JPS6268184A - Spoiler device - Google Patents

Abstract

PURPOSE:To prevent a spoiler from large torsion by providing two motors for individually rotating both and positions of the spoiler about fulcrums and stopping both motors when a difference between the rotational amounts of respective motors exceeds a predetermined value. CONSTITUTION:A front spoiler 1 movably mounted to form a portion of a skirt below a bumper in front of a vehicle is pivotably supported by a common bolt 11 inserted through a fulcrum hole in an arm metal 7 mounted on the central portion of the back of spoiler and a hole in the car body side bracket 9. And the spoiler 1 is pivoted by motors ML, MR provided in both end positions of the spoiler 1 at the car body side through drive links 23, 25 and driven links 19, 21. In this case, a difference between current amounts flowing through the respective motors ML, MR is utilized indirectly for a difference between the rotational amounts of motors, and an electric circuit for generating a motor stopping command when the difference between the rotational amounts exceeds a predetermined value is provided.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to a spoiler device with variable wind resistance.

[Description of Prior Art 1 As a conventional spoiler device, for example,
There is one as shown in Japanese Patent No. 189 (front spoiler device).

This publication discloses a front spoiler device in which a spoiler is movable by a single motor and can be moved in and out of the skirt portion of the front portion of the vehicle depending on the vehicle speed.

By the way, although the front spoiler device described in the above publication uses one motor to drive the spoiler, there may be cases where it is desired to drive both ends of the spoiler with two motors depending on the drive angle, load lifting, the size of the device, etc. be.

However, if an attempt is made to drive the spoiler with two motors in this way, there may be a difference in the driving performance of the two Tanabata vehicles. This occurs, for example, when one motor breaks down or when the load on one end of the spoiler becomes too large for some reason. If there is a difference in the drive of the two motors, there is a risk that the spoiler may be subjected to a large twist or a force that may lead to its destruction. Furthermore, there is a risk that the motor may be forced to operate unreasonably or seize up.

[Objective of the Invention 1] This invention improves the above-mentioned problems, and even if two motors are used to drive both ends of the spoiler, the spoiler does not undergo large torsion or destructive force, and both motors do not force the spoiler. It is an object of the present invention to provide a spoiler device that can be operated without any problems.

``Placement of the invention 1 In order to achieve the above object, the present invention includes a spoiler device d that is rotatably supported around a fulcrum, and a spoiler whose both ends are individually positioned around the fulcrum. a motor rotation 1d difference detection circuit that detects the difference in the amount of rotation between the two heaters; a control circuit that stops both the two motors when the motor is detected, and both motors are stopped together before the difference in the amount of rotation between the two motors exceeds a predetermined value.
child .

[Explanation of Examples] An embodiment of this invention will be described below.

FIG. 1 is a perspective view of a vehicle showing several positions of a front spoiler.

The front spoiler 1 is movably attached so as to form part of a skirt portion above a bumper 5 at the front of the vehicle 3.

FIG. 2 is a perspective view showing the attachment structure of the spoiler 1 to the small body.

A arm 7 for rotatably supporting the spoiler 1 is attached to the center of the rear surface of the spoiler 1, and a fulcrum hole is provided above the arm 7.

A bracket 9 is fixed to the vehicle body at a position corresponding to the cross arm 7, and a bolt 11 is inserted by aligning the hole provided in this bracket with the fulcrum hole, and then using a nut 13. A bolt 11 is fixed so that the spoiler 1 is rotatably supported around a fulcrum.

On the other hand, armrests 15.1 are attached to both left and right ends of the back of the spoiler 1
7 are provided, and each of these arms 15 and 17 is provided with an operating hole at a position eccentric to the fulcrum hole.

Driven links 19.21 are installed in these operation holes.A left motor ML and a right motor MR are provided with the stator fixed at positions on the vehicle body corresponding to these arms 15.17. Drive links 23 and 25 are connected to these tanabata movers via an appropriate transmission mechanism.
j is being kicked. Then, the driven link 19.21 and the drive link 23.25 are joined using bolts and nuts as shown in the figure, and the motors 1'VI+-, MR
The spoiler 1 is configured to rotate around a fulcrum as the spoiler 1 rotates.

FIG. 3 shows a configuration diagram of the electric circuit.

The electric circuit includes a drive command circuit 17, motor ML, and motor M.
Two relay drive circuits 29.31 for R and relay 33
．． 35, position switch 37.39, spoiler position determination circuit 41.43, and motor rotation amount difference detection circuit 4.
It consists of 5 and 5. .

The drive command circuit 27 is configured in conjunction with, for example, a vehicle speed sensor, and generates two types of drive command signals for driving the spoiler in the forward or reverse direction when the vehicle speed exceeds a predetermined value or when the vehicle speed falls below a predetermined value. This outputs the following. The drive command signal is output simultaneously to the two motors ML and MR.

The relay drive circuit 29.31 inputs one of the two types of drive command signals from the drive command circuit 27, and operates the relay 33 until it receives a signal reaching the upper limit or lower limit position from the spoiler position determination circuit 41.43. .35 to a predetermined state. That is, when the relay drive circuit 29.31 receives a command signal in the positive direction (upwards) from the drive command circuit 27, for example, the relay drive circuit 29.31 controls the motor ML, until the upper limit reaching signal is input from the spoiler position determination circuit 41.43. Relays 33 and 35 are controlled to drive Mn in the positive direction.

On the contrary, when driving the spoiler in the opposite direction (downward), the relay drive circuits 29 and 31 operate the motors ML and MR until they receive a lower limit reaching signal from the spoiler position determination circuit.
Relays 33, 35 are controlled to drive in the opposite direction.

Relays 33 and 35 have two coils and two contacts that are activated by energizing the coils.

Therefore, by not energizing both coils, motors ML and M
R is stopped. Also, by energizing either one of the coils, the motors ML, Ml? It is possible to drive in forward and reverse directions.

Position switches 37 and 39 include brushes 37a and 39a that are fixed to the motor rotation shaft and rotated, slip rings 37b and 39b that determine the upper limit position of the spoiler, and a slip ring 37 that detects the lower limit position of the spoiler.
c39c. Spoiler position determination circuit 41.
43 inputs signals from these position switches 37 and 39, determines from the state of the input signals whether the spoiler is at the lower limit position, intermediate position, or upper limit position, and controls the relay drive circuit. The upper limit or lower limit position arrival signal is output at 29.31.

The motor rotation amount difference detection circuit 45 is connected to the ground wire t-+, L2 of the relay 33.35, and these ground wires L+, 12
Detects the state of current flowing. In this example, both the ill difference at the start of current passage and the difference in current level are detected, and the time difference is 1t.
When l-j21 becomes more than a predetermined time Δ, or when the current difference li+-:21 becomes more than a predetermined amount Δi, a difference in the amount of rotation of motors ML and MR that is more than a predetermined amount occurs. It is determined that there is. Then, when it is determined that a difference between the rotations of the motors Ml- and MR exceeds a predetermined amount, a command signal 5 is sent to the above-mentioned no-drive circuits 29 and 31 to stop the motors.
Output TOP.

With the above configuration, the motor rotation amount difference detection circuit 45 detects the rotation amount difference between the motors M1- and MR with a time difference Δ1S and a current difference Δ
When the rotation amount difference between the motors ML and MR is (predetermined), the relay drive circuit 2 can be indirectly known by i.
Motor stop command signal 5TOP will be output on 9.31. The relay drive circuit 29.31 inputting this signal S-■○P turns off each contact of the relay 33.35 to turn off the motor M1. -1MR is controlled to stop together.

Therefore, both motors Mc and MR have a rotation speed of more than a predetermined value.
There is no difference, and the spoiler 1 shown in FIG. 2 is not twisted or subjected to destructive forces.

Further, both motors ML and MR are not forced to operate or burnt out.

In addition, in the embodiment described in (g), the difference in the amount of motor rotation is expressed as the time difference Δ
[Or, although an example has been shown in which detection is performed using the current difference Δi, it is also possible to attach predetermined weights Gt and G1 to the time difference Δ and the current difference Δi, and to detect the current difference Δt−Qi+Δ1−Qt. Further, it is also possible to detect only one of Δ11Δ[, although the accuracy is slightly inferior.

[Effects of the Invention] As described above, according to the present invention, even if both ends of the spoiler are driven by two motors, the spoiler does not undergo large twisting or destructive force, and both motors can be driven easily. A spoiler device can be provided that can be operated.

[Brief explanation of drawings]

The drawings all show embodiments of the present invention, and FIG. 1 is a perspective view of a vehicle showing the spoiler attached to the vehicle body, and FIG. 2 is a perspective view showing details of the spoiler attached to the vehicle body. FIG. 3 is a configuration diagram of the electric circuit. 1...Front spoiler ML...Left side motor MR...Right side motor 45...Motor rotation amount difference detection circuit 5TOP...Motor stop command signal Patent applicant Nissan Motor Co., Ltd. S1 Agent
Patent Attorney Yasuo Miyoshi, 6:1. :]-: l
"j,,・Ding 1 1 (-1-'nee-a-1) 1st Iji Figure 2 Figure 3 F

Claims (1)

[Claims] A spoiler rotatably supported around a fulcrum, and 2 in which both end positions of the spoiler are individually rotated around the fulcrum.
and a motor rotation amount difference detection circuit that detects the difference in the amount of rotation between the two motors, and when the circuit detects that the difference in the amount of rotation between the two motors is greater than or equal to a predetermined value. A spoiler device comprising: a control circuit that stops both of the two motors.