JPH111138A - Vehicular seat locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lock a seat positively into a requested lock position and slide the seat at high speed. SOLUTION: A vehicular seat locking device 10 is provided with a fixed side rail member 28, a movable side rail member 30, a locking member 32 for integrally locking the movable side rail member 30 and fixed side rail member 28, and a guide member 36 provided frontward from a tip lock position P and protrusively on the locking member 32 side and having a contact face 34 for guiding the locking member 32 into the tip lock position P after sliding the locking member 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular seat lock for locking a seat which can be moved forward and backward in the vehicle length direction and is slidable forward from a frontmost lock position at an arbitrary position behind the frontmost lock position. Related to the device.

[0002]

2. Description of the Related Art In recent years, there has been a demand for diversified passenger cars. For example, there is a demand for securing a large luggage space continuous from a luggage compartment in a vehicle compartment as needed.
For this reason, a flat surface continuous from the front seat to the rear seat has been formed. Specifically, the front seat back that constitutes the front seat is tilted backward,
A structure is employed in which the front seat back is brought into contact with the front end of a rear seat cushion constituting a rear seat and is arranged substantially on the same plane as the upper surface of the rear seat cushion.

In this case, as described above, in order to form a flat surface that is continuous from the front seat to the rear seat, it is necessary to slide the front seat cushion forward from the frontmost locking position. That is, as shown in FIG. 9, the front seat back 4 is moved in a state where the front seat cushion 3 is moved to the frontmost locking position 2 of the front seat 1.
If the front seat back 4 is tilted backward, a portion 7 where the front seat back 4 interferes with the front end of the rear seat cushion 6 of the rear seat 5 is generated.

Therefore, as shown in FIG. 10, a method of providing the slide portion 8 for a predetermined distance H in front of the foremost lock position 2 (in the direction of arrow X) is adopted. For this reason, the front seat 1 slides forward from the foremost lock position 2 along the slide portion 8 so that the front seat back 4 and the front end of the rear seat cushion 6 are brought into contact with each other to be substantially flush with each other. Can be arranged.

[0005]

A locking device for locking the front seat 1 in a predetermined locking position is usually pushed by a spring and is movable integrally with the front seat 1. It has a member and a plurality of lock holes provided in the lock rail. And
The front seat 1 is locked and unlocked by rotating the lock member via the operation lever.

However, when returning the front seat 1 from the flat posture shown in FIG. 10 to the sitting posture, the front seat 1 is often slid rearward at a higher speed than the usual fine adjustment of front and rear. For this reason, a problem has been pointed out that a so-called “lock tooth jump” is caused, in which the lock member locks at a position shifted past a desired contact position. As a result, there is a problem that the operability when the seat is slid is deteriorated, and the lock member and the contact portion are easily damaged.

SUMMARY OF THE INVENTION The present invention solves this kind of problem, and a vehicle seat locking device capable of quickly and reliably locking a seat to a desired lock position and sliding the seat at a high speed. The purpose is to provide.

[0008]

SUMMARY OF THE INVENTION In a vehicle seat locking device according to the present invention, when a seat is once moved forward from a frontmost locking position and then slid backward,
The lock member slides along the contact surface of the guide member provided forward of the foremost lock position.

The contact surface of the guide member is provided so as to protrude toward the lock member, and the lock member has
Pressure is acting in the unlock direction. Therefore, when the lock member is detached from the contact surface, the lock member is elastically displaced in the lock direction, so that the lock member can be reliably locked at the most distal lock position under the guide action of the contact surface. . Thereby, the lock speed by the lock member is improved at a stroke, and the lock member can be easily and reliably locked at a desired lock position. In addition, the configuration of the entire lock device can be effectively simplified.

[0010] Further, between the rear end portion of the contact surface on the side of the frontmost lock position and the frontmost lock position, a lock member sliding on the contact surface moves from the rear end to the frontmost lock position. An interval corresponding to the distance is provided. For this reason, especially when the seat is slid at high speed, the lock member is prevented from jumping over the foremost lock position, and the lock member is moved with respect to the foremost lock position.
Locking can be performed more reliably.

[0011]

FIG. 1 is a schematic perspective explanatory view of a vehicle body 12 provided with a lock device 10 according to a first embodiment of the present invention.

A front seat 16 and a rear seat 18 are arranged in a vehicle compartment 14 of the vehicle body 12 in a vehicle length direction (direction of an arrow A). As shown in FIGS. 1 and 2, the front seat 16 provided on the passenger seat side is provided with a front seat cushion 20 for seating which is slidable in the vehicle length direction (the direction of arrow A).
A front seat back 22 for a backrest that can be tilted backward at least, and a detachable headrest 24 above the front seat back 22, and the front seat 16 includes a locking device 10 according to the first embodiment. Is attached.

As shown in FIGS. 3 and 4, the lock device 10 includes a fixed rail member 28 fixed to the floor 26 of the vehicle body 12 and a movable rail member fixed to the lower surface of the front seat cushion 20. 30 and the movable side rail member 3
And a lock member 3 for integrally locking the fixed side rail member 28 to prevent the front seat 16 from moving.
2, the front seat 16 is provided forward (in the direction of arrow A <b> 1) from the foremost lock position P of the front seat 16 and protrudes toward the lock member 32. After the lock member 32 is slid, the foremost lock position P And a plate-shaped guide member 36 having a contact surface 34 for guiding.

As shown in FIG. 3, a plurality of lock holes 38 are formed in the fixed side rail member 28 at predetermined intervals in the vehicle length direction rearward (in the direction of arrow A2) from the foremost lock position P. A guide member 36 is fixed to the front of the fixed side rail member 28 at a position forward of the foremost lock position P. For the guide member 36, at least the contact surface 34 is made of a material having wear resistance so that the lock member 32 slides.

A rod member 40 is rotatably locked along the movable rail member 30, and a lock member 32 is fixed to one end of the rod member 40. The lock member 32 passes through a window 42 of the movable side rail member 30 and has an arbitrary lock hole 38 formed in the fixed side rail member 28.
Are provided with a plurality of lock teeth 44. The lock member 32 is constantly pressed in the lock direction (the direction of arrow B) via a pair of springs 46. Rod member 4
The other end of 0 is bent at approximately 90 °, and an operation lever 48 is provided at the tip.

As shown in FIG. 4, a reclining device 50 is mounted on the front seat cushion 20 and the front seat back 22. The reclining device 50 includes a reclining knob 52 disposed on a side of the front seat cushion 20. A reclining adjuster 54 for adjusting the front seat back 22 to a predetermined tilting posture by operating the reclining knob 52 is attached to the front seat cushion 20 and the front seat back 22.

As shown in FIGS. 1 and 2, the rear seat 18 includes a rear seat cushion 56 for seating, rear seat backs 58a and 58b for a backrest, and upper portions of the rear seat backs 58a and 58b. It has detachable headrests 60a and 60b. Rear seat back 58a,
58b is configured to be reclined as needed.

The operation of the lock device 10 according to the first embodiment configured as described above will be described below.

First, in FIG. 2, after the headrest 24 constituting the front seat 16 is detached from the upper part of the front seat back 22, the front seat cushion 20 is moved forward in the vehicle length direction (direction of arrow A1). You. Specifically, as shown in FIGS. 3 and 4, when the operation lever 48 is swung in the direction of arrow C, the lock member 32 is opposed to the direction of arrow B against the spring 46 via the rod member 40. Arrow D
Rocks in the direction. Therefore, the lock teeth 44 of the lock member 32 are disengaged from the lock holes 38 of the fixed rail member 28, and the movable rail member 30 is
In the direction of arrow A.

Then, the front seat cushion 20 is moved in the direction of the arrow A1, and the lock member 32 passes through the foremost lock position P of the fixed side rail member 28 and the guide member 36.
Is disposed on the side of the contact surface 34. In this position, when the operation of the operation lever 48 is released, the lock member 32 swings in the direction of arrow B through the tensile force of the spring 46, and the lock teeth 44 contact the contact surface 34 of the guide member 36. (See FIG. 6A).

In this state, the reclining knob 52 of the reclining device 50 is operated, and the front seat back 22 tilts rearward through the reclining adjuster 54. Then, as shown in FIG. 5, the front seat back 22 is locked at a position where it comes into contact with the front end portion of the rear seat cushion 56 and is located substantially on the same plane as the upper surface portion of the rear seat cushion 56. You. The rear seat back 58a can be reclined rearward as needed.

As a result, the front seat cushion 20,
Front seat back 22 and rear seat cushion 56
Over the same plane. So, for example,
A wide flat surface for the carrier can be obtained, and relatively large loads can be effectively loaded.

Next, when returning the front seat 16 from the flat configuration shown in FIG. 5 to the sitting posture shown in FIG. 2, first, the reclining device 50 is operated to move the front seat back 22 upward. Rock it. Further, the front seat cushion 20 is moved rearward in the vehicle length direction (in the direction of arrow A2).
Slide toward.

In this case, in the first embodiment, the front seat cushion 20 moves forward and the front seat back 2
6A, the lock teeth 44 of the lock member 32 attached to the movable-side rail member 30 are further away from the foremost lock position P of the fixed-side rail member 28 in the direction of the arrow A1, as shown in FIG. 6A. To the guide member 36
Contact surface 34. Therefore, the lock member 32
Is pressed in the direction of arrow D (unlocking direction) via the guide member 36, and the elastic force of the spring 46 is larger than that of the lock member 32, which is in direct contact with the fixed rail member 28. doing.

When the front seat cushion 20 is moved in the direction of arrow A2, the front seat cushion 2
The lock member 32 moves in the direction of the arrow A2 integrally with the movable side rail member 30 fixed to
Is separated from the contact surface 34 of the guide member 36. that time,
A relatively large elastic force is applied to the lock member 32 in the direction of arrow B via a spring 46, and the lock member 32 instantly swings toward the foremost lock position P via the elastic force. (See FIG. 6B).

That is, when the lock member 32 is separated from the contact surface 34 of the guide member 36, the lock member 32 is quickly and surely secured via the guide function of the contact surface 34 and the large elastic force of the spring 46. The lock teeth 44 are smoothly inserted into the lock holes 38. Therefore, even when the front seat cushion 20 is slid relatively fast in the direction of arrow A2, the lock member 32 does not jump over the desired lock hole 38, and the operability of the front seat 16 is improved. With the front seat 1
6 can be reliably locked at a desired lock position.

Further, it is possible to effectively prevent the lock teeth 44 of the lock member 32 from contacting with the boundary portion of the lock hole 38 of the fixed side rail member 28 to cause damage or the like. Further, the lock device 10 only needs to provide the plate-shaped guide member 36 at a position substantially forward of the foremost lock position P of the fixed-side rail member 28. This allows
The configuration of the lock device 10 is simplified, and the manufacturing cost can be effectively reduced.

FIG. 7 is an explanatory perspective view of a lock device 80 according to a second embodiment of the present invention. Note that the same components as those of the lock device 10 according to the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

The lock device 80 is connected to the fixed rail member 28.
The guide member 82 is fixed to the front of the frontmost lock position P. The guide member 82 is provided with a contact surface 84 for sliding the lock member 32, and the rear end portion 8 of the contact surface 84 on the side of the foremost lock position P.
6, the lock member 32 that slides on the contact surface 84 between the rear end portion 86 and the lock hole 38 at the front end in the direction of the arrow A1. An interval H corresponding to the distance from the end portion 86 to the foremost portion locking position P is provided (FIGS. 7 and 8).
A).

This interval H is determined by the front seat cushion 20.
In both cases of sliding at a low speed and at a high speed in the direction of arrow A2, the lock member 32 is set to a range in which the lock member 32 can be securely locked at the foremost lock position P.

If the distance H is too large, the lock teeth 44 of the lock member 32 contact the surface of the fixed side rail member 28 and jump, or the surface of the fixed side rail member 28 is slid during low-speed sliding. Sliding may cause tooth skipping. On the other hand, if the interval H is too small, there is a possibility that the lock teeth 44 of the lock member 32 may jump over the foremost lock position P, especially during high-speed sliding.
Thus, the lock member 32 can be locked at the most distal position P by setting the interval H to be in a range of 3 to 5 mm.

Thus, in the second embodiment, a predetermined interval H (within a range of 3 to 5 mm) is set between the rear end portion 86 of the contact surface 84 and the foremost lock position P in the guide member 82. When the front seat cushion 20 is slid in the direction of the arrow A2 at a low speed or when the front seat cushion 20 is slid at a high speed, the locking member 32 is more easily moved with respect to the frontmost locking position P. There is an effect that the lock can be securely performed. In addition, the same effects as in the first embodiment can be obtained, such as the configuration of the lock device 80 being simplified.

[0033]

In the vehicle seat locking device according to the present invention, when the seat is slid forward from the most distal locking position, the locking member is provided on the guide member and corresponds to the contact surface protruding toward the locking member. Placed. For this reason, when the seat is moved rearward from the frontmost lock position, the lock member is quickly and smoothly locked to the frontmost lock position via the guide function of the contact surface and the large elastic force acting on the lock member. be able to.

Thus, even when the seat is slid at a high speed, the seat can be reliably locked at a desired lock position, and the configuration of the entire lock device is effectively simplified.

[Brief description of the drawings]

FIG. 1 is a schematic perspective explanatory view of a vehicle body in which a lock device according to a first embodiment of the present invention is incorporated.

FIG. 2 is an explanatory side view of a seat to which the lock device is applied.

FIG. 3 is an explanatory perspective view of the lock device.

FIG. 4 is a partial perspective explanatory view of a seat on which the lock device is mounted.

FIG. 5 is an explanatory side view of a state where the sheet is configured in a flat shape.

FIG. 6A is an explanatory view of a state in which a lock member is disposed on a guide member, and FIG. 6B is an explanatory view of a state in which the lock member is disposed at a most distal end lock position from the guide member. is there.

FIG. 7 is an explanatory perspective view of a lock device according to a second embodiment of the present invention.

FIG. 8A is an explanatory view of a state in which a lock member is disposed on a guide member, and FIG. 8B is an explanatory view of a state in which the lock member is disposed at a most distal end lock position from the guide member. is there.

FIG. 9 is an explanatory diagram when a conventional sheet is formed into a full flat shape.

FIG. 10 is an explanatory diagram of a state in which the conventional seat is configured to be further movable forward.

[Explanation of symbols]

10, 80 Locking device 12 Vehicle body 16 Front seat 18 Rear seat 20 Front seat cushion 22 Front seat back 28 Fixed rail member 30 Movable rail member 32 Lock member 34, 84 ... Contact surfaces 36, 82 ... Guide member 38 ... Lock hole 40 ... Rod member 44 ... Lock teeth 46 ... Spring 48 ... Operation lever 50 ... Reclining device 86 ... Rear end P ... Cutting edge lock position

Claims (2)

[Claims] 1. A vehicle seat locking device for locking a seat that moves forward and backward in a vehicle length direction and is slidable forward from a frontmost lock position at an arbitrary position behind the frontmost lock position. A fixed rail member mounted on the side, a movable rail member mounted on the seat side, and the movable rail member and the fixed rail member are integrally locked to prevent the movement of the seat. A guide member having a contact surface for projecting forward from the most distal lock position and toward the lock member, and having a contact surface for guiding the lock member to the most distal lock position after sliding the lock member. A lock device for a vehicle seat, comprising: 2. The locking device according to claim 1, wherein the lock member that slides on the contact surface is located between a rear end of the contact surface on the side of the foremost lock position and the foremost lock position. A locking device for a vehicle seat, wherein an interval corresponding to a distance from a rear end to the leading edge locking position is provided.