JPH11301294A - Shift lever device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shift lever device promoting miniaturization and weight reduction of parts and improving parts assembling workability. SOLUTION: A shift lever device 1 provided with a shift lever 7 for controlling an automatic transmission, and a shift lever plate 2 for holding the shift lever 7 rotatably around an axis A1, is provided with two protruding parts 11 formed at the shift lever 7 and protruded in reverse directions to each other along the axis A1; two bushes 12 separately fitted to the outer peripheries of two protruding parts 11; and two holding holes 4 formed at the shift lever plate 2 so that two bushes 12 are separately fitted thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lever device for manually shifting a transmission mounted on a vehicle.

[0002]

2. Description of the Related Art Generally, a transmission for a vehicle is configured so that a manual shift can be performed by operating a shift lever device. On the other hand, in recent years, miniaturization and weight reduction of various parts have been promoted in order to improve the fuel efficiency of an engine mounted on a vehicle. In the case of a shift lever device, the parts are molded by a synthetic resin. Addressing the above situation.

One example of the invention in which the parts of the shift lever device are formed of synthetic resin is disclosed in Japanese Utility Model Laid-Open No. 60-12 / 1985.
No. 6,815, and JP-A-9-183315. In the shift lever device described in each publication, the shift lever is made of a synthetic resin. A tubular portion is formed at the end of the shift lever, and a through hole is formed through the tubular portion in the axial direction.

[0004] A base plate (holding member) for holding the shift lever is provided on the vehicle body side. The base plate is provided with a pair of brackets, and the pair of brackets are formed with holding holes, respectively. Then, by fitting (press-fitting) the shaft member into the through hole and the holding hole, the shift lever is held rotatably about the axis. When the shift lever having the above configuration is operated, the rotation of the shift lever is transmitted to the transmission, and the manual valve of the hydraulic control device operates to perform manual shift.

[0005]

However, in the above-mentioned prior art, the cylinder of the shift lever and the shaft member slide when the shift lever is operated. For this reason,
It was necessary to ensure the strength of the cylindrical portion formed of the synthetic resin, and the radial thickness of the cylindrical portion had to be increased as much as possible. As a result, there has been a problem that reduction in size and weight of the shift lever is hindered. In addition, due to the increase in the thickness of the cylindrical portion, the installation space must be secured, and the layout of components arranged near the shift lever may be restricted.

Further, in the above conventional example, in the assembling process of the shift lever device, after the through hole formed in the cylindrical portion and the two holding holes respectively formed in the pair of brackets are simultaneously positioned, the through hole is formed. And the operation | work which fits a shaft member in two holding holes was performed. For this reason, there is a problem that the work of positioning the holding hole and the through hole is not easy, and the workability of assembling the shift lever device is reduced.

Further, in order to surely transmit the operating force of the shift lever to the transmission in the assembled state of the shift lever device, the shift lever, the pair of brackets and the cylindrical portion are fitted to each other, so that This prevents the members from moving relative to each other in the radial direction of the cylindrical portion. For this reason, the fitting area between the members in the axial direction becomes as long as possible, the load required for fitting the members increases, and there is a problem that the workability of assembling the shift lever device is further reduced. .

[0008] The present invention has been made in view of the above circumstances, it is possible to further promote the miniaturization and weight reduction of each part, and it is possible to improve the workability of assembling each part. It is an object to provide a shift lever device.

[0009]

In order to achieve the above object, the present invention provides a shift lever for controlling a transmission, and a holding member for holding the shift lever rotatably about an axis. And two projections formed on the shift lever and projecting in opposite directions along the axis, and separately fitted on the outer periphery of the two projections. It is characterized by comprising two cylindrical members and two holding holes formed in the holding member and into which the two cylindrical members are separately fitted. The holding hole includes a cutout or a groove opening at one side edge of the holding member, in addition to the hole penetrating the holding member in the thickness direction.

According to the first aspect of the present invention, the two projecting portions are separately attached to the holding holes via the two cylindrical members. For this reason, even when the shift lever is formed of a synthetic resin, the two protruding portions are solid and the strength can be secured, and the dimension (thickness) in the direction perpendicular to the axis of the two protruding portions can be secured. Can be suppressed.

Further, since the two cylindrical members are separately fitted into the two projecting portions, the two projecting portions are positioned one by one with respect to the holding holes, and each projecting portion and each holding hole are positioned. Can be fitted and press-fitted separately. Therefore, the work of positioning the two protrusions and the two holding holes can be easily performed. Furthermore, since the fitting portion on the shift lever side is limited to the two protruding portions, the fitting length of each member in the axial direction is suppressed as much as possible.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, an uneven portion having a different height in a radial direction of the cylindrical member is formed on a fitting surface between the projecting portion and the cylindrical member. It is characterized by being.

According to the second aspect of the present invention, in addition to obtaining the same operation as the first aspect, when the cylindrical member is fitted into the holding hole, the cylindrical member and the holding hole are misaligned in a direction perpendicular to the axis. In this case, the unevenness of the cylindrical member is elastically deformed in the radial direction of the tubular member, thereby absorbing the misalignment between the two.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 2 is a front view showing a schematic configuration of the shift lever device 1 of the present invention, and FIG.
FIG. 3 is a side sectional view taken along line -III. The shift lever device 1 is provided for controlling an automatic transmission (not shown) mounted on a vehicle. This automatic transmission is arranged on the output side of an engine (not shown),
This automatic transmission has a known structure including a gear transmission mechanism having a planetary gear mechanism, a friction engagement device that switches a torque transmission path of the gear transmission mechanism, and a hydraulic control device that controls the operation of the friction engagement device. Are exemplified. And, by the operation of the manual valve of the hydraulic control device, for example,
The L (low) range, the 2 (second) range, the D (drive) range, the N (neutral) range, the R (reverse) range, and the P (parking) range can be switched among each other.

The shift lever device 1 of this embodiment has a so-called floor shift type structure, and a shift lever plate 2 is fixed to a floor (not shown) of the vehicle body. The shift lever plate 2 is integrally formed of a synthetic resin, and a pair of side walls 3 are erected on the shift lever plate 2 in parallel with each other. A notch 4 having the same shape is provided at a position where the pair of side walls 3 face each other.
Are formed respectively. Each notch 4 is opened at one side edge of the shift lever plate 2, and each notch 4
It has a straight portion 5 extending substantially vertically, and a circular portion 6 connected to the lower end of the straight portion 5. Two circular parts 6
Are formed around the same axis A1.

On the other hand, a shift lever 7 for controlling the automatic transmission is integrally formed of synthetic resin, and the shift lever 7 is disposed between the pair of side walls 3. A shift knob 8 is formed at the upper end of the shift lever 7, and a knob button 9 is provided on the shift knob 8. A shaft 9A is connected to a lower portion of the shift knob 8, and the shaft 9A
A substantially triangular plate portion 10 is formed in the lower part of.

At both ends of the plate portion 10, a pair of projecting portions 11 projecting in opposite directions in the axial direction are formed. Width B1 of the pair of protrusions 11 in the horizontal direction
Is set to be narrower than the width C1 of the linear portion 5 of the notch 4. In addition, the front shapes of the pair of protrusions 11 are configured to be substantially square. Further, the inner diameter of the circular portion 6 is set to be larger than the width C1 of the straight portion 5.

A cylindrical bush 12 is fitted and fixed to the circular portion 6 of the cutout 4.
FIG. 4 is a front view of the bush 12, and FIG. 5 is a side view of the bush 12. The bush 12 is integrally formed of a synthetic resin, and the axial length of the bush 12 is
Is set substantially the same as the thickness in the axial direction. On the outer periphery of each bush 12, concave portions 13 and convex portions 14 are alternately arranged along the circumferential direction. That is, the concave portion 13 and the convex portion 14 constitute a so-called external tooth-shaped spline or serration.

A through hole 15 is formed substantially at the center of the bush 12 so as to penetrate the bush 12 in the axial direction. The front shape of the through-hole 15 is substantially rectangular. The outer periphery of the bush 12 having the above configuration is fitted (press-fit) to the circular portion 6 of the cutout 4, and the protruding portion 11 is fitted (press-fit) to the through hole 15 of the bush 12. Therefore, when the shift lever 7 is operated, the shift lever 7 and the bush 12 rotate integrally about the axis A1, and the outer peripheral surface of the bush 12 and the inner surface of the holding hole 6 slide. Grease is held in the recess 13 of the bush 12. An edge formed by the outer peripheral surface and the end surface of the bush 12, that is, an edge on the plate 10 side is provided with a chamfer 16 over the entire circumference.

On the other hand, a plate 17 made of synthetic resin is attached to the shift lever 7 at an intermediate position in the longitudinal direction thereof, substantially perpendicular to the shift lever 7, and an elongated hole 18 is formed at one end of the plate 17. Have been. A mount 19 is formed on the shift lever plate 2, and a cylindrical collar 20 is attached to the mount 19. A cable 21 is inserted inside the collar 20 so as to be movable in its length direction. This cable 21
A lock pin 21A is formed at one end of the lock pin 21A.
Is inserted into the elongated hole 18 and is fixedly fastened by the nut 22. A lever (not shown) is connected to the other end of the cable 22 so that the power of the cable 21 is transmitted to the manual valve of the hydraulic control device via the lever.

Further, a positioning claw 23 is provided at an end of the plate 17 opposite to the slot 18. Further, the shift lever plate 2 has a guide plate 24 made of a synthetic resin having a stepped uneven portion 24A.
Is provided. Then, the tip of the positioning claw 23 is engaged with the uneven portion 24A. That is, the positioning claw 2
The shift lever 7 is positioned at a predetermined operation position by an engagement force between the third lever 3 and the uneven portion 24A.

The shift lever 7 is provided with a detent pin (not shown) operated by operating the knob button 9, and a detent plate (not shown) is provided on the shift lever plate 2 side. . When the automatic transmission is set to the P range, the operation of the detent pin is restricted by the detent plate, and unless the knob button 9 is operated,
The structure is such that the shift lever 7 cannot be changed to another range. In the above embodiment, the shift lever device 1
Specific examples of the synthetic resin material constituting each component include polyacetal and nylon. further,
When the shift lever device 1 is mounted on a vehicle, the entire shift knob 8 and a part of the shaft 9A are exposed outside a console cover (not shown), and other parts are inside the console cover. It is stored in.

Here, the correspondence between the configuration of the embodiment shown in FIGS. 1 to 5 and the configuration of the present invention will be described. That is, the shift lever plate 2 corresponds to the holding member of the present invention, the notch 4 corresponds to the holding hole of the present invention, and the bush 12 corresponds to the cylindrical member of the present invention.

The operation of the shift lever device 1 having the above configuration will be described. First, when the automatic transmission is set to the P range, the knob button 9 is operated to release the engagement between the detent pin and the detent plate. When the shift lever 7 is operated, the operating force of the shift lever 7 is transmitted to the bush 12, and the bush 12 rotates in the circular portion 6 of the cutout 4. As a result, the shift lever 7 moves to the axis A1.
, And the operation of the shift lever 7 is transmitted to the manual valve of the hydraulic control device via the cable 21 to be changed to a range other than the P range. Switching between other ranges is performed in a similar manner.

The sliding surface between the bush 12 and the shift lever plate 2 is lubricated with grease, and its wear is suppressed. Further, the shift lever 7, the bush 12, and the shift lever plate 2 are moved along the axis A <b> 1 by the fitting force between the pair of protrusions 11, the bush 12, and the holding hole 6.
Relative movement (rattle) in a direction perpendicular to the direction of the arrow. Therefore, the operability of the shift lever 7 is favorably maintained.

Next, an assembly process of the shift lever device 1 will be described. First, as shown in FIG. 1, the shift lever 7 and the shift lever plate 2 are relatively moved, and a pair of projections 11 are inserted into the cutouts 6, so that the pair of projections 11
Reaches the center of the circular portion 6, the relative movement between the shift lever 7 and the shift lever plate 2 is stopped.
Thereafter, the bush 12 is moved from the side of the side wall 3 to fit the bush 12 to the inner periphery of the circular hole 6, and the protrusion 11 is fitted to the through hole 15 of the bush 12.

As described above, in this embodiment, 2
The two protrusions 11 are separately attached to the holding holes 6 via the two bushes 12. For this reason, although the shift lever 7 is formed of synthetic resin, the two protrusions 11 are solidly formed to secure the strength, and the dimensions of the two protrusions 11 in the direction orthogonal to the axis A1 are provided. (Thickness) can be suppressed. Therefore, downsizing and weight reduction of the shift lever device 1 are further promoted, and fuel efficiency of the engine can be further improved. Further, the installation space for the shift lever device 1 is suppressed, and the degree of freedom in the layout of components arranged near the shift lever device 1 increases.

Further, since the two bushes 12 are separately fitted to the two projecting portions 11, the two projecting portions 12 are positioned one by one with respect to the holding hole 6, so that each projecting portion 11 And a bush 1 separately for each holding hole 6.
2 can be fitted. Therefore, the positioning operation between the two protrusions 11 and the two holding holes 6 can be easily performed. Therefore, the assembly workability of the shift lever device 1 is improved. Furthermore, since the fitting portion on the shift lever 11 side is limited to the two protrusions 11, the fitting length of each member in the axial direction is suppressed as much as possible. Therefore, the fitting load required for fitting each member is suppressed, and the assembling workability of the shift lever device 1 is further improved.

Further, in this embodiment, the recess 13 and the projection 14 having different heights in the radial direction of the bush 12 are provided on the fitting surface between the two projections 11 and each bush 12.
Are formed. For this reason, the bush 12 is connected to the holding hole 6.
When the bush 12 and the holding hole 6 are misaligned in the direction orthogonal to the axis A1,
By the elastic deformation of the bush 12 and the protrusion 3 in the radial direction, the misalignment between the two is absorbed. Therefore, the sliding resistance between the holding hole 6 and the bush 12 (fitting load).
Is reduced, and the assembling workability of the shift lever device 1 is further improved.

When the shift lever 7 is operated in the assembled state of the shift lever device 1, the concave portion 13 and the convex
Due to the elastic deformation of 4, the frictional resistance between the bush 12 and the shift lever plate 2 is suppressed, and the rotational force (operating force) of the shift lever 7 is hardly converted to the frictional resistance, so that stable operability can be maintained.

Furthermore, since the chamfered portion 16 is provided on one end side of the bush 12, when the bush 12 is fitted to the circular portion 6, the chamfered portion 16 is positioned forward in the fitting direction, so that the bush 12 is The misalignment between the gear and the circular portion 6 is corrected, the fitting load is reduced, and the workability of assembling the shift lever device 1 is further improved. Further, since the grease is held in the recess 13, stable lubrication performance can be obtained for a long period of time.

FIG. 6 is a partial front view showing another embodiment of the present invention. In the embodiment shown in FIG. 6, concave portions 25 and convex portions 26 are alternately formed on the inner periphery of the circular portion 6 of the cutout portion 4 along the circumferential direction. That is, internal teeth are formed on the inner periphery of the circular portion 6. On the other hand, the outer peripheral shape of the bush 12 is circular. In this manner, the shift lever plate 2 and the bush 12 are connected so as to be relatively rotatable. And the outer periphery of the bush 12 has a circular portion 6.
Is fitted on the inner periphery of Other configurations are the same as those of the embodiment of FIGS. 1 to 5, and thus the same reference numerals are given and the description thereof will be omitted. In the embodiment of FIG. 6, the same operation and effect as those of the embodiment of FIGS. 1 to 5 can be obtained.

In the embodiments shown in FIGS. 1 to 6, the front shapes of the through hole 15 and the protruding portion 11 of the bush 12 may be triangular, pentagonal or hexagonal. That is, the shift lever 7 and the bush 12
As long as they are connected so that they cannot rotate relative to each other, serration connection or spline connection may be employed. In addition,
In the embodiment shown in FIGS. 1 to 6, the cylindrical member may be formed in a bottomed cylindrical shape in which one side is open and the other side is closed.

Further, in the embodiment shown in FIGS. 1 to 6, it is possible to provide a notch in the shift lever plate 2 in a substantially horizontal direction. 1 to 6
In this embodiment, a stopper (not shown) is provided to prevent the bush 12 fitted in the holding hole 6 from moving in the holding hole 6 in the axial direction when the shift lever device 1 is assembled. It is also possible.

Further, in the present invention, it is also possible to adopt a configuration in which the cylindrical member is press-fitted into the holding hole of the holding member so as not to rotate, and the protrusion of the shift lever and the cylindrical member are relatively rotatably connected. It is possible. Further, the present invention can be applied to a shift lever device provided on an instrument panel.

[0036]

As described above, according to the first aspect of the present invention,
Even when the shift lever is formed of a synthetic resin, the two protrusions can be solidly configured to ensure their strength, and the dimensions (thickness) of the two protrusions can be suppressed. Therefore, the downsizing and weight reduction of the shift lever device are further promoted, the installation space for the shift lever device is suppressed, and the degree of freedom in the layout of components arranged near the shift lever device is increased.

According to the first aspect of the present invention, the two protrusions are positioned one by one with respect to the holding holes, and the cylindrical members are separately fitted and press-fitted into the respective protrusions and the respective holding holes. it can. Further, the positioning operation between the two protrusions and the two holding holes can be easily performed. Furthermore, since the fitting portion on the shift lever side is limited to the two protruding portions, the fitting length of each member in the axial direction is suppressed as much as possible. Therefore, the assembling workability of the shift lever device is improved.

According to the second aspect of the invention, the same effect as in the first aspect can be obtained. In addition, when the cylindrical member is fitted into the holding hole, the cylindrical member and the holding hole are misaligned in a direction perpendicular to the axis. In this case, the unevenness of the cylindrical member is elastically deformed in the radial direction of the tubular member, thereby absorbing the misalignment between the two. Therefore, the sliding resistance (fitting load) between the holding hole and the cylindrical member is reduced, and the workability of assembling the shift lever device is further improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a shift lever device of the present invention.

FIG. 2 is a front view showing an assembled state of the shift lever device of FIG. 1;

FIG. 3 is a side sectional view taken along line III-III in FIG. 2;

FIG. 4 is a front view of a bush used in the shift lever device of FIGS. 1 and 2;

FIG. 5 is a side view of a bush used in the shift lever device of FIGS. 1 and 2;

FIG. 6 is a partial front view showing another embodiment of the shift lever device of the present invention.

[Explanation of symbols]

1 ... shift lever device, 2 ... shift lever plate,
4 ... holding hole, 7 ... shift lever, 11 ... projecting part,
12 ... bush, 13 ... concave, 14 ... convex, A
1 ... axis.

Claims (2)

[Claims] 1. A shift lever device comprising: a shift lever for controlling a transmission; and a holding member for holding the shift lever rotatably about an axis, wherein the shift lever is formed on the shift lever, and Two projections projecting in opposite directions along each other, two cylinder members separately fitted to the outer periphery of the two projections, and the two cylinder members formed on the holding member, A shift lever device comprising: two holding holes that are separately fitted. 2. A fitting surface between the projecting portion and the tubular member,
The shift lever device according to claim 1, wherein uneven portions having different heights in a radial direction of the cylindrical member are formed.