KR19990072871A - An improved anti-pinching system based on modification of the light conductivity of an optical fibre for automatic car windows - Google Patents

Abstract

The jam prevention device for a window of a vehicle according to the present invention can directly detect an obstacle by a light sensor disposed along the entire length of the window frame. The operation of the light sensor is based on arranging optical fiber conductors around the entire periphery of the frame.

When the rising window in the frame of the door encounters obstacles by appropriate means, pressure is applied to the coating and the sensor to reduce the amount of light that is transmitted through the sensor. This reduction is analyzed by a general suitable electronic system. Through this comparison, the change is interpreted as being caused by an obstacle encountered while the window is raised, and then the motor acting to raise the window is given a stop command, and then the motor is reversed to lower the window.

The optical fiber conductor acts as a sensor and may be directly combined with a special covering or frame coating, and in some cases may reduce the assembly cost of the coating by incorporating what belongs to the insulation means into what belongs to the sensor means. have.

Description

AN IMPROVED ANTI-PINCHING SYSTEM BASED ON MODIFICATION OF THE LIGHT CONDUCTIVITY OF AN OPTICAL FIBRE FOR AUTOMATIC CAR WINDOWS}

The present invention relates to a novel anti-jamming device using light conducting means to detect obstacles between the perimeter of a car window and the frame of the car door and the frame of the window.

There are a number of devices on the market, so they may be considered as prior art to detect obstacles when the window is lifted in the frame in response to the pressure the user places on the window control button.

The devices, which can be considered as prior art, can be largely divided into groups of direct devices and indirect devices. The direct device consists of a sensor that stops the motor and reverses its operation by sending a signal appropriate to the electric motor that activates the various components involved in elevating the window by directly detecting obstacles by sensitivity. The window will lower.

Indirect devices typically act on the motor and analyze its operation, analyzing the operation of the motor that is supposed to cause a change in the current circulating through the motor or a change in the rotational speed of the motor when the window encounters an obstacle. This change is detected by a suitable sensor coupled to the electric motor. In other words, the indirect device detects the presence of an obstacle between the window and its frame through this change in current or speed to stop the motor and reverse its direction of rotation.

While the aforementioned devices show significant advances over earlier devices that did not have the anti-jamming and obstruction detection system, they still present serious limitations. This is because the devices often fail and in some cases determine the change in the environment in which the window is moving as an obstacle. In many cases, for example, hardening of guideways or rubber seals located on the door frame increases the resistance to bumps as the window rises from the frame, which the sensor considers to be an unexpected obstacle and stops the motor. By reversing the direction of rotation, the user is brought back to the seller to solve this problem by reprogramming the various devices to avoid the above drawbacks.

In another technical aspect, the devices are in many cases unable to detect lateral jamming, ie between the top or edge of the window and the frame as well as between the side edge of the window and the side frame of the window, This can happen on the rear window of many car models and can cause serious injury to a person, but the devices described above cannot detect it because of its limitations. This situation is explained fully in publications and periodicals related to the industry.

The magnitude of the above situation has caused even European Union authorities to issue suitable criteria to ensure that the force to raise the car window does not exceed the critical value. If this is not the case, serious injury may occur to the fingers, arms, neck or other parts of the window, which can easily be pinched between the top or side edges and the top or side edges of the door frame or structure covering the door frame. Because.

The pinch preventing device for a window of a vehicle according to the present invention is to overcome the above disadvantage in that the obstacle can be directly detected by a light sensor disposed along the entire length of the window frame. The operation of the light sensor is based on arranging optical fiber conductors around the entire periphery of the frame.

The optical fiber conductor acts as a sensor and may be combined directly with a special covering or frame covering and in some cases reduces the assembly cost of the covering by incorporating what belongs to the insulation means into what belongs to the sensor means. It may be.

Testing conducted using this new anti-jamming device shows that, when appropriate means, when a window rising from the frame of the door encounters an obstacle, the pressure is applied to the coating and the proposed sensor so that the sensor passes through it. Will be reduced. This reduction is analyzed by a general suitable electronic system. In this comparison, the change is caused by an obstacle encountered while the window is raised, and then the motor acting to raise the window is given a stop command, and then the motor is reversed to lower the window.

The proposed device is very simple, inexpensive and easy to manufacture by using commercially available elements that do not require new design. This is because the device can be bonded to a special coating or to the coating surface or door frame structure of the door frame if necessary.

Implementation of the device in connection with Spanish Patent No. 9800393 and laboratory experiments conducted with the device have shown that higher sensitivity values can be obtained for optical fiber conductors. In other words, by arranging the optical fiber conductors in a loop form, the device for obstacles has been greatly improved. To this end, the device must be redesigned to include a rubber profile that allows the optical fiber to be arranged in a ring and a new sensor device that does not have to be stored before the device can operate.

The proposed rubber profile, which is located inside the window frame and installed inside the seal located on the window frame, includes a series of cutouts that allow the optical fibers to be arranged in a wave shape, in which the optical fibers are projected. In this way, the deformation increases the magnitude of the angle of refraction and increases the sensitivity of the device when the fiber detects the obstruction, causing the upper edge of the window to deform the loop.

The arrangement of the formed cutouts and loop-shaped optical fiber conductors formed in the profile for the passage of the optical fiber conductors, once installed inside by a suitable means, will continue to cover the areas covered by the adhesive or welded and protected by the sealing profile. Can be. All of these enable fully automated production.

The profile described above is contained within a seal located at the top of the door and covering the entire window frame.

In addition to the unusual design of the optical fiber described above, another object of the present invention is to provide a reference value of 30 milliseconds before the obstacle detection device raises the window, that is, at the moment when the user presses a button to close the open window. The obstacle detection device is modified to change the value. The improved device then sends a signal to check the fiber conduction readings without any type of obstruction and before the window goes up.

As the window rises and encounters an obstacle, the obstacle is pressurized by upward upward force against the frame seal and profile that changes the light conduction value in the device proposed in this patent. The sensor then detects the presence of obstacles from the deformations and reductions of the previous illustration to stop the motor and reverse its direction of rotation. Thus, the window is lowered and obstacles are released from the upper edges of the window and the window frame.

Modification of the reference value detection device by providing a momentary value that has not been previously stored allows the improved anti-jamming device of the present invention to be independent of and unaffected by voltage changes that may occur in the car. That is, if the electrical circuit is cut off, the battery is worn out, or if the car is running out of power for any other reason, you need to restore the reference value and reprogram the anti-jamming device to operate the device, as in the anti-jamming device of the prior art. There is no.

As a result, in the prior art apparatus, if the reference value is different according to the car model, it is because the difference in the motor, the length of the window, the weight, the length of the seal, and the amount of friction varies according to the car model. The improved anti-jamming device can be used for all types of cars and doors regardless of the structure, shape length of the car and door, and any other changes involved by changing the car model.

Due to the arrangement in the form of a loop and an incision formed in the profile for passing the optical fiber conductor, once the conductor is positioned inside by suitable means, the incision is covered with adhesive so that the area covered by the profile is still covered or Are welded. All of this allows for fully automated manufacturing.

The improved device according to the invention will be used to prevent jamming in doors, engine bonnets and boot as well as in sunroofs.

Other details and features of the invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings. This detailed description is given as one possible embodiment and is not limited by the description set forth below. Accordingly, the detailed description is to be regarded as illustrative in nature and not as restrictive.

1 is a front schematic view from the inside of an automobile door 10 in which conventional components for elevating a window are arranged;

2 is a partial front cross-sectional view of the frame 12 of the door 10 in which the device proposed by the present invention is installed.

3 is a front view of a sensor 25 formed of a profile 26 and an optical fiber conductor 31 to form a series of loops 34.

4 is a plan view of a profile 26 arranged in accordance with the present invention.

[Description of Code for Major Parts of Drawing]

10 door, 11 inner side, 12 frame,

13 frame covering, 14 sensor, 15 sensor covering,

16: electric motor, 17 power supply, 18 optical fiber conductor,

19: relay, 20: meter, 21: window,

22: cable, 23: guideway,

24: support, 25: sensor, 26: profile,

27: incision, 28: entrance, 29: passage, 30: cavity, 31: optical fiber, 32: end, 33: end, 34: loops

In one embodiment, which can be considered as prior art, as shown in FIG. 1, the door 10 takes the form of a thin plate made of which a suitable frame 12 is provided thereon. As shown in FIG. 2, the frame 12 is covered with its inner surface with a coating 13 which can be attached to the conventional window when the conventional window is raised. Thus, a complete seal is made between the outside and inside of the car when pressure is applied to the top of the coating.

1 also shows an electric motor and window 21 which are conventionally powered by a power source 17 (not shown) via various components used for raising the window 21, for example via a cable 22. The guideway 23 is shown to allow the vertical movement of the support 24 located below. The aforementioned components together with other elements of electrical nature, such as the relay 19 and the meter 20, provide a device for sensing and dynamic operation of the window 21 in the frame 12 of the door 10. Achieve.

In one preferred embodiment of the device according to the invention, the coating 13 of the frame 12 is combined with another coating 15 having a sensor 14 coupled therein.

The sensor 14 takes the form of an optical fiber conductor 18 (not shown) in which the frame 12 extends over or over its length.

The operation of the device according to the invention is as follows. : When the window is lifted by the above-mentioned elements without any problem, a large amount of light, determined according to the characteristics of the device and the special characteristics of the optical fiber conductor, passes through the conductor 18 and the electronic device (not shown). Continued detection by

If the window encounters some type of obstacle at its upper or side edge and the obstacle is pressurized by the vertical synergism of the window 21 against the coating 13 of the frame 12, the coating of the sensor 14 The pressure delivered to the conductor 19 limits and reduces the conduction and the amount of light measured and sensed by a suitable means such as a relay. These are programmed to perform periodic inspections that interpret any change in light conduction as the presence of an obstacle.

Similarly, slight changes in light conduction at the conductors 18 by such suitable programming means are not affected by changes in the environmental conditions, ie the repair of the car door 10 or by the external device of the covering 13 or It can be recognized that some damage has been done to (15).

Embodiments in which the optical fiber conductor 18 does not span the entire length of the frame 12 but only part of the frame may be considered the same and are more suitable for the characteristics and shape of the frame and the car door 10.

In Fig. 2 of Spanish Patent No. 9800393 there is shown an embodiment of the proposed device, wherein the coating of the door frame is combined with another coating in which the sensors are arranged therein, wherein the sensors are all arranged longitudinally. It takes the form and the length of the conductor covers the whole and part of the window frame.

The arrangement of Spanish Patent No. 9800393 has been improved by the subject of the present application of modifying the coating to include a substantially prism shaped profile 26, wherein the coating exhibits a regularly spaced incision 27. .

As shown in FIG. 4, each incision allows the fiber conductor to be pushed in by some known means to slide through the passage 29 until the fiber conductor 31 is located in the cavity 30. (28). Thus, as shown in FIG. 3, a loop 34 is formed and a complete circuit, in which the ends 32, 33 of the conductor 31 are incorporated into the light conductivity measuring device (apparatus according to the invention) by suitable means. ) Can be connected.

Once the optical fiber conductor 31 is located in the cavity 30 through the inlet 28 of the passage 29, any known device places the adhesive or performs welding. Thus, the optical fiber conductor 31 cannot move in the form shown in FIG.

Another aim of the present invention is that the jamming device eliminates the need for permanently stored reference values prior to operation of the device. That is, the pinch prevention device operates between the reference value measured before raising the window and the changed value obtained when the reference value is changed due to an object being caught between the upper edge of the window and the window frame.

3, the optical fiber conductor 31 is arranged in a loop 34 inside the profile 26 so that the optical fiber conductor of Spanish Patent No. 9800393 is arranged between the upper edge of the door frame and the upper window than when the optical fiber conductor is arranged along the frame. It's easier to detect the pressure that an object can create.

Once the optical fiber conductor 31 is positioned inside the profile 26, the profile and the cutout 37 are coated or welded with adhesive and then inserted into the inner coating of the frame by suitable means.

DETAILED DESCRIPTION OF THE INVENTION The present invention has been described fully with reference to the accompanying drawings, and it will be appreciated that further modifications deemed to be beneficial may be made without changing the substance of the patents summarized in the following claims.

Claims (7)

A type that directly acts to reverse the rotation of the electric motor 16 connected to the power source, which is necessary for elevating the window 21 by a cable 22 that assists the guideway 23 under the window 21. In the "improved jamming device for automotive windows based on the change in the light conductivity of the optical fiber", which acts as a force generating element, the device is mounted over the entire periphery of the frame 12 of the door 10. Apparatus characterized in that it takes the form of a sensor (14) arranged inside the replica (15). 2. Device according to claim 1, characterized in that the sensor (14) consists of a fiber optic conductor (18). Device according to claim 1, characterized in that the optical fiber conductor (18) can be integrated into the coating (15) or directly into the coating (13) independently of the coating (13) of the frame (12). . 2. Device according to claim 1, characterized in that the optical fiber conductors (18) can be arranged continuously over the entire length around the frame (12) or over a portion thereof. 2. The device according to claim 1, wherein in the device of the type formed of a seal or door frame covering which joins the coating in which the sensor of the optical fiber conductor is arranged longitudinally, the optical fiber conductor 31 is characterized in that the profile 26 The device characterized in that it is arranged within a substantially prism shaped profile, forming a loop 34 at the point where the conductor 31 enters and exits at a series of incisions 27 formed at regular intervals in the lateral region of the . 6. The incision 27 of the profile includes an inlet 28 for inserting the conductor 31 through a passage 29 ending in the cavity 30, in which the conductor 31 is a suitable adhesive. Device using or maintained through conventional welding operations. The device according to claim 1, wherein the device detects light conduction values (about 20 to 30 milliseconds) of the optical fiber (31) arranged in the profile (26) before raising the window in the window frame.