JPH031655Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a lever pivot device for a shift lever device with an improved lever support structure.

``Prior Art'' Conventionally, the structure of the rotation support part of a lever that rotates in conjunction with the rotation operation of a shift lever in an automatic vehicle, etc., is a cylindrical part that protrudes from a bracket fixed to the body of the vehicle. An annular wave washer and a washer slide are fitted into the cylindrical part, and the lever is secured to the cylindrical part using a fixing device such as a bolt, and the elastic force of the wave washer creates an appropriate rotational resistance on the lever, making it easier for the vehicle to move. This is designed to dampen the vibration of the lever while driving.

However, in the above configuration, when an operating force is applied to the shift lever in its rotational direction, the lever tilts slightly from its parallel position to the bracket, which also tilts the washer slide that is in contact with the lever, causing it to become a wave washer. An excessive load may be applied, and in this case, the wave washer may be compressed beyond its fatigue limit, resulting in fatigue failure. Furthermore, if a large force is applied to the shift lever in a direction perpendicular to the rotational direction, the wave washer may be compressed beyond its compression limit, and there is a risk that the elastic function of the wave washer will be lost.

``Purpose of the invention'' The invention was developed in view of the above circumstances, and its purpose is to prevent fatigue failure of a spring washer, such as a wave washer, which has an elastic force in the axial direction even when repeated operating force is applied in the direction of rotation of the lever. Furthermore, even if a force is applied to the lever in a direction different from the direction in which it rotates, the elastic function of the spring washer will not be lost, and the lever will always have an appropriate degree of rotational resistance. Another object of the present invention is to provide a lever pivot device for a shift lever device that can provide good vibration damping of the lever.

``Summary of the invention'' This invention provides a cylindrical part on a bracket fixed to the body of an automobile, and bolts and bolts are attached to the outer periphery of this cylindrical part.
A lever secured by a nut or the like is rotatably provided, and an annular axial elastic member is installed around the outer periphery of the cylindrical portion by positioning the lever between the end surface of the lever and the side surface of the bracket facing the lever. A spring washer and a washer slide having force are inserted, and a convex portion is provided on the side surface of the washer slide or the bracket to regulate the distance between the washer slide and the bracket and to regulate the amount of compression of the spring washer to a predetermined value. The spring washer is characterized in that it is provided with a portion to prevent an excessive load from being applied to the spring washer even if the lever is tilted relative to the bracket of the lever.

"Embodiment" A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 denotes a metal plate, to which a metal bracket 2 is fixed, for example, by welding. A shift lever 3 has a cylindrical body 4 fixed to its base end by welding or the like, and a shift knob 5 is attached to its upper end. Reference numeral 6 denotes a stepped bolt for rotatably supporting the shift lever 3 on the bracket 2, the large diameter shaft portion 6a of which is inserted into the through hole 7 formed in the bracket 2, and the small diameter shaft portion 6a of this bolt is inserted into the through hole 7 formed in the bracket 2. A threaded portion 6b passes through a through hole 8 of the bracket 2 and is fixed to the bracket 2 with a nut 10 via a spring washer 9. The cylindrical body 4 of the shift lever 3 is rotatably supported around the outer periphery of the shaft portion 6a of the bolt 6 via plastic bushes 11,11. Reference numeral 12 designates a cooperation lever as a lever having pins 13 and 14 protruding from both upper and lower ends. An insertion hole 16 is bored in the middle part of 12. on the other hand,
Reference numeral 17 denotes a cylindrical portion formed by burring on the side surface of the bracket 2 to have a predetermined outer diameter and a predetermined length, and a spring washer 18 having elastic force in the axial direction, such as a wave washer 18, and a plastic washer 17 are attached to the outer periphery of the cylindrical portion. The washer slides 19 are respectively inserted, and the insertion holes 16 in the intermediate part of the link lever 12 are inserted.
is rotatably inserted around the outer periphery of this cylindrical portion 17 via a plastic bushing 20.
Thus, annular protrusions 21, 21 having the same shape are symmetrically formed on the outer periphery of the washer slide 19, and one protrusion 21 faces the side surface of the bracket 2. The other protruding portion 21 faces the cooperation lever 12 . Also, Bushu 20
A flange 20b is integrally formed at one end of a cylindrical shape 20a fitted into the insertion hole 16, and the other end of the flange 20b is inserted into the side of the linking lever 12 so that the washer slide 19 is inserted into the insertion hole 16.
The washer slide 1 is projected by a predetermined dimension in the direction of
It is close to the end face of 9. Reference numeral 22 denotes a bolt inserted into the cylindrical portion 17 from the distal end thereof with the spring washer 23 and flat washer 24 inserted into the lower part of the neck, and a nut 25 is screwed and secured to the distal end of this bolt. The link lever 12 is positioned and held on the outer periphery of the cylindrical portion 17 by these bolts 22 and nuts 25.

Reference numeral 26 denotes an indicator housing fixed to the plate 1 by screws, and the intermediate portion of the shift lever 3 passes through a through hole 27 provided at the center of the indicator housing 26 and projects outward, that is, upward. ing.

According to the above configuration, when the shift knob 5 is operated in the front-rear direction at right angles to the plane of the paper in FIG. is rotated back and forth about the cylindrical portion 17 as a rotational fulcrum, and the automatic transmission is operated via a wire (not shown) connected to the pin 14. At this time, since there is a positional shift (offset) between the end of the link lever 12 on the pin 13 side and the insertion hole 16, moment force is generated and when the link lever 12 is rotated by operating the shift lever 3, the insertion hole 16 is offset. Twisting occurs in the linkage lever 12 around the hole 16, and as a result, the wave washer tends to be compressed more than a predetermined compression amount (within the fatigue limit), but the convex strip 21 of the washer slide 19 By coming into contact with the side surface of the wave washer 18, excessive compression of the wave washer 18 is prevented, and the amount of compression is regulated within a predetermined value. Further, when the shift lever 3 is operated with a large force in a direction different from the front-rear direction, for example, in the direction of arrow A, the linkage lever 12 is displaced in the direction of the arrow A via the pin 13, so that the linkage lever 12 has a cylindrical portion. 17 as a fulcrum, and the lower part of the washer slide 19 in FIG. 1, which is in contact with this cooperation lever 12, moves in the direction of arrow B. As the washer slide 19 moves, the wave washer 18 attempts to be compressed by more than a predetermined compression amount, but the compression amount is regulated to a predetermined value. As a result, the wave washer 18 does not suffer from fatigue failure or lose its elastic function, and therefore can always produce an appropriate amount of rotational resistance in the linked lever 12, and also provides excellent vibration damping of the lever. can. In addition, protrusions 2 are provided on both sides of the washer slide 19.
1 and 21 are formed symmetrically, and the bush 20
Since the end face of the cylinder 20a projects a predetermined amount from the linkage lever 12 and is close to the washer slide 19, there is no risk of reverse assembly during assembly, and excessive deformation of the washer slide 19 is prevented. can do.

Further, even if the convex portion 21 of the washer slide 19 comes into contact with the side surface of the bracket 2 by operating the lever 12 at an angle with respect to the bracket 2, the contact area is extremely small.
The sliding resistance of the washer slide 19 against the bracket 2 can be suppressed. Therefore, lever 1
Since the rotational resistance of lever 2 does not increase, the operability of lever 12 does not deteriorate. Furthermore, since a washer slide 19 is interposed between the wave washer 18 and the lever 12,
Even when the wave washer 18 comes into strong contact with the washer slide 19, the sliding resistance between the wave washer 18 and the washer slide 19 is small, and as a result, the rotational resistance of the lever 12 is kept at an appropriate level. can be kept.

FIG. 3 shows a second embodiment of the present invention.
The convex strip 21 on the cooperation lever 12 side is omitted, and the other end of the cylindrical body 28a of the bush 28 is made substantially flush with the end surface of the cooperation lever 12, which has substantially the same effect as the first embodiment described above. is obtained.

FIG. 4 shows a third embodiment of the present invention, in which a washer slide 29 is provided with a plurality of partially protruding protrusions 30 instead of the protruding strips 21 shown in FIG. , the same effect as that of the second embodiment is achieved.

FIG. 5 shows a fourth embodiment of the present invention, in which the protrusions 21, 21 of the first embodiment are omitted, and a plurality of protrusions 32 are provided at positions facing the outer circumference of the washer slide 31. This embodiment provides the same effects as the first embodiment.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can of course be implemented with various modifications, such as being applicable not only to the cooperation lever 12 but also to the support structure of the shift lever 3.

Incidentally, instead of the wave washer 18, a spring washer having elastic force in the axial direction, such as a normal spring washer, may be used.

"Effects of the Invention" As is clear from the above explanation, the present invention employs a spring washer, such as a wave washer and a washer slide, which has an elastic force in the axial direction, in a cylindrical part provided on a bracket fixed to the body of an automobile. In a shift lever device in which a lever is rotatably supported through a lever, the lever is provided protruding from the side surface of the washer slide or the bracket, and the amount of compression of the spring washer is controlled by regulating the distance between the washer slide and the washer slide. Since the protrusion is provided to regulate the rotational speed to a predetermined value, the spring washer will not be compressed beyond the predetermined value even if repeated operating force is applied to the lever in the direction of rotation or a large force is applied to the lever in a direction different from the rotational direction. First, the spring washer does not suffer from fatigue failure or loss of its elastic function, and the lever always produces an appropriate amount of rotational resistance, and the vibration damping of the lever is improved, and the amount of torsion of the lever is This has excellent effects in that it can prevent the increase in size and also improve the feeling.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view of the main part, FIG. 2 is a longitudinal sectional view of the whole, and FIGS. FIG. 5 is a view corresponding to FIG. 1 showing second, third and fourth embodiments of the present invention, respectively. In the drawing, 2 is a bracket, 12 is a cooperation lever (lever), 17 is a cylindrical part, 18 is a wave washer (spring washer), 19 is a washer slide,
21 is a convex part (convex part), 22 is a bolt, 25 is a nut, 29 is a washer slide, 30 is a convex part, 3
1 is a washer slide, and 32 is a convex portion.

Claims (1)

[Scope of utility model registration request] A cylindrical part provided on a bracket fixed to the body of the automobile, a lever rotatably pivoted around the outer periphery of the cylindrical part and secured with bolts, nuts, etc., and an end face of this lever and a corresponding lever. an annular spring washer and washer slide having an elastic force in the axial direction and inserted around the outer periphery of the cylindrical portion and positioned between the side surface of the bracket facing the lever;
a shift lever comprising a convex portion protruding from the side surface of the washer slide or the bracket and regulating the distance between the washer slide and the bracket and regulating the amount of compression of the spring washer to a predetermined value; Lever pivot device of the device.