JPH0542565U - Window glass opening and closing control device - Google Patents

Abstract

(57) [Abstract] [Purpose] A combination of a small number of optical elements is used for full-closed detection and pinch detection of window glass. A first optical element 3 is provided on one side wall of a window frame that supports a window glass, and a second optical element 4 is provided on the other side. The first optical element 3 and the second optical element 4 are provided at positions facing each other so that their optical axes coincide with each other when the window glass is opened. The third optical element 5 is provided at a position adjacent to the first optical element 3 or the second optical element 4, and the first optical element 3 or the second optical element 4 is provided through the reflection part of the window glass when the window glass is fully closed. And the optical axes are aligned.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a window glass opening / closing control device for automatically controlling opening / closing of a window glass of a vehicle or the like.

[0002]

[Prior Art]

 Conventionally, this type of technique is known as disclosed in Japanese Patent Laid-Open No. 2-262420. This product is equipped with an optical sensor to detect an obstacle existing when the window glass moves in the closing direction, and this optical sensor detects an object sandwiched by the window glass, while detecting the optical sensor at a predetermined timing. It was configured to judge whether the window glass was fully closed depending on the condition.

[0003]

[Problems to be solved by the device]

 However, the above-described conventional technique requires a means for measuring a predetermined timing to determine whether or not the window glass is fully closed, such as a synchronization signal generating circuit or a synchronous detection circuit. In addition, there was a possibility that problems such as deviation of the predetermined timing due to radio noise may occur.

[0004]

[Means for Solving the Problems]

 The present invention solves the above-mentioned problems of the prior art, and also provides a window glass opening / closing control device for the purpose of performing detection of full closing and pinching detection of a window glass by a combination of a small number of, for example, three optical elements. provide. In order to achieve the object, a window glass having a reflection portion on the outer peripheral surface thereof, a first optical element provided on a side wall surface of the window frame supporting the window glass, and the first light of the window frame are provided. A second optical element provided on a side wall surface facing the element and having an optical axis aligned with that of the first optical element when the window glass is opened; and adjacent to at least one of the first optical element and the second optical element. A third optical element which is arranged and whose optical axis coincides with at least one of the first optical element and the second optical element via the reflecting portion of the window glass when the window glass is fully closed. There is provided a window glass opening / closing control device.

[0005]

【Example】

 1 to 4 show a first preferred embodiment of the present invention. Reference numeral 1 denotes a window glass of a vehicle 2, and an outer peripheral surface 1a of the window glass 1 has a reflecting portion 1b as shown in FIG. Reference numerals 3, 4 and 5 are first, second and third optical elements. The first optical element 3 is made of a light emitting diode and is provided on the side wall surface 2b of the window frame 2a supporting the window glass 1. The second optical element 4 is composed of a phototransistor and is provided on the side wall surface 2b of the window frame 2a facing the first optical element 3. The optical axis of the second optical element 4 coincides with that of the first optical element 3 when the window glass 1 is opened. The third optical element 5 is composed of a phototransistor and is arranged adjacent to the first optical element 3. The optical axis of the third optical element 5 coincides with that of the first optical element 3 via the reflection portion 1b of the window glass 1 when the window glass 1 is fully closed.

The first, second and third optical elements 3, 4 and 5 are connected to the control circuit 6 as shown in FIG. The control circuit 6 receives a signal from the power window switch 7 to operate the motor 8 and the first optical element 3, and receives a signal from the second optical element 4 and the third optical element 5 to stop or reverse the motor 8. The calculation unit 6a, the driving unit 6b, the transistor 6c, and the resistors 6d to 6g are connected to each other. The power window switch 7 is a neutral return type switch and has a movable contact piece 7a, a fixed contact 7b on the closing side of the window glass 1 and a fixed contact 7c on the open side. Incidentally, 9 is a DC power supply.

Next, the operation of the first embodiment will be described with reference to the flowchart shown in FIG. This flow chart explains a part of the program stored in the calculation unit 6a, and shows the closing mode of the window glass 1. First, in step 101, it is determined whether or not the power window switch 7 has been turned on to the side where the window glass 1 is closed, and if YES, the process proceeds to step 102. In step 102, it is judged whether or not the third optical element 5 is ON. If the judgment is YES, the process proceeds to step 103, and if the judgment is NO, the process proceeds to step 105. For example, when the window glass 1 is in a substantially fully closed state, the light beam 11 from the first optical element 3 is reflected by the reflection portion 1b of the window glass 1 and enters the third optical element 5, so in step 102 above. The decision to turn is YES. When the window glass 1 is in the open state, the light beam 11 from the first optical element 3 does not enter the third optical element 5, and the determination in step 102 is NO.

In step 103, it is determined whether or not the second optical element 4 is ON. If YES, the process proceeds to step 101, and if NO, the process proceeds to step 104. When both the third optical element 5 and the second optical element 4 are in the ON state, the determination in step 103 is YES. In this case, the window glass 1 is incompletely closed or is in a malfunction state. Therefore, the process returns to step 101. In step 104, the motor 8 is stopped when the window glass 1 is fully closed.

On the other hand, if the determination of NO is made in step 102, it is determined in step 105 whether or not the second optical element 4 is ON, and if the determination is YES, the process proceeds to step 106 to confirm NO. The judgment proceeds to 107. When the third optical element 5 is in the OFF state and the second optical element 4 is in the ON state, the determination in step 105 is YES, but in this case, no foreign matter is present between the window glass 1 and the window frame 2a. The step S106 continues the closing operation of the window glass 1.

Further, when both the third optical element 5 and the second optical element 4 are in the OFF state, the determination in step 105 is NO, but in this case, there is a foreign substance between the window glass 1 and the window frame 2a. This means that there is a risk of causing a trapping accident, and in step 107, the motor 8 is reversed by a predetermined amount. That is, in step 107, the closing operation of the window glass 1 is interrupted and the window glass 1 is opened by a predetermined amount. The light beam l1 derived from the first optical element 3 can use a coded optical signal in order to prevent malfunction due to extraneous light beams.

[0011]

[Other Examples]

 In the above-described embodiment, the first optical element 3 is the light emitting portion and the second optical element 4 and the third optical element 5 are the light receiving portions, that is, two light receiving portions are provided for one light emitting portion. However, the present invention is not limited to this. For example, as shown in FIG. 5, the first optical element 3 may be the light receiving portion, and the second optical element 4 and the third optical element 5 may be the light emitting portion. In this case, in order to discriminate whether the light ray received by the first optical element 3 is the light ray 12 from the second optical element 4 or the light ray 13 from the third optical element 5, the second optical element 4 The third optical element 5 and the third optical element 5 may be alternately operated in a time division manner, or the second optical element 4 and the third optical element 5 may be controlled so as to derive optical signals of different codes.

[0012]

[Effect of the device]

 Since the present invention has the above-described configuration and operation, it is not necessary to provide a means for measuring a predetermined timing to determine whether or not the window glass is fully closed, as in the prior art, and the predetermined timing can be maintained due to radio noise or the like. There is no problem of shifting, and further, it has an excellent effect that it is possible to detect whether the window glass is fully closed or pinched by a combination of a small number of photoelements.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing a first preferred embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state in which the optical elements shown in FIG. 1 are arranged in a window frame.

FIG. 3 is a perspective view of a main part of the window glass shown in FIG.

FIG. 4 is a flowchart showing the operation of the circuit shown in FIG.

FIG. 5 is an explanatory view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window glass 1b Reflection part 2a Window frame 2b Side wall surface 3 First optical element 4 Second optical element 5 Third optical element

Claims (1)

[Scope of utility model registration request] 1. A window glass opening / closing control device having an automatic stop function and a pinching accident prevention function when the window glass is fully closed, and a window glass having a reflecting portion on its outer peripheral surface, and supporting the window glass. A first optical element provided on a side wall surface of the window frame, and a first optical element provided on a side wall surface of the window frame facing the first optical element, and having an optical axis aligned with that of the first optical element when the window glass is opened. Two optical elements, and the first optical element and the second optical element, which are arranged adjacent to at least one of the first optical element and the second optical element, and through the reflection part of the window glass when the window glass is fully closed. A window glass opening / closing control device comprising: a third optical element whose optical axis coincides with at least one of the elements.