JP4420455B2 - Brake air failure notification device - Google Patents

Description

  The present invention relates to a technique for ensuring safety in the event of air failure in a vehicle having a parking brake that also serves as an emergency brake that is provided with an air chamber and that operates by discharging air in the air chamber.

  A structure of a parking brake (specifically, a brake chamber of the parking brake) B which is provided with an air chamber and is operated by a reaction force of a spring built in the air chamber by discharging air in the air chamber based on FIG. explain.

The brake chamber B includes an air chamber B1, a brake operating spring B2 built in the air chamber B1, and a piston B3 that moves by a reaction force of the spring B2.
FIG. 7 shows when the parking brake is not in operation. The air chamber B4 is filled with high-pressure air from the air port B5 into the air chamber B4, and the piston B3 moves to the right by the internal pressure of the air chamber B4. The spring B2 is compressed and contracted by the right row of the piston B3.

  When the parking brake is operated, air is released from the air chamber B4 of the parking brake chamber B by opening, for example, a release valve of an air piping system (not shown), and the spring B2 is pressed by the reaction force while pressing the piston B3. extend. That is, the piston B3 moves left. The pull rod B6 is engaged with the piston B3, and the pull rod B6 also moves to the left as the piston B3 moves to the left. The front end of the pull rod B6 is connected to a brake body (not shown), and the parking brake is operated by the left line of the pull rod B6.

On the other hand, when one of the piping systems breaks and the brake air is lost, the air is similarly released from the air chamber B4. In other words, if an air failure occurs unfortunately while traveling, the parking brake will operate unexpectedly (act as an emergency brake), as in parking.
Then, since the vehicle decelerates rapidly without telling the succeeding vehicle that the brake light is not turned on, that is, the emergency brake is operating, the succeeding vehicle may not notice this and may collide with the vehicle. It was.

  Here, there has been proposed a parking brake device that temporarily supplies air from the outside to release the parking brake after the parking brake is activated and the parking brake is activated (for example, (See Patent Document 1).

However, the above technique (Patent Document 1) is to release the parking brake by temporarily supplying air from the outside after the parking brake has acted and the parking brake system has air failure. What is the problem, that is, `` If an air failure occurs while driving, the parking brake (spring brake) operates and the vehicle speed decreases without the brake light lit, so the following vehicle does not notice this and the vehicle It does not eliminate the “fear of rear-end collision”.
No. 7-51964

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vehicle having an air chamber and a parking brake that also functions as an emergency brake that is operated by discharging air in the air chamber. The present invention provides a brake air failure notification device that can notify a vehicle.

  Further, according to the present invention, a brake air failure notification in a vehicle having an air chamber and a parking brake (brake chamber: B) that also functions as an emergency brake that operates by discharging air in the air chamber. In the apparatus, a brake system air tank (1), an air failure detection means (for example, pressure sensor 2) attached to an air piping system including the air tank (1) and detecting an air failure, and an air failure occur. Connected to the indoor display means (cluster meter indicator: C) for notifying the driver of this, alarm notifying means (brake lamp or hazard lamp: A) for notifying neighboring vehicles when energized, and the speedometer (6) First relay means (for example, relay: 7) for relaying current from the indoor display means (C) at a predetermined vehicle speed or higher, and the first relay means 7) When the power supply (3) is connected to the alarm notification means (A), the second relay means (70) energized, and the air failure detection means (2) detects an air failure. If the indoor display means (C) is turned on or blinks and the vehicle speed is equal to or higher than a predetermined vehicle speed, the alarm notification means (A) is energized to turn on or blink.

   The alarm notification means is a brake lamp, and when energized, the brake lamp is either continuously lit or flashes.

  Alternatively, the alarm notification means (A) is a hazard lamp, and the hazard lamp blinks when energized.

Alternatively, the alarm notification means (A) is a brake lamp and a hazard lamp, and when energized, the brake lamp is continuously lit and the hazard lamp blinks.

  The indoor display means is at least one of a failure indicator, a parking indicator, and a hazard indicator that is linked to a hazard lamp.

According to the above-described brake air failure notification device of the present invention (Claim 1), the brake system air tank (1), the air failure detection means (for example, the pressure sensor 2), the power source (3), Alarm notification means (brake lamp or hazard lamp) (A) for notifying neighboring vehicles and relaying current from the power source to the alarm notification means (brake lamp or hazard lamp) (A) at a predetermined vehicle speed or higher Electric means (for example, relay 7) and control means (control unit 10), the control means (10), alarm detection means when the air failure detection means (2) detects air failure Since it is configured to energize (A), when the air fails during traveling, the alarm notification means (A) is lit or flashed to make it visible to neighboring vehicles that an abnormality has occurred. I can do it.
Therefore, the following vehicle can quickly notice the abnormality of the preceding vehicle (the vehicle), and as a result, a secondary disaster such as a rear-end collision can be avoided.

  Alternatively, according to the brake air failure notification device of the present invention (Claim 2), the air failure that is attached to the brake system air tank (1) and the air piping system including the air tank (1) and detects the air failure. A detecting means (2), a power source (3), an alarm notifying means (brake lamp or hazard lamp) (A) for notifying an adjacent vehicle when energized, and the alarm notifying means (brake from the power source at a predetermined vehicle speed or higher) Lamp or hazard lamp) (A) relay means for relaying current (relay 7), and indoor display means (C) for notifying the driver that air failure has occurred. When the means (2) detects an air failure, the indoor display means (C) is lit or blinks, and the alarm notification means (brake lamp or hazard lamp) (A) is energized and lit or blinks. Configured to do Therefore, when the air fails during traveling, the alarm notification means (A) can be lit or blinked to make it possible for the neighboring vehicle to visually recognize that an abnormality has occurred, and the driver can quickly detect the air failure. Can sense and be prepared for subsequent operations.

  If a brake lamp or a hazard lamp is selected as the alarm notification means (A), a pressure sensor or the like for detecting an air failure is incorporated in the brake system in advance, so there is no need to add new equipment, and the minimum Safety is obtained at a cost.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  First, a first embodiment will be described with reference to FIGS. In the first embodiment, when the air failure detection means detects an air failure, the current is controlled so as to energize the alarm notification means for notifying that the following vehicle or the surrounding vehicle is operating the emergency brake. It is embodiment provided with the control unit which is a control means.

  In FIG. 1, the brake air failure device includes an air chamber, a parking brake (brake chamber) B that also functions as an emergency brake that operates when air in the air chamber is discharged, an air tank 1 for a brake system, In the figure, an air failure detection means (for example, a pressure sensor) 2 attached to the air tank 1 to detect air failure, a battery 3 as a power source, and an alarm notification means A for notifying a subsequent vehicle when energized. And a control unit 10 which is a control means.

  Here, as shown in FIG. 2, the alarm notification means A has nine types of alarm display variations a1 to a9.

In a1, a brake lamp of a rear combination lamp (not shown) is used as an alarm means, and its display pattern is to continuously turn on the left and right brake lamps simultaneously when air failure occurs.
In a2, a brake lamp in a rear combination lamp (not shown) is used as an alarm means, and its display pattern is to flash the left and right brake lamps simultaneously when air failure occurs.
In a3, a brake lamp in a rear combination lamp (not shown) is used as an alarm means, and its display pattern is to blink the left and right brake lamps alternately when air failure occurs.
In a4, a hazard lamp in a rear combination lamp (not shown) is used as an alarm means, and its display pattern is to cause the right and left hazard lamps to blink simultaneously when air failure occurs.
In a5, a hazard lamp in a rear combination lamp (not shown) is used as an alarm means, and its display pattern is to blink the left and right hazard lamps alternately when air failure occurs.
a6 is a combination of a1 and a4.
a7 is a combination of a1 and a5.
a8 is a combination of a2 and a4.
a9 is a combination of a2 and a5.

  As shown in FIG. 3, the brake chamber B has four chamber variations b <b> 1 to b <b> 4, and each variation is connected to the air tank 1 by an air pipe 20.

b1 is a brake chamber exclusively for push type parking.
b2 is a brake chamber exclusively for pull type parking.
b3 is a push type parking brake chamber integrated with the service brake chamber.
b4 is a pull type parking brake chamber integrated with the service brake chamber.

  The control unit 10 is connected to the pressure sensor 2 through a signal line Li, and constantly monitors the brake system air by the pressure sensor 2.

  Further, the control unit 10 relays a power supply line L that sends current from the battery 3 to the alarm notification means A. When the pressure value detected by the pressure sensor 2 falls below a predetermined value, the control unit 10 warns the current. It is comprised so that it may flow into the means A.

In addition, a relay 7 is interposed in the power line L between the control unit 10 and the alarm notification means A.
Specifically, the power supply line L includes a line L1 that connects the power supply 3 and the control unit 10, a line L2 that connects the control unit 10 and one terminal 72a of the switch unit 72 described later of the relay 7, It is comprised by the line L3 which connects the other terminal 72b of the switch part 72 of the said relay 7, and the alarm alerting means A. FIG.

  The line L3 is provided with a switch (not shown) that is a brake lamp switch if the alarm notification means A is a brake lamp, and a hazard lamp switch if the alarm notification means A is a hazard lamp. In a state where there is no failure, lighting and blinking control of the alarm notification means A is performed by a brake operation or a hazard operation.

The relay 7 is composed of an excitation unit 71 and a switch unit 72, and has a structure in which when a current is applied to the excitation unit 71, an excitation current is generated and the switch 72 is connected.
The exciter 71 is connected to the speedometer 6 by a line Lm, and is configured to cause a current to flow through the exciter 71 when the vehicle speed is equal to or higher than a predetermined value (for example, 1 km / h).
If it is less than 1 km / h, it is recognized that the vehicle is stopped and no current is applied to the excitation unit 71.

  In FIG. 1, the symbol Le indicates battery ground.

  Here, in addition to the relay 7, a vehicle speed sensor mounted on the vehicle and a control unit may be combined so that the alarm notification unit A is energized from the power source 3 when the vehicle speed is equal to or higher than a predetermined value.

  That is, in the present embodiment, when the vehicle is running (the relay 7 is connected), air failure occurs and the brake air pressure cannot be secured, the control unit 10 sets the alarm notification means A. It is configured to light up or blink.

  Here, the alarm notification means A uses either a brake lamp or a hazard lamp, and its lighting / flashing state (variation of alarm display) is any one of a1 to a9 as described above with reference to FIG. is there.

  Next, with reference to FIG. 4, the control method of the air failure notification in the embodiment of the present invention will be described.

  First, in step S1, the pressure of the brake air is detected by the pressure sensor 2, and in the next step S2, the parking brake is activated (the parking brake is activated automatically when the parking brake is activated and when the air is lost). In step S3, the control unit 10 determines whether or not the air has failed based on information from the pressure sensor.

  If the air has not failed (NO in step S3), the process returns to step S1, and step S1 and subsequent steps are repeated again. On the other hand, if it is determined that air has failed (YES in step S3), the process proceeds to step S4.

In step S4, the control unit 10 energizes the alarm notification means A with the battery current. At this time, if the vehicle is traveling in the relay 7 separately from the control by the control unit 10, that is, if the vehicle speed is a predetermined value, for example, 1 km / h or more, the relay 7 is connected and the alarm notification means A is turned on or Set to blink state.
In addition, the pattern (variation) of lighting or blinking is either of FIG.

In the next step S5, the control unit 10 determines whether or not to end the control, and if it ends (YES in step S5), the control unit 10 ends as it is.
On the other hand, if it does not end, after resetting (for example, returning the brake chamber B to the state before the failure), the process returns to step S1, and step S1 and subsequent steps are repeated.

  Instead of using the relay 7, when the vehicle speed sensor and the control means equipped on the vehicle are combined, and the vehicle speed is equal to or higher than a predetermined value, the power supply 3 supplies power to the alarm notification means A. 2 is added between step S3 and step S4 in the flowchart of FIG. 2 to determine whether the vehicle speed is equal to or higher than a predetermined value (whether the vehicle was running when the parking brake was activated). However, when the vehicle speed is equal to or higher than a predetermined value (when the parking brake is operated as an emergency brake, the vehicle is running), the process may proceed to step S4.

According to the first embodiment having such a configuration and control method, the control unit 10 is configured to energize the alarm notification means A when the pressure sensor 2 detects an air failure, so that it is running. When the air fails, the alarm notification means A can be lit or blinked to visually recognize that an abnormality has occurred with respect to the following vehicles including neighboring vehicles.
Therefore, the following vehicle can quickly notice the abnormality of the preceding vehicle (the vehicle), and as a result, a secondary disaster such as a rear-end collision can be avoided.

  Next, a second embodiment will be described with reference to FIGS.

  In the first embodiment shown in FIGS. 1 to 4, air failure is detected by the pressure sensor 2, and based on the information, the control unit 10, which is a control means, controls the current to flow to the alarm notification means A. Yes.

  On the other hand, in the second embodiment of FIGS. 5 and 6, an indoor cluster meter indicator (any one or more of a failure indication indicator, a parking indicator, and a hazard indicator) is set according to the signal of the pressure sensor 2. In this embodiment, the lamp is directly turned on or blinked, and a current is directly supplied to the alarm notification means A via an indicator.

  In FIG. 5, the brake air failure device of the second embodiment includes an air chamber, a parking brake (brake chamber) B that also functions as an emergency brake that operates when air in the air chamber is discharged, and a brake system. The air tank 1, the pressure sensor 2 attached to the air tank 1 for detecting air failure, the battery 3 as the power source, the relay 7 connected when the vehicle is running, and the relay 7 are connected. Another relay 70 that is connected to the battery 3 and supplies current to the alarm notification means A, and an indicator of a cluster meter that lights up or blinks when an air failure occurs (among the indicators of failure indication, parking indicator, hazard indicator) Any one or more) C.

  Here, the parking brake B is the same as that of the first embodiment, and has four variations (see FIG. 2), and any variation is connected to the air tank 1 by an air pipe 20. Further, the alarm means A is the same as that of the first embodiment, and there are nine variations (see FIG. 3).

  The cluster meter indicator (one or more of a failure display indicator, a parking indicator, and a hazard indicator) C has seven display variations as shown in FIG.

c1 is lighting of an indicator for failure indication;
c2 is the lighting of the parking indicator,
c3 is the lighting or blinking of the hazard indicator linked to the hazard lamp,
c4 is a combination of c1 and c2,
c5 is a combination of c1 and c3,
c6 is a combination of c2 and c3;
c7 is a combination of c1, c2, and c3.

  The cluster meter indicator C is connected to the battery 3 via a line L10 through a switch (not shown). The switch (not shown) is connected to the pressure sensor 2 via a line Li. Based on the information from the pressure sensor 2, air loss is detected. It is configured so that the current from the battery flows through the indicator C when a failure occurs.

The indicator C is connected to one terminal 72a of a switch unit 72 (described later) of the relay 7 through a line L20.
The other terminal 72b of the switch unit 72 of the relay 7 is connected to the excitation unit 710 of another relay 70 by a line L30.

The relay 7 is composed of an excitation unit 71 and a switch unit 72. When a current is applied to the excitation unit 71, an excitation current is generated and the switch 72 is connected.
The exciter 71 is connected to the speedometer 6 by a line Lm, and is configured to cause a current to flow through the exciter 71 when the vehicle speed is equal to or higher than a predetermined value (for example, 1 km / h).
If it is less than 1 km / h, it is recognized that the vehicle is stopped and no current is applied to the excitation unit 71.

The another relay 70 is configured by an excitation unit 710 and a switch unit 720, and has a structure in which when a current is applied to the excitation unit 710, an excitation current is generated and the switch 720 is connected.
One terminal 721 of the switch unit 720 of another relay 70 is connected to the battery 3 by a line L40, and the other terminal 722 of the switch unit 720 is connected to the alarm notification means A by a line L50.

  The line L50 is provided with a switch (not shown) that is a brake lamp switch if the alarm notification means A is a brake lamp, and a hazard lamp switch that is a hazard lamp. , The alarm notification means A is turned on and blinked by a brake operation or a hazard operation.

  According to the above-described second embodiment, compared to the first embodiment, since it is configured to perform indoor display, even if an air failure occurs, the driver can immediately recognize that the air failure has occurred. The subsequent operations can be performed smoothly.

  The illustrated embodiment is merely an example, and is not a description to limit the technical scope of the present invention. For example, the indoor display unit of the second embodiment can be added to the first embodiment. Also, the location of the pressure sensor 2 for detecting air failure may be a brake air piping system other than that shown in the drawing as long as it communicates with the parking brake (spring brake) chamber.

The block diagram which showed the structure of 1st Embodiment of this invention. The table | surface which showed the variation of the alarm display which concerns on 1st Embodiment of this invention. The table | surface which showed the variation of the air brake chamber which concerns on 1st Embodiment of this invention. The flowchart which showed the control method of 1st Embodiment of this invention. The block diagram which showed the structure of 2nd Embodiment of this invention. The table | surface which showed the display variation of the cluster meter which concerns on 2nd Embodiment of this invention. The partial step view explaining the action | operation of the brake chamber (spring brake chamber) which is a structure of a parking brake.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Air tank 2 ... Pressure sensor 3 ... Power supply / battery 6 ... Speedometer 7 ... Connection means / relay 10 ... Control means / control unit 71 ... Excitation part 72- ..Switch part A ... alarm notification means B ... brake chamber C ... indoor display means / indicator L ... power line

Claims (5)

In a brake air failure alarm device in a vehicle having a parking brake (B) that also has an air chamber and also functions as an emergency brake that operates by discharging air in the air chamber, a brake system air tank (1), An air failure detection means (2) that is attached to an air piping system including the air tank (1) and detects air failure; an indoor display means (C) that informs the driver that an air failure has occurred; Alarm notification means (A) for notifying nearby vehicles sometimes, and first relay means (7) connected to the speedometer (6) and relaying current from the indoor display means (C) at a predetermined vehicle speed or higher. And a second relay means (70) for energizing the alarm notification means (A) from the power source (3) when the first relay means (7) is connected, and an air failure detection means (2 ) Detects an air failure Brake air failure characterized by having a function of turning on or flashing by energizing the alarm notification means (A) if the indoor display means (C) is lit or flashing and the vehicle speed is higher than a predetermined vehicle speed. Notification device. 2. The brake air failure notification device according to claim 1, wherein the alarm notification means is a brake lamp, and when energized, the brake lamp is continuously turned on or blinks. 2. The brake air failure notification device according to claim 1, wherein the warning notification means is a rear hazard lamp, and the hazard lamp blinks when energized. 2. The brake air failure notification device according to claim 1, wherein the alarm notification means is a brake lamp and a rear hazard lamp, and when energized, the brake lamp is continuously lit and the hazard lamp blinks. 2. The brake air failure notification device according to claim 1, wherein the indoor display means is at least one of a failure display indicator, a parking indicator, and a hazard indicator linked with a hazard lamp.

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