DE102019118887A1 - Method for producing a pressure detection device, pressure detection device and glove - Google Patents

Abstract

The invention relates to a method for generating a pressure detection device (12) for a user (14) for detecting a pressure exerted by means of the pressure detection device (12) on a motor vehicle component of a motor vehicle, in which the pressure detection device (12) can be carried on the user's hand ( 14), and in which a first pressure sensing element (20) of the pressure sensing device (12) and a second pressure sensing element (22) separate from the first pressure sensing element (20) are embroidered by means of an electrically conductive thread (28) in a textile material element (26) , wherein the first pressure sensing element (20) and the second pressure sensing element (22) are arranged in such a way that when pressure is applied to the pressure sensing elements (20, 22) the pressure is sensed relative to one another, the first pressure sensing element (20) and / or the second pressure sensing element (22) into the textile fabric by means of a lockstitch (30) ffelement (26) being embroidered. The invention also relates to a pressure detection device (12) and a glove (10).

Description

The invention relates to a method for generating a pressure detection device for a user for detecting a pressure exerted by means of the pressure detection device on a motor vehicle component of a motor vehicle. The invention also relates to a pressure detection device and a glove with a pressure detection device.

Gloves with pressure detection devices are already known in particular when producing components, in particular when producing motor vehicle components. The electrode of the pressure detection device is produced by means of a conductive thread. The electrode is inserted in the form of a pattern according to the relevant force range. This glove is often assembled by a factory worker with the manual plug connection in the production of motor vehicles. To improve this assembly process, the worker can wear a finger cot / thumb-thumb, which can in particular correspond to the pressure detection device, which can be configured with a force, acceleration and rotation rate sensor. With this worker assistance system, the force or pressure applied by the worker can be recorded during the assembly process of a connector. When a plug connection is successfully plugged in, a characteristic curve over time results, which can be correspondingly evaluated in particular by means of an electronic computing device for the pressure detection device.

In particular, it is already known in this regard that the construction of such a sensor twister consists of two layers. In particular, a piezoresistive material is used for this, which is surrounded by two layers of material. These two layers contain the electrodes. The electrodes consist of a silver-plated thread that is embroidered into the fabric. In the normal state, in other words when no force is exerted on the piezoresistive material, the resistance between the electrodes is very high. If force is applied to the piezoresistive material, as is the case when a connector is pressed in, the resistance between the electrodes is reduced. This relationship enables an evaluation and the recording of the force or the pressure over time.

The WO 2017/174505 A1 discloses a multi-layer sensory fabric with several and, for example, three fabric layers. Each fabric layer has weft threads and warp threads. Optionally, a binding system with binding weft threads and binding warp threads can be provided. The first fabric layer and the second fabric layer each have electrically conductive strips and electrically non-conductive strips extending in a warp direction or in a weft direction, which are arranged alternately next to one another, the strips of the two fabric layers crossing one another. These are interconnected within the tissue structure.

Furthermore, the WO 2013/120624 A1 a textile pressure sensor for the capacitive measurement of a pressure distribution of objects of any shape, in particular body parts, on a surface, which has a first at least partially conductive structure and a second at least partially conductive structure, the first and the second at least partially conductive structure by a dielectric intermediate element are separated from one another, and wherein conductive regions of the first structure form capacitors with opposing conductive regions of the second structure. The textile pressure sensor is characterized in that the first and / or the second at least regionally conductive structure is designed as a knitted fabric.

The object of the present invention is to create a method, a pressure detection device and a glove by means of which a pressure can be detected in an improved manner.

This object is achieved by a method, a pressure detection device and a glove according to the independent patent claims. Advantageous embodiments are specified in the subclaims.

One aspect of the invention relates to a method for generating a pressure detection device for a user for detecting a pressure exerted by means of the pressure detection device on a motor vehicle component of a motor vehicle, in which the pressure detection device is generated to be worn on the user's hand, and in which a textile element is inserted The first pressure sensing element of the pressure sensing device and a second pressure sensing element separate from the first pressure sensing element are embroidered by means of an electrically conductive thread, the first pressure sensing element and the second pressure sensing element being arranged such that the pressure is sensed relative to one another when the pressure sensing elements are pressurized.

It is provided that the first pressure detection element and / or the second pressure detection element are embroidered into the textile material element by means of a lock stitch.

This enables an improved detection of the pressure by means of the pressure detection device. In particular, the use of the lock stitch can prevent the electrically conductive thread from being damaged by repeated piercing. This allows stability of the results with repeated loads. Furthermore, a higher conductivity of the embroidered electrodes and an improved reproducibility can be realized.

In particular, the embroidery process begins at the connections of the pressure detection device and also ends there. As a result, the needle will use the puncture holes several times when producing the pressure detection device both on the way there and on the way back of the embroidery process. If the same holes are pierced several times, the existing thread can be damaged. This has some disadvantages. In particular, the lock stitch technique according to the invention can prevent repeated piercing, in particular in the area of the pressure detection elements, whereby damage to the electrically conductive yarn can be prevented. In particular, through the improved manufacture of the pressure detection elements, an improved detection of the pressure can thus take place, whereby improved measurement results can be realized.

In particular, the pressure detection can take place resistively or capacitively. In particular, the first pressure sensing element and the second pressure sensing element have corresponding piezoresistive materials for this purpose. Furthermore, it is provided in particular that the conductor tracks, in particular the electrically conductive yarn, are embroidered over for insulation so that the first pressure sensing element and the second pressure sensing element are electrically isolated from one another. This can prevent a short circuit when using the pressure detection device.

In particular, it can furthermore be provided that the pressure detection device is arranged, for example, on a thumb or on a further finger element of a corresponding glove. Furthermore, it can also be provided that the pressure detection device is arranged, for example, on a palm element of a glove. This makes it possible for the pressure detection device according to the invention to be used, in particular with different gloves, for different manufacturing processes of different motor vehicle components.

According to an advantageous embodiment, the first pressure sensing element and / or the second pressure sensing element is made from the electrically conductive yarn with at least two essentially parallel sensing rows, a transition area between a first sensing row and a second sensing row being stitched in an arc shape. In particular, when changing from one vertical path to another vertical path, which in this example corresponds to the detection rows, the corresponding arcuate connection is used. The electrically conductive thread is thus embroidered in a curved shape instead of with an edge, so that the electrically conductive thread can also be prevented from being inserted into the same puncture holes that are already present, so that the pressure can be better detected.

It is also advantageous if a running embroidery structure of a respective detection row of the first pressure detection element and / or the second pressure detection element is embroidered in a straight line and a retrograde embroidery structure of the first pressure detection element and / or the second pressure detection element is embroidered in a jagged manner. In particular, the embroidery structure running towards it thus runs vertically, for example, and the embroidery structure that is receding is jagged compared to the embroidery structure running vertically. In this way it can be prevented that the puncture holes of the returning embroidery structure are set in the puncture holes of the embroidering structure running towards it. This enables an improved detection of the pressure.

Furthermore, it has proven to be advantageous if the embroidering structure running towards it is embroidered below the embroidery structure running back or the embroidery structure running back below the embroidery structure running towards it is embroidered. In particular, the moving embroidery structure and the returning embroidery structure overlap at least in some areas. In particular, the moving embroidery structure and the returning embroidery structure touch at least in some areas. As a result, for example, a corresponding pressure detection can still be implemented even in the case of a torn electrically conductive yarn, since electrical contacting can nevertheless be implemented by touching the embroidery structure flowing in and the embroidery structure returning. In particular, by embroidering below or above the corresponding embroidery structures, the first pressure-sensing element and the second pressure-sensing element can be generated simply and yet reliably. A simple yet reliable generation of the pressure detection device is thereby realized.

Furthermore, it has proven to be advantageous if the first pressure sensing element and the second are made using a stainless steel thread or a silver thread as the electrically conductive thread Pressure sensing element are embroidered into the textile fabric element. In particular, the first pressure sensing element and the second pressure sensing element can thereby be generated in a simple manner.

In a further advantageous embodiment, the first pressure detection element and / or the second pressure detection element are additionally embroidered into the textile element with an electrically conductive lower thread. In the embroidery process in particular, the bobbin thread fixes the electrically conductive thread on the textile element. It is now particularly advantageous if this is also designed to be electrically conductive. This allows the pressure to be detected better.

In a further advantageous embodiment, a first row of detection of the first pressure detection element is stitched orthogonally offset with respect to a row of detection of the second pressure detection element. In particular, a respective pressure detection element has a multiplicity of detection rows. In particular, the plurality of detection rows of the first pressure detection element is then offset orthogonally to the plurality of detection rows of the second pressure detection element. In particular, the first pressure sensing element and the second pressure sensing element thus form a raster shape or a matrix shape. As a result, the points of intersection can be increased compared to the pressure detection elements, which means that the pressure can be detected in an improved manner.

In a further advantageous embodiment, the first pressure detection element and / or the second pressure detection element is embroidered as a respective electrode comb. In other words, the first pressure detection element and / or the second pressure detection element has a plurality of detection rows that essentially run parallel at least in regions. A respective row of detection is then in turn generated, in particular, in the lock stitch. In particular, it can be provided that, in order to match a finger structure, the electrode comb, or the detection rows to one another, is tapered at a respective end of the electrode comb. The pressure can thereby advantageously be recorded.

A further aspect of the invention relates to a pressure detection device with at least one first pressure detection element and with at least one second pressure detection element, the pressure detection device being produced by means of a method according to the preceding aspect. In particular, the pressure detection device is produced by means of the method. In particular, the pressure detection device has an electronic computing device by means of which the signals of the first pressure detection element and the second pressure detection element can be evaluated and the pressure can be detected on the basis of the signals.

A further aspect of the invention relates to a glove for a user to put on with at least one pressure detection device according to the preceding aspect.

Advantageous embodiments of the method are to be regarded as advantageous embodiments of the pressure detection device and of the glove. For this purpose, the pressure detection device and the glove have physical features which enable the method or an advantageous embodiment thereof to be carried out.

Further features of the invention emerge from the claims, the figures and the description of the figures. The features and combinations of features mentioned above in the description as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination, but also in other combinations or on their own.

• 1 eine schematische Perspektivansicht einer Ausführungsform eines Handschuhs mit einer Ausführungsform einer Druckerfassungsvorrichtung; und
• 2 eine schematische Ansicht einer Ausführungsform einer Druckerfassungsvorrichtu ng.

The invention will now be explained in more detail using a preferred exemplary embodiment and with reference to the drawings. Show it:

• 1 a schematic perspective view of an embodiment of a glove with an embodiment of a pressure detection device; and
• 2 a schematic view of an embodiment of a pressure detection device.

Identical or functionally identical elements are provided with the same reference symbols in the figures.

1 shows an embodiment of a glove in a schematic perspective view 10 with a pressure sensing device 12 . The glove 10 is for one user 14th provided. The glove 10 is used in particular to detect a pressure on a motor vehicle component for a motor vehicle. By means of the glove 10 In particular, a pressure can be measured when, for example, a component is inserted into the motor vehicle component. To this end, in the present exemplary embodiment, the glove 10 the pressure sensing device 12 on a thumb element of the glove 10 on. Alternatively, the pressure sensing device 12 on another finger element of the glove 10 to be ordered. Additionally or instead of this, the pressure detection device 12 also on the palm of the glove 10 to be ordered. The pressure sensing device 12 has a first connection for this purpose 16 and a second port 18th on. The first connection 16 is with a first electrode 20th ( 2 ) and with a second electrode 22nd ( 2 ) electrically coupled.

In other words it shows 1 the pressure sensing device 12 with at least one pressure sensing element 20th and with at least the second pressure sensing element 22nd . In particular, the glove 10 or the pressure sensing device 12 additionally an electronic computing device 24 have, by means of which the generated signals from the pressure detection device 12 can be evaluated so that a pressure can be determined.

2 shows in a schematic view an embodiment of the pressure detection device 12 . For generating the pressure detection device 12 for the user 14th for detecting the by means of the pressure detection device 12 pressure exerted on a motor vehicle component of a motor vehicle is the pressure detection device 12 to be carried on one hand of the user 14th generated, and it is in a textile fabric element 26th the first pressure sensing element 20th the pressure sensing device 12 and that to the first pressure sensing element 20th separate second pressure sensing element 22nd by means of an electrically conductive yarn 28 embroidered, the first pressure sensing element 20th and the second pressure sensing element 22nd be arranged such that when pressure is applied to the pressure sensing elements 20th , 22nd relative to each other the pressure is detected.

It is provided that the first pressure sensing element 20th and / or the second pressure sensing element 22nd by means of a lock stitch 30th into the textile fabric element 26th be embroidered.

In particular, the 2 the first pressure sensing element in an enlarged view 20th . This is enlarged by a first arrow and shows a first series of acquisitions 32 . In a further step, which is represented by arrows, shows 2 the first row of acquisitions 32 and a second row of acquisitions 34 and a third series of acquisitions 36 . The respective collection series 32 , 34 , 36 are in particular by means of the lock stitch 30th embroidered. The one for the first pressure sensing element 20th Of course, what is shown also applies to the second pressure sensing element 22nd . In the 2 are the pressure sensing elements 20th , 22nd shown only schematically and in particular shown schematically with respect to their arrangement to one another. When the pressure sensing elements 20th , 22nd on the glove 10 are arranged, then the two pressure sensing elements 20th , 22nd especially arranged one below the other.

In particular, the 2 further that the first pressure sensing element 20th and / or the second pressure sensing element 22nd with at least the two essentially parallel rows of detection 32 , 34 , 36 , in this example with the three acquisition rows 32 , 34 , 36 , from the electrically conductive yarn 28 is made, being a transition area 38 between a first series of acquisitions 32 and the second row of acquisitions 34 as well as in the present embodiment of the third row 36 is embroidered in an arc shape. In particular, additional rows of acquisition 32 , 34 , 36 into the textile fabric element 26th be embroidered.

In particular, the 2 the electrically conductive yarn in the line shape 28 . The respective puncture holes are through the points 40 displayed during the embroidery process.

Furthermore, the 2 that a flowing embroidery structure 42 of a respective acquisition series 32 , 34 , 36 of the first pressure sensing element 20th and / or the second pressure sensing element 22nd straight embroidery and a declining embroidery structure 44 of the first pressure sensing element 20th and / or the second pressure sensing element 22nd is embroidered in a jagged manner. In particular, the lock stitch 30th will be realized.

Furthermore, it can be provided that the embroidery structure running towards it 42 below the returning embroidery structure 44 or the returning embroidery structure 44 underneath the embroidery structure 42 is embroidered.

Furthermore, it can be provided that by means of a stainless steel thread or by means of a silver thread as the electrically conductive thread 28 the first pressure sensing element 20th and the second pressure sensing element 22nd into the textile fabric element 26th be embroidered.

Furthermore, it can be provided that the first pressure sensing element 20th and / or the second pressure sensing element 22nd additionally with an electrically conductive bobbin thread in the textile fabric element 26th be embroidered.

Furthermore, in 2 shown that one acquisition series 32 , 34 , 36 of the first pressure sensing element 20th orthogonally offset in relation to a detection row 32 , 34 , 36 of the second pressure sensing element 22nd is embroidered. Furthermore, the 2 in particular that the first pressure sensing element 20th as well as the second Pressure sensing element 22nd is tapered in a respective end region. This is particularly a finger shape of the user 14th owed. This can also be done in a fingertip area of the user 14th the pressure can be reliably recorded.

Furthermore, the 2 that the first pressure sensing element 20th and / or the second pressure sensing element 22nd as the respective electrode comb 46 be embroidered.

In particular, the solution according to the invention improves the reproducibility of the measurement results within the pressure detection device 12 as well as increased conductivity of the pressure sensing elements 20th , 22nd realized. Furthermore, damage to the electrically conductive yarn 28 be prevented.

In particular, this is made possible by the use of the lock stitch 30th realized and on the other hand by the fact that the electrically conductive yarn 28 no kinks in the course, especially in the transition area 38 , having. Instead, the electrically conductive yarn 28 Arched stitching at the corners.

In particular is the procedure of the lock stitch 30th in the 2 explained. During the creation process of a respective series of data 32 , 34 , 36 the embroidery needle is initially being led down on a path. The lock stitch comes on the way back 30th for use. Here the needle is inserted offset from the original path at predefined distances. Thus, a piercing into the already existing electrically conductive thread becomes 28 prevents and also an improved surface overlap of the electrically conductive yarn 28 reached. In particular, when changing from a vertical path, which in the present example is a running embroidery structure 42 is designated, the arcuate connection is selected. The advantage that results from this is also that the puncture holes 40 need not be used again during the outbound route.

To further improve the sensor properties of the pressure detection device 12 can be achieved by increasing the conductivity of the pressure sensing elements 20th , 22nd can be achieved by using the conductive bobbin thread. In particular, this can damage the electrically conductive yarn 28 can be prevented by repeated piercing. This can increase the stability of the results with repeated loads. Furthermore, a higher conductivity of the embroidered pressure sensing elements can be achieved 20th , 22nd will be realized. Furthermore, a higher reproducibility can be realized. By using the conductive bobbin thread, the electrical conductivity of the pressure sensing elements 20th , 22nd be improved.

Overall, the invention shows an electrode improvement in textile pressure sensors.

List of reference symbols

10

Glove

12

Pressure detection device

14th

Users

16

first connection

18th

second connection

20th

first pressure sensing element

22nd

second pressure sensing element

24

electronic computing device

26th

textile fabric element

28

electrically conductive yarn

30th

Lock stitch

32

first series of acquisitions

34

second row of acquisitions

36

third row of acquisitions

38

Transition area

40

Puncture hole

42

running embroidery structure

44

reverse embroidery structure

46

Electrode comb

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2017/174505 A1 [0004]
• WO 2013/120624 A1 [0005]

Claims (10)

Method for generating a pressure detection device (12) for a user (14) for detecting a pressure exerted by means of the pressure detection device (12) on a motor vehicle component of a motor vehicle, in which the pressure detection device (12) is generated to be carried on one hand of the user (14) , and in which a first pressure sensing element (20) of the pressure sensing device (12) and a second pressure sensing element (22) separate from the first pressure sensing element (20) are embroidered by means of an electrically conductive thread (28) in a textile fabric element (26), the first Pressure sensing element (20) and the second pressure sensing element (22) are arranged in such a way that when pressure is applied to the pressure sensing elements (20, 22) the pressure is sensed relative to one another, characterized in that the first pressure sensing element (20) and / or the second pressure sensing element ( 22) into the textile material by means of a lock stitch (30) element (26) being embroidered. Procedure according to Claim 1 , characterized in that the first pressure detection element (20) and / or the second pressure detection element (22) are made from the electrically conductive yarn (28) with at least two substantially parallel detection rows (32, 34, 36), a transition area ( 38) is stitched in an arc shape between a first row (32) and a second row (34). Procedure according to Claim 1 or 2 , characterized in that a running embroidery structure (42) of a respective detection row (32, 34, 36) of the first pressure detection element (20) and / or the second pressure detection element (22) is embroidered in a straight line and a returning embroidery structure (44) of the first pressure detection element ( 20) and / or the second pressure sensing element (22) is embroidered in a jagged manner. Procedure according to Claim 3 , characterized in that the embroidering structure (42) running towards the embroidery structure (44) or the embroidering structure (44) running back below the embroidering structure (42) running towards it is embroidered. Method according to one of the preceding claims, characterized in that the first pressure sensing element (20) and the second pressure sensing element (22) are embroidered into the textile fabric element (26) by means of a stainless steel thread or a silver thread as the electrically conductive thread (28). Method according to one of the preceding claims, characterized in that the first pressure sensing element (20) and / or the second pressure sensing element (22) are additionally embroidered into the textile fabric element (26) with an electrically conductive lower thread. Method according to one of the preceding claims, characterized in that a detection row (32, 34, 36) of the first pressure detection element (20) is stitched orthogonally offset with respect to a detection row (32, 34, 36) of the second pressure detection element (22). Method according to one of the preceding claims, characterized in that the first pressure sensing element (20) and / or the second pressure sensing element (22) is embroidered as a respective electrode comb (46). Pressure detection device (12) with at least one first pressure detection element (20) and with at least one second pressure detection element (22), wherein the pressure detection device (12) by means of a method according to one of the Claims 1 to 8th is made. Glove (10) for putting on for a user (14) with at least one pressure detection device (12) Claim 9 .

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