JP2014166819A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat of a type which can be set as a dive-down state or a tumble state and in which rattling during the normal setting state can be prevented adequately.SOLUTION: In a vehicular seat S1 in which a seat cushion 1 and a seat back 2 can be set as a dive-down state or a tumble state to the front side from the normal setting state and plural lock mechanisms 4 for fixing the rear side lower part of the seat cushion 1 are provided with a space in the vehicular width direction, comparing at least one lock mechanism 4A among the plural lock mechanisms 4 (4A, 4B) and other lock mechanism 4B, positions P1, P2 at which a shaft-like part 40a of a striker 40 is engaged and held by a lock mechanism body part 41 are position-deviated to each other in the height direction.

Description

  The present invention enables the seat cushion and the seat back to be set to dive down (sink down) or tumble from the normal installation state to the front side for the purpose of securing luggage space in a vehicle such as an automobile. Relates to a vehicle seat.

As an example of the vehicle seat, there is a vehicle seat Se as shown in FIG. 5 (see, for example, Patent Document 1).
In the vehicle seat Se shown in the figure, one end of a rotary arm 30e is connected to the front lower portion of the seat cushion 1, and the seat cushion 1 is rotated by using the rotary arm 30e. 1 and the seat back 2 can be set in a dive-down state as indicated by phantom lines in FIG. A striker 40 protrudes from the rear lower portion of the seat cushion 1, and when the vehicle seat Se is set in a normal installation state, the shaft-like portion 40a on the lower end side of the striker 40 is placed on the floor F1 of the vehicle. The lock mechanism main body 41 provided can be latched and held. By this locking and holding, the rear side of the seat cushion 1 can be fixed so as not to jump upward.

  However, the prior art still has room for improvement as described below.

That is, as shown in FIG. 5B, the lock mechanism 4 e in which the striker 40 and the lock mechanism main body 41 are combined is generally provided as a pair on both sides in the left-right width direction of the seat cushion 1. Conventionally, the pair of left and right strikers 40 are formed in the same shape and size, and when these shaft-like portions 40a are locked and held by the lock mechanism main body portion 41, the pair of shaft-like portions 40a are: The actual situation is that they are located at the same height (the same in the longitudinal direction of the vehicle), and these center lines CL are configured to coincide with each other.
However, according to such a configuration, the vehicle seat Se can easily rotate around the shaft-like portion 40a of the striker 40. For this reason, conventionally, for example, when a seated person leans against the seat back 2 and a load F acts on the seat back 2, the seat back 2 rotates so as to tilt backward about the shaft-like portion 40a of the striker 40. The front side of the seat cushion 1 is raised, and the entire vehicle seat Se is likely to be rattled. With this, the sitting comfort is poor.

JP 2009-40185 A

  The present invention has been conceived under the circumstances described above, and is a vehicle seat of a type that can be set in a dive-down state or a tumble state. An object of the present invention is to provide a vehicle seat that can be prevented.

  In order to solve the above problems, the present invention takes the following technical means.

  The vehicle seat provided by the present invention rotatably supports the front lower portion of the seat cushion so that the seat cushion and the seat back can be set in a dive-down state or a tumble state from the normal installation state to the front side. The rear lower part of the seat cushion is fixed so as to prevent the seat cushion from rotating around the front support part when the seat cushion and the seat back are set in a normal installation state. And a plurality of lock mechanisms provided at intervals in the vehicle width direction, each of the plurality of lock mechanisms being provided on one of the seat cushion and the vehicle floor. A striker, and a lock mechanism body provided on the other and capable of engaging and holding the shaft-like portion of the striker; The at least one lock mechanism of the plurality of lock mechanisms and another lock mechanism other than the lock mechanism include a shaft-like portion of the striker that is the lock mechanism main body. The position latched and held by the portion is configured to be shifted in the vertical height direction.

According to such a configuration, the following effects can be obtained.
In other words, when the seat cushion and the seat back are set in the normal installation state and the rear lower portion of the seat cushion is locked using a plurality of locking mechanisms, the plurality of locking mechanisms are configured such that the shaft portion of the striker is the locking mechanism main body. The position latched and held by the portion is shifted in the vertical height direction. Unlike the prior art, the present invention does not have a structure in which the center lines of the shaft-like portions of the plurality of strikers coincide with each other. Therefore, in the present invention, it is possible to prevent the seat cushion from easily rotating around the lock holding position of the shaft-like portion of the striker. As a result, for example, even when the seated person leans against the seat back, the seat back and the seat cushion are prevented from rotating so as to tilt backward about the shaft-like portion of the striker. It is possible to prevent rattling. For this reason, the sitting comfort of the vehicle seat is improved.
In the present invention, by changing the locking and holding positions of the plurality of strikers, as described above, the vehicle seat is prevented from rattling, and therefore the vehicle seat weight is appropriately increased and the cost is increased appropriately. Can be suppressed.

  Other features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

An example of the vehicle seat which concerns on this invention is shown, (a) is a side view, (b) is a rear view (right direction view of (a)). It is operation | movement explanatory drawing of the vehicle seat shown in FIG. It is a side view which shows the other example of this invention. It is a principal part rear view which shows the other example of this invention. An example of a prior art is shown, (a) is a side view, (b) is a principal part rear view.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.
In the following description, the same reference numerals as those shown in FIG. 5 are used as appropriate for the same or similar elements as those of the prior art shown in FIG.

  A vehicle seat S1 shown in FIG. 1 is a rear seat installed on a floor (rear floor) F1 of an automobile, and can be set and changed from a normal installation state shown in FIG. Specifically, the vehicle seat S1 includes a seat cushion 1, a seat back 2, a front support portion 3 for the seat cushion 1, and a pair of left and right lock mechanisms 4 (4A) provided at intervals in the vehicle width direction. , 4B).

  The seat cushion 1 includes a cushion pad 11 mounted on a seat cushion frame 10, and the seat cushion frame 10 includes an upper member 10a and a lower member 10b of slide rails for adjusting the front and rear position of the vehicle seat S1. Is provided. The seat back 2 is connected and supported to the rear portion of the seat cushion frame 10 via a support portion 10c or the like, and the standing angle thereof can be changed. Although details are omitted, the seat back 2 is also configured by using a frame and a pad in the same manner as the seat cushion 1.

  The front support portion 3 for the seat cushion 1 is configured to include a rotating arm 30, and the lower portion of the rotating arm 30 is located above the stepped portion 51 between the floor panel 50 and the passenger compartment floor F <b> 2 in front of the floor panel 50. An attached bracket 31 is connected via a shaft 32. This shaft 32 is a rotation fulcrum of the rotary arm 30. The upper part of the rotary arm 30 is connected to the front lower part of the seat cushion 1 (specifically, the lower member 10b of the seat slide rail) using a shaft 33. The rotating arm 30 rotates forward while supporting the seat cushion 1 when the seat cushion 1 is pushed forward in a state where the rear rear portion of the seat cushion 1 is not fixed by the lock mechanism 4. This makes it possible to dive down the seat cushion 1 together with the forward-turned seat back 2 onto the passenger compartment floor F2, as indicated by the phantom lines in FIG.

  Each locking mechanism 4 is for fixing the lower rear portion of the seat cushion 1 when the vehicle seat S1 is normally installed. The striker 40 and the lock mechanism main body 41 for the striker 40 are combined. It is configured. The striker 40 is fixedly attached to the seat cushion frame 10 so as to protrude downward from the lower rear portion of the seat cushion 1. The striker 40 has an inverted letter shape when viewed from the back, and a lower portion thereof is a substantially horizontal shaft-like portion 40a extending in the vehicle width direction. The lock mechanism main body 41 is fixed to the floor panel 50. The upward concave portion 41a into which the striker 40 can enter, and the shaft-like portion when the shaft-like portion 40a of the striker 40 enters the concave portion 41a. It has a locking claw 41b that locks and holds 40a in a retaining state. Such a locked holding state of the shaft-like portion 40a can be released by performing a predetermined operation.

  As clearly shown in FIG. 1B, the positions P1 and P2 where the shaft-like portion 40a of the striker 40 of the pair of lock mechanisms 4A and 4B is locked and held by the lock mechanism main body 41 are in the vertical height. The position is shifted by an appropriate dimension L in the direction. As means for this purpose, the size of the striker 40 is different between the pair of lock mechanisms 4A and 4B. Of course, when the seat cushion 1 is lowered from the position shown by the solid line in FIG. 2, the shaft-like portion 40a can be appropriately locked and held by the lock mechanism main body portion 41 in any of the pair of lock mechanisms 4A and 4B. Is set to

  Next, the operation of the vehicle seat S1 described above will be described.

First, when the vehicle seat S1 is set in the normal installation state and the rear lower portion of the seat cushion 1 is fixed using the pair of left and right locking mechanisms 4A and 4B, as described above, the pair of strikers 40 The positions P1 and P2 at which the shaft-like portion 40a is locked and held by the lock mechanism main body portion 41 are shifted in the vertical height direction. For this reason, the seat cushion 1 is difficult to rotate around the locking and holding positions P1, P2 of the shaft-like portion 40a of the striker 40. As a result, for example, even when the seated person leans against the seat back 2 and the load F is applied, the seat back 2 and the seat cushion 1 are rearward with respect to the locking holding positions P1 and P2 of the shaft-like portion 40a. Therefore, it is appropriately prevented from rotating so as to be inclined. If the seat cushion 1 is easily tilted backward, this action extends to the seat cushion 1 and the front side of the seat cushion 1 is rattled in the vertical direction. This is also prevented appropriately. .
Therefore, the sitting comfort of the vehicle seat S1 is improved.

  In the present embodiment, since the latch holding positions P1, P2 of the pair of strikers 40 are made different to prevent the vehicle seat S1 from rattling, the configuration is simple. It is possible to appropriately suppress an increase in weight and cost of the vehicle seat S1.

  3 and 4 show another embodiment of the present invention (elements that are the same as or similar to those in the previous embodiment are given the same reference numerals as in the previous embodiment).

  In the vehicle seat S <b> 2 shown in FIG. 3, the striker 40 of the lock mechanism 4 is attached to the floor F <b> 1 side of the vehicle, and the lock mechanism main body 41 is attached to the rear lower part of the seat cushion 1. As will be understood from the present embodiment, in the present invention, the striker 40 is provided in one of the two parts of the rear lower portion of the seat cushion 1 and the vehicle floor F1, and the lock mechanism main body is provided in the other. 41 should just be provided.

The vehicle seat S3 of the embodiment shown in FIG. 4 is a bench seat type in which the seat cushion 1 and the seat back 2 are long in the vehicle width direction. In this type of vehicle seat S3, it is desirable to provide, for example, three or four lock mechanisms 4 in order to increase the fixing strength of the vehicle seat S3. In such a case, for example, the striker 40 is locked between the two lock mechanisms 4A closer to the outer side in the vehicle width direction and one or two (two in the drawing) lock mechanisms 4B closer to the inner side in the vehicle width direction. A means for making the holding positions P1, P2 different in height by an appropriate dimension L may be employed.
In the present invention, when three or more lock mechanisms are provided, all of the three or more lock mechanisms may have different striker holding positions. However, the present invention is not limited to this. It is sufficient that at least one of the lock mechanisms is different from the other lock mechanisms in the striker holding position.

  The present invention is not limited to the contents of the above-described embodiment. The specific configuration of each part of the vehicle seat according to the present invention can be variously modified within the range intended by the present invention.

  In the above-described embodiment, the type in which the seat cushion and the seat back can be set in the dive-down state has been described. However, the present invention is not limited to this type, and can be applied to a type that can be set in the tumble state. . Here, the tumble state is a state in which the seat cushion is rotated up around the front support portion as described in, for example, JP-A-2006-213203. The standing state is a state of being overlaid on the seat cushion.

  In the present invention, as means for differentiating the positions at which the shaft-like portions of the plurality of strikers are locked and held, instead of making the sizes of the plurality of strikers different, for example, the same size of the strikers is used. You may employ | adopt the means of providing a height difference (step) in an attachment location.

S1 to S3 Vehicle seat F1 floor (vehicle floor)
P1, P2 Striker shaft-like portion locked position 1 Seat cushion 2 Seat back 3 Front support portion 4 (4A, 4B) Lock mechanism 40 Strike 40a Shaft-like portion (of striker)
41 Lock mechanism body

Claims (1)

A front support portion that rotatably supports a front lower portion of the seat cushion so that the seat cushion and the seat back can be set to a dive down state or a tumble state from the normal installation state to the front side;
The rear lower portion of the seat cushion can be fixed so as to prevent the seat cushion from rotating about the front support portion when the seat cushion and the seat back are set in a normal installation state, and the vehicle A plurality of locking mechanisms provided at intervals in the width direction;
With
Each of the plurality of lock mechanisms includes a striker provided on one of the seat cushion and a vehicle floor, and a lock mechanism main body provided on the other and capable of engaging and holding the shaft-like portion of the striker. A vehicle seat comprising:
Among the plurality of lock mechanisms, at least one lock mechanism and another lock mechanism different from this, the position where the shaft-like portion of the striker is locked and held by the lock mechanism main body portion is vertically high and low. A vehicle seat characterized in that it is configured to be displaced in the vertical direction.

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