JPS61176308A - Reclining seat positioning apparatus - 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 (Field of Industrial Application) The present invention relates to a positioning device for a reclining seat in which a seat back is pivotally supported on a seat portion and the inclination angle of the seat back can be adjusted.

(Prior art) Conventionally, as a positioning device for a reclining seat,
For example, as disclosed in Japanese Utility Model Publication No. 55-47408, by setting the inclination angle of the seat back to a predetermined angle position, the user can operate the operating lever to unlock the seat back and perform rate back. Some seats are equipped with a memory mechanism so that when the seatback is tilted forward from the set angle position and then the seatback is tilted backwards, the seatback is automatically positioned at the set angle position.

However, in the conventional reclining seat positioning device described above, when the seat back is tilted forward from the set angle position, the seat back is automatically positioned at the set angle position. When operating a seatback that is tilted more backwards, the seatback cannot be automatically positioned at the set angle position, and the memory mechanism is extremely complicated, resulting in high manufacturing costs. There was a point.

(Problems to be Solved by the Invention) The present invention has been made by focusing on such conventional problems. To provide a positioning device for a reclining seat which can automatically position the seat back at a preset set angle position in both the operation and the forward tilt operation, and which has an extremely simple structure and operation. The purpose is

(Means for Solving the Problems) The gist of the present invention for achieving the above object is to provide a positioning device for a reclining seat in which a seat back is pivotally supported on a seat portion and the inclination angle of the seat back is adjustable. An operating handle that can be operated between a lock position and an unlock position for locking the seat back to the seat is provided on either the seat back or the seat, and the other has an engagement groove formed in its outer periphery. The memory plate is fastened in a rotationally adjustable manner, and has an engagement pin that can be engaged with the outer peripheral portion and the engagement groove, and an operating member that engages and disengages the engagement pin with the engagement groove. The present invention relates to a positioning device for a reclining seat, characterized in that it is provided on an operating handle.

(Function) In the above reclining seat positioning device, with the inclination angle of the seat back set at a predetermined angular position, the engagement groove of the memory plate is engaged with the engagement pin, and the memory plate If it is fastened to the other side, both when operating the seat back tilted forward from the set angle position to the rear and when operating the seat back tilted backward from the set angle position to the forward tilt,
When the engagement pin engages with the engagement groove, the seat back is automatically positioned at the set angle position.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

1 to 8 show an embodiment of the present invention.

As shown in FIGS. 1 and 2, a base plate 2 is fixed to the seat portion 1a of the reclining seat 1, a locking plate 3 is fixed to the seat back 1b, and this locking plate 3 is fixed to the base plate 2. It is pivotally supported on a shaft 2a.

Thereby, the seat back ib is pivotally supported by the seat portion 1a.

As shown in FIGS. 1 and 3, a spring hook provided on the locking plate 3 is attached counterclockwise by a thinly wound spring 3b stretched between a portion 3a and a shaft 2a. Forced. A toothed portion 3C is formed on the outer peripheral portion of the base end of the locking plate 3. A memory plate 4 having an engagement groove 4b formed in an outer peripheral portion 4a is supported on the shaft 2a. Guide groove 4C of this memory plate 4
A bolt 4d that can be fastened to the locking plate 3 is engaged with the memory plate 4, and the memory plate 4 is fastened to the locking plate 3 by the bolt 4d so that its rotational position can be adjusted.

As shown in FIGS. 1 to 4, there is a locked position (position shown in FIGS. 1 and 7) where the seat back 1b is locked to the seat portion 1a and a lock release position (position shown in FIGS. 6 and 8). An operating handle 5 is provided on the base plate 2 and can be operated in any position.

This operating handle 5 is pivoted on a shaft 2b fixed to the base plate 2, and has an operating lever 50 having a toothed portion 50a that engages with a toothed portion 3c of the locking plate 3 at its tip.
It consists of a hollow operating part 51 fixed to the base end of the operating lever 50, and a spring member 52 that biases the operating lever 50 in the direction (counterclockwise) in which the toothed part 50a meshes with the toothed part 3c. ing.

As shown in FIG. 1 and FIG. 3 to FIG. The operating handle 5 is provided with an operating member 6 that engages and disengages from the groove 4b.

The operating member 6 includes a bell crank 61 pivotally mounted on the same shaft 2b as the operating lever 50, a holding portion B2 that slidably holds the engagement pin 60, and one end 8 of the bell crank 61.
1a to the base end of the engagement pin 80.

Toro 3, an operation button 65 that is slidably held within the operation section 51 and is biased by a spring member 64 in a direction in which the head protrudes from the opening 51a of the operation section 51, and a base end of the operation button 65. [t5a is connected to the other end Blb of the bell crank 81
It consists of a rod 66 connected to.

As shown in FIGS. 1, 3, and 5, the holding portion 62 includes a guide member 82a that is fixed to the operating lever 50 and slidably guides the engagement pin BO, and It consists of a spring member 82b that urges the engagement pin 60 in a direction in which the tip end engages the outer circumference 4a of the memory plate 4 and the engagement groove 4b, and a cover 82c that covers them.

As shown in FIG. 2, a cover plate 7 is attached to the reclining seat 1 to cover a portion of the memory plate 4° operating handle 5 and a portion of the operating member 8.

In the reclining seat positioning device having the above configuration, after the operating handle 5 is operated to the unlocked position and the inclination angle of the seat back 1b is adjusted to a predetermined angle position, the operating handle 5 is moved to the locked position as shown in FIG. When the operating lever 50 is returned to
The seatback 1b is locked at the set angle position by meshing with the teeth 3C.

In this state, loosen the pin 4d, rotate the memory plate 4, and align the engagement groove 4b with the engagement pin 8 as shown in FIG.
0 and tightening the port 4d again, the set angular position can be memorized.

When tilting the seat back backward from this memorized set angle position, hold the operating section 51 and press the operating button 65.
When the operating handle 5 is pulled up from the locking position shown in FIG. 1 while pressing , the engagement pin 60 disengages from the engagement groove 4b and the toothed portion 50a of the locking plate 3 disengages from the toothed portion 3C of the locking plate 3 ( (This state is shown in FIG. 6), tilt the unlocked seatback 1b backward as shown in FIG. 6 to a desired angle position as shown in FIG. When released, the operating lever 50 returns from the unlocked position shown in FIG. 6 to the locked position due to the biasing force of the spring member 52, the toothed portion 50a engages with the toothed portion 3C, and the seatback lb moves to the rearward tilted position shown in FIG. And low.

At this time, the engagement pin BO is connected to the spring member fli2b.
It is brought into contact with the outer circumferential portion 4a of the memory plate 4 by the urging force of.

If you want to return the seat back 1b from the rearward tilted position in Figure 7 to the set angle position in Figure 1, lift only the operating handle 5 from the lock position to unlock the seat back 1b (this state 8), the seat back lb returns from the rearward tilted position to the set angle position due to the biasing force of the spiral spring 3b, and during this time the seat back lb is moved back from the rearward tilted position to the set angle position, and the engagement which was in sliding contact with the outer peripheral part 4a of the memory plate 4 during that time is When the pin 60 engages with the engagement groove 4b, the seat back lb is automatically positioned at the set angle position. When the operating handle 5 is released when the engaging pin 60 is engaged with the engaging groove 4b, the operating lever 50 returns to the lock position and the seat back lb is locked at the set angle position shown in FIG. 6.

Further, when the seat back is tilted forward from the set angle position shown in FIG. 6 and the seat back 1b is returned from this forward tilted position to the set angle position,
Since the engagement pin 60 that was in sliding contact with the engagement groove 4b engages with the engagement groove 4b, the seat back lb is automatically positioned at the set angle position.

Note that, contrary to the above embodiment, the memory plate 4 is placed on the base plate 2 side, and the operation/handle 5 and operation member 6 are placed on the base plate 2 side.
may be provided on the locking plate a side.

(Effects of the Invention) In the reclining seat positioning device according to the present invention, the engagement groove of the memory plate provided on either the seat back or the seat portion is engaged with the engagement pin provided on the other. Since the set angle position of the seat back is memorized, the seat back can be automatically positioned at the set angle position no matter which direction the seat back is operated, and the structure is extremely simple.
Manufacturing costs can be reduced.

[Brief explanation of drawings]

1 to 8 show one embodiment of the present invention.
2 is a plan view showing the entire sheet, FIG. 3 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 4 is a sectional view taken along the line rV-IV in FIG. 1. , FIG. 5 is an enlarged plan view of the main part, and FIGS. 6 to 8 are operation explanatory diagrams. 1... Reclining seat

Claims (1)

[Claims] A positioning device for a reclining seat in which a seat back is pivotally supported on a seat part and the inclination angle of the seat back can be adjusted, including an operation handle that can be operated between a lock position for locking the seat back to the seat part and an unlock position. ,
A memory plate is provided on either the seat back or the seat portion, and a memory plate having an engagement groove formed on the outer periphery is fastened to the other such that the rotational position can be adjusted, and the memory plate is engageable with the outer periphery and the engagement groove. A positioning device for a reclining seat, characterized in that the operating handle is provided with an operating member that includes an engagement pin and engages and disengages the engagement pin from the engagement groove.