushed to the lock position of the stage. Then, after the above-mentioned pushing, by releasing the operation of the operation knob H, as shown in FIG. 12, the lever 15 engages with the piece 14 in the same manner as before, and the piece 14 is in a position-constrained state and the hook. 12 is closed by urging and the striker S is locked in the receiving port 11B. Then, from the above state, as shown in FIG. 13, when the operation knob H is pulled up, the release link 16 is pulled up in the same manner as before, and the lever 15 is disengaged from the engagement with the piece 14. The hook 12 and the pole 13 are also turned in the opposite direction to the previous one, the pole 13 is removed from the step portion 12C of the hook 12, and the hook 12 is opened. As a result, the striker S that has entered the reception port 11B is pushed out by the piece 14 toward the outside (rear) of the reception port 11B, as in the state shown in FIG. By this pushing force, the seat lock device 10 (seat back 2) is pushed out from the striker S so as to be bounced forward.

<Summary>
Summarizing the above, the seat lock device 10 of this embodiment has the following configuration. That is, it is a vehicle seat lock device (seat lock device 10) capable of receiving and locking the striker (striker S). This vehicle seat lock device (seat lock device 10) is formed by rotating a base (base 11) having an opening-shaped inlet (receiver 11B) capable of accepting a striker (striker S) and a base (base 11). A pole (hook 12) that locks the hook (hook 12) to the closed state by engaging the hook (hook 12) that switches the reception port (reception port 11B) between the closed state and the open state. The shape of the pole 13) and the base (base 11) is elastically projected into the entrance (reception 11B), and the striker (striker S) that has entered the reception (reception 11B) is exposed to the outside. It has an extrusion member (piece 14) that exerts a pushing force.

The center of rotation (support shaft 12A) of the hook (hook 12) with respect to the base (base 11) deviates from the extension line (extension line EL) of the entry movement path with respect to the entrance (reception port 11B) of the striker (striker S). It is set to the eccentric position (see FIG. 2). The extruded member (piece 14) is confined by the hook (hook 12) when the striker (striker S) enters the receiving port (receiving port 11B) and the hook (hook 12) is locked in a closed state. The pushed state (see FIGS. 5 and 12) held at the position where it is pushed by the striker (striker S), and the pushed state when the hook (hook 12) is unlocked in the closed state. It is configured to take a restored state (see FIG. 10) in which the striker (striker S) is pushed out from the position confined by the hook (hook 12) due to the repulsive force thereof.

In this way, the hook (hook 12) has its rotation center (support shaft 12A) set to the above-mentioned eccentric position, so that the striker (striker S) confined in the reception port (reception port 11B) can be moved to the outside. When the pushing force is applied, the load of the bending moment around the center of rotation (support shaft 12A) is easily applied (see FIG. 8). However, since the hook (hook 12) is locked in a closed state by engaging with the pole (pole 13), the striker (striker S) can be locked by appropriately receiving the above load. Therefore, by setting the extrusion member (piece 14) in such a configuration, the striker (striker S) can be locked with an appropriate strength by the hook (hook 12), and the hook (hook 12) is released. Sometimes the striker (striker S) can be pushed out by an extrusion member (piece 14) that functions independently of the hook (hook 12) so that it pops up appropriately to a position where it is difficult to relock.

Further, the extruded member (piece 14) hooks (hooks) the striker (striker S) by entering the striker (striker S) into the receiving port (receiving port 11B) so that the hook (hook 12) is closed. It is configured so that it is directly applied to and sandwiched between 12) (see FIGS. 5 and 12). With such a configuration, the striker (striker S) can be locked in a state of being appropriately pressed between the hook (hook 12) and the extrusion member (piece 14) without rattling.

Further, the vehicle seat lock device (seat lock device 10) is in a state of being elastically pressed against the extrusion member (piece 14) from the lateral side in the receiving direction of the striker (striker S). ) Is pushed by the striker (striker S) to the position where it is pushed in, so that the contact with the extrusion member (piece 14) is released by the dent and is elastically moved so as to be further attracted to the extrusion member (piece 14). It has a detection member (lever 15) (see FIGS. 5 and 12). With such a configuration, the movement of the detection member (lever 15) is used to easily detect a state in which the striker (striker S) enters the reception port (reception port 11B) and is locked. be able to.

Further, the detection member (lever 15) is pushed into the recess (recess 14C or chamfered portion 14D) formed between the extrusion member (piece 14) and the extrusion member (piece 14) by being pushed to the position where the extrusion member (piece 14) is pushed. The extruded member (piece 14) is pushed and moved so as to fit the convex (convex piece 15B), and the extruded member (piece 14) is held in the pushed state (see FIGS. 5 and 12). With such a configuration, the detection member (lever 15) can be rationally functioned as a member for holding the extrusion member (piece 14) in the pushed state.

Further, the vehicle seat lock device (seat lock device 10) is an interlocking mechanism (release link 16) that connects the detection member (lever 15), the hook (hook 12), and the pole (pole 13) so as to be interlocked with each other. Has. The interlocking mechanism (release link 16) is such that the extrusion member (piece 14) is pushed by the striker (striker S) to a position where it is pushed, and the detection member (lever 15) is further attracted to the extrusion member (piece 14). In conjunction with the movement, the hook (hook 12) is rotated from the open state to the closed state, and the pole (pole 13) is operated so as to engage with the hook (hook 12). (See FIGS. 5 and 12). With such a configuration, the hook (hook 12) is closed by the above-mentioned interlocking mechanism (release link 16) by simply pushing the striker (striker S) into the reception port (reception port 11B). Can be in a state and locked.

Further, the pushed-in state in which the extruded member (piece 14) is held in the pushed-in state by the striker (striker S) can be taken at two positions in the receiving direction of the striker (striker S). It is configured (see FIGS. 5 and 12). With such a configuration, a striker having two types of strikers having different depth shapes to enter the inlet (entrance 11B) (a striker having a first arm S1 and a second arm S2 having different entry depth positions). S) can be locked appropriately.

Further, when the interlocking mechanism (release link 16) locks the hook (hook 12) in a closed state by engaging with the pole (pole 13), the hook (hook 12) loads from the striker (striker S). It is configured to have a relief structure (long holes 16A, 16B) that allows the fine movement to escape so as not to be transmitted to the detection member (lever 15) and the pole (pole 13) even if the fine movement is made in the rotation direction that is opened by input. (See Fig. 8). With such a configuration, due to the relief structure (slave holes 16A, 16B), the hook (hook 12) in which the striker (striker S) is confined is slightly moved by the load input from the striker (striker S). However, since this fine movement is not transmitted to the detection member (lever 15) and the pole (pole 13) and is released, the locked state of the hook (hook 12) by the pole (pole 13) can be appropriately maintained.

<About other embodiments>
Although the embodiment of the present invention has been described above using one embodiment, the present invention can be implemented in various forms other than the above embodiment. For example, the vehicle seat lock device of the present invention may be applied as a seat lock device used for vehicles other than automobiles such as railroads, and other vehicles such as aircraft and ships. Further, the vehicle seat lock device is provided in a structure other than the seat such as the vehicle body, in addition to a structure provided in the seat to receive and lock the striker provided in another structure such as the vehicle body. It may be one that accepts and locks the striker provided on the seat.

Further, the vehicle seat lock device is configured as a so-called back lock device that locks the seat back to a structure other than the seat such as the vehicle body as shown in the above embodiment, and also includes a seat cushion. It may be configured as a so-called cushion lock device that locks a structure other than the seat such as a vehicle body. Further, the other seat structure may be locked to a structure other than the seat such as the vehicle body. Further, the vehicle seat lock device has two different depth shapes, in addition to the one that allows one striker to be locked in two stages at two different depth positions as shown in the above embodiment. It may function so that each of the strikers can be locked in one step. The vehicle seat lock device may be adapted to lock the striker at one or more positions in the receiving direction. Such a configuration is possible by reducing or increasing the number of places where the extruded member is held in the pushed state.

Further, the hook that can be switched between the closed state and the open state by rotating with respect to the base is not the one that is always urged in the closed state as shown in the above embodiment. , It may be configured to be urged in the open state, or it may be configured not to be urged in either direction. That is, when the hook is configured so that the detection member and the operation are interlocked with each other via an interlocking mechanism such as the release link shown in the above embodiment, the hook is closed according to the movement of the detection member. This is because the attitude can be controlled so that it can be switched to the open state. The hook does not necessarily have to be linked to the operation of the detection member, and may be switched between a closed state and an open state by a separate operation.

Further, the pole that locks the hook in the closed state by engaging with the hook is not only the one that engages with the outer peripheral portion near the rotation center of the hook, but also the portion far from the rotation center of the hook, specifically, the receiving port. In the area opposite to the side with the rotation center of the hook that sandwiches the hook, it engages with the outer peripheral part of the hook that extends beyond the inlet and extends to the same area from the rotation center. You may. The pole may engage and disengage from the hook by a motion other than rotation such as a linear motion.

Further, as shown in the above embodiment, a spring is attached to the extrusion member that elastically projects the shape into the inlet to the base and exerts a force to push the striker that has entered the inlet to the outside. In addition to the one to which elasticity is imparted, the one itself may be composed of an elastic material such as rubber. The structure for holding the extruded member at a position where it is pushed by the striker may be a member other than the detection member. Further, the extruded member itself is held in the state position pushed by the striker by another member other than the hook, and the extruded member is held in the state position pushed through the striker by the locking action of locking the hook in the closed state. It may be held in.

Further, the configuration in which the detection member is elastically moved so that the extrusion member is pushed to a position where the extrusion member is pushed by the striker so that the contact with the extrusion member is released by the dent and is further attracted to the extrusion member is described above. In addition to the configuration in which the extrusion member is provided with a recess for allowing contact with the detection member as shown in the embodiment, the detection member may be provided with a recess for allowing contact with the extrusion member. Similarly, the detection member is pushed to the position where the extruded member is pushed into the pushed state, and is pushed to the position where the extruded member is pushed into the recess formed between the detection member and the extruded member. The structure for holding may be a configuration in which the extrusion member is provided with a recess and the detection member is provided with a convex shape as shown in the above embodiment, or a configuration in which the extrusion member is provided with a protrusion and the detection member is provided with a recess.

In addition, when the hook is locked in the closed state by engaging with the pole, even if the hook moves slightly in the rotation direction in which the hook is opened by the load input from the striker, the fine movement is not transmitted to the detection member and the pole. As shown in the above-described embodiment, the relief structure for releasing to is provided with a release structure such as a long hole at each connecting portion between the release plate constituting the interlocking mechanism, the pole, and the detection member, as well as the release plate and the hook. A relief structure such as an elongated hole may be provided at the connecting portion of the above.

1 seat (vehicle seat)
2 Seat back 3 Seat cushion S Striker S1 1st arm S2 2nd arm 10 Seat lock device (seat lock device for vehicles)
11 Base 11A Base plate 11B Inlet 11C Eaves piece 11D Guide pin 12 Hook 12A Support shaft (center of rotation)
12B Hook part 12C Step part 12D Extension part 12E Connecting shaft 13 Pole 13A Support shaft 13B Engaging part 13C Extension part 13D Connecting shaft 14 pieces (extruded member)
14A compression spring 14B guide groove 14C dent (dent)
14D chamfered part (dent)
15 lever (detection member)
15A Support shaft 15B Convex piece (convex)
15C Guide part 15D Extension part 15E Small protrusion 15F Connecting shaft 16 Release link (interlocking mechanism)
16A long hole (relief structure)
16B long hole (relief structure)
EL extension line DS deck side panel H operation knob

Claims (6)

A vehicle seat lock device that can accept and lock strikers.
A base having an opening-shaped inlet that can accept the striker,
A hook that can be switched between a closed state and an open state by rotating with respect to the base.
A pole that locks the hook to the closed state by engaging with the hook,
It has an extrusion member that elastically projects a shape into the inlet to the base and exerts a force to push the striker that has entered the inlet to the outside.
The center of rotation of the hook with respect to the base is set at an eccentric position deviated from the extension of the movement path of the striker to the entrance, and the extrusion member is such that the striker enters the inlet. When the hook is locked in the closed state, the hook is held in a position where it is pushed by the striker confined by the hook, and the lock of the hook in the closed state is released. By doing so, the striker is restored from the pushed state and the striker is pushed out from the position confined by the hook by the repulsive force .
The vehicle seat lock device is further elastically pressed against the extrusion member from the lateral side in the receiving direction of the striker, and the extrusion member is pushed by the striker to a position where it is in the pushed state. vehicle seat lock device that having a further detecting member to be moved elastically to be attracted to the pushing member is released by the recess contact between said pushing member by. The vehicle seat lock device according to claim 1.
For vehicles, the extruded member is configured such that the striker enters the receiving port and the hook is closed so that the striker is directly applied to the hook and sandwiched. Seat lock device. The vehicle seat lock device according to claim 1 or 2.
When the detection member is pushed to a position where the extrusion member is in the pushed state, the detection member is pushed and moved so as to fit a convex shape into the recess formed between the detection member and the extrusion member, and the extrusion member is pushed. configuration and which do that vehicle seat lock device for holding the state and a position. A vehicle seat lock device as claimed in any one of claims 3,
Further, it has an interlocking mechanism for connecting the detection member, the hook, and the pole so as to be interlocked with each other.
The interlocking mechanism is linked to an operation in which the extrusion member is pushed by the striker to a position where it is in the pushed state and the detection member is moved so as to be further attracted to the extrusion member, and the hook is opened. It is rotated to the closed state from the configuration and has been that the seat locking device for a vehicle which Ru is operated to the pole engaged with said hook. A vehicle seat lock device as claimed in any of claims 4,
The extrusion member, wherein the depressed state to be held in a position to be pushed in by the striker, said vehicle seat lock that is a can Ru configuration of taking each in two positions in the receiving direction of the striker apparatus. The vehicle seat lock device according to claim 4 .
In a state where the interlocking mechanism locks the hook to the closed state by engaging with the pole, even if the hook slightly moves in the rotational direction in which the hook is opened by a load input from the striker, the fine movement It said sensing member and constituting a has been that the seat locking vehicle equipment that have a relief structure escape so as not to transmit to said Paul.

Images