JP3192956B2 - Shift lever buffer structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to two orthogonal
In a gate type automatic transmission (AT) shift lever device provided with a shift lever which is guided by a detent opening formed along a direction and swings around a predetermined swing point, a collision between the shift lever and other members is reduced. The present invention relates to a shift lever buffer structure.

[0002]

2. Description of the Related Art Generally, a gate type AT shift lever device is supported by a housing installed on the floor of a vehicle and swings around a predetermined swing point, and a parking lever which is pierced by the housing to park. Position, parking exit position,
A detent opening including a reverse position, a reverse preparation position, and a neutral position in order. The detent opening is formed in a crank shape along two directions orthogonal to each other, and erroneous operation of the shift lever is avoided as much as possible by changing the direction of swing of the shift lever by a combination of the two directions. When the swing of the shift lever is changed in direction, a hitting sound is generated due to a collision between the shift lever and the inner wall of the detent opening.

In order to suppress such a tapping sound, a gate type AT shift lever device is provided with a shift lever buffer structure. For example, in the related art, an elastomer cushion plate having an opening similar to the detent opening has been installed on the upper surface of the housing. The opening of the buffer plate member is formed narrower than the detent opening, and the buffer member is made to protrude from the inner wall of the detent opening, so that the collision of the shift lever is received by the buffer member. Since the shift lever collides with the buffer plate prior to the inner wall of the detent opening,
The collision between the shift lever and the inner wall of the detent opening is reduced, and as a result, the hitting sound due to the collision is suppressed.

[0004]

In the above-mentioned conventional shock absorbing structure, a relatively large shock absorbing plate material spreading on the upper surface of the housing is formed of a thermoplastic elastomer material so as to cover the entire detent opening. As a result, it is difficult to secure the component accuracy and positioning accuracy of the plate material.

Further, the gate type AT shift lever device comprises:
The shift lever permits the selection operation from the parking position to the parking release position only when the brake pedal is depressed, such as when starting the vehicle, or prohibits the selection operation from the neutral position to the reverse position while the vehicle is running. In some cases, a shift lock device may be provided so as to be able to perform the operation. This shift lock device protrudes a shift lock member into a movement path of a shift lever under a predetermined condition, and a collision between the shift lock member and the shift lever prohibits a swing operation of the shift lever. A tapping sound occurs.

However, the gate type AT shift lever device has not been provided with any countermeasure for suppressing the hitting sound due to the collision between the shift lock member and the shift lever.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a buffer structure for a shift lever in which component dimensional accuracy can be easily obtained. Another object of the present invention is to provide a new shift lever cushioning structure that can suppress a tapping sound generated by a collision between the shift lock member and the shift lever.

[0008]

To achieve the above object, according to the solution to ## according to the present onset bright, the shift lever gate type AT shift lever device, guiding the detent openings formed along two perpendicular directions When swinging around a predetermined swing point, the shift lever and the buffer structure of the shift lever that suppresses the hitting sound generated by the collision between the shift lever and the inner wall of the detent opening, a decorative housing having the detent opening, A housing that can be arranged inside the decorative housing and surrounds a swing point of the shift lever, and is formed along an inner wall of the housing along the detent opening and is located at a uniform distance from the swing point. An inner housing having a groove; and an inner housing attached to the shift lever, which moves inside the concave groove as the shift lever swings, and A buffer member to relieve the collision with bets opening inner wall, predetermined regardless of the guiding path of the detent opening
Colliding with the shift lever under the condition of
A shift lock member for preventing operation;
Is caused by the collision between the shift lever and the shift lock member.
A shift lock cushioning member that suppresses the hitting noise is integrally provided.

With this configuration, even if the shift lever attempts to collide with the inner wall of the detent opening when the direction of swing of the shift lever is changed, the buffer member collides prior to the collision. As a result, the hitting sound to be generated by the collision between the shift lever and the inner wall of the detent opening is suppressed. In addition, since the buffer member is attached to the shift lever, the buffer member can be formed smaller than the conventional buffer member. As a result, it is possible to easily manufacture a buffer member with high dimensional accuracy, and since the concave groove with which the buffer member abuts is always located at a uniform distance from the swing point of the shift lever, the shift of the buffer member can be performed. Even if the length in the axial direction of the lever is set short, the buffer member collides with the concave groove prior to the collision between the shift lever and the inner wall of the detent opening, so that a stable buffering operation can be obtained. Conventionally, since the upper surface of the housing is flat, the contact position between the upper surface of the housing and the shift lever moves in the axial direction of the shift lever as the shift lever swings. As a result, it is necessary to set the length of the cushioning member in the shift lever axial direction to be long in accordance with the moving distance. And one
Shift lever and detent opening inner wall by cushioning member
Not only reduce the impact sound
Of the shift lever and the shift lock member
Sound can be suppressed.

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a schematic overall configuration of a gate type AT shift lever device to which a buffer structure according to the present invention is applied. The gate-type AT shift lever device AT includes a housing 1 installed on a floor of a vehicle adjacent to a driver's seat of the vehicle.
0 is provided. On the upper surface of the housing 10, a crank-shaped detent opening 11 is formed along two directions D1 and D2 orthogonal to each other. The detent opening 11 has a parking position P, a parking release position P1, a reverse position R,
The reverse preparation position R1, the neutral position N, the drive traveling position D, the gear holding position M, the upshift position (+), and the downshift position (-) are included in order. By changing the direction of the guide path of the detent opening 11, erroneous operation of the shift lever 12 moving in the detent opening 11 can be avoided as much as possible.

Referring also to FIG. 2, a shift lever 12 is swingably supported by the housing 10 via two support shafts 13 and 14 which are orthogonal to each other. The shift lever 12 can swing in all directions around a predetermined swing point 15, that is, an intersection of the two support shafts, by a combination of the two support shafts 13 and 14. Shift lever 12
Is guided by the detent opening 11.

The upper surface of the housing 10 has the shift lever 1
The base upper 16 serves as an inner housing that defines the swing of the base 2 and a decorative housing 17 that covers the base upper 16. The base upper 1
A biasing mechanism 18 that biases the shift lever 12 in a predetermined direction is provided between the shift lever 6 and the shift lever 12. The biasing mechanism 18 includes a biasing slope 20 formed on a ceiling surface 19 of the base upper 16. The ceiling surface 19 is formed in an inverted spherical shape spreading around the swing point 15. When the slide ball 21 attached to the shift lever 12 and biased by a spring descends the biasing slope 20 (in the drawing, upward), the shift lever 12 moves from the parking release position P1 to the parking position P, for example. From the reverse preparation position R1 to the neutral position N
Or forcibly swung.

The shift lever device AT is provided with a buffer structure 22 that can suppress a tapping sound generated when the shift lever 12 collides with the inner wall of the detent opening 11. The buffer structure 22 includes a buffer member 23 integrally attached to the shift lever 12. This buffer member 23
Is made of a thermoplastic elastomer material, and is integrally formed around the round bar portion of the shift lever 12 by two-color molding or insert molding.

The ceiling surface 19 of the base upper 16, along the de <br/> Itento opening 11, grooves 24 of uniform depth D is formed. The buffer member 23 is received in the concave groove 24 at a predetermined distance from the inner wall of the concave groove 24 so as to allow the shift lever 12 to freely swing. Since the concave groove 24 is formed on the inverted spherical ceiling surface 19, the concave groove 24 is located at a uniform distance from the swing point 15 of the shift lever 12. Therefore, the cushioning member 23 is connected to the detent opening 11.
, And always moves in the concave groove 24 as the shift lever 12 swings.

The gate type AT shift lever device AT includes:
A shift lock mechanism 25 for preventing the swing operation of the shift lever 12 under a predetermined condition regardless of the guide path of the detent opening 11 is provided. This shift lock mechanism 25
A cylindrical engaging projection 2 extending from one side of the shift lever 12
6, attached to the housing 10,
And a shift lock member 27 capable of restricting the swing of the shift lever 12 by being hit by the shift lever 12. As is apparent from FIG. 3, the shift lock member 27 is pivotally supported on the inner wall of the housing 10 around the pivot shaft 28, and is also pivotable about the pivot shaft 30. And a second shift lock piece 31 supported by the second shift lock piece 31. The first and second shift lock pieces 29 and 31 are connected to each other via a connection shaft 32, and the two 29 and 31 are interlocked. A solenoid 33 is connected to the second shift lock piece 31. When the shaft of the solenoid 33 moves forward and backward, the first and second shift lock pieces 29 and 31 are moved to the inoperative position shown in FIG. Move between the operating positions shown in FIG.

Referring to FIG. 2 and FIG.
Is a shift lock cushioning material 34 that covers the engagement protrusion 26.
Is provided integrally. Therefore, when the shift lock cushioning member 34 is interposed between the engagement protrusion 26 of the shift lever 12 and the first and second shift lock pieces 29 and 31, the engagement protrusion 26 and the first and second shift locks are interposed. The collision with the pieces 29 and 31 is reduced, and the hitting sound generated by the collision is suppressed.

Next, the operation of the present embodiment will be described. Now
It is assumed that the driver operates the shift lever 12 to move the shift lever 12 from the neutral position N to the drive traveling position D. First, the shift lever 12 swings around the swing point 15 in the direction D2 while being guided by the detent opening 11. At this time, the cushioning member 23 is
It moves inside the concave groove 24 while facing the inner wall at a predetermined interval. Subsequently, the shift lever 12 collides with the inner wall of the detent opening 11 when the direction is changed to the direction D1, that is, when the drive travel position D is established, due to the driver's force. Prior to the collision between the shift lever 12 and the inner wall of the detent opening 11, the buffer member 23 collides with the inner wall of the concave groove 24, so that the impact force is relieved by the elastic action of the buffer member 23, and the hitting sound generated by the collision is suppressed. Is done. Moreover, since the concave groove 24 is formed on the inverted spherical ceiling surface 19, the buffer member 23 and the inner wall of the concave groove 24 always collide at a uniform position from the swing point 15. As a result, even if the length of the buffer member 23 in the axial direction of the shift lever 12 is set to be short, the buffer member 23 reliably collides with the inner wall of the concave groove 24, and it is possible to ensure the suppression of the tapping sound. Thus, by reducing the size of the cushioning member 23 made of a thermoplastic elastomer material, it is possible to easily manufacture the cushioning member 23 with high dimensional accuracy. Further, the buffer member 23 is moved within the concave groove 24.
By doing so, the buffer member 23 is removed from the detent opening 11.
Do not expose to the surface of the shift lever device.

In addition, since it is not necessary to arrange a buffer member between the upper surface of the base upper 16 and the decorative housing 17 as in the prior art, the distance H between the base upper 16 and the decorative housing 17 is set to a minimum. As a result, the distance from the swing point 15 of the shift lever 12 to the detent opening 11 can be set as large as possible. Accordingly, the impact on the shift lever 12 can be suppressed by the increase in the distance, and the durability of the shift lever 12 can be improved.

When the vehicle starts, unless the driver depresses the brake pedal, the first and second shift lock pieces 29 and 31 are positioned in the operating position by the operation of the solenoid 33 (see FIG. 4). As a result, as shown by a two-dot chain line in FIG.
1, the engagement protrusion 26 of the shift lever 12 collides with the second shift lock piece 31 to prevent the shift lever 12 from moving. At this time, the engagement protrusion 26
Is covered with the shift lock cushioning member 34, so that the hitting sound due to the collision between the engagement protrusion 26 and the second shift lock piece 31 is suppressed. The shift lock cushioning member 34 is a cushioning member 2
3 and a new engaging projection 26 and shift lock member 27 without increasing the number of parts.
Can be suppressed.

When the vehicle is running, the first and second shift lock pieces 29, 31 are operated by the solenoid 33.
Is in the operating position. In this case, as long as the driver depresses the brake pedal and the speed of the vehicle does not become lower than a predetermined speed, the neutral position N is switched to the reverse preparation position R.
The first shift lock piece 2 swings the shift lever 12 to the first position.
Blocked by 9 As described above, the engagement protrusion 2
The generation of a tapping sound due to the collision between the first shift lock piece 6 and the first shift lock piece 29 is suppressed by the shift lock cushioning material 34.

[0030]

As described above, according to the present invention, it is possible to use a buffer member smaller than before, and as a result, it is possible to easily manufacture a highly accurate buffer member. Further, it is possible to newly suppress a tapping sound to be generated due to a collision between the shift lever and the shift lock member.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a gate type AT shift lever device to which a buffer structure of a shift lever according to the present invention is applied.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 1, showing a non-operating state of the shift lock mechanism.

FIG. 4 is a cross-sectional view taken along line 3-3 in FIG. 1, showing an operation state of a shift lock mechanism.

[Explanation of symbols]

Reference Signs List 10 housing, 11 detent opening, 12 shift lever, 15 swing point, 23 buffer member, 24 concave groove, 27 shift lock member, 34 shift lock buffer, AT gate type AT shift lever device, D1, D2
Two directions.

Continuation of the front page (56) References JP-A-6-117524 (JP, A) JP-A-62-245416 (JP, A) JP-A-5-246260 (JP, A) Jpn. , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60K 20/00-20/08 F16H 59/00-59/12 G05G 1/00-25/04

Claims (1)

(57) [Claims] When a shift lever of a gate type AT shift lever device is guided by a detent opening formed along two directions orthogonal to each other and swings around a predetermined swing point, the shift lever and the shift lever move together. In a shift lever buffering structure for suppressing a hitting sound generated by collision with an inner wall of a detent opening, a decorative housing having the detent opening, and a surrounding of a swing point of the shift lever which can be arranged inside the decorative housing. A housing, an inner housing having a concave groove formed in the inner wall of the housing along the detent opening and located at a uniform distance from the swing point; and a swing lever attached to the shift lever and swinging the shift lever. the inside of the groove to move along with, soften a collision between the shift lever and detent opening inner wall and a buffer member, said detent Under specified conditions regardless of the opening guide route
Hits the shift lever and prevents the swing operation of the shift lever.
A shift lock member for stopping the shift lever.
Shift lock buffer to reduce the impact sound generated by collision
A buffer structure for a shift lever, comprising a member integrally .