CN112783331A - Input device for a motor vehicle with a specific arrangement of flexible circuit boards - Google Patents

Input device for a motor vehicle with a specific arrangement of flexible circuit boards Download PDF

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Publication number
CN112783331A
CN112783331A CN202011237335.7A CN202011237335A CN112783331A CN 112783331 A CN112783331 A CN 112783331A CN 202011237335 A CN202011237335 A CN 202011237335A CN 112783331 A CN112783331 A CN 112783331A
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CN
China
Prior art keywords
circuit board
input device
light guide
light
preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011237335.7A
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Chinese (zh)
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CN112783331B (en
Inventor
N.瓦杰达
E.雷蒙多
Z.弗罗利赫
V.塞拉齐瓦
S.斯陶德
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Valeo Schalter und Sensoren GmbH
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Valeo Schalter und Sensoren GmbH
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Publication of CN112783331A publication Critical patent/CN112783331A/en
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Publication of CN112783331B publication Critical patent/CN112783331B/en
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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • H03K17/9622—Capacitive touch switches using a plurality of detectors, e.g. keyboard
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K37/00—Dashboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K37/00—Dashboards
    • B60K37/20—Dashboard panels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/143—Touch sensitive instrument input devices
    • B60K2360/1434—Touch panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/339—Translucent dashboard skins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
    • B60K2360/33—Illumination features
    • B60K2360/345—Illumination of controls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/40—Hardware adaptations for dashboards or instruments
    • B60K2360/42—Circuit board features
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/96015—Constructional details for touch switches
    • H03K2217/96023—Details of electro-mechanic connections between different elements, e.g.: sensing plate and integrated circuit containing electronics
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960785—Capacitive touch switches with illumination
    • H03K2217/96079—Capacitive touch switches with illumination using a single or more light guides

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

One aspect of the invention relates to an input device (1) for a motor vehicle, having a cover (2) having an input surface (3) with at least one light source (15), and having a light guide (10) with which light (L) of the light source (15) can be guided to at least one region (4, 5, 6, 21) that can be backlit and is formed on the input surface (3); and the input device (1) has a first circuit board (19), the light source (15) being arranged on the first circuit board (19), wherein the input device (1) has, in addition to the first circuit board (19), a flexible circuit board (8), the flexible circuit board (8) being arranged between the light guide (10) and the first circuit board (19).

Description

Input device for a motor vehicle with a specific arrangement of flexible circuit boards
Technical Field
One aspect of the invention relates to an input device for a motor vehicle. The input device has a cover. The cover has an input face. Furthermore, the input device has at least one light source and at least one light guide. The light guide may be used to guide light from the light source to at least one area that may be backlit and formed on the input face. Furthermore, the input device has a first circuit board on which the light source is arranged.
Background
Input devices for motor vehicles having capacitive sensing systems are well known. In such capacitive sensors, activation thereof is sensed capacitively, for example by touching the input surface with one of the user's fingers. In this case, it is also known to visually indicate such locally activated regions of the input face. This is done, for example, by areas that can be backlit. As a result, the user can visually recognize on the input surface where the partial area of the input surface he has to touch or activate is located.
In this case, a corresponding input device is known, for example, from US2012/0279843a 1. In the configuration of this document, there is an input face on which a print area is formed. The reflector is formed to be supported on the opposite rear side of the input surface. A light guide, which is directly supported on the input face and into which light from light sources arranged on the circuit board can be input, guides the light to the reflector, through which the light beams pass and then backlight the area that can be backlit on the input face.
In this known embodiment, the input means is constituted by a plurality of separate components. This increases the assembly costs. As a result, in particular the positioning of the individual components is subject to undesirable tolerances. This leads in particular to the situation that in some cases the backlit areas are backlit to a limited extent. Furthermore, the construction with a rigid circuit board is disadvantageous. In this case, there are limitations in terms of installation space and forced positioning shapes and geometries, particularly for light guides.
Disclosure of Invention
It is an object of the present invention to provide an input device for a motor vehicle which is improved in function.
This object is achieved by an input device having the features of claim 1.
One aspect of the invention relates to an input device for a motor vehicle. The input device has a cover. The cover has an input face. Furthermore, the input device has at least one light source. The input device also has at least one light guide with which the light of the light source can be guided to at least one region that can be backlit. At least one area that can be backlit is formed on the input face. In addition, the input device has a first circuit board. A light source is disposed on the first circuit board. In an advantageous embodiment, the input device has, in addition to the first circuit board, a flexible circuit board separate from the first circuit board. The flexible circuit board is disposed between the light guide and the first circuit board. This means that the portions are positioned in a respective serial or positional arrangement relative to each other when considered in relation to a vertical cross-sectional view of the input device. By such a configuration of the input device having the flexible circuit board other than the first circuit board, the electronic components can be more appropriately distributed as required. In particular, the flexible circuit board also allows other parts of the input device, in particular also other positions and geometries of the light guide, to be configured more appropriately as required. The display and/or contact area on the input face is indicated by a backlit area.
In an advantageous embodiment, it is provided that at least one sensor electronics system for sensing and inputting on the input surface is arranged on the flexible printed circuit board. The sensor electrodes are in particular capacitive electrodes. Thus, the input device is designed to capacitively sense operator control actions or user input actions. Since the sensor electrode is always formed on the flexible circuit board, this results in a configuration thereof that improves the mounting space. Last but not least, this also allows a more flexible geometry and a more flexible adaptation of the flexible circuit board to the shape of the light guide. This results in a more versatile and more specific location of the sensor electrodes. In particular, it is therefore also possible, due to its rigidity, to arrange the backlighteable region at a location where it cannot be attached only to the first circuit board, as is also the case in the prior art. This results in a separate, more versatile configuration of the input face.
Provision is preferably made for the cover and the light guide to be embodied as a single-piece component. Thus, they are manufactured in one piece, in particular without an additional joining process. This is a particularly advantageous embodiment. Since the number of separate parts of these components is reduced in this way. On the other hand, in this way, positional tolerances and assembly tolerances between the cover and the light guide can be avoided. This makes it possible to direct the light particularly precisely and permanently constantly to the backlit region on the input surface.
In an advantageous embodiment, it is provided that the one-piece component is an at least 2K component. The one-piece component is thus in particular a two-part injection-molded component. Thus, with this configuration, plastic parts that can also be formed with complex shapes can be manufactured. Furthermore, the individual parts of the one-piece component, in particular the cover and the light guide, can still be configured in a precisely shaped manner.
In an advantageous embodiment, it is provided that the cover is a 1K part and the light guide is a 2K part. It can therefore be provided that the one-piece component with the cover and the light guide is formed from at least two different plastics or, however, from three different plastics. It can be provided here that the plastic of the cover is the plastic also used in the 2K part of the light guide. However, it can also be provided that the plastic of the cover is different from the two plastics of the light guide.
In an advantageous embodiment, it is provided that the light guide is embodied in a transparent manner. In particular, the light guide is made of transparent polycarbonate. In particular, a structure that reflects light is integrated into the light guide. These structures that reflect light are formed of a plastic that is different from the plastic of the rest of the light guide. In particular, the structure that reflects light is opaque.
In an advantageous embodiment, it is provided that the part with the cover and the light guide is arranged to be movable relative to the first circuit board. In particular, a defined relative movement can be achieved here. As a result, the input of light from the light source to the light guide can be adjusted particularly advantageously. Since the light source is preferably arranged in a fixed manner in a position on the first circuit board, a particularly preferred input situation of light in the light guide can be achieved by adjusting the position between the component and the first circuit board. Furthermore, this configuration also makes it possible to favorably adjust the position between the flexible circuit board and the component. As a result, operator controlled capacitive sensing of the input device may be improved.
Provision is preferably made for the light guide to have an L-shape in a vertical cross section of the input device. Thus, installation space in the width direction and thus in the horizontal plane can be saved. This also makes it possible for the first circuit board to have a light source on its upper side and for the light source to be oriented vertically in its main illumination direction. This is because the L-shape also enables light emitted vertically upwards from the light source to be input into the free end of the vertical limb of the L-shape in an improved manner.
In particular, the L-shaped horizontal limbs have a structure that reflects light.
Preferably, the light guide has a varying thickness, in particular over the horizontal light guide sections. In particular, it is provided that the light guide has at least one first portion, when considered in a vertical cross-sectional view, having a first thickness when considered in the vertical direction, and the light guide section has at least one second portion, having a second thickness, which is smaller in the vertical direction compared to the first portion. In particular, the structure that reflects light is formed in the light guide in the first portion having a greater thickness in this respect. Provision is preferably made for the cover to have corresponding regions of different thickness. As a result, a tooth arrangement is formed between the light guide and the cover.
In an advantageous embodiment, it is provided that the flexible printed circuit board is arranged with a first printed circuit board section parallel to the light guide. In particular, the first circuit board section is horizontally oriented. In an advantageous embodiment, it is provided that the flexible printed circuit board is provided with a first printed circuit board section which is supported directly on the surface of the light guide.
In particular, the first circuit board section of the flexible circuit board is arranged spaced apart from the first circuit board. Due to this configuration, a gap can be formed, so that, for example, heat generated by components of the first circuit board does not act directly on the flexible circuit board section of the flexible circuit board either.
Provision can be made for the flexible printed circuit board to be connected directly to the first printed circuit board via the second printed circuit board section. In particular, the second circuit board section can also be vertically oriented. In particular, both a mechanical and an electrical connection is provided between the flexible circuit board and the first circuit board.
Another independent aspect of the invention relates to an input device for a motor vehicle. The input device has a cover. The cover has an input face. Furthermore, the input device has at least one light source. The input device also has at least one light guide with which the light of the light source can be guided to at least one region that can be backlit. At least one area that can be backlit is formed on the input face. In addition, the input device has a first circuit board. A light source is disposed on the first circuit board. In particular, the light guide and the cover are implemented as a single-piece component. In particular, they are manufactured as at least 2K components.
Embodiments of the first independent aspect of the input device should be seen as advantageous embodiments of the further independent aspect of the input device.
Drawings
Exemplary embodiments of the present invention are explained in more detail below with reference to schematic diagrams. In the figure:
FIG. 1 shows a schematic vertical cross-section through an exemplary embodiment of an input device;
FIG. 2 shows a vertical cross-section of another exemplary embodiment of an input device according to the present invention;
FIG. 3 shows a vertical cross-section through a component with a cover and a light guide of the input device according to FIG. 1; and
fig. 4 shows a perspective view of the component according to fig. 3.
In the drawings, identical or functionally identical elements have the same reference numerals.
Detailed Description
Fig. 1 shows a vertical section through an input device 1 for a motor vehicle. The input device 1 may be a component of an operator control device of a motor vehicle. The input device 1 has a cover 2. The cover 2 constitutes the exterior of the input device 1. The cover 2 may be a housing part of the housing of the input device 1. The cover 2 has an input face 3. In an exemplary embodiment, a plurality of regions 4 and 5 that can be backlit are formed on the input face 3. A further area 6 which can be backlit can also be provided.
In particular, an operator control area 7 is also formed on the input surface 3. In the exemplary embodiment shown, the operator control region 7 is embodied as a recess or depression in the input surface 3 and thus also in the cover 2.
The input device 1 is designed to detect activation capacitively. If the activation is effected on the area 7, for example by a finger, the activation can be sensed by a capacitive sensor system of the input device 1.
To this end, in an advantageous embodiment, at least one sensor electrode 9 is arranged on the flexible circuit board 8 of the input device 1. The sensor electrodes 9 are in particular capacitive electrodes.
The input device 1 has a light guide 10 in addition to the cover 2. In an exemplary embodiment, the light guide 10 is constructed in an L-shape, which is shown in the vertical cross-sectional view. In this case, the light guide 10 has a first light guide section 11. The first light guide section 11 forms a first L-branch. In an exemplary embodiment, the first light guide section 11 is oriented horizontally. Furthermore, in the exemplary embodiment, light guide 10 has a second light guide section 12. The second light guide section 12 is oriented vertically in the exemplary embodiment. The light-guiding section 12 in particular forms a second L limb.
The light guide 10, in particular the first light guide section 11, has a structure 13 that reflects light. In particular, the at least one further structure 14, which reflects light, is also formed integrated into the light guide 10, in particular into the first light guide section 11. Light L from the light source 15 of the input device 1 may be reflected upwards in the direction of the cover 2 by these structures 13 and/or 14 reflecting the light. In this way, light L may backlight regions 4 and 5 that may be backlit. In particular, for example, backlighting of the region 7 can also be brought about. To this end, additional structures that reflect light may be formed in the first light guide section 11, if appropriate.
The flexible light guide 8 has a first light guide section 16. The latter being formed parallel to the first light guiding section 11. Furthermore, in an advantageous embodiment, the flexible printed circuit 8 has a second light guide section 11. The latter being oriented at an angle with respect to the first light guide section 11. In particular, the second circuit board section 17 is oriented vertically in a vertical sectional view. The second circuit board section 17 preferably extends parallel to the second light guide section 12. Obviously, in this vertical cross-sectional view, the light guide 10 is formed between the cover 2 and the flexible circuit board 8.
In particular, the cover 2 and the light guide 10 are embodied as a single-piece component. In particular, the component 18 is an at least 2K component.
Provision can be made for the cover 2 to be formed from polycarbonate, in particular white polycarbonate. The light guide 10 is preferably a 2K part. In particular, the light guide 10 is formed of transparent polycarbonate. In particular, the structures 13 and 14 reflecting light are formed of an opaque material.
As can also be seen from fig. 1, the light guide 10, in particular the first light guide section 11, is formed by a first portion 11 a. The first portion 11a has a thickness d1 in the vertical direction. Furthermore, the first light guide section 11 has a second portion 11 b. The second portion 11b has a thickness d2 measured in the vertical direction. The thickness d2 is less than the thickness d 1. In particular, a structure 13 that reflects light is formed in the first portion 11 a. In particular, a preferably present further structure 14 which reflects light is formed in a further portion 11c of the light-guiding section 11. In particular, the thickness d3 of the further portion 11c is greater than the thickness d2, as measured in the vertical direction.
Furthermore, the input device 1 has a first circuit board 19. In particular, the first circuit board 19 is rigid. The first circuit board 19 is a circuit board separate from the flexible circuit board 8. The first circuit board 19 is formed spaced apart from the circuit board section 16. In particular, the distance between the first circuit board 19 and the second circuit board section 16 measured in the vertical direction is a multiple of the thickness of the first circuit board 19 measured in the vertical direction. In particular, as a result, a cavity 20 is formed between the first circuit board 19 and the first circuit board section 16 of the flexible circuit board 8.
The flexible circuit board 8 is arranged between the light guide 10 and the first circuit board 19 in the vertical direction. In particular, it is arranged completely between the light guide 10 and the first circuit board 19.
The flexible circuit board 8 is directly connected to the first circuit board 19. In particular, mechanical and electrical connections are provided. In particular, the flexible circuit board 8 is directly connected to the first circuit board 19 by the second circuit board section 17.
The light source 15 is arranged on the upper side 19a of the first circuit board 19. The main irradiation direction a of the light L of the light source 15 is in the vertical direction. It is directed upwards. The light L is input through the light guide 10, in particular the end 12a of the vertical light guide section 12. In particular, the flexible circuit board 8 is connected to a first circuit board 19 adjacent to the light source 15.
Fig. 2 shows a further exemplary embodiment of the input device 1 in a schematic representation. Accordingly, the explanations and parts given in relation to fig. 1 are provided with corresponding reference numerals in fig. 2.
In contrast to fig. 1, three regions 4, 5 and 21 that can be backlit are shown here by way of example.
In fig. 3, only the one-piece component 18 with the cover 2 and the light guide 11 of fig. 1 is shown.
In fig. 4, the component 18 is shown in a perspective view looking onto the upper side 18 a. The vertical cross-sectional view in fig. 3 and thus in fig. 1 is formed along the cross-sectional line III-III in fig. 4.
In particular, the component 18 can be moved relative to the first printed circuit board 19. In particular, a movement in the x-direction and/or y-direction can occur here in a defined manner.
In fig. 1, 2 and 3, the cover 2 and the light guide 10 are hatched differently. In this way their respective geometries are specifically elucidated. Thus, in exemplary embodiments where these portions form a single-piece component 18, they cannot be considered as separate portions.

Claims (12)

1. An input device (1) for a motor vehicle, having a cover (2) with an input face (3) with at least one light source (15), and having a light guide (10) with which light (L) of the light source (15) can be guided to at least one region (4, 5, 6, 21) which can be backlit and is formed on the input face (3); and the input device (1) has a first circuit board (19), the light source (15) being arranged on the first circuit board (19),
it is characterized in that the preparation method is characterized in that,
in addition to the first circuit board (19), the input device (1) has a flexible circuit board (8), the flexible circuit board (8) being arranged between the light guide (10) and the first circuit board (19).
2. The input device (1) according to claim 1,
it is characterized in that the preparation method is characterized in that,
at least one sensor electrode (9) for sensing an input at the input face (3) is arranged on the flexible circuit board (8).
3. The input device (1) according to claim 2,
it is characterized in that the preparation method is characterized in that,
the sensor electrodes (9) are capacitive electrodes.
4. The input device (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the cover (2) and the circuit board (10) are embodied as a single-piece component (18).
5. The input device (1) according to claim 4,
it is characterized in that the preparation method is characterized in that,
the component (18) is an at least 2K component.
6. The input device (1) according to claim 5,
it is characterized in that the preparation method is characterized in that,
the cover (2) is a 1K component and/or the light guide (10) is a 2K component.
7. The input device (1) of any one of the preceding claims 4 to 6,
it is characterized in that the preparation method is characterized in that,
the component (18) is arranged to be movable relative to the first circuit board (19).
8. The input device (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the light guide (10) has an L-shape in vertical cross-section.
9. The input device (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the first light guide section (11) of the light guide (8) has a first portion (11a, 11c) of a first thickness (d2, d3) and at least one second portion (11b) of a second thickness (d2), the second thickness (d2) being smaller than the first thickness (d2, d3), wherein at least one structure (13, 14) reflecting light is particularly formed in the first portion (11a, 11 c).
10. The input device (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the flexible printed circuit (8) is provided with a first printed circuit section (16) parallel to the light guide (10) and/or the flexible printed circuit (8) is provided with a first printed circuit section (16) directly supported on the surface of the light guide (10).
11. The input device (1) according to claim 10,
it is characterized in that the preparation method is characterized in that,
the first circuit board section (16) is arranged spaced apart from the first light guide (19).
12. The input device (1) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the flexible circuit board (8) is directly connected to the first circuit board (19) by a second circuit board section (17) which is oriented perpendicularly with respect to the first light guide (19).
CN202011237335.7A 2019-11-07 2020-11-09 Input device for a motor vehicle with a specific arrangement of flexible printed circuit boards Active CN112783331B (en)

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DE102019130011.8 2019-11-07

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