JPH0712101Y2 - Movable cowl device of vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a movable cowl device for a vehicle.

(Prior Art) When introducing outside air into a vehicle compartment, it is generally performed that a slit communicating with the outside is provided on the upper surface of a cowl box in front of the front window and the outside air is introduced into the vehicle compartment through the cowl box. There is. Further, an inside / outside air switching device capable of selectively communicating with the inside of the cowl box and the inside of the vehicle is provided at the air introducing portion into the inside of the vehicle, and the air passing through the inside / outside air switching device is introduced into the inside of the vehicle by a blower. Moreover, it is also commonly performed that the air volume of the blower can be adjusted.

On the other hand, a technique is known in which a cowl cover that covers the upper surface of the cowl box can be opened and closed, and a wiper for wiping the front window is housed in the cowl box, and the cowl cover is opened when the wiper is operated (for example, actual opening). (See Sho 60-93555).

(Problems to be solved by the invention) As described above, in the method of introducing the outside air from the slit of the cowl cover on the upper surface of the cowl box, the requirement for the air volume of introducing a large amount of outside air into the vehicle interior can be satisfied, The formation of the slits makes it difficult to improve the aerodynamic characteristics of the vehicle (reduces air resistance during traveling), and the need to provide the slits reduces the degree of freedom in designing the vehicle. There is.

On the other hand, it is conceivable that the cowl cover can be opened and closed and the cowl cover is opened when the outside air is introduced, but the cowl cover is always opened when the outside air is introduced, which adversely affects the aerodynamic characteristics and the appearance of the vehicle. Further, opening and closing the cowl cover requires a relatively large amount of electric power, and a large-capacity battery needs to be mounted on the vehicle in order not to adversely affect other electric components of the vehicle.

That is, the problem to be solved by the present invention is to open the cowl cover only when necessary without causing a problem due to the increase in power consumption, and to meet the requirements for the outside air introduction amount and the aerodynamic characteristics and the appearance of the vehicle. To be satisfied.

(Means for Solving the Problems) The present invention is required to introduce a large amount of outside air while satisfying the above-mentioned aerodynamic characteristics and appearance requirements by normally keeping the cowl cover closed. When the cowl cover is opened at the time of opening, the timing of the opening of the cowl cover and the increase of the air volume due to the blower are shifted to solve the problem of temporary increase in power consumption.

That is, a concrete means for solving the above-mentioned problem is to provide a cowl cover which covers the upper surface of the cowl box in front of the front window of the vehicle so that the upper surface of the cowl box can be opened and closed. An introduction port is opened, an electric drive mechanism for opening and closing the cowl cover, and an inside / outside air switching device capable of selectively communicating with the outside air introduction port and the inside air introduction port for introducing air in the vehicle interior, An electric blower for sending the air from the inside / outside air switching device into the vehicle compartment, an air volume adjusting device for adjusting the air volume of the blower, and an outside air introduction detecting means for detecting that the inside / outside air switching device is switched to outside air introduction. The large air volume setting detection means for detecting that the air volume control device is set to a large air volume, and the switching of the inside / outside air switching device to the outside air introduction is detected by the outside air introduction detection means. And when the large air volume setting of the air volume adjusting device is detected by the large air volume setting detecting means, the blower is operated to have a large air volume after the drive mechanism is operated and the cowl cover is opened. A movable cowl device for a vehicle, comprising: the drive mechanism and a control means for controlling the operation of the blower.

(Operation) In the case of the movable cowl device for the vehicle described above, the cowl cover is closed during normal operation when the amount of air introduced is small when the outside air is introduced, and the outside air is introduced into the vehicle compartment through the gap between the cowl cover and the cowl box or the like. . In this case, even if the cowl cover does not have a slit because the required air volume is small, it does not hinder the introduction of outside air.Since the slit is not required, it is advantageous in improving the aerodynamic characteristics, and in the design of the vehicle. The degree of freedom of design is increased.

Then, when a large air volume is required, the cowl cover is opened to ensure introduction of outside air commensurate with the required air volume.

Although the opening of the cowl cover consumes a large amount of electric power, the air volume of the blower does not increase until the cowl cover is opened, that is, the opening of the cowl cover and the operation of the blower with a large air volume are performed at the same time. Since it will not be done, it will not cause a large voltage drop temporarily,
It is possible to avoid adversely affecting other electric components without installing a large capacity battery.

(Effect of the Invention) Therefore, according to the present invention, when the outside air introduction detecting means detects the switching of the inside / outside air switching device to the outside air introduction and the large air volume setting detecting means detects the large air volume setting of the air volume adjusting device. In addition, since the drive mechanism is operated first and the blower is operated with a large air volume after the cowl cover is opened, a control means for controlling the operation of the drive mechanism and the blower is provided. It does not cause the problem of causing a large voltage drop, it is possible to satisfy the large air volume requirement with a battery with a relatively small capacity, and the cowl cover can be closed at normal times, and a slit is provided in the cowl cover. Since it is not necessary to provide an outside air introduction port, the aerodynamic characteristics of the vehicle can be improved and the degree of freedom in design can be increased.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In the vehicle 1 shown in FIG. 1, 2 is a front window,
Reference numeral 3 is a bonnet, 4 is a headlight, and as shown in FIG. 2, a cowl box 5 below the front of the front window 2 is provided with a cowl cover 6 that covers the upper surface of the cowl box 5 so as to open and close.

An outside air introduction port 10 for introducing outside air into the vehicle compartment is opened on the bottom surface of the cowl box 5. Further, the cowl cover 6 is connected to the cowl box 5 so as to form a quadrilateral link using two support links 12, 12, and an electric cover for opening and closing the cowl cover 6 on the cowl box 5. The drive motor 13 is housed, and the wiper 14 for wiping the front window 2 is housed.

The drive mechanism for the cowl cover 6 is shown in FIG. That is, in the cowl box 5, a rotary link 20 driven by a cover drive motor 13 via a worm and a worm gear is provided so that its rotation surface is parallel to and perpendicular to the vehicle longitudinal direction. The rotary link 20 and the support link 12 of the cowl cover 6 are linked via a link link 21, and the rotary link 20 rotates to link the link.
The support links 12 and 12 are rotated via 21 to open and close the cowl cover 6. Further, a terminal plate 22 that rotates in synchronization with the rotary link 20 is supported coaxially with the rotary link 20, and a notch 22a is provided in the terminal plate 22, and a drive motor is provided for each half rotation of the terminal plate 22. The power supply to 13 is cut off, and the cowl cover 6 is held in the open position and the closed position, respectively.

Further, the outside air introduction port 10 of the cowl box 5 is opened at a position close to the inside air introduction port 24 for introducing and circulating the air in the vehicle interior to the air conditioning duct 23 of the vehicle as shown in FIG. ing. An inside / outside air switching device 26 is connected to the air conditioning duct 23 via a switching door 25 for selectively opening / closing the outside air inlet 10 and the inside air inlet 24.
Further, a blower 27 for sending the air from the inside / outside air switching device 26 into the passenger compartment is provided.

With respect to the inside / outside air switching device 26, an inside / outside air changeover switch, which will be described later, is provided in conjunction with the operation of the changeover door 25, and the blower 27 is driven by an electric blower motor 27a.
Moreover, the amount of air can be adjusted by an air flow adjusting device described later. Then, the air conditioning duct 23 includes the cooling unit 28, the heater core 29, the mix door 30 for adjusting the amount of air passing through the heater core 29, the vent door 31, the defroster door 32, and the heat door 33, and communicates with the interior of the vehicle. ing.

Next, a control system for the cover drive motor 13, the blower motor 27a and the like will be described.

-Control Example 1-This example is shown in FIGS. 5 to 7. In FIG. 5, 34 is a battery, 35 is a main switch having an ignition terminal 36, 37 is a changeover switch of the inside / outside air switching device 26, 38 is an air volume adjusting device, 40 is a wiper motor 42 in response to a signal from a wiper switch 41. And a cowl control unit for controlling the operation of the cowl cover 6.

The cover drive motor 13 is connected to the main switch 35 via the first relay switch 43, and the first relay switch 43 is grounded via the rotary terminal plate 22 and the second relay switch 44 described above. The second relay switch 44 is an outside air signal from the inside / outside air changeover switch 37 and a cowl control unit.
The inside / outside air changeover switch 37 is a third relay switch, which is energized via a switch means (semiconductor switch) 45 which operates by receiving a signal from at least one of the actuation signals from 40.
The operation of 46 enables the output of the outside air signal. The air volume controller 38 switches the air volume of the blower 27 in three steps, and when the large air volume is set, the third relay switch 46 is used.
It is designed to energize.

The blower motor 27a is connected to the large air volume setting terminal of the air volume control device 38 via the normally closed relay switch 54, and the coil of the normally closed relay switch 54 is energized from the open terminal of the rotary terminal plate 22. Has been done. Further, the coil of the normally-closed relay switch 54 is grounded via the normally-open relay switch 55 which is energized by the switch means 45.

Therefore, in the case of this example, the switch means 45 constitutes an outside air introduction detecting means for detecting the switching of the inside / outside air switching device 26 to the outside air introduction, and the third relay switch 46 makes the air volume adjusting device 38.
And a large air flow rate setting detecting means for detecting the large air flow rate setting. Further, the first relay switch 43, the second relay switch 44, the normally closed relay switch 54, and the normally open relay switch 55.
However, the cover drive motor 13 and the blower motor 27a are based on signals from the switch means (outside air introduction detection means) 45, the third relay switch (large air volume setting detection means) 46, and the rotary terminal plate (cowl cover open state detection means). It constitutes a control means for controlling the operation of.

In the above circuit configuration, when the air volume adjusting device 38 is set to a large air volume, the third relay switch (large air volume setting detecting means) 46.
Is turned on, and at that time, if the inside / outside air changeover switch 37 is turned on to the outside air, switch means (outside air introduction detection means)
45 is activated and the second relay switch 44 is opened. As a result, the first relay switch 43 is turned on, the cover drive motor 13 is operated, the cowl cover 6 is opened, and
The rotary terminal plate 22 rotates, the notch 22a moves to the open terminal, the first relay switch 43 turns off, the cover drive motor 13 stops, and the cowl cover 6 is held in the open state.

Then, when the air volume adjusting device 38 is turned to a medium or small air volume or is turned off, the third relay switch 46 is turned off, and the switch means.
45 is turned off, the second relay switch 44 is closed, the first relay switch 43 is turned on, the cover drive motor 13 is activated, the cowl cover 6 is closed, and the cutout 22a is held in the closed state. It Also, the cowl cover 6 is opened even when the wiper 14 is operated because the switch means 45 is turned on by the signal from the cowl control 40.

On the other hand, regarding the blower motor 27a, when the switch means (outside air introduction detecting means) 45 is on, the normally open relay switch 55 is closed, and the rotary terminal plate 22 is kept open until the cowl cover 6 is completely opened. The blower motor 27a does not operate because the normally-closed relay switch 54 is opened (OFF) by the power supply from the open terminal of the. And cowl cover 6
Is kept open, that is, the notch 22a corresponds to the open terminal of the rotary terminal plate 22 and the cover drive motor 13 is de-energized, the normally closed relay switch 54 is de-energized and closed. Then, the blower motor 27a operates.
This is the same even when the cowl control unit 40 outputs an open signal to the switch means 45.

However, when the inside / outside air changeover switch 37 is turned on to the inside air or when the open signal is not output from the cowl control unit 40, the switch means 45 remains off and the normally open relay switch 55 is in the open state. In
Therefore, the normally closed relay switch 54 is in the closed state. Therefore,
When the air volume controller 38 is set to a large air volume, the blower motor
27a will operate to obtain maximum airflow.

That is, as shown in the control flow in FIG. 6 and the time chart in FIG. 7, when the switch of the air volume adjusting device 38 is maximum and the inside / outside air changeover switch 37 is inside air, the cowl cover 6 is blower motor 27a operates as such that the maximum air volume can be obtained because there is no need to opening motion (step S ₁ ~S _3). Further, when the inside / outside air changeover switch 37 is outside air, if the wiper 14 is in operation, the cowl cover 6
There blower motor 27a is operated as it is a large volume because already in the open state (step S _4, S _3). And wiper 1
If 4 is not in operation, the cover drive motor 13 opens the cowl cover 6 until the open position of the cowl cover 6 is detected by the notch 22a of the rotary terminal plate 22. When the open position of the cowl cover 6 is detected, the cover drive motor
13 the operation of the stops, the blower motor 27a is operated at a maximum air volume thereafter (Step S ₅ ~S _7). Thus, whether the inside and outside air changeover switch 37 is shy, if it is released to set the maximum air flow, the cover drive motor 13 is closing operation (Step S ₈ ~S _10).

Therefore, the cowl cover 6 is opened only when the blower 27 has a large air volume when the wiper 14 is in the non-operating state, and the introduction of outside air corresponding to the air volume is secured. When the cover drive motor 13 operates, the blower motor 27a
Does not operate at maximum air flow, both motors 1
There is no problem of a large voltage drop due to simultaneous operation of 3, 27a, and a battery with a small capacity will suffice.

-Control Example 2-This example is shown in Figs. 8 to 10, and the cover drive motor 13 is adapted to be operated in response to a command from the cowl control unit 60. That is, the cowl control unit 60 includes first switch means (large air volume setting detection means) 48 that is turned on when the air volume adjusting device 38 has a large air volume,
When there is an ON signal from both the second switch means (outside air introduction detecting means) 49 which is turned on when the inside / outside air changeover switch 37 is the outside air, the cowl cover open signal is received via the AND circuit 50 and the cover drive motor is received. It is designed to open 13. In this case, the cowl control unit 47
Receives the open position signal from the cover position detector (limit switch) 51, stops the cover drive motor 13 and holds the cowl cover 6 in the open state, and also receives the operation signal from the wiper switch 41. If the cowl cover 6 is open, the cowl cover 6 is opened. The first and second switch means 48 and 49 are connected to the same main switch as in the control example 1 via a power supply circuit 52 which supplies a constant voltage.

Then, the blower motor 27a is connected to the large air flow rate setting terminal of the air flow rate control device 38 via the relay switch 58 and the changeover switch 59 interlocking with the inside / outside air changeover switch 37, and the relay switch 58 is energized. Is controlled by a switch means 61 which is turned on and off by a signal from the cowl control unit 60. The cowl control unit 60 includes a delay circuit, receives the signal from the AND circuit 50 when the inside / outside air changeover switch 37 is turned on to the outside air and the air volume adjusting device 38 is set to a large air volume, and the cover drive motor 13 It activates immediately and the set time (cowl cover 6
After a lapse of time (more than the time required to open), the switch means 61 is turned on to operate the blower motor 27a.

That is, as shown in the control flow in FIG. 9 and the time chart in FIG. 10, the flow up to step S _{4 in} FIG. 9 is the same as in the control example 1. If the cowl cover 6 is not in the open position in step S ₅ , the cover drive motor 13 is opened and
Actuated timer by the delay circuit, so that allowed to operate the blower motor 27a after a set time T as shown in FIG. 10 (Step S ₆ ~S _8). Step S ₈ to S ₁₁ are the same as that between the step S ₇ to S ₁₀ of the control Example 1.

Therefore, also in this example, it is possible to prevent simultaneous operation of the cover drive motor 13 and the blower motor 27a when a large air volume is set.

[Brief description of drawings]

1 is a perspective view showing a front portion of a vehicle, FIG. 2 is an exploded perspective view showing a cowl cover opening / closing mechanism, and FIG. 3 is a vertical sectional view showing the cowl cover opening / closing mechanism. ,
FIG. 4 is a configuration diagram of an air conditioning duct, FIG. 5 is a circuit diagram of control example 1, FIG. 6 is a flow chart of control in control example 1, FIG. 7 is a time chart of control in control example 1, and FIG. FIG. 9 is a circuit diagram of control example 2, FIG. 9 is a flow chart of control in control example 2, and FIG. 10 is a time chart of control in control example 2. 1 ... Vehicle, 2 ... Front window, 5 ... Cowl box, 6 ... Cowl cover, 10 ... Outside air inlet, 13 ...
… Cover drive motor, 24 …… Inside air inlet, 26 …… Inside / outside air switching device, 27 …… Blower, 27a …… Blower motor, 37…
… Inside / outside air selector switch, 38 …… Air volume control device, 45,49…
… Outside air introduction detection means, 46,48 …… Large air volume setting detection means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takeshi Konishi, 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda Co., Ltd. (56) References

Claims (1)

[Scope of utility model registration request] 1. A cowl box in front of a front windshield of a vehicle is provided with a cowl cover that covers the upper surface of the cowl box so that the upper surface of the cowl box can be opened and closed, and an outside air introduction port for introducing outside air into the vehicle compartment is opened in the cowl box. An electric drive mechanism for opening and closing the cowl cover, an inside / outside air switching device capable of selectively communicating with the outside air introducing port and an inside air introducing port for introducing air in the vehicle interior, and air from the inside / outside air changing device. An electric blower to be sent to the passenger compartment, an air volume adjusting device for adjusting the air volume of the blower, an outside air introduction detecting means for detecting that the inside / outside air switching device has been switched to the outside air introduction, and the air volume adjusting device has a large air volume. The large air flow rate setting detection means for detecting that the internal air / outside air switching device is switched to the outside air flow is detected by the large air flow rate setting detection means and the large air flow rate setting detection means. Therefore, when the large air volume setting of the air volume adjusting device is detected, the drive mechanism is operated first, and the blower operates with a large air volume after the cowl cover is opened.
A movable cowl device for a vehicle, comprising: the drive mechanism and a control means for controlling the operation of the blower.