JPH033067Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a seat slide device, and more particularly, to a seat slide device that has a rattling prevention property and a smooth sliding property when seated.

(Prior Art) Conventionally, automobile seats have been designed so that the seating position can be adjusted according to the physique and preferences of the driver.
A seat slide device is used, which consists of a lower rail fixed to the vehicle body floor and an upper rail fixed to the lower part of the seat, and these rails are fitted to be slidable in the longitudinal direction of the vehicle body.

In this type of seat slide device, a plurality of rollers are interposed between both rails in order to slide both rails smoothly.

However, since the outer diameters of these rollers are set to be slightly smaller than the maximum opposing dimension between both rails, each roller is loosely fitted when the seat is vacant.

Therefore, when the slide device is vibrated while the vehicle is running, the rollers roll within both rails and become misaligned, causing the rollers to shift to one side. Furthermore, this deviation phenomenon tends to occur even during slide adjustment.

In this way, when the roller deviation phenomenon occurs,
Sliding characteristics when adjusting the seating position deteriorate, making adjustment difficult and causing rattling noises during adjustment.

Therefore, by holding the roller with a roller holding member, the movement of the roller is prevented, the phenomenon of roller deviation is prevented, the sliding characteristics of the slide device are improved, and rattling noise is reduced during adjustment. A slide device configured to suppress this occurrence is proposed in Japanese Utility Model Publication No. 54-38654.

In this prior art, since the roller is held by a holding member, the deviation phenomenon is eliminated, the sliding characteristics are improved, and rattling noise is suppressed during adjustment, but when the seat is empty, The upper rail is slightly raised by the spring force of the holding member, that is, the upper rail is able to move up and down with respect to the lower rail. The lower surface of the upper wall contacts the roller and a seating sound is generated.

Furthermore, if the seated person changes their seating position by changing their sitting posture without sliding the slide device, an unbalanced load in the front and rear direction will act on the upper rail, and as a result, the side where the larger load is applied will be affected. In this case, the upper rail is lowered by the above-mentioned amount of uplift, causing a see-saw movement that seals up the opposite side, and an abnormal noise is generated.

Furthermore, since the curved parts formed on the top and bottom of the roller holding member are constantly in pressure contact with the top and bottom rails, there are problems such as high sliding resistance and no significant improvement in sliding characteristics can be expected. There is.

(Purpose of the invention) This invention was made to solve the above-mentioned conventional problems, and it ensures that the contact between the roller and the sliding member is maintained at all times regardless of whether the seat is occupied or empty. In addition, even if an unbalanced load acts on the sliding member in the front-back direction, it prevents the seesaw movement of the sliding member and prevents the generation of abnormal noise. Furthermore, it reduces sliding resistance and improves sliding characteristics. It is an object of the present invention to provide a seat slide device that achieves improvements in performance.

(Effect of the invention) In order to achieve the above object, the seat slide device according to this invention has a lower channel fixed to the vehicle body floor and an upper channel channel fixed to the lower part of the seat, which are slidably fitted in the longitudinal direction of the vehicle body. In the combined seat slide device, at least three rollers are pivotally supported on the top channel at intervals in the front-rear direction.

The front and rear rollers are in contact with the upper surface of the lower wall of the lower channel, and the intermediate roller is in contact with the lower surface of the upper wall of the lower channel.

Further, a spring is interposed between the front and rear rollers and the upper wall of the lower channel to bias the upper channel downward via the rollers.

Therefore, the upper channel is supported by the lower channel with the front and rear rollers always in contact with the upper surface of the lower wall of the lower channel, and the intermediate roller always in contact with the lower surface of the upper wall of the lower channel. Vertical movement of the atsupachi channel relative to the lower channel channel is regulated.

Furthermore, even if the seated person changes his or her seating position and an unbalanced load in the front-rear direction is applied to the upper channel, no see-saw movement occurs in the upper channel.

Further, the front and rear rollers roll into contact only with the upper surface of the lower wall of the lower channel, and the intermediate roller only rolls into contact with the lower surface of the upper wall of the lower channel.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

FIG. 1 shows a schematic side view of an automobile seat to which the seat slide device according to the invention is applied.
In the figure, a seat 1 is composed of a seat cushion 1A and a seat back 1B, and is provided so as to be slidable in the front and rear directions with respect to a vehicle body floor 3 via a seat slide device 2.

Seat slide device 2 is seat cushion 1A
It is arranged at two locations in the width direction of the
As shown in the figures (however, only one seat slide device 2 is shown in both figures), a lower channel 2A is fixed to the vehicle body floor 3 (Figure 1).
and the lower part of seat 1, that is, seat cushion 1
It consists of a hot channel 2B fixed to the lower part of A.

As shown in FIG. 4, the lower channel 2A is formed in a C-shaped cross section, and the upper channel 2B is formed in an inverted U-shaped cross section.
The lower channel channel 2A is covered by.

As shown in Figure 2, Atsupachi Channel 2B has
As shown in FIG. The rollers 4B in the intermediate portion are in contact with the upper surface of the lower wall portion 21 of the lower channel 2A, and the rollers 4B in the intermediate portion are in contact with the lower surfaces of the upper wall portion 22 of the lower channel 2A, respectively, as shown in FIG.

That is, the upper channel channel 2B is supported by the lower channel channel 2A via rollers 4A, 4B, and 4C, and both channels 2A and 2B are fitted so as to be relatively slidable in the longitudinal direction of the vehicle body floor 3 (FIG. 1). It has become a state of being.

As shown in FIG. 6, between the front and rear rollers 4A, 4C in FIG. 2 and the upper wall portion 22 of the lower channel 2A, the upper channel 2B is urged downward via the rollers 4A, 4C. A spring 51 is interposed therebetween.

The spring 51 is formed of a thin plate of spring steel into a substantially M-shape, and has both shoulder portions 5A and 5B formed in an arc shape, and the upper wall portion 22 of the lower channel channel 2A.
As shown in FIGS. 7 and 8, detachment prevention pieces 6 are formed in elastic contact with the lower surfaces of the rollers 4A and 4C, and at the lower portions of both ends, as shown in FIGS. 7 and 8.

Thereby, the spring channel 2B is urged downward by the spring force of the spring 51, and the spring 51 is prevented from falling off from the rollers 4A, 4C.

In FIGS. 2 to 4, 7 is a locking mechanism, which is attached to the upper channel 2B, and is always locked by the spring force of the spring 7B.
is engaged and locked into any one of a plurality of lock holes 9 formed in the lower channel 2A through a through hole 8 formed in the upper channel 2B.

The lock piece 7A and the lock hole 9 can be unlocked by operating the slide adjustment lever 11 (Fig. 1) connected to the tip of the wire 10 against the spring force of the spring 7B. This is obtained by rotating the lock piece 7A and removing it from the lock hole 9.

In the above configuration, if the position of the seat 1 shown in FIG. 1 is to be moved in the longitudinal direction of the vehicle body floor 3 according to the driver's preference or physique, the position of the seat 1 shown in FIG. Pull the wire 10 shown in Figure 4 to release the lock piece 7A of the lock mechanism 7.
By rotating clockwise against the spring force of the spring 7B and releasing it from the lock hole 9 of the lower channel 2A, the upper channel 2B slides back and forth using the lower channel 2A as a guide. It becomes possible to move, and the slide adjustment is made.

Further, by returning the slide adjustment operating lever 11 (Fig. 1) after the slide adjustment described above, the lock piece 7A is fitted into the lock hole 9, and the seat 1 (Fig. 1) can be positioned at a desired position. can.

In this way, even if the sheet 1 is slid in the front and back direction, the three rollers 4A, 4B, 4C in FIG.
are pivotally supported with a distance l in the longitudinal direction from the hot channel channel 2B, so the rollers 4A,
Since no deviation phenomenon occurs in 4B and 4C, rattling noise does not occur during slide adjustment.

Further, as shown in FIGS. 4 to 6, the front and rear rollers 4A and 4C are on the upper surface of the lower wall portion 21 of the lower channel 2A, and as shown in FIG. 5, the intermediate roller 4B is on the lower channel 2A. The upper channel 2B is supported by the lower channel 2A while being in contact with the lower surface of the upper wall 22, and between the front and rear rollers 4A, 4C and the lower surface of the upper wall 22 of the lower channel 2A. , the roller 4
Since a spring 51 is interposed to urge the hot channel channel 2B downward via A and 4C,
Regardless of whether seat 1 (Fig. 1) is empty or occupied, the lower channel 2A and rollers 4A, 4
Contact with B and 4C is always ensured.

That is, since no vertical gap is formed between the lower channel 2A and the upper channel 2B, no seating noise is generated when the occupant is seated.

In addition, even if the seated person changes the sitting position without sliding the slide device 2, the seating position changes and an unbalanced load in the front and back direction acts on the uppatch channel 2B. Since there is no seesaw movement, the occurrence of abnormal noise is suppressed.

Furthermore, when adjusting the slide, the roller 4
A, 4C are on the upper surface of the lower wall part 21 of the lower channel 2A, and the intermediate roller 4B is on the lower channel 2A.
Since they only come into rolling contact with the lower surface of the upper wall portion 22, the sliding resistance is limited to a low level.

In the above embodiment, three rollers 4A, 4B, 4C are pivotally supported on the front and back channel 2B with an interval l in the front and back direction, but between the front and rear rollers 4A, 4B, 4C, Even if a plurality of rollers are arranged in the lower channel 2A and the plurality of rollers are brought into contact with the lower surface of the upper wall 22 of the lower channel 2A, the plurality of rollers can also be arranged in a staggered manner on the lower wall 21 of the lower channel 2A.
The upper surface and the lower surface of the upper wall portion 22 may be brought into contact with each other.

(Effects of the invention) As explained above, according to this invention, the contact state between the roller and the lower channel is always ensured regardless of whether the seat is seated or empty, thereby preventing the occurrence of seating noise. In addition, even if an unbalanced load is applied to the front and back direction on the front and back channels, the front and back channels do not see-saw, so it is possible to prevent the generation of abnormal noises, reduce sliding resistance, and improve sliding characteristics.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of an automobile seat to which the seat slide device according to the present invention is applied, Fig. 2 is a side view of the slide device, Fig. 3 is a plan view of the same, and Fig. 4 is the - line in Fig. 2. 5 is a sectional view taken along the same line, FIG. 6 is a side view showing the relationship between the roller and the spring, FIG. 7 is a sectional view taken along the - line in FIG. 6, and FIG. is a sectional view taken along the same line. 1... Seat, 2... Seat slide device, 2
A...Lower channel, 2B...Top channel, 4A, 4B, 4C...Roller, 21...Lower wall, 22...Upper wall, 51...Spring, l...
…interval.

Claims (1)

[Scope of utility model registration request] In a seat slide device in which a lower channel fixed to the vehicle body floor and a top channel channel fixed to the lower part of the seat are fitted together so as to be slidable in the longitudinal direction of the vehicle body, at least three rollers are attached to the top channel in the longitudinal direction. The front and rear rollers are in contact with the upper surface of the lower wall of the lower channel, and the intermediate roller is in contact with the lower surface of the upper wall of the lower channel. . A seat slide device, characterized in that a spring is interposed between the front and rear rollers and the upper wall of the lower channel to bias the upper channel downward via the roller.