JPH0139631Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat sliding mechanism, and to explain in more detail, it is equipped with a fixed rail and a movable rail, and the seat back and seat cushion can be moved back and forth together by the back and forth movement of the movable rail. The present invention relates to a seat sliding mechanism in which a seat cushion can be moved and adjusted in the longitudinal direction of the seat separately from the seat back.

Generally, a vehicle seat 1 has the following features, as shown in FIG.
A slide mechanism 4 consisting of a fixed rail 5 and a movable rail 6 provided on the floor of a vehicle moves the entire seat 1 consisting of a seat cushion 2 and a seat back 3.
The seat is configured to be movable in the front-rear direction, and can be adjusted according to the body shape or preference of the seated person. In addition to this, there is a demand for a seat cushion 2 that can move and adjust only the seat cushion 2 in the front-rear direction to adjust the depth of the seat 1, and for this purpose various slide mechanisms have been proposed that are provided with double slide mechanisms.

However, providing a double slide mechanism has the disadvantage of making the mechanism extremely complicated and increasing the weight.Furthermore, due to the relationship with the conventional slide mechanism that moves the entire seat 1 in the front and back direction, the seat cushion The height above the vehicle floor was too high, making it impossible to obtain an appropriate seating feeling.

The present invention was developed in view of these circumstances, and utilizes a conventional slide mechanism that moves and adjusts the entire seat in the front-back direction, and has an extremely simple configuration that allows the seat cushion frame to be easily and easily moved in the front-back direction of the seat. This invention provides an inexpensive and lightweight seat sliding mechanism that can be moved appropriately and reliably locked at a desired position, as will become clear from the detailed description below with reference to the drawings.

2 to 4 schematically show a first embodiment of the seat sliding mechanism according to the present invention, and this seat 11 is equipped with a seat cushion 12 and a seat back 13. A head rest 14 is provided, and a seat back 13
is configured to be tiltable back and forth by a reclining mechanism 15.

Seat cushion 12 cushion frame 1
6 is attached to a longitudinal slide mechanism 17 provided on the vehicle floor. The longitudinal slide mechanism 17 consists of a pair of fixed rails 18 fixed on the vehicle floor, and a pair of movable rails 19 that fit into the fixed rails 18 and are movable in the longitudinal direction.
Its position relative to the fixed rail 18 is adjusted by a first locking mechanism 21. First locking mechanism 21
This is done by the engagement of the slide latch 22 attached to the movable rail 19 side with a plurality of locking grooves 23 formed along the longitudinal direction of the fixed rail 18, and the slide latch 22 and The engagement state with the locking groove 23 is released. Reference numeral 25 is a wire that interlocks the left and right first lock mechanisms 21, and as shown in FIG. 3, when the slide lever 24 provided on the right first lock mechanism 21 is rotated clockwise. The left and right slide latches 22 are pulled out from the locking grooves 23, respectively, and the movable rail 19
This will release the locked state.

Brackets 27 are fixed to the rear portions of the pair of movable rails 19, and a base 28 of the reclining mechanism 15 is fixed to one of the brackets 27.
A reclining arm 29 whose rotation angle can be adjusted is attached to the base 28, one lower end of the back frame 31 of the seat bag 13 is fixed to this arm 29, and the other lower end of the back frame 31 is fixed to the other bracket 27. are hinged, and the forward and backward tilting of the seat back 13 is adjusted by operating the reclining lever 32.

A pair of sliders 34 made of a synthetic resin plate or the like are provided at the front and back positions of the upper part of the movable rail 19. Guide grooves 35 are formed in each of these sliders 34 along the longitudinal direction of the movable rail 19. Guide grooves 36 are also formed in the movable rail 19 correspondingly. The cushion frame 16 of the seat cushion 12 is placed on the movable rail 19 via the slider 34.

A guide member 37 is provided on the bottom surface 16a of the cushion frame 16 at a position facing the guide grooves 35 and 36 formed in the slider 34 and the movable rail 19, respectively. This guide member 37
In this embodiment, a guide pin 38 is inserted below the upper side of the guide grooves 35 and 36, or above the lower side, and a nut 39 is screwed into the guide pin 38. However, any material that can guide the cushion frame 16 along the guide grooves 35 and 36 is sufficient.

In the above embodiment, the slider 34 is fixed to the movable rail 19, but the slider 34 can also be fixed to the cushion frame 16 side. 16a side, and the guide member 37 may be provided on the movable rail 19 side.

The positions of the movable rail 19 and the seat cushion 12 are adjusted by a second locking mechanism 41. This second locking mechanism 41 is achieved by engagement between a plurality of locking grooves 43 formed on the inner side of the movable rail 19 and a slide latch 42 attached to the cushion frame 16 side, and the cushion slide lever By operating 44, the engagement between the slide latch 42 and the locking groove 43 is released, similar to the first locking mechanism 21 described above.

As is clear from FIGS. 2 and 3, the cushion slide lever 44 of the second lock mechanism 41 is provided on the side opposite to the side on which the slide lever 24 of the first lock mechanism 21 is formed. By rotating the cushion slide lever 44 counterclockwise in FIG. 3, the slide latch 42 is pulled out from the locking groove 43, and the interlocking wire 45 similarly releases the other second locking mechanism 41. , only the seat cushion 12 is adjusted by moving in the longitudinal direction along the guide grooves 35 and 36.

FIG. 5 schematically shows a second embodiment of the seat sliding mechanism according to the present invention, and parts corresponding to those in the first embodiment described above are designated by the same reference numerals, and further detailed explanation will be omitted. Although this is omitted, the structure is the same as that of the embodiment described above, except that the moving means for moving only the seat cushion 12 and the locking state are different.

That is, a bracket 51 is fixed to the movable rail 19 so as to protrude laterally, a screw shaft 52 is rotatably supported on the bracket 51, and a block 54 has a female thread 55 that is screwed into the male thread 53 of the screw shaft 52. is screwed onto the screw shaft 52, and the block 54 is fixed to the fixing portion 16b of the cushion frame 16 with the bolt 57 via the fixing member 56.
An operating knob 58 is formed at the tip of the handle.

In such a configuration, when the operation knob 58 is rotated, the block 54 moves in the front-rear direction along the screw shaft 52, and the cushion frame 16 fixed to the block 54 moves along the guide grooves 35 and 36 in the same manner as described above. The movement is adjusted in a stepless manner in the front and back direction, and the movement is held in a locked state at the adjusted position.

The above is the configuration of one embodiment of the seat sliding mechanism according to the present invention. According to this configuration, only the seat cushion can be moved and adjusted in the front and back direction using the movable rail, and the configuration for this purpose is as follows. To provide an inexpensive and lightweight seat sliding mechanism that is extremely simple, does not make the height of the seat cushion too high, can be moved and adjusted reliably to a desired position with simple operation, and can be reliably locked in the adjusted position. can be obtained.

[Brief explanation of the drawing]

FIG. 1 is an explanatory side view of a conventional seat, FIGS. 2 to 4 schematically show a first embodiment of the seat sliding mechanism according to the present invention, and FIG. 2 is a perspective view of the seat. Fig. 3 is a front explanatory view, Fig. 4 is a perspective view of the slide mechanism with the seat cushion removed, and Fig. 5 is a schematic diagram of the second embodiment of the present invention, with the seat cushion removed. It is a perspective view of the slide mechanism in the state. In the figure, 11... Seat, 12... Seat cushion, 13... Seat back, 15... Reclining mechanism, 16... Cushion frame, 17
... Front and rear slide mechanism, 18 ... Fixed rail, 1
9...Movable rail, 21...First lock mechanism,
31...back frame, 34...slider,
35, 36... Guide groove, 37... Guide member,
41...Second lock mechanism, 51...Bracket, 52...Screw shaft, 54...Block, 56...Fixing member, 58...Operation knob.

Claims (1)

[Scope of utility model registration request] A fixed rail and a movable rail are provided, the movable rail is provided so as to be movable and adjustable in the front and back direction with respect to the fixed rail by a first locking mechanism, and a seat cushion provided on the movable rail and a seat cushion provided on the rear of the movable rail are provided. The seat bag attached through the bracket can be moved and adjusted as a unit in the front and back direction, and between the upper end surface of the movable rail and the bottom surface of the seat cushion frame of the seat cushion, A slider is provided at the front and back positions of the upper end surface of the movable rail, and a guide groove extending in the front and rear direction is formed in the upper end surface of the slider and the movable rail so as to penetrate in the vertical direction. A guide member is provided that is slidable in the front-rear direction along the guide groove, and the seat cushion is connected to the guide groove formed on the upper end surface of the slider and the movable rail independently of the seat back, and the guide member is slidable along the guide groove. The seat cushion is configured to be able to move in the front-rear direction by sliding adjustment, and the back-and-forth movement of the seat cushion with respect to the movable rail is adjusted by a second lock mechanism provided between the movable rail and the seat cushion. The seat sliding mechanism is characterized by: