JPH1134681A - Fixation structure of spherical part of a shift lever - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive fixation structure of a spherical part of a shift lever by which the spherical part is stably fixed and the size of the outer diameter of the spherical part can reliably be controlled. SOLUTION: A shift lever 1 comprising a spherical part 2 which becomes a swing supporting point and is installed in a prescribed position is constituted of two half-divided type hemi-spherical members 5, 6 produced by dividing the spherical part 2 into halves and recessed grooves 5a, 5b to be fitted on the outer circumferential face of the shift lever 1 are formed in the inside faces of the hemi-spherical members 5, 6 and projected parts 5b, 6n to be pressure- inserted into through holes 4 formed in the shift lever 1 are projected on the opposite to each other in the inside faces of the respective recessed grooves. The hemi-spherical members 5, 6 are fixed in the shift lever 1 by pressure- inserting the projected parts 5b, 6b into the through holes 4 until the tip end faces of the projected parts are butted against each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sphere fixing structure for a shift lever used in a transmission or a transfer.

[0002]

2. Description of the Related Art Conventionally, a floor shift type shift lever has a knob provided at an upper end of the shift lever, a spherical portion provided below the shift lever, and the spherical portion is swingably supported by a ball seat provided on a vehicle body. It has a structure. As the structure of the above-mentioned sphere part, the one formed integrally with the shift lever by forging, the one made of a resin sphere outsert molded on the shift lever (Japanese Utility Model Application Laid-Open No. 60-65819), the insertion of a spherical member through the shift lever, Fixed with pins etc.
No. 41134).

[0003]

However, the forged structure has a drawback that the manufacturing cost is high, and the outsert-formed resin has a molding die corresponding to the change of the shift lever shape. There is a disadvantage that it is necessary to make a new one, which leads to an increase in cost. In addition, a structure in which a spherical member is inserted into the shift lever can be manufactured relatively inexpensively, but since it is necessary to press-fit a pin so as not to protrude from the spherical member, there is a problem that it takes time to assemble the pin. Further, if the thickness of the shift lever varies, there is a problem that the spherical member rattles against the shift lever.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an inexpensive shift lever spherical body fixing structure capable of stably fixing the spherical body and ensuring reliable dimensional control of the outer diameter of the boss.

[0005]

In order to achieve the above object, the present invention relates to a shift lever provided with a sphere portion serving as a swing fulcrum at a predetermined portion, wherein the sphere portion is divided into two half-type hemispheres. A concave groove is formed on the inner surface of the hemispherical member to be fitted on the outer peripheral surface of the shift lever, and a protrusion protruding in the axial direction of the shift lever is formed on the inner surface of the concave groove. The shift lever has a through-hole formed in a direction perpendicular to the axis, and the hemispherical member is fixed to the shift lever by press-fitting the protrusion into the through-hole to a position where the end surfaces of the protrusion contact each other. It is.

When the hemispherical member is fitted and fixed to the outer peripheral surface of the shift lever, if the dimensional control is performed on the outer peripheral surface of the shift lever, the outer diameter of the spherical portion varies due to the outer diameter tolerance of the shift lever. High outer diameter accuracy cannot be obtained. On the other hand, in the present invention, since the dimensional control is performed by aligning the tips of the protrusions protruding from the hemispherical member, the dimensional control can be performed only with the hemispherical member, and the influence of the outer diameter tolerance of the shift lever is reduced. I do not receive. Further, since the projection of the hemispherical member is fixed by being pressed into the through hole of the shift lever, the play between the hemispherical member and the shift lever can be easily eliminated. Moreover, unlike the case where a pin is pressed in from the outside, there is no need to consider the protrusion of the pin,
Assembly becomes easy.

[0007]

FIG. 1 shows an example of a shift lever device applied to a manual transmission. The shift lever 1 has a spherical portion 2 provided near a lower end portion supported by a ball seat 10 so as to be swingable, and is swingable in a front-back (shift) direction and a left-right (select) direction. Shift lever 1 is the floor 1 of the vehicle body
1, a manual operation knob 3 is fixed to an upper end of the shift lever 1. A dust boot 12 is interposed between the shift lever 1 and the vehicle body floor 11. The lower end of the shift lever 1 is rotatably connected to the rear end of the control rod 13 via a pin 14, and the control rod 13 extends forward and is connected to an operation mechanism of a transmission (not shown). In addition, ball seat 1
Reference numeral 0 is fixed to the rear end of the extension rod 15 by welding or the like. The extension rod 15 extends toward the front of the vehicle body, and the front end of the extension rod 15 is fixed to the case of the transmission. For this reason, even if the transmission case moves due to the engine vibration, the ball seat 10 also moves in synchronization with the movement, so that the shift lever 1 can be prevented from moving in the shift or select direction without permission.

FIGS. 2 and 3 show the structure of the spherical portion 2 of the shift lever 1. FIG. In the fixed part of the spherical part 2 of the shift lever 1,
A through hole 4 is formed in a direction perpendicular to the axis. Spherical part 2
Is formed of two half-type semi-spherical members 5 and 6 integrally formed of resin, and semi-cylindrical concave grooves fitted on the outer peripheral surface of the shift lever 1 are formed on the inner surfaces of the semi-spherical members 5 and 6. 5a, 6a
Are formed continuously in the vertical direction. Furthermore, the concave groove 5
Projections 5b, 6b are integrally formed on the inner surfaces of a, 6a in opposing directions. The protrusions 5b and 6b of this embodiment are formed in a tapered shape so as to be able to be pressed into the through hole 4 of the shift lever 1, but need not necessarily be tapered.

The length of the projections 5b, 6b is determined by the outer surfaces of the hemispherical members 5, 6 when the two hemispherical members 5, 6 are combined and the tip surfaces of the projections 5b, 6b are brought into contact with each other. Is set so that a sphere having a predetermined outer diameter is formed. Therefore, a predetermined gap d is formed between the inner surfaces of the hemispherical members 5 and 6 (see FIG. 3).

In order to fix the hemispherical members 5 and 6 having the above configuration to the shift lever 1, the hemispherical members 5 and 6 are combined in the facing direction with the shift lever 1 interposed therebetween. At this time,
First, the projections 5b, 6b of the hemispherical members 5, 6 are press-fitted into the through hole 4 from both sides, and when the distal end surfaces of the projections 5b, 6b abut against each other, the concave grooves 5a, 6a are shifted into the shift lever 1. Almost fits the outer surface of Thus, the protrusions 5b, 6b
Is press-fitted into the through hole 4 of the shift lever 1, so that the play of both is eliminated.

FIG. 4 shows a second embodiment of the present invention. In the first embodiment, the opposing surfaces of the hemispherical members 5 and 6 are flat surfaces, but in the second embodiment, the opposing surfaces of the hemispherical members 5 and 6 are provided with concave and convex portions 5c and 6c that can engage with each other. Things. Note that the same parts are denoted by the same reference numerals, and description thereof will be omitted. In this embodiment, the engagement of the concave and convex portions 5c and 6c prevents lateral displacement of the hemispherical members 5 and 6, thereby forming a high strength spherical portion. If the concave portions 5c, 6c and the convex portions 5d, 6d are provided in each of the hemispherical members 5, 6, the hemispherical members 5, 6 can be made symmetrical, and there is an advantage that the molding cost can be reduced.

FIG. 5 shows a third embodiment of the present invention. In this embodiment, the projections 5b and 6b are formed by insert molding a metal pin. That is, the protrusion 5
Since a load is applied to the b and 6b when the shift lever 1 is operated, the strength is required. However, if the protrusions 5b and 6b are formed by metal pins as in the third embodiment, the protrusions may be broken. Can be reliably prevented.

In the above embodiment, one projection is provided on each hemispherical member, but two or more projections may be provided.
Further, the projection does not need to be in the form of a pin, but may be in the form of a plate. Further, the shift lever of the present invention is not limited to a rod-type shift operation device, and is of course applicable to a cable-type shift operation device.

[0014]

As is apparent from the above description, according to the present invention, the protrusion of the half-split type hemispherical member is press-fitted into the through hole of the shift lever, and the concave groove of the hemispherical member is formed. Since the two hemispherical members are fixed to the shift lever by being fitted to the outer peripheral surface of the shift lever, the positioning of the hemispherical member is determined by aligning the tips of the protrusions, and the outer diameter tolerance of the spherical body can be reduced. . The play between the shift lever and the hemispherical member is eliminated by press-fitting the protrusion into the through hole. Therefore, a shift lever having a good shift feeling can be obtained. Further, since the structure is simple, the assembling is easy, and the hemispherical member requires only small components, the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall structural view of a shift lever device according to the present invention.

FIG. 2 is an exploded perspective view of a spherical portion of the shift lever of FIG.

FIG. 3 is a sectional view of a spherical portion of the shift lever of FIG. 1;

FIG. 4 is a sectional view of a second embodiment of the hemispherical member according to the present invention.

FIG. 5 is a sectional view of a third embodiment of the hemispherical member according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 shift lever 2 spherical body 4 through hole 5, 6 hemispherical member 5 a, 6 a concave groove 5 b, 6 b projection

Claims (1)

[Claims] 1. A shift lever provided with a spherical portion serving as a swing fulcrum at a predetermined portion, wherein said spherical portion comprises two half-shaped hemispherical members, and a shift lever is provided on an inner surface of said semispherical member. A concave groove is formed on the outer peripheral surface of the shift lever, and a projection protruding in the axial direction of the shift lever is formed on the inner surface of the concave groove so as to face the shift groove. A through hole is formed in the shift lever in a direction perpendicular to the axis. The semi-spherical member is fixed to the shift lever by press-fitting the protruding portion into the through hole to a position where the tip surfaces of the protruding portions contact each other, thereby fixing the spherical portion of the shift lever.