JP2969053B2 - Shift lock structure of shift lever - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lock structure for a shift lever of an automatic transmission vehicle, and more particularly to a shift lock structure for a shift lever having a zigzag shift pattern and preventing a malfunction of the shift lever by a two-stage operation. .

[0002]

2. Description of the Related Art P (parking), R
(Reverse), N (neutral), D (drive),
Shift positions such as 2 (2nd) and L (low) are set, and the driver can perform a starting operation and a traveling operation by appropriately selecting the position of the shift lever. Conventional shift levers have a predetermined condition for shifting to a specific position, for example, when a brake pedal is depressed, or when the vehicle speed is lower than a predetermined speed, in order to prevent sudden start or engine damage due to shift lever erroneous operation. The safety conditions described above are satisfied, and the configuration can be performed only when an additional operation other than the shift operation is performed. For example, the type in which the shift position patterns are arranged in a straight line is P →
When performing a shift operation such as R, 2 → L, etc., in addition to the safety conditions, the shift lock is released by a solenoid or the like by pressing a select lever button provided on the shift knob as an additional operation, and operation becomes possible. .

There is also a type in which a shift pattern is formed in a zigzag shape as shown in FIG. 5 and a select lever button which is difficult to arrange and connect is eliminated. In the zigzag type, when performing a shift operation to a specific position, prior to moving in a position selection direction (arrow A direction in FIG. 5), a shift change preparation direction (arrow B in FIG. 5) perpendicular to the direction A is required. In the direction). In the case of this type, the release of the lock mechanism is performed when safety conditions are met. For example, FIG.
The shift lock structure shown in FIG.
A shift lever 51 is rotatable with respect to the rotating shaft 50 in a direction indicated by a middle arrow A (in the direction indicated by an arrow B in FIG. 6). It is connected. Further, a lock plate 5 having a plurality of openings 54a and 54b at one end of the rotation shaft 50 is provided.
A solenoid 55 having a sliding pin 55a that can be fitted into the openings 54a and 54b is provided in the vicinity thereof. This shift lock structure is a shift lever 5
When 1 is at the P position and the brake pedal is not stepped on, the sliding pin 55a projects and fits into the opening 54a, and the shift lever 51 is moved in the position selection direction (A direction).
And the shift from the P position to the R position is prohibited. Similarly, when conditions such as the vehicle speed being equal to or lower than the predetermined speed are not satisfied even at the N position, a similar regulating operation is performed, and the shift from the N position to the R position is prohibited.

Japanese Patent Application Laid-Open No. 4-307162 discloses that when the brake pedal is not depressed at the P position,
A configuration is disclosed in which a block member that restricts swinging protrudes on a swing path in a shift change preparation direction to prevent the swing operation of the shift lever itself, thereby preventing malfunction.

[0005]

However, in a shift lever having a zigzag shift pattern as described above, a shift lock structure in which a shift operation is prevented by a slide pin as in the former case, the engagement between the slide pin and the lock plate. In this case, that is, when the shift operation is performed erroneously at the time of the shift lock, all loads are applied to the sliding pins, so that the strength of the sliding pins is required to be improved. A large solenoid or a large current is required for driving, which causes a problem that the entire shift lock structure becomes large.

On the other hand, in the latter shift lock structure, since the lock member receives an external force on the side surface, the strength of the lock member itself is not so much required. In order to perform a shift lock operation, a lock member and a driving mechanism, such as a solenoid, are required for each lock position, which leads to an increase in the number of parts, an increase in the size of the shift lock structure, an increase in parts costs, and the like. The problem occurs.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and enables shift lock at a plurality of positions without increasing the size of the shift lock structure, and reduces the number of parts. It is an object of the present invention to provide a shift lock structure of a shift lever that can perform the operation.

[0008]

In order to achieve the above object, the invention according to claim 1 is directed to a position selection direction for selecting a shift position of an automatic transmission vehicle and a position selection direction for a predetermined shift position. in the shift lock structure of swingable shift lever and the shift change ready direction substantially perpendicular, parallel to said shift lever protrusion provided on the shift change prepare direction at the bottom, the position selection direction of the shift lever A first lock lever and a second lock lever having a plurality of side wall contact portions provided and contacting the protrusions;
A link mechanism comprising:
The protrusion is opened and closed on a plane parallel to the shift lever swing plane.
And Brighter link mechanism selectively regulated to at a plurality of positions swung position selection direction to shift change prepare direction of the shift lever by the parts and the side wall contact portion comes into contact, thereby opening and closing said link mechanism And a single link mechanism driving source.

[0009] According to a second aspect of the invention, in the shift lock structure of a shift lever according to claim 1, wherein the link mechanism includes a first lock lever of the substantially V-shaped interlocking operation
And a substantially M-shaped second lock lever. The shift lever moves from the parking position to the reverse position, from the neutral position to the reverse position, and from the 2nd position to the low position. The opening and closing operation is performed so as to selectively restrict the swing of the shift lever in the shift change preparation direction at any two places.

[0010]

According to the first aspect of the present invention, the first lock lever and the second lock lever which are provided in parallel with the position selection direction of the shift lever and have a plurality of side wall contact portions .
The link mechanism consisting of a lock lever is driven by a single link mechanism drive source to shift the shift lever in the position selection direction.
The opening / closing operation is performed on a plane parallel to the swinging surface, and the side wall contact portion comes into contact with the projection provided on the shift lever. Therefore,
The swing of the shift lever in the shift change preparation direction is selectively restricted at a plurality of positions in the position selection direction.

According to the second aspect of the present invention, the link mechanism has a substantially V-shaped first lock lever that operates in conjunction with each other.
And a second lock lever having a substantially M-shape. The opening / closing operation is performed by the operation of the link mechanism driving source. When the shift lever moves from the parking position to the reverse position at the open position or the closed position, and when the shift lever moves from the neutral position. Either when moving to the reverse position or when moving from the 2nd position to the low position 2
Selectively regulating the swing of the shift change preparation direction of the shift lever in place.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an assembly view showing main components of a shift lever having a shift lock structure according to the present embodiment.
The main body housing 10 has a zigzag-shaped shift pattern 10a as shown in FIG. 5 on the upper surface, and incorporates a shift control device, switches, sensors, and the like (not shown) inside and on the side surfaces. In the shift pattern 10a, along with the shift pattern 10a, a position selection direction (A direction in the drawing) of a shift position such as P, R, N, D, and the like;
A shift lever 12 that can swing in a shift change preparation direction (direction B in the drawing) substantially orthogonal to the position selection direction.
Is inserted. The shift lever 12 includes a knob 12a directly gripped by a driver, a preparation direction swing block 16 that swings in a shift change preparation direction around a first swing shaft 14 inside the main body housing 10, and a preparation direction swing block. A selection direction swing block 20 for swingably holding the block 16 on the body portion and swinging in a position selection direction about a second swing shaft 18; the knob 12a and the preparation direction swing block 16; Are connected to each other by a lever shaft 12b or the like. When the first swing shaft 14 is inserted into the preparation direction swing block 16, the neck 1 of the first swing shaft 14
A spring torsion 22 is inserted into 4a, and one end 22a of the spring torsion 22 is wound around the body of the preparatory direction swing block 16, and constantly urges the preparatory direction swing block 16 in the direction B1 in the drawing.

A characteristic feature of the present embodiment is that the driver inadvertently swings the shift lever in the shift change preparation direction at the P position, the N position, or the like when the driver does not care (when the above-described safety conditions are not satisfied). In such a case, a link mechanism driven by a single drive source for preventing the swing operation is provided.

As shown in FIG. 1, the link mechanism comprises a first lock lever 24 having a substantially V shape and a second lock lever 26 having a substantially M shape. The first lock lever 24 has a rotation center 24a provided at a substantially central portion.
Is rotatably supported by engaging with a boss 28 provided on a side wall of the main body housing 10. Also,
On one surface side (the shift lever side during assembly) of one end of the first lock lever 24, a pin-shaped protrusion provided on the upper body portion of the preparation direction swing block 16 (the lower portion as a whole shift lever 12). A first side wall contact portion 24b to which the end surface of 16a can contact is provided. Further, a first pin receiving surface 24c to which the side surface of the protrusion 16a can abut is provided in the rotation direction on the same end side as the first side wall contact portion 24b.
Similarly, the second lock lever 26 is rotatably supported by a rotation center 26 a provided on one end side engaging a boss 30 provided on a side wall of the main body housing 10. A second side wall contact portion 26b is provided on one surface side of one end (on the side of the shift lever at the time of assembly) to which the end surface of the projection 16a can contact.
A second pin receiving surface 26c to which the side surface of the protrusion 16a can abut is provided in the rotation direction on the same end side as b. The first and second lock levers 24 and 26 having the above-described shape.
Are connected by engaging an engagement pin 24d provided on the other end side of the first lock lever 24 with an engagement hole 26d provided at a substantially central portion of the second lock lever 26, and move in conjunction with each other. be able to. Further, a drive pin 24e is provided on the back side of the engagement pin 24d of the first lock lever 24, and a solenoid ring 34 provided at the tip of the sliding shaft of the solenoid 32 engages with the drive pin 24e. FIG. 2 shows a state where the first and second lock levers 24, 26 and the like are assembled. Thus, the driving force of the solenoid 32 is transmitted to the link mechanism including the first and second lock levers 24 and 26.

The shift lock will be described below with reference to FIGS. 1 and 2 and FIG. 3 showing the operating states of the first and second lock levers 24 and 26. In this embodiment, an example in which the shift lock is performed when the shift lever 12 moves from the P position (parking position) to the R position (reverse position) and when the shift lever 12 moves from the N position (neutral position) to the R position. .

The solenoid 32 and the solenoid ring 3
4 is connected via a spring 36. Therefore, when the solenoid 32 is not energized, the solenoid ring 34
Urges the first and second lock levers 24 and 26 in the reverse C direction in FIG. The first lock lever 24 urged in the reverse C direction rotates in the reverse D1 direction about the rotation center 24a, and the second lock lever 26 rotates in the reverse D2 direction about the rotation center 26a. That is, when the solenoid 32 is not excited, the first and second lock levers 24 and 26 always move in a direction approaching each other. FIG. 3A shows a state of approaching. At this time, the first side wall contact portion 24b of the first lock lever 24 is located on the swing line p in the shift change preparation direction at the position P shown in FIG.
The side wall contact portion 26b is disposed so as to be located on the swing line n in the shift change preparation direction at the N position. The solenoid 32 is excited only when the brake pedal is depressed when the shift lever 12 is at the P position, that is, when a parking detection switch (not shown) is turned on, and the shift lever 12 is at a position other than the P position. At the time, the vehicle speed is equal to or lower than a predetermined speed (for example, 5 km / h including a stop state).
Excitation is performed in the following case).

First, immediately after starting the engine, the shift lever 1
When the brake pedal 2 is located at the home position side (P1 side) of the P position and the brake pedal is not depressed, the solenoid 32 is in the non-excited state as described above. Energized,
The first side wall contact portion 24b of the first lock lever 24 is located on the swing line p. When the shift lever 12 is to be swung in the direction of arrow B2, the end face of the projection 16a provided on the body of the preparatory direction swing block 16 contacts the first side wall contact portion 24b, and the shift lever 12 is moved to the R position. The shift lever 12 is prevented from moving to the shift preparation position (the swing position P2) for shifting to the shift position, and the shift lever 12 can be shift-locked to the P1 side of the P position. Can be prevented.

Next, when the shift lever 12 is at the P position,
When the brake pedal is depressed, the solenoid 32 is excited, the solenoid ring 34 moves in the direction of arrow C in FIG. 3 (a), and the first and second lock levers 24, 26 are centered on the respective rotation shafts 24a, 24b. And rotate to arrows D1 and D2
Move in the direction, that is, in the direction away from each other,
5, the first lock lever 24 is disengaged from the swing line p at the position P, and the shift lever 12 can swing in the direction of arrow B2 in FIG. When the shift lever 12 moves to the swing position P2, the projection 16a is positioned between the first and second lock levers 24 and 26 as shown in FIG. Direction) to shift to the R position. Shift lever 1
After the brake pedal 2 is moved to the swing position P2 and the brake pedal is released, the solenoid 32 is de-energized, and the first and second solenoids are turned off.
The lock levers 24 and 26 move in the reverse D1 and D2 directions (directions to close each other), but as shown by the dotted line in FIG. 3B, the side surface of the projection 16a comes into contact with the second pin receiving surface 26c, Since the lock lever 26 can be pushed and moved in the direction D2, it does not prevent the shift lever 12 from swinging from the R position to the N position, that is, the shift selection direction. Normally, when shifting from the R position to the N position, since the vehicle is in a low speed state or a stopped state, the solenoid 32 is excited and the first and second lock levers 24 and 26 are in the state of FIG. ing. Further, in the shift pattern of the present embodiment, the link mechanism and the protrusion 16a are in a non-contact relationship from the position N to the position D to position L, and the shift can be freely changed.

Next, in the normal running state, the solenoid 32
Is in a non-excited state, and since the projection 16a is disengaged from the link mechanism as described above, when the shift is changed from the position D to the position N (D → N2 in FIG. 5), the second lock lever 26 swings. Returning to the moving line n, FIG.
(A) shows the state shown by the two-dot chain line. (N2 position). In this state (when the vehicle speed is not lower than the predetermined speed),
When an attempt is made to shift from the N position to the R position, the swing of the shift lever 12 is prevented by the contact between the end face of the projection 16a and the second side wall contact portion 26b, and the shift change to the R position is prohibited ( Shift lock in N position,
(So-called R inhibit) to prevent engine and gear damage.

On the other hand, when the vehicle speed falls below a predetermined speed, the solenoid 32 is excited and the first and second lock levers 24,
Reference numeral 26 indicates the state shown in FIG. 3B, and allows the shift lever 12 to swing. Thereafter, the shift change from the N position → the R position → the P position is similar to the case of the P position → the R position → the N position.
Abuts on the pin receiving surface 24c and sets the first lock lever 24 to D1.
Direction, the shift lever 1 can be moved even if the link mechanism is closed due to the vehicle speed exceeding a predetermined speed.
2 does not prevent swinging in the shift selection direction.

As described above, since the shift lock is realized at a plurality of positions by driving the link mechanism by the single solenoid, the number of parts can be reduced, and at the same time, the size and weight of the shift lock mechanism itself can be reduced. Can be performed.

In this embodiment, the shift lock is performed when the shift lever 12 shifts from the P position to the R position and when the shift lever 12 shifts from the N position to the R position. By taking the shift pattern shown in
P position → R position and 2 position (2nd) → L position (low)
Shift lock can be performed when shifting to. In other words, a shift change from the second position to the L position applies a large load to the occupant and the engine because abrupt engine braking is applied. Therefore, if the present invention is applied from the 2 position to the L position, a shift lock that enables a shift change only when the vehicle speed is equal to or lower than a predetermined speed or an engine speed can be realized with a small and easy configuration. . Further, if a shift pattern as shown in FIG. 4B is taken, a shift lock can be performed when shifting from the N position to the R position and from the 2 position to the L position. However, in the case described above,
It is necessary to change the shape of the second lock lever and adjust the contact relationship between the end face of the projection and the side wall contact portion and the contact relationship between the side surface of the projection and the pin receiving surface. 4 (a) and 4 (b)
The shift patterns other than those shown in (1) and (2) can be appropriately selected, and a plurality of shift locks at desired positions can be realized with a small and easy configuration.

[0024]

As described above, according to the first aspect of the present invention, a plurality of side wall contact portions provided in parallel with the shift lever position selection direction by a single link mechanism driving source. Having a first lock lever and a second lock lever
The link mechanism consisting of bars of said position selecting direction
It opens and closes on a plane parallel to the pivoting surface of the left lever . The result
As a result, the projection provided on the shift lever abuts against the side wall abutment of the link mechanism, thereby selectively restricting the swing of the shift lever in the shift change preparation direction at a plurality of positions in the position selection direction. it can.

According to the second aspect of the present invention, the substantially V-shaped first lock lever in which the link mechanism operates in conjunction.
And a second lock lever having a substantially M-shape. The opening and closing operation is performed by the operation of a link mechanism driving source. When the shift lever moves from the parking position to the reverse position in the open position or the closed position, and when the shift lever moves from the neutral position to the reverse position. the swinging of the shift change preparation direction shea shift lever in either two places with when moving from the time the 2nd position to the low position to move to the position can be selectively regulated.

Accordingly, unlike the related art, there is no need to provide a separate drive source and a regulating member for each swing regulation position, and the shift lock structure can be reduced in size, simplified, and cost reduced.

[Brief description of the drawings]

FIG. 1 is an assembly view showing main components of a shift lever having a shift lock structure according to the present invention.

FIG. 2 is an assembled perspective view showing an assembled state of a lock lever constituting a link mechanism of a shift lock structure according to the present invention.

FIG. 3 is an explanatory diagram illustrating an operation state of a lock lever included in a link mechanism of a shift lock structure according to the present invention.

FIG. 4 is another example of a shift pattern to which the shift lock structure according to the present invention can be applied.

FIG. 5 is an example of a zigzag shift pattern.

FIG. 6 shows a shift lock structure used for a conventional zigzag shift pattern.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main body housing 12 Shift lever 16 Preparation direction swing block 16a Projection part 20 Selection direction swing block 24 1st lock lever 24b 1st side wall contact part 26 2nd lock lever 26b 2nd side wall contact part 32 Solenoid

Claims (2)

(57) [Claims] 1. A shift lock structure of a shift lever capable of swinging in a position selection direction for selecting a shift position of an automatic transmission vehicle and in a shift change preparation direction substantially orthogonal to the position selection direction at a predetermined shift position. A projection provided below the shift lever on the shift change preparation direction side, and a plurality of side wall contact portions provided in parallel with the position selection direction of the shift lever and contacting the projection .
A link mechanism comprising a first lock lever and a second lock lever , wherein the shift lever swings in the position selection direction.
Opening / closing operation on a plane parallel to the surface, abuts the protrusion and the side wall
And Brighter link mechanism selectively regulated to at a plurality of positions swung position selection direction to shift change prepare direction of the shift lever by the parts abut, a single link mechanism drive for opening and closing said link mechanism A shift lock structure for a shift lever, comprising: a source; 2. A shift lock structure of a shift lever according to claim 1, wherein the link mechanism is substantially interlocked operation
V-shaped first lock lever and substantially M-shaped second lock
The shift lever is shifted at one of two positions: when the shift lever moves from the parking position to the reverse position, when the shift lever moves from the neutral position to the reverse position, and when it moves from the second position to the low position. A shift lock structure for a shift lever, wherein the shift lever is opened and closed so as to selectively restrict swinging in a change preparation direction.