JP3652110B2 - Vehicle seat locking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat locking device that locks a seat that moves forward and backward in the vehicle length direction and that is slidable forward from a most advanced locking position at an arbitrary position behind the most advanced locking position.
[0002]
[Prior art]
In recent years, passenger cars having a variety of demands have been demanded. For example, there is a demand for securing a large luggage space continuous from the luggage compartment in the passenger compartment as necessary. For this reason, the flat surface which continues from a front seat to a rear seat is comprised. Specifically, the front seat back constituting the front seat is tilted backward, the front seat back is brought into contact with the front end portion of the rear seat cushion constituting the rear seat, and the rear seat cushion The structure arrange | positioned on the substantially the same surface as the upper surface part of is employ | adopted.
[0003]
In this case, as described above, in order to form a flat surface continuous from the front seat to the rear seat, it is necessary to slide the front seat cushion forward from the most advanced locking position. That is, as shown in FIG. 9, when the front seat back 4 is tilted while the front seat cushion 3 is moved to the most advanced lock position 2 of the front seat 1, The part 7 which interferes with the front-end | tip part of the rear seat cushion 6 of the rear seat 5 will generate | occur | produce.
[0004]
Therefore, as shown in FIG. 10, a contrivance is provided in which the slide portion 8 is provided over a predetermined distance H forward (in the direction of the arrow X) from the most advanced lock position 2. For this reason, the front seat 1 slides forward from the foremost lock position 2 along the slide portion 8, and the front seat back 4 and the front seat cushion 6 are brought into contact with each other so as to be substantially flush with each other. Can be arranged.
[0005]
[Problems to be solved by the invention]
By the way, a locking device for locking the front seat 1 to a predetermined locking position is normally pressed by a spring and is movable together with the front seat 1 and a plurality of lock members provided on the lock rail. And a lock hole. The front seat 1 is locked and unlocked by rotating the lock member via the operation lever.
[0006]
However, when the front seat 1 is returned from the flat posture shown in FIG. 10 to the seated posture, the front seat 1 is often slid rearward at a higher speed than the normal front and rear fine adjustment. For this reason, a problem has been pointed out that a so-called “lock tooth skipping” in which the lock member passes through a desired contact position and locks at a shifted position is caused. As a result, the operability when the seat is slid is deteriorated, and the lock member and the contact portion are easily damaged.
[0007]
The present invention solves this type of problem, and provides a vehicle seat locking device capable of quickly and surely locking a seat at a desired locking position and sliding the seat at a high speed. For the purpose.
[0008]
[Means for Solving the Problems]
In the vehicle seat locking device according to the present invention, when the seat is once moved forward from the most advanced locking position and then slid rearward, a plate-shaped guide provided forward from the most advanced locking position. The lock member slides along the contact surface of the member.
[0009]
Here, the contact surface of the guide member is provided on the side surface of the fixed guide member so as to protrude toward the lock member, and pressure is applied to the lock member in the unlocking direction. Therefore, when the lock member is detached from the contact surface, the lock member is elastically displaced in the lock direction, and the lock member can be reliably locked at the most advanced lock position under the guide action of the contact surface. . Thereby, the locking speed by the locking member is improved at once, and the locking member can be easily and reliably locked at a desired locking position. In addition, the configuration of the entire lock device can be effectively simplified.
[0010]
Also, it corresponds to the distance that the locking member that slides on the contact surface moves from the rear end portion to the most advanced locking position between the rear end portion on the most advanced locking position side of the contact surface and the most advanced locking position. The interval is provided. Therefore, even when the seat is slid at a high speed, it is possible to prevent the lock member from jumping over the most advanced lock position and to lock the lock member more securely with respect to the most advanced lock position. become.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic perspective explanatory view of a vehicle body 12 provided with a locking device 10 according to a first embodiment of the present invention.
[0012]
A front seat 16 and a rear seat 18 are disposed in the vehicle compartment 14 of the vehicle body 12 in the vehicle length direction (arrow A direction). As shown in FIGS. 1 and 2, the front seat 16 provided on the passenger seat side is at least freely retractable with a seating front seat cushion 20 that is slidable in the vehicle length direction (arrow A direction). The front seat back 22 for backrest and the headrest 24 which can be attached or detached to the upper part of this front seat back 22 are provided, and the locking device 10 which concerns on 1st Embodiment is mounted | worn with this front seat 16.
[0013]
As shown in FIGS. 3 and 4, the locking device 10 includes a fixed-side rail member 28 fixed to the floor surface 26 of the vehicle body 12, a movable-side rail member 30 fixed to the lower surface of the front seat cushion 20, A lock member 32 for integrally locking the movable rail member 30 and the fixed rail member 28 to prevent the movement of the front seat 16, and a front side of the frontmost lock position P of the front seat 16 ( A plate-like guide member 36 provided in the direction of the arrow A1 and projecting toward the lock member 32 and having a contact surface 34 for guiding the lock member 32 to the most advanced lock position P after sliding the lock member 32; Is provided.
[0014]
As shown in FIG. 3, the fixed-side rail member 28 is formed with a plurality of lock holes 38 spaced apart from the foremost lock position P in the vehicle length direction rearward (arrow A2 direction) by a predetermined interval. A guide member 36 is fixed in front of the most advanced locking position P of the rail member 28. The guide member 36 is made of a material having wear resistance at least on the contact surface 34 so that the lock member 32 slides.
[0015]
The rod member 40 is rotatably locked along the movable rail member 30, and the lock member 32 is fixed to one end side of the rod member 40. The lock member 32 is provided with a plurality of lock teeth 44 that are inserted into arbitrary lock holes 38 formed in the fixed rail member 28 through the window 42 of the movable rail member 30. The lock member 32 is always pushed in the lock direction (arrow B direction) via a pair of springs 46. The other end side of the rod member 40 is bent by approximately 90 °, and an operation lever 48 is provided at the tip.
[0016]
As shown in FIG. 4, the reclining device 50 is attached to the front seat cushion 20 and the front seat back 22. The reclining device 50 includes a reclining knob 52 disposed on the side portion 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 mounted on the front seat cushion 20 and the front seat back 22.
[0017]
As shown in FIGS. 1 and 2, the rear seat 18 is detachably attached to a seating rear seat cushion 56, a backrest seat back 58 a, 58 b and an upper portion of the rear seat back 58 a, 58 b. Headrests 60a and 60b are provided. The rear seat backs 58a and 58b are configured to be reclinable as necessary.
[0018]
The operation of the locking device 10 according to the first embodiment configured as described above will be described below.
[0019]
First, in FIG. 2, after the headrest 24 constituting the front seat 16 is detached from the upper portion of the front seat back 22, the front seat cushion 20 is moved forward in the vehicle length direction (arrow A1 direction). 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 opposes the spring 46 via the rod member 40 and is opposite to the direction of arrow B. Swings in the direction of arrow D. For this reason, the lock teeth 44 of the lock member 32 are disengaged from the lock holes 38 of the fixed-side rail member 28, and the movable-side rail member 30 can advance and retract in the direction of arrow A with respect to the fixed-side rail member 28.
[0020]
Therefore, the front seat cushion 20 is moved in the arrow A1 direction, and the lock member 32 passes through the foremost lock position P of the fixed rail member 28 and is disposed on the contact surface 34 side of the guide member 36. When the operation of the operation lever 48 is released at this position, the lock member 32 swings in the direction of arrow B via the tension force of the spring 46, and the lock teeth 44 come into contact with the contact surface 34 of the guide member 36. (See FIG. 6A).
[0021]
In this state, the reclining knob 52 constituting the reclining device 50 is operated, and the front seat back 22 is tilted backward via the reclining adjuster 54. Then, as shown in FIG. 5, the front seat back 22 is locked at a position where it is in contact with the front end of the rear seat cushion 56 and disposed on the same plane as the upper surface of the rear seat cushion 56. The In addition, the rear seat back 58a can be reclined back as needed.
[0022]
Accordingly, the front seat cushion 20, the front seat back 22, and the rear seat cushion 56 are configured on substantially the same plane. Therefore, for example, a wide flat surface for a cargo bed can be obtained, and a relatively large load can be effectively loaded.
[0023]
Next, when the front seat 16 is returned from the flat configuration shown in FIG. 5 to the seating posture shown in FIG. 2, first, the reclining device 50 is operated to swing the front seat back 22 upward. . Further, the front seat cushion 20 is slid rearward in the vehicle length direction (arrow A2 direction).
[0024]
In this case, in the first embodiment, when the front seat cushion 20 is moved forward to form a flat surface with the front seat back 22, as shown in FIG. 6A, the front seat cushion 20 is attached to the movable rail member 30. The lock teeth 44 of the lock member 32 are further moved in the arrow A1 direction from the most advanced lock position P of the fixed-side rail member 28 and are in contact with the contact surface 34 of the guide member 36. Therefore, the lock member 32 is pushed in the direction of the arrow D (unlock direction) via the guide member 36, and this lock member 32 is compared with the case where it directly contacts the fixed-side rail member 28. The elastic force is acting greatly.
[0025]
Therefore, when the front seat cushion 20 is moved in the arrow A2 direction, the lock member 32 is moved in the arrow A2 direction integrally with the movable rail member 30 fixed to the front seat cushion 20, and the lock member 32 is moved. Is detached from the contact surface 34 of the guide member 36. At that time, a relatively large elastic force is applied to the lock member 32 via the spring 46 in the direction of arrow B, and the lock member 32 instantaneously moves toward the most advanced lock position P via the elastic force. (See FIG. 6B).
[0026]
In other words, the lock member 32 swings to the foremost lock position P quickly and reliably through the guide function of the contact surface 34 and the large elastic force of the spring 46 by detaching from the contact surface 34 of the guide member 36. Then, the lock teeth 44 are smoothly inserted into the lock holes 38. Therefore, especially when the front seat cushion 20 is slid in the direction of the arrow A2 at a relatively high speed, the lock member 32 does not jump over the desired lock hole 38, and the operability of the front seat 16 is improved. In addition, there is an effect that the front seat 16 can be reliably locked at a desired lock position.
[0027]
In addition, it is possible to effectively prevent damage caused by contact between the lock teeth 44 of the lock member 32 and the boundary portion of the lock hole 38 of the fixed-side rail member 28. Furthermore, the locking device 10 may be provided only with the plate-like guide member 36 substantially positioned in front of the most advanced locking position P of the fixed-side rail member 28. As a result, the configuration of the locking device 10 is simplified, and the manufacturing cost can be effectively reduced.
[0028]
FIG. 7 is an explanatory perspective view of a locking device 80 according to the second embodiment of the present invention. In addition, the same referential mark is attached | subjected to the component same as the locking device 10 which concerns on 1st Embodiment, and the detailed description is abbreviate | omitted.
[0029]
The locking device 80 includes a guide member 82 that is fixed to the front side of the most advanced locking position P of the fixed-side rail member 28. The guide member 82 is provided with a contact surface 84 for sliding the lock member 32, and between the rear end portion 86 of the contact surface 84 on the most advanced lock position P side and the most advanced lock position P. That is, the lock member 32 that slides on the contact surface 84 moves from the rear end portion 86 to the frontmost portion lock position P between the rear end portion 86 and the most distal end lock hole 38 in the arrow A1 direction. An interval H corresponding to the distance to be performed is provided (see FIGS. 7 and 8A).
[0030]
This interval H securely locks the lock member 32 at the most advanced lock position P when the front seat cushion 20 is slid in the direction of arrow A2 at a low speed and at a high speed. Set to the range to get.
[0031]
Here, if the distance H is too large, the lock teeth 44 of the lock member 32 may come into contact with the surface of the fixed rail member 28 and jump, or the surface of the fixed rail member 28 may slide during low-speed sliding. Tooth skipping may occur. 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 most advanced lock position P, particularly during high-speed sliding. Therefore, the interval H is specifically set within a range of 3 to 5 mm, whereby the lock member 32 can be locked at the foremost position P.
[0032]
Thereby, in 2nd Embodiment, only the predetermined space | interval H (within the range of 3-5 mm) is set between the rear-end part 86 of the contact surface 84, and the most advanced locking position P in the guide member 82. FIG. Whether the front seat cushion 20 is slid at a low speed in the arrow A2 direction or at a high speed, the lock member 32 is more securely locked to the most advanced lock position P. There is an effect that can be made. In addition, the same effects as those of the first embodiment can be obtained, such as the configuration of the locking device 80 being simplified.
[0033]
【The invention's effect】
In the vehicle seat locking device according to the present invention, when the seat is slid forward from the foremost lock position, the lock member is provided on the guide member and is disposed corresponding to the contact surface protruding toward the lock member. . For this reason, when the seat is moved backward from the most advanced locking position, the locking member is quickly and smoothly locked at the most advanced locking position via the contact surface guiding function and the large elastic force acting on the locking member. be able to.
[0034]
As a result, particularly when the seat is slid at high speed, the seat can be reliably locked at a desired lock position, and the configuration of the entire locking device is effectively simplified.
[Brief description of the drawings]
FIG. 1 is a schematic perspective explanatory view of a vehicle body in which a locking 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 locking device is applied.
FIG. 3 is an explanatory perspective view of the locking device.
FIG. 4 is a partial perspective view of a seat on which the lock device is mounted.
FIG. 5 is an explanatory side view of a state in which the sheet is configured in a flat shape.
FIG. 6A is an explanatory view showing a state in which the lock member is arranged on the guide member, and FIG. 6B is an explanatory view showing a state in which the lock member is arranged at the most advanced locking position from the guide member. is there.
FIG. 7 is a perspective explanatory view of a locking device according to a second embodiment of the present invention.
FIG. 8A is an explanatory view showing a state in which the lock member is arranged on the guide member, and FIG. 8B is an explanatory view showing a state in which the lock member is arranged at the most advanced lock position from the guide member. is there.
FIG. 9 is an explanatory diagram when a conventional sheet is made 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]
DESCRIPTION OF SYMBOLS 10,80 ... Locking device 12 ... Car body 16 ... Front seat seat 18 ... Rear seat seat 20 ... Front seat seat cushion 22 ... Front seat seat back 28 ... Fixed side rail member 30 ... Movable side rail member 32 ... Lock members 34, 84 ... Contact surfaces 36, 82 ... Guide member 38 ... Lock hole 40 ... Rod member 44 ... Lock tooth 46 ... Spring 48 ... Operating lever 50 ... Recliner 86 ... Rear end P ... Lead edge lock position

Claims (1)

A vehicle seat locking device that locks a seat that moves forward and backward in the vehicle length direction and that is slidable forward from the most advanced locking position to an arbitrary position behind the most advanced locking position,
A fixed-side rail member mounted on the vehicle body side;
A movable rail member mounted on the seat side;
A locking member for integrally locking the movable side rail member and the fixed side rail member to prevent movement of the seat;
A contact surface provided on a side surface of the fixed-side rail member so as to protrude forward from the most advanced locking position and toward the locking member side, and guides to the most advanced locking position after sliding the locking member. A plate-shaped guide member having;
Equipped with a,
The locking member that slides on the contact surface between the rear end portion of the contact surface of the plate-shaped guide member on the side of the front end lock position and the front end lock position has the front end lock from the rear end portion. locking device for a vehicle seat, characterized in that kick set the interval corresponding to the distance traveled to the position.

Images