JPH08166830A - Push knob and head part structure of automobile shift lever - Google Patents

Abstract

PURPOSE: To reduce the generation of an abnormal sound at the time of the releasing of a pressing force and lower the cost. CONSTITUTION: The head part structure 1 of the automobile shift lever is equipped with a shift lever head part 4 which has a lateral hole 2 and a longitudinal hole 3, a unlocking rod 7 which has a slanting surface 6 at its upper end part 5 and is energized by a spring as shown by an arrow A and inserted movably into the longitudinal hole 3, a spring reception part 11, the elastomer- made push knob 14 which has an operation part 12 and a base part 13 and is inserted into the lateral hole 2 movably as shown by arrows C and D, and a coil spring 16 arranged between the reception part 11 of the push knob 14 and the bottom surface 15 of the lateral hole 2, and a slanting cam surface 21 which comes into contact with the slanting surface 6 in a freely slidable state and a recessed part 27 which are partitioned with a restriction surface 23 facing the flank 22 of the upper end part 5 are formed at the base part 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push lever for releasing a locked state of a shift lever for an automatic transmission of an automobile and a head structure of the automobile shift lever equipped with the push knob.

[0002]

2. Description of the Related Art In an automatic transmission type (A / T type) automobile, a shift lever is provided in a cockpit, and a driver can manually select a gear position by operating the shift lever. The head structure of the shift lever is composed of a shift lever head having a lateral hole and a vertical hole communicating with the lateral hole, and is urged by a spring to move freely into the vertical hole of the shift lever head. The inserted lock release rod, the spring receiving portion on one end side, the operating portion on the other end side, and the base portion between the receiving portion and the operating portion are respectively provided, and the operating portion projects to the outside to shift lever head. A push knob movably inserted into the lateral hole of the section, and a coil spring arranged between the receiving portion of the push knob and the bottom surface of the lateral hole so as to push the push knob out of the lateral hole. Shi Cage, so as to release the locked state of the lock release rod by pushing in the transverse bore of the push knob.

[0003]

By the way, the push knob for releasing the lock state of the lock releasing rod is conventionally integrally formed by zinc die casting or the like, so that the pushing force on the push knob is released. When the shift lever is locked by pushing the spring, the collision between the spring-loaded push knob and the upper end of the lock release rod causes a comparatively loud noise (collision noise) between the two metal players. Is uncomfortable with. Further, as described above, since the push knob is integrally formed by zinc die casting or the like, the cost is relatively high, and in addition, there is a feeling of strangeness such as coldness when the thumb is operated. On the other hand, it is not satisfactory.

The present invention has been made in view of the above points, and it is an object of the present invention to reduce the generation of abnormal noise when the pressing force is released, and further reduce the cost. An object is to provide a push knob of an automobile shift lever and a head structure of the automobile shift lever.

[0005]

According to the present invention, the object is to have a spring receiving portion, an operating portion and a base portion, and at least the base portion is formed of an elastomer.
In an automobile shift lever, a recessed portion defined by an inclined cam surface that slidably contacts the inclined surface of the upper end portion of the lock release rod and a restriction surface that faces the side surface of the upper end portion of the lock release rod is formed. Achieved by push knob.

Further, according to the present invention, the object is to provide a shift lever head having a lateral hole and a vertical hole communicating with the lateral hole, and an inclined surface at an upper end portion thereof, which is provided with a spring. An unlocking rod urged to be inserted into a longitudinal hole of the shift lever head so as to be movable, a spring receiving portion on one end side, an operating portion on the other end side, and a base portion between the receiving portion and the operating portion. And a push knob that has at least a base portion formed of an elastomer, and the operating portion projects outward and is movably inserted into the lateral hole of the shift lever head, and the push knob is pushed out of the lateral hole. An elastic means disposed between the receiving portion of the push knob and the bottom surface of the lateral hole, and the base portion has an inclination for slidably contacting the inclined surface of the upper end portion of the unlocking rod. Cam surface and side of top of unlock rod Also achieved by a head structure for an automobile shift lever recess defined by the facing regulating surface is formed.

Examples of the elastomer used include polyurethane, polyolefin and polyester, preferably polyurethane and polyester, and more preferably polyurethane.

The inclined cam surface may be formed as a straight flat surface, but in a preferred example, it is formed as a curved surface which is convex toward the inclined surface of the lock releasing rod. Further, the inclined surface of the upper end portion of the lock release rod may be formed as a straight flat surface, or may be formed as a curved surface that is convex toward the inclined cam surface. As the degree of these convex curved surfaces, a radius of curvature of around 350R can be cited as an example. An elastic member such as a rubber sheet may be attached to the regulation surface to further reduce the generation of abnormal sound.

[0009]

In the present invention, the operating portion of the push knob having the receiving portion and the base portion inserted in the lateral holes is pushed, and the push knob is further inserted into the lateral hole by the elastic force of the elastic means. Then, the lock release rod having the inclined surface at the upper end, which is guided by the inclined cam surface of the recess of the push knob and slidably contacts the inclined cam surface, moves in the vertical direction against the spring bias. The shift lever is moved in the hole, whereby the shift lever is unlocked, and the shift lever head can be operated for shifting. When the pressing of the operating portion is released after the shift operation, the push knob is pushed out by the elastic force of the elastic means so that the operating portion is projected from the lateral hole, and at the same time, the lock release rod is moved to the inclined cam surface. At the same time that the push knob is guided back to the original position and returned to its original position, the regulating surface of the recess collides with the side surface of the upper end portion of the unlocking rod to prevent the push knob from falling out of the lateral hole.

The invention will now be described in more detail with reference to the preferred embodiments shown in the drawings. The present invention is not limited to these specific examples.

[0011]

1 to 5, a head structure 1 of a vehicle shift lever according to the present embodiment includes a shift lever head 4 having a lateral hole 2 and a vertical hole 3 communicating with the lateral hole 2, respectively. ,
An unlocking rod which has an inclined surface 6 at the upper end 5 and is urged in the direction A by a spring (not shown) arranged at the lower end and movably inserted into the vertical hole 3 of the shift lever head 4. 7, a spring receiving portion 11 on one end side, an operating portion 12 on the other end side, and a base portion 13 between the receiving portion 11 and the operating portion 12, respectively, at least the base portion 13, in this example, the receiving portion 11,
Each of the operating portion 12 and the base portion 13 is formed by integrally molding from an elastomer, and the operating portion 12 projects outward and is inserted into the lateral hole 2 of the shift lever head 4 movably in the C and D directions. A substantially columnar push knob 14,
A coil spring 16 as an elastic means is provided between the receiving portion 11 of the push knob 14 and the bottom surface 15 of the lateral hole 2 so as to push the push knob 14 out of the lateral hole 2.

The base 13 has an inclined cam surface 21 slidably contacting the inclined surface 6 of the upper end 5 of the unlocking rod 7.
A restriction surface 23 facing the side surface 22 of the upper end portion 5 of the unlocking rod 7, and substantially triangular surfaces 25 and 26 facing the other side surfaces 23 and 24 of the upper end portion 5 of the unlocking rod 7.
The upper end portion 5 of the unlocking rod 7 is slidably in contact with the inclined cam surface 21 of the upper end portion 5 of the unlocking rod 7, and the concave portion 27 is formed in the concave portion 27 in the A and B directions. It is movably inserted. In this example, the inclined cam surface 21 is convex toward the inclined surface 6 of the lock release rod 7 and is formed into a curved surface having a radius of curvature of 350 mm.

A cylindrical lever main body 31 is fitted in the vertical hole 3 of the shift lever head 4 formed of synthetic resin or the like, and the lock release rod 7 moves inside the lever main body 31 in the A and B directions. It is pierced so that it can move freely. The unlocking rod 7 is composed of a metal upper end 5 having a rectangular cross section and an inclined surface 6 at the tip, and a cylindrical metal rod main body 41 integrally connected to the upper end 5.

The spring receiving portion 11 of the push knob 14 has a spring positioning protrusion 51 having a cruciform cross section, the one end 52 side of the coil spring 16 is arranged so as to surround the protrusion 51, and the lateral hole 2 is It has a recess 53 for receiving the protrusion 51 when the operating portion 12 is pressed in the C direction and the push knob 14 is further inserted into the lateral hole 2.

In the automobile shift lever head structure 1 formed as described above, the operating portion 12 of the push knob 14 having the receiving portion 11 and the base portion 13 inserted into the lateral holes 2 is moved in the C direction by the thumb. When pushed, the push knob 14 is inserted into the lateral hole 2 by the elastic force of the coil spring 16 in the D direction and further inserted in the C direction, and is guided to the inclined cam surface 21 of the recess 27 of the push knob 14. The lock releasing rod 7 having the inclined surface 6 slidably contacting the inclined cam surface 21 at the upper end portion 5 is moved in the vertical hole 3 in the B direction against the spring bias. As a result, the shift lever is unlocked, and the shift lever head 4 can be shifted to a desired position. When the pressing of the operating portion 12 is released after the shift operation, the push knob 14 is pushed out by the elastic force of the coil spring 16 so that the operating portion 12 is projected from the lateral hole 2 and, together with this, the lock release rod. 7
Is returned to its original position (position shown in FIG. 1) by being guided by the inclined cam surface 21, and at the same time, the restriction surface 23 of the recess 27 collides with the side surface 22 of the upper end portion 5 of the unlocking rod 7. ,
The push knob 14 is prevented from falling out of the lateral hole 2.

By the way, in the above-described automobile shift lever head structure 1, since the entire push knob 14 is an integrally molded product made of an elastomer, collision noise between metal members does not occur, and the push knob 14 is integrally formed by zinc die casting or the like. Compared with, the abnormal sound (collision sound) is low, and the driver hardly feels uncomfortable. In addition, in addition to being an integrally molded product from the elastomer, the inclined surface 6 of the upper end portion 5 and the base portion 1 are provided without providing a roller or the like on the upper end portion 5 of the unlocking rod 7.
Since the lock release rod 7 can be moved by mutual sliding with the inclined cam surface 21 of No. 3, the structure is simplified and the cost for manufacturing, maintenance, etc. can be reduced.

In order to further reduce abnormal noise (collision noise),
An elastic member such as a rubber sheet may be attached to the regulation surface 23 or the side surface 22.

[0018]

As described above, according to the present invention, it is possible to reduce the generation of abnormal noise when the pressing force is released, and further, the cost of the push knob of the vehicle shift lever and the vehicle shift lever can be reduced. Head structure can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view of a preferred embodiment of the present invention.

2 is a plan view of the push knob shown in FIG. 1. FIG.

FIG. 3 is a front view of the push knob shown in FIG.

FIG. 4 is a sectional view taken along line IV-IV of the push knob shown in FIG.

5 is a cross-sectional view taken along line VV of the push knob shown in FIG.

[Explanation of symbols]

 1 Head Structure of Automobile Shift Lever 2 Horizontal Hole 3 Vertical Hole 4 Shift Lever Head 5 Upper End 6 Inclined Surface 11 Receiving Section 12 Operating Section 13 Base 14 Push Knob 16 Coil Spring 21 Inclined Cam Surface 23 Restricting Surface 24 Concave Place

Claims (6)

[Claims] 1. A spring receiving portion, an operating portion, and a base portion are provided, and at least the base portion is formed of an elastomer.
The base is formed with a recess defined by an inclined cam surface slidably contacting the inclined surface of the upper end of the lock release rod and a restriction surface facing the side surface of the upper end of the lock release rod. Push knob for automobile shift lever. 2. The push knob for an automobile shift lever according to claim 1, wherein the inclined cam surface is formed into a curved surface which is convex toward the inclined surface of the unlocking rod. 3. The push knob for a vehicle shift lever according to claim 1, wherein an elastic sheet member is attached to the regulation surface. 4. A shift lever head having a lateral hole and a vertical hole communicating with the lateral hole, and a sloped surface at the upper end, which is spring-biased to shift the head of the shift lever head. An unlocking rod movably inserted into the longitudinal hole, a spring receiving portion on one end side, an operating portion on the other end side, and a base portion between the receiving portion and the operating portion, respectively, and at least the base portion The push knob is made of an elastomer, and the operating part protrudes to the outside and is inserted into the lateral hole of the shift lever head so that it can move freely.The push knob's receiving part is used to push the push knob out of the lateral hole. An elastic means arranged between the bottom surface of the lateral hole and an elastic means is provided, and the base portion has an inclined cam surface slidably contacting the inclined surface of the upper end portion of the lock releasing rod and the lock releasing rod. It is defined by the regulation surface facing the side surface of the upper end Head structure of automobile shift lever that has a recess. 5. The head structure of an automobile shift lever according to claim 4, wherein the inclined cam surface is formed into a curved surface that is convex toward the inclined surface of the unlocking rod. 6. The automobile shift lever head structure according to claim 4, wherein an elastic sheet member is attached to the regulation surface.