JP2573946Y2 - Column type shift operation device for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a column-type shift operation device for an automatic transmission.

(Prior Art) In a vehicle equipped with an automatic transmission, during parking, an operation lever of a shift operation device is positioned at a parking position in order to keep the transmission in a parking range. Further, when the vehicle starts, the operating lever is operated to the traveling position while the brake is operated after the engine is started in order to avoid sudden start, and the transmission is shifted to the traveling range. Generally, in a transmission for an automatic transmission, in order to avoid an erroneous operation due to carelessness when the vehicle starts, the operation lever cannot be operated to a traveling position unless a brake operation is performed. Is configured as follows.

That is, the column type speed change operation device is arranged in parallel with the steering column, and a detent engagement member fixedly mounted on the outer periphery of the steering column and having a plurality of engagement recesses for determining each range position. An operating member assembled to be movable in the axial direction and rotatable in the circumferential direction, and each engaging recess of the detent engaging member protruding from the outer periphery of the operating member and moving in the axial direction of the operating member. A detent engaged member that is engaged with and disengaged from a place and selects an engagement recess to be engaged by rotating the operating member in a circumferential direction; and the detent engaging member that determines a parking position of the detent engaged member. A locking member for preventing the mating member from being disengaged from the first engagement recess, wherein when the detent-engaged member is engaged with the first engagement recess, a brake is provided. It said locking member in response to operations have been configured to allow detachment from the first engagement recesses of the detent engaged member operates.

In this type of speed change operation device, as shown in Japanese Utility Model Laid-Open No. 1-94133, a lock lever is employed as a lock member, and an intermediate portion of the lock lever is provided on the outer periphery of the steering column. It is rotatably supported by a plate-shaped bracket. Such a lock lever is provided with a hook portion at the distal end portion, and the hook portion advances and retreats to the front of the opening of the first engagement recess of the detent engagement member by the rotation operation.

(Problem to be Solved by the Invention) Meanwhile, in the speed change operation device having such a configuration, a bracket for rotatably supporting the lock lever is required as a separate member, and at least the two members are indispensable components. As compared with the case where the number of components is one and the minimum number of parts is one, the structure is complicated and large, and the accuracy of the product due to errors in the manufacturing dimensions of each component, assembly errors, etc. Affect.

Further, in the column-type speed change operation device, the operating force acting on the lock member is large due to the relationship of the lever ratio of the operation lever. As described above, the structure in which the lock lever as the lock member is rotatably supported by the bracket is disadvantageous in strength. It is.

Therefore, the purpose of the present invention is to address these problems.

(Means for Solving the Problems) According to the present invention, in a column type speed change operation device of the type described above, a lock pin is employed as the lock member and the first engagement recess in the detent engagement member is formed. The lock pin is attached to the first engagement recess so as to be able to protrude and retract from the first engagement recess at an opening front portion of the first engagement recess at the extension portion, and the detent is provided. Operating means for operating a detecting means for detecting an engaged state of the engaged member with the first engagement recess is disposed on the back side of the detent engaged member, and the detent engaged member is When engaging with the first engagement recess, the operating means is operated by the detent engaged member to operate the detecting means.

(Operation / Effect of the Invention) In the column-type shift operation device having the above-described configuration, the detent-engaged member during parking of the vehicle is engaged with the first engagement recess of the detent-engaging member that determines the parking position. When the brake operation is not performed, the lock pin protrudes from the first engaging recess at the front of the opening of the first engaging recess, and the detent engaged member is in the first engaging recess. Cannot get out of the recess. For this reason, the vehicle cannot be started.

In this state, when the brake operation is performed, the lock pin is retracted from the front of the opening of the first engagement recess, and the detent engaged member can be released from the first engagement recess. I do. Therefore, by operating the operation lever while operating the brake to move the operation member in one of the axial directions, the detent engaged member is disengaged from the first engagement recess, and the operation member is moved in the circumferential direction. By rotating to the other position, it can be engaged with another engaging recess which determines the traveling position. Therefore, the vehicle can be started without inadvertent sudden start.

As described above, in the speed change operation device, since the lock pin is employed as the lock member and the lock pin is assembled to the detent engaging member so as to be able to protrude and retract, the special bracket or the like for supporting the lock member as in the related art is used. Dimensional error, compared to the case where the lock member is assembled to the detent engagement member via a bracket or the like in a predetermined relationship with the detent engagement member, the influence on the accuracy of the device due to the assembly error is small, and The structure is simple and downsizing can be achieved.

Further, in the speed change operation device, the lock pin is assembled to the strong detent engaging member, and the locking pin is engaged with the detent engaged member at a root portion protruding from the detent engaging member. It can be supported at the same base, and is extremely advantageous in strength.

On the other hand, in the speed change operating device, the operating means for operating the detecting means for detecting the engagement state (parking position state) of the detent engaged member with the first engagement recess is changed to the back side of the detent engaged member. When the detent engaged member engages with the first engagement recess, the operating means is operated by the detent engaged member to operate the detecting means. It is possible to accurately detect the state of the parking position where the detent engaged member is engaged with the first engagement recess and the state where the detent engaged member is released from the parking position.

As described above, in the speed change operation device, when the detent engaged member provided integrally with the operation member is engaged with the first engagement recess, the detection of detecting the parking position state at the back thereof is performed. Since the means is operated by the detent engaged member through the operating means, the parking position state can be detected accurately and accurately, and the operation of the operating member is prevented when the brake is not operated in the parking position state. This has the effect that control can be performed accurately.

(Example) An example of the present invention will be described below with reference to the drawings.
FIGS. 1 and 2 show a state in which the speed change operating device 10 according to the present invention is assembled to a steering device 20. FIG.

The speed change operation device 10 is a column type speed change operation device for an automatic transmission, and includes a detent retainer 11 serving as a detent engagement member, a control shaft 12 serving as an operation member, a shift lever 13, and a detent lever 14 serving as a detent engagement member. And a lock mechanism, which includes a lock pin 15, a link 16, a solenoid 17, a manual release unit 18, and a parking position detection switch 19c.

As shown in FIGS. 1 to 4, the detent retainer 11 has a first recess 11a for determining a parking position (P position) and a second recess 11b for determining a reverse position (R position) in the front circumferential direction. , A third position 11c for determining a neutral position (N position), a drive position (D position) and a second position (2 positions), and a fourth position 11d for determining a low position (L position). One side wall forming the first concave portion 11a for determining the P position is extended a predetermined length forward in the front, and a lock pin 15 described later is slidably inserted into the extended portion 11e. A through hole 11f is formed. The detent retainer 11 is connected to a steering column 21 of a steering device 20.
It is screwed and assembled to an upper bracket 23 bolted to a first bracket 22 fixed to the outer periphery of the steering column 21 and protrudes to one side of the outer periphery of the steering column 21.

The control shaft 12 is shown in FIGS.
As shown in the figure, a compression spring 26 is attached to the outer periphery of a short support rod 25 screwed to a second bracket 24 fixed at one end to the outer periphery of the steering column 21.
And the other end side is supported by a column hole cover (not shown) so as to be slidable in the axial and circumferential directions. As a result, the control shaft 12 is positioned in parallel on one side of the outer periphery of the steering column 21, and is movable in the axial direction and rotatable in the circumferential direction. A shift lever 13 is attached to the control shaft 12, and a detent lever 14 is fixed thereto.

The shift lever 13 has an operating portion 13a as shown in FIG.
Is provided with a connecting arm 13b at the distal end thereof, and the arm 13b is rotatably connected to the distal end of the operating portion 13a at its base end only in the horizontal direction, and assembles the support rod 25 at its distal end. Hole
It is rotatably connected to 25a. Shift lever 1
The control shaft 12 is integrally mounted on the cylindrical portion 12a while being inserted into the mounting cylindrical portion 12a fixed to one end outer peripheral portion of the control shaft 12, and the control shaft 12 is compressed by pulling up the shift lever 13. It moves to one end in the axial direction against the spring 26, and rotates in the circumferential direction by a rotation operation. The detent lever 14 is the control shaft 12
The outer periphery of the retainer 11 is fixed to the opposite side of the mounting cylinder portion 12a, extends toward the front side of the detent retainer 11, and extends into each of the recesses 11 of the retainer 11.
a to 11d can be selectively engaged.

The lock mechanism comprises a lock pin 15, a link 16 and a solenoid 17, and as shown in FIGS. 3 and 4, the lock pin 15 is slidably fitted into a through hole 11f in an extension 11e of the detent retainer 11. , Its lower end is link 16
Is movably connected to one end of the link 16 in the longitudinal direction of the link 16. The link 16 has an L-shape, and is supported at its intermediate bending portion by the cover 19a and the detent retainer 11 so as to be able to swing vertically. Solenoid 17 covers
The end of the plunger 17a is connected to the other end of the link 16 so as to be movable in the longitudinal direction, and a compression spring 17c is interposed between the solenoid body 17b and the link 16. ing. When the solenoid 17 is not energized, the plunger 17a protrudes to hold the link 16 in a non-oscillating state, the lock pin 15 is protruded from the upper surface of the extension 11e of the detent retainer 11, and the plunger 17a is retracted by energization to link. Swing 16 and lock pin 15 to extension 11e
Buried from the top of the The energization of the solenoid 17 is controlled by known control means.
14 is engaged with the first recess 11a, which is the P position of the detent retainer 11, and is energized only when a brake operation is performed.

The manual release means 18 includes a link 18a, a rod 18b, a compression spring 18c, and a knob 18d as shown in FIGS. 1, 2, 6, and 7, and these members are provided in a case 18e.
And is covered with a case cover 18f. One end of the link 18a is supported by the case 18e so as to be rotatable in the vertical direction, and the other end is connected to the upper end of the rod 18b. The rod 18b is urged upward by a compression spring 18c, and its lower end projects slightly downward. The knob 18d is connected to an intermediate portion of the link 28a, and is slidably fitted in a hole in an upper portion of the case 28e.
The manual release means 18 is attached to the third bracket 27 and the fourth bracket 28 provided on the steering column 21, and the lower end of the rod 18d faces the upper end of the link 16 of the lock mechanism.

The detection means for the P position is shown in FIGS.
As shown in FIG. 8 and FIG. 8, an operation pin 19b, a detection switch 19c, and a movable contact 19d are provided. In the detection means, the operation pin 19b projects to the back of the detent lever 14 on the side of the lock pin 15. FIG. 8 shows a detection switch 19c, an operation pin 19b, and a detent lever.
14 shows that the detent lever 14 slides the operation pin 19b when engaging the first recess 11a which is the P position of the detent retainer 11, and the movable lever engaged with the operation pin 19b The contact 19d is moved as shown in FIGS. 7A and 7B to turn on the detection switch 19c. When the first recess 11a of the detent lever 14 comes off, the movable contact 1
9d self-returns and turns off, and the operation pin 19b also returns.

In the shift operating device 10 having such a configuration, when the detent lever 14 is engaged with the first recess 11a which is the P position of the detent retainer 11 while the vehicle is parked as shown in FIG. Even if the detection switch 19c detects that the detent lever 14 is at the P position and the engine is started, the solenoid 17 is not energized and holds the link 16 in the non-oscillating state. The lock pin 15 is projected.
For this reason, the lock pin 15 is the first pin of the detent retainer 11.
Opposing the concave portion 11a, the detent lever 14 engaged with the first concave portion 11a is restricted from being separated from the concave portion 11a,
The operation of the shift lever 13 is impossible and the vehicle cannot start.

On the other hand, if a brake operation is performed in this state, the solenoid 17 is energized during this operation, retreats the plunger 17a, swings the link 16 and moves the lock pin 15 to the retainer.
It is buried from the upper surface of the extension part 11e in 11. As a result, the detent lever 14 can be detached from the first recess 11a, and when the shift lever 13 is pulled up while operating the brake, the control shaft 12 moves to one side in the axial direction, and at the same time, the control shaft 12 is integrated with the shaft 12. Detent lever
14 moves in the same direction and separates from the first recess 11a. Thereafter, when the shift lever 13 is rotated, the control shaft 12 and the detent lever 14 rotate integrally in the circumferential direction, and engage with any of the recesses 11b to 11d which determine a desired position where the lever 14 can travel. Can be done.
In this state, the detection switch 19c is turned off, and the solenoid 17 is turned off so that the lock pin 15 projects. As a result, the vehicle can be started, and a sudden start can be avoided.

When the vehicle is stopped and the detent lever 14 is engaged with the first recess 11a which is the P position of the detent retainer 11, the shift lever 13 is turned while being lifted. As a result, the detent lever 14 presses the upper end of the protruding lock pin 15 to bury the lock pin 15 and releases the operation of the shift lever 13, so that the detent lever 14 moves the operation pin 19b and the movable contact 19d. While engaging with the first recess 11a and detecting switch 1
9c reliably detects that the detent lever 14 is located at the P position.

When the detent lever 14 is disengaged from the first recess 11a of the detent retainer 11 when the electric system, the solenoid 17 and the like are abnormal in the transmission operating device 10, the knob 18d of the manual release means 18 is pushed. . As a result, the link 18a pivots downward to move the rod 18b to the compression spring 18c.
To push the rod 18b downward. As a result, the rod 18b pushes down one end of the link 16 of the lock mechanism to swing the link 16 so that the lock pin 15 is buried from the upper surface of the extension 11e of the detent retainer 11, and the first detent lever 14 Detachment from the recess 11a is enabled.

Thus, in the speed change operation device 10, the lock pin 15 is employed as a lock member constituting the lock mechanism, and the lock pin 15 is assembled to the extension part 11 e of the detent retainer 11 so as to be able to protrude and retract. This eliminates the need for a special bracket or the like for supporting the lock member as in the related art, and reduces manufacturing dimensional errors and assembly errors as compared with the case where the detent retainer 11 is assembled in a predetermined relationship via the bracket or the like. The effect on the accuracy of the apparatus due to the influence is small, the structure is simple, and the apparatus can be downsized.

Further, in the speed change operation device 10, the lock pin 15
Is attached to the strong detent retainer 11 and the detent lever 14 is attached to the detent retainer 11.
Of the extension part 11e from the upper surface, the acting force from the detent lever 14 can be supported by the same root part, which is extremely advantageous in terms of strength as compared with the related art. .

On the other hand, in the transmission operating device 10, the operation pin 19b for operating the detection switch 19c for detecting the engagement state (P position state) of the detent retainer 11 with the first engagement recess 11a, and the movable contact 19d are connected to the detent lever
The detent lever 14 is arranged on the back side to operate when the detent lever 14 is engaged with the first engagement recess 11a, and is inoperative when disengaged. Therefore, it is possible to accurately detect the state of the P position where the detent lever 14 is engaged with the first engagement recess 11a and the state where the detent lever 14 is released from the P position.

As described above, in the speed change operation device 10, the detent lever 14 provided integrally with the control shaft 12 is provided.
Operates the detection switch 19c for detecting the P-position state at the back when engaging with the first engagement recess 11a. Therefore, the P-position state can be detected accurately and accurately. When the brake is not operated,
This has an effect that control for preventing operation of the shift lever 13 can be accurately performed.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state in which a gearshift operating device according to an embodiment of the present invention is assembled to a steering device, FIG. 2 is a side view of the device, and FIG. 3 is a diagram of a detent retainer and a lock mechanism in the device. FIG. 4 is a front view, FIG. 5 is a partial cross-sectional view showing an assembly portion of the shift lever to the control shaft, FIG. 6 is a side view of the manual release means, and FIG. 8 (a) and 8 (b) are schematic views showing the relationship among the detection switch, the operation pin, and the detent lever. EXPLANATION OF REFERENCE NUMERALS 10: transmission operating device, 11: detent retainer (detent engagement member), 11a to 11d: engagement recess, 11e: extension, 12, control shaft, 13: shift lever , 14 ... detent lever (detent engaged member), 15 ... lock pin, 16 ... link, 17 ... solenoid, 18 ... manual release means, 19b ... operation pin, 19c ...
Detection switch, 20 ... Steering device, 21 ... Steering column.

Claims (1)

(57) [Scope of request for utility model registration] A detent engaging member fixedly mounted on an outer periphery of a steering column and having a plurality of engaging recesses for determining each range position; and a detent engaging member arranged in parallel with the steering column to move in an axial direction. An operating member which is mounted so as to be rotatable in the circumferential direction, and is engaged with each of the engaging recesses of the detent engaging member by axially moving the operating member protruding from the outer periphery of the operating member. A detent engaged member for selecting an engagement recess to be disengaged and rotated by rotating the operating member in a circumferential direction; and a first detent engaging member for determining a parking position of the detent engaged member. A locking member that prevents the locking portion from being disengaged from the engagement recess. When the detent engaged member is engaged with the first engagement recess, the lock portion is actuated in response to a brake operation. Actuates the detent-engaged member from the first engagement recess so that the detent-engaged member can be disengaged from the first engagement recess. One side wall forming the first engagement recess in the joining member is extended, and the lock pin is attached to the first engagement recess at an opening front portion of the first engagement recess at the extension portion. Operating means for assembling so as to be able to protrude and retract from a place and operating a detecting means for detecting an engagement state of the detent-engaged member with the first engagement recess on the back side of the detent-engaged member And the detent engaged member is the first
Wherein the detecting means is operated by operating the operating means by the detent-engaged member when engaging with the engaging recess of (1).