JP6527345B2 - Vehicle shutter open / close control device - Google Patents

Description

  The present invention relates to a shutter opening / closing control device for a vehicle provided at a front portion of a vehicle and adjusting an amount of outside air introduced into the front portion.

A front grille and a normally open air inlet are provided at the front of the vehicle, and the engine cools with the cooling air introduced from the air inlet while closing the front grill at high speed and reducing the drag coefficient of the vehicle body. It is known to provide a shutter device for
Patent Document 1 discloses an opening / closing device provided at a front end of a vehicle body for opening and closing a grill opening of a front grill for supplying air to a radiator, the shutter member opening and closing the grill opening, and the shutter member An open / close device is described which comprises a drive means for opening and closing the grille between an open position and a closed position, and a control means for driving and controlling the drive means. When the vehicle speed detected by the vehicle speed sensor becomes, for example, 10 km / h or less, the opening / closing device described in Patent Document 1 moves the shutter member to the open position to open the grill opening and open even after the car stops. By maintaining the shutter member, it is possible to prevent the finger from being pinched by the shutter member while the vehicle is stopped.
Although the vehicle speed sensor is not described in detail in Patent Document 1 above, generally, one that calculates the vehicle speed from the number of tire rotations of the vehicle is widely used.

JP, 2013-133059, A

However, the switchgear described in Patent Document 1 has the following problems.
For example, when a tire is idle on a slippery road surface, when the tire is idled due to an inspection operation or a test of the vehicle, when traveling on a conveyor, etc., the vehicle is not moving but the tire is rotating. Is considered. In such a situation, although the actual vehicle speed is zero, since the tire is rotating, the vehicle speed is detected, which may cause the shutter to be closed even while the vehicle is stopped. In this case, there is a possibility that the hand may be caught, but the prior art has no consideration on this point.

  Therefore, the present invention is intended to solve the above-mentioned problems, and to provide a shutter open / close control device of a vehicle capable of reducing the pinching force even if a human hand or a foreign object is pinched by closing drive of the shutter. I assume.

In order to solve the above problems, a shutter opening / closing control device for a vehicle according to claim 1 comprises a shutter for opening and closing an opening for introducing outside air into a drive source storage chamber for storing a drive source of the vehicle; The first control unit includes a first opening / closing unit for opening / closing, a second opening / closing unit having a smaller opening / closing driving force than the first opening / closing unit, and an opening / closing control unit for controlling the opening / closing of the shutter. The opening / closing control means adjusts the opening / closing driving force by switching between the opening / closing means and the second opening / closing means, and the opening / closing control means adjusts the opening / closing drive force of the shutter, and the detection result of the actual travel of the vehicle. in response to a stop determination unit that determines whether it is detected that not the actual traveling, wherein the driving force adjusting section, the vehicle than the first closing driving force in the non-stop state of the vehicle is real By traveling And adjusting the second closing driving force towards decreases as close drive force when household.

According to such a configuration, the shutter is driven to be closed while the vehicle is stopped by setting the closing driving force while the vehicle is stopped smaller than the closing driving force when the vehicle is not stopped. Also, the clamping force can be reduced. In addition, since it can be closed by normal torque during traveling, even when the outside temperature is low and the grease viscosity of the shutter opening and closing part is high, the wind pressure by the traveling wind is large, etc. be able to.
Further, the opening and closing driving force can be adjusted by simple control only by switching the plurality of opening and closing means.
The shutter open / close control device for a vehicle according to claim 2, wherein the stop determination unit determines that the vehicle speed of the vehicle is equal to or less than a predetermined value, and the driving force adjustment unit determines that the vehicle speed is equal to or less than the predetermined value. The opening / closing driving force is adjusted such that the second closing driving force in the stopped state of the vehicle is smaller than the first closing driving force in the non-stopped state of the vehicle.

The shutter open / close control device for a vehicle according to claim 2, wherein the stop determination unit receives the detection result of the actual travel of the vehicle to determine that the vehicle is actually stopped, and the driving force adjustment unit The present invention is characterized in that the opening / closing driving force is adjusted such that the second closing driving force at which the vehicle is actually stopped becomes smaller than the first closing driving force in the non-stop state of the vehicle.

  According to such a configuration, it is possible to adjust the opening and closing driving force by simple control only by switching the plurality of opening and closing means.

  According to the present invention, it is possible to provide an opening / closing control device of a shutter of a vehicle which can reduce a pinching force even if a human hand or a foreign substance is pinched by closing drive of the shutter.

FIG. 1 is a perspective view of a front portion of a vehicle body to which a shutter opening / closing control device of a vehicle according to a first embodiment of the present invention is applied. It is AA sectional drawing of FIG. It is principal part sectional drawing of the state which closed the shutter of the shutter opening / closing control apparatus of the vehicle which concerns on the 1st Embodiment of this invention. It is principal part sectional drawing of the state which opened the shutter of the shutter opening / closing control apparatus of the vehicle which concerns on the 1st Embodiment of this invention. It is sectional drawing of the vehicle body front part to which the shutter opening-closing | closing control apparatus of the vehicle which concerns on the 2nd Embodiment of this invention is applied. It is sectional drawing of the vehicle body front part to which the shutter opening / closing control apparatus of the vehicle concerning the modification of the 2nd Embodiment of this invention is applied. It is sectional drawing of the vehicle body front part which applied the shutter opening-closing | closing control apparatus of the vehicle which concerns on the 3rd Embodiment of this invention. It is principal part sectional drawing of the shutter opening / closing control apparatus of the vehicle which concerns on the 3rd Embodiment of this invention.

First Embodiment
A first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. In the description, the same elements will be denoted by the same reference numerals and redundant description will be omitted. Moreover, when demonstrating a direction, it demonstrates based on front and rear, right and left upper and lower sides seen from the driver | operator of a vehicle. In the embodiment of the present invention, “front” is the forward side of the vehicle C, “rear” is the backward side of the vehicle C, “upper” is the vertically upper side, and “lower” is the vertically lower side.
As shown in FIG. 1, on the front of a bulkhead 1 constituting a front body of a vehicle C, a radiator, a shutter open / close control device for the vehicle that controls the amount of traveling wind sent into the engine room (hereinafter referred to as an open / close control device ) 10 is attached.

  As shown in FIG. 2, the open / close control device 10 is provided on the front portion of the vehicle C together with the grille cover 2 and the duct 3, and the air conditioner condenser 4 and the radiator 5 are provided behind it. There is. While the vehicle C is traveling, outside air is guided by the grille cover 2 and the duct 3 to the air conditioner condenser 4 and the radiator 5. The air conditioner condenser 4 constitutes a refrigeration cycle of an air conditioner of the vehicle C together with a compressor and an evaporator (all not shown). Moreover, the radiator 5 is for cooling the internal combustion engine which is a motive power source of the vehicle C.

As shown in FIGS. 1 and 2, the opening / closing control device 10 is attached to the shutter 11 for adjusting the flow rate of the outside air introduced to the condenser 4 for the air conditioner and the like, and attached to the bulkhead 1 to support the shutter 11 The shutter base 12 includes a plurality of vertically long support members 13 (see FIG. 1) provided on the shutter base 12, and an open / close control unit 30 that controls the open / close of the shutter 11. The opening and closing control means 30 will be described later.
As shown in FIG. 2, the grille cover 2 has a grille 2 a, and the duct 3 has a front end connected to the grill 2 a and a rear end connected to the shutter base 12.

<Shutter>
As shown in FIGS. 3 and 4, the shutter 11 is of a normally open type, and has a plurality of shafts 21 and fins 22 whose upper end 22a is rotatably attached to the shaft 21; And a slide link 23 connected to the back surface 22 c of the fin 22 via a joint 24.
The shaft 21 is fixed to the shutter base 12 and the vertically long support member 13 (see FIG. 1), extends in the left-right direction of the vehicle C, and is lined up at a predetermined interval in the vertical direction. The upper end 22 a of the fin 22 is attached to the shaft 21.

The fins 22 project rearward from the upper end 22a, the lower end 22b, the back surface 22c, and the back surface 22c, are separated by a predetermined distance, are bent in an L shape, and extend horizontally parallel to the back surface 22c. And a shaft portion 22d.
The upper end 22a of the fin 22 is pivotally supported by the shaft 21 and the rotation shaft 22d is attached to the rear of the back 22c. Since the upper end portion 22a is pivotally supported by the shaft 21, the fin 22 can be opened by moving the rotary shaft portion 22d to the rear upper side, and the rotary shaft portion 22d can be opened to the front lower side. Can move the fins 22 closed. The fins 22 are positioned substantially in the vertical direction when the main body is closed, and are pivoted back to the substantially horizontal direction when the main body portion is opened. Further, when the fins 22 are closed, the lower end 22 b of the upper fin 22 abuts on the upper end 22 a of the lower fin 22. Thereby, at the time of closing, the lower end 22b of the upper stage fin 20 and the upper end 22a of the lower stage fin 22 abut each other without a gap, whereby the introduction of the traveling wind is prevented.

The joint 24 includes an abutting portion 24 a that abuts on the back surface 22 c of the fin 22, a curved portion 24 b that fits the rotary shaft portion 22 d of the fin 22 by approximately half a circumference and rotatably holds the slide link 23. And an attachment portion 24c attached to the
The curved portion 24 b of the joint 24 rotatably holds the rotation shaft portion 22 d of the fin 22. For this reason, the fins 22 can be rotated by moving the joint 24. Further, the joint 24 pushes the rear surface 22c of the fin 22 by the abutment part 24a abutting on the rear surface 22c of the fin 22, and keeps the open / close position of the fin 22 at the proper position. The attachment portion 24c of the joint 24 is attached to the slide link 23, and transmits the vertical movement of the slide link 23 to the rotation shaft portion 22d of the fin 22 fitted to the bending portion 24b.

The slide link 23 extends in the vertical direction, and is connected to the rotation shaft 31 a of the first rotating machine 31 (a part of the first opening and closing means) via the connection pin 25 and the first arm link 26.
The first rotating machine 31 (first opening and closing means) is a torque motor that rotates within a range of rotation angles in which the rotation shaft 31a is limited, and utilizes a torque generated on the rotation shaft 31a.
An upper stopper and a lower stopper (not shown) are attached to the shutter base 12. The upper and lower stoppers are disposed above and below the slide link 23, respectively, and the movement of the shutter 11 including the slide link 23 is restricted by the upper and lower stoppers.

As shown in FIGS. 2 and 3, when the fins 22 of the shutter 11 are in a closed state (fully closed), the traveling air is not guided from the vent 6 into the radiator 5 and the engine room.
Further, as shown in FIG. 2 and FIG. 4, when the fins 22 of the shutter 11 are open (full open) and the vehicle C is traveling, the traveling wind introduced from the grille 2a of the grille cover 2 is Heat is exchanged by passing through the duct 3 and between the fins 22 and passing through the air conditioner condenser 4 and the radiator 5. Furthermore, the traveling wind reaches the inside of the engine room behind the radiator 5.

<Opening and closing control means>
As shown in FIG. 2, the open / close control means 30 comprises a first rotating machine 31 (part of the first open / close means) for opening and closing the shutter 11 with a predetermined opening / closing drive force, and a control unit 40 for adjusting the opening / closing drive force. Equipped with
The control unit 40 is configured by a microcomputer including a CPU, a RAM, a ROM, an input / output interface, and the like.
The control unit 40 has a driving force adjusting unit 40 a, and the driving force adjusting unit 40 a adjusts the driving force of “opening” and “closing” of the shutter 11. Specifically, in the driving force adjustment unit 40a, the closing driving force (closing torque) for driving the shutter 11 in the closing direction is smaller than the opening driving force (opening torque) for driving the shutter 11 in the opening direction. Adjust the opening and closing driving force so that Specific methods for changing the opening driving force (opening torque) and the closing driving force (closing torque) are, for example, as follows. In the present embodiment, a torque motor is used for the first rotating machine 31. The torque motor can change the torque or the number of revolutions over a wide range by changing the input voltage. The driving force adjustment unit 40 a reduces the closing driving force (closing torque) by changing the command value of the input voltage applied to the first rotating machine 31 when the shutter 11 is opened and closed. As another method, a gear may be provided to transmit the rotational driving force of the rotary shaft 31a, and the gear ratio may be changed between the opening time and the closing time.

Hereinafter, the operation of the switching control device 10 configured as described above will be described.
[Vehicle C running at low speed]
During low-speed travel of the vehicle C, the open / close control means 30 controls the fins 22 of the shutter 11 in an open state (full open). Here, when the vehicle C shifts from low speed traveling to high speed traveling, the open / close control means 30 closes the shutter 11. At this time, the driving force adjustment unit 40a opens and closes so that the closing driving force (closing torque) driving the shutter 11 in the closing direction is smaller than the opening driving force (opening torque) driving the shutter 11 in the opening direction. Adjust the driving force.

[Vehicle C driving at high speed]
When the vehicle C shifts from high speed traveling to low speed traveling, the open / close control means 30 controls the fins 22 of the shutter 11 in an open state (full open). In this case, the driving force adjustment unit 40 a opens and closes so that the opening driving force (opening torque) for driving the shutter 11 in the opening direction is larger than the closing driving force (closing torque) for driving the shutter 11. Adjust the driving force.

  As described above, in the present embodiment, the opening / closing control unit 30 sets the closing driving force to be smaller than the opening driving force by the driving force adjustment unit 40a, so that the human hand or the foreign object is caught by the closing drive of the shutter 11. Even if, it can make the pinching force small. In addition, since it can be released by normal torque at the time of opening, even when the outside temperature is low and the grease viscosity of the opening and closing part of the shutter 11 is high or when a foreign object is caught, etc. can do.

Second Embodiment
A second embodiment of the present invention will be described in detail with reference to FIG. The same reference numerals as in FIG. 2 denote the same parts as in FIG.
As shown in FIG. 5, the control unit 40 of the opening / closing control device 10 of the present embodiment further includes a stop determination unit 40 b. Further, a vehicle speed sensor 41 is connected to the control unit 40.
The vehicle speed sensor 41 detects a vehicle speed V, which is the speed of the vehicle C, and outputs a detection signal to the control unit 40. The vehicle speed sensor 41 calculates the vehicle speed from, for example, the number of tire rotations of the vehicle C.
The stop determination unit 40 b determines whether the vehicle C is stopped based on the vehicle speed V detected by the vehicle speed sensor 41. The stop determination unit 40b also determines the low speed and high speed traveling of the vehicle C.
The driving force adjustment unit 40a adjusts the opening / closing driving force so that the second closing driving force in the stopped state of the vehicle C becomes smaller than the first closing driving force in the non-stopped state of the vehicle C.

Hereinafter, the operation of the switching control device 10 configured as described above will be described.
[During traveling vehicle C]
The control unit 40 determines the traveling state of the vehicle C based on the vehicle speed detection signal of the vehicle speed sensor 41 and the like.
While the vehicle C is traveling, the open / close control means 30 controls the fins 22 of the shutter 11 in an open state (full open). The traveling wind introduced from the grille 2 a of the grille cover 2 exchanges heat by passing through the duct 3, passing between the fins 22 and passing through the air conditioner condenser 4 and the radiator 5. Furthermore, the traveling wind reaches the inside of the engine room behind the radiator 5.

[Vehicle C driving at high speed]
When the vehicle C shifts to high speed traveling, the opening / closing control means 30 controls the fins 22 of the shutter 11 in a closed state (full closing). In this case, the driving force adjustment unit 40 a closes the fins 22 of the shutter 11 with a first closing driving force that is larger than the second closing driving force when the vehicle C is in the stopped state. When the vehicle C shifts to high speed traveling, the shutter 11 is closed quickly against strong traveling wind. By closing the shutter 11, the traveling resistance of the vehicle C can be reduced. You can also earn a downforce.

[When traveling from low speed to stop]
Basically, when the vehicle speed V detected by the vehicle speed sensor 41 becomes, for example, 10 km / h or less, the open / close control device 10 moves the shutter 11 to the open position to open the grille 2a of the grille cover 2 and stop the vehicle C Keep open even after you In this case, the driving force adjustment unit 40a adjusts the opening / closing driving force so that the second closing driving force in the stopped state of the vehicle C becomes smaller than the first closing driving force in the non-stopped state of the vehicle C. This prevents the shutter 11 from pinching a finger or the like while the vehicle C is stopped. Further, even if a finger or the like is pinched in the shutter 11 while the vehicle C is stopped, the shutter 11 is closed by a relatively weak chain driving force, so there is no risk of damaging the finger or the like.

[Modification]
As shown in FIG. 6, an actual travel detection unit 42 is further connected to the control unit 40 of the opening and closing control device 10 according to the modification of the present embodiment.
The actual traveling detection unit 42 detects whether the vehicle C is actually traveling. For example, the actual traveling detection unit 42 is provided with an imaging unit and an image analysis unit in the vehicle C, and detects a traveling state of the vehicle C by analyzing a photographed image of a road surface. As another method, the vehicle C is provided with position information acquisition means such as GPS, and the position information of the vehicle C is acquired to detect whether the vehicle C is actually traveling. Furthermore, as another method, a wind speed sensor is provided in the vehicle C, and a traveling wind blown into the vehicle C is detected to detect whether the vehicle C is actually traveling. The actual travel of the vehicle C may be determined using these methods in combination.

The vehicle speed sensor 41 calculates the vehicle speed V from, for example, the number of tire rotations of the vehicle C. Therefore, even when the vehicle is not actually traveling, the vehicle speed V may be detected when the tire is rotating (idling). For example, when a tire is idle on a slippery road surface, when the tire is idled by an inspection operation or a test of the vehicle C, or when traveling on a conveyor, the tire is rotating although the vehicle body is not moving The situation is conceivable. In such a situation, although the actual vehicle speed V is zero, the vehicle speed sensor 41 detects the vehicle speed V because the tire is rotating. In this case, even when the vehicle C is stopped, the shutter 11 may be closed, and the shutter 11 may pinch a hand.
In the present modification, the actual traveling detection unit 42 is provided, and the actual traveling of the vehicle C is detected by analysis of a photographed image of a road surface and acquisition of position information. Even when the vehicle speed sensor 41 detects the vehicle speed V, the driving force adjustment unit 40a performs a relatively weak closing drive similar to that during stopping of the vehicle C when the actual traveling detection unit 42 detects that the actual traveling is not performed. The closing drive force is adjusted to close the shutter 11 by force.

  As a result, when the vehicle is not actually traveling, the vehicle speed V is detected, and it is possible to prevent the shutter 11 from being closed by the strong closing driving force. That is, when the vehicle C is not actually traveling, even if the shutter 11 is driven to be closed and a human hand or a foreign object is caught, the pinching force can be reduced.

In addition, since it can be closed by normal torque during traveling, even when the outside temperature is low and the grease viscosity of the opening and closing part of the shutter 11 is high or the wind pressure by the traveling wind is large, etc. Can be open to you.
For example, when the fin 22 of the shutter 11 is changed from "open" to "close" when the vehicle speed is zero or in the "parking range state", torque restriction is performed to reduce the pinching force and cause injury. To prevent. When the fins 22 of the shutter 11 are changed from "closed" to "open", the normal torque can be used to ensure that the open state can be achieved even in the case of freezing or the like. Here, during traveling, neither “open” to “close” nor “close” to “open” limits torque. By performing the opening and closing control, conflicting conditions can be satisfied. The opening and closing of the shutter 11 tends to increase the torque in response to dirt, snow, freezing and the like. In the present embodiment, it is possible to improve the safety while coping with the future tendency of increasing torque.

Third Embodiment
The third embodiment of the present invention will be described in detail with reference to FIGS. 7 and 8. The same reference numerals as in FIGS. 2 to 4 denote the same parts as in FIGS.
As shown in FIG. 7, the opening / closing control means 30 of the opening / closing control device 10 of the present embodiment includes a first rotating machine 31 (part of the first opening / closing means) that opens and closes the shutter 11 with a predetermined opening / closing driving force. A second rotating machine 32 (a part of the second opening and closing means) having a smaller opening and closing driving force than the one rotating machine 31 and a control unit 40 for adjusting the opening and closing driving force are provided.
As shown in FIG. 8, the rear end 24b of the uppermost joint 24 is connected to the rotation shaft 32a of the second rotating machine 32 (part of the second opening / closing means) via the second arm link 28. There is.

In the present embodiment, the first rotating machine 31 and the second rotating machine 32 are two motors having originally different output torques. The first rotating machine 31 and the second rotating machine 32 may be ordinary motors as long as they have different opening and closing driving forces.
The first rotating machine 31 (first opening and closing means) opens and closes the shutter 11 during normal use, and the second rotating machine 32 (second opening and closing means) closes the shutter 11 at closing.
The opening and closing control means 30 adjusts the opening and closing driving force by switching the first rotating machine 31 and the second rotating machine 32. Since the first rotating machine 31 and the second rotating machine 32 are originally motors having different output torques, the opening / closing control means 30 need only switch the energization to the first rotating machine 31 or the second rotating machine 32. .

  As described above, in the present embodiment, the opening / closing driving force can be adjusted by simple control only by switching the plurality of opening / closing means.

[Modification]
The present invention is not limited to the above embodiments, and various modifications and changes are possible within the scope of the technical idea thereof, and the present invention extends to the modified and changed inventions. Of course.
For example, in the third embodiment, an example in which the first rotating machine 31 and the second rotating machine 32 are applied to the closing control of the shutter 11 of the second embodiment has been described. However, in the shutter 11 of the first embodiment The present invention may be applied to open / close control. That is, when applied to the opening and closing control of the shutter 11 of the first embodiment, the shutter 11 is opened by the rotating machine with the largest torque among the first and second rotating machines 31, 32, and the shutter by the rotating machine with the smaller torque 11 may be closed.
Moreover, it is applicable to the vehicle carrying a fuel cell system.

Reference Signs List 1 bulkhead 2 grille cover 2a grille 3 duct 4 condenser for air conditioner 5 radiator 10 vehicle shutter opening / closing control device 11 shutter 12 shutter base 13 longitudinal support member 21 shaft 22 fin 23 slide link 24 joint 25 connecting pin 26 first arm Link 28 Second Arm Link 30 Opening / closing control means 31 First rotating machine (part of the first opening / closing means)
32 Second rotating machine (part of the second opening and closing means)
40 control unit 40a driving force adjustment unit 40b stop determination unit 41 vehicle speed sensor 42 actual traveling detection unit C vehicle

Claims (2)

A shutter for opening and closing an opening for introducing outside air into a drive source storage chamber for storing a drive source of a vehicle;
First opening and closing means for opening and closing the shutter;
Second opening / closing means having a smaller opening / closing driving force than the first opening / closing means;
An opening / closing control unit that controls the opening / closing of the shutter;
The opening and closing control means adjusts the opening and closing driving force by switching between the first opening and closing means and the second opening and closing means.
The opening / closing control means is
A driving force adjustment unit that adjusts the opening and closing driving force of the shutter;
And a stop determination unit that receives the detection result of the actual travel of the vehicle and determines whether it is detected that the vehicle is not the actual travel .
The driving force adjusting unit adjusts the opening / closing driving force so that the second closing driving force in the case where the vehicle is not actually traveling becomes smaller than the first closing driving force in the non-stop state of the vehicle. Shutter opening / closing control device for vehicles. The stop determination unit determines that the vehicle is actually stopped based on the detection result of the actual travel of the vehicle.
The driving force adjusting unit includes a feature to adjust the non the vehicle than the first closing driving force in the stop state is actually as the direction of the second closing driving force parked decreases close drive force of the vehicle The shutter opening / closing control device for a vehicle according to claim 1.

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