This is a national stage application of PCT/CN2008/001571, filed on Sep. 3, 2008, which claims priority of PCT/CN2007/002648, filed on Sep. 4, 2007. The disclosures of these prior filed applications are incorporated herein by reference in their entirety.
This invention relates to cloth materials that can be used to form electronic components, especially materials that contain crevices (slits), wherein conductive areas are formed on both sides of a crevice.
This application is based on PCT application No. PCT/CN2007/002648, filed on Sep. 4, 2007, and claims the priority of this prior filed PCT application. This prior filed PCT application is incorporated by reference in its entirety.
Currently, there are many technologies incorporating conductive materials into cloth or leather materials to create electrical circuits or to make electronic components. Included are technologies that incorporate conductive materials into cloth materials to create electric switches, for example, the bendable switch apparatus, as disclosed in U.S. Pat. No. 7,145,432, makes use of a textile material arranged in triple layers to form an electric switch. Another example, as disclosed in U.S. Pat. No. 6,642,467 (China Patent No. CN 1252762), is an electric switch that utilizes an upper and a lower layer of a conductive material sandwiching an elastic material. This device can be a pressure or strain sensor, but a pressure-sensitive component has to be added therein. Based on the amount of pressure applied, this pressure-sensitive component will produce a change in electrical characteristic. The layered textile materials for use in the afore-mentioned electric switches are common and numerous. However, these often involve multiple components, making the manufacturing process somewhat complicated.
Furthermore, U.S. Pat. No. 6,596,955 discloses fixing a conductive material into a zipper. This approach limits its use to clothing articles that use a zipper. Also, it can't be repaired by the user himself. Another example disclosed in China Patent No. CN1666308, is an electrical switch made of an upper and lower parts. However, because it can't be incorporated into a cloth material, the manufacturing process is somewhat complicated.
Also, some use such materials in a signal or electric current transmitting device, as disclosed in U.S. Pat. No. 7,154,071. But again, as in the above examples, it has disadvantages of requiring a complicated manufacturing process. U.S. Pat. Nos. 4,237,886 and 6,970,731 disclose a snap-on button that easily detaches with prolonged use. U.S. Pat. No. 6,210,771 discloses a 2-part structure that can be used in a switch array. However, such an array not only easily produce a false signal, but its function is also easily affected by wet cloth caused by sweat or rain, or may give the user electric shocks. Besides, this invention can only measure pressure, but not strain.
As disclosed in U.S. Pat. No. 7,210,939, a button-hole interconnect that is used as a conductor includes an opening and the button interconnect device. These two has to be operated manually by the user to be able to connect to the power source or an electronic equipment, and once electrically connected, it cannot be disconnected. Therefore, in terms of environmental protection and energy-savings, it is not ideal because it cannot automatically change its state of being conductive or non-conductive based on changes in an outside force, and it also can't distinguish different extent of conductivity once it is connected.
From these examples, we can see that presently available cloth materials that can form electronic components are inconvenient to use and disadvantageous with regard to structure and practical use. Therefore, there is a need for further improvement. To solve the above-mentioned problems, manufacturers have devoted a lot of energy to find a solution. However, for a long time, a suitable design has not been developed, and the ordinary products do not posses the appropriate designs that can solve the above problems. This is clearly an urgent problem. Therefore, how to design a new structural type of cloth materials that can be used to form electronic components is an important research topic at present, and improvement in this area is also a goal of the industry.
In view of the disadvantages of the presently available types of cloth materials for making electronic components, the present inventor, based on his practical experience and professional knowledge from years of devotion to the design and manufacturing of these types of products, coupled with theoretical applications and vigorous research and innovation, set out to design and develop a new type of cloth materials that can be used to form electronic components to improve on the presently available types of cloth materials so that such materials will have more practical uses. After continuous research, design, trials, and improvement of prototypes, the inventor has finally come up with this invention with true practical values.
An objective of this invention is to overcome the disadvantages of presently available cloth material that can form an electronic component and provide a new type of cloth materials that can be used to form electronic components. The technical problem to overcome is how to incorporate a conductive area into a single piece of cloth material to simplify the manufacturing process.
Another objective of this invention is to provide a new type of cloth materials that can be used to form electronic components, in which the technical problem to overcome is to design a mechanism that allows power to be automatically cut off when a product of the invention gets wet.
Another objective of this invention is to provide a new type of cloth materials that can be used to form electronic components, in which the technical problem to overcome is to design a mechanism that allows products of this invention to be used as strain gauges or pressure gauges.
Another objective of this invention is to provide a new type of cloth materials that can be used to form electronic components, in which the technical problem to overcome is to design a mechanism that allows products of this invention to be used as electrodes.
Objectives of the invention and methods for overcoming the technical problems are achieved by the following technical means. Embodiments of the invention provide a new type of cloth materials that can be used to form electronic components. A cloth material of the invention includes: one cloth material layer that is elastic; the cloth material layer includes at least one crevice (or slit) and a conductive area in the cloth material layer; the shapes of the crevice and the conductive area can change with an outside force applied on the cloth material layer.
Objectives of the invention and methods for overcoming the technical problems may also be achieved by utilizing the following technical means:
In an above-mentioned cloth material that can be used to form an electronic component, the conductive area includes at least one first conductive region; the at least one first conductive region extends from one side of the crevice to the other side.
In an above-mentioned cloth material that can be used to form an electronic component, the conductive area includes at least one first conductive region and at least one second conductive region, which are separately located on both sides of the crevice.
An above-mentioned cloth material that can be used to form an electronic component may also include a control circuit that is electrically connected to the conductive area.
An above-mentioned cloth material that can be used to form an electronic component may also include an output device that is electrically connected to the control circuit.
An above-mentioned cloth material that can be used to form an electronic component may also include a conductive reference area on the cloth material layer and electrically connected to the control circuit.
This invention, as compared with presently-available technology, has clear advantages and beneficial effects. From the above description, to achieve the above-mentioned objectives, the present invention provides a type of cloth materials that can be used to form electronic components. A cloth material of the invention may include a cloth material layer, a first conductive area, and two conductive wires. The cloth material layer contains one crevice. The first conductive area may be formed in the cloth material layer, and may extend from one side of the crevice to the other side. Alternatively, both sides of the crevice each may include one conductive area. Here, the signals produced may be digital signals. The noise included in the signals may be processed with a Schmitt trigger.
Based on the Above-Mentioned, Cloth Materials that can be Used to Form Electronic Components May have the Following Advantages and Beneficial Effects:
Summarizing the above, this invention provides many advantages and practical values. In terms of structure and functionality, it has significant improvement. In terms of technology, it presents a clear advancement and provides convenience and practicality. When compared with present-day types of cloth materials that can be used to form an electronic component, cloth materials of the invention show further breakthrough, rendering more practical to use. Thus, the present invention represents a novel, advanced and practical new design.
The above description is only an overview of the technical means of embodiments of the invention. In order to provide a better understanding of the technological means and to help users practice this invention, and to make the objectives and advantages of the present invention easier to understand, preferred embodiments, with accompanying drawings, are described in more detail in the following:
In order to further explain this invention to attain the goals of the technological means and effectiveness, the following description uses drawings coupled with preferred examples to illustrate specific modes of application, structure, special features and effectiveness of cloth materials that can be used to form electronic components, in accordance with embodiments of the invention:
With regard to the above explanation of this invention and other technological contents, special features and effectiveness, it will become clear from the following description using drawings and preferred embodiments. Through specific modes of application, one can further understand this invention in order to achieve the goals with the technological means and effectiveness. However, the drawings provided are for reference and illustration only, and are not meant to limit the scope of this invention.
Referring to
The above-mentioned cloth material layer 12 may be a piece of woven cloth that includes elastic fibers and contains a crevice 1121. The cloth material layer 12 can include other elastic material, such as rubber, foam-based material, spongy material, spring-liked material, cotton, spandex, lycra, synthetic rubber (SBR, Styrene Butadiene Rubber) and sponge-based material in the manufacturing process in order to increase its elasticity.
The above-mentioned conductive area includes a first conductive region 14, which may be formed on the cloth material layer 12 and extends from one side of the crevice 1121 to the other side. The first conductive region 14 may form around the rim of the crevice 1121 of the cloth material layer 12. The first conductive region 14 can be formed in the following manners (but not limited to it):
The above-mentioned non-conductive textile fibers may be, but not limited to, cotton, hemp or nylon, while the conductive fibers may be polymer conductive fibers or conductive metallic fibers, or weaving a stainless steel fiber and a non-conductive fiber together, or applying a conductive substance over a non-conductive fiber. The percentage of the so-called conductive fibers in the first conductive region 14 can range from 1% to 100%. In some examples, the first conductive region 14 may be formed by sewing fine conductive wires around the rim of the crevice 12. The first conductive region 14 may form a U shape, and contains a first end 141 and a second end 143. This type of cloth materials that can be used to form electronic components can be used as an accessory which is sewn into clothing, bed sheets, or other leather materials such as a car seat or a steering wheel cover.
The two conductive wires 16 are fixed to the cloth material layer 12, and are connected separately to the first end 141 and the second end 143 of the first conductive region 14.
The control circuit 18 may be set on the cloth material layer 12. It can be a printed circuit board or an IC board. The control circuit 18 is connected separately to the two conductive wires 16, causing the first conductive region 14, the two conductive wires 16 and the control circuit 18 to form a loop together. The control circuit 18 may be internally equipped with a resistor, which is used to measure the resistance in the electrical loop. The control circuit 18 may be equipped with a power source.
The above-mentioned output device 19 is electrically connected to the control circuit 18, and can be an electric horn.
Based on the above structure, when a cloth material that can be used to form an electronic component 10 is not experiencing any form of outside pressure, the crevice 1121 of the cloth material layer 12 is closed, as shown in
The cloth material layer 12 may be highly elastic due to its component of elastic fibers. Therefore, when the user exerts only a minimal force in pulling or dragging from two sides, the crevice 1121 of the cloth material layer 12 will remain closed. The force that the user exerts needs to exceed a set threshold value in order to open up the crevice 1121. This threshold value will depend upon the ratio of the elastic material used in the cloth material layer 12. Moreover, the cloth material layer 12 can be made of non-woven cloth, plastic cloth, leather material, or other less elastic material.
Each of the two sides of the crevice 1121 can also be provided with different materials. For example, one side of the crevice 1121 may be made of a non-elastic material, while the other side of the crevice 1121 may be made of an elastic material. The result is that the force needed to pull and drag the crevice 1121 open would be twice that needed to open the crevice 1121 made of similar elastic material on both sides, in order to produce the same result.
Furthermore, during the design, the crevice 1121 of a cloth material layer 12 may be made wider so that it will tend to remain open even before any outside force is applied. When the user pushes the cloth material layer 12 around the crevice 1121 from both sides, the crevice 1121 will close, thereby effecting a change in the resistance of the electrical loop.
Furthermore, a cloth material that can be used to form an electronic component 10 can also be used as a switch. Here, the ON-OFF function of the switch will be based on the high and low values of the resistance in the electrical loop. And the setting of the switch is determined by the magnitude of the outside force. When the outside force is larger than a certain value, the resistance is simultaneously higher than a set value. The result may be either a short circuit or an open circuit.
Since a cloth material that can be used to form an electronic component 10 is formed on one single piece of a cloth material, the manufacturing process will be a lot easier than if two pieces of cloth material were used.
Furthermore, during the actual manufacturing process, the manufacturer can choose to use cloth materials of differing elasticities, change the size and shape of the crevice 1121, or change the width of the first conductive region 14, or the overlapping of the first conductive region in between the crevices, or the separation of the first conductive region in between the crevice, in order to change the sensitivity and the electric resistance of the cloth material 10. Again, during actual use, a cloth material 10 can be made into a piece of clothing for the user to put on. Based on the different body movements of the user, thereby pulling and dragging the cloth material 10, the output device 19 may emit a sound. Based on this, the cloth material that can be used to form an electronic component 10 can be used by the deaf or mute as a means of communication, or by the user as a signal-producing device. Besides these, a cloth material that can be used to form an electronic component 10 can also be used to detect a change in the user's position. As a position-change posture detecting device, it can help to determine if the user has fallen down, thereby alerting a remote care-taker to come and provide assistance. Furthermore, the output device 19 may be an LED indicator lamp which can light up when there is a change in the resistance in the electrical loop.
Based on the concept of this invention, a cloth material that can be used to form an electronic component 10, in reality, can have different changes varieties. (please refer to
In addition, a cloth material that can be used to form an electronic component 10a may also include two conductive reference areas 15a that is formed in the cloth material layer 12a or in other cloth material layers. The two conductive reference areas 15a may be separated from the first conductive region 14a by a space. The reference areas 15a are electrically connected to a control circuit 18a. When the cloth material 10a is in normal use, the two reference areas 15a and the first conductive region 14a are not in contact with each other, therefore not forming an electrical loop. However, when the two reference areas 15a form an electrical loop, or any one of the two reference areas 15a forms an electrical loop with any one of the first conductive regions 14a, as in the case when the cloth material layer 12a gets wet, the control circuit 18a will automatically cut off power to prevent a short circuit, thereby preventing the user from accidental electrocution. Therefore, the control circuit 18a can be also used as a moisture sensor.
In addition, the number of the crevices 121a in the cloth material layer 12a can be more than three, so the whole structure forms a wave-shape. This can also achieve a similar effect.
Please refer to
The cloth material layer 22 has two crevices 221, which are elastic. The cloth material layer 22 also has an elastic direction D. If the applied force is the same, when the user pulls the cloth material layer 22 along the direction of the elastic direction D, the cloth material layer 22 will have a larger change than if it were pulled along another direction. The direction of extension of the crevice 221 in the cloth material layer 22 is perpendicular to the elastic direction D.
The above-mentioned conductive areas contain a first conductive region 23 and a second conductive region 24, which form on the cloth material layer 22, and are separately located along both sides of the rim of the crevice 221. The reference areas 223 are located on the cloth material layer 22. When outside force is not applied, the first and second conductive regions 23, 24 are in contact with each other, and the resistance is zero. When an outside force is applied, the two conductive regions 23, 24 are separated and the resistance may approach infinitely large. Therefore, this may be a digital signal, rather than an analog signal. The cloth material that can be used to form an electronic component 20 is a simple broken circuit/short circuit switch (ON/OFF switch), and this is not as sensitive as the traditional accelerometers or gyroscopes, and, therefore, this material can be wearable and washable. The cloth material 20 can be used as a gait analyzer and a long-term monitor of position changes. Wearing the cloth material 20, the data on different body positions can be sent in the form of broken circuit/short circuit signals (ON/OFF) as 0 or 1, either through a wired connection or wirelessly, to a nursing facility. Therefore, the nursing facility will know the present condition of the user, for example, whether the user has fallen down, is having a seizure, or has a stroke, or any abnormal change. At the same time, the 0 and 1 signals can be transformed into 3D animation. For example, a stroke patient can use the gait analyzer and position change sensor signals to help with rehabilitation. At the same time, medical personnel can monitor his progress. For normal persons, these signals can be used as an exercise guide. For example, in Tai Chi (Chinese Kong Fu), where emphasis is on the harmony of the boxing movements and the respiration, a lay people may find it difficult to understand the coordination. However, using these respiration and posture sensors, one can show in 3D animation the changes in respiration, making it easier for the beginner to understand.
The cushion pad 25 may be attached on the inner surface of the cloth material layer 22 and has two perforations 251. The locations of these two perforations 251 correspond to the crevices 221 of the cloth material layer 22. The cushion pad 25 may directly contact user's skin 27. The cushion pad 25 may be embedded or sewn into the cloth material layer 22. The cushion pad 25 may be made of a metallic material or a non-metallic material, such as a woven material, non-woven material, or a leather material.
In the above example, the control circuit is set on the cloth material layer 22, and is electrically connected, via the conductive wires 26, to the reference area 223 and the first and second conductive regions 23, 24. The output device may be attached to the cloth material layer 22, and is electrically connected to the control circuit.
Based on these, when an user inserts his finger into the crevice 221 of the cloth material layer 22 (as shown in
Furthermore, during use, the cloth material that can be used to form an electronic component 20 can result in a change in the electric resistance when the cloth material layer 22 is pulled. When the cloth material 20 is made into a tight-fitting garment and worn by a user, it can detect a change in the electric resistance by analyzing the breathing motion of the user. Therefore, this cloth material 20 can be used as a breathing monitoring device. Furthermore, when the cloth material 20 is set on top of a bed or a chair, the pressure that is made to bear on the cloth material layer in different locations will cause changes in the electric resistance, allowing it to fully reflect the changes in sleeping or sitting positions/postures. At the same time, this material may also be used as a swallow action sensor.
Furthermore, because the change in the electric resistance is related to the magnitude of pressure or strain that is made to bear on the cloth material layer 22, the cloth material 20 may be used as a variable resistor, a pressure gauge, a strain gauge, or a switch. And the settings of this switch may be determined by the magnitude of force that is applied. When this force is higher than a predetermined value, then it can be set as on or off.
Referring to
Based on this, the cloth material that can form an electronic component 20a can be used as a touch switch. Because the capacitance is inversely proportional to the distance between the first conductive region 23a and the second conductive region 24a, and directly proportional to the surface area of the first conductive region 23a and the second conductive region 24a, when a user uses his finger to lightly touch the rim of the crevice 221a of the cloth material layer 22a, there will be a small change in the capacitance due to a slight change in shape and distance between the first conductive region 23a and the second conductive region 24a. During this time, the control circuit 28a will detect a change in capacitance and may command the output device 29a to emit a signal. Furthermore, the cloth material that can form an electronic component 20a can be designed in such a way that when a user inserts his finger in the crevice 221a and causes a large change in the capacitance, only then will the control circuit 28a command the output device 29a to emit a signal, thereby preventing accidental triggering. In addition, the first conductive region 23a and the second conductive region 24a can be used as an electrode. When it comes into contact with the user's skin, the cloth material 20a can measure the user's physiologic signs, for example, EKG, respiration, EMG, EEG, body fat, swallowing, or human surface resistance, or to provide an electric current, as in the electric current chips used in TENS (Transcutaneous Electrical Nerve Stimulation). Furthermore, there is no need for direct skin contact in order to detect ECG, heart rate and other physiologic parameters.
In addition, the designer can change a distance between the first conductive region 23a and the second conductive region 24a, surface area, material or surface texture to produce cloth materials with different capacitance. Again, since the first conductive region 23a and the second conductive region 24a are separated from the rim of the crevice 221a by a fixed distance, the first conductive region 23a and the second conductive region 24a will not come into contact with each other and cause a short circuit even if the crevice 221a closes. Because the distance of the crevice 221 changes with outside forces, so does the capacitance. Therefore, this device can be used as a position change sensor, speed sensor, and acceleration sensor.
Again, since the change in capacitance level depends on the amount of strain that is made to bear upon the cloth material layer 22a, hence the cloth material that can form an electronic component 20 can be used as a variable capacitor.
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The above description is only about preferred examples of embodiments of the invention, and is not intended to limit the scope of the invention in any form. Even though this invention is described using several preferred examples mentioned above, these examples are not to be used to limit the scope of this invention. Any person familiar with the art can make modifications or variations that are equivalents based on the above examples, without departing from the scope of the invention. Any embodiments that do not depart from the scope of the invention, and are based on the technical essence of this invention, having simple modification, equivalent variations or modifications, are still included in the scope of the invention.
Number | Date | Country | Kind |
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PCT/CN2007/002648 | Sep 2007 | WO | international |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/CN2008/001571 | 9/3/2008 | WO | 00 | 3/18/2010 |
Publishing Document | Publishing Date | Country | Kind |
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WO2009/033362 | 3/19/2009 | WO | A |
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20060246744 | Marmaropoulos et al. | Nov 2006 | A1 |
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H02-121458 | Oct 1990 | JP |
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2006-527460 | Nov 2006 | JP |
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Number | Date | Country | |
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20100170704 A1 | Jul 2010 | US |