JPH0687344A - Shift lock device for automatic transmission for vehicles - Google Patents

Abstract

(57) [Abstract] [Purpose] The lock plate is mechanically operated according to the depression of the brake pedal without causing problems such as an increase in the depression resistance of the brake pedal and an excessive pulling of the connecting member. A link member 20 whose base end is swingably supported by a support shaft 18 as a fulcrum, and a connecting member 15 is connected to a tip end thereof is connected to an operating mechanism 16 of a lock member 13, and the link member 20. Urging member 21 for urging the lock member 13 to swing in the unlocking direction of the lock member 13, a regulating portion 24 for regulating the swinging displacement of the link member 20 in the unlocking direction, and the regulating portion 24. Link member 2 by
There is provided a drive lever 18 for moving the regulation position of 0 in the urging direction of the urging member 21 in response to the depression operation of the brake pedal 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lock device for an automatic transmission for a vehicle, which locks a shift lever of the automatic transmission at a parking position.

[0002]

2. Description of the Related Art Normally, a vehicle having an automatic transmission allows the engine to be started when a shift lever is in a parking position detected by a detecting means in order to ensure safety when the vehicle starts. It has a key lock mechanism. Further, when it is detected by the detection means that the brake pedal is depressed, the shift lever is allowed to be operated to the drive position, and in other cases, the shift lever is operated from the parking position to the drive position. It has been practiced to provide a shift lock device including an electromagnetic actuator that regulates the above.

When various detecting means and electromagnetic actuators are used as described above, the structure becomes complicated and the manufacturing cost becomes high.
As disclosed in Japanese Unexamined Patent Publication No. 38-38, a lock plate for locking a guide pin provided on a shift lever at a parking position and a cable having one end connected to the lock plate and the other end connected to a brake pedal. There is known a shift lock device in which the lock plate is mechanically rocked and displaced to the unlocked position through the connecting member in response to the depression operation of the brake pedal.

[0004]

The shift lock device has a spring for urging the lock plate toward the lock position of the guide pin, and unlocks the lock plate by the brake pedal depressing force against the urging force. Since it is configured to be oscillated to the position, there is a problem that when the amount of depression of the brake pedal increases, the amount of deformation of the spring also increases and the depression resistance of the brake pedal increases. In addition, if a situation arises in which the brake pedal has to be depressed greatly due to poor brake adjustment, etc., a connecting member consisting of a cable that moves the lock plate in the unlocking direction in response to this should be provided more than necessary. There is a problem of being pulled.

The present invention has been made in order to solve the above-mentioned problems, and does not cause problems such as an increase in the pedaling resistance of the brake pedal and an excessive pulling of the connecting member, and the lock plate corresponding to the depression of the brake pedal. It is an object of the present invention to provide a shift lock device for an automatic transmission for a vehicle, which can mechanically operate the vehicle.

[0006]

The invention according to claim 1 is
A lock member that locks the shift lever of the automatic transmission to the parking position, an actuating mechanism that moves the lock member to the unlock position according to the depression force of the brake pedal, and a connecting member that connects the actuating mechanism to the brake pedal. A shift lock device for an automatic transmission for a vehicle, comprising: a link in which a base end portion is swingably supported by a supporting shaft as a fulcrum, and the connecting member is connected to a tip end portion of the operation mechanism. A member, an urging member that urges the link member to swing and move in the unlocking direction of the lock member, and a restricting portion that controls the link member to swing and move in the unlocking direction of the lock member. And a drive unit for moving the restriction position of the link member by the restriction unit in the urging direction of the urging member according to the depression operation of the brake pedal. Than it is.

According to a second aspect of the present invention, a link member that constitutes an actuating mechanism is swingably connected to a first link that is swingably supported by a support shaft as a fulcrum, and a tip end portion of the first link. And a connecting member is connected to the tip end portion of the second link, and the first link is urged to swingly displace the second link in the locking direction of the lock member. A second urging member and a second link that restricts the second link from swinging and displacing in the locking direction of the lock member.
The regulation section is provided.

[0008]

According to the invention described in claim 1, when the brake pedal is depressed at the time of starting the vehicle, the restricting portion is driven by the operating mechanism to release the restricting state of the link member, and the link member is urged. The lock member is rockably displaced in the unlocking direction according to the biasing force of the member. Along with this, the connecting member is driven and the lock member is displaced to the unlock position, and the shift lever can be operated from the parking position to the drive position.

According to the second aspect of the present invention, the second urging member provided on the first link urges the second link in the unlocking direction, and the urging force is locked via the connecting member. By being transmitted to the member, the lock member is supported at the lock position during parking. When the lock member is swingably displaced from the lock position to the lock release position according to the operation of the shift lever, the second member is correspondingly moved.
The second link is pivotally displaced in the unlocking direction against the urging force of the urging member.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a driving operation portion of a vehicle equipped with a shift lock device for an automatic transmission for a vehicle according to an embodiment of the present invention. A lever 2, a brake pedal installed in front of the driver's seat, and a guide plate 3 mounted on the upper surface of the vehicle body 4. The shift lever 1 is swingably supported by a support shaft 6 provided on a bracket 5 protruding from the lower surface of the vehicle body 4 as a fulcrum.

The shift lever 1 has a column 7 and a guide pin 8, and when the guide pin 8 is engaged with a locking position provided in a positioning hole 9 formed in the guide plate 3, The shift lever 1 is locked at a predetermined range position. Guide pin 8 above
Is urged upward by an urging means (not shown) including a compression spring provided on the column 7 of the shift lever 1.
Further, the guide pin 8 is pushed downward together with the elevating rod 12 installed in the support column 7 in response to the push operation of the push button 11 provided on the operation knob 10 of the shift lever 1, so that the positioning is performed. The locking state with respect to the hole 9 is released.

The positioning hole 9 of the guide plate 3 is
A P range (parking stage) position provided at the front end of the upper side, an R range (reverse stage) position sequentially formed behind it, a D range (forward stage) position, and a 2 range (2nd stage) It has a position and a one-range position (first gear position). The guide pin 8 moves to each range position of the positioning hole 9 according to the operation of the shift lever 1, and is locked to the P range position when the vehicle is parked.

Further, on the side of the guide plate 3,
A lock member 13 that locks the shift lever 1 to the P range position during parking and a drive lever 14 that drives a key lock mechanism (not shown) are installed. The key lock mechanism prohibits the ignition key attached to the key cylinder (not shown) from being pulled out when the guide pin 8 of the shift lever 1 is locked at a position other than the P range position. .

The lock member 13 has the bracket 5
The guide pin 8 is swingably supported by the lever and is connected to the actuating mechanism 16 of the brake pedal 2 via a connecting member 15 made of a cable, and prevents the guide pin 8 locked at the P range position from descending. It is configured so as to be swingably displaced between a locked position and a non-locked position that allows the guide pin 8 to descend.

That is, the lock member 13 normally operates in response to the urging force of the second urging member 28 formed of a torsion coil spring provided in the actuating mechanism 16 as will be described later.
It is supported at a lock position facing the lower surface of the guide pin 8 locked at the range position. In addition, the brake pedal 2
When is depressed, depending on the driving force transmitted through the actuating mechanism 16 and the connecting member 15, the lock member 13 is moved to the position retracted to the side of the positioning hole 9 as shown in FIG. The guide pin 8 is oscillated and displaced so that the guide pin 8 is allowed to descend.

The operating mechanism 16 is, as shown in FIG.
A support shaft 18 protruding from a support bracket 17 that supports the brake pedal 2, a drive lever 19 rotatably supported by the support shaft 18, and an end portion of the connecting member 15 are connected to the tip portion. At the same time, a link member 20 whose base end is swingably supported by the support shaft 18, and a biasing member 21 for biasing the link member 20 to swing and move in the unlocking direction of the lock member 13. And have.

The drive lever 19 is provided with an engaging hole 23, which is an elongated hole into which a pin 22 projecting from the side surface of the brake pedal 2 is engaged, and an upper surface of the link member 20, which is in contact with the upper surface thereof. Of the lock member 13, that is, the rocking displacement of the lock member 13 in the unlocking direction, is restricted by a protrusion 2.
And 4 are provided.

When the brake pedal 2 is stepped on in the direction shown by the arrow in FIG. 4, the stepping force is transmitted to the drive lever 19 via the pin 22, and the drive lever 19 is counterclockwise in the figure. It is designed to be rotated in the direction. Further, as the drive lever 19 rotates, the regulating portion 24 moves up and the regulated state of the link member 20 is released. Therefore, the link member 20 is oscillated and displaced according to the urging force of the urging member 21. The locking member 13 is swingably displaced to the lateral retracted position by pulling the connecting member 15 (see FIG. 2).

The urging member 21 comprises a torsion coil spring whose one end is locked to the support bracket 17 and the other end is locked to the lower side of the link member 20, and the brake pedal 2 is provided. The urging force is set in advance so that the force for swinging and displacing the link member 20 disappears when the lock member 13 in the lock position moves to the side retracted position in response to the stepping operation.

The link member 20 has a first link 25 swingably supported by the support shaft 18, and a second link rotatably connected to a support pin 26 projecting from the tip of the first link 25. The link 27 is formed, and the end of the connecting member 15 is connected to the tip of the second link 27. The first link 25 is provided with a second urging member 28 formed of a torsion coil spring that urges the second link 27 to swing and move in the locking direction of the lock member 13, and the second link 27 is also provided. A second restricting portion 29, which is a protruding piece that restricts the swinging displacement of the lock lever in the locking direction, is provided in a protruding manner.

The drive lever 1 of the key lock mechanism described above.
As shown in FIG. 2, a support shaft 30 serving as a swing fulcrum is provided at the base end of the shift lever 4, and the shift lever 1 is provided at the tip end thereof.
Is formed with an engaging recess 31 with which the guide pin 8 of FIG. 1 is engaged, and an end of a connecting member 32 formed of a cable connected to a key lock mechanism of a key cylinder provided in a steering column or the like (not shown) is connected Has been done. Further, the drive lever 14 is normally engaged with the engaging recess 3 in accordance with the urging force of an urging means such as a torsion coil spring (not shown).
1 is locked at a position facing the lower side of the P range position of the positioning hole 9 formed in the guide plate 3.

When the vehicle is parked, the shift lever 1 is operated to a position corresponding to the P range position, and the push button 1 is pushed.
When the pushing state of No. 1 is released, the guide pin 8 engaged with the engaging recess 31 rises, and accordingly, the drive lever 14 uses the support shaft 30 at the base end as a fulcrum. It is designed to oscillate in a clockwise direction. When the connecting member 32 is pushed along with the swing displacement of the drive lever 14, the key lock mechanism is configured to change from the ignition key withdrawal prohibited state to the withdrawal allowed state.

In the above structure, when the parked vehicle is brought into the traveling state, first the brake pedal 2
By depressing, each wheel is brought into a braking state, and the drive lever 19 of the actuating mechanism 16 is rotated counterclockwise in the drawing in response to the depressing operation of the brake pedal 2 to restrain the link member 20 by the restricting portion 24. Cancel the state. As a result, the link member 20 rotates counterclockwise in FIG. 1 in accordance with the urging force of the urging member 21, and the lock member 13 is locked by the lock member 13 shown in FIG. The rocking displacement from the position to the unlocked position shown in FIG.

Therefore, after the guide pin 8 of the shift lever 1 locked in the P range position is pushed down to release the locked state, the shift lever 1 can be operated to the drive position such as the D range position. Becomes In addition, the drive lever 14 of the key lock mechanism rotates counterclockwise in FIG.
The end of No. 2 is pulled to the left in the figure, the key lock mechanism (not shown) is locked, and the ignition key is prohibited from being removed.

As described above, the actuating mechanism 1 for converting into the pulling force of the connecting member 15 according to the depression force of the brake pedal 1
6 is provided and the lock member 13 supported at the lock position by the connecting member 15 is swingably displaced to the lock release position. Therefore, the shift lever 1 can be operated only when the brake pedal 2 is depressed with a simple structure. It is allowed to operate in the drive position. As a result, it is possible to reliably prevent the occurrence of an erroneous operation in which the departure operation is performed in a state where the safety at the time of starting the vehicle is not ensured.

The link member 20 of the actuating mechanism 16 is also provided.
Since the urging member 21 for urging the brake pedal 2 is provided, and the pulling force is applied to the connecting member 15 according to the urging force of the urging member 21, the stepping force of the brake pedal 2 is increased. The locking member 13 can be swingably displaced from the locked position to the unlocked position without the need to do so.

Moreover, when the urging force of the urging member 21 disappears, the oscillating displacement of the link member 20 is stopped, and as shown in FIG. 4, the brake pedal 2 is greatly depressed to drive. Even when the lever 18 is largely swing-displaced, the coupling member 15 is unnecessarily corresponding to this.
It is possible to prevent an excessive load from being applied to the connecting member 15 without causing a situation where the connecting member 15 is pulled.

Further, in the above embodiment, the link member 20 of the actuating mechanism 16 is constituted by the first link 25 on the base end side and the second link 27 on the tip end side, and the first link 2
Since the second urging member 28 for urging the second link 27 and the lock member 13 in the lock direction is provided in FIG. 5, there is only one operating portion for oscillating the lock member 13 between the lock position and the unlock position. In summary, the structure can be made compact and the assembling work can be simplified.

When the shift lever 1 is operated from the drive position to the parking position, the lock member 13 supported at the lock position is pushed by the guide pin 8 and forcibly moved to the unlock position. In this case, as shown in FIG. 5, the second link 27 rotates counterclockwise in the figure against the urging force of the second urging member 28, so that the rocking displacement of the lock member 13 is prevented. The accompanying movement of the connecting member 15 is absorbed. Therefore, it is possible to prevent the situation in which the brake pedal 2 is moved by being pushed by the connecting member 15, and thus the driver's discomfort can be prevented.

[0030]

As described above, the present invention provides a shift lock device having an operating mechanism and a connecting member for mechanically moving the lock member of the shift lever to the unlocked position in accordance with the depression force of the brake pedal. Since the urging member for urging the link member of the actuating mechanism in the unlocking direction is provided, and the pulling force is applied to the connecting member according to the urging force of the urging member, the depressing force of the brake pedal is set. It is possible to swing the lock member from the locked position to the unlocked position without increasing the lock position.

Further, since the swinging displacement of the link member is stopped when the urging force of the urging member disappears, even if the brake pedal is greatly depressed, it is unnecessarily necessary. It is possible to prevent the situation where the connecting member is pulled. Therefore, even when a situation in which the brake pedal is greatly depressed due to poor brake adjustment or the like, it is possible to prevent an excessive load from acting on the connecting member, and a large force is required. There is an advantage that the brake pedal can be depressed and operated.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a shift lock device for an automatic transmission for a vehicle according to the present invention.

FIG. 2 is a front view showing a state where a guide pin is pushed down.

FIG. 3 is a perspective view showing a configuration of an operating mechanism.

FIG. 4 is a front view showing an operating state of the operating mechanism when the brake pedal is depressed.

FIG. 5 is a front view showing an operating state of an operating mechanism when a shift lever is operated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 shift lever 2 brake pedal 13 locking member 15 connecting member 16 actuating mechanism 18 support shaft 19 drive lever (driving part) 20 link member 21 biasing member 24 regulating part 25 first link 27 second link 28 second biasing member 29 Second regulating member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takahiro Kubozaki 1-14 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Delta Industrial Co., Ltd.

Claims (2)

[Claims] 1. A lock member for locking a shift lever of an automatic transmission to a parking position, an operating mechanism for moving the lock member to an unlocked position in response to a stepping force of the brake pedal, and the operating mechanism for the brake pedal. A shift lock device for an automatic transmission for a vehicle, comprising: a connecting member connected to a base member of the operating mechanism, a base end portion of which is swingably supported by a supporting shaft as a fulcrum, and a distal end portion of the connecting member. A link member connected to each other, an urging member that urges the link member to swing and displace in the lock release direction of the lock member, and the link member swings and displaces in the lock release direction of the lock member. And a drive for moving the regulating position of the link member by the regulating part in the urging direction of the urging member in response to the depression operation of the brake pedal. And a shift lock device for an automatic transmission for a vehicle. 2. A first link in which a link member constituting an actuating mechanism is swingably supported with a support shaft as a fulcrum, and a second link swingably connected to a tip end portion of the first link. A second urging member configured to connect the connecting member to the tip end portion of the second link and urge the first link to swingly displace the second link in the locking direction of the lock member. 2. The shift lock device for an automatic transmission for a vehicle according to claim 1, further comprising: a second restricting portion that restricts swinging displacement of the second link in a locking direction of the lock member.