JPH06174060A - Lever main body of transmission lever for automatic transmission - Google Patents

Abstract

PURPOSE:To make the lever main body light in weight, and prevent dimensional accuracy from being scattered by making the respective components of the lever main body of a gear shift lever out of synthetic resin as much as possible, forming the lower section of the cylindrical main body into a sector shape, and thereby providing a support section for its lower end. CONSTITUTION:A gear shifting lever in a gear shift device for an automatic transmission is equipped with a lever main body 10a, an operating knob assembled in the upper section of the lever main body 10a, and with a first and a second detent mechanism. In this case, the lever main body 10a is provided with a cylindrical main body 11 including a metallic inner cylinder 11b, a cylindrical support section 12 located below the lower end section of the cylindrical main body while being perpendicularly intersected therewith, and with a connecting arm section projected forward at the front side of the lower section of the cylindrical main body 11 so as to be integrally formed out of synthetic resin. And the lower section of the cylindrical main body 11 is formed into a sector shape which is gradually divergent to the right and left directions while being directed downward, so that the support section 12 is formed in the lower end of the cylindrical main body 11 so as to be extended in the right and left directions. By this constitution, support strength against force transmitted from the operating knob to the right and left directions can thereby be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever main body of a gear shift operating lever which constitutes a gear shift operating device of an automatic transmission, that is, a lever main body of a gear shift operating lever for an automatic transmission.

[0002]

2. Description of the Related Art The lever main body of a shift operating lever for an automatic transmission is disclosed in, for example, Japanese Utility Model Publication No. 62-162719 and Japanese Utility Model Publication No.
As disclosed in Japanese Patent Laid-Open No. 3-49764 and the like, a tubular main body in which an operation knob is attached to an upper end portion and an operation rod is inserted, and a lower end portion of the tubular main body which is provided orthogonally are inserted. A cylindrical support part that is rotatably assembled in the front and rear direction on a support part provided on the vehicle body through a support pin, and an automatic transmission via a connecting means that is provided so as to project from the lower part front side of the cylindrical body. And a connecting arm portion that is connected to the shift arm, and is configured to shift the automatic transmission by rotating in the front-rear direction.

[0003]

By the way, in the lever main body of such a gear shift operation lever, the cylindrical main body, the supporting portion, the connecting arm portion projecting from the cylindrical main body, and the connecting portion forming the connecting portion of the connecting arm portion are connected. The members are made of independent metal, and these components are assembled by being fixed to each other by a fixing means such as welding or caulking. For this reason, the gear shift operation lever has many components and requires a step of fixing each component, resulting in high cost and low production efficiency. In addition, when the components are fixed, the assembly dimensions often vary, and it takes skill to obtain a highly accurate product, and the total weight increases.

Therefore, an object of the present invention is to solve the above-mentioned problems by forming the lever main body of this type of gear shift operating lever from synthetic resin as much as possible.

[0005]

The first invention of the present invention is as follows:
The operation knob is attached to the upper end and the operation rod is inserted through the tubular body, and the support portion provided on the vehicle body is supported through the support pin that is provided orthogonally to the lower end of the tubular body and is inserted therethrough. And a cylindrical support portion that is rotatably assembled in a direction, and a connecting arm portion that is projectingly provided on the lower front side of the cylindrical body and that is connected to a shift arm of the automatic transmission through a connecting means. In a lever body of a shift operation lever for an automatic transmission that shifts an automatic transmission by rotating in a direction, the tubular body, the support portion, and the connecting arm portion forming the lever body are integrally made of synthetic resin. And the lower portion of the tubular body is formed into a fan shape that gradually expands in the left-right direction toward the lower end,
The supporting portion is integrally formed at the lower end of the tubular body and extends in the left-right direction.

A second aspect of the present invention is the lever body according to the first aspect, wherein the tubular body is fitted into an outer cylinder made of synthetic resin and an inner hole of the outer cylinder. It is characterized by being constituted by a metal inner cylinder forming an inner hole of the cylindrical main body.

The third invention of the present invention is the above-mentioned first invention.
In the lever body according to the invention or the second invention, the vertical width of the connecting arm portion is gradually increased from the tip end of the connecting arm portion toward the base end joint portion.

The fourth invention of the present invention is the above-mentioned first invention.
In the invention, the second invention, or the third invention, the connecting arm portion includes an arm portion made of synthetic resin, and a metal connecting member protruding from a tip end portion of the arm portion to form a connecting portion. It is characterized by that.

[0009]

In the lever main body of the gear shift operation lever constructed as described above, all or a large number of parts of the respective constituent parts are formed integrally with the synthetic resin, so that the weight is reduced. In addition, the cost can be reduced and the production efficiency can be improved without fixing each component. Further, there is no variation in dimensional accuracy due to the work of fixing each component, and a highly accurate lever main body can be easily obtained without requiring skill.

In the lever body according to the first aspect of the present invention, however, the lower portion of the tubular body is formed into a fan shape that gradually expands in the left-right direction, and the support portion is formed at the lower end thereof. Therefore, the play of the operation lever in the left-right direction is suppressed, and the support strength against the force in the left-right direction from the operation knob is improved.

In the lever body according to the second aspect of the present invention, the strength against the load received from the shift arm side of the automatic transmission can be increased with a minimum amount of material,
The lever body according to the third and fourth aspects of the invention has sufficient strength against the load received during operation.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, a gear shift operation of an automatic transmission employing a gear shift operation lever having a lever body according to the present invention as a constituent member. The device is shown. The gear shift operation lever includes a lever body 10a, an operation knob 10b, a first detent mechanism 10c, and a second detent mechanism 10d. The gear shift operation lever is attached to a support base provided on the vehicle body.

The lever body 10a comprises a tubular body 11 and a tubular support portion 12 which is positioned orthogonal to the lower end of the tubular body 11.
And a connecting arm portion 13 projecting forward on the lower front side of the tubular body 11, and the operation knob 10b is assembled to the upper end portion of the tubular body 11 via a coupling joint 14. Further, the first detent mechanism 10c is provided in the inner hole of the tubular main body 11, and the second detent mechanism 10d is provided below the tubular main body 11 to form a gear shift operation lever. ing. Such a gear shift operation lever is rotatably attached to both upright portions below the support base 22 by a support shaft 21 inserted into an inner hole of the support portion 12 so as to be rotatable in the front-rear direction. Further, in the gear shift operation lever, the connecting arm portion 13 is attached to the support base 22.
One end of the inner wire 23 of the operation cable is connected to the tip of the wire, and the other end of the wire 23 is connected to a shift arm of an automatic transmission (not shown).

The first detent mechanism 10c is the operating rod 1
5a, an engagement pin 15b, and a compression spring 15c. The operating rod 15a is inserted into the inner hole of the cylindrical main body 11 of the lever main body 10a, and in this state, the engaging pin 15b is orthogonally fixed to the lower end portion of the operating rod 15a so as to penetrate therethrough. The engaging pin 15b projects from both elongated holes provided in the tubular body 11 extending in the axial direction, and the compression spring 15c is inserted in the lower end portion of the inner hole of the tubular body 11 to connect the operating rod 15a. It is pushing upwards. As a result, one end side of the engagement pin 15b elastically engages with one of the engagement grooves 22b provided in the first upright wall portion 22a of the support base 22 from below, and the engagement pin 15b moves in the front-rear direction of the gear shift operation lever. Rotation is restricted.

The operation knob 10b is rotatably assembled to the grip portion 16a, and its upper portion is exposed to the upper opening.
6b and a torsion spring 16c that urges the operation button 16b so that a part of the operation spring 16b is elastically brought into contact with the head of the operation rod 15a of the first detent mechanism 10c.
By rotating the operation button 16b against the torsion spring 16c, the operation rod 15a is slid downward to separate the engagement pin 15b from one of the engagement grooves 22b downward, and the shift operation lever is moved in the front-back direction. Allow rotation. As a result, if the operation button 16b is released from the rotation operation of the operation button 16b after the gear shift operation lever is rotated to a desired gear position, the operation rod 15a is moved upward by the action of the compression spring 15c and the engagement pin 15b is moved to a predetermined position. To engage with the engaging groove 22b of, and hold the shift operation lever in the upright state at the gear position.
By the action with the second detent mechanism 10d, further rotation in the front-back direction is restricted.

The second detent mechanism 10d has a cylindrical body 1
Compression spring 17 inserted in the second inner hole provided in No. 1
a and a ball 17b received by the spring 17a, and engages with one of the engaging grooves provided in the second standing wall portion 22c of the support base 22. In the second detent mechanism 10d, the ball 17b passes over one of the engaging grooves by a predetermined turning force in the front-rear direction and shifts to another adjacent engaging groove. While providing a feeling of moderation at the time of dynamic operation, the gear shift operation lever is held upright at a predetermined position in cooperation with the first detent mechanism 10c.

Therefore, as shown in FIGS. 3 to 6, the lever main body 10a which constitutes the gear shift operation lever has a tubular main body 11 and a tubular support positioned orthogonally at the lower end of the tubular main body 11. It is composed of a portion 12 and a connecting arm portion 13 that projects forward on the front side of the lower portion of the tubular body 11, and these are integrally formed of synthetic resin.

The cylindrical main body 11 is composed of an outer cylinder 11a made of synthetic resin and an inner cylinder 11b made of metal. The outer cylinder 11a is formed in a fan shape in which the lower part thereof gradually expands in the left-right direction toward the lower end. Also, the inner cylinder 11b is inserted and integrated into the inner hole of the outer cylinder 11a. The inner cylinder 11b is the cylindrical main body 11
And an operation rod 15a that constitutes the first daytent mechanism 10c is inserted into the inner cylinder 11b, and the operation knob 10b of the operation knob 10b is connected to the upper end of the inner cylinder 11b via a coupling joint 14. The grip 16a is connected. The support portion 12 is made of synthetic resin integrally formed with the lower end of the outer cylinder 11a, and includes a pair of left and right cylinder portions 12a and 12b.

The connecting arm portion 13 is composed of an arm portion 13a made of synthetic resin and a connecting pin 13b made of metal protruding orthogonally to the tip portion thereof, and the arm portion 13a is vertically moved from the tip portion to the base end portion. Has a shape in which the width gradually increases, and the base end is integrated with the outside of the outer cylinder 11a of the cylindrical main body 11. The lever body 10a includes a metal inner cylinder 11b and a connecting pin 1 in a lever body forming die.
It is formed by arranging 3b at a predetermined position and integrally molding it with a synthetic resin.

In the lever main body 10a thus constructed, the outer cylinder 11a and the support portion 1 forming the cylindrical main body 11 are formed.
2 and the arm portion 13a forming the connecting arm portion 13 are made of synthetic resin, the weight of the entire lever body 10a is significantly reduced as compared with the conventional metal lever body. Further, in the lever main body 10a, the largest load acts on the tubular main body 11 and the connecting arm portion 13, but the tubular main body 11 is made of the synthetic resin outer cylinder 1.
1a and an inner cylinder 11b made of metal, and the connecting arm portion 13 is made of a synthetic resin arm portion 13a having a special shape and a connecting pin 13b made of metal. And has sufficient strength. Further, in the lever main body 10a, since the lower part of the cylindrical main body 11 is formed in a fan shape that expands in the left-right direction, rattling in the left-right direction is suppressed, and support strength can be improved. Furthermore, the lever body 10
In a, the inner cylinder 11b and the connecting pin 13b, which are metal members, can be integrally molded with synthetic resin in a buried state, facilitating processing, improving production efficiency, and improving dimensional accuracy. Can be achieved.

Incidentally, the lever body 10a in this embodiment.
In FIG. 5, the resin forming the inner peripheral surface of the elongated hole 11c provided in the outer cylinder 11a enters the inner hole of the inner cylinder 11b to cover the inner peripheral surface of the inner cylinder 11b. Therefore, the engagement pin 15b of the first detent mechanism 10c inserted through the elongated hole 11c can reduce the rubbing noise and frictional resistance due to the contact with the inner cylinder 11b made of metal, and the engagement pin 15b. The durability of 15b can be improved. Further, in the lever main body 10a, as shown in FIG. 5, an insertion hole 11 is formed below the outer cylinder 11a by a mold inserted to prevent the resin from entering the inner cylinder 11b during resin molding.
d is formed, but the bottom surface of this insertion hole 11d is the first
Compression spring 15c that constitutes the detent mechanism 10c
Can effectively function as a retainer.

FIG. 7 shows a modified example of the lever body according to the present invention. In the lever main body 10e, the cylindrical main body 11 is made of synthetic resin, and the cylindrical main body 11d and the cylindrical main body 11d.
And a metal pipe 11e having a square cross section, which is embedded in the. A central inner hole 11f is provided at the axial center of the cylindrical body 11d.
Is formed, and a deviation inner hole 11g is formed at a position where the shaft center is deviated in parallel therewith. Center inner hole 11f
The operating rod 1 that constitutes the first detent mechanism 10c
5a is inserted, and the harness 18b of the auto-drive switch 18a is inserted in the deviation inner hole 11g. In the lever body 10e, the cylindrical body 1
Since 1 is composed of the synthetic resin cylindrical body 11d and the metal pipe 11e embedded in the cylindrical body 11d, the both inner holes 11f and 11g described above can be easily integrated in the cylindrical body 11d. It has an advantage that it can be formed.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a shift operating device for an automatic transmission that employs a shift operating lever having a lever body as a constituent member according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional rear view of the shift operating device.

FIG. 3 is a side view of the lever body.

FIG. 4 is a rear view of the lever body.

FIG. 5 is a vertical cross-sectional rear view of the lever body.

FIG. 6 is a partially cutaway plan view of a connecting arm portion that constitutes the lever body.

FIG. 7 is a partially cutaway side view (a) of a gear shift operating lever that constitutes a lever body of a modified example of the lever body, and a cross-sectional plan view (b) taken along line 7-7 of FIG. is there.

[Explanation of symbols]

10a, 10e ... Lever body, 10b ... Operation knob, 10
c ... 1st detent mechanism, 11 ... cylindrical main body, 11a ... outer cylinder, 11b ... inner cylinder, 11d ... cylindrical body, 11e ... pipe, 1
2 ... Support part, 13 ... Connection arm part, 13a ... Arm part,
13b ... connecting pin, 14 ... coupling joint, 21 ... support shaft, 22 ... support base.

Claims (4)

[Claims] 1. A body provided with a tubular body into which an operation knob is attached to an upper end portion and an operation rod inserted, and a support pin which is provided orthogonally to a lower end portion of the tubular body and inserted therethrough. A cylindrical support part that is rotatably mounted in the support part in the front-rear direction, and a connecting arm that projects from the lower part of the cylindrical body and is connected to the shift arm of the automatic transmission through a connecting means. A lever main body of a gear shift operation lever for an automatic transmission that shifts the automatic transmission by rotating in the front-rear direction, the tubular body, the support portion, and the connecting arm portion that form the lever body. The tubular body is integrally formed of synthetic resin, and the lower portion of the tubular body is formed into a fan shape that gradually expands in the left-right direction toward the lower end, and the support portion is provided at the lower end of the tubular body. Left and right formed integrally The lever body of an automatic transmission shift operating lever, characterized in that extending. 2. A lever main body of a gear shift operation lever for an automatic transmission according to claim 1, wherein the tubular main body is fitted into an outer cylinder made of synthetic resin and an inner hole of the outer cylinder. A lever main body of a shift operation lever for an automatic transmission, comprising a metal inner cylinder forming an inner hole of the main body. 3. The lever main body of the shift operation lever for an automatic transmission according to claim 1 or 2, wherein a vertical width of the connecting arm portion is gradually increased from a tip end of the connecting arm portion toward a base end joint portion. The body of the shift control lever for automatic transmissions, which is increasing in number. 4. A lever main body of a shift lever for an automatic transmission according to claim 1, 2 or 3, wherein the connecting arm portion is made of a synthetic resin, and the connecting portion projects from a tip end portion of the arm portion. A lever main body of a gear shift operation lever for an automatic transmission, comprising: