JPS6088255A - Generator for electrical output signal in automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has an electronic speed detector that detects the traveling speed of an automobile, and when switching between a forward gear and a reverse gear, the traveling speed of the automobile is detected in the forward direction. The present invention relates to a device for generating an electrical output signal, which generates an electrical output signal when the manual shift lever is switched to a new transmission gear while the transmission gear is still too high.

Although in modern transmission gearing the switching to reverse gear by the driver has been greatly simplified, for example by means of a synchronized reverse shifter, it is still possible to do so by applying a VC reverse movement if the forward speed is too high. There is a possibility of damaging the gear system.

For this reason, various backward movement prevention bags fM have been developed that operate preferentially depending on centrifugal force in relation to the traveling speed of the automobile.

All these devices require high manufacturing costs and do not operate reliably enough in the low speed range. However, this region is particularly important for the application of backward motions, for example.

Electromechanical devices have also been proposed, for example in German patent application P 30 42 920.021, in particular with a downstream device for inhibiting the application of a backward motion, according to which the A working electromagnet locks the mechanical gear switching device via an output signal.

Although this device exhibits reliable operation, it is costly and it is difficult to adapt the switching operation even outside the range of reverse movement.

It is therefore an object of the present invention to improve a device of the type mentioned at the beginning of this section in such a way that a sufficiently high protection effect against unacceptable cuts eVc is realized, and at the same time it is highly compatible with various cutting devices and is highly desirable. The purpose is to make it possible to manufacture pears at a very low cost.

This object is achieved by the characterizing part of claim 1.

When an impermissible transition is prepared, a warning signal alerts the driver to the impermissible transition and the driver simply interrupts the transition until permissible conditions for reversing have been established. In some cases this may be sufficient and the driver can then achieve the necessary conditions by braking or by simply waiting.
Moreover, the speed above the threshold for allowed switching is
A warning signal is generated only when this speed existed before switching. Therefore, for example 10 km/h
If, after switching to reverse in an acceptable manner at a speed lower than the threshold value, this speed is exceeded in the reverse direction, no warning signal is generated. If requirements regarding switching safety are high, it can be provided that the electrical output signal can be used for activating the inhibiting device or also for activating the inhibiting device together with the activation of the hoofing device. .

An advantageous embodiment of the invention is that ti″-claim 2
It is described in item 10.

If only one warning device is provided to avoid unacceptable switching, an audible signal generator already installed in the vehicle for other reasons (e.g. for frost warning) may be used. provides very effective and simple protection. In connection with a prohibition device, an optical signal generator appears to be sufficient as information for the driver.

In the case of mechanical switching devices, lock magnets, such as those shown in German patent application P 504 292 Q, 0-21C, unpublished), are used as inhibiting devices, for example. In the case of switching devices driven by auxiliary power, such as group switching devices, a simple magnetic valve is sufficient to avoid unacceptable switching until the permissible speed for reversing is reached. All you have to do is let the air out of the switching cylinder.

When using the No. 8 light generator of the present invention to switch to reverse motion, the switch of one or more reverse floodlights must be
It may be used in a second application for a second human power signal depending on the position of the shift lever.

If a warning device is used, it is particularly advantageous if a warning signal is generated when the gear shift lever is moved to the next lower speed switching path, in order to ensure a precise reset of the introduction of a defective shift. be.

As is clear from claim 8 and from claim 9, which specifies specific implementation aspirations, both signals can be generated separately by very simple means, e.g. Alternatively, a signal is then generated for activation of the switching inhibit device. Particularly preferred is an arrangement in which a relay is arranged in the logic switching circuit, and the relay operates in a range below a switching threshold, and therefore in a range that is permissible for switching.

According to claim 10, an output signal for a warning or prohibition device is realized in a circuit with multiple switching. For example, a corresponding 1llF straddling or inhibiting device can be provided for the changeover to a lower speed changeover path, including the changeover path to reverse movement, as well as to the lower speed gear of the group changeover gear and the changeover to reverse movement. In this case, in order to realize several cut-off iW thresholds, it is only necessary to provide the rotational speed switching device with several l-tensioners or resistors that can be switched on separately. A nipotentiometer may be placed near the shift lever to facilitate switching. The second human power part to the logic switching circuit is 1
It may be connected to a single switch or to several switches connected in parallel; if only one switch is placed in the second power section, the second power section must be closed for all switching. .

German Publication No. 3012776 and German Publication No. 1580470 disclose false alarm systems and devices, but these are used to warn people outside the car, and are mainly used in cars. relative to the intended or unintended direction of travel.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be further described with reference to accompanying drawings showing preferred embodiments of the present invention.

In the block diagram of FIG. 1, a device for generating an electrical output signal A is shown together with a rotational speed switching circuit J, the switching circuit 1 receiving a switching signal as a first human power signal V for a logic switching circuit 2. occurs depending on the vehicle's driving speed. The rotation speed switching circuit is constantly supplied with an analog signal of the rotation speed (vehicle speed) from an electronic rotation speed generator 3. In the logic switching circuit 2, the second human power signal S (derived from the transmission gear status indicator 4, for example the reverse floodlight switch) is logically coupled to the first human power signal V according to the following conditions.

N Threshold (V) Switching signal (S) Output signal (A) 00 01゛　Ro 1 0 0 1 0 → 11 1 1 1 0 1 0 0 → 1 1 0 Dynamic functionality is achieved through self-holding circuits.

The output signal A activates the eel warning device 5 or the prohibition device 6.

The illustrated device M#'i can be used with synchronized manually controlled gearing, but with variable speed gearing in which all gears are switched by auxiliary force, or variable speed gearing in which only gear changes are made by auxiliary force, or multi-speed gearing. May be used for gear cylinders.

In connection with inhibiting devices, it is also useful for use in automatic transmissions.

In the apparatus according to the embodiment of FIG. 2, the rotation speed switching circuit]
is an integrated circuit 1cIO type frequency switch 11, a potentiometer 12,! From the reed switch 31 of the electronic rotational speed generator 3, an analog signal F, which is proportional to the speed of rotation and thus the speed of travel of the motor vehicle, is continuously supplied to the frequency switch 】 via an input. is constantly compared with a settable frequency threshold in potentiometer 12. When the signal supplied to the frequency switch 11 is below this threshold, a first human input signal (digital signal) for the logic switching circuit 2 is generated. If the frequency threshold is a constant value and thus corresponds to a predetermined travel speed, it can be fixed by a resistor instead of the potentiometer 12 and held, as is generally known. . Logic switching circuit 2
, the transistor 21 as a switch of the switching relay 22 is connected to the first human power section VIC. When the switching relay 22 is not energized, that is, at rest, the switching relay 22 is in the second state.
The human power signal S is coupled to the output signal A via the contact 23, and this coupling is interrupted in the excited state.

The second human power signal S is fed to the gear status indicator 4 and thus to the switch 41, which is closed, for example mechanically or electrically, upon intentional switching. This may be a change to reverse or a change to another form of reverse such as gear change. Output signal A is liF notification f5 and inhibition device g, 6
(connected to the power supply 7) (by the second connecting element). The relay 22 of the logic switching circuit 2 and the frequency switch 11 of the rotation speed switching circuit receive power from a conductor 71.

Other elements shown in FIG. 2, such as resistors, capacitors and diodes, are used for compatibility and protection of switch 11, transistor 21 and relay 22, as is generally known.

The operation of the device described above is as follows.

When the contacts 23 of the relay 22 are in the rest position shown,
That is, when the forward speed is, for example, in the range >1 obm/h (in which case switching to the reverse gear is not allowed), actuating the shift lever 8 in the reverse direction causes the switch 41 (also coupled to the reverse floodlight switch) to be activated. If so, the switch 42 is also closed, which also closes the circuit to the alarm device 5 (audible or visible). The driver interrupts the changes he has made and reduces his speed in response to a particularly impressive warning signal, such as an audible signal.

For example, when the speed drops below 10 km/h, the relay 22 is switched by the transistor 21, and the second human power signal S
In the case of backward switching performed in the 0th order, in which the output signal A is no longer coupled to the output signal A, no notification signal can be generated. Next, when the speed in the reverse direction increases, the state of the relay 22 does not change. It is switch 41 to 4 from the human power section of Tate 2 human power signal S.
This is because an increase in speed occurs after the closing of transistor 2, and the relay 22 remains energized via the switch 41, 42 even after the transistor 21 is shut off.

FIG. 3 shows a plurality of potentiometers 120, 121.
122 possible configurations are shown, these potentiometers are connected to an integrated circuit 1cI or frequency switch.
It is selectively coupled via a switching device 82, thereby allowing the setting of various switching thresholds. The switching device 82 can be provided in the rotational speed generator 3 (in the case of mechanical activation, in the vicinity of the shift lever 81 in FIG. 4, which is the starting point of displacement).

FIG. 4 shows an example of a locking magnet 61 as an inhibiting part of a gear changeover 83 of a gear train 8, which acts to stop an unauthorized switching of the gear changeover 83.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an apparatus according to an embodiment of the present invention, FIG. 2 is a circuit diagram of the apparatus shown in FIG. 1, and FIG. 3 shows a modified embodiment of the present invention; FIG. 4 is a schematic arrangement diagram of a gear device equipped with a prohibition section. Explanation of symbols

Claims (9)

[Claims] (1) It has an electronic speed detector that detects the traveling speed of the vehicle, and when the forward gear or the reverse gear is switched, the speed of the vehicle is still too high in the forward direction.
In an electrical output signal generating device having means for producing an electrical output signal when a manual shift wheel is switched towards a new transmission gear, the first human power number 18 at the input (■) derived from the traveling speed is An output that activates the warning or prohibition device (5, 6) at the output section (A) only when it is present before the m2 human power signal at the input section (S) derived based on the operation of the shift lever/4-. Apparatus for generating an electrical output signal, characterized in that it comprises means for generating a signal. (2) ' as set forth in claim 1, characterized in that the #kichi device (5) is an audible or optical information generator.
A device for generating electrical output signals. (3) The stopping device (6) is a lock magnet (61), and this lock magnet prohibits switching of the switching device (83) of the speed change gear device (8). A device for generating an electrical output signal. (4) The inhibiting device (6) is a magnetic valve, and this magnetic valve is
2. A device for generating an electrical output signal according to claim 1, characterized in that no air is supplied to the switching piston of the switching device which is energized with an auxiliary force. (5) When switching to the forward gear, the reverse gear (43
) The electrical output according to any one of claims 1 to 4, characterized in that an input signal based on shift lever operation is derived from the switch (42) for the second human power section (S). Signal generator. (6) Based on shift lever operation (H!, 2-man power section (
When the 810 input signal is switched (gear device status indicator (4))
6. The electrical output signal generating device according to claim 1, wherein the electrical output signal is generated already when the shift lever (81) is moved into the switching path. (7) The current running direction is determined by the first logic switching circuit (2).
The electrical system according to any one of claims 1 to 5, characterized in that recognition is performed only by a logical combination of two input signals in the human power section (V) and the second human power section (S). Output signal generator. (8) A) One measurement cycle of the electronic speed detector (3) that depends on the running speed or rotational speed of the vehicle is determined by a predetermined measurement value, that is, a threshold value, and a conductor (F) in the rotational speed switching circuit (1).
Constantly compares the force signal from the rotation speed switching circuit (2) to the first human power section (V) of the logic switching circuit (2).
), and c) supplying the second human power signal derived based on the switching operation of the transmission gear device to the second human power section of the logic switching circuit (2); output! An electrical output signal according to any one of claims 1 to 7, characterized in that the output signal is conducted from (FIG. 1) to, for example, an audible or optical warning device (5). generator. (9) A) The rotational speed switching circuit (1) consists of a frequency switch (integrated circuit 1c1, ]1), and the analog signal of the running speed is transmitted from the reed switch (31) of the electronic rotational speed generator (3). The frequency is constantly supplied to the switch, the switching threshold can be adjusted by a potentiometer (2) or fixed by a resistor, and at a running speed below the switching threshold, the first switching circuit (2) is connected to the first switching circuit (V). A digital switching signal is sent out as a signal, and the logic switching circuit (2) has a transistor (21), and this transistor is in a dormant state and ducks down to connect the second human power section (S) to the output section (A). ) is connected to the relay (22), which is connected to the switch (41), is made conductive when the first human power No. 1d is applied, and c) the second human power section (S) of the logic switching circuit (2) is connected to the switch (41), and Gear gear shift lever (8
1) is closed when the switching occurs, and 2) the output (A) of the logic switching circuit (2) is connected to the warning signal generator (5) and/or the prohibition bag M (6, 61) for switching.
9. A device for generating an electrical output signal according to claim 8, characterized in that it is coupled to: +I (I Output assigned to different traveling speeds of Ml number (
A plurality of potentiometers (120, 12), 12 for generating a plurality of separate switching thresholds in the mjK switching device (83) of the transmission gearing (8) for No. g (A)
2) Or a resistor is arranged in the rotation speed switching circuit, and a plurality of switches (4), 4 are arranged in the second human power section (S) of the logic switching circuit (2).
2) are arranged so that they can be connected separately. An apparatus for generating an electrical output fg according to claim 9, wherein the electrical output fg is Ffmin.