JP3440199B2 - Detent structure of shift lever device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detent structure of a shift lever device, and in particular, when a knob button at an upper end portion of a shift lever is pushed and operated, a lower end portion of the compression rod moves away from the detent by moving upward. The present invention relates to a detent structure of a shift lever device having a structure.

[0002]

2. Description of the Related Art Conventionally, in an automatic transmission operating device (shift lever device) for an automobile, a compression rod is mounted above a shift lever formed of a pipe pivotally supported in a housing fixed to a vehicle body in the front-rear direction. The compression rod descends against the urging force by operating the knob button that slides against the upper end of the compression rod, and a position pin is formed inside the housing that is crossed and inserted near the lower end. It is common to engage a detent portion to determine a shift position by the swing angle of the shift lever, and operate the automatic transmission with a cable connected near the lower end of the shift lever.

Recently, however, as shown in FIGS. 11 and 12, when the knob button is pushed in, the compression rod 2a in the shift lever 1a moves upward, and the lower end of the compression rod 2a moves to the inner bottom 17a of the housing. The shift lever 1a can be swung in the front-rear direction by moving away from the detent groove portion 18a formed of a stepped portion or a concave portion having a plurality of flat planes, while the compression rod 2a moves downward when the pressing of the knob button is released. There is provided a shift lever device of the type in which the detent projection 3a at the lower end thereof comes into contact with the step portion of the detent groove portion 18a and is fixed at a predetermined shift position (for example, Japanese Patent Laid-Open No. 7-54975).

[0004]

However, according to the latter type of shift lever device, the detent projection 3a contacts the detent groove 18a to position the shift lever 1a at a specific gear shift position. When the detent projection 3a is not sufficiently separated from the detent groove 18a when the detent projection 3a is swung, the detent projection 3a and the detent groove 18a collide with each other, and the collision and the lower end of the shift lever. There is a high possibility that bending will act on the detent projection 18a and the detent projection 3a or the detent groove 18a will be broken. Therefore,
If these break, it may not be possible to position them at a specific gear shift position. Therefore, conventionally, these have been made to have high strength, which has led to an increase in weight and an increase in cost. Further, since the detent protrusion 3a abuts the bottom surface of the detent groove portion 18a substantially at right angles, the detent protrusion 3a and the detent groove portion 18 are released when the pressing of the knob button is released.
There is a problem that the tapping sound generated by the contact of a is large.

Therefore, the present invention has been made for the purpose of improving the engagement strength between the detent projection and the detent groove in order to prevent such a situation from occurring.

[0006]

The detent structure of the shift lever device according to the present invention is, according to claim 1, a shift lever supported on a base plate fixed to the vehicle body so as to be swingable in the vehicle longitudinal direction, and the shift lever. A compression rod that moves upward in the shift lever by pushing a knob button provided at the upper end of the lever, a detent groove portion formed as a gear shift portion having a plurality of flat surfaces on the base plate, and the compression rod. A shift lever device provided with a detent protrusion that is provided at the lower end of the detent groove portion and that can be engaged with and disengaged from the detent groove portion, the shift lever base is close to the position plate portion having the detent groove portion formed on the upper surface. Along with this position plate part Being swingably supported, said de
The part where the detent protrusion and the detent groove engage and disengage
Located on the extension of the compression rod and in front
Note: The detent protrusion and the arc that is integral with the detent protrusion.
Is provided at a position sandwiching the position plate
Meanwhile, the shift lever base has
Allows vertical movement of the projection and the arm.
In addition, it is characterized in that guide portions that are sandwiched in the vehicle front-rear direction are provided on both sides of the position plate portion.

According to a second aspect of the present invention, the surfaces of the detent protrusion and the detent groove facing each other are respectively
Phase inclined with respect to the axis of the compression rod
Characterized in that they are formed on tapered surfaces parallel to each other

Therefore, irrespective of the position of the gear position of the detent groove portion with which the detent protrusion portion engages , the detent protrusion portion and the detent groove portion are disengaged on both sides of the disengaged portion.
The tent protrusion and the arm part guide the shift lever base.
Since it sandwiched always vehicle longitudinal direction by parts, detailing
If the cement protrusion is forcibly shift the shift lever is in engagement with the detent groove, although the detent projections arising consistently shear regardless of the position of the shift stage unit, the load due to bending is not act Instead, the engagement strength can be increased.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a compression rod 2 made of synthetic resin or metal is inserted into a shift lever 1 made of metal or synthetic resin pipe material,
At the lower end of the compression rod 2, a detent projection 3 and an arm portion 4 which is bent laterally downward in a substantially C shape are integrally formed, and a pin-shaped shaft portion 5 is provided at the tip of the arm portion 4. It is integrally formed, and the push-up starter 6 is integrally connected to the upper end of the compression rod 2.

The shift lever 1 is formed integrally with the shift lever base 7 or insert-molded with a metal pipe. The shift lever 1 is fitted into the skeleton 10 of the knob 9 to attach the knob 9 to the shift lever base 7. Then, the compression rod 2 is inserted into the shift lever 1 from below the shift lever base 7 to above, and the push-up starter 6 is inserted into the knob button insertion hole 10a formed in the T-shape on the skeleton 10 of the knob 9.
Position. A knob button 11 is inserted into the knob button insertion hole 10a with a spring 12 interposed.

A shaft portion 8 formed integrally with the shift lever base portion 7 is supported by bearing portions 15 and 15 of a base plate 14 fixed to the vehicle body so that the shift lever base portion 7 can swing in the vehicle body front-rear direction. Have. The base plate 14 has a position plate portion 1 at a substantially central portion.
7, the detent groove portion 18 and the corrugated uneven surface 19 are integrally formed on the upper surface of the position plate portion 17. A spring 20 fixed to the shift lever base 7 elastically contacts the corrugated surface 19. The shift lever base portion 7 is arranged close to one side surface of the position plate portion 17, and the position plate portion 1
It is supported so as to be swingable in the front-rear direction of the vehicle body along the line 7.

An indicator cover 21 is attached above the base plate 14. The indicator cover 21 has a guide hole 22 through which the shift lever 1 penetrates.
Is formed, and P, R, N, and
A gear shift stage display portion 23 for D, 1, etc. is provided. In addition,
Reference numeral 24 is a slide cover having a hole 25 through which the shift lever 1 penetrates to cover the guide hole 22 of the indicator cover 21.

The detent projection 3 and the detent groove 1
As shown in FIG. 2, reference numeral 8 denotes P, which is formed on the upper surface of the detent groove portion 18 where the detent projection 3 is located below the detent projection portion 3.
The detent projections 3 move up and down to engage and disengage, facing the R, N, D, 1, etc. gear shift portions 26. A tapered surface 27 that is inclined obliquely upward is formed on the shift stage portion 26 on the side where the shift lever base portion 7 is arranged, and facing the detent projection portion 3, the taper surface 27 is inclined obliquely downward in parallel with the tapered surface 27. The tapered surface 28 is formed, and the tapered surface 2 is formed.
7 and the tapered surface 28, that is, the detent projection and the detail.
The compression rod 2 is the part that engages and disengages with the front groove.
It is located on the extension line of. The arm portion 4 is formed on the opposite side of the tapered surface 28, and the shift lock mechanism 40 is provided.
And the detent projection 3 and the arm section 4 sandwich the position plate section 17 between them.
Is regulated so as not to deviate from the gear stage portion 26.

The shift lever base 7 is shown in FIGS.
As shown in FIG. 9 and FIG. 10, a part of the detent projection 3 is sandwiched by one side surface of the detent groove 18 in the front-back direction of the vehicle body, and the detent projection 3 is allowed to swing vertically. The slit-shaped guide portion 7a opened to the inside is integrally formed.

Further, the shift lever base portion 7 is integrally formed with a holding portion 7b which extends on the opposite side with the position plate portion 17 interposed therebetween .
5, FIG. 6, FIG. 9 and FIG. 10, the guide portion 7c having a U-shaped cross section that holds the arm portion 4 in the vehicle front-rear direction and allows the arm portion 4 to move in the vertical direction is integrally formed. It is molded.

As shown in FIGS. 1 and 3, the knob button 11 has a main body 1 having a projecting end portion to be hit by a fingertip.
3 and an engaging member 30 pivotally supported by the engaging member 30. The engaging member 30 is a shaft pin 3 formed integrally with the main body 13.
1 is rotatably supported by the main body 13 through the shaft hole 32, and is urged to rotate clockwise by a spring 33 in FIG. 3 so that the push-up starter 6 attached to the upper end of the compression rod 2 is constantly moved upward. The first lever portion 34 that can be engaged in the direction of turning to and the skeleton portion 1 that is disposed outside the push-up starting portion 6.
It has a second lever portion 36 that abuts a step portion 10b (see FIG. 9) formed in the knob button insertion hole 10a at the upper end portion of 0. The push-up starting part 6 has a taper part 37 inclined to the knob button 11 side by about 45 degrees, and has the first lever part 3 on its inner surface.
It is formed in a box shape in which the front end of 4 enters and is opened so that it can contact. A protrusion 38 that contacts the outer surface of the tapered portion 37 and pushes the compression rod 2 downward is formed integrally with the side surface of the main body 13 by rounding the corners.

The shaft portion 5 of the arm portion 4 at the lower end portion of the compression rod 2 is clamped by the tip end portions of the key lever 41 and the support lever 42 of the shift lock mechanism 40, as shown in FIGS. . The key lever 41 and the support lever 42 are the position plate portion 1
A shaft 46 formed on a plate 45 integrally formed with a unit case 44 fixed to one side surface of the shaft 7 is rotatably and coaxially supported via telescopic cylinder shaft portions 47 and 48, respectively. The key lever 41 has a substantially L shape and has a shaft portion 5
An end 49 made of a substantially L-shaped metal rod is rotatably supported at the other end opposite to the one end to be clamped, and is prevented from coming off by the coming-off preventing part 50, and at the cylindrical shaft part 48. The return spring 51 is wound, and a locking projection 52 that locks one end of the return spring 51 is integrally formed.

In the support lever 42, a locking projection 53 for locking the other end of the return spring 51 is integrally formed in the vicinity of the cylindrical shaft portion 47, and the other end is centered on the cylindrical shaft portion 47. An arcuate end 54 is formed as a part of the locus circle, and a recess 55 is formed at the base of the arcuate end 54. A lock pin 57 having a pin projection 56 that engages and disengages with the recess 55 is integrally formed with a crown fitting portion 58, and this crown fitting portion 58 is coupled to a plunger 60 of an actuator 59 composed of a solenoid via a spring 61. . When the actuator 59 is actuated, the plunger 60 can be pulled in by a suction force stronger than the spring force of the spring 61, and the pin protrusion 56 can be engaged with the recess 55 facing the pin 60 to stop the movement of the support lever 42. During operation, the plunger 49 is projected by the spring force of the spring 61, and the pin projection 56 is disengaged from the recess 55 to allow the movement of the support lever 42.

Next, the operation of the above embodiment will be described. When the knob 9 is gripped and the knob button 11 is pushed in the state shown in FIG. 5, the first lever portion 34 is compressed as shown in FIG. The detent projection 3 provided at the lower end of the compression rod 2 is detented by entering the push-up starter 6 at the upper end of the rod 2 and contacting the taper 37 with its tip end and moving it upward. It floats from the shift stage portion 26 of the groove portion 18 and can move from a specific shift position to the next shift position to be shifted.
Therefore, when the push of the knob button 11 is released after the shift lever 1 is moved to the specific gear shift position, the knob button 11 projects from the knob 9 by the force of the spring 12 and the knob button 11 is released.
The original state shown in FIG.
The detent projection 3 at the lower end of the compression rod 2 moves downward to a position at which it can be engaged with the speed change step portion 26 by abutting against and pressing the compression rod 2 downward.

Therefore, when the shift lever 1 swings and the detent protrusion 3 collides with the side wall of the gear shift stage portion 26 of the detent groove portion 18 while the compression rod 2 is not fully raised, the detent protrusion 3 is affected. Since the vicinity of the side portion of the engaging portion is sandwiched by the guide portion 7a of the shift lever base portion 7, only the shearing force acts on the detent projection portion 3,
Since the load due to bending does not act, the engagement strength can be significantly improved, and the detent projection 3 is not broken.

Since the arm portion 4 integrally formed with the detent protrusion 3 is sandwiched in the vehicle front-rear direction by the guide portion 7c of the holding portion 7b integrally formed with the shift lever base 7, the detent protrusion 3 and Since the vicinity of the engagement portion of the detent groove portion 18 with the shift stage portion 26 is sandwiched by both sides thereof, a load in the twisting direction does not act on the detent projection portion 3, and the engagement strength can be further improved. it can.

Further, since the speed change step portion 26 with which the detent projection 3 collides has the tapered surfaces 27, 27, the speed change step portion with respect to the width W of the position plate portion 17 (see FIG. 2). Since the size of the shear line acting on the portion 26 can be increased, the shear cross-sectional area can be increased and the shear strength can be improved.

Further, since the tapered surfaces 27 and 28 are inclined with respect to the axis of the compression rod 2, it is possible to reduce the tapping sound generated by the contact between the detent projection and the detent groove 18.

When the knob button 11 is not operated, as shown in FIG. 5, the compression rod 2 is held by the protrusion 38 and the first lever portion 34, and thus is supported without rattling. ing.

That is, as the tapered surfaces 27, 28 become larger than the width dimension W of the speed change step portion 26, the shearing cross-sectional area increases and the shearing force is dispersed, so that the speed change step portion 26 or the detent projection of the compression rod 2 is dispersed. The force that breaks 3 becomes smaller.

Next, when the shift lever base portion 7 is pivoted about the shaft portion 8 in the longitudinal direction of the vehicle body and the shift lever 1 is moved to the P range by the above shift operation, as shown in FIG. The arm portion 4 at the lower end moves together, and the shaft portion 5 becomes a position where it can be held between the key lever 41 and the support lever 42.
When the pressure of 1 is released, the compression rod 2 descends and the shaft portion 5 moves to the key lever 41 and the support lever 42.
Sandwiched between.

When the switch 29 detects that the shift lever 1 has moved to the P range, the actuator 59 is energized, and the key lever 41 rotates clockwise around the shaft 46 as shown in FIG. With
The support lever 42 rotates clockwise and the recess 55
When is located at a position facing the pin protrusion 56, the actuator 59 pulls the plunger 60 with a suction force stronger than the force of the spring 61, and engages the pin protrusion 56 with the recess 55 to prevent the movement of the support lever 42.

When the knob button 11 is pushed in in this state,
As shown in FIG. 9, since the compression rod 2 cannot move upward, the first lever portion 34 rotates downward along the taper portion 37 of the push-up starting portion 6, and the second lever portion 3
The tip of 6 engages with a step portion 10b formed by projecting on the inner peripheral surface of the skeleton hole 12 of the knob to prevent the knob button 11 from being pushed. Therefore, the shaft portion 5 is sandwiched between the key lever 41 and the support lever 42 and cannot move upward. A shift lock is thus formed.

Therefore, when the key lock is performed and the vehicle power is cut off, the plunger 60 of the actuator 59 is pushed out by the spring force of the spring 61, and the pin projection 56 separates from the recess 55. Since the movement of the key lever 41 is blocked, the position of the key lever 41 is fixed. Here, since the spring force of the spring 51 between the key lever 41 and the support lever 42 is set to be stronger than the spring force of the spring 33 that urges the engagement member 30, the support lever 42 rotates to perform compression. Before the rod 2 moves upward, the second lever 36 moves to the step 1
Since it engages with 0b, the compression rod 2 cannot move upward even if the knob button 11 is pushed in, and the shift lock is performed. Therefore, the shift lever 1 cannot be shifted.

Since the vehicle is traveling, when the key interlock is released and the power source of the vehicle is input, the actuator 59 is energized to operate, and the plunger 60 is retracted, but the brake is depressed to energize the actuator. When broken, the pin projection 56 comes out of the recess 55, so that the arcuate end 54 can rotate. Therefore, the compression rod 2 becomes free, and when the knob button 11 is pushed in, the second lever portion 36 causes the step portion 1 to move.
The first lever portion 34 can raise the compression rod 2 without coming into contact with 0b.

[0031]

According to the present invention described above , on both sides of the portion where the detent projection and the detent groove are engaged and disengaged,
The detent protrusion and the arm are
Since the id part is always sandwiched in the front-rear direction of the vehicle body , if you try to shift the shift lever by force without operating the knob button, shearing force will always be generated in the detent protrusion, and the bending load will not act. The engagement strength can be increased . As a result, breakage of the detent protrusion can be prevented.

Further, since the guides for sandwiching the detent projection and the arm in the front-rear direction of the vehicle body are arranged on both sides of the position plate, it is possible to prevent a load in the twisting direction from acting on the detent projection. It is possible to further improve the engagement strength.

Further, since the detent projection and the gear shift step portion of the detent groove are formed in parallel with each other so as to form tapered surfaces that can be engaged with each other, a shear line acting on the gear shift step portion with respect to the width of the position plate portion is formed. Since it can be made longer to increase the shear cross-sectional area, the shear strength can be greatly improved.
Breakage of the detent groove can be prevented. Also, the compressor
The taper surface is inclined with respect to the axis of the rod
Therefore, the detent projection and the detent groove contact each other
The tapping sound produced can be reduced.

Therefore, the detent structure can be simplified, and the weight and cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a relationship between a detent groove portion and a detent projection portion.

FIG. 3 is a perspective view showing the structure of a knob button.

FIG. 4 is an exploded perspective view of a shift lock mechanism.

FIG. 5 is an operation explanatory view showing a main part of a shift lever.

FIG. 6 is an operation explanatory view showing a main part of a shift lever.

FIG. 7 is an explanatory view of the operation of the shift lock mechanism.

FIG. 8 is an explanatory view of the operation of the shift lock mechanism.

FIG. 9 is an operation explanatory view showing a main part of a shift lever.

10 is a sectional view taken along line YY of FIG.

FIG. 11 is a side view of a partial cross-section of a conventional example.

12 is a sectional view taken along line XX of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Shift lever 2 ... Compression rod 3 ... Detent projection 4 ... Arm 5 ... Shaft 6 ... Push-up starter 7 ... Shift lever bases 7a, 7c ... Guide 8 ... Shaft 9 ... Knob 10 ... Skeleton 10a ... Knob button insertion hole 10b ... Step portion 11 ... Knob button 12 ... Spring 13 ... Main body 14 ... Base plate 17 ... Position plate portion 18 ... Detent groove portion 26 ... Gear shift step portions 27, 28 ... Tapered surface 30 ... Engaging member 34 ... First lever portion 36 ... Second lever portion

Continuation of the front page (56) Reference Japanese Unexamined Patent Publication No. 9-58291 (JP, A) Actually opened 63-192815 (JP, U) Actually opened 2-53563 (JP, U) Actually opened 62-76028 (JP , 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 (2)

(57) [Claims] 1. A shift lever supported by a base plate fixed to a vehicle body so as to be swingable in the vehicle longitudinal direction, and a compression rod which moves upward in the shift lever by pushing a knob button provided at an upper end portion of the shift lever. And a detent groove portion formed on the base plate as a speed change step portion having a plurality of flat surfaces having height differences, and a detent protrusion portion provided at a lower end portion of the compression rod and detachable from the detent groove portion. in the lever device, the shift lever while being disposed close to the position plate portion whose shift lever base portion to form the detent groove on the upper surface, is swingably supported along the position plate portion, wherein Detent protrusion and the detent groove
The part where and disengage is on the extension line of the compression rod.
And the detent protrusion and the detent.
And the arm part integrated with the projection part is the position plate
The shift lever base portion is provided at a position sandwiching the portion.
The upper and lower sides of the detent protrusion and the arm.
A detent structure of a shift lever device, characterized in that guide portions that allow the movement in the direction and that are sandwiched in the longitudinal direction of the vehicle body are provided on both sides of the position plate portion. 2. The surfaces of the detent projection and the detent groove, which are opposed to each other, are respectively formed into the compression rods.
The detent structure of the shift lever device according to claim 1, wherein the detent structure is formed on tapered surfaces which are parallel to each other and are inclined with respect to the axis of the door.