JPH06206526A - Controller of parking brake for vehicle - Google Patents

Abstract

PURPOSE:To unlock a parking brake lever by engine start operation by connecting a lock lever to the plunger of a solenoid mechanism, connecting coils to a power source through an ignition switch, and at the same time connecting the plunger to a cam plate turning by means of an ignition key. CONSTITUTION:A lock lever 26 to retain a parking brake lever 5 in a pulled state is connected to the plunger of a solenoid mechanism 38, and the locking coil 68 and the unlocking 69 of the solenoid mechanism 38 are connected to a power source through an ignition switch 4, and at the same time the plunger is coupled to a cam plate that is turned with a key 46. As a result, when the ignition switch 4 is operated to start or stop an engine, the locking and unlocking of the parking brake lever 5 can be automatically conducted simultaneously. Also, without relation to the ignition switch 4, locking and unlocking can be conducted by manual operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle parking brake control device applied to an open car.

[0002]

2. Description of the Related Art The roof is made of hood cloth or resin plate,
A so-called open car, which is configured so that it can be attached to and detached from the vehicle body, can be equipped with a roof to lock the door when parking, but if you leave the car without the roof and leave the car, it will be easier from above. Since you will be able to get in the car, you may be stolen by releasing the parking brake. Therefore, in order to prevent this, there is one in which a locking device is attached to the parking brake lever and the parking brake is locked at the position where the parking brake is applied (see, for example, Japanese Utility Model Laid-Open No. 58-82976).

In such a structure in which the parking brake is locked at the position where the parking brake is applied, if the parking brake is pulled during parking and locked in that state, the parking brake cannot be released unless the ignition key is provided, so it is stolen. Although it is possible to avoid the encounter, since the device for this has nothing to do with the mechanism of the ignition switch for starting the engine, the following inconvenience was actually caused.

That is, since the device for locking the parking brake has a separate structure from the ignition switch for starting the engine, the ignition switch is turned off during parking and then locked, and unlocked during driving. The operation is complicated because it requires a two-step operation of turning on the ignition switch.

Since the device for locking the parking brake is not linked with the ignition key for starting the engine, the operator often forgets to operate it during parking and is easily stolen. Also, when I was driving, I realized that I had forgotten to unlock the parking brake lever by operating the engine by operating the ignition switch, and then stopped the engine once it was unlocked and restarted the engine. There was also. This means that it takes a long time to start the engine and also wastes battery power.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate many inconveniences that have been caused in the prior art because the locking device for the parking brake and the ignition switch have separate structures. Provided is a parking brake control device for a vehicle, which enables unlocking of the parking brake lever depending on the operation of starting the engine, and unlocks the parking brake lever by manual operation. Is what you are trying to do.

[0007]

As a means for solving the above problems, the present invention connects a lock lever for holding a parking brake lever in a pulled state to a plunger of a solenoid mechanism, and In addition to being connected to a power source via an ignition switch, the plunger is connected to a cam plate which is rotated by an ignition key.

[0008]

With this structure, the parking brake lever can be unlocked by operating the ignition switch to start the engine,
Further, the parking brake lever can be locked by the operation of stopping the engine when the vehicle is stopped.
Further, by operating the rotating cam plate with the ignition key, it is possible to lock and unlock the lock regardless of the ignition switch as in the conventional case.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 6 shows the interior structure of a vehicle to which the present invention is applied. 1 is an instrument panel, 2 is a steering wheel, 3 is a column, 4 is an ignition switch, 5 is a parking brake lever, and 6 is a manual key. It is a locking device. The base end of the parking brake lever 5 is pivotally mounted inside the console box 7. The parking brake is activated by grasping and pulling the grip 8, and the parking brake is released by pushing the lock release button 9 down. It is a normal one that goes into a state.

FIG. 1 shows details of a portion of a parking brake lever 5 in an embodiment of the present invention, and FIG. 2 shows a plane thereof. In these figures
10 is a floor panel, which is a portion between two front seats. A bracket 11 is attached to this portion of the floor panel 10 with bolts 12, and a base end portion of the parking brake lever 5 is attached to a shaft 13 at an upright portion of the bracket 11.
It is rotatably attached by a shaft. At the lower end of the parking brake lever 5, the base end of the brake cable 14 is an axis.
The shaft 15 is pivotally attached, and its tip is connected to a parking brake mechanism for a rear wheel (not shown).

As shown in FIG. 1, the ratchet teeth 16 are engraved on the bracket 11, and the ratchet teeth 16 are
One end is pulled by a spring 18 fixed to a shaft 17, and a ratchet pawl 20 that rotates about the shaft 19 is engaged. Since the shaft 19 penetrates the parking brake lever 5, the ratchet pawl 20 is engaged with the ratchet teeth 16 by pulling the parking brake lever 5 while gripping the grip portion 8 to form a locked state.

A tip of a release rod 21 is fixedly attached to the lock release button 9, and is attached by a spring 22 together with the lock release button 9 in the rightward direction in the figure, that is, in the direction in which the lock release button 9 projects from the grip portion 8. It is energized. The base end of the release rod 21 is bent in an L-shape, and its bent portion 23 faces a step portion 24 formed in a part of the ratchet pawl 20. A stopper pin 25 prevents the release rod 21 from moving to the right more than necessary by the spring 22.

Ratchet teeth 16 at the upper part of the bracket 11
A base end of a lock lever 26 is rotatably mounted on a shaft 27 (see a state indicated by a broken line) in the vicinity of. The lock lever 26 has a letter-T shape with a part thereof protruding,
The projecting portion 28 faces the bending portion 23 of the release rod 21. As a result, since the release rod 21 cannot move to the left when the lock lever 26 is in the state shown by the solid line, it cannot be unlocked, and the release rod 21 moves to the left when the state shown by the broken line is reached. Since it is possible to unlock, you can unlock.

A base end of a lock cable 29 is rotatably locked to the lock lever 26 by a stopper 30. The outer cover 31 of the lock cable 29 is attached to the bracket 11 by the nut 32.
Is fixed to the upright portion 33. Lock cable 29 is the outer skin
It is bent downward together with 31 to reach the lower portion of the floor panel 10, and is coupled via a coupling 37 to a rod 36 in a case 35 attached to the lower surface of the floor panel 10 with a bolt 34.

Inside the case 35, a polar type solenoid mechanism 38 is attached by bolts 39. This solenoid mechanism 38 is provided with a coil and a plunger (not shown), which will be described later, which is energized by an electric wire 40, and the plunger is moved by an electromagnetic force generated when the coil is energized, and by a built-in permanent magnet or the like, It is designed to be self-held in a locked position and an unlocked position. A rod 36 is connected to the plunger so that when the rod 36 moves, the rod 36 moves together. The rod 36 penetrates the solenoid mechanism 38 and is bent at its tip.
41 is in a hole 44 of a cam plate 43 of a manual key lock device 42 provided adjacent to the solenoid mechanism 38 (see FIG. 2).

As shown in FIG. 2, a key insertion hole 45 is provided on the upper surface of the key lock device 42 so that a key 46 can be inserted. The key 46 is a cylinder key for an ignition switch for starting the engine, as will be described later. On the outer peripheral portion of the key insertion hole 45 of the key lock device 42, a point 47 indicating an intermediate position, a point 48 indicating "lock" and a point 49 indicating "unlock" are engraved. These points are in the respective displayed states when the key 46 is inserted into the key insertion hole 45 and oriented in the respective directions.

Details of the key lock device 42 will be described with reference to FIGS. 1, 2 and 3. This key lock device 42
When the key 46 is inserted into the key insertion hole 45 and the key 46 is aligned with the points 47, 48 and 49 described above, the cam plate 43 is moved to the position shown in FIG.
The postures a to c will be taken. As shown in FIG. 1, a shaft portion 50 is provided in the lower portion of the key lock device 42, and an intermediate portion of a linear return spring 51 is wound around the shaft portion 50 several times.

Both ends of the return spring 51 are bent at right angles, and the bent portions 52 and 53 are in pressure contact with both sides of the cam plate 43. By this pressure contact, a force that always returns to the posture of a in FIG. 3 is applied to the cam plate 43. Reference numerals 54 and 55 are stoppers for restricting the rotation range of the cam plate 43 (see the illustration by the broken line in FIG. 2).

FIG. 4 shows the front of the ignition switch 4. As shown in this figure, "lock", "lock P", "accessory", "on", "unlock P" and "start" are provided on the outer peripheral portion of the key insertion hole 56.
Points 57, 58, 59, 60, 61, 62 indicating the respective points are engraved. For these points, insert the key 46 into the key insertion hole 56,
When turned in each direction, they are in the respective displayed states. Note that "lock" is a lock that makes the steering wheel unrotatable as in the conventional case, "lock P" is a lock that holds the parking brake lever 5 in a pulled state, and "unlock P" is that the parking brake lever 5 is held. It represents unlocking so that it can be returned from the pulled state.

FIG. 5 shows an electrical connection circuit between the ignition switch 4 and the solenoid mechanism 38.
In this figure, reference numeral 63 denotes a movable contact that rotates together with the key 46 when the key 46 is inserted into the key insertion hole 56 of the ignition switch 4, and a fixed contact 64 when the key 46 is directed to the point 58 of "Lock P". To contact the fixed contact 65 when the key 46 is directed to the point 61 of the “unlock P”.

The movable contact 63 is connected to a positive power source terminal 66 connected to the positive electrode side of a battery (not shown), a locking coil 68 is provided between the fixed contact 64 and the ground circuit 67, and a fixed contact 65. An unlocking coil 69 is connected between the and the ground circuit 67. In addition, the movable contact 63 has any fixed contact.
There are also midpoint positions that are not touched by 64 and 65.

The control device for the vehicle parking brake thus constructed operates as follows. First,
The key insertion hole 56 of the ignition switch 4 (see FIG. 1) is used to get into the parked car and start running.
Insert the key 46 into. The direction of the key insertion hole 56 at the time of this insertion is toward the "lock" point 57 as shown in FIG.

Next, the key 46 is rotated to move the "lock P" point.
58, the "accessory" point 59, the "on" point 60 and the "unlock P" point 61 are passed, and when it is turned to the "start" point 62, the starter motor operates and the engine starts. Then, when the finger is released from the key 46 or the force is released while touching the key 46, a spring (not shown) in the ignition switch 4 causes the key 46 to return to the "ON" point 60. When the key 46 returns to the “on” point 60, the passing “unlock P” point 61 causes the movable contact 63 shown in FIG.
Contacts the fixed contact 65 and the unlocking coil 69 is energized,
The plunger is unlocked and the lock lever 26 is shown in FIG.
Will be held at the unlocked position indicated by the broken line.

When the lock release button 9 of the parking brake lever 5 is pressed here, the bending portion 23 of the release rod 21 rotates the ratchet pawl 20 counterclockwise about the shaft 19 so that the ratchet teeth 16 of the bracket 11 are removed. Let go. As a result, the parking brake 5 can be lowered to the position shown in FIG. 1, and the brake cable 14 is pushed to the left in FIG. 1, so that the parking brake is released.

When the vehicle is stopped and the engine is stopped and the vehicle is parked, the key 46 inserted in the key insertion hole 56 of the ignition switch 4 is changed from the "on" point 60 to the "lock P" point 58. The engine stops by turning it, but at the same time, the locking coil of the solenoid mechanism 38
68 is energized. The force acting on the plunger by this energization pushes the lock cable 29 via the rod 36, and the lock lever 26 is rotated clockwise about the shaft 27,
The locked state shown by the solid line in FIG. 1 is obtained. "Lock P" point 58
The key 46 can be pulled out from the key insertion hole 56 of the ignition switch 4 by turning up to.

When the parking brake lever 5 is pulled upward in this state, the ratchet pawl 20 slides on the ratchet teeth 16 of the bracket 11. When the parking brake lever 5 is fully pulled and the hand is released from the parking brake lever 5, the ratchet pawl 20 engages with the ratchet teeth 16 of the bracket 11. Further, since the lock release button 9 of the lock lever 26 cannot be operated by removing the key 46, the lock lever 26 is rotated clockwise about the shaft 27 so that the parking brake lever 5 cannot be rotated. To

A case where a manual operation is performed without using the solenoid mechanism 38 will be described. When locking, the key 46 is inserted into the key insertion hole 45 of the manual key lock device 42, and is rotated counterclockwise in FIG. And the key
When the direction of 46 is set to the "lock" point 48, the rod 36 having the bending portion 41 in the hole 44 of the cam plate 43 that rotates together with the key 48 is pushed leftward in FIGS. 1 and 2. Through the lock cable 29, the lock lever 26 enters the locked state shown by the solid line in FIG. As a result, the parking brake lever 5 cannot be lowered.

Parking brake lever 5 locked
To manually unlock the key, the key 46 inserted at the "lock" point 48 is rotated clockwise to the "unlock" point 49. As a result, the rod having the bending portion 41 in the hole 44 of the rotating cam plate 43
Since 36 is pulled to the right in FIGS. 1 and 2, the lock lever 26 is rotated to the right in FIG. 1 to the unlocked position shown by the broken line. As a result, the parking brake is released when the lock release button 9 is pushed down.

In the embodiment described above, the locking coil 68 and the unlocking coil 69 are connected to the positive power supply terminal 66 connected to the positive electrode side of the battery via the ignition switch 4, but the timer is provided in this circuit. May be connected in series. If a timer is connected and the energization at the "lock P" and "unlock P" positions of the ignition switch 4 is delayed for a fixed time (for example, 5 seconds), the effect of preventing erroneous operation can be obtained.

[0030]

Since the present invention is a vehicle parking brake control device configured as described above, the operation of the ignition brake key is linked with locking and unlocking of the parking brake, which simplifies the operation. As a result, you will never forget to lock and unlock the parking brake. In addition to this, the locking and unlocking can be performed by a manual operation as in the conventional case regardless of the ignition switch.

[Brief description of drawings]

FIG. 1 is a side view showing a partial cross-section of an embodiment of the present invention.

FIG. 2 is a plan view of what is shown.

FIG. 3 is a plan view showing a cam plate portion of FIGS. 1 and 2.

FIG. 4 is a front view of an ignition switch.

FIG. 5 is a circuit diagram in an embodiment of the present invention.

FIG. 6 is a perspective view showing an arrangement of an ignition switch and the like in an automobile.

[Explanation of symbols]

 4 Ignition switch 5 Parking brake lever 21 Release rod 26 Lock lever 29 Lock cable 36 Rod 38 Solenoid mechanism 42 Key lock device 43 Cam plate 46 Key

Claims (1)

[Claims] 1. A lock lever for holding a parking brake lever in a pulled state is connected to a plunger of a solenoid mechanism, a coil of the solenoid mechanism is connected to a power source via an ignition switch, and the plunger is operated by an ignition key. A control device for a vehicle parking brake, which is connected to a rotating cam plate.