CN217508739U - Touch device and household appliance - Google Patents

Abstract

The application discloses touch device and domestic appliance, touch device includes touch pad, main control board and one or more infrared transceiver module. The touch panel has a light-transmissive touch region. The main control board and the touch pad are arranged at intervals. Each infrared transceiver module includes infra-red transmitter, infrared receiver and light scattering piece, infra-red transmitter and infrared receiver all set up between touch pad and main control board, infra-red transmitter and infrared receiver all with main control board electric connection, infra-red transmitter and infrared receiver all set up towards the touch area, infra-red transmitter and infrared receiver interval set up, light scattering piece sets up between infra-red transmitter and touch pad, light scattering piece is used for dispersing the infrared light that infra-red transmitter sent. The diffused infrared light can enable more infrared light signals to be in contact with external objects and be reflected by the external objects, and the infrared receiver is favorable for receiving the infrared light signals, so that the sensitivity of the touch device is improved, and the practicability of the touch device is further improved.

Description

Touch device and household appliance

Technical Field

The application relates to the field of household appliances, in particular to a touch device and a household appliance.

Background

Along with the improvement of living standard of people, domestic appliances with different functions are generally applied to the life of people, and convenience is provided for the life of people. In order to operate the household appliance, an infrared touch device is generally used to control the household appliance. The infrared touch device is arranged in the touch pad and comprises an infrared transmitter and an infrared receiver. When a finger is close to the touch pad, infrared light emitted by the infrared emitter passes through the touch pad and is reflected by the finger, and the reflected infrared light is received by the infrared receiver, so that the function of the household appliance corresponding to the infrared touch device is triggered. However, the infrared touch device may not be sensitive during use.

SUMMERY OF THE UTILITY MODEL

The application provides a touch device and household appliance, infrared receiver in the infrared touch device of can being convenient for receives the infrared light signal that infrared emitter sent to improve household appliance's touch device's sensitivity.

In a first aspect, the present application provides a touch device, which includes a touch pad, a main control board, and one or more infrared transceiver modules. The touch panel has a light-transmissive touch region. The main control board and the touch pad are arranged at intervals. Each infrared transceiver module includes infra-red transmitter, infrared receiver and light scattering piece, infra-red transmitter and infrared receiver all set up between touch pad and main control board, infra-red transmitter and infrared receiver all with main control board electric connection, infra-red transmitter and infrared receiver all set up towards the touch area, infra-red transmitter and infrared receiver interval set up, light scattering piece sets up between infra-red transmitter and touch pad, light scattering piece is used for dispersing the infrared light that infra-red transmitter sent.

In some embodiments, the light diffuser comprises a concave lens or the light diffuser comprises a lens group having a negative focal length.

Based on the above embodiment, the concave lens or the lens group with the negative focal length has a diverging effect on the light, and the diverging infrared light signal can increase the contact area between the emitted infrared light signal and the touch pad, so that the emitted infrared light signal can be more projected into the touch area and can pass through the transparent touch area to contact with an external object, thereby increasing the convenience of the infrared receiving device for receiving the infrared light signal.

In some embodiments, the optical axis of the light diffuser passes through the touch area.

Based on the above embodiment, the divergence range of the light scattering member to the incident infrared light signal is centrosymmetric about the optical axis, and the optical axis of the light scattering member needs to pass through the touch area to ensure that the infrared light signal passing through the light scattering member can be transmitted to the touch area.

In some embodiments, the infrared transceiver module includes a support disposed between the touch pad and the main control board, and the light diffuser is disposed on the support.

Based on the above embodiment, the light scattering member is disposed on the support member, and the support member is disposed between the touch panel and the main control board, so that the position between the light scattering member and the infrared emitter is determined.

In some embodiments, the infrared transceiver module further includes a light converging element disposed between the infrared receiver and the touch panel for converging infrared light to be received by the infrared receiver.

Based on the above embodiment, the light converging piece is arranged between the infrared receiver and the touch pad and used for converging the reflected multiple infrared light signals, and meanwhile, the infrared receiver is located on a converging point so that the infrared receiver can receive the reflected infrared light signals conveniently.

In some embodiments, the light concentrator comprises a convex lens or a lens group having a positive focal length.

Based on the above embodiment, the convex lens or the lens group with the positive focal length has the convergence effect on the infrared light signals, so that the reflected multiple beams of infrared light signals can be converged through the lens group with the positive focal length, the converged light beams can be projected into the infrared receiver more accurately, and the sensitivity of the touch device is improved, so that the practicability of the touch device is improved.

In some embodiments, the infrared light that diverges past the light dispersion covers the touch area.

Based on the embodiment, the infrared light emitted by the infrared emitter and diffused by the light scattering part covers the touch area, and when an external object is close to the touch area or is in contact with the touch area, the infrared light can be reflected only by contacting any part in the touch area, so that the operation convenience of a user can be improved, and meanwhile, the effectiveness of contact with the touch area is ensured

In some embodiments, the infrared transceiver module further includes a light blocking element disposed on the main control board, and the light blocking element is located between the infrared transmitter and the infrared receiver to prevent infrared light emitted from the infrared transmitter from being directly received by the infrared receiver.

Based on the above embodiment, the light blocking element can enable the infrared receiver to only receive the infrared light signal reflected by the external object, so as to prevent the infrared light signal sent by the infrared transmitter from being directly received by the infrared receiver, thereby improving the accuracy of touch control of the touch device.

In some embodiments, the infrared light emitted by the infrared emitter is modulated infrared light.

Based on the above embodiment, the modulated infrared light can only receive the infrared light signal emitted by the corresponding infrared emitter to eliminate the infrared light signal of the external environment, thereby improving the accuracy of the control of the touch device

In some embodiments, the touch device includes a backlight module disposed between the touch pad and the main control board and connected to the main control board, the touch area includes a touch pattern and an infrared light-transmitting portion, the infrared light-transmitting portion corresponds to the touch pattern and is capable of transmitting infrared light, and light emitted from the backlight module can pass through the infrared light-transmitting portion to illuminate the touch pattern.

Based on the above embodiment, the light-transmitting portion corresponds to the touch pattern and is transparent to the infrared light signal, so that the infrared light signal passing through the light-transmitting portion contacts with an external object for reflection, and the reflected infrared light signal passes through the light-transmitting portion and is transmitted to the infrared receiver, thereby triggering the function of the household appliance corresponding to the touch area.

In a second aspect, the present application further provides a household appliance, which includes a household appliance body and the touch device described in any of the above embodiments, where the touch device is disposed on the household appliance body.

Based on the above embodiment, the household appliance is provided with the touch device, and the light scattering part is arranged between the infrared emitter and the touch pad and used for scattering infrared light emitted by the infrared emitter. The diffused infrared light signals can increase the contact area with the touch pad, increase the quantity of the infrared light signals passing through the touch area, enable more infrared light signals to be in contact with external objects and be reflected by the external objects, and are beneficial to the infrared receiver to receive the infrared light signals, so that the sensitivity of the touch device is improved, and the use performance of the household appliance is further improved.

According to the touch device, the infrared transmitter and the infrared receiver are arranged towards the touch area, and the infrared receiver and the infrared transmitter are arranged at intervals; the light scattering part is arranged between the infrared emitter and the touch pad and used for scattering infrared light emitted by the infrared emitter. The diffused infrared light signals can increase the contact area with the touch pad, increase the quantity of the infrared light signals passing through the touch area, enable more infrared light signals to be in contact with external objects and reflected by the external objects, and are beneficial to the infrared receiver to receive the infrared light signals, so that the sensitivity of the touch device is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or related technologies of the present application, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view illustrating an overall structure of a touch device according to an embodiment of the present disclosure;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic diagram of a touch panel according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a support member according to an embodiment of the present application;

FIG. 5 is an enlarged view of the structure at B in FIG. 3;

fig. 6 is a schematic overall structure diagram of a touch device (with a fixing plate) according to an embodiment of the present disclosure;

fig. 7 is a schematic overall structure diagram of a household appliance according to an embodiment of the present application.

Reference numerals:

100. a touch device;

10. a touch panel; 11. a touch area; 111. a touch pattern; 1111. a power key; 1112. a low-grade key; 1113. a middle shift key; 1114. a high-grade key; 1115. an on-off key; 1116. an illumination key; 112. a light-transmitting portion; 12. a light-shielding area; 13. plate surface;

20. a main control board;

30. an infrared emitter;

40. an infrared receiver;

50. a light-blocking element;

60. a backlight module;

70. a fixing plate; 710. a light-transmitting hole; 720. an accommodating groove;

80. a light diffuser; 90. a light converging member; 300. a support member; 310. a first frame body; 320. a second frame body; 321. mounting grooves;

200. a household appliance; 210. the household electrical appliance body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the related art, the infrared touch device includes a touch panel and a control circuit board, the touch panel and the control circuit board are disposed at an interval, the infrared touch device is disposed between the touch panel and the control circuit board, and the infrared touch device is mounted on the control circuit board and electrically connected to the control circuit board.

The infrared touch device comprises an infrared transmitter and an infrared receiver, when a finger approaches or touches the touch panel, infrared light emitted by the infrared transmitter penetrates through the touch panel, is projected to the finger and is reflected by the finger, and the infrared receiver receives a reflected infrared light signal, so that the infrared touch device triggers a corresponding function of the household appliance.

The emitting direction of the infrared emitter is perpendicular to the touch panel, infrared light emitted by the infrared emitter is perpendicularly projected to the finger and reflected by the finger, the infrared receiver can only receive part of infrared light reflected by the finger, and the infrared receiver can not timely receive the infrared light, so that the infrared touch device cannot timely trigger corresponding functions of the household appliance.

Referring to fig. 1 and fig. 2, in order to make the infrared receiver 40 in the touch device 100 more directly and rapidly receive the infrared light signal emitted by the infrared emitter 30, the sensitivity of the touch device is improved. In a first aspect, the present application provides a touch device 100, where the touch device 100 includes a touch panel 10, a main control panel 20, and one or more infrared transceiver modules. Each infrared transceiver module includes an infrared transmitter 30 and an infrared receiver 40.

The touch panel 10 may be provided on a housing of the home appliance as a part of the external appearance of the home appliance. The material of the touch panel 10 may be one or more of metal, ceramic, glass, and plastic, for example, when the material of the touch panel 10 is metal, stainless steel or aluminum alloy may be used. The overall shape of the touch panel 10 may be rectangular, circular, oval, racetrack, etc., and the touch panel 10 may also have some irregular shape, which is not specifically limited in this application.

In some embodiments, the touchpad 10 may be one or more. The number of the touch panels 10, the mounting positions on the home appliance can be set according to actual requirements.

Further, referring to fig. 3 in conjunction with fig. 1, according to different functional requirements of the household appliance, the touch panel 10 may be provided with a plurality of transparent touch areas 11 for different functional operation positions. The user may operate (e.g., touch or approach) the touch area 11 to enable the touch device 100 to trigger a corresponding function of the household appliance. Referring to fig. 1, the number of the touch areas 11 may be multiple, and the multiple touch areas 11 may be a power key 1111, a low-level key 1112, a middle-level key 1113, a high-level key 1114, an on-off key 1115, and an illumination key 1116 in sequence, and in some embodiments, the touch areas 11 may also include other function keys, which may be set according to specific requirements.

It is understood that the user's manipulation of the power key 1111 may control the home appliance to turn on or off the power; the user's operation of the low range key 1112 may cause the home appliance to run at low power; the household appliance can be operated at medium power by the user operating the middle-grade key 1113; the user's operation of the high-end key 1114 may cause the home appliance 200 to operate at high power; the user operates the on key 1115 to control the on or off of the household appliance; operation of the light key 1116 by a user may control the turning on or off of a light fixture within the appliance. In some specific embodiments, the type of the touch area 11 and the corresponding function on the touch panel 10 are not limited to the above functions, and may be set according to different requirements.

In some embodiments, the touch panel 10 may further include a display area (not shown), and the display area may be used to display operating parameters of the household appliance, such as operating mode, operating duration, operating power, and the like, and also display states of the household appliance, such as on or off state of a power supply, magnitude state of power, on or off state of the household appliance, on and off state of a lighting function, and the like.

Further, the main control board 20 may be a printed circuit board, a flexible circuit board or a rigid-flex board, and the main control board 20 may be laid with connection lines to connect with different electronic components. The main control board 20 is spaced apart from the touch pad 10, and a mounting space (not shown) is provided between the main control board 20 and the touch pad 10, and each infrared transceiver module is located in the mounting space, that is, each infrared transmitter 30 and each infrared receiver 40 are located in the mounting space.

The infrared emitter 30 is mounted on the main control board 20 and electrically connected to the main control board 20, and the main control board 20 can provide the infrared emitter 30 with electric power required for operation, so that the infrared emitter 30 emits an optical signal that can pass through the touch area 11.

Referring to fig. 2 in conjunction with fig. 1, the infrared emitter 30 is disposed toward the touch area 11, so that the emitted infrared light signal passes through the touch area 11 to contact an external object, the external object can reflect the infrared light signal, and the reflected infrared light signal can enter the touch panel 10. It should be noted that the external object may be a finger or other objects capable of blocking light, for example, the finger may contact the touch area 11 or be close to the touch pad 10, so that the infrared light can be reflected by the finger.

The light scattering member 80 is disposed between the infrared emitter 30 and the touch panel 10, and is used for scattering infrared light emitted from the infrared emitter 30, the scattered infrared light signal can increase a contact area with the touch panel 10, and increase an amount of the infrared light signal passing through the touch area 11, so that more infrared light signals are projected to an external object and reflected by the external object. Accordingly, the amount of reflected infrared light signal increases.

Referring to fig. 2 in conjunction with fig. 1, an infrared receiver 40 is also mounted on the main control board 20 and electrically connected to the main control board 20, and the main control board 20 can provide the infrared receiver 40 with power required for operation. The reflected infrared light signal can pass through the touch area 11 and be received by the infrared receiver 40 to trigger the home appliance function corresponding to the touch device 100. The added light scattering member 80 can scatter the infrared light emitted by the infrared emitter 30, so that different reflection angles are provided on an external object, and more infrared light is transmitted to the infrared receiver 40, so that the infrared receiver 40 can conveniently receive the reflected infrared light signal, the response speed of the touch device 100 is increased, and the sensitivity of the touch device 100 is increased.

Further, the light dispersion member 80 may include a concave lens, which is also called a negative ball lens, the middle of the lens is thin, the edge of the lens is thick, and the lens is concave, the concave lens has a dispersion effect on the infrared light, and the dispersed infrared light signal can increase the contact area with the touch panel 10, so that the emitted infrared light signal can be more projected into the touch area 11 and can pass through the transparent touch area 11 to contact with an external object.

In some embodiments, the light scattering element 80 may also include a lens group with a negative focal length, the lens group may be a lens group composed of a plurality of lenses, and the combined focal length of the entire lens group is the negative focal length, which has a scattering effect on the incident infrared light signal. The lens group is provided with a plurality of lenses, and by setting the surface type, focal length and tortuosity of each lens in the lens group, the divergence angle of the incident infrared light signal, the position projected onto the touch panel 10 and the projected area can be accurately set, so as to meet the requirements of the touch area 11 on different incident angles and incident coverage amounts of the infrared light signal.

In order to allow the infrared light signal passing through the light scattering member 80 to be transmitted to the touch area 11, the light scattering member 80 needs to have an optical axis passing through the touch area 11 in order to ensure that the infrared light signal passing through the light scattering member 80 can be transmitted to the touch area 11 according to the light scattering member 80 having a central symmetry with respect to the optical axis with respect to the divergence range of the incident infrared light signal.

In order to fix the light scattering member 80 to ensure the certainty of the position between the light scattering member 80 and the infrared emitter 30, please refer to fig. 4 in conjunction with fig. 2, the touch device 100 further includes a support 300, the support 300 is disposed between the touch panel 10 and the main control board 20, and one end of the support 300 is fixedly installed on the main control board 20 and the other end is fixed to the light scattering member 80.

Specifically, the supporting member 300 may include a first frame 310 and a second frame 320, the first frame 310 may be rod-shaped or plate-shaped, the first end of the first frame 310 may be connected to the main control board 20, and it should be noted that the connection between the first end of the first frame 310 and the main control board 20 may be clamping, screwing, or adhering, so as to ensure that the positions of the first frame 310 and the main control board 20 are stable. The second end of the first frame 310 is connected to the second frame 320, and the second frame 320 and the first frame 310 may be integrally formed to improve the overall stability of the supporting member 300; meanwhile, the second frame body 320 may also be connected to the first frame body 310 by means of clamping, screwing or bonding, so as to ensure the stability of connection therebetween. The second frame 320 may be disposed on the top of the first frame 310, such that the second frame 320 may be located above the ir emitter 30 and the ir receiver 40.

Referring to fig. 4, the second frame 320 is provided with a mounting groove 321, and the light emitting and diverging part 80 is placed in the mounting groove 321 to fix the light emitting and diverging part 80. The mounting groove 321 may be connected to a circumferential side of the light emitting member 80 to secure the second body 320 to the light emitting member 80, so that the position of the light emitting member 80 with respect to the infrared emitter 30 is determined. In some embodiments, the support 300 may also be supported by a structure or manner known to those skilled in the art, wherein the specific structure is not limited.

It should be noted that by adjusting the distance between the light dispersion member 80 and the infrared emitter 30, the optical axis of the light dispersion member 80 passes through the infrared emitter 30, and the focal point of the light dispersion member 80 intersects the emitting end of the infrared emitter 30, so that the infrared light signal emitted by the infrared emitter 30 can pass through the light dispersion member 80, facilitating the dispersion of the infrared light signal by the light dispersion member 80.

Further, referring to fig. 2, the touch device 100 further includes a light converging element 90, the light converging element 90 is disposed between the infrared receiver 40 and the touch panel 10 for converging the reflected infrared light signals, and the infrared receiver 40 is located at a converging point, so as to facilitate the infrared receiver 40 to receive the reflected infrared light signals.

It should be noted that the light concentrator 90 may be supported by a support structure to ensure the positional stability between the light concentrator 90 and the infrared receiver 40. In some embodiments, the support structure may be a structure or a manner known to those skilled in the art to support, wherein the specific structure is not limiting.

Further, the light converging member 90 may include a convex lens, which is also called a positive spherical lens, and the lens has a thick middle part, a thin edge and a convex shape, and the convex lens has a converging effect on light. The convex lens may converge the reflected plurality of infrared light signals such that the converged light beams are transmitted to the infrared receiver 40.

In some embodiments, the light converging element 90 may also include a lens group having a positive focal length, the lens group may be a lens group composed of a plurality of lenses, and the combined focal length of the entire lens group may be a positive focal length, which has a converging effect on the reflected infrared light signal. The lens group is provided with a plurality of lenses, and by setting the surface type, focal length and refractive power of each lens in the lens group, reflected multiple beams of infrared light signals can be converged through the lens group with a positive focal length, and the converged light beams can be projected into the infrared receiver 40 more accurately, so that the sensitivity of the touch device 100 is improved, and further the practicability of the touch device 100 is improved.

It should be noted that, by adjusting the distance between the light converging element 90 and the infrared emitter 30, the optical axis of the light converging element 90 passes through the infrared receiver 40, and the focal point of the light converging element 90 intersects with the receiving end of the infrared receiver 40, so that the reflected infrared light signal can be converged on the infrared receiver 40 more accurately, which is favorable for the infrared receiver 40 to receive the reflected infrared light signal.

In order to make the infrared light emitted by the infrared emitter 30 effectively contact with an external object, the infrared light emitted by the infrared emitter 30 needs to cover the touch area 11, and when the external object approaches the touch area 11 or contacts the touch area 11, the external object only contacts any position in the touch area 11, so that the infrared light can be reflected, the operation convenience of a user can be further improved, and meanwhile, the effectiveness of contact with the touch area 1111 is ensured.

In order to avoid crosstalk between the infrared light signal emitted from the infrared emitter 30 and the infrared light signal received by the infrared receiver 40, referring to fig. 2, a safety distance is usually set between the infrared emitter 30 and the infrared receiver 40, so that the infrared light signal emitted from the infrared emitter 30 and the reflected infrared light signal received by the infrared receiver 40 are independent from each other, and interference caused by too small distance between the two signals is avoided. In the embodiment of the present application, the distance between the infrared transmitter 30 and the infrared receiver 40 is typically 20mm ± 5mm in order to achieve better anti-interference effect.

In order to prevent the infrared light signal emitted by the infrared emitter 30 from crosstalk with the infrared light signal reflected by an external object, referring to fig. 2 in conjunction with fig. 1, the touch device 100 further includes a light blocking element 50, where the light blocking element 50 is disposed on the main control board 20 and located between the infrared emitter 30 and the infrared receiver 40, so that the infrared receiver 40 can only receive the reflected infrared light signal, and further the infrared light signal emitted by the infrared emitter 30 is prevented from being directly received by the infrared receiver 40, thereby improving the accuracy of the touch device 100.

In some embodiments, the light blocking element 50 may be a light blocking plate, and the light blocking plate may be a physical plate, and the light blocking plate stands between the ir emitter 30 and the ir receiver 40 and has a certain height. One end of the shading baffle is fixed on the main control board 20, the other end extends towards the direction far away from the main control board 20, the infrared transmitter 30 and the infrared receiver 40 are symmetrically distributed on two sides of the shading baffle, the shading baffle can isolate optical signals transmitted by the infrared transmitter 30 and optical signals reflected by an external object, and crosstalk between the transmitted optical signals and the reflected optical signals is avoided.

Further, the light blocking element 50 may also be an electronic device, and the electronic device is connected to the main control board 20 and disposed between the infrared emitter 30 and the infrared receiver 40. When an external object approaches or contacts the touch area 11, the controller on the main control board 20 may control the electronic device to turn the electronic device into black, so as to prevent the infrared light signal from passing through the electronic device, so as to isolate the light signal emitted by the infrared emitter 30 from the reflected infrared light signal, and prevent the infrared light signal emitted by the infrared emitter 30 from crosstalk with the reflected infrared light signal. In some embodiments, the main control board 20 may also control the electronic device to be in a black state all the time, or may be in a black state only when an external object is in contact with the touch area 11, and is in a light-transmitting state at other times.

The external infrared signal may cause the touch device 100 to malfunction, for example, an infrared signal from a television remote controller, an infrared signal from an air conditioner remote controller, an infrared signal from a lifting clothes hanger remote controller, etc., and the infrared receiver 40 in the touch device 100 may receive the infrared signal, so that the touch device 100 may malfunction. In order to prevent the touch device 100 from malfunctioning, the infrared light emitted by the infrared emitter 30 may be set to be modulated infrared light, that is, the infrared receiver 40 can only receive the infrared light signal emitted by the corresponding infrared emitter 30, so as to exhaust the infrared light signal of the external environment, thereby improving the accuracy of controlling the touch device 100.

In some embodiments, infrared transmitters 30 corresponding to different touch areas 11 may emit light signals at different frequencies, and accordingly, infrared receivers 40 corresponding to infrared transmitters 30 are used to receive light signals at different frequencies.

Specifically, an optical filter may be disposed on the optical path of the infrared receiver 40 to filter out optical signals outside a predetermined frequency. In use, even if the light emitted by the infrared emitter 30 passes through the adjacent touch area 11 after being reflected due to the reflection surface of an external object, etc., the light is not received by the adjacent infrared receiver 40, thereby avoiding false triggering, and simultaneously facilitating more dense arrangement of the touch areas 11, and under the condition of limited space, a plurality of touch areas 11 can be arranged to meet the multifunctional requirements of the household appliance 200.

In order to facilitate the identification of the positions of different touch areas 11 on the touch panel 10, please refer to fig. 5 in conjunction with fig. 3, a touch-transparent pattern 111 is disposed in the touch area 11, and the touch pattern 111 is used to indicate the positions of the touch areas 11. In the embodiment of the present application, the illustrated touch pattern 111 can be used to correspond to the power key 1111, the low-level key 1112, the middle-level key 1113, the high-level key 1114, the switch key 1115 and the illumination key 1116. It should be noted that, when the touch pattern 111 corresponds to different functions, it is necessary to enable the user to identify and determine the function corresponding to the touch pattern 111, and the function identifier can also be used as the touch pattern 111, so that the user can quickly identify the function.

Accordingly, on the one hand. The touch pattern 111 distinguishes the touch areas 11 with different functions, so as to identify the touch positions of different functions on the touch panel 10; on the other hand, the touch pattern 111 is simple, so that the appearance neatness and the aesthetic property of the touch device 100 are improved, and the use experience of the user is further improved.

Further, the touch area 11 includes a touch pattern 111 and an infrared-transmitting portion 112. The infrared transparent portion 112 is disposed corresponding to the touch pattern 111, and the infrared transparent portion 112 is capable of allowing an infrared light signal to pass therethrough, so that the infrared light signal passing through the infrared transparent portion 112 contacts with an external object for reflection, and the reflected infrared light passes through the infrared transparent portion 112 and is transmitted to the infrared receiver 40, so as to trigger a function corresponding to the touch area 11.

Referring to fig. 5, the touch pattern 111 may be a hollow area with a shape, and the hollow area is filled with glue, and the glue forms the infrared light-transmitting portion 112. When the touch pattern 111 is formed, the touch pattern 111 is first formed on the touch panel 10 by hollowing out, and then the infrared light-transmitting portion 112 is formed by filling glue into the hollow-out area. The infrared light-transmitting portion 112 is formed on the touch panel 10 by glue pouring, and is easy and convenient to process, and the touch area 11 can have good waterproof performance.

Referring to fig. 1, the touch panel 10 includes a touch area 11 and a light-shielding area 12, and the touch area 11 is an area for a user to perform a finger touch operation. The touch device 100 further includes a backlight module 60, the backlight module 60 is disposed between the touch panel 10 and the main control panel 20, the backlight module 60 is mounted on the main control panel 20 and electrically connected to the main control panel 20, light emitted from the backlight module 60 can pass through the infrared light-transmitting portion 112, and the light-shielding region 12 is located around the infrared light-transmitting portion 112, and the light-shielding region 12 cannot pass through light emitted from the backlight module 60. Thus, the touch pattern 111 can be displayed more clearly under the illumination of the backlight module 60, and the touch pattern 111 can be clearly contrasted with the black color of the peripheral light-shielding region 12, so that the user can quickly identify the touch pattern 111.

Further, the number of the backlight modules 60 may be equal to the number of the touch areas 11 and correspond to the positions of the touch areas 11 one by one, the backlight modules 60 may be light emitting diodes (leds), the backlight modules 60 may also emit visible light, and the light emitted by the backlight modules 60 passes through the light-transmitting portion 112 and then can be seen by a user to indicate the specific position and type of the touch area 11 triggered by the user.

In some embodiments, referring to fig. 6 in conjunction with fig. 1, the touch device 100 may further include a housing (not shown) for mounting and fixing the touch panel 10, the main control panel 20 and the fixing panel 70, wherein the housing can fix the positions of the touch panel 10, the main control panel 20 and the fixing panel 70 to improve the integrity of the touch panel 10, the main control panel 20 and the fixing panel 70.

The fixing plate 70 is installed in the housing and located between the touch panel 10 and the main control panel 20, and the fixing plate 70 is provided with the light holes 710 corresponding to the infrared emitters 30 and the infrared receivers 40, so that the infrared emitters 30 and the infrared receivers 40 corresponding to the adjacent touch areas 11 can be isolated, interference between the infrared emitters 30 and the infrared receivers 40 corresponding to the two adjacent touch areas 11 is avoided, and accuracy of transmitting and receiving infrared signals is improved.

Further, the main control board 20 is fixed to the touch panel 10 by the fixing board 70, so that the main control board 20 is isolated from the touch panel 10, and the insulating property between the main control board 20 and the touch panel 10 is improved.

In some embodiments, the fixing plate 70 is provided with a receiving groove (not shown) matching with the shape of the main control plate 20, and the main control plate 20 is placed in the receiving groove, so that the thickness space of the fixing plate 70 can be fully utilized by receiving and fixing the main control plate 20 in the receiving groove, which is beneficial to reducing the overall size and improving the safety performance of the main control plate 20.

In a second aspect, please refer to fig. 6, the present application provides a household electrical appliance 200, in which the household electrical appliance 200 includes a household electrical appliance body 210 and the touch device 100, the touch device 100 is disposed on the household electrical appliance body 210 to set different functional requirements of the household electrical appliance body 210, and specifically, each of the different touch areas 11 corresponds to a different function.

The position of the touch device 100 can be set according to the actual operation requirement and the function requirement, for example, the household appliance 200 is placed at a high position, and the touch device 100 can be arranged on the peripheral outer wall to facilitate the operation; the touch device 100 may be disposed on the outer wall of the top side of the small-sized home appliance 200, in which the home appliance 200 is placed at a lower position or on a table top, so as to facilitate operation; for the household appliance 200 with simpler functions, the number of functional keys is less, so that the smaller touch panel 10 can meet the requirement, and for the household appliance 200 with more functions, the larger touch panel 10 is needed; for a large household appliance 200 that needs to be operated at different positions, a plurality of touch pads 10 need to be provided to meet the control requirements of the user.

The household appliance 200 is provided with the touch device 100, so that the infrared receiver 40 in the infrared touch device 100 can better receive the optical signal sent by the infrared emitting end, and the sensitivity of the function key is further improved.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (11)

1. A touch device, comprising:

a touch panel having a light-transmissive touch region;

the main control board is arranged at intervals with the touch board; and a process for the preparation of a coating,

one or more infrared transceiver module, each infrared transceiver module includes infrared transmitter, infrared receiver and light dispersion, infrared transmitter with infrared receiver all set up in the touch pad with between the main control board, infrared transmitter with infrared receiver all with main control board electric connection, infrared transmitter with infrared receiver all moves towards the regional setting of touch, infrared transmitter with the infrared receiver interval sets up, light dispersion set up in infrared transmitter with between the touch pad, light dispersion is used for right the infrared light that infrared transmitter sent is dispersed.

2. Touch device according to claim 1, wherein the light scattering element comprises a concave lens or the light scattering element comprises a lens group with a negative focal length.

3. The touch device of claim 2, wherein an optical axis of the light diffuser passes through the touch area.

4. The touch device of claim 1, wherein the infrared transceiver module comprises a support disposed between the touch pad and the main control board, and the light diffuser is disposed on the support.

5. The touch device of claim 1, wherein the infrared transceiver module further comprises a light converging element disposed between the infrared receiver and the touch pad for converging infrared light to be received by the infrared receiver.

6. The touch device of claim 5, wherein the light concentrator comprises a convex lens or a lens group with a positive focal length.

7. The touch device of claim 1, wherein the infrared light that diverges past the light dispersion covers the touch area.

8. The touch device of claim 1, wherein the infrared transceiver module further comprises a light blocking element disposed on the main control board, and the light blocking element is located between the infrared transmitter and the infrared receiver to prevent infrared light emitted from the infrared transmitter from being directly received by the infrared receiver.

9. The touch device of claim 8, wherein the infrared emitter emits infrared light that is modulated.

10. The touch device of any one of claims 1-9, wherein the touch device comprises a backlight module, the backlight module is disposed between the touch pad and the main control board and connected to the main control board, the touch area comprises a touch pattern and an ir-transparent portion, the ir-transparent portion corresponds to the touch pattern and is transparent to ir light, and light emitted from the backlight module can pass through the ir-transparent portion to illuminate the touch pattern.

11. A household appliance, comprising a household appliance body and the touch device of any one of claims 1 to 10, wherein the touch device is disposed on the household appliance body.

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