JPS5826823Y2 - Seat elevation adjustment device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a lift adjustment device for a vehicle seat, which is capable of raising or lowering the front or rear end of the seat to adjust its height. .

Various devices have been devised to improve the operability of vehicles by making the seat part adjustable up and down. Those with a swinging structure can firmly hold the load acting on the seat, such as a downward load, but there is a problem in strength that it is insufficient for the load in the opposite direction (upward direction). be.

To this end, measures have been taken to firmly hold the load in the opposite direction, such as by improving the precision of the stopper's engaging portion, or by making the shape larger or more complex.

However, such a device cannot be installed in a device with a relatively small installation space.

Furthermore, as the structure becomes more complex, if used for a long period of time, there is a risk of malfunction.

In addition, there were drawbacks such as increased manufacturing costs.

In view of the above-mentioned drawbacks, the present invention has a structure in which the load acting in the vertical direction of the seat can be stopped by a blocking member provided slidably in a direction perpendicular to this, and the blocking member is By having the guiding member share and receive the load acting on the blocking member, and by preventing the blocking member from producing any component force in the sliding direction in response to loads from any direction. A vehicle seat elevation adjustment system that allows the height of the seat to be adjusted with a simple structure, that can be firmly held in any position, and that is easy to assemble and easy to install. The aim is to provide equipment.

Hereinafter, the implementation of the present invention will be explained in detail with reference to the drawings.

In FIG. 1, 1 is a seat consisting of a seat portion 1a and a backrest 1b.

2 and 2' are a pair of seat adjusters, and the floor (not shown)
The rear ends of the upper rails 2b, 2b' and the lower part of the rear end of the seat 1a are hinge members. They are rotatably connected via 3 and 4.

A position adjustment member 5 that can adjust the seat 1 in the longitudinal direction of the vehicle is attached to one side 2' of the seat adjuster.

6 and I are abbreviated board-shaped boards fixed to the front ends of the upper rails 2b, 2b'.

In FIGS. 2 and 3, an operating lever 8 is pivotably mounted on a side wall 6a of one of the substrates 6 about a shaft 9. As shown in FIGS.

Reference numeral 10 denotes a horizontally long mounting plate that is positioned so as to sandwich the side wall 6a of the board 6 and is fixed to the front lower part of the seat portion 1a.A holding portion 10a having a U-shaped cross section is formed on the left side of FIG. A pin 11 that crosses the board 6 is implanted at the lower end, and a protrusion 10b and a bent part 10c for preventing rattling are provided on the extending part extending to the right so as to sandwich the board 6.

A link 12 has one end fitted onto the pin 11, and the other end is fixed to one end of a connecting rod 13 that extends through the side wall 6a of the base plate 6 to the other seat adjuster 2'.

Reference numeral 14 denotes a blocking member, which has oblong holes 14a on both left and right sides.

14b is bored, one of the elongated holes 14a is engaged with the connecting rod 13, the other 14b is engaged with the shaft 9 of the operating lever 8, and the blocking member 14 is inserted in the longitudinal direction of the rail (left and right direction in Fig. 3). )
There are a plurality of notches 14c, 14c, . . . in the vertical direction between the elongated holes 14a and 14b.
An adjustment groove 14d is formed, and the pin 11 fits into this notch 14c.

14c, . . . can be engaged and detached.

A slightly vertically elongated hole 14e is bored below the elongated hole 14b, and a pin 15 implanted at the lower end of the operating lever 8 is loosely fitted into this.

Reference numeral 16 denotes a tension spring serving as a biasing means, one end of which is engaged with the blocking member 14 and the other end of which is engaged with the substrate 6.
is always biased to the right in Figure 3.

In FIG. 1, the other end of the connecting rod 13 passes through the side wall 7a of the board I which is fixed to the other seat adjuster 2' and the upper rail 2b', and the link is provided near the side wall 7a. Same as 12.

One end of a link 17 of the same size is fixed in the same direction, and the other end of the link 17 is rotatably connected to a bracket 18 fixed to the lower front end of the seat portion 1a.

Next, the operation of the device of the present invention having the above-mentioned configuration will be explained. In order to move and adjust the seat portion 1a of the seat 1 from the lower position to the upper position, the operating lever 8 is pressed in the lower position shown in FIG. When rotated clockwise around shaft 9, pin 15
The blocking member 14 that is pressed moves to the left against the biasing force of the spring 16.

Then, the notch 14c of the blocking member 14 comes off the pin 11 planted at the lower end of the mounting plate 10, and the vertical restraint of the pin 11 is touched.

In this state, when a force is applied to the backrest 1b of the seat 1 in a backward tilting direction, the seat 1a swings around the hinge members 3 and 4, and the front end of the seat 1a rises.

Along with this, the mounting plate 10 fixed to the seat portion 1a floats up, and the pin 11 implanted therein comes to be located at the upper stage as shown in FIG. 6, so you can release your hand from the operating lever 8. Ba,
The blocking member 14 returns to its original position (the position indicated by the two-dot chain line in FIG. 6) due to the biasing force of the spring 16, and the notch 14c is formed in the pin 11.
The upper stage of is engaged, and the seat portion 1a is restrained in the upper stage position.

Note that on the other side of the seat 1a, as the bracket 18 fixed to the seat rises, the link 17 connected thereto
Since the structure is such that the connecting rod 13 and the link 12 on the operation lever 8 side rotate together, the pin 1 rotates.
1 engages with the upper stage of the notched key 14cc7), the link 17 is locked in the operating position, and the seat portion 1a on the other side is also reliably held in the upper stage position.

Adjustment of the front end of the seat portion 1a from the upper stage to the lower stage is performed by operating the operating lever 8 clockwise to release the restraint of the pin 11, similar to the above-mentioned operation in the upper stage direction. Instead, a downward force may be applied to the front end of the seat portion 1a.

As described above, according to the present invention, a board having a side wall erected toward the side of the seat is fixed to the seat adjuster or the floor, and the board has a downward U-shaped cross section in front, and the side walls of the board are sandwiched from the left and right sides. Attach a mounting plate having a holding part to the seat part,
A pin is implanted in the holding part with both ends supported, and a blocking member capable of locking the pin at any position in the vertical direction is disposed on the substrate so as to be slidable in the front and back direction. The load acting on the blocking member through the substrate is received by the board, reducing the load acting on the husband and wife.Since the blocking member is structured so that it can slide only in a direction perpendicular to the direction of load application, even if a collision occurs, Even if a high upward or downward load is applied, such as when a high load is applied in the upward or downward direction, no force is generated to move the blocking member in the sliding direction, and the engagement between the pin and the blocking member is reliably maintained, and when the seat is raised, However, it reliably suppresses lateral wobbling of the seat, and the seat is firmly held in any position.

Furthermore, since the blocking member is structured to slide, the device is relatively compact and can be applied to devices with a small installation space.

Furthermore, since the device of the present invention is installed outside the seat adjuster, there is no need to increase the height of the seat adjuster, so it can be installed at a lower position on the seat, reducing the head space of the occupant. There is no need to narrow it down.

Furthermore, the device is easy to assemble, can be easily attached to different types of seat adjusters, and can be easily attached to the seat from the side of the seat, making it highly practical.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing one embodiment of the device of the present invention, Fig. 2 is an enlarged perspective view of main parts, Fig. 3 is a front view, Fig. 4 is a top view, and Fig. 5 is Fig. 3 V-v. FIG. 6 is a cross-sectional side view taken along a line, and FIG. 6 is a front view showing the operating state. 1... Seat, 1a... Seating area, 1b...
...Backrest, 2.2'...Seat adjuster, 2a, 2a'...-Lower rail, 2b, 2
b'... Upper rail, 3... Hinge member, 4... Hinge member, 5... Position adjustment member, 6... Board , 6a...Side wall, 7...Substrate, 7a...Side wall, 8.
...Operation lever, 9...Axis, 10...
...Mounting plate, 10a...Holding part, 10b...
...Protrusion, 10c...Bent part, 11...
...Pin, 12...Link, 13...
...Connecting rod, 14...Blocking member, 14a...
...Long hole, 14b...Long hole, 14c...
...Notch, 14d...Adjustment groove, 14e...
...Long hole, 15...Pin, 16...
Tension spring, 17... Link, 18...
···bracket.

Claims (1)

[Scope of utility model registration request] In a seat 1 in which the rear part or the front part of the seat part constituting the seat is rotatably connected to the seat adjuster or the floor, the seat part 1a has a side wall 6a standing upright toward the side part of the seat part 1a, and the seat adjuster or the floor A board 6 is fixed to the seat part 1a, and has a holding part 10a which is attached to the seat part 1a and has a downwardly U-shaped cross section in front, and which holds the side wall 6a of the board 6 from the left and right sides. Mounting plate 10 installed with support
and a plurality of notches 14c, . a blocking member 14 slidably guided by the blocking member 14;
a biasing means 16 that always biases the notches 14c, . . . in the direction in which the notches 14c, . . . A seat elevation adjustment device comprising: