JPS6121835A - Car seat slide rail structure - Google Patents

Abstract

PURPOSE:To ensure wide space for arranging the seat by providing the seat belt anchor section onto the upper rail while the engaging section onto the lower rail then transmitting the load of seatbelt to be applied onto the anchor section through the lower rail to the floor. CONSTITUTION:When assembling the seat slide rail S to the chassis, the front and rear foot sections 24, 25 are fixed through bolts and nuts to the floor 12. Since the lower frame 21 is fixed to the lower rail 20, it is not required to fix the lock plate corresponding with the lower rail 20 to the side sill inner panel 14 as conventional thus to ensure a gap 8 between the seat slide rail S and the panel 14. While upon application of load onto the seatbelt 8 under quick brake, the anchor section 33 is pulled to move the upper frame 31 upward thus to engage the sections 23 and 34 of the lower and upper frames 21 and 31 and to transmit the load through the lower rail to the floor.

Description

[Detailed Description of the Invention] [Industrial Application Field] The invention relates to the structure of a vehicle seat slide rail, and particularly to a vehicle seat provided with a safety belt anchor portion to prevent deformation of the slide rail. Regarding the structure of the slide rail.

[Conventional technology]

Conventionally, as shown in FIGS. 2 and 3, the structure of a vehicle seat slide rail equipped with a safety belt anchor part is such that a seat is attached to an upper rail 3 via an L-shaped bracket 4, and the seat is attached to the upper rail 3 via an L-shaped bracket 4. An anchor member 9 is attached to the mold bracket 4, and the ends of the seat belt 8 such as the seat belt buckle 6 and the seat belt metal fitting 1 are fixed thereto, while the lower rail 10, which is slidably engaged with the upper rail 3, is attached to the leg portion 11. fixed to the floor 12 through the
Further, the end portion 9a of the anchor member 9 is formed into a serrated shape with the tip facing upward, and a retaining hole 13a is provided which engages with the end portion 9a.
There is one in which a lock plate 13 having a lock plate 13 is fixed to a side sill inner panel 14 and a floor tunnel 1T (for example, Utility Model Application No. 54-165427). Then, the end 9a of the anchor portion 9 and the locking hole 13a of the lock plate 13 are connected to each other.
are not normally engaged, but when a load is applied to the seatbelt 8 during sudden braking or a collision, and when the anchor member 9 is pulled upward by the seatbelt buckle 6 or seatbelt metal fitting γ, the end portion 9a and The engagement holes 13a are engaged with each other, and the load is transmitted from the opening plate 13 to the floor 12 via the side sill inner panel 14 and the floor tunnel 1T. In this case, almost no load is transmitted to the engaging portions of the rails 3, 10, so that the functions of the rails 3, 10 are not impaired. - In FIGS. 2 and 3, the reference numeral 15 is a side sill outer panel fixed to the side sill inner panel 14, and the reference numeral 16 is a door.

[Problem that the invention seeks to solve]

However, in the structure of such a conventional vehicle seat slide rail, the lock plate 13 is provided with a retaining hole 13a into which the end portion 9a of the anchor portion 9 is fitted when the anchor portion 9 moves upward. is the side sill inner panel 14 of the vehicle body.
Since the lock plate 13 is attached to the floor tunnel 11, the lock plate 13 protrudes toward the seat 5, which limits the width of the seat 5 accordingly. Unfortunately, since the lock plate 13 is present for electric seat operation switches, etc., the installation space is restricted accordingly.

The present invention has been made in view of the above problems, and its purpose is to secure a wide seat arrangement space without impairing the function of transmitting the load of the seat belt to the floor. The purpose of the present invention is to make it possible to install a wide seat, and to easily arrange various devices in the space on both sides of the seat.

[Means for solving problems]

The means includes a lower rail that is fixed to the floor via the legs, and an upper rail that slidably engages with the lower rail and supports the seat, and the upper rail is provided with an anchor portion for the seat belt. On the other hand, the lower rail is provided with an engaging portion that engages with the anchor portion and restrains the upward movement of the anchor portion, so that the load of the seat belt applied to the anchor portion is transmitted to the floor via the lower rail. Based on the vehicle seat slide rail structure.

[Effect]

During sudden braking or a collision, a load is applied from the seat belt to the anchor section, and the anchor section is pulled upward, but the anchor section engages with the engagement section of the lower rail, and the load is transferred through the lower rail. and transmitted to the floor.

Further, since it is not necessary to add several parts to the side sill inner panel, etc., it is possible to increase the space for arranging the seat.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

In the embodiments shown in FIGS. 1 and 4 to 6, the basic configuration of the seat slide rail S is as follows:
The upper rail 30e is slidably engaged with the upper rail 30e, and the lower frame 21, the rear leg portion 24, and the front leg portion 25 are fixed to the lower rail 20, and the lower frame 31 is fixed to the lower rail 30.

The lower frame 21 is the bottom wall 2 of the lower rail 20.
It is fixed to 0a with rivets 22, and its outer end rises upward and is bent into an inverted U shape to form an engaging portion 23. As particularly shown in FIG. 7, the rear leg portion 24 consists of a first wall portion 24a and a second wall portion 24b that are joined at right angles, and the upper portion of the first wall portion 24a A support flange 26 fixed to the lower wall 21a of the lower frame 21 is formed on the upper part of the second wall part 24b, and a side flange 26 as a fixed part fixed to the side wall 21b of the lower frame 21 is formed on the upper part of the second wall part 24b. 2T is formed and
A fixing flange 28 fixed to the floor 12 is formed at the lower part of the first wall portion 24a.

The rear leg portion 24 is fixed to the lower rail 20 by fastening its support flange 26 to the lower frame 21 with the rivet 22 and by fixing the side flange 27 to the side wall 21b of the lower frame 21 by welding or the like. ing. Further, the rear leg portion 24 is not limited to the above-mentioned one. For example, as shown in FIG.
2 is provided, and the support flange 51 is spot welded to the lower wall 21a of the lower frame 210.
The side edge portion of the support flange 51 may be welded to the lower edge of the side wall 21b and the welded portion may be used as the fixed portion 53.

Further, as shown in FIG. 9, the upper and lower parts of the leg plate 54 are bent to form a support flange 55 and a fixed flange 5, respectively.
6, the support flange 55 is further bent to form a side flange 51 as a fixed part, and the support flange 55 is spot welded to the lower wall 21a of the lower frame 21, while the side flange 51 is It may be welded to the side wall 21b of the lower frame 21. Further, the front leg portion 25 is formed of a fixed flange 25a fixed to the lower wall 21a of the lower frame 21 and a fixed flange 25b extending from the fixed flange 25b and fixed to the floor 12.

On the other hand, the upper frame 31 is fixed along the outside of the annular rail 30 via a mounting bracket 32, and the rear side of the annular frame 31 is attached to an anchor portion 3.
3, and the seatbelt buckle of the seatbelt 8 and the seatbelt metal fittings 7 are attached to the anchor portion 33 via the port 62. The lower side of the above-mentioned anonymous frame 31 is a substantially U-shaped retaining end 34.
When the upper frame 31 is about to move upward, the engaging portion 2 of the lower frame 21
3 and its movement is restricted.

Furthermore, a comb-like uneven portion 36 is formed on the inside of the lower frame 21, and a rod 38 of a jet nozzle 37 is rotatably attached to the mounting bracket 32 via a bracket 40. A retaining piece 39 attached to the rod 38 engages with and disengages from the uneven portion 36 as the seat handle 37 rotates. Then, the lower rail 20 and the upper rail 30 are set in the locked and unlocked states by engaging and disengaging the engaging piece 39. Further, an arm 41 is attached inwardly to the rear of the mounting bracket 32, while an inwardly protruding portion 42 is formed on the front leg 24, and a space between the arm 41 and the protruding portion 42 is formed on the front leg 24. A spring 43 is stretched across the hook in a tensioned state, and when both rails 20 and 30 are unlocked, the upper rail 30 is pulled in the longitudinal direction of the vehicle body and the seat 5 on the upper rail 30 is set in the retracted position. ing.

Note that reference numerals 44 and 45 in FIG. 6 are bearings and rollers interposed between the upper rail 30 and the lower rail 20.

Therefore, according to the seat slide rail according to this embodiment, when the seat slide rail S is assembled to the vehicle body, as shown in FIG. 1 and FIG.
．． 25 to the floor 12 using bolts 48 and nuts 49. In this case, since the lower frame 21 is attached to the lower rail 20, there is no need to attach a lock plate that attaches to the lower rail 20 to the side sill inner panel 14 (floor tongue) as in the conventional case. A gap δ between the seat slide rail S and the side sill inner panel 14 (floor tunnel) is ensured. In order to secure the above-mentioned gap δ, the seat slide rail S can be installed closer to the side inner panel 14, so that the seat can be installed with a correspondingly wider width.

In this state, when attempting to operate the seat 5, rotate the seat handle 37 to disengage the engagement piece 39 from the uneven portion 36 of the mounting bracket 32, and move the upper rail 30 onto the lower rail 20. Just slide it. In this case, the engaging portion 23 of the lower frame 21 and the retaining end portion 34 of the upper frame 31 are not engaged with each other, as shown in FIG. 6, so the upper rail 30 moves without any problem.

Next, during sudden braking or a collision, a load is applied to the seatbelt 8, the anchor portion 33 is pulled by the seatbelt buckle and the seatbelt metal fitting 7, and the upper frame 31 tends to move upward. At this time, the engaging portion 23 of the lower frame 21 and the retaining end portion 34 of the upper frame 31 engage with each other, so that the load is transferred to the floor 1 through the lower frame 21 and the front and rear legs 24 and 25.
Therefore, no unreasonable force is applied to the upper rail 30 or the lower rail 20, and both rails 2
0.30 bending and damage are prevented. Therefore, even in the event of an emergency during a collision, the evacuation of the occupants will not be hindered. Further, in this case, the anchor portion 33 is located at the rear of the upper frame 31, and the rear leg portion 24 is fixed to the lower wall 21a of the lower frame 21 at its support flange 26 with a rivet 22, and Since the side flange 27 is also fixed to the side wall 21b of the lower frame 21 by welding or the like, force is also transmitted from the side flange 27 to the rear leg 24 via the lower frame 21. The load is not concentrated at one point but is transmitted in a distributed manner, preventing the rear leg portion 24 from separating from the lower frame 21, and effectively transmitting the load to the floor 12.

In the above embodiment, the rear leg portion 24 that supports the lower rail 20 has a fixed portion fixed to the side wall 21b of the lower frame 21, but this is not necessarily limited to this, and as shown in FIG. As shown, it is only necessary to provide a support flange 60 that is welded to the bottom wall 21a of the lower frame 21, and there is no particular problem even if the support flange 60 does not have a fixing portion to be fixed to the side wall 21b. Further, in the above embodiment, the membrane 25 is not provided with a fixed part, but this is not necessarily the case; a fixed part fixed to the side wall of the lower rail 20 may be provided, and changes may be made as appropriate. There is no problem,
In this case, the load of the seat belt is more reliably transmitted to the floor. Furthermore, in the above embodiment, the lower frame 21 is fixed to the bottom wall 20a of the lower rail 20 with rivets 22, but it is not necessarily limited to this. For example, it may be formed integrally with the lower rail 20, and The membrane shape may be changed. In addition, upper frame 31
It may be formed integrally with the upper rail 30 as well. Furthermore, in the above embodiment, the lower frame 21
The engaging portion 23 of the upper frame 31 and the engaging stepped portion 34 of the upper frame 31 are formed in an inverted U-shape and a U-shape, respectively, so that they mesh and engage, but the invention is not necessarily limited to this. In short, it can be formed into various shapes without any problem.
Any type of anchor may be used as long as it engages to restrict upward movement of the anchor when a load is applied to the seat belt.

〔Effect of the invention〕

As described above, according to the vehicle seat slide rail structure according to the present invention, the load of the seat belt applied to the anchor portion is transmitted to the floor via the lower rail without affecting the upper rail and the lower rail. Therefore, there is no need to provide the above-mentioned load transmitting member on the vehicle body panel near the side of the seat slide rail as in the conventional case, and a wider space for seat arrangement can be secured accordingly. Therefore, for example, it becomes possible to install a wide seat, and it becomes possible to easily arrange various devices on both sides of the seat.

If the leg that supports the lower rail is provided with a fixed part that is fixed to the side of the lower rail, the connection between the lower rail and the leg becomes strong, so it can withstand the load from the seat belt. This has the effect that the lower rail and the leg are prevented from coming apart, and the load is reliably transmitted to the floor.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a vehicle seat slide rail structure according to an embodiment of the present invention, FIG. 2 is a perspective view showing an example of a conventional dual-purpose seat slide rail structure, and FIG.
A side view of the mounting portion of the seat slide rail as seen from the arrow direction (■) in the figure, FIGS. 4 and 5 are a plan view and a front view showing a vehicle seat slide rail structure according to an embodiment of the present invention,
FIG. 6 is an installation diagram seen from the arrow ■ in FIG.
FIG. 7 is a perspective view showing the attached state of the rear leg, and FIGS. 8 to 10 are perspective views showing other structures of the rear leg. S°°° Seat slide rail 3, 30... Upper rail 9... Anchor material 1
0.20...Lower rail 11.24.25...Leg portion 12...Floor 14...Length side/na panel 21...Lower frame 23...Engagement part 31...
- Upper frame 33... Anchor part 34... Retaining end part 27, 57... Side flange (fixing part) 53...
Fixed part

Claims (2)

[Claims] (1) It has a lower rail that is fixed to the floor via the legs and an upper rail that slidably engages with the lower rail and supports the seat, and the upper rail is provided with a seatbelt anchor part, and the lower rail is provided with the seatbelt anchor part. An engaging portion is provided that engages with the anchor portion and restricts upward movement of the anchor portion, and the load of the seat belt applied to the anchor portion is transmitted to the floor via the lower rail. Vehicle seat slide rail structure. (2) Claim 1, wherein the leg portion has a fixing portion fixed to a side portion of the lower rail.
The vehicle seat slide rail structure described in Section 1.