JPH069021B2 - How to support the operating lever - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of supporting an actuating lever for pivotally attaching the actuating lever to a substrate.

[Conventional technology]

Conventionally, as a method of pivotally attaching the actuating lever to the substrate, for example, as shown in FIG. 5, in the shaft hole (B1) of the actuating lever (B) pivotally attached to the substrate (A), It is longer in the axial direction than the plate thickness (t) of the operating lever (B), and the diametrically expanded part (C3) formed between the flange part (C1) and the support part (C2) is rotatably inserted. Then, when the tip of the support portion (C2) of the pivot shaft (C) is caulked on the back surface of the substrate (A) to pivotally attach the operating lever (B) to the substrate (A),
Seat (D) that is the part that supports the pivot (C) in the board (A)
By projecting a predetermined amount from one side surface (A1) of the board (A), and pressing the portion around the pivot axis (C) of the operating lever (B) to this seat (D), A predetermined gap is formed between the side surface (A1) and the side surface (B2) of the operating lever (B) facing the side surface (A1), and the flange portion (C1) of the pivot shaft (C) and the operating lever (B) are The actuating lever (B) is seated by installing a wave washer (E) made of a spring material that applies an urging force in the axial direction around the expanded portion (C3) between
There is one that is pressed upward (D) so that the actuating lever (B) does not unintentionally rattle in the axial direction.

Further, as another method, as shown in FIG.
Instead of the wave washer (E) shown in the figure, replace the resin washer (F) made of synthetic resin with the flange (C) of the pivot (C).
There is one interposed between 1) and the turning lever (B).

Further, as shown in FIG. 7, the shaft hole (B
A protrusion (B3) that protrudes toward the side surface (A1) of the board (A) is provided around (1), and when the operating lever (B) rotates, this protrusion (B3)
It is generally known that the actuating lever (B) can be smoothly rotated by sliding the 3) on the side surface (A1) of the substrate (A).

[Problems to be Solved by the Invention]

However, in the method shown in FIGS. 5 and 6, the pivoting portion of the actuating lever (B) has a wave washer.
(E), because it is supported by the elastic force of the resin washer (F),
For example, when the actuating lever (B) is operated, if a force is applied to the actuating lever (B) to move it sideways, the wave washer (E) and resin washer (F) will elastically deform and the actuating lever (B) will be deformed.
(B) may move in the pivotal portion, and the movement may be amplified as it moves away from the pivotal axis (C), impairing the smooth operation feeling of the operating lever (B).

Further, in the method shown in FIG. 7, the plate thickness (t) of the operating lever (B), the axial length of the expanded diameter portion (C3) of the pivot shaft (C), and the protrusion (B
If the dimensional accuracy of each part such as the protrusion amount of 3) is sufficiently controlled, the protrusion (B3) slides against the side surface (A1) of the substrate (A) with a predetermined force, and the operating lever (B) Although the axial movement of is restricted, the working end does not move in the axial direction unnecessarily, but if there is a slight deviation in the dimensional accuracy of each part, the protrusion (B3) will cause the protrusion (B3) to move to the side of the board (A) ( A1) does not come into contact with or hits too hard, causing the operating lever (B) to pivot (C).
It is extremely difficult to obtain a set operating feeling because the upper and lower parts of the expanded diameter part (C3) rattle up and down to make an abnormal noise and the operation becomes too heavy. Especially the operating lever
It is extremely difficult to manage the plate thickness tolerance of (B),
There is a problem that interferes with work efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for supporting an actuating lever that solves various conventional problems described above.

[Means for solving problems]

To achieve the above object, the method of the present invention is such that, when the actuating lever is pivotally attached to the base plate, one of the facing surfaces of the base plate and the actuating lever is plastically deformable and protrudes toward the other. A tongue piece is provided in advance, and when the actuating lever is pivotally attached to the substrate, the tongue piece is brought into contact with the other facing surface, and until the distance between the two facing surfaces reaches a predetermined value. Is pressed toward the substrate to plastically deform the tongue portion.

[Action]

When the actuating lever is pivotally attached to the base plate, the amount of protrusion of the plastically deformed tongue portion substantially coincides with the predetermined gap between the facing surfaces of the base plate and the actuating lever. It does not rattle and is plastically deformed, and its tongue part that is stable and rigid at that position suppresses vertical movement, and the operating end of the operating lever moves or tilts unnecessarily in the axial direction of the pivot axis. There is nothing to do.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

It should be noted that the drawings show an embodiment in which the present invention is applied to an operation lever of a vehicle seat slide rail device, and FIG. 1 shows a front view of a main part of the seat slide rail device.

(1) is a lower rail fixed to an automobile floor (not shown), (2) is an upper rail slidably fitted to the lower rail (1), (3) is a substrate of the upper rail (2) (4) An actuating lever that forms an operating lever on which the base is pivotally attached by a pivot (5), and an engaging portion that can be engaged with and disengaged from a locking hole (not shown) formed in the side surface of the lower rail (1). (6), and an operation handle (not shown) is formed at the end. By operating this operating handle to rotate the operating lever (3), the engaging portion (6) is disengaged from the locking hole, and the upper rail (2) slides with respect to the lower rail (1). be able to.

The substrate (4) is higher than one side (4a) as shown in FIG.
(h) A circular support hole (4c) is formed in the center of the protruding seat portion (4b).

The actuating lever (3) is formed of a metal plate and is recessed (3) with a depth (h ₁ ) recessed from the side surface (3a) facing the side surface (4a) of the substrate (4).
A shaft hole (3c) having a diameter larger than that of the support hole (4c) is formed in the center of b).

On the outer peripheral edge of the actuating lever (3) around the shaft hole (3c), a plurality of tongue pieces (3a) protruding from the side surface (3a) toward the substrate (4) side and directed in the radial direction ( 7) is integrally formed. The tongue piece (7) has a thin portion (7a) formed at the base to facilitate plastic deformation, and a protrusion (7b) is formed on the lower surface of the tip to form a side surface (4a) of the substrate (4). It is designed to slide smoothly with.

The relationship between the seat portion (4b) of the substrate (4) and the recess (3b) of the operating lever (3) is that height (h)> depth (h ₁ ) and the side surface of the operating lever (3) ( 3a) is not directly in sliding contact with the side surface (4a) of the substrate (4).

The tongue portion (7) is formed in the step of processing the operating lever (3) by press molding, and this protrusion amount (a) causes the operating lever (3) to move to the seat portion (4b). Side of substrate (4) when pivoted
It is formed to be larger than the gap (hh ₁ ) formed between the side surface (3a) of the operating lever (3) and the side surface (3a) of the operating lever (3).

The pivot (5) is the flange (5a), the shaft hole (3c) of the turning lever (3).
A diametrically expanded portion (5b) that is rotatably fitted in and a support portion (5c) that is fitted into a support hole (4c) of the substrate (4) are integrally formed.

The axial length (l) of the expanded portion (5b) of the pivot (5) is the operating lever.
Optimally, it is the same as the plate thickness (t) of (3), but in consideration of the plate thickness tolerance, it is set to be slightly larger than the plate thickness (t).

Next, a method for pivotally attaching the actuating lever (3) to the substrate (4) will be described.

Actuating lever for expanding part (5b) and supporting part (5c) of pivot (5) respectively
Fit in the shaft hole (3c) of (3) and the support hole (4c) of the board (4), and bring the tongue piece (7) into contact with the side surface (4a) of the board (4). As shown in FIG. 3, the outer periphery of the recess (3b) of the actuating lever (3) and the outer periphery of the seat portion (4b) of the substrate (4) are connected between the pair of pressing bodies (8) and (8) of the pressing machine. Until the bottom of the recess (3b) of the actuating lever (3) lightly touches the seat (4b) of the board (4).
Tighten (8). Then, the tongue piece (7) undergoes plastic deformation from the thin portion (7a) at the base thereof. In that state, the support hole (4c)
Caulking machine (9) at the tip of the supporting part (5c) of the more protruding Axis (5)
Then, the pivot shaft (5) is fixed to the substrate (4). Note that the plastic deformation work of the tongue piece (7) by the pressing machine is performed by the caulking machine (9).
It may be carried out after the axis (7) has been swaged by means of.

Although the tongue piece (7) temporarily deforms to the position shown in FIG. 3, the tongue piece (7) springs back slightly to the protruding direction by removing the pressing force of the pressing machine,
Substantially, it stabilizes at the position shown in FIG. As a result, when the operating lever (3) is pivotally attached to the base plate (4), the protrusion amount of the tongue piece (7) is the side surface (4a) of the base plate (4) and the operating lever (3) facing it. The gap between the side surface (3a) of the substrate ((hh ₁ ) + (lt)), and the gap between the tongue (7) and the side surface (3a) of the substrate (4) should be almost zero. You can

In this case, if the tongue piece (7) is merely elastically deformed without plastic deformation, the side surface (4a) of the substrate (4)
There is a possibility that it will come into strong contact with, and a large resistance force will act on the rotation of the actuating lever (3), making rotation impossible.

However, as described above, the tongue piece (7) is plastically deformed, and the tongue piece (7) is made to the substrate (4) by a slight spring back.
If it is brought into contact with the side surface (4a) of the operating lever (3), the actuating lever (3) does not rattle and the rotation thereof does not become heavy.

Also, due to the plate thickness tolerance of the operating lever (3), the operating lever (3)
Even if there is a backlash between the plate thickness (t) and the expanded diameter part (5b) of the pivot (5), the actuating lever (3) is attached in the axial direction by the springback of the tongue (7). Since it is urged and pressed by the flange portion (5a) with an appropriate force, there is no rattling in the axial direction.

In this way, the actuating lever (3) pivotally attached to the substrate (4)
Is pivotally attached without rattling in the axial direction, and the plastically deformed rigid tongue (7) suppresses the movement in the axial direction. Even if you apply force by operating the operation handle at the end, the tongue
As long as (7) is not deformed, the operating end of the rotating lever (3) does not inadvertently move or tilt in the axial direction.

In the above embodiment, the tongue piece (7) is provided on the operating lever (3) side, but instead of this, the tongue piece (7) is provided on the substrate (4) side. Can also obtain the same effect. In this case, the substrate (4) is made of a metal plate.

〔The invention's effect〕

As described above, according to the present invention, when the actuating lever is pivotally attached to the substrate, the tongue piece is plastically deformed so as to absorb the dimensional variation of each part and brought into contact with the substrate. The operating lever can operate smoothly without rattling, and the operating end does not unnecessarily move or tilt in the axial direction of the pivot shaft.

[Brief description of drawings]

1 to 4 show an embodiment in which the present invention is applied to a seat slide rail. FIG. 1 is a front view of a main part of the seat slide rail, and FIG. 1 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a sectional view taken along the line AA when the operating lever is attached, FIG. 4 is a sectional view taken along the line AA after the operating lever is attached, and FIGS. Shows a cross-sectional view of a main part of each conventional example which is different from each other. (3) Actuating lever, (3a) Side surface (3b) Recess, (3c) Shaft hole (4) Board, (4a) Side surface (4b) Seat, (4c) Support hole (5) Axis, (5b) Expanded diameter Part (7) Tongue part, (7a) Projection

Claims (1)

[Claims] 1. When the actuation lever is pivotally attached to the base plate, a plastically deformable tongue portion projecting toward the other is provided in advance on one of the facing surfaces of the base plate and the actuation lever. When the actuating lever is pivotally attached to the board, the tongue piece is brought into contact with the other facing surface, and the actuating lever is pressed toward the board until the distance between the facing surfaces reaches a predetermined value, A method of supporting an operating lever, comprising plastically deforming the tongue piece.