JPH0723065Y2 - Support structure for rod - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention inserts the tip end of a piece-shaped material to be a supporting member into an inlet of a circumferential winding groove of a curl molding die, By fixing the base end portion of the piece-shaped material and pushing the curling mold toward the base end portion of the piece-shaped material, the piece-shaped material is curled along the winding groove. The present invention relates to a rod support structure in which the curl portion rotatably supports the rod.

"Prior Art" Conventional rod support structures include, for example, those shown in Figs. 13 and 14.

That is, the operation rod 4 for adjusting the front-back position is rotatably supported by the seat-side lay 2 of the seat slide device 1 through the support member 3, and the support member 3 is a strip-shaped flat plate member 5 and its plate. The width is constant from the base end to the tip, and the tip of the flat plate member 5 is rounded to form the curl portion 6.

To form the curl portion 6, a curl forming die having a circumferential winding groove is used, the base end of the flat plate material 5 is fixed, and the front end of the flat plate material 5 is inserted into the winding groove. And the inlet of the winding groove is brought closer to the base end of the flat plate member 5. As a result, the leading end of the flat plate material 5 is wound along the winding groove to form the curl portion 6.

[Problems to be solved by the invention] However, in such a conventional rod support structure, a buckling load acts on the flat plate member 5 when the entrance of the winding groove is approached toward the base end of the flat plate member 5. Since the flat plate material 5 used for the support member 3 has a uniform cross section from the tip to the base end and has a constant bending rigidity, a portion 1/4 from the base end on the fixed side is bent backward. There is a problem that the point may be deformed into an arc shape, and in that case, the shape of the curl portion 6 does not fall within the allowable error, and the operation rod 4 does not rotate smoothly.

The present invention has been made in view of such a conventional problem, and the shape of the curl portion is kept within an allowable error so as not to cause buckling, and the rod can be smoothly rotated. It is intended to provide a member.

[Means for Solving the Problems] The gist of the present invention for achieving such an object is that the tip end of a piece of material serving as a supporting member is wound around a curling mold in a circumferential shape. Insert into the groove entrance, fix the base end of the flaky material, push the curling mold toward the base end of the flaky material, and roll up the flaky material. In a rod support structure in which a curl portion is formed along a groove, and a rod is inserted into the curl portion to rotatably support the piece-shaped material, the width is linear from the base end portion to the tip end portion. The present invention resides in a rod support structure characterized in that it is formed so as to gradually decrease.

[Operation] The base end of the piece-shaped material serving as the support member is fixed, and the tip end of the piece-shaped material is directed to the entrance of the winding groove of the curl molding die.

Move the curling mold so that the tip of the piece-shaped material is inserted into the entrance of the winding groove, and further push the entrance of the winding groove toward the base end of the piece-shaped material. The tip of the material having a relatively small section modulus is relatively easily rolled to form a curl.

At this time, a compressive load is generated in the longitudinal direction of the piece-shaped material to shrink the piece-shaped material and to bend the base end portion of the piece-shaped material in a direction perpendicular to the longitudinal direction. However, the base end portion of the piece-shaped material does not largely bend due to its relatively large section modulus and high bending rigidity, and therefore does not buckle.

[Examples] Various examples of the present invention will be described below with reference to the drawings. In the various embodiments, the same parts are designated by the same reference numerals, and the duplicated description will be omitted.

1 to 11 show a first embodiment of the present invention.

FIG. 2 shows a seat slide device 10a. The seat slide device 10a includes a pair of rail units 10. The rail unit 10 includes a vehicle body side rail 11 and a vehicle body side rail.
It is composed of a seat-side rail 12 which is fitted to the seat 11 so as to be movable back and forth and supports the seat.

A locking plate 14 having a plurality of locking holes 13 continuously arranged in the front-rear direction is fixedly mounted on the rail 11 on the vehicle body side. On the top plate portion 15 of the rail 12 on the seat side, the base end portions 16a, 1 of the support members 16, 17 are provided.
7a is fixed, and the operation rods 20 extending in the front-rear direction along the seat-side rails 12 are attached to the front ends 16b and 17b of the support members 16 and 17, respectively.
Is rotatably supported.

The operating rod 20 has a locking hole when the operating rod 20 rotates.
A latch member (30) that can be engaged and disengaged is fixedly installed on (13).

As shown in FIGS. 1 and 3 to 11, the supporting member
A curl portion 18 on which the operation rod 20 is rotatably fitted is formed on a tip portion 16b of the 16. A piece-shaped material having a constant thickness is used for the support member 16, and from the base end portion of the piece-shaped material, that is, the base end portion 16a of the support member 16, to the tip portion of the piece-shaped material, that is, the tip portion of the support member 16. The plate width is gradually reduced. A tapered triangular hole 19 is formed in the tip end of the piece-shaped material toward the base end.

That is, the base end portion 16a of the support member 16 has a relatively large section modulus, and the tip end portion 16b has a relatively small section modulus.

Next, the operation will be described.

In FIG. 4, a base end portion 16a of a support member 16 is fixed to a top plate portion 15 of a rail 12 on the seat side, and a tip end portion 16b thereof extends straight to the side. From the original position on the extended direction line, the curl molding die 40 moves in the processing direction parallel to that direction and approaches the tip 16b of the support member 16, and the tip 16b of the support member 16 curls. Winding groove 4 of mold 40 for
It is plugged into the entrance 42 of 1.

In this state, the tip portion 16b of the support member 16 still remains straight as shown in FIG.

In this state, as shown in FIG. 5, when the curl molding die 40 is further moved in the processing direction, the tip portion 16b having a relatively small section modulus is relatively easily deformed along the winding groove 41, As shown in FIG. 9, it is slightly wound.

At this time, a compressive load is generated in the longitudinal direction of the support member 16 to shrink the support member 16 and the base end portion 16a of the support member 16
To bend in a direction perpendicular to the longitudinal direction.

As shown in FIG. 6, when the curl forming die 40 is further moved in the processing direction, the tip portion 16a of the support member 16 is rolled into the winding groove 4
It deforms along 1 and is wound about half a turn as shown in FIG.

As shown in FIG. 7, when the curl forming die 40 is further moved in the processing direction so that the winding center of the winding groove 41 coincides with the rod center of the operation rod 20, the supporting member is also changed.
The tip portion 16a of 16 is deformed along the winding groove 41, and as shown in FIG.

Also during this time, a compressive load is generated in the longitudinal direction of the support member 16,
The support member 16 is contracted, and the base end portion 16 of the support member 16 is contracted.
Attempt to bend a in a direction perpendicular to the longitudinal direction.
However, since the base end portion 16a of the support member 16 has a relatively large section modulus and high bending rigidity, it does not largely bend, and therefore does not buckle.

After the curl portion 18 is molded, the curl molding die 40 is relatively moved in the winding axis direction of the winding groove 41 to form the curl portion.
18 is pulled out from the winding groove 41. After the curl portion 18 is extracted, the curl molding die 40 is returned to its original position, and is then prepared for processing.

The tip 17b of the support member 17 is similarly curled. Thereby, the center line passing through the winding center of the curl portion 18 of the support member 16 and the winding center of the curl portion of the support member 17 coincides with the rod center axis line of the operation rod 20.

Then, when the operation rod 20 is inserted into the curl portion 18 of the support member 16 and the curl portion of the support member 17, the operation rod 20 is smoothly and rotatably supported by the support members 16 and 17.

FIG. 12 shows a second embodiment of the present invention.

In the present embodiment, a protrusion 59 for contacting with the base end side of the curl portion 58 is provided at the tip of the curl portion 58 of the support member 56. Accordingly, the curl portion 58 can be formed by properly winding the tip end portion of the support member 56 without excess or deficiency.

In the above embodiment, as a method of gradually reducing the section modulus from the base end portion 16a of the support member 16 to the tip end portion 16b,
Although the plate width is gradually reduced, the plate thickness may be gradually reduced.

According to the support member 16 of the operation rod 20 according to the embodiment,
Since the triangular hole 19 whose width gradually increases toward the tip is formed in the tip 16b of the support member 16, the tip can be more easily formed.
16b can be processed.

[Advantage of the Invention] According to the rod support structure of the present invention, the width of the piece-shaped material to be the supporting member is gradually reduced linearly from the base end to the tip, and the sectional modulus is gradually decreased. Therefore, insert the tip of the piece of material into the inlet of the curling groove of the curl molding die, and push the inlet of the winding groove toward the base of the piece of material. It easily rolls along the groove to form a curl, and since the bending rigidity of the base end is high, the base end may not buckle significantly even if a compressive force in the longitudinal direction is applied to the support member, causing it to buckle. Therefore, the curl portion fits within the tolerance, and the curl portion can support the rod so that the rod can be smoothly rotated.

[Brief description of drawings]

1 to 11 show a first embodiment of the present invention,
FIG. 1 is a plan view of a supporting member, FIG. 2 is an overall perspective view of a seat slide device, FIG. 3 is a view in the direction of arrow III of FIG. 1, and FIGS. 4 to 7 are explanatory views of curl molding, respectively. From Figure 8
FIG. 11 is a perspective view showing a deformed state by curl molding step by step, FIG. 12 shows a second embodiment of the present invention, and an arrow view of the main part of the supporting member, FIG. 13 and FIG. Shows a conventional example, FIG. 13 is a plan view of a supporting member, and FIG. 14 is FIG.
It is a XIV-XIV sectional view taken on the line. 10 …… Rail unit 10a …… Seat slide device 11 …… Vehicle side rail 12 …… Seat side rail 16,17,56 …… Supporting member 16a, 17a …… Base end 16b, 17b …… Front end 18 ...... Curl section 20 ...... Operating rod 30 ...... Latch 40 ...... Curl molding die 41 ...... Rolling groove 42 ...... Inlet

Front page continuation (72) Inventor Mikio Honma 1-14-7 Maruyama, Isogo-ku, Yokohama-shi, Kanagawa Oi Manufacturing Co., Ltd. (56) Bibliography Sho 48-32011

Claims (1)

[Scope of utility model registration request] 1. A tip end of a piece-shaped material to be a supporting member is inserted into an inlet of a circumferential winding groove of a curl molding die,
Fix the base end of the flaky material, push the curling mold toward the base end of the flaky material, and curl the flaky material along the winding groove. In a rod support structure in which a rod is inserted into the curl portion to rotatably support the curl portion, the piece-shaped material is formed so that the width thereof gradually decreases linearly from the base end portion to the tip end portion. A support structure for a rod characterized in that