JPH1048071A - Caught in detector and glass-run and caught in preventing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a caught-in detector in a relatively lower manufacturing cost which is compact in fair appearance when mounted on a window frame. SOLUTION: A sensor 20 is integrally installed at the side end of a room for a glass-run 19 mounted on a window frame for an automobile. A pair of electrode plates 21, 23 constituting the sensor 20 are arranged opposing each other across an insulating elastic member 22. A number of protrusions 23a are formed on the upper face of the electrode plate 23, with the ends being shaped sharp enough to stick through the elastic member 22. When the thrust of an object caught in a window glass works on the sensor 21, both electrode plates 21, 23 are put in mutual contact via the protrusions sticking through the elastic member 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically opening and closing a shield such as a window glass, such as a power window device in an automobile, for example, a pinch detection for detecting that an object is pinched when the shield is closed. The present invention relates to a vessel, a glass run, and an anti-trapping device.

[0002]

2. Description of the Related Art In recent years, power windows have been provided in many automobiles. In this power window device, a window body such as a window glass is driven up and down by a motor by operating a switch provided on the indoor side of an automobile, and the window body is automatically opened and closed.

[0003] However, when automatically closing the window body,
When an object such as a part of a human body such as an arm or a head or an object comes out of a window, the object is sandwiched between the window body and the window frame. In order to prevent such an object from being pinched, a detector attached to the window frame is provided to detect that the object has been pinched between the window body and the window frame. 2. Description of the Related Art An anti-jamming device is known which performs a predetermined control such as immediately stopping and lowering a window body to be jammed to prevent an object from being jammed.

A detector (sensor) of this type for detecting entrapment is disclosed, for example, in JP-A-61-45518, JP-A-7-96740, JP-A-6-18022 and JP-A-2-287277. Etc.

For example, the detector disclosed in Japanese Patent Application Laid-Open No. 7-96740 has a structure shown in FIG. The sensor 81 includes a pair of conductive members 82 and 83 formed of an insulating member 84.
Are formed so as to form a hollow portion 85 in the cross section of the conductive member 82, and the conductive members 82, 83 have conductive protrusions 82 a, 8 opposed to each other with the hollow portion 85 interposed therebetween.
3a was formed. Each of the members 82 to 84 is made of a flexible elastic material such as an elastomer, and the conductive members 82 and 83 are formed by adding a conductive substance such as carbon black or metal powder. When the conductive member 82 is pushed in by the action of a pressing force from an object sandwiched between the window body and the window frame, the conductive protrusions 82a, 83
In this case, the switch is turned on upon contact of a.

The detector disclosed in Japanese Patent Application Laid-Open No. 2-287277 has the structure shown in FIG. The sensor 91 has a structure in which a pressure-sensitive element 94 is sandwiched between two electrodes 92 and 93. When a pressure is applied to the pressure-sensitive element 94 by the action of a pressing force from the sandwiched object, the pressure-sensitive element 94 is pressed. 94 changes the resistance value R. The change in the resistance value of the pressure-sensitive element 94 is detected as a voltage signal by a detection circuit, and the pinching of an object is detected based on the detected voltage signal.

[0007]

However, FIG.
In the sensor 81 shown in FIG. 7, the size of the hollow portion 85 is such that the conductive protrusions 82a and 83a come into contact only with the pressing force from the sandwiched object, and the conductive protrusions 82a and 83a do not come into contact with a smaller pressing force. Therefore, it was difficult to make the sensor 81 thin.
As described above, since the sensor 81 is relatively thick, the amount of protrusion of the sensor 81 from the window frame when attached to the window frame is relatively large. For this reason, there is a problem that the field of view from the window, which is desired to be secured as much as possible, becomes relatively narrow, and the appearance of the door also deteriorates. Further, it is difficult to maintain the hollow portion 85 in a constant shape for a long period of time, and there is also a problem that the interval between the conductive protrusions 82a and 83a changes during a long period of use, which easily causes erroneous detection. there were.

Further, when forming the conductive members 82 and 83, it is necessary to add a conductive material such as carbon black or metal powder to an elastic material such as an elastomer or a plastic. It has been difficult to uniformly disperse them without variation. For this reason, if there is a portion where the dispersion of the conductive material is not uniform, there is a possibility that a detection error such as not detecting the object even though the object is sandwiched may be caused.

In the sensor 91 shown in FIG. 15, a relatively expensive pressure-sensitive element 94 is used. Further, in order to check the change in the resistance value R of the pressure-sensitive element 94, the change in the resistance value is converted into a voltage signal, and it is determined whether or not the voltage signal has become the voltage value when the object is sandwiched. It was necessary to form a detection determination circuit. Therefore, there has been a problem that the manufacturing cost when manufactured as a sandwich detector is relatively high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a compact and not inferior appearance even when attached to a window frame or the like, and to reduce the manufacturing cost relatively. Pinch detector,
An object of the present invention is to provide a glass run and a device for preventing pinching.

[0011]

According to the first aspect of the present invention, in order to solve the above-mentioned problem, a shield provided to open and close a predetermined area sandwiches an object when moving to a closed position. A pinch detector whose detection state is switched by receiving a pressing force by an elastic body having an insulating property;
A pair of conductors opposed to each other with the elastic body interposed therebetween, and a pair of conductors arranged between the pair of conductors, so that when the elastic body is not in a compressed state, both conductors are electrically in a non-contact state; The body is compressed by the pressing force received from the object, and penetrates the elastic body by narrowing the interval between the two conductors,
And an auxiliary contact for bringing both conductors into electrical contact.

According to a second aspect of the present invention, in the pinch detector according to the first aspect, the auxiliary contact is a projection formed on at least one of the pair of conductors. According to a third aspect of the present invention, in the pinch detector according to the second aspect, the protruding portion is a projection that is sharp enough to allow its tip to pierce the elastic body.

According to a fourth aspect of the present invention, in the pinch detector according to the third aspect, the protrusion projects obliquely with respect to a spacing direction between the pair of conductors. Claim 5
According to the invention described in (4), in the pinch detector according to claim 4, the protrusion is provided in the elastic body in an inserted state,
In the elastic body, a portion where the base of the projection is inserted is hard, and a portion where the tip of the projection is inserted is soft.

According to a sixth aspect of the present invention, in the pinch detector according to the third aspect, the protrusion is formed on one of the pair of conductors, and the conductive member on the side where the protrusion is not formed is provided. The body is made of a conductive resin.

According to a seventh aspect of the present invention, in the pinch detector according to the second aspect, the protruding portion is a ridge, and the ridge contacts the conductor of a contact partner of the elastic body. A notch is formed that allows the user to do this.

According to an eighth aspect of the present invention, in the pinch detector according to the second aspect, the protrusion is in a state of being inserted into a through hole formed in the elastic body. Claim 9
In the invention described in (1), the pinch detector according to any one of (1) to (8) is integrally provided on the glass run on a side of a portion where the shield contacts.

According to a tenth aspect of the present invention, the anti-jamming device is provided so as to be movable between a closed position where the predetermined area is closed and an open position where the predetermined area is opened. 9. A driving unit for driving the shield, and a portion provided with a pressing force from an object sandwiched when the shield moves to the closed position is provided. And a control means for controlling the driving of the driving means so as to cancel the entrapment when the entrapment detector detects that the object has been entrapped.

According to the eleventh aspect of the present invention, the anti-jamming device is provided so as to be movable between a closed position for closing a window area provided in the automobile and an open position for opening the window area. A window body, and driving means for driving the window body,
The pinch detector according to any one of claims 1 to 8, which is attached to a window frame that abuts when the window body is at the closed position, and the pinch detector pinches an object. And control means for controlling driving of the driving means so as to release the object from being caught by the window body when the state is switched to the detection state by the action of the pressing force.

According to the first aspect of the present invention, when no pressing force is applied, the elastic body is not compressed and the space between the two conductors is maintained at a predetermined distance. It becomes electrically non-contact state. On the other hand, when receiving the pressing force from the object sandwiched between the shields, the elastic body is compressed, the interval between the two conductors is reduced, and the auxiliary contact disposed between the two conductors penetrates the elastic body. As a result, both conductors come into electrical contact with each other via the auxiliary contact. The elastic body can be made sufficiently thin by setting the auxiliary contact arranged between the two conductors short in the direction of the space between the two conductors, and the space between the two conductors is reduced to a structure with a hollow part. It can be set narrower than that.

According to the second aspect of the present invention, since the protrusion formed on at least one of the pair of conductors is used as an auxiliary contact, it is not necessary to separately provide the auxiliary contact as a single component. It is possible to reduce the number of parts constituting the detector.

According to the third aspect of the present invention, when the pair of conductors is disposed with the elastic body interposed therebetween, the protrusion whose tip is sharp enough to pierce the elastic body is pierced into the elastic body. Placed in When the elastic body tries to compress under the pressing force from the object sandwiched between the shields, the tip of the projection penetrates the elastic body and comes into contact with the conductor on the other side. Therefore, it is not necessary to perform a process such as a cut for bringing the protruding portion into contact with the conductor on the other side, on the elastic body.

According to the fourth aspect of the present invention, the projection penetrates the elastic body obliquely and contacts the conductor on the other side under the pressing force from the object sandwiched between the shields. At this time, the projection receives a downward pressing force from the conductor when the projection comes into contact with the other conductor, and there is a concern about deformation of the projection that changes the inclination of the projection. However, at this time, the elastic body is compressed and deformed at the lower part of the diagonally projecting projection, and the restoring force of the elastic body acts to press the projection upward from the lower surface. Therefore, even when used for a long period of time, deformation of the projection can be suppressed to a small value.

According to the fifth aspect of the present invention, the elastic body has a hard side where the base of the projection is inserted and a soft side where the tip of the projection is inserted. Therefore, the tip of the projection can easily penetrate the soft portion of the elastic body, and when the projection comes into contact with the conductor on the other side, the lower surface thereof is supported by the hard portion of the elastic body. The deformation of the projection when used over the entire area is reduced.

According to the sixth aspect of the present invention, when the elastic body is compressed and deformed by receiving a pressing force from the object sandwiched between the shields, the protrusion penetrates the elastic body and comes into contact with the conductor on the other side. However, since the conductor on the other side is made of a conductive resin, the projections penetrate into the conductive resin to conduct with the conductive resin. Therefore, the projection does not receive a pressing force that deforms even when the projection comes into contact with the conductor.

According to the seventh aspect of the present invention, when the elastic body is compressed and deformed by the pressing force from the object sandwiched between the shields, the ridge comes into contact with the conductor on the other side through the cut. . For this reason, it is possible to provide the protruding portion on a protruding line along a portion that comes into contact when the door or window body closes, and it is possible to minimize the variation in sensitivity due to the difference in the portion where the object is sandwiched.

According to the eighth aspect of the present invention, since the protruding portion is disposed so as to be inserted into the through hole formed in the elastic body, it is not necessary to make the tip of the protruding portion sharp. . Therefore, it is possible to secure a large contact area between the protrusion and the conductor on the other side.

According to the ninth aspect of the present invention, the pinch detector according to any one of the first to eighth aspects is integrated with the glass run on the side of the portion where the shield comes into contact. By attaching this glass run to a window frame or the like against which a shield such as wind glass abuts,
The same operation as the invention according to any one of claims 1 to 8 is obtained.

According to the tenth aspect of the present invention, when the pressing force from the pinched object acts on the pinch detector when the shield moves to the closed position, the two conductors are compressed and deformed by the elastic body. Electrical contact is made via the auxiliary contact, and the detection state of the pinch detector is switched. Then, the driving state of the driving means is switched and controlled by the control means, and the object is released from being caught.

According to the eleventh aspect of the present invention, when the pressing force from the object pinched when the window body of the automobile moves to the closed position acts on the pinching detector attached to the window frame, the elastic body is moved. The two conductors are electrically contacted via the auxiliary contact due to the compressive deformation of, and the detection state of the pinch detector is switched. Then, the driving state of the driving means is switched and controlled by the control means, and the object is released from being caught.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 6 shows a power window system 1 as an anti-jamming device for an automobile in the present embodiment. FIG. 1 is a view of the right side door of the automobile, partially cut away, as viewed from the indoor side. As shown in FIG. 1, a door panel 2 a constituting the door 2 accommodates an elevating device 4 for elevating and lowering a window glass 3 as a shield and a window. The lifting device 4 is configured as follows.

A lift arm bracket 5 is fixed below the window glass 3. The lift arm 6 is slidably engaged with the lift arm bracket 5 via a roller (not shown) at the distal end, and the distal end of the equalizer arm 7 is rotatably supported. The lift arm 6 and the equalizer arm 7 are arranged in a cross shape and are connected to each other so as to be rotatable about a support shaft 8. The base end of the equalizer arm 7 is slidably engaged with an equalizer arm bracket 9 fixed to the door panel 2a via a roller (not shown). A base plate 10 is arranged near the left end of the equalizer arm bracket 9 in FIG. 6 while being fixed to the door panel 2a. The lift arm 6 is supported on a base plate 10 by a support shaft 11.

A motor 12 as driving means is fixed to the base plate 10. The drive shaft of the motor 12 is operatively connected to a pinion gear 13, which meshes with a driven gear 14 fixed to the base end of the lift arm 6. The motor 12 is connected to a controller 15 as control means.
5 is driven forward and reverse.

The window glass 3 is moved up and down via a link mechanism 16 composed of both arms 6 and 7 when the motor 12 is driven to rotate forward and backward. That is, when the motor 12 is driven to rotate forward and the lift arm 6 rotates counterclockwise in FIG. 6 around the support shaft 11, the window glass 3 rises, and the motor 12 is driven to rotate in the reverse direction to rotate the lift arm 6. Is rotated clockwise in FIG. 6 about the support shaft 11, whereby the window glass 3 is lowered.

An up switch 17 and a down switch 18 provided on a switch operation panel (not shown) mounted on the indoor side of the door 2 are connected to the controller 15. The controller 15 is connected to a sensor 20 as a pinch detector integrally formed with a glass run 19 attached to the window frame 2b. The sensor 20 is a switch type sensor. This sensor 20 will be described later in detail.

When the up switch 17 is operated, the controller 15 drives the motor 12 to rotate forward, and the down switch 1
When the motor 8 is operated, the motor 12 is driven to rotate in the reverse direction. When the sensor 20 is turned on during the forward rotation of the motor 12, the motor 12 is switched from the forward rotation to the reverse rotation,
After the reverse drive is continued for a predetermined time T, the motor 12
Is set to stop driving. The predetermined time T is set to a time required for the window glass 3 to descend, for example, about 10 to 20 cm.

As shown in FIG. 5, a glass run 19 made of rubber and having a substantially U-shaped cross section is fixed to the window frame 2b at a position where the upper end of the window glass 3 comes into contact with an adhesive. The sensor 20 is provided at the indoor end of the glass run 19, that is, the concave portion 19a with which the window glass 3 contacts.
The glass run 19 is integrally formed at the front end portion extending toward the room side so as to extend over the entire region in the longitudinal direction of the glass run 19.

As shown in FIG. 4, the sensor 20 includes a support 19b integrally formed with the glass run 19, a metal electrode plate 21 as a conductor, an elastic member 22 made of an insulating material as an elastic body, and a conductor. And a metal electrode plate 23 and an elastic plate 24. The electrode plate 23 is formed by punching and bending a thin metal plate material to form an auxiliary contact and a large number of triangular projections 23a as projections. Are formed in a predetermined arrangement pattern. The thickness of the elastic member 22 is set to be greater than the height (projection length) of the projection 23a. Each member 21 to 24 has a glass run 19.
The sensor 20 is integrally formed with the glass run 19 by joining the members 19b, 21 to 24 in layers in the arrangement order shown in FIG. Installed. Each member 19b,
Bonding of 21 to 24 is performed by adhesion or welding using an adhesive. The glass run 19, the elastic member 22, and the elastic plate 24 are made of an elastic material such as a sponge-like resin such as urethane foam or rubber.

The sensor 20 has the structure shown in FIGS. As shown in the figure, a pair of electrode plates 21 and 23 are arranged to face each other with a distance corresponding to the thickness of the elastic member 22 therebetween. The protrusion 23 a protruding from the upper surface of the electrode plate 23 is in a state of piercing the elastic member 22. Since the thickness of the elastic member 22 is larger than the height (projection length) of the protrusion 23a, the protrusion 23a is separated from the electrode plate 21 by a distance L when the elastic member 22 is not compressed and deformed. Then, as shown in FIG.
When a pressing force equal to or more than a predetermined value acts on 0, the projection 23a penetrates the elastic member 22 and comes into contact with the electrode plate 21. The distance L is set so that when the object A is sandwiched between the window glass 3 and the window frame 2b, the sensor 20 is reliably turned on by the pressing force received at that time.
It is set in consideration of the elastic modulus of No. 2 and the pitch between the projections 23a.

The glass run 19 is positioned such that the object A sandwiched between the window frame 2b and the window glass 3 presses the sensor 20 against the surfaces of the electrode plates 21 and 23 in a direction substantially perpendicular to the window. It is attached to the inner peripheral surface of the frame 2b. The lead wire connected to the electrode plate 21 is connected to a battery (neither is shown) via the controller 15.
The lead wire connected to the electrode plate 23 is connected to a relay (not shown) in the controller 9.

Next, the sensor 20 constructed as described above is used.
The operation of the power window system 1 will be described. When the raising switch 17 is operated while the window glass 3 is open, the motor 12 is driven forward by the controller 15 and automatically closes to the fully closed position until the window glass 3 comes into contact with the window frame 2b. When the lowering switch 18 is operated, the controller 12 drives the motor 12 to rotate in the reverse direction, and the window glass 3 automatically lowers to the fully open position.

When the window switch 3 is automatically closed by operating the lift switch 17, for example, an object A (for example, a part of a human body (a hand, an arm, a head, or the like) or a foreign object) comes out of an open window. In this case, the object A is sandwiched between the window glass 3 and the window frame 2b. At this time, the object A is sandwiched between the window glass 3 and the glass run 19, and when the glass run 19 is pressed, the sensor 20 integrated with the glass run 19 is pressed together.

As a result, the sensor 20 is deformed by the pressing force at the portion pressed by the object A, and changes from the state of FIG.
State. That is, while the electrode plate 23 compresses and deforms the elastic member 22 by the pressing force from the object A, the electrode plate 2
The protrusion 23a that has been deformed so as to approach 1 and penetrated the elastic member 22 penetrates the elastic member 22 and contacts the electrode plate 21 as shown in FIG. When the sensor 20 is turned on in this way, this ON signal is input to the controller 15. At this time, since the contact between the two electrode plates 21 and 23 is a contact between the metals, the resistance may be smaller than the contact between the conductive resins or between the conductive resin and the metal, and the on / off sensitivity may be improved.

When the controller 15 receives the ON signal from the sensor 20, the controller 15 switches the drive of the motor 12 which has been normally rotated, to the reverse rotation. Then, the controller 15 controls the motor 1
2 is driven in reverse for a predetermined time T, and then the driving is stopped. The window glass 3 sandwiching the object A in this manner
Reverses its operation from ascending to descending, and stops in a window-open state lowered by a predetermined distance (for example, about 10 to 20 cm) from its descending start position. Therefore, the down switch 1
The object A can be easily removed without operating the object 8.

On the other hand, the sensor 20 is integrally attached to the indoor side end of the glass run 19 fixed to the window frame 2b along the longitudinal direction. Therefore, the sensor 20 is in a state of slightly extending inside the window frame 2b. However, the sensor 20 makes the pair of electrode plates 21 and 23 face each other with the elastic member 22 interposed therebetween.
Since a large number of protrusions 23a formed on the side are pierced, the gap between the electrode plates 21 and 23 is relatively narrow and the structure is thin. As a result, the sensor 20 moves to the window frame 2b.
The amount of protrusion from the door 2 is relatively short, so that the field of view of the door 2 from the window is as wide as possible.
Also looks good.

As described in detail above, according to the present embodiment,
The following effects can be obtained. (A) With a pair of electrode plates 21 and 23 pierced by a large number of protrusions 23 a formed on the electrode plate 23, the elastic member 22
The sensor 20 was configured by opposing and sandwiching.
Therefore, since the distance between the electrode plates 21 and 23 is maintained by the elastic member 22, the electrode plates 21 and 23 can be arranged at relatively small intervals, and the sensor 20 can be made compact and thin. . Therefore, the glass run 19
Sensor 2 from window frame 2b when is attached to window frame 2b
0 can be relatively shortened. Thus, a wide field of view of the door 2 from the window can be secured, and the appearance of the door 2 can be improved.

(B) Compared with the pinch detector using a pressure-sensitive element disclosed in Japanese Patent Application Laid-Open No. 2-287277,
Since an expensive element and a special circuit are not required, the manufacturing cost of the pinch detector can be relatively reduced.

(C) Since the contact between the electrode plates 21 and 23 is a metal-to-metal contact, the contact resistance at the time of electrode contact is smaller than that of the structure using a conductive resin described in the prior art. Good detection sensitivity can be obtained.

(D) When the sensor 20 is turned on, the motor 12
Is driven in reverse for a predetermined time T to stop the window glass 3 with the window glass opened by several tens of centimeters. Therefore, when the object A is sandwiched, not only the rising of the window glass 3 is stopped, but also the lowering switch 18 The object A can be easily removed from the window without having to operate again.

The present invention is not limited to the above embodiment, but may be embodied as follows without departing from the spirit of the invention. (1) A structure like the sensor 31 as a pinch detector shown in FIG. 7 may be used. On the surface of the electrode plate 32 as a conductor facing the electrode plate 21, an auxiliary contact and a ridge 32a as a protruding portion are formed. This ridge 32
a is not sharp, but the electrode plate 21
The notch 33a reaching the elastic member 33 as an elastic body
In this case, the ridges 32 a can be brought into contact with the electrode plate 21. The manufacturing method is such that the elastic member 33 is integrally formed with the electrode plate 32 embedded therein, and the elastic member 3
A cut 33a is formed in the position 3 at a position facing the ridge 32a. Then, the elastic member 33 is joined to the support portion 19b of the glass run 19 with the electrode plate 21 interposed therebetween.

According to this configuration, since the protruding ridges 32a serving as contact points with the electrode plate 21 extend continuously along the longitudinal direction of the sensor 31, the on-pressed portion when the sensor 31 is pressed is turned on. It is possible to prevent the off sensitivity from being affected. That is, a constant detection sensitivity can be obtained regardless of where the sensor 31 is pressed. Note that an electrode plate 32 formed by bending a thin metal plate to form a ridge 32a may be employed.

(2) The sensor 35 may be structured as a pinch detector shown in FIG. That is, the glass run 19 is integrally formed with the electrode plate 21 and the electrode plate 23 having the projection 23a embedded in the bulging portion 19c formed at the indoor side end of the glass run 19. According to this configuration, the number of components constituting the sensor 35 can be reduced, and the operation of assembling (joining) components can be omitted. As a result, the manufacturing cost of the sensor 35 can be kept relatively low.

(3) The sensor 36 may be configured as a pinch detector shown in FIG. That is, the inclination of the projection 23a formed on the electrode plate 23 is set to be a predetermined angle (for example, 50 to 80 °) without causing the inclination even if it becomes vertical.
In the configuration in which the projections 23a are set up vertically as in the above-described embodiment, while repeatedly hitting the electrode plate 21, the tip of the projection 23a is plastically deformed so as to be crushed, and the distance from the tip of the projection 23a to the electrode plate 21 changes. As a result, the sensitivity may be adversely affected. On the other hand, according to the sensor 36, when the sensor 36 is pressed, the force is
a works in the direction of tilting the whole obliquely, and the elastic member 22
Of the projection 23a is compressed, and the restoring force due to the compression acts as a repulsive force on the lower surface of the projection 23a to prevent the inclination of the projection 23a from tilting.
Can be effectively suppressed. As a result, good sensitivity can be maintained for a long time.

(4) A structure like a sensor 37 as a pinch detector shown in FIG. 10 may be used. That is, the auxiliary contact and the projection 23b as a protruding portion are formed obliquely to achieve the same effect as in FIG. 9, but the elastic member interposed between the electrode plates 21 and 23 is formed by elastically lowering the lower layer. It has a two-layer structure in which a hard elastic member 38 constituting a body is provided, and an upper layer is a soft elastic member 39 constituting an elastic body. According to this configuration, since the lower layer is made of a hard elastic member, it is possible to further increase the repulsive force (restoring force) for preventing the deformation of the projection 23b received from the lower surface when the sensor 37 is pressed, The deformation of the projection 23b can be more effectively suppressed. As a result, better sensitivity can be maintained for a longer period as compared with the structure of FIG.
Also, the portion where the tip of the projection 23b is inserted is a soft elastic member 39, and the tip of the projection 23b is bent so as to be substantially perpendicular to the surface of the electrode plate 21, The projections 23b can easily penetrate the elastic member 39, and the projections 23b can be more reliably brought into contact with the electrode plate 21.

(5) A structure like a sensor 40 as a pinch detector shown in FIG. That is, on the surface of the electrode plate 41 as a conductor, a large number of protrusions 4 as auxiliary contacts and protrusions are provided in a staggered arrangement pattern.
1a is formed to protrude. The insulating elastic member 42 as an elastic body interposed between the electrode plates 21 and 41 has a structure shown in FIG.
As shown in FIG. 1 (b), a large number of insertion holes 42a as through holes penetrating in the thickness direction are formed at positions opposite to the protrusions 41a. Then, as shown in FIG. 11A, the projection 41a is not inserted into the elastic member 42, but is inserted into the insertion hole 42a. According to this configuration, it is not necessary to sharpen the tip of the projection 41a sharply, so that abrasion and deformation of the projection 41a due to contact with the electrode plate 21 can be suppressed. Therefore, good sensitivity can be obtained over a long period of time. Further, by forming the tip of the protrusion 41a into a shape that can easily secure the contact area with the electrode plate 21, a large contact area between the protrusion 41a and the electrode plate 21 can be secured, and the contact resistance can be further reduced. it can. Further, the sensor 40
Since the projection 41a is not pierced into the elastic member 42 during assembly of the projection 41, even if a load (force) is erroneously applied in a direction other than the projection direction of the projection 41a during assembly, the projection 41
There is not much to worry about deforming a. Note that this configuration does not change the thickness of the sensor 40.

(6) A structure like a sensor 45 as a pinch detector shown in FIG. 12 may be used. That is, the partner electrode with which the protrusion 23a contacts is a conductive rubber and a conductive rubber as a conductive resin. According to this configuration, when the sensor 45 is turned on, the projection 23a only stabs the conductive rubber 46, so that it is not necessary to receive a stress large enough to deform the tip and wear is also prevented.
Therefore, the deformation of the projection 23a is suppressed even when used for a long period of time, so that good sensitivity can be obtained for a long period of time.

(7) As shown in FIG. 13, a structure such as an auxiliary contact and a projection 23c as a projection may be employed, the tip of which is formed to form a three-dimensional curved surface. According to this configuration, it is possible to improve the strength of the tip of the projection 23c that is easily crushed by a load. Therefore, good sensitivity can be obtained over a long period of time.

(8) The contact medium is not limited to being formed integrally with any one of the electrode bodies. For example, when a metal rod is embedded in an elastic body interposed between the electrode bodies without being in contact with any of the two electrode bodies, and when the elastic body is compressed and deformed by a pressing force received from a sandwiched object, the metal rods It may be configured to be in contact with the electrode body. This configuration also allows the sensor (the pinch detector to have a thin structure).

(9) A projection or the like may be formed on the electrode plate 21 on the side closer to the window frame 2b. Further, the projections may be formed on both of the pair of electrode plates. (10) A structure in which needle-like parts having needles at both ends are embedded at a predetermined depth of the elastic body, and the elastic body is compressed and deformed, so that both ends of the needle-like part come into contact with a pair of conductors and are pinched. It is also possible to adopt a structure in which the detector enters a detection state.

(11) It is also possible to adopt a configuration in which the pinch detector is separate from the glass run, and the pinch detector is attached to the window frame separately from the glass run. (12) The anti-jamming device to which the present invention is applied is not limited to application to a power window device for a door. The present invention can also be applied to a sunroof window opening / closing device provided in an automobile. Further, the present invention may be applied to an automatic door of a car such as a bus or a taxi. In this case, a pinch detector may be attached to the automatic door side to detect that the occupant hits the door, and upon detection, the door may be opened.

(13) The anti-jamming device of the present invention may be applied to fields other than automobiles. For example, buildings such as buildings,
The present invention can be applied to any automatic opening / closing device having a door or window that is automatically opened / closed, such as a vehicle such as a train, a transport device such as an elevator, and the like. The place where the sandwiching detector is attached may be on the side of a shield such as a door or a window, or may be on the side of a frame member such as a window frame where the shield abuts at the closed position.

The invention which has been grasped from the above embodiment and which is not described in the claims will be described below together with its effects. (A) The automobile is provided with the anti-jamming device according to claim 11. According to this vehicle, the same effect as the eleventh aspect can be obtained.

(B) In the invention according to claim 11,
The said pinch detector is attached to the said window frame as the glass run of Claim 9. According to this configuration, since the entrapment detector is provided on the glass run, the entrapment of the object can be effectively detected.

(C) In claim 9 or (b),
The pair of conductors are integrally formed in a state where the pair of conductors are embedded at predetermined positions of the glass run made of an elastic material at predetermined intervals. According to this configuration, the pair of conductors are integrally molded in a buried state when the glass run is molded, so that the production thereof can be simplified. Therefore, the manufacturing cost of the glass run provided with the pinch detector can be reduced.

(D) In any one of the fourth to sixth aspects of the present invention, the tip of the projection is formed as a three-dimensional curved surface. According to this configuration, the strength of the tip of the projection is improved by being formed on a three-dimensional curved surface, so that the tip of the projection is less likely to be deformed, and good sensitivity can be obtained over a long period of time.

(E) In the tenth or eleventh aspect, the control device is configured to control the driving means to switch the shield or the window from a closing operation to an opening operation when the entrapment detector is in a detection state. The driving state is set to be switched. According to this configuration, when the object is sandwiched between the shield and the window, the shield or the window opens, so that the operation of opening the shield (or the window) does not need to be performed.
The sandwiched object can be easily removed.

[0066]

As described above in detail, according to the first aspect of the present invention, an auxiliary contact is provided between a pair of conductors which are arranged opposite to each other with an insulating elastic body interposed therebetween to sandwich an object. When the elastic body is compressed due to the pressing force at the time and the distance between both conductors becomes narrow, the structure is such that both conductors are in electrical contact via auxiliary contacts, so the elastic body is set thin. By reducing the distance between the conductors, a thin sandwich detector can be provided. Therefore, even if the pinch detector is attached, the appearance can be improved, and the production cost can be suppressed relatively low because of the contact type.

According to the second aspect of the present invention, since the auxiliary contact is a protrusion formed on at least one of the pair of conductors, the auxiliary contact does not need to be a single component.
The number of components of the pinch detector can be reduced.

According to the third aspect of the present invention, the projecting portion is formed as a projection whose tip is sharp enough to pierce the elastic body.
When receiving the pressing force from the object sandwiched between the shields, the protrusion penetrates the elastic body and comes into contact with the conductor on the other side. There is no need to process the elastic body.

According to the fourth aspect of the invention, the projection is projected obliquely with respect to the interval direction between the pair of conductors, and opposes the downward pressing force received when the projection comes into contact with the other conductor. Is applied to the projection as a restoring force of the elastic body that has been compressed and deformed on the lower surface side, so that the plastic deformation of the projection is suppressed to a small level and good sensitivity is maintained for a long period of time. be able to.

According to the fifth aspect of the present invention, the elastic body is made hard at the portion where the base of the projection is inserted and soft at the portion where the tip of the projection is inserted. The projection can reliably contact the conductor by passing through the elastic body, and when the projection contacts the conductor on the other side, it is supported by the hard part of the elastic body and deformed. Is suppressed, so that good sensitivity can be maintained for a long period of time.

According to the sixth aspect of the present invention, since the conductive material on the other side with which the protrusion contacts is made of a flexible conductive resin, the contact pressure received from the conductive material with which the protrusion contacts can be reduced. Abrasion and deformation of the projection can be suppressed as small as possible, and good sensitivity can be maintained for a long period of time.

According to the seventh aspect of the present invention, notches are formed in the elastic body so as to be able to come into contact with the conductor of the contact partner even when the projecting portion is a ridge, so that the shield such as a door or a window body is formed. Can be arranged as an auxiliary contact that extends continuously along a portion that abuts at the closed position, so that a variation in sensitivity due to a different pinched portion of an object can be minimized. According to the invention as set forth in claim 8, the projecting portion is configured to be inserted into the through hole formed in the elastic body so that the tip does not have to be sharp, so that the tip shape of the projecting portion is appropriately set. By doing so, it is possible to increase the contact area between the protrusion and the conductor.

According to the ninth aspect of the present invention, the first aspect is provided.
The trapping detector according to any one of claims 8 to 8,
Since the shield is formed integrally with the side portion of the abutting portion where the shield abuts at the closed position to form a glass run, by attaching this glass run to a window frame or the like to which the shield such as a window glass abuts, The same effect as the invention described in any one of claims 1 to 8 can be obtained.

According to the tenth aspect of the present invention, when the object is pinched when the shield moves to the closed position and the detection state of the pinch detector is switched, the pinching of the object is released. In the anti-jamming device for switching control of the driving state, the entrapment detector according to any one of claims 1 to 8 is used as the entrapment detector. The same effects as those of the invention described in the section can be obtained.

According to the eleventh aspect of the present invention, when the detection state of the sandwiching detector attached to the window frame is switched when the window body provided in the automobile is moved to the closed position and the object is sandwiched, In the anti-jamming device, which controls switching of the driving state of the window body so as to cancel the jamming of the object, because the jaw detector according to any one of claims 1 to 8 is used as the jaw detector, The same effect as the invention described in any one of claims 1 to 8 can be obtained.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a sensor according to an embodiment.

FIG. 2 is a partial sectional side view of a sensor.

FIG. 3 is a partial sectional side view showing the sensor in a pressed state.

FIG. 4 is an exploded perspective view of the sensor.

FIG. 5 is a partial front sectional view of a door.

FIG. 6 is a schematic configuration diagram of a power window system.

FIG. 7 is a front sectional view of another example of the sensor.

FIG. 8 is a front sectional view of another example of the sensor different from FIG. 7;

FIG. 9 is a partial side sectional view of another example of a sensor different from FIG. 8;

FIG. 10 is a partial sectional side view of another example of a sensor different from FIG. 9;

11A is a partial side sectional view of another example of a sensor different from FIG. 10, and FIG. 11B is a perspective view of an elastic member.

FIG. 12 is a partial sectional side view of another example of the sensor different from FIG. 11;

FIG. 13 is a perspective view of another projection.

FIG. 14 is a front sectional view of a sensor according to the related art.

FIG. 15 is a partial perspective view of a sensor different from FIG. 14;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Power window system as a pinch prevention device, 2b ... Window frame, 3 ... Window glass as a shield and a window, 12 ... Motor as drive means, 15 ... Controller as control means, 19 ... Glass run, 20 , 3
1, 35, 36, 37, 40, 45 ... sensors as pinching detectors, 21 ... electrode plates as conductors, 22 ... elastic members as elastic bodies, 23 ... electrode plates as conductors,
Reference numerals 23a, 23b, 23c: projections as auxiliary contacts and projections; 32, electrode plates as conductors; 32a, projections as auxiliary contacts and projections; 33, elastic members as elastic bodies; 38, an elastic member constituting an elastic body, 39, an elastic member constituting an elastic body, 41, an electrode plate as a conductor, 41a, a projection as an auxiliary contactor and a projection, 42, an elasticity as an elastic body Reference numeral 42a: insertion hole as a through hole; 46, conductive rubber as a conductor and a conductive resin;

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location H01H 13/16 4235-5G H01H 13/52 D 13/52 B60J 1/16 A

Claims (11)

[Claims] 1. A pinch detector in which a shield provided so as to be able to open and close a predetermined area receives a pressing force caused by pinching an object when the shield moves to a closed position, and switches a detection state of the pinch detector. An elastic body having a property, a pair of conductors disposed to face each other with the elastic body interposed therebetween, and disposed between the pair of conductors to electrically connect both conductors when the elastic body is not in a compressed state. In a non-contact state, the elastic body is compressed by the pressing force received from the object to reduce the distance between the two conductors, thereby penetrating the elastic body, and bringing both conductors into an electrically contacting state. An entrapment detector including an auxiliary contact. 2. The pinch detector according to claim 1, wherein the auxiliary contact is a protrusion formed on at least one of the pair of conductors. 3. The pinch detector according to claim 2, wherein the protrusion is a protrusion whose tip is sharp enough to pierce the elastic body. 4. The pinch detector according to claim 3, wherein the protrusion projects obliquely with respect to a spacing direction between the pair of conductors. 5. The projection is provided so as to be inserted into the elastic body, and the elastic body has a hard portion where a base portion of the projection is inserted and a soft portion where a tip portion of the projection is inserted. The pinch detector according to claim 4, wherein 6. The pinch detector according to claim 3, wherein the protrusion is formed on one of the pair of conductors, and the conductor on which the protrusion is not formed is made of a conductive resin. 7. The pinch according to claim 2, wherein the projecting portion is a ridge, and the elastic body is formed with a cut that allows the ridge to come into contact with a conductor of a contact partner. Detector. 8. The pinch detector according to claim 2, wherein the protrusion is in a state of being inserted into a through hole formed in the elastic body. 9. A glass run in which the pinch detector according to any one of claims 1 to 8 is integrally provided on a side of a portion where the shield contacts. 10. A shield movably provided between a closed position where a predetermined area is closed and an open position where a predetermined area is opened, a driving unit for driving the shield, The pinch detector according to any one of claims 1 to 8, wherein the pinch detector is provided at a position where a pressing force from an object pinched when the shield moves to the closed position acts. And a control means for controlling the driving means to release the entrapment when the entrapment of the object is detected by the container. 11. A window body movably provided between a closed position for closing a window area provided on an automobile and an open position for opening a window area, and a driving means for driving the window body. The pinch detector according to any one of claims 1 to 8, which is attached to a window frame that abuts when the window body is at the closed position, and the pinch detector pinches an object. And a control means for controlling the driving means so as to release the object from being caught by the window when the state is switched to the detection state by the action of the pressing force.