JPH0242504Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a display device for a transfer device that displays the shift state of the transfer device.

(Prior art) As a display device of a conventional transfer device,
For example:

When switching from 2-wheel drive to 4-wheel drive, this display device lights up an indicator lamp to indicate, for example, 4-wheel drive by operating a shift lever (position switch). There is.

(Problems to be solved by this invention) However, such conventional display devices have the following problems.

In other words, in a transfer device that has a waiting mechanism and a drive mechanism using air pressure and negative pressure actuators to switch between 2-wheel drive and 4-wheel drive, there is a difference between the operation of the shift lever (position switch) and the actual 4-wheel drive. There is a delay time between when the shift lever (position switch) is operated and a so-called waiting state occurs until the shift fork is activated. For example, if you drive on a rough road in 4-wheel drive, then move on to a good road, drive at a constant speed, and then switch to 2-wheel drive, the actual It does not switch to two-wheel drive. For this reason, the shift state of the transfer device cannot be accurately confirmed, resulting in a problem that the reliability of the transfer device cannot be improved.

(Means for Solving the Problems) This invention was made in view of such conventional problems, and the purpose is to improve reliability by displaying the shift status of the transfer device. It is said that

In order to achieve this objective, this invention provides a transfer device that has a drive mechanism using a waiting mechanism or an air pressure or negative pressure actuator for switching between two-wheel drive and four-wheel drive. a first switch means for detecting the operation of the shift fork; a second switch means for detecting the operation of the shift fork; and when the first switch means detects the operation of only the shift rod or only the position switch; a display control circuit for displaying a waiting state of the mechanism and, when the second switch means detects operation of the shift fork, displaying the actual driving state; and a display control circuit according to the output of the display control circuit. display means for displaying the waiting state or the actual driving state.

(Function) In this invention, the state of the transfer drive mechanism is divided into a waiting state and an actual driving state and each is displayed. Therefore, the shift state of the transfer can be accurately confirmed, so that the reliability of the transfer device can be further improved.

(Example) Hereinafter, an example of this invention will be described based on the drawings.

FIG. 1 and FIGS. 2A and 2B are diagrams showing a first embodiment of this invention.

First, to explain the configuration, in Figure 1, 1
is the main drive shaft, 2 is the main drive gear, 3 is the countershaft, 4 and 5 are the counter gears, 6 is the low speed gear, 7 is the hub, 8 and 9
10 is a clutch gear, and 10 is a coupling sleeve.

On the other hand, 11 is the main shaft, 12 and 13
14 is a sprocket gear, 14 is a chain, 15 is a front drive shaft, 16 is a hub, 17 is a clutch gear, and 18 is a coupling sleeve.

Here, when the coupling sleeve 18 is moved and engaged with the clutch gear 17, a four-wheel drive (hereinafter referred to as 4WD) running state is established, and when the coupling sleeve 18 is separated from the clutch gear 17, a two-wheel drive (hereinafter referred to as 2WD) driving state is established. ) is the running state. In the above case, when the coupling sleeve 10 is engaged with the clutch gear 8, high-speed two-wheel drive (hereinafter referred to as 2H) is activated.
Alternatively, when the vehicle is in a high-speed four-wheel drive (hereinafter referred to as 4H) running state and the coupling sleeve 10 is engaged with the clutch gear 9, the vehicle is in a low-speed four-wheel drive (hereinafter referred to as 4L) running state.

Here, the shift fork 19 for moving the coupling sleeve 18 is provided with a 4WD detection switch (second switch means) 20 for detecting the running state of 4WD, and the shift rod 21 is provided with a 4WD detection switch (second switch means).
4WD detection switch (first
Switch means) 22 are provided respectively. On the other hand, a shift fork 23 for moving the coupling sleeve 10 is provided with a 4L detection switch 24 for detecting the running state of the 4L.

Next, the display control circuit and display mode will be explained based on FIGS. 2A and 2B.

In FIG. 2A, 22 is the shift rod 21.
4WD detection switch, 20 is shift fork 19
The respective outputs of these 4WD detection switches 22 and 20 are connected to AND circuits 25 and 20.
26 and inverters 27 and 28, respectively. AND circuit 26
The outputs of the 4WD detection switches 20 and 22 are
Further, each output is inputted to the AND circuit 25 via inverters 27 and 28.
30 is a lighting lamp (display means) to which each output signal from the display control circuit 29 is input;
When the output from the AND circuit 25 is input, the first lighting lamp 31 lights up the characters 2WD, and the second lighting lamp 31 lights up the characters 2WD.
The lighting lamp 32 is connected via the inverter 28.
When the output of the 4WD detection switch 22 is input,
When the output of the 4WD detection switch 22 is input, the third lighting lamp 33 lights up the frame, and the fourth lighting lamp 34 lights up the frame when the output of the 4WD detection switch 22 is input.
When output 6 is input, the 4WD characters will light up.

Next, the effect will be explained.

First, both 4WD detection switches 20 and 22
When OFF, each output is connected to inverters 27 and 28.
Since the high level signals are input to the AND circuit 25, the output of the AND circuit 25 becomes a high level signal, and the first lighting lamp 3
1 lights up the characters 2WD, and the output of the 4WD detection switch 22 is inverted by the inverter 28 to become a high level signal, and the second lighting lamp 3 is turned on.
2, the second lighting lamp 32 lights up the frame. Therefore, the frame as shown by A in Figure 2B and the letters 2WD will be lit, indicating that 2WD
Displays that the vehicle is in running condition.

Next, turn on the 4WD detection switch 22 (20 is
If it remains OFF), the first and second lighting lamps 31 and 32 are turned off, and only the third lighting lamp 33 is turned on. Therefore, as shown in FIG. 2B, only the frame is lit. This results in
The waiting state for 4WD will now be displayed.

Next, turn on the 4WD detection switch 20 (22 is
(remains ON), the third lighting lamp 33 lights up the frame and the fourth lighting lamp 34 lights up.
Light up the 4WD characters. Therefore, Figure 2B
As shown by D, the frame and letters are lit,
Displays that the vehicle is in 4WD driving mode.

Next, turn off the 4WD detection switch 22 (20 is
If left ON), the third and fourth lighting lamps 33 and 34 will be turned off, and the second lighting lamp 32 will be turned off.
only is lit. Therefore, only the frame is lit, as shown by B in FIG. 2B. This allows 2WD
The waiting status will be displayed.

As described above, in this embodiment, the shift state of the transfer device can be accurately confirmed, and the reliability of the transfer device can be further improved.

Next, FIGS. 3A and 3B are diagrams showing a second embodiment of this invention.

This embodiment is an example in which the display mode is changed.

In FIG. 3A, the first lighting lamp 41 has a picture of the rear wheel, etc., the second lighting lamp 42 and the third lighting lamp 43 have a frame similar to the previous embodiment, and the fourth lighting lamp 41 has a picture of the rear wheel, etc.
The lighting lamp 44 is designed to light up pictures of the front and rear wheels, etc.

Therefore, when driving in 2WD, the third
When the frame and picture shown by A in Figure B are in the waiting state for 2WD or 4WD, only the frame and picture shown by B or C in Figure 3B will be in the 4WD driving state. In this case, a frame and a picture as shown by D in FIG. 3B are displayed. Note that the other configurations and operations are the same as those in the previous embodiment.

Next, FIGS. 4A and 4B are diagrams showing a third embodiment of this invention.

In this embodiment, the running states or waiting states of 2H, 4H, and 4L are displayed respectively.

In FIG. 4A, 51 is a 4H detection switch of the shift rod 21, 52 is a 4H detection switch of the shift fork 19, and 53 is a 4L detection switch of the shift fork 23.
1 and 52 are display control circuits 29 similar to those in the previous embodiment;
The 4L detection switch 53 is connected to the fifth lighting lamp 65. Further, the 4L detection switch 53 is connected to AND circuits 25 and 26 via an inverter 35. The first lighting lamp 61 has the letters 2H, the second lighting lamp 62 and the third lighting lamp 63 have a frame as in the previous embodiment, the fourth lighting lamp 64 has the letters 4H, and the fifth The lighting lamp 65 lights up the frame and the letters 4L, respectively.

Therefore, when in the running state of 2H, the frame and the letter 2H are displayed as shown in A of Figure 4B, and when in the waiting state, the frame and the character 2H are displayed as shown in B or C of Figure 4B. When it is in the 4H running state, the frame and the letter 4H are shown as D in Figure 4B, and when it is in the 4L running state, it is the 4th one.
As shown by E in Figure B, a frame and the characters 4L are displayed. In this embodiment, the shift state can be displayed in more detail. Note that the other configurations and operations are the same as those in the previous embodiment.

Next, FIG. 5 is a diagram showing a fourth embodiment of this invention.

This embodiment shows an example in which switching between 2WD and 4WD is applied to a transfer device using air pressure and negative pressure actuators.

In Fig. 5, 71 is the 2WD position switch, 72 is the 4WD position switch, and 73 is the 4WD position switch.
is the 4WD detection switch for shift fork 19. The outputs of these switches 71 to 73 are respectively input to a display control circuit 74, and the display control circuit 74 has AND circuits 75, 76 and an inverter 77. The AND circuit 75 receives the output of the 2WD position switch 71 and the output inverted by the inverter 77 of the 4WD detection switch 73, and the AND circuit 76 receives the output of the 4WD position switch 72 and the 4WD detection switch 73.
The outputs of the AND circuit 75 are inputted to the first lighting lamp 81, the output of the 2WD position switch 71 is inputted to the second lighting lamp 82, and the output of the 4WD position switch 72 is inputted to the first lighting lamp 81. In addition, the AND circuit 7 is added to the lighting lamp 83 of 3.
The outputs of 6 are input to the fourth lighting lamps 84, respectively. The first to fourth lighting lamps 81 to 84 are
Lighting similar to that shown in the first to third embodiments is performed. Therefore, the display is similar to that of the first to third embodiments, and the same effects as those of the embodiment can be obtained in this embodiment as well.

(Effects of the invention) As explained above, according to this invention,
Since the state of the transfer drive mechanism can be displayed separately into a standby state and an actual drive state, the shift state of the transfer can be accurately confirmed. As a result, the reliability of the transfer device can be further improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the first embodiment of this invention;
2A is a display control circuit, FIG. 2B is a diagram showing a display mode, FIG. 3A is a display control circuit showing a second embodiment of this invention, FIG. 3B is a diagram showing a display mode, and FIG. 4A is a display control circuit showing a third embodiment of this invention, FIG. 4B is a diagram showing a display mode, and FIG. 5 is a display control circuit showing a fourth embodiment of this invention. 19...Shift fork, 20...4WD detection switch (second switch means), 21...Shift rod, 22...4WD detection switch (first switch means), 29...Display control circuit, 30...Lighting lamp ( display means).

Claims (1)

[Scope of utility model registration request] In a transfer device having a waiting mechanism or a drive mechanism using an air pressure or negative pressure actuator for switching between two-wheel drive and four-wheel drive, the transfer device includes a first switch means for detecting operation of a shift rod or a position switch; a second switch means for detecting the operation of the fork, and when the first switch means detects the operation of only the shift rod or only the position switch, a display indicating the waiting state of the mechanism; a display control circuit for displaying the actual driving state when the switch means detects the operation of the shift fork; and a display for displaying the waiting state or the actual driving state depending on the output of the display control circuit; A display device for a transfer device, comprising: means.