JP3740951B2 - Pinching determination device and switching device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pinching determination device and a switching device for determining whether or not an object is pinched when an opening / closing portion closes an opening, and among them, an electric door such as a slide door of an automobile, a power window, and an electric sunroof The present invention relates to a safety device for an electric window.
[0002]
[Prior art]
Conventional pinch determination devices and opening / closing devices are disclosed in, for example, Japanese Patent Laid-Open Nos. 10-2646652 and 11-2222036. This is one in which pressure sensitive means is arranged at the vertical end in the closing direction of the sliding door in order to detect pinching between the body opening of the automobile and the sliding door. A pressure sensitive switch with electrodes facing each other was used. When an object is sandwiched between the body opening and the sliding door, the electrodes of the pressure-sensitive switch come into contact with each other by pressing due to the contact of the object and the pressure-sensitive switch is turned on to detect the sandwiching.
[0003]
[Problems to be solved by the invention]
However, the conventional pinch determination device and the opening / closing device have the following problems.
[0004]
Japanese Patent Application Laid-Open Nos. 10-264652 and 11-2222036 show an apparatus for determining pinching of an automobile slide door and an opening / closing device. Basically, as shown in FIG. 13 to FIG. It is a configuration. Both have shown the cross section of the vertical end part of a vehicle body and a sliding door. FIG. 13 shows a state in which the sliding door is opened, and moves along a path indicated by an arrow 53 when the sliding door is closed. FIG. 14 shows a state in which the slide door is closed, and the vehicle body 2 and the slide door 1 are brought into close contact with each other by the seal portion 11. The pressure-sensitive switch 54 is fixed to the slide door 1 to detect the object being caught, but the distance is set so as not to make a false detection by contacting the vehicle body 2 with the slide door 1 closed. Yes. The pressure-sensitive switch 54 has a pair of electrodes 56 and 57 on both sides of the gap 55. For example, when the object 10 in the external region is sandwiched as shown in FIG. Can conduct contact and detect pinching reliably. Similarly, it is considered that pinching can be detected for an object that extends from the outer area to the inner area.
[0005]
However, in the conventional example, when the object 10 in the inner region is sandwiched as shown in FIG. 16, the object 10 is sandwiched between the slide door 1 and the seal portion 11, and the object 10 does not contact the pressure sensitive switch 54. It is conceivable that pinching cannot be determined. For example, when a weak and small object such as a finger or foot of a child sitting on the seat is caught, a considerable impact is given.
[0006]
The present invention solves such a conventional problem, and includes a pinching determination device and an opening / closing device that can reliably determine not only an object in an outer region but also an object in an inner region and reduce the impact on the object. The purpose is to provide.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the pinch determination device and the opening / closing device of the present invention have an opening portion. Car body with , A sliding door having a predetermined thickness in the inside and outside of the opening, and opening and closing the opening; , The sliding door An inner region and an outer region delimited by closure of The sliding door When the object in the inner region is sandwiched between the opening and the opening / closing portion, and the object in the outer region is arranged with the opening. The sliding door In any case, a sensing unit that generates an output, and a determination unit that determines the presence or absence of the pinching based on the output of the sensing unit.
[0008]
According to the above invention, since the sensing means generates an output regardless of whether an object in the inner region is sandwiched or an object in the outer region is sandwiched, it is possible to reliably determine the trapping in any sandwich.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The pinch determination device according to claim 1 of the present invention includes an opening portion. Car body with , A sliding door having a predetermined thickness in the inside and outside of the opening, and opening and closing the opening; , The sliding door An inner region and an outer region delimited by closure of The sliding door Are disposed on the inner region side and the outer region side, respectively. slide door And when the object in the outer region is connected to the opening The sliding door In any case, a sensing unit that generates an output, and a determination unit that determines the presence or absence of the pinching based on the output of the sensing unit.
[0010]
Since the sensing means generates an output even when an object in the inner region or an object in the outer region is sandwiched, it is possible to reliably determine the jamming in any sandwich.
[0011]
The pinching determination device according to claim 2 of the present invention is configured to generate an output in any case by folding the long-shaped sensing means and arranging the sensing means on the inner region side and the outer region side.
[0012]
Further, it is possible to reliably determine the pinching in every pinching by the sensing means on the inner area side and the outer area side, and it is not necessary to increase the number of sensing means.
[0013]
In the pinching determination device according to claim 3 of the present invention, the sensing means is a cable-shaped piezoelectric sensor.
[0014]
The cable-shaped piezoelectric sensor can be made smaller in diameter than the pressure-sensitive switch, and there is no risk of malfunction due to folding back (if it is a pressure-sensitive switch, it has a small radius of curvature). Can be folded and placed.
[0015]
Claims of the invention 4 The pinching determination apparatus according to the present invention has a first sensing means for the inner area and a second sensing means for the outer area, so that an output is generated in either case.
[0016]
And since it has each sensing means corresponding to a field, it can judge pinching reliably in every pinching.
[0017]
Claims of the invention 5 The pinching determination device according to the present invention is configured such that, when the first sensing unit and the second sensing unit generate outputs simultaneously, the determination unit determines that the pinch is not pinched but completely closed.
[0018]
Further, it is possible to have a function of determining closing that is difficult with only one sensing means.
[0019]
Claims of the invention 6 The pinching determination device according to claim 1 to claim 1. 5 The pinch determination device according to any one of slide door Driving means for driving the control means for controlling the driving means according to the determination of the pinching determination device, slide door If the pinch determination device determines that pinch is present when the pin is moving in the closing direction, the control means slide door The driving means is controlled so as to stop the movement or move in the opening direction by reversing the moving direction.
[0020]
Further, since the pinching can be stopped or released by the pinching determination, the impact on the pinched object can be reduced, and a safe switching device can be obtained.
[0021]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0022]
Example 1
The invention of the first embodiment will be described with reference to FIGS.
[0023]
FIG. 1 and FIG. 2 are block diagrams of the pinch determination device and the opening / closing device according to the first embodiment, showing a case where the device is applied to a sliding door 1 of an automobile as an opening / closing portion. FIG. 1 shows the sliding door 1 as seen from the inside of the vehicle, and FIG. 2 shows the external configuration of the automobile on which the sliding door 1 is mounted. The sliding door 1 as an opening / closing portion is configured to be openable / closable with respect to a vehicle body 2 forming an opening, and the interior 3 of the vehicle interior and the exterior 4 of the exterior region are separated by the slide door 1. A cable-like piezoelectric sensor 5 is folded at the upper part as a sensing means at the vertical end of the slide door 1. Reference numeral 6 denotes an elastic body for fixing the piezoelectric sensor 5 to the slide door 1, and 7 denotes determination means for determining whether an object is caught between the slide door 1 and the vehicle body 2 based on an output signal of the piezoelectric sensor 5. The drive means 8 for opening and closing the slide door 1 can drive the slide door 1 in the opening direction, drive it in the closing direction, or stop it according to a signal from the control means 9.
[0024]
In this embodiment, the sliding door 1, the vehicle body 2 forming the opening, the piezoelectric sensor 5, and the determination means 7 are defined as a pinching determination device by generating a determination output when an object is pinched. Further, the drive means 8 and the control means 9 added thereto are defined as an opening / closing device by changing or stopping the moving direction of the slide door 1 based on the determination output.
[0025]
FIGS. 3 and 4 are configuration diagrams showing a cross section taken along line AA ′ of FIG. 2 and correspond to FIGS. 13 to 16 of the conventional example. FIG. 3 shows a case where an object 10 in the vehicle interior 3 is sandwiched, and FIG. 4 shows a case where the slide door 1 is normally closed. Reference numeral 11 denotes a seal portion for closely contacting the vehicle body and the slide door when the slide door 1 is closed.
[0026]
In FIG. 3, the object 10 is about to be sandwiched between the slide door 1 and the vehicle body 2, and a piezoelectric sensor 5 a on the vehicle interior 3 side and a piezoelectric sensor 5 b on the vehicle exterior 4 side are obtained by folding back one piezoelectric sensor at the top. Since they are arranged, the object 10 comes into contact with the piezoelectric sensor 5a via the elastic body 6 and gives a pressing force or displacement. In general, since the piezoelectric sensor generates an output corresponding to a given pressing force and displacement, it can be determined in FIG. 3 that the piezoelectric sensor 5a generates an output and the pinching has occurred. Although not shown, when an object on the outside 4 side of the vehicle is pinched, the pinching can be similarly determined by the piezoelectric sensor 5b, and for an object extending from the inside of the vehicle to the outside of the vehicle, the pinching can be determined by any of the piezoelectric sensors 5a and 5b. Is.
[0027]
Further, in this embodiment, when the sliding door 1 is normally closed as shown in FIG. 4, the piezoelectric sensors 5a and 5b do not come into contact with anything, so that no output is generated and erroneous determination of pinching does not occur.
[0028]
FIG. 5 is a configuration diagram of the piezoelectric sensor 5. The piezoelectric sensor 5 has a coaxial cable-like configuration formed by concentrically laminating a composite piezoelectric layer 12 as a piezoelectric material and a center electrode 13 and an outer electrode 14 as electrodes sandwiching the composite piezoelectric layer 12. In addition, the outermost layer is provided with a protective coating layer 15 and as a whole has a very excellent configuration. The piezoelectric sensor 5 is manufactured by the following process. First, a chlorinated polyethylene sheet and (40 to 70) vol% piezoelectric ceramic (here, lead zirconate titanate) powder are uniformly mixed into a sheet by a roll method. After the sheet is finely cut into pellets, these pellets are continuously extruded together with the center electrode 13 to form the composite piezoelectric layer 12. Then, the outer electrode 14 is wound around the composite piezoelectric layer 12. The coating layer 15 is also continuously extruded around the outer electrode 14. Finally, in order to polarize the composite piezoelectric layer 12, a DC high voltage of (5 to 10) kV / mm is applied between the center electrode 13 and the outer electrode 14.
[0029]
For the chlorinated polyethylene sheet, a mixture of amorphous chlorinated polyethylene and crystalline chlorinated polyethylene is used. In this case, in consideration of extrusion processability, flexibility, piezoelectric properties, etc., 75 wt% of amorphous chlorinated polyethylene having a molecular weight of 60,000 to 150,000 and a molecular weight of 200,000 at a degree of crystallinity (15 to 25)%. It has been experimentally found that chlorinated polyethylene mixed with 25 wt% of ~ 400,000 crystalline chlorinated polyethylene is preferred. This mixed chlorinated polyethylene contains up to about 70vol% of piezoelectric ceramic powder.
You can.
[0030]
When adding the piezoelectric ceramic powder to the mixed chlorinated polyethylene, it is preferable to immerse and dry the piezoelectric ceramic powder in a titanium / coupling agent solution in advance. By this treatment, the surface of the piezoelectric ceramic powder is covered with a hydrophilic group and a hydrophobic group contained in the titanium coupling agent. The hydrophilic group prevents aggregation between the piezoelectric ceramic powders, and the hydrophobic group increases the wettability between the mixed chlorinated polyethylene and the piezoelectric ceramic powder. As a result, the piezoelectric ceramic powder can be uniformly added to the mixed chlorinated polyethylene in a large amount up to 70 vol%. It has been found that the same effect as described above can be obtained by adding a titanium coupling agent during the roll of mixed chlorinated polyethylene and piezoelectric ceramic powder instead of immersion in the titanium coupling agent solution. . This treatment is excellent in that it does not require a special immersion treatment in a titanium / coupling agent solution.
[0031]
The central electrode 13 may be a normal metal single wire, but here, an electrode in which a metal coil 17 is wound around an insulating polymer fiber 16 is used. The insulating polymer fiber 16 and the metal coil 17 are each preferably a polyester fiber commercially used in electric blankets and a copper alloy containing 5 wt% silver.
[0032]
The outer electrode 14 has a configuration in which a belt-like electrode having a metal film bonded on a polymer layer is used and is wound around the composite piezoelectric layer 12. The electrode made of polyethylene terephthalate (PET) as the polymer layer and bonded with an aluminum film has high thermal stability at 120 ° C. and is also mass-produced commercially. 14 is preferable. When this electrode is connected to the determination means 7, it is difficult to solder the aluminum film, so that the connection is made, for example, by caulking or eyelet. Alternatively, a metal single wire coil or a metal braided wire may be wound around the aluminum film of the outer electrode 14 to establish conduction with the aluminum film, and the metal single wire coil or metal braided wire may be sandwiched and soldered to the determination means 7. Since it can be attached, work efficiency can be improved. In order to shield from electrical noise in the external environment, the outer electrode 14 is preferably wound around the composite piezoelectric layer 12 so as to partially overlap.
[0033]
As the covering layer 15, an elastic material such as rubber that is more flexible and flexible than the composite piezoelectric layer 12 is used so that the piezoelectric sensor 5 is easily deformed when pressed by an object being sandwiched. It is preferable to select in consideration of cold resistance, and specifically, to select a material having a low decrease in flexibility at −30 ° C. to 85 ° C. As such rubber, for example, ethylene propylene rubber (EPDM), chloroprene rubber (CR), butyl rubber (IIR), silicon rubber (Si), thermoplastic elastomer, etc. may be used.
[0034]
With the configuration described above, the minimum curvature of the piezoelectric sensor 5 can be up to a radius of 5 mm. In the present embodiment, the single piezoelectric sensor 5 is folded back at the upper part of the slide door 1, but the thickness of the slide door 1 is several centimeters, which is sufficient as a space for folding the piezoelectric sensor 5.
[0035]
In the present embodiment, the covering layer 15 and the elastic body 6 are configured as separate parts, but the present invention is not limited thereto.
However, it may be composed of one part. In this case, there is an effect of reducing parts.
[0036]
FIG. 6 is a block diagram of the determination means 7. The output of the piezoelectric sensor 5 includes an impedance conversion unit 18 composed of an input resistance, an FET, etc., a filter 19 in which a cut-off frequency is set so that only a signal can be taken out by removing noise, and an amplifier 20 that amplifies the signal to a manageable level A comparison unit 21 that determines pinching by comparing with a reference signal is used to transmit a determination output as to whether pinching has occurred to the control means 9. In general, a piezoelectric sensor has high output impedance, and if the connection variation is large, the signal level variation in the subsequent signal processing circuit also becomes large. It is also considered that it is vulnerable to noise. Therefore, first of all, it is connected to the impedance converter 18 and converted to low impedance.
[0037]
In the case of this embodiment, the piezoelectric sensor 5 is folded back, and both ends can be brought to the determination means 7. Therefore, unlike FIG. 6, it is possible to connect the first end of the piezoelectric sensor 5 to the impedance converter 18 and connect the second end of the piezoelectric sensor 5 to the filter 19. That is, the piezoelectric sensor 5 can be inserted between the impedance converter 18 and the filter 19 in FIG. In this case, since there is no free end portion of the piezoelectric sensor 5, there is an effect that it is not necessary to take measures such as shorting of the electrode at the free end portion or contact with other parts.
[0038]
Note that a countermeasure against strong electric field may be taken by adding a feedthrough capacitor, an EMI filter, or the like to the input / output unit of the determination means 7.
[0039]
FIG. 7 is a characteristic diagram showing the output signal V of the filter 19, the output J of the comparator 21 which can be said to be the output of the determination means 7, and the applied voltage Vm for the control means 9 to give a drive signal to the drive means 8. At time t1, a voltage of + Vd is applied to the driving means 8 to move the sliding door 1 in the closing direction. When the object 10 is sandwiched between the vehicle body 2 and the slide door 1, a signal corresponding to the second derivative (acceleration) with respect to the time of displacement given to the piezoelectric sensor 5 by the piezoelectric effect from the piezoelectric sensor 5 (FIG. 7). Signal component larger than the reference potential Vo) is output. In this case, if the piezoelectric sensor 5 is simply arranged, the piezoelectric sensor 5 is slightly deformed when sandwiched (depending on the hardness of the slide door 1). 5 is disposed on the slide door 1 via an elastic body 6. Thereby, the elastic body 6 is compressed when sandwiched, and the displacement of the piezoelectric sensor 5 increases. Thus, a large displacement is obtained in the piezoelectric sensor 5, and the acceleration, which is the second derivative value of the displacement, increases, and as a result, the output signal of the piezoelectric sensor 5 also increases. As a result, it becomes easier to discriminate between the signal component at the time of pinching and the signal component due to external vibration or electrical noise.
[0040]
If the amplitude | V−Vo | from V of Vo is equal to or greater than a predetermined value Do, the determination means 7 determines that pinching has occurred, and outputs a Lo → Hi → Lo pulse signal as a determination output at time t2. When the control means 9 receives this pulse signal, it stops applying + Vd voltage to the drive means 8, applies -Vd voltage for a certain period of time, moves the sliding door 1 in the opening direction by a certain amount, and releases the pinching. Note that when releasing the pinching, the piezoelectric sensor 5 also outputs a signal (a signal component smaller than the reference potential Vo in FIG. 7) corresponding to the acceleration at which the displacement is restored.
[0041]
Whether V is larger or smaller than Vo when sandwiched is determined by the bending direction, the polarization direction, the electrode assignment (which is set as the reference potential) when the piezoelectric sensor 5 is sandwiched, and the support of the piezoelectric sensor 5 Although it changes depending on the direction, the determination means 7 determines the pinching based on the amplitude of V from Vo, so that the pinching can be determined regardless of the magnitude of V with respect to Vo.
[0042]
In this embodiment, it is determined that the object is caught when the output exceeds a predetermined value. However, when the object is soft, the output level is lowered, and instead the time constant of the output change is increased. Can be assumed. Therefore, the determination threshold value may be changed depending on the integrated value of the output or the change rate. In this case, it is possible to further prevent determination leakage and increase determination accuracy.
[0043]
In the present embodiment, when there is a pinching signal when the sliding door 1 is moving in the closing direction, the driving means 8 moves the sliding door 1 in the reverse direction. Then, since it is known that the piezoelectric sensor 5 generates a signal corresponding to the acceleration at which the displacement is restored at the moment when the sliding door 1 is moved in the opening direction (that is, when the pinching is released). Other determination methods to be used are conceivable. For example, if the amplitude | V−Vo | is equal to or greater than a predetermined value Do, the sliding door 1 is moved in the opening direction by a very small amount, and if a reverse signal corresponding to the acceleration at which the displacement is restored is generated at this time, it is really caught. The slide door 1 is further moved in the opening direction. If the sliding door 1 is moved in the opening direction by a very small amount, if no reverse signal is generated according to the acceleration at which the displacement is restored, it is determined that there is no pinching and the sliding door 1 is moved again in the closing direction. Move it. In this method, if the object is not pinched, but just touched or pulled out in an instant, it can continue to move in the closing direction, preventing false detections and excessive determination. is there.
[0044]
In addition, there is a method of ignoring the pinching determination output when the position is close to the full opening by using a position sensor that detects the position of the slide door 1. Since the object is actually caught after the slide door 1 is closed to some extent, for example, it is difficult to think that it is dangerous even if a pinching signal is output only by moving 1 cm from the fully open position. The range of the position to be determined may be determined while giving maximum consideration to safety. This method also has the effect of preventing erroneous detection and excessive determination.
[0045]
(Example 2)
A second embodiment will be described with reference to FIGS.
[0046]
The present embodiment shows a case where the pinch detection device is applied to a sunroof of an automobile. FIG. 8 is an external view of the roof of the automobile as viewed from above. FIG. 9 is a configuration diagram showing a cross section taken along line BB ′ of FIG. The sunroof has a sliding roof 22 as an opening / closing part and a roof frame 23 that forms an opening. An elastic body 24, a sheet-like piezoelectric sensor 25, a rigid body 26, and a seal portion 27 are configured at the horizontal end of the roof frame 23. The piezoelectric sensor 25 is formed in a sheet shape and a wide shape, and is disposed so as to cover the interior 3 side and the exterior 4 side when viewed from the sliding roof 22. Here, when the sliding roof 22 moves in the closing direction as indicated by an arrow 28, it is conceivable that an object is sandwiched between the sliding roof 22 and the roof frame 23. Since both the object 3 in the vehicle and the object 4 outside the vehicle are in contact with one of the parts 25a and 25b of the piezoelectric sensor 25, the contacted part is deformed together with the elastic body 24 and generates an output. Therefore, it is possible to reliably determine pinching.
[0047]
Further, the portion 25c is held between the rigid roof frame 23 and the rigid body 26, and is not displaced even if it contacts the seal portion 27 when the sliding roof 22 is normally closed.
[0048]
FIG. 10 is a configuration diagram of the sheet-like piezoelectric sensor 25 of this embodiment, and electrodes 30 and 31 are formed on both surfaces of the piezoelectric sheet 29. When high temperature durability is not required, it can be easily implemented by using PVDF (polyvinylidene fluoride film) or the like as the piezoelectric sheet 29. In FIG. 9, the piezoelectric sensor 25 of FIG. 10 is curved and pasted by bonding or the like.
[0049]
In the sheet-like piezoelectric sensor as in the present embodiment, the dimension in the width direction and the dimension in the length direction are flexible, and can be easily bent and attached to a member having a complicated shape.
[0050]
Example 3
A third embodiment will be described with reference to FIGS.
[0051]
In this embodiment, the pinch detection device is applied to a power window of an automobile. FIG. 11 is an external view of the right door as viewed from the inside of the vehicle. 12 is a configuration diagram showing a cross section taken along the line CC ′ of FIG.
[0052]
In the case of the present embodiment, it has a window glass 32 as an opening / closing part and a window frame 33 that forms an opening. Two pressure sensitive switches 34 and 35 are arranged on the upper peripheral edge of the window frame 33 as sensing means. There are a pressure-sensitive switch 34 which is a first sensing means for the inside of the vehicle and a pressure-sensitive switch 35 which is a second sensing means for the outside of the vehicle.
[0053]
Reference numeral 36 denotes determination means for determining whether an object (mainly in the vehicle interior 3) is sandwiched between the window frame 33 and the window glass 32 based on the conduction state of the pressure-sensitive switch 34, and 37 is the conduction state of the pressure-sensitive switch 35. Is a determination means for determining whether an object (mainly outside the vehicle 4) is sandwiched between the window frame 33 and the window glass 32 based on the above.
[0054]
Further, a motor 38 as a driving means for opening and closing the window glass 32 and a rotation speed sensor 39 as a load detecting means for detecting a driving load of the motor 38 are provided. The overload determination means 40 compares the detection value of the rotation speed sensor 39 with a predetermined value. When the detection value of the rotation speed sensor 39 falls below the predetermined value, the driving load exceeds the predetermined value. That is, an overload signal is output assuming that there is pinching. Therefore, pinching is determined by the output of any one of the pressure sensitive switches 34, 35 and the rotation speed sensor 39, and the pinching determination device 41 is formed with the above configuration.
[0055]
Next, the control means 42 will be described. The main circuit 43 gives a signal to the motor drive circuit 44 in order to control the motor 38, but conversely a signal as to whether or not the window glass 32 has moved in the closing direction (the motor 38 is rotating forward) from the motor drive circuit 44. It is the composition which receives. In the main circuit 43, the window glass 32 is moved in the closing direction by the motor drive circuit 44 (the motor 38 is rotated in the forward direction), and an object is caught by any of the determination means 36, 37 and the overload determination means 40. In this case, the motor 38 is rotated in the reverse direction (with the exception of the exception) to reverse the moving direction of the window glass 32 and move in the opening direction.
[0056]
An exception is when the pressure sensitive switches 34, 35 are turned on simultaneously. In the case of normal sandwiching, one of the conductors conducts first, whereas in the case of simultaneous conduction, it is judged that the window glass 32 is completely closed rather than being sandwiched, and only the window glass 32 is stopped and not reversed. It is something to control. This will be described with reference to FIG. The pressure sensitive switches 34 and 35 are held in the weather strip 45. When the window glass 32 is normally closed, the window glass 32 pushes the thin portion 46 and deforms it greatly to force the tip portions 47 and 48. As a result, the pressure-sensitive switches 34 and 35 are electrically connected at the same time. The pressure sensitive switches 34 and 35 have four electrodes 51 and 52 around the internal gaps 49 and 50, and become conductive when any two of the four electrodes come into contact with each other.
[0057]
Therefore, when the pressure sensitive switches 34 and 35 are turned on at the same time, it can be determined that they are normally closed.
[0058]
Returning to FIG. 11, the main circuit 43 is input with an operation signal from the operation switch 53 that instructs the passenger to open and close the window glass 32, and normally operates the motor drive circuit 44 in accordance with the operation signal. A battery 54 supplies power to the main circuit 43, the motor drive circuit 44, etc. (in some cases, also to the determination means 36, 37 and the overload determination means 40).
[0059]
In the present embodiment, when at least one of the determination means 36 and 37 and the overload determination means 40 determines the pinching, the window glass 2 is lowered. However, the characteristics (especially sensitivity) of the detection means used are shown. If there is a lot of noise, other methods are possible. For example, when both the sensitivity of the sensing means and the sensitivity of overload determination are too good, even if one of the determination means 36 and 37 and the overload determination means determine the pinching, it can be determined that the pinching has really occurred. Good.
[0060]
Further, if the sensing means is arranged as shown in FIG. 9 instead of FIG. 12 so that the sensing means does not output at the time of normal closing, the judging means 36 and 37 do not make the pinch judgment. Only when an overload determination is made, it may be determined that the window glass 2 is normally closed instead of being caught and the motor 38 is stopped.
[0061]
Some window frames of automobiles have a side visor. In this case, since an object may be sandwiched between the side visor and the window glass, the sensing means may be disposed also on the side visor or the sensing means may be disposed on the window glass side.
[0062]
In the above-described embodiment, the sensing means is arranged at the opening / closing part and the sensing means is arranged at the opening side. It should be selected as appropriate.
[0063]
In addition, although the said Example demonstrated the case where it applied to the sliding door of a motor vehicle, a sunroof, and a power window, for example, it may use for a power seat, and it is not restricted to a motor vehicle but to an automatic door of an elevator, a train, an airplane, and a building. You may apply to shutters, such as a garage and a store. The present invention can be applied as long as the area is distinguished by the opening / closing part.
[0064]
【The invention's effect】
As is apparent from the above embodiment, according to the invention of claim 1, the object in the inner region is slide door And the object in the outer area is slide door In any case, the sensing means generates an output and determines the presence or absence of the pinching. Therefore, there is an effect that it is possible to perform the pinching determination without missing in any pinching.
[0065]
According to the invention of claim 2, in addition to the invention of claim 1, the long-shaped sensing means is folded and disposed on the inner region side and the outer region side, so that the pinching can be reliably determined in any pinching. There is an effect that it is not necessary to increase the number of sensing means. Therefore, there is no need to increase the determination means, and there is an effect of preventing the control from becoming complicated.
[0066]
According to the invention of claim 3 of the present invention, in addition to the invention of claim 2, the sensing means is a cable-like piezoelectric sensor, so that the diameter can be made smaller than that of the pressure-sensitive switch, and folding is performed. Therefore, there is no risk of erroneous operation due to the above (in the case of a pressure sensitive switch, there is a risk of erroneous contact), so that there is an effect that it can be folded and placed with a small radius of curvature even in a narrow space. Specifically, it is necessary to bend so as to be within the thickness of the opening or the opening / closing part, but there is no problem.
[0067]
Claims of the invention 4 According to the invention, since the first sensing means for the internal region and the second sensing means for the external region are provided, an output is generated in either case. Can be easily realized.
[0068]
Claims of the invention 5 According to the invention of claim 4 In addition to the invention, the determination means is configured to determine that the first detection means and the second detection means are completely closed instead of being caught when the first detection means and the second detection means generate outputs simultaneously. It has an effect that it is possible to have a function of close determination which is difficult only by itself. Specifically, there is an effect that it is not necessary to have another means for detecting the position of the opening / closing part.
[0069]
Claims of the invention 6 According to the present invention, claims 1 to 5 In addition to any one of the inventions of slide door If the pinch detection device determines that pinch is present when the is moving in the closing direction, slide door Since the movement is stopped or the movement direction is reversed and the movement is controlled to move in the opening direction, the impact on the sandwiched object can be reduced and a safe switching device can be obtained.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a sliding door using a pinch determination device and an opening / closing device according to a first embodiment of the present invention.
[Figure 2] External view of a car equipped with the sliding door
3 is a configuration diagram showing a cross section taken along line AA ′ of FIG. 2;
4 is a configuration diagram showing a cross section taken along line AA ′ in FIG. 2;
FIG. 5 is a configuration diagram of a cable-shaped piezoelectric sensor.
FIG. 6 is a block diagram of determination means of the apparatus
FIG. 7 is a characteristic diagram of the apparatus.
FIG. 8 is a configuration diagram of a sunroof using a pinch determination device and an opening / closing device according to a second embodiment of the present invention.
FIG. 9 is a configuration diagram showing a cross section taken along line BB ′ of FIG.
FIG. 10 is a configuration diagram of a sheet-like piezoelectric sensor.
FIG. 11 is a configuration diagram of a power window using a pinch determination device and a switching device according to a third embodiment of the present invention.
12 is a configuration diagram showing a cross section taken along the line CC ′ of FIG.
FIG. 13 is a configuration diagram of a conventional sliding door.
FIG. 14 is a block diagram of the sliding door.
FIG. 15 is a block diagram of the sliding door.
FIG. 16 is a block diagram of the sliding door.
[Explanation of symbols]
1 Sliding door (opening / closing part)
2 Body (opening)
3 Inside the car (inside area)
4 Outside the car (external area)
5, 25 Piezoelectric sensor (sensing means)
7, 36, 37 determination means
8 Drive means
9, 42 Control means

Claims (6)

A vehicle body having an opening, a sliding door having a predetermined thickness in the inside and outside of the opening, opening and closing the opening, an inner region and an outer region separated by closing the sliding door , and the sliding door When the object in the inner region is sandwiched between the sliding door and the opening / closing part, the object in the outer region is disposed between the opening and the sliding door , respectively. A sandwiching judging device comprising sensing means for generating an output in any case and sandwiching judging means for judging the presence or absence of sandwiching based on the output of the sensing means.   2. The pinch detection device according to claim 1, wherein an output is generated in any case by folding the long-shaped sensing means on the inner region side and the outer region side.   3. The pinching determination device according to claim 2, wherein the sensing means is a cable-shaped piezoelectric sensor.   2. The pinch detection device according to claim 1, wherein a first sensing means for the inner area and a second sensing means for the outer area are provided to generate an output in any case.   5. The pinching determination device according to claim 4, wherein the determination unit is configured to determine that the first detection unit and the second detection unit are not closed and are completely closed when outputs are generated simultaneously. A pinch determination device according to any one of claims 1 to 5 , driving means for driving a slide door , and control means for controlling the drive means according to the determination of the pinch determination device, wherein the slide door is closed. If the pinch determination device determines that pinch is present while moving in the direction, the control unit controls the drive unit to stop the movement of the slide door or reverse the movement direction and move in the opening direction. Opening and closing device configured.

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