JPH0143313Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a slide rail for a seat incorporating a seatbelt anchorage, and aims to simplify the mechanism and strengthen the locking strength.

Seatbelt anchorages used to be attached to the car body, but recently there are slide rails and other seatbelt anchors that are built into the seat. When the anchorage is built into the seat, there is an advantage that the anchorage is always located close to the occupant even when the seat moves back and forth or up and down. However, since an impact load of 1.5 tons is applied to the anchorage in the event of a collision, the conventional open-section slide rails cannot withstand the load and the upper and lower rails separate and open. Therefore, the slide rail on the side to which the anchorage is attached is provided with a mechanism to prevent vertical separation. An example will be explained with reference to FIG. 1 showing the side surface of the sheet and FIG. 2 showing the AA cross section thereof. In these figures, 1
is a peeling prevention band, which has a substantially U-shaped cross section, surrounds the lower rail 2, and is fixed to the upper rail 3 so as to form a closed cross section. This prevents the slide rail from opening even if an impact load is applied via the anchorage (not shown). In addition, 4 is a roller, 5 is a ball, 6 is a lower rail fixing member,
7 is a seat cushion, and 8 is a seat bag.

On the other hand, as is well known, the slide rail is equipped with a mechanism that locks the seat at any position within a range of about 200 mm from front to back. The locking mechanism engages the upper and lower rails via locking pawls, but it is necessary to secure a plate to the rails to ensure engagement and to receive the load during locking.

By the way, when a seatbelt anchorage is incorporated into a seat, conventionally the separation prevention bands of the upper and lower rails and the slide locking mechanism are separately provided. Therefore, there was a problem that the number of mechanical parts increased. In particular, the anti-peeling band and the plate of the locking mechanism are rigid members that have similar functions of receiving loads, but they have been used in duplicate.

Therefore, in view of the above-mentioned prior art, the present invention aims to simplify the slide rail mechanism of a seat incorporating a seatbelt anchorage and to strengthen the locking strength. This purpose is
Conventionally, the upper and lower separation prevention bands of the slide rail and the locking mechanism were separate, but this can be achieved by integrating them. That is, the configuration of the seat slide rail according to the present invention includes a lower rail fixed to the vehicle body, an upper rail slidably provided on the lower rail and capable of moving the seat fixed to the upper surface in the front and back direction, and the upper rail. an anchorage attached to the seatbelt and connected to the seatbelt to receive an impact load applied to the seatbelt; and an anchorage fixed to the upper rail in order to prevent vertical separation of the lower rail and the upper rail due to the impact load applied to the anchorage; In a seat slide rail comprising a peeling prevention band that surrounds the lower rail and forms a closed cross section with the top rail, the peeling prevention band is fixed to the lower rail and moves integrally with the top rail at a predetermined interval in a moving direction. a lock member having a plurality of lock holes drilled therein; and a lock provided in the peel prevention band and fitted into any of the plurality of lock holes to lock the relative positions of the lower rail and the upper rail at a desired position. It is characterized by having a claw. The present invention will be described below with reference to the drawings.

FIG. 3 shows a seat slide rail according to an embodiment of the present invention, FIG. 4 shows its BB cross section, and FIG. 5 shows an example of the lock pawl operating mechanism. In these figures, the same members as those in FIGS. 1 and 2 are given the same reference numerals to avoid redundant explanation.

In FIG. 3, reference numeral 9 represents a seatbelt anchorage, and a member 10 fixed to the upper rail 3
is installed on. This Atsupareru 3 has a 4th
As shown in the figure, the peel prevention band 1 is fixed so as to form a closed cross section. Reference numeral 11 denotes a pawl constituting a locking mechanism, which is fixed to a shaft 12 provided on the peel prevention band 1, and can rotate substantially orthogonally to the rail direction. By fitting this lock pawl 11 into the hole 1a of the peeling prevention band 1 and one of the lock holes 13a of the many holes drilled in the longitudinal direction of the lock member 13 attached to the lower rail 2, the position of the slide rail can be adjusted. Lock. In this embodiment, the tip of the lock pawl 11 is divided into three parts at the same pitch as the lock holes 13a of the lock member 13, and three holes 1a of the peel prevention band 1 are also formed at the same pitch. The lock pawl 11 is biased by a spring in the direction of fitting into the hole 1a and the lock hole 13a, and is unlocked by pulling the lever 14 fixed to the shaft 12 to the right with a wire 15. An example of the operating mechanism of the lock pawl 11 will be explained with reference to FIG. 5. The wire 15 is routed to the side of the slide rail that does not have an anchor, and is locked to a lever 16 there. An end 16a of this lever 16 protrudes to the side of the seat, and by pulling the lever protruding end 16a upward on the seat side as shown by the two-dot chain line, the lock is released and the lever can be slid.
When released, the lock pawl 11 is biased by the spring and fitted into both the hole 1a and the lock hole 13a at a desired slide position, thereby locking the slide rail.
The lever 16 is a member 1 fixed to the top rail 17.
It is rotatably attached to a support member 19 further protruding from 8. In FIG. 5, reference numeral 20 indicates a lower rail, but since the rollers and balls are the same as in FIG. 4, their illustration is omitted.

Although an embodiment has been described below, the present invention has a structure in which a peeling prevention band that prevents separation between the upper rail and the lower rail is fixed to the upper rail, and a plurality of lock holes are drilled at predetermined intervals along the movable direction of this peeling prevention band. By fixing the provided lock member to the lower rail, and providing a lock pawl on the peeling prevention band that is inserted into one of these lock holes to lock the relative positions of both the upper and lower rails at a desired position, both rails can be fixed to the lower rail. The relative movement of the upper rail is regulated by engagement between the locking member fixed to the lower rail and the locking pawl provided on the peel-preventing band of the upper rail.

That is, in the present invention, the upper rail or the lower rail itself does not have a structure in which a lock hole or the like is provided to restrict the relative movement of both rails in the sliding direction, and the impact load is directly received as a concentrated load at the lock hole or the like. The structure achieves this purpose by restricting the relative movement between the peeling prevention band fixed to the upper rail and the locking member fixed to the lower rail by means of a lock pawl.

Therefore, in the present invention, there is no need to increase the plate thickness of the upper rail and lower rail in order to receive the impact load, or to add reinforcing members to both rails. Just by setting the strength of the locking pawl as appropriate,
A desired lock strength can be obtained. Therefore, it is possible to share the set of upper rail and lower rail that supports the left side of the bottom surface of the seat with the set of top rail and lower rail that supports the right side of the bottom surface of the seat, which has the effect of contributing to cost reduction. .

[Brief explanation of the drawing]

Fig. 1 is a side view of the seat, Fig. 2 is a sectional view taken along the line A-A in Fig. 1 to explain the peeling prevention band, and Fig. 3 is a side view of the slide rail showing an embodiment of the present invention. , FIG. 4 is a cross-sectional view taken along the line B--B in FIG. 3, and FIG. 5 is a cross-sectional view showing an example of the lock pawl operating mechanism. In the drawing, 1 is a peeling prevention band, 1a is a hole, 2 is a lower rail, 3 is an upper rail, 9 is an anchorage,
11 is a lock claw, 13 is a lock member, 13a is a lock hole on the lower rail side, 15 is an operating wire, 1
6a is the protruding end of the operating lever.

Claims (1)

[Scope of Claim for Utility Model Registration] A lower rail fixed to the vehicle body side, an upper rail slidably provided on the lower rail and capable of moving a seat fixed to the upper surface in the front and back direction,
An anchor is attached to the upper rail and connected to the seat belt, and receives an impact load applied to the seat belt, and is fixed to the upper rail in order to prevent vertical separation of the lower rail and the upper rail due to the impact load applied to the anchorage. and a peeling prevention band surrounding the lower rail and forming a closed cross section with the top rail, in a moving direction of the peeling prevention band fixed to the lower rail and movable integrally with the top rail. a locking member having a plurality of locking holes drilled at predetermined intervals; and a locking member provided in the peel prevention band and fitted into any of the plurality of locking holes to lock the relative positions of the lower rail and the upper rail at a desired position. A seat slide rail characterized by having a locking claw.