JP2531293Y2 - Connecting rod cover structure for automotive seats - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an improvement of a connecting rod cover structure for an automobile seat.

(Prior Art) Conventionally, as a vehicle seat, as shown in FIG. 3 and FIG. 4 (a), gear parts (not shown) of lower knuckles 2, 2 attached to left and right of a seat cushion 1, The gears (not shown) of the upper knuckles 4, 4 attached to the left and right of the seat back 3 are meshed with each other, and the operating shafts of the left and right gears are connected by a rod 5. Those equipped with a so-called townmel knuckle reclining device have been put into practical use.

The seat back 3 is, as shown in FIG.
A pad 7 is applied to the seat back frame 6, and the pad 7 is covered with a skin 8. The connecting rod 5 is inserted through the pad 7.

However, when the seat back 3 is reclined, the connecting rod 5 is in direct contact with the pad 7,
Contact noise is generated.

Therefore, as shown in FIGS. 5 (a) and 5 (b), the cover plate 9 is fixed to the seat back frame 6 and the connecting rod 5 is inserted therein, or as shown in FIGS. As shown in FIG. 6 (b), a cylindrical outer rod 10 is fixed to the upper knuckles 4, 4 and the connecting rod 5 is inserted into the outer knuckles 4, 4 in practical use.

According to this connecting rod cover structure, generation of abnormal noise of the connecting rod 5 and the pad 7 is eliminated.

(Problems to be Solved by the Invention) However, in the former structure, it is necessary to fix the cover plate 9 to the seat back frame 6 by welding or the like.
It is necessary to fix the wires 4 and 4 by welding or the like, and there has been a problem that the number of assembling steps increases and the cost increases.

In addition, there is a problem that the workability of assembling the connecting rod 5 is also poor.

The present invention has been made to solve the above problems.
It is an object of the present invention to provide a connecting rod cover structure in which an assembling man-hour is reduced and an assembling workability is improved in the above-described vehicle seat.

(Means for Solving the Problems) For this reason, in the present invention, the gear portion of the lower knuckle attached to the left and right sides of the seat cushion and the gear portion of the upper knuckle attached to the left and right sides of the seat back are meshed with each other. An automotive seat formed by connecting the operating shafts of the respective gear portions with each other with a rod, having a length substantially equal to the entire length of the rod, and made of a synthetic resin formed with a slit capable of being fitted into the rod from the radial direction. And a plurality of ridges that are in line contact with the outer periphery of the rod are formed in the rod cover.

(Functions and Effects of the Invention) According to the present invention, the assembly can be completed with a single touch simply by fitting the synthetic resin rod cover into the connecting rod from the radial direction. Since workability is also improved, cost can be reduced.

In addition, since the outer surface of the rod cover is in full contact with the pad, the rod can rotate together with the pad due to frictional resistance, but since the connecting rod is only in line contact with the rod cover with a plurality of protrusions, the frictional resistance is small. The rod cover rotates smoothly around the connecting rod, and almost no contact noise is generated.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Note that the same configuration and operation as those of the prior art shown in FIG.

As shown in FIG. 1 and FIG.
A rod cover 12 made of synthetic resin and having a length substantially equal to the total length of the rod is provided.

The rod cover 12 is a rectangular type having a substantially U-shaped cross section, and has a slit 12a formed on one side thereof so as to be fitted into the connecting rod 5 from the radial direction.

In the rod cover 12, a fitting hole 12b of the connecting rod 5 which is continuous with the slit 12a is formed, and an inner surface of the fitting hole 12b extends in the longitudinal direction of the rod cover 12 so that the connecting rod 5 Conditions 12c, ..., 12c that are in line contact with the outer circumference of
Are formed integrally at equal angular intervals.

At the entrance of the slit 12a, claw portions 12d, 12d for preventing the rod cover 12 from coming off from the connecting rod 5 are integrally formed.

In addition, as shown in FIG. 2 (b), a round type rod cover 12 'having a substantially C-shaped cross section may be used.

With the above configuration, the rod cover 12 (12 ')
The rod cover 12 (12 ') can be attached to the connecting rod 5 with one touch only by fitting the connecting rod 5 from the slit 12a into the connecting rod 5 in the radial direction (see the arrow a in FIG. 1).

When the pad 7 rotates together with the seat back (3) in the reclining operation of the seat back (3),
Since the rectangular rod cover 12 is prevented from rotating by the pad 7, the contact noise between the rod cover 12 and the pad 7 does not occur.

Also, since the connecting rod 5 is in line contact with each of the rod covers 12, 12 'by a plurality of ridges 12c,..., 12c, the frictional resistance is small and the rod covers 12, 12' can smoothly move around the connecting rod 5. And the connecting rod 5 and each rod cover 12,1
The contact noise with 2 ′ hardly occurs.

Japanese Utility Model Laid-Open No. 50248/1990 proposes a structure in which an annular member is provided on a seat frame or the like to prevent squeak noise between the seat frame or the like and the pad. , The specific configuration is completely different in that the annular member is short, that there is no ridge, that the annular member is not in contact with the seat frame and the like.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a connecting rod cover structure for an automobile seat according to the present invention, FIG. 2 (a) is a cross-sectional view of a rod cover, FIG. 2 (b) is a cross-sectional view of a modified rod cover,
FIG. 3 is a perspective view of an automobile seat, FIG. 4 (a) is an exploded perspective view of a main part of a conventional automobile seat having a connecting rod, and FIG. 4 (b) is a line AA in FIG. FIG. 5 (a) is an exploded perspective view of a relevant part of an automobile seat, and FIG. 5 (b) is a sectional view taken along line A- of FIG.
FIG. 5 (a) is a sectional view of a main part of the seat corresponding to line A, FIG. 6 (a) is an exploded perspective view of a main part of an automobile seat, and FIG. 6 (b) is AA of FIG. FIG. 7 is a cross-sectional view of a main part of the sheet of FIG. 6A corresponding to a line. 2 ... Roan knuckle, 4 ... Upper knuckle, 5 ... Connecting rod, 7 ... Pad, 12,12 '... Rod cover, 12a ... Slit, 12c ... Protrusion.

Claims (1)

(57) [Scope of request for utility model registration] A gear portion of a lower knuckle attached to the left and right sides of a seat cushion and a gear portion of an upper knuckle attached to the left and right sides of a seat back are meshed with each other, and the operating shafts of the left and right gear portions are connected to a rod. A synthetic resin rod cover having a length substantially equal to the entire length of the rod and having a slit formed in the rod so as to be fitted in the rod from the radial direction. Within
A connecting rod cover structure for an automobile seat, wherein a plurality of ridges are formed on the outer periphery of the rod to make line contact.