JPS59131306A - Seat apparatus for antomobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in vehicle seats.

2. Description of the Related Art Recently, multi-purpose vehicles such as wagons and cars that can effectively utilize the so-called interior space, in which seats can be converted into seating, luggage space, bed space, etc., have become popular. In order to achieve this purpose, conventional reclining devices have a pivot shaft in one place, so the sitting position can be changed to a bed state, but even if the seat back is folded forward, It was structurally impossible for the seat back to completely fold in two. For this reason, for example, an automobile seat device disclosed in Japanese Patent Publication No. 56-6888 was proposed. This device, as shown in FIG. An intermediate member 3 that is movably continuous and rotatably connected to the second bracket 2 at the other end, and this intermediate member 3 is connected to the first bracket 1.
a first fixing device 4 that fixes the second bracket 2 so as to be tiltable in the front-back direction relative to the intermediate member 3; a second fixing device 5 that fixes the second bracket 2 so as to be tiltable in the direction relative to the intermediate member 3; 1. This is an automobile seat device comprising a release means capable of releasing the second fixing device 5 when the second bracket 2 is tilted forward with the fixing device 4 released.

In the above-mentioned known automobile seat device, in order to adjust the inclination angle of the seatback 7 while heating, the seatback must be forcibly tilted forward or backward with the operating lever 8 released. The engagement of the first fixing device 4 does not necessarily match with the adjusted inclination angle of the seat back 7, and furthermore, depending on the above-mentioned degree of the seat back 7, the second fixing device 5 may be released inadvertently. There was a problem with this. Further, even when this known automobile seat device is equipped with a return spring that forcibly biases the seat back 7 forward, when the operating lever 8 is released, not only the first fixing device 4 but also the second fixing device 4 is released. Device 5 is also released, and in this case, the operator
If you operate the seat while facing the passenger, the seatback may accidentally hit your face and cause injury.

The present invention has been developed in view of the above-mentioned problems, and the inclination angle of the seated state can be adjusted in multiple stages using only a control lever, and it also has the function of folding the seat back into a bifold state where it overlaps the seat cushion. The purpose of this invention is to provide a car seat with a high quality.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings of FIGS. 1, 2, and 4.

In FIG. 1, 6 is a seat cushion and 7 is a seat back. A base plate 9 and a back arm 10 are attached to the seat cushion 6 and the seat back 7, and the back arm 10 has a rotation shaft 1 fixed to the base plate 9.
It is rotatably supported by 1. Reference numeral 13 denotes a suitable spring, the central end 13'a of which is inserted into the notched groove 11a formed in the rotation shaft 11, and the outer end 131j of which is inserted into the back arm 1.
The back arm 10 is constantly urged in the counterclockwise direction in the drawing by being engaged with a pin 15 implanted at the bottom. The back arm 10 is equipped with a reclining device 17 that can selectively adjust the tilting position in multiple stages between the standard position ◯ in which it stands upright and the fully flat position P in which it tilts at the end. Reclining device 17
These include a jaw tooth 25 having a plurality of locking teeth 19, a sliding protrusion 21, and a recess 23 formed on the periphery of the base end of the back arm 1.0, and the locking tooth of the upper tooth 25. It consists of a lower tooth 31 having locking teeth 27 identical to those of 19 and a notch 29 that fits into the sliding protrusion 21, and an operating lever 8 that operates the lower tooth 31 to move forward and backward with respect to the upper tooth 25. The lower tooth 31 is rotatably supported on the base plate 9 by a support shaft 33,
The locking teeth 27 of the lower teeth 31 are opposed to the locking teeth 19 of the upper teeth 25. The proximal side of the operating lever '8 is
The lever shaft 3 is rotatably attached to the base plate 9 via the bow. Further, a cam plate 37 that acts on the cam surface 31a of the lower teeth 31 is fixed to the lever shaft 35, and the operating lever 8 and the cam plate 37 are integrally fixed via the lever shaft 35.

The operating lever 8 has a cam protrusion 37a of the cam plate 37 that is connected to the first cam surface 3 of the cam surface 31a of the lower teeth 31.
1b, it is in the lowest position when the lock is activated, and the locking teeth 27, 19 of the lower teeth 31 and upper teeth 25 are in mesh. In addition, the cam protrusion 37a
When it acts on the second cam surface 3Jc of the cam surface 31a, the lock-off is activated and the lower teeth 31-
The locking teeth 27 and 19 of the upper tooth 25 are in a disengaged state, and the function of the so-called reclining device 17 is set to be in a lock-off state. In addition,
39 is a return spring for constantly pressing the cam protrusion 37a of the cam plate 37 against the first cam surface 31b; one end is fixed to the cam plate 37, and the other end is a sub-plate 41 integrally fixed to the base plate 9. They are installed respectively.

On the other hand, the back arm 10 is formed of an upper arm 43 fixed to the seat back 7 and a lower arm 45 rotatably supported on a rotation shaft 11 fixed to the base plate 9. The connecting portion is continuously supported at two points: the arm pivot shaft 47 and the locking portion 49.

One end of the connecting portion is rotatably pivoted by the arm pivot shaft 47, and the other end of the connecting portion is provided with a locking portion 49 that can be freely engaged and detached. The upper arm 43 and the lower arm 45 are formed with engaging grooves 43a and 45a cut out toward the rear, and when the protrusion 43b formed on the upper arm 43 comes into contact with the lower arm upper end surface 45b, the engaging groove 43a , 45a are aligned so that the locking portion 49 is engaged and disengaged. The locking portion 49 is fixed to one end of a support member 51 which is pivotally connected to the rotation shaft 1'1. A pin 51a is implanted at the other end of the support member 51, and a link lever 53 is hung between this pin 51a and a pin 8a implanted in the operating lever 8. A long hole 53a is formed in this link lever 53, and a pin 8a of the operating lever 8 is loosely fitted into this long hole 53a. The link lever 53 moves along with the seat back 10 between the positions so that the pin 8a does not affect the link lever 53 even if the operation lever 8 is operated. It is formed so as to substantially abut on the elongated hole end 53b. Reference numeral 55 denotes a tension spring, which is tensioned between the support member 51 and the pin 15 implanted in the lower arm 45, so that the support member 51 is constantly moved counterclockwise in the drawing, that is, the locking portion 49 is engaged with the groove.

43a and 45a are biased in the direction of engagement. The pin 15 implanted in the lower arm 45 is connected to the fittest spring 1 as described above.
1. This is a locking portion of the tension spring 55, and is loosely fitted into an arc-shaped elongated hole 9a of the base plate 9 with the rotating shaft 11 as the center, thereby regulating the tilting range of the seat back 10.

Next, the operation will be explained. First, in adjusting the inclination angle of the seatback lO in the seated state, when the operating lever 8 is rotated clockwise in the drawing, the cam protrusion 37a on the cam plate 37 moves away from the first and first cam surfaces 31b of the lower tooth 31 and moves to the second position. The locking tooth 27 of the lower tooth 31 is rotated in the counterclockwise direction shown in the figure while contacting the cam surface 31c.
The engagement of the engagement teeth 19 of the upper teeth 25 is released. In this state, the seat back 10 can be tilted backward against the biasing force of the fit spring 11 and adjusted in multiple stages up to the fully flat position P. If desired, the operating lever 8 can be moved in the tilted position of the seat back IO. When released, the operating lever 8 releases the return spring 3.
The cam projection 37a of the cam plate 37 rotates counterclockwise in the drawing due to the biasing force 9, and at the same time the cam projection 37a of the cam plate 37 engages the first cam surface 3 of the lower teeth 31.
1b, the lower teeth 31 are rotated clockwise in the figure, and the engagement teeth 27 of the lower teeth 31 mesh with the engagement teeth 19 of the upper teeth 25. Next, when the seat back 0 is tilted forward and the upper foot 43 is folded down to fold in two, when the operating lever 8 is rotated clockwise in the figure, the lower teeth 31 are disengaged from the upper teeth 25, and the back arm 10 is an upper arm 43, a lower arm 45, and a supporting member 51, which are integrated into one and move the lower arm 4 in the counterclockwise direction in the figure.
The seatback 10 rotates until the pin 15 implanted in the base plate 9 contacts the front end of the elongated hole 9a of the base plate 9, and in this position, the seat back 10 is rotated until the locking portion 49 of the support member 51 engages with the upper arm 43 and the lower foot 45. It is in a state where it is fitted into the grooves 43a and 45a. At this time, the link lever 5 connected to the support member 51
3 also rotates and pulls the pin 8a of the operating lever 8, so even if the operating lever 8 is released, the operating lever 8 remains in the disengaged state position M.
It is in. Next, when the operation lever 8 is rotated to the lock position, the support member 51 is rotated clockwise via the link lever 53 against the tension spring 55, and the locking portion 49 is moved into the engagement groove 4.
3a' and 45a, the upper arm 43 is tilted forward with respect to the lower arm about the arm pivot shaft 47, that is, can be rotated counterclockwise in the figure, and the seat back 7 is placed on the seat cushion 6. It will be folded in half so that it overlaps.

In addition, when restoring the seat folded in half in this manner, the upper arm 43 may be rotated clockwise in the figure until the locking portion 49 of the support member 51 is fitted into the engagement groove 43a of the upper arm 43. .

In the above embodiment, the support member 51 and the operating lever 8 are connected by the link lever 53, but the link lever 53 is not limited to this, and the supporting member 51 may be extended and connected to the operating lever 8. , or link lever 5
Wire may be used instead of 3. Further, the reclining device and the pack arm locking mechanism are not limited to the above-mentioned embodiments, and may be any device that can adjust the inclination angle of the base plate and the back arm and release the engagement between the upper arm and the lower arm.

As explained above, according to the present invention, in addition to a reclining device that can adjust the inclination angle of the seat back in multiple stages, and a reclining device that allows the seat back to be folded backwards into a fully flat state and folded into a bifold state where it overlaps the seat cushion, The reclining device can be unlocked by operating the control lever, and the seatback can be folded in half by operating the control lever only in a limited position, which is the most forward tilted position of the seatback, so one operation of the control lever is enough. This prevents the seat back from being folded in half accidentally. Furthermore, since a conventional reclining mechanism can be used, there are excellent effects such as minimal design changes required.

[Brief explanation of the drawing]

1 is a side view of a seat equipped with the device of the present invention, FIG. 2 is a front view of a known automobile seat device, and FIG. 3 is a front view of the device of the present invention. FIG. 4 is a side view of FIG. 3. 6... Seat cushion, 7... Seat back, 8
...Operation lever, 9...Base plate, 1o...
・Back arm, 17..., reclining device, 4
3... Upper arm, 45... Lower arm, 51...
・Supporting member. Patent Applicant: Fuji Kiko Co., Ltd. - Corporate Procedural Amendment Statement, Director General of the Patent Office, 1, Indication of Case: 1982 Patent Application No. 007563 2
, Name of the invention MM'a Nihon-3, Relationship with the person making the amendment Patent applicant 4, Tatsuitsu 2 Address (residence) 3-9, Nihonbashi Honmachi, Chuo-ku, Tokyo 5 Address (residence) Name (name) [Phase] 5. Date of amendment order April 26, 1981 6. Subject of amendment
Application, specification, drawings. 7. Contents of amendment: Reprint of specification (drawings) (no change in content)

Claims (1)

[Claims] A back including a base plate fixed to a seat cushion, a lower arm rotatably connected to the base plate, and an upper arm rotatably connected to the lower arm and fixed to the seat back. an arm, a reclining device that adjusts the bank arm so that it can tilt relative to the base plate, a support member that restricts rotation of the upper arm with respect to the lower arm, and an engagement between the reclining device and the support member. An automobile seat device comprising an operating lever that is independently released.