JPS6320585Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat for a vehicle, etc., and in particular integrates a cushion frame and a movable rail of a slide adjustment device.

In the seats of vehicles, especially the driver's seat, the seat cushion can be adjusted to slide forward and backward, and the seat back can be tilted with respect to the seat cushion, so that the seating posture can be changed freely. A movable rail of a slide adjustment device and a reclining device are attached to the cushion frame, and a back frame is attached via this reclining device.

Therefore, in this configuration, the load from the back frame is transmitted from the reclining device to the cushion frame and is received by the slide adjustment device via the mounting member, so sufficient strength is required between each member, so that the entire seat There was a limit to how much weight could be reduced.

In addition, the slide adjustment device has a space inside the movable rail that is attached to the cushion frame and a fixed rail that is fixed to the vehicle body so that they fit into each other so that they can slide, thereby reducing the frictional resistance between the two rails. In this system, multiple rollers are inserted at appropriate intervals in the space between both rails, but since these rollers are simply inserted between the rails, the movable rail is not connected to the fixed rail. When moving, the distance between the front and rear rollers is not kept constant due to the friction and load applied to the rollers from the movable rail side, and this narrowing of the front and rear spacing worsens the load conditions, resulting in peeling input from the movable rail from the seat back. There is a risk that the slide adjustment device will become weak against the load and be destroyed.

In order to solve this problem, there is a structure in which slide blocks are fixed to the front and rear of the movable rail instead of rolling elements such as rollers, and the slide blocks slide on the fixed rail. However, with this configuration, the travel distance of the seat and the travel distance of the slide block are the same, so the length of the fixed rail is made equal to the length of the front and rear slide blocks plus the distance between them and the travel distance of the seat. Therefore, when increasing the distance of seat movement,
The fixed rail must be formed to be quite long, making it longer than the seat cushion, which poses a problem when seating.

Furthermore, it is difficult to lengthen the fixed rails in terms of space within the vehicle, and this has the disadvantage that it is not possible to obtain a seat that suits the physique or preference of the occupant.

The present invention was developed in view of these points, and it eliminates duplicate members at the joints between each frame and component members, reduces the number of component members to reduce weight, and allows smooth movement during slide adjustment using rollers. The present invention provides a seat for a vehicle or the like in which the load is dispersed by a sliding function body and the operating performance is improved.

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, 1 shows the entire seat of a vehicle or the like to which the present invention is applied, 2 is a seat cushion, 3 is a seat back, 4 is a slide adjustment device, and 5 is a reclining device.

The cushion frame 6 of the seat cushion 2 includes side frame parts 7, 8 which also serve as movable side rails of the slide adjustment device 4, and front and rear side frame parts 9, 10.
are connected to form a quadrilateral frame shape, and a V-shaped reinforcing member 11 is fixed between both side frame parts 7, 8 and front frame part 9.

Movable side rail parts 7', 8' having a U-shaped cross section and opening outward are integrally formed at the lower part of the side frame parts 7, 8.
8' is configured symmetrically, with lower horizontal flange parts (hereinafter referred to as horizontal flange parts) 7'a,
8'a has embossments 7'b, 7'c, 8'b, and 8c' that protrude downward at the front and rear ends, and between these embossments 7'b, 7'c, 8'b, and 8c', Slide function bodies 12 and 13 are arranged at the same positions. The slide function bodies 12, 13 are made of upper and lower resin sliders 14, 14', 15, 15' and front and rear rolls 1.
6, 16', 17, 17', and the upper sliders 14, 15 are formed with a plurality of grooves 14a, 15a communicating in the longitudinal direction on the upper and lower surfaces, while the lower sliders 14', 15' are Raised edge 1 on inner edge
4'a, 15'a are formed, and horizontal long holes 14'b, 14'c, 15'b, 15'c are bored in the front and rear ends, and these long holes 14'b, 14′c,1
5'b, 15'c have a lower diameter slider 14',
Rollers 16, 16', 1 whose thickness is slightly larger than 15'
7 and 17' are rotatably fitted. Further, the upper and lower sliders 14, 14', 15, 15' are provided on the outer edge side of the intermediate portion so as to be engaged in the longitudinal direction.
The upper sliders 14 and 15 have convex portions 14b and 15.
b, and the lower sliders 14' and 15' have recesses 1.
4'd and 15'd are formed.

This upper and lower slider 14, 14', 15, 1
5' to the horizontal flanges 7'a, 8'a of the movable rail parts 7', 8', the upper sliders 14, 15 to the upper surface, and the lower sliders 14', 15' from the lower surface to the side surface of the upright part, respectively. Convex portions 14b, 15b and concave portions 14'd,
15'd are fitted and joined. In this case, the upper and lower sliders 14, 14', 15, and 15' may be joined by bonding their opposing outer edges with adhesive instead of by fitting the uneven parts, or the upper and lower sliders may be integrally molded. good. In this way, the fixed side rails 18, 1 are attached to the movable side rail parts 7', 8' to which the upper and lower sliders 14, 14', 15, 15' are connected.
Assemble 9. The fixed side rails 18 and 19 are constructed approximately symmetrically, and have a rectangular cylindrical shape with spacing portions 18a and 19a along the inner edge of the upper surface.
Leg pieces 18b, 18c, 19b are integrated in the front and rear,
19c, upwardly protruding embossments 18d and 19d are formed at the rear end of the bottom surface, and through holes 18e and 19e are bored at the front end. These fixed side rails 18 and 19 are attached to the movable side rail parts 7' and 8', and the rising part and the lower slider 1
The raised edges 14'a and 15'a of 4' and 15' are the space part 1.
Insert from the rear so as to correspond to 8a and 19a. By this fitting, the lower slider 14', 1
Rollers 16, 16', 17, 1 fitted to 5'
7' is rolled into contact with the lower surface of the horizontal flange portions 7'a, 8'a of the movable rail portions 7', 8' and the bottom surfaces of the fixed rails 18, 19. In this way, the vertical sliders 14, 14', 15, 15' are connected to the fixed side rail 1.
8, 19, open the through hole 1 at the front end.
By inserting convex pins 20, 21 into 8e, 19e and caulking them, the slide function bodies 12, 13 are prevented from falling off, and the slide function bodies 12, 13, that is, the upper and lower sliders 14, 14', 15, 15' and movable side rail parts 7', 8' and fixed side rails 18, 1
9 refers to the embossing 7'b of the movable side rail parts 7', 8',
Between 7'c, 8'b, 8c' and fixed side rails 18, 1
It is relatively moved in the front-back direction between the embossings 18d, 19d of No. 9 and the pins 20, 21.

Here, the rollers 16, 16', 17, 17' fitted to the slide function bodies 12, 13 have their lower surfaces on the bottom surfaces of the fixed side rails 18, 19, and their upper surfaces on the horizontal flanges of the movable side rails 7', 8'. 7'a, 8'a, so these rollers 16, 16', 17,
When 17' itself rolls on the bottom surface of the fixed side rail by a distance l, the horizontal flanges 7'a and 8'a of the movable side rails 7' and 8' further move by the distance l along with the rolling of this roller. Therefore, for the rolling distance l of the rollers, the movable rail 7',
The horizontal flanges 7'a, 8'a of 8' always move by twice the distance l, ie, a distance 2l.

Here, the rolling distance of the rollers 16, 16', 17, 17' is the moving distance of the slide function bodies 12, 13, and the moving distance of the movable side rails 7', 8' is the moving distance of the seat.

Therefore, the length of the slide function bodies 12, 13 can be set to the length of the fixed side rails 18, 19 minus 1/2 the distance of movement of the cushion frame 6, that is, the seat in the longitudinal direction. For example, if the length of the fixed side rails 18 and 19 is 400 mm, the distance the seat moves forward and backward relative to the fixed side rails is 400 mm.
In the case of 100 mm, 400-1/2 (100 + 100) = 300, and the length of slide function bodies 12 and 13 is 300.
Can be set to mm. In this case, the movement distance of the slide function bodies 12 and 13 in the front and back direction is 1/2 of the movement distance of the seat, that is, the movable side rails 7 and 8 in the front and rear directions, and is therefore 50 mm respectively.

If this movement is carried out more than a predetermined amount, the end surfaces of the lower sliders 14' and 15' will abut and be locked against the above-mentioned embossing or pin, but if this abutment is carried out frequently, Since there is a risk of damage to the end surfaces, the upper and lower surfaces of the front and rear ends of the lower sliders 14', 15', that is, the front and rear end surfaces and the elongated holes 14'b, 1.
4'c, 15'b, 15'c on the upper and lower surfaces.
As shown in the figure, the embossing and pin escape groove 2
2a, 22b, the rollers 16, 16', 17, 17' directly abut against the embossing and the pin during each of the above-mentioned movements, ensuring secure locking and lower slider 14'. ,1
5' is prevented from being damaged.

Further, an adjustment lock mechanism is installed between one side frame 7 and the fixed side rail 18 so that the amount of movement can be adjusted as desired. That is, the upper edge of the inner surface of the fixed side rail 18 is extended horizontally to form a tooth profile 18f, and the side frame 7
It is engaged and locked by a locking device 23 fixed to. This locking device 23 is attached to a bracket 24 fixed to the side frame 7, and a square hole 2 is formed in the vertical direction at the rear end of the fixed side rail 18 to mesh with the tooth profile 18f.
An L-shaped lever 25 having a shape 5a is pivoted at its bent part by a stepped pin 26, and the square hole 25
The forming part surface of a always rotates outward, that is, the square hole 25
Spring 27 so that a engages with tooth profile 18f.
The tip of the lever 25 extends from the window hole 24a of the bracket 24 to the side frame 7.
It protrudes outward through a window hole 7a formed in the. The meshing between the square hole 25a of the lever 25 and the tooth profile 18f of the stationary side rail 18 is such that the square hole 25a engages with the peak of the tooth profile 18f, and both side edges of the square hole 25a engage with the tooth profile 18f.
This is done while engaging the troughs of 8f.

Further, a reclining device 5 is fixed to the rear part of one side frame part 7, a free hinge 28 of the seat back 3 is fixed to the rear part of the other side frame part 8, and furthermore, a free hinge 28 of the seat back 3 is fixed to the rear part of the other side frame part 8. Hook holes 7b and 8b are bored at the edge, and a pad receiving spring 29 is stretched.

As described above, according to the present invention, since the movable side rail of the slide adjustment device is integrally formed in the side frame portion of the cushion frame, there is no need for a member for fixing the cushion frame and the movable side rail. Since the load transmitted from the frame via the reclining device is directly supported by the slide adjustment device, the front and rear frame portions of the cushion frame only need to have enough strength to support the weight of the seated person, making it possible to use a thin plate structure. As a result, the weight of the entire seat can be reduced, and the work required to attach the movable side rail during assembly can be reduced, so that work can be streamlined.

In addition, in the present invention, the portion of the resin slide function body movably interposed between the movable rail and the fixed rail, that is, the portion sandwiched between the two rails, that is, the lower surface of the horizontal flange of the movable rail and the portion of the fixed rail. Rollers with a diameter slightly larger than the thickness of the part are rotatably fitted to the front and rear of the part sandwiched between the bottom surfaces, and are made to roll into contact with both rails, so that the front and rear rollers can be moved between the two rails. It is always held rotatable at a fixed distance by the slide function body and receives the load evenly, and when a large load or peeling force is applied to the seat, the slide function body distributes and receives the compressive force between both rails. In other words, in the case of such a large load, at least one of the two rails will be compressively deformed, but when it comes into contact with the slide function body, that deformation is stopped, preventing the rail from being destroyed, and both rails are compressed and deformed. The relative movement of the rails is extremely smooth from the start, and there is almost no fluctuation in the operating force regardless of the magnitude of the load, resulting in significantly improved operating performance and the ability to quickly adjust the seat position. Also, when the slide adjustment is activated, the movable side rail, the rollers of the slide function body, and the fixed side rail each move separately, and the rollers act as rollers between both rails, so the distance the slide function body moves is the same as the movement of the seat. Therefore, the length of the fixed side rail can be made shorter than the seat cushion of the seat, which has the effect of safely getting on and off and sitting down without hindrance to the seated person. .

Note that the present invention is not limited to vehicle seats, but can be applied to all seats whose front and rear positions can be adjusted.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of a vehicle seat to which the present invention is applied, Fig. 2 is an exploded perspective view of the cushion frame, Fig. 3 is an exploded perspective view of the locking device, and Fig. 4 is the seat of the cushion. 5 is an enlarged sectional view taken along the line A-A in FIG. 4, and FIG.
The figure is an enlarged sectional view taken along the line B--B in FIG. 4, and FIG. 7 is an enlarged sectional view taken along the line CC in FIG. 4. In the figure, 1 is a seat, 2 is a seat cushion, 4 is a slide adjustment device, 6 is a cushion frame, 7,
8 is a side frame part, 7', 8' are movable side rail parts, 7'a, 8'a are horizontal flange parts, 14, 1
4'15,15' are resin sliders, 16,1
6', 17, 17' are rollers, and 18, 19 are stationary side rails.

Claims (1)

[Scope of Claim for Utility Model Registration] A seat frame that is fitted into a rectangular cylindrical fixed side rail fixed to the floor so as to be movable back and forth, and has a movable rail with a substantially U-shaped cross section and a horizontal flange at the bottom. A seat for a vehicle, etc., having a vertical section having an outer shape that substantially contacts the inner circumferential surface of the fixed side rail, and having a length shorter than the fixed side rail and the movable rail, and the movable side rail. a resin slide function body that clamps the horizontal flange of the rail so as to be movable back and forth and moves between the front and rear protrusions provided on the fixed side rail; and a lower surface of the horizontal flange of the movable side rail of the slide function body; A vehicle, etc., comprising a roller rotatably fitted into a through hole formed at the front and rear ends of a portion sandwiched between the bottom surfaces of the fixed side rail, and having a diameter slightly larger than the depth of the through hole. seat.