JPH0716352Y2 - Reclining seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a reclining seat, and more particularly to a reclining seat suitable for a small seat such as a baby seat provided in a bus for picking up a baby.

(Prior Art) Generally, a seat reclining device is provided after a seat cushion frame constituting a seat cushion, as described in a publication "New edition of Automotive Engineering Handbook, Vol. 6, page 26 (published by Automotive Engineering Society)". Lower bracket fixed to the end, an upper bracket fixed to the lower end of the seat back frame constituting the seat back and pivotally attached to the lower bracket so as to be rotatable in the front-rear direction, a ratchet integrally provided on the upper bracket, A pole that is rotatably attached to the lower bracket and that releasably meshes with the ratchet,
A release lever connected to the pole and biased by a spring in a direction in which the pole meshes with the ratchet.

According to the reclining device having such a configuration, when the release lever is rotated against the spring force to release the engagement of the pole with the ratchet, the seat back becomes rotatable in the front-rear direction, so that the engagement position of the pole with respect to the ratchet is changed. The reclining angle of the seat back can be adjusted.

(Problems to be solved by the invention) However, the above-described conventional reclining device has a large number of devices such as an upper bracket formed with a ratchet, a pole meshing with the ratchet, a release lever connected to the pole, and a spring for urging the lever. Since it is made up of the above parts, the structure is too complicated and too large to be applied to small seats such as infant seats installed in a bus for picking up children.

When the seat back is fully reclined, the seat cushion must be moved forward before the seat back hits the seat cushion in the rear row and cannot be fully reclined. Therefore, both the reclining of the seat back and the forward movement of the seat cushion are required, which is troublesome.

The present invention has been made to address such a problem, and its purpose is to provide a reclining seat with a simple structure suitable for small seats such as infant seats.
When fully reclining the seat back, the reclining operation of the seat back and the forward movement operation of the seat cushion can be performed by a single operation.

(Means for Solving the Problem) The present invention is directed to a seat cushion, a seat back in which a lower end portion is rotatably mounted in the rear end portion of the seat cushion in the front-rear direction, and the seat cushion and the left and right sides of the seat back. In a reclining seat including a pair of seat leg frames provided on both sides and fixed to a vehicle floor, a seat cushion slide long hole extending a predetermined length in the front-rear direction in the seat leg frames, and at least a predetermined vertical direction. A long hole for a seat back slide extending in length is provided, and a nut member is provided on one outer surface of each of the seat leg frames so as to be movable in the front-rear direction along the long hole for the seat cushion slide and regulated in rotation. , The other long hole for seat cushion slide of the other seat leg frame, the seat And a seat cushion frame that constitutes a seat cushion, and a seat knob for the seat cushion is loosened to both seat leg frames by a bolted knob that penetrates one of the seat cushion slide long holes of the both seat leg frames and is screwed into the nut member. The seat back is connected to the both seat leg frames via a pair of seat back slide pins that are fastened as much as possible and that are provided on both the left and right sides of the seat back and pass through the both seat back slide elongated holes. The lengths of the seat cushion slide long hole and the seat back slide long hole are determined so that the amount of movement of the bolted knob and the seat back slide pin is equal to both seat cushion surfaces of the seat cushion and the seat back. Must be set to a length that allows it to be in the same plane It is an feature.

(Operation and effect of device) In the reclining seat configured in this way,
The seat back can be raised up to the maximum by tightening the bolted knob at the rear end of the seat cushion slide elongated hole. If the knob with bolts is loosened and moved forward in the seat cushion long hole in this state, the seat cushion moves forward and the seat cushion slide pin moves downward in the seat back slide long hole. To do. As a result, the seat back standing upright at the rear of the seat cushion tilts rearward while moving forward from the lower end, and the bolt with knob is tightened at the desired position to tilt the seat back backward to the desired rearward (reclining state). ) Can be held. Also, since the length relationship between the seat cushion slide long hole and the seat back slide long hole is set to a specific relationship, the seat back is fully reclining and its seat surface is the same as the seat cushion seat surface. It is flat and can be placed in a substantially horizontal state together with the seat cushion.

According to the present invention, the seat leg frame is formed with the long hole for the seat cushion slide and the long hole for the seat back slide, and the seat leg frame, the seat cushion and the seat back are attached to the knob with the bolt and the seat back slide. Since the seat back can be tilted down to full reclining with an extremely simple structure connected by pins, the structure of the reclining mechanism is simple, compact and low cost, and it is extremely suitable for application to small seats such as infant seats. .

Further, the reclining operation of the seat back and the forward movement operation of the seat cushion can be simultaneously performed only by moving the bolted knob forward, which simplifies the operation.

(Embodiment) The first embodiment of the present invention will be described below with reference to the drawings.
FIG. 2 and FIG. 2 show an infant seat which is a reclining seat according to an embodiment of the present invention.

The infant seat S includes a seat cushion SC, a seat back SB and a seat cushion SB that are rotatably attached to the rear end portion of the seat cushion SC through a hinge 1 in the front-rear direction, and left and right sides of the seat back SB. A pair of seat leg frames 2 and 3 that are attached to the surface and fixed to the vehicle floor
Is equipped with.

The seat leg frame 2 on the left side is provided with a cushion member 4 for an elbow rest, and a seat cushion slide elongated hole 5a extending in the front-rear direction and a lower end portion extending in the up-down direction with a steep descending inclination. A plate 5 is fixedly provided with an inverted V-shaped seat back slide long hole 5b extending forward with a gentle inclination.
A plate 5 having the same structure is also fixed to the right seat leg frame 3.

A nut member 7 is provided on the outer surface of the right seat leg frame 3 so as to be movable in the front-rear direction along the seat cushion slide elongated hole 5a. The nut member 7 is fitted on a guide rail (not shown) provided below the seat cushion slide elongated hole 5a along the elongated hole 5a on the outer side surface of the seat leg frame 3 and is restricted from rotating. The guide member is slidable in the front-back direction. On the other hand, the seat cushion frame 6 is made of a pipe material, and the seat cushion frame 6 and the seat leg frames 2 and 3 include a long hole 5a for a seat cushion slide on the left side, a pipe portion of the seat cushion frame 6, and a right side. By screwing the knob 8 with a bolt penetrating the seat cushion slide long hole 5a into the nut member 7,
It is loosely fastened.

A pair of seat back slide pins 9 are fixedly provided on the left and right side surfaces of the seat back SB, and the pins 9 are inserted into the seat back slide long holes 5b to connect the seat leg frames 2 and 3 to the seat back SB. Has been done.

The present embodiment has the above-mentioned structure, and the bolt with knob 8 is tightened at the rear end of the seat cushion slide elongated hole 5a to seat the seat cushion frame 6 to the seat leg frame 2,
When fixed to 3, the seat back slide pin 9 is located at the upper end of the seat back slide long hole 5b, and the seat back SB stands up from the rear end of the seat cushion SC.

On the other hand, when the knob 8 with a bolt is loosened and moved to the front end along the seat cushion slide long hole 5a, the seat cushion SC moves forward, and at the same time, the seat back slide pin 9 moves the seat back slide long hole 5b. As the seat back SB moves forward, the seat back SB falls forward and the bolted knob 8 reaches the front end of the seat cushion slide elongated hole 5a. As shown by the chain double-dashed line in Fig. 2, the seat back SB falls to full recline without hitting the seat cushion SC1 of the rear row seat S1.

Therefore, according to this embodiment, the seat leg frame 2,
3 is formed with a seat cushion slide long hole 5a and a seat back slide long hole 5b.
3 and the seat cushion SC and the seat back SB are connected by the knob 8 with the bolt and the seat back slide pin 9 so that the seat back SB can be tilted down to full reclining, so the structure of the reclining mechanism is simple, It is small and low in cost, and is very suitable as a small seat such as a baby seat.

In addition, the reclining operation of the seat back SB and the seat cushion can be performed simply by moving from the rear end to the front end along the seat cushion slide long hole 5a from the bolted knob 8.
Since the SC forward movement operation can be performed simultaneously, the operation becomes easy.

In the present embodiment, the example in which the seat back slide elongated hole 5b is formed in a shape that bends in an inverted V shape that descends forward has been shown, but in the present invention, the seat back slide elongated hole 5b is formed. Long hole for seat cushion slide
By appropriately setting the length relationship with 5a, it is possible to form a shape that extends downward in a vertical direction or that descends and leans forward.

[Brief description of drawings]

FIG. 1 is a perspective view of an infant seat which is a reclining seat according to an embodiment of the present invention, and FIG. 2 is a side view showing the seat and a rear row seat. Explanation of symbols 1 ... Hinge, 2, 3 ... Seat leg frame, 5 ...
… Plate, 5a… Long hole for sheet cushion slide,
5b: long hole for seat back slide, 6 ... seat cushion frame, 7 ... nut member, 8 ... knob with bolt, 9 ... seat back slide pin, SC ... seat cushion, SB ... Seat back.

Claims (1)

[Scope of utility model registration request] 1. A seat cushion, a seat back in which a lower end portion is rotatably attached to a rear end portion of the seat cushion in a front-rear direction, and the seat cushion and the left and right side portions of the seat back. In a reclining seat having a pair of seat leg frames fixed to each other, a seat cushion slide long hole extending a predetermined length in the front-rear direction in the seat leg frames, and a seat back slide length extending at least a predetermined length in the up-down direction. A hole is provided, and a nut member is provided on one outer surface of each of the seat leg frames so as to be movable in the front-rear direction along the seat cushion slide long hole and regulates rotation, and the other of the seat leg frames is provided. The long hole for the seat cushion slide, and the seat forming the seat cushion. The seat cushion is loosely fastened to the seat leg frames by a cushion frame and a knob with a bolt that penetrates through one of the seat cushion slide long holes of the seat leg frames and is screwed into the nut member. The seat back is connected to the both seat leg frames via a pair of seat back slide pins that are provided on both left and right sides of the seat back and pass through the both seat back slide long holes. The lengths of the long hole for cushion slide and the long hole for seat back slide are such that the amount of movement of the knob with bolt and the pin for seat back slide is such that both seat surfaces of the seat cushion and the seat back are in the same plane. Reclining characterized by being set to an allowable length up to Over door.