JPH0613976U - Vehicle parking brake forgetting prevention device - Google Patents

Abstract

(57) [Summary] [Purpose] Preventing forgetting to pull the parking brake lever
Prevents forgetting to pull the parking brake of the vehicle
To provide a stop device. [Structure] On with the parking brake lever
Equipped with parking brake mechanism with switch to turn off
On the other hand, the switch-off position where the key 18 can be inserted and removed
It is turned on when it is turned by the key and the key 18.
The key 18 has a switch-on position that cannot be inserted and removed.
Key cylinder 17 and
Ignition switch consisting of cam 20 that rotates on the body
The lock mechanism is provided with a switch 15 and a protrusion 21 on the cam 20.
23 has a lock pin 27 that can be engaged with and disengaged from the protrusion 21.
Switch when the parking brake lever is pulled.
Switch to unlock the key switch
Rotation of the parking brake lever
When operated down, the switch locks and the key
To prevent rotation of 18 to the switch-off position
There is something I did.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a parking brake forgetting prevention device for a vehicle, which is used in a lever-type parking brake mechanism.

[0002]

[Prior art]

 When parking a vehicle, first pull the parking brake lever, activate the parking brake, operate the key to return the ignition switch to the switch off position, remove the key, and then leave the driver away from the vehicle. Is normal.

At this time, in order to prevent forgetting to pull the parking brake lever and to inform the driver whether or not the parking brake lever is pulled, the parking brake lever is pulled when the parking brake lever is pulled. The switch provided on the brake lever mechanism is turned on, and this switch causes the indicator to be displayed.

As shown in FIGS. 5 and 6, the parking brake is configured such that a parking brake lever 2 is vertically rotatable with respect to a parking brake bracket 3 via a pivot shaft 4.

A fan-shaped striker plate 5 is provided at the base end of the parking brake lever 2. The striker plate 5 is provided with an elongated hole 6, and the protrusion 7 of the parking brake lever 2 is engaged with the elongated hole 6 to restrict the rotation range of the parking brake lever 2.

A rack 5 a is formed on the upper end of the striker plate 5. The rack 5a of the striker plate 5 is engaged with the claw portion 8a of the lock latch 8 provided at the base end portion of the parking brake lever 2. The lock latch 8 is made of a flat plate, is formed in a substantially V shape, and is rotatably supported via a shaft 8b. A bar 9 protruding from the tip of the parking brake lever 2 is connected to the lock latch 8 via a shaft 10.

That is, by pushing the tip of the bar 9 into the parking brake lever 2, the engagement between the lock latch 8 and the striker plate 5 is released, and the parking brake lever 2 is pulled / operated. You can do it.

Further, the parking brake bracket 3 is provided with a switch 11 such as a pilot switch which is turned on when the parking brake lever 2 is pulled and is operated to detect that the parking brake lever 2 is pulled. Are configured.

[0009]

[Problems to be solved by the device]

 For example, when parking a vehicle, the parking brake lever 2 is pulled to operate the parking brake mechanism 12. At this time, the pulling of the parking brake lever 2 is detected by the switch 11, the parking brake is displayed on the indicator, and the driver is informed that the parking brake is being applied.

However, when parking in a flat place such as a parking lot, the driver may forget to pull the parking brake lever 2 because the vehicle is still without pulling the parking brake lever 2. .

The present invention has been made in view of the above circumstances, and its purpose is to prevent forgetting to pull the parking brake because the key cannot be pulled out from the ignition switch unless the parking brake is pulled and operated. It is an object of the present invention to provide a device for preventing the forgetting to pull the parking brake of a vehicle that can do so.

[0012]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention comprises a parking brake mechanism having a parking brake lever provided with a switch which is turned on / off by pulling / lowering operation of the lever, while a switch into which a key can be inserted / removed. An ignition switch is provided that includes a key cylinder that has an off position and a switch-on position that is turned on when the key is turned and the key cannot be inserted and removed, and a cam that turns together with the key cylinder. .

An engagement portion is provided on the cam of the ignition switch, and a lock member that can be engaged with and disengaged from the engagement portion is provided. When the parking brake lever is pulled, the switch is unlocked to operate. There is a lock mechanism that allows the key switch to turn to the off position and locks the key when the parking brake lever is operated by lowering it to prevent the key from turning to the switch off position.

[0014]

[Action]

 When the parking brake lever is pulled, the parking brake mechanism is activated and the switch is turned on, and the lock member of the lock mechanism is unlocked at the engagement part of the cam of the ignition switch. Therefore, the key inserted into the key cylinder of the ignition switch can be rotated from the switch on position to the switch off position where the key can be inserted and removed, and the key can be pulled out from the key cylinder.

If the parking brake lever is forgotten to be pulled or the parking brake lever is operated by being lowered, the parking brake mechanism does not operate and the switch is in the off state. The lock member of is locked.

Therefore, the key inserted into the key cylinder of the ignition switch is prevented from turning from the switch on position to the switch off position by the engagement between the engaging portion and the lock member of the lock mechanism, and the key cylinder When I try to pull out the key, I cannot pull it out. Thus, forgetting to pull the parking brake lever is eliminated.

[0017]

【Example】

 Hereinafter, each embodiment of the present invention will be described with reference to the drawings. However, the same components as those of the related art will be designated by the same reference numerals and description thereof will be omitted.

1 to 3 show a first embodiment, and FIGS. 1 and 2 show an ignition switch 15. The ignition switch 15 is provided on a steering column or the like of the vehicle. The ignition switch 15 will be described. 16 is a cylindrical casing, and a key cylinder 17 is rotatably housed inside the casing 16.

A key insertion hole 19 into which the key 18 can be inserted and removed is provided at one end of the key cylinder 17, and the key cylinder 17 is rotated by inserting the key 18 into the key insertion hole 19 and rotating the key cylinder 17. It is designed to rotate integrally.

A cam 20 is integrally provided on the other end of the key cylinder 17, and a projection 21 as an engaging portion is provided on a part of the circumference of the cam 20. The cam 20 is configured to rotate integrally with the key cylinder 17 inside the casing 16.

Further, on the end surface of the key cylinder 16 located around the key insertion hole 19, there is provided a display section for displaying a switch-off position 21a at which the key 18 can be inserted and removed, and a switch-on position where the key 18 cannot be inserted and removed. The display portion for displaying the position 21b is displayed by marking or the like.

That is, the switch-off position 21a is displayed as LOOK or ACC, and the switch-on position 21b is displayed as ON or S (START).

An opening 22 is formed in the side wall of the casing 16 so as to face the protrusion 21 of the cam 20. A lock mechanism 23 is provided on the outer wall of the casing 16 facing the opening hole 22.

Next, the lock mechanism 23 will be described. Reference numeral 24 is a housing, and bearings 25a and 25b are concentrically provided at the lower end and the upper end of the housing 24. The housing 24 is fixed to the casing 16 by a mounting piece 26, and a bearing portion 25 a at the lower end thereof faces the opening hole 22.

Inside the housing 24, a lock pin 27 is provided as a lock member whose both ends are axially supported so as to be vertically movable with respect to the bearing portions 25 a and 25 b. It projects to the inside of the key cylinder 17. An exciting coil 28 is fitted around the outer periphery of the lock pin 27, and the lock pin 27 and the exciting coil 28 form an electromagnet 29.

A flange 30 is fixed in the middle of the lock pin 27, and a spring 31 for urging the lock pin 27 downward is interposed between the flange 30 and the upper surface of the housing 24.

That is, when the electromagnet 29 is not excited, the lock pin 27 is pushed down by the urging force of the spring 31, the lower end is close to the outer peripheral surface of the cam 20, and when the electromagnet 29 is excited, The lock pin 27 is pulled up by the magnetic attraction force, and the lower end of the lock pin 27 is retracted above the protrusion 21.

The exciting coil 28 of the electromagnet 29 is electrically connected to the switch 11 of the parking brake mechanism 12, and the electromagnet 29 is excited when the switch 11 is turned on and demagnetized when turned off. Next, the operation of the parking brake forgetfulness prevention device configured as described above will be described with reference to FIG.

FIG. 3A shows a state where the parking brake lever 2 is pulled and the parking brake mechanism 12 is operated. Since the switch 11 is turned on and the electromagnet 29 is excited, the lock pin 27 is pulled up against the urging force of the spring 31 and retracted above the protrusion 21, so that the lock mechanism 23 is unlocked. is there.

Therefore, the key 18 inserted into the key insertion hole 19 of the key cylinder 17 can be rotated to be rotated from the switch-on position 21b to the switch-off position 21a, and the key 18 can be moved from the key insertion hole 19 to the switch 18. Can be pulled out.

However, when the parking brake lever 2 is forgotten to be operated and the parking brake lever 2 is moved down and operated, the parking brake mechanism 12 is not operating, so the switch 11 is turned off and the electromagnet 29 is demagnetized. .

Therefore, as shown in FIG. 3B, the lock pin 27 is pushed down by the urging force of the spring 31, the lower end portion approaches the outer peripheral surface of the cam 20, and the lock pin 27 interferes with the protrusion 21. In the position, the lock mechanism 23 is in the locked state.

Therefore, in order to pull out the key 18 inserted in the key insertion hole 19 of the key cylinder 17, even if the key 18 is rotated to rotate from the switch-on position 21b to the switch-off position 21a, As shown in FIG. 3 (c), the protrusion 21 comes into contact with the lock pin 27 and the key cylinder 17 cannot rotate from the switch-on position 21b to the switch-off position 21a.

As a result, since the key cylinder 17 cannot be rotated to the switch-off position 21a where the key 18 can be inserted and removed, the key 18 cannot be pulled out from the key insertion hole 19.

At this time, the driver notices that he / she has forgotten to pull the parking brake lever 2, pulls the parking brake lever 2, and unlocks the lock mechanism 23 as shown in FIG. 3A. The key 18 is pulled out from the key insertion hole 19. Therefore, it is possible to prevent the driver from leaving the vehicle by parking without forgetting to pull the parking brake lever 2, and the safety can be further improved. FIG. 4 shows a second embodiment. The same components as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.

In this embodiment, a recess 40 as an engaging portion is provided on a part of the outer peripheral surface of the cam 20 of the key cylinder 17 in place of the protrusion 21 of the first embodiment. The recess 40 is locked by inserting the lower end of the lock pin 27 of the electromagnet 29, and unlocked by removing the lock pin 27 from the recess 40, and the same effect as the first embodiment is obtained. To be

In each of the above-described embodiments, the electromagnet 29 is operated by turning on / off the switch 11 of the parking brake mechanism 12 to pull up the lock pin 27. However, the switch 11 controls the air passage leading to the air cylinder. Alternatively, the solenoid valve may be operated and the lock pin 27 may be pulled up by the air cylinder.

[0038]

[Effect of device]

 Since the present invention is configured as described above, the key cannot be pulled out from the ignition switch unless the parking brake is pulled and the driver can be informed that the parking brake lever has not been pulled. Therefore, it is possible to prevent the driver from leaving the vehicle by parking without forgetting to pull the parking brake lever, and it is possible to further improve the safety.

[Brief description of drawings]

FIG. 1 is a partially sectional side view of an ignition switch showing a first embodiment of the present invention.

FIG. 2 is a perspective view of an ignition switch of the same embodiment.

3 (a), (b) and (c) are explanatory views of the operation of the embodiment.

FIG. 4 is a perspective view of an ignition switch according to a second embodiment of the present invention.

FIG. 5 is a side view showing a conventional parking brake device.

FIG. 6 is an exploded perspective view of a conventional parking brake device.

[Explanation of symbols]

2 ... Parking brake lever, 11 ... Switch, 12
... parking brake mechanism, 15 ... ignition switch, 17 ... key cylinder, 18 ... key, 20a ... switch off position, 20b ... switch on position, 20 ... cam, 21 ... protrusion, 23 ... lock mechanism, 27
... Lock pin (lock member).

Claims (1)

[Scope of utility model registration request] 1. A parking brake mechanism comprising a parking brake lever and a switch which is turned on / off by pulling / pulling down the parking brake lever, a switch-off position at which a key can be inserted / removed, and rotated by a key. A key cylinder that has a switch-on position when the key is turned on and the key is not removable.
The ignition switch is composed of a cam that rotates integrally with the key cylinder, an engaging portion provided on the cam of the ignition switch, and a lock member that is engageable with and disengageable from the engaging portion. When the lever is pulled, the switch unlocks the key to allow it to turn to the key switch off position, and when the parking brake lever is lowered and operated, the switch locks the switch to turn the key to the switch off position. A parking brake forget-for-prevention device for a vehicle, comprising a lock mechanism for preventing movement.