CN217508737U - Touch device and household appliance - Google Patents

Abstract

The application discloses touch device and domestic appliance, touch device includes main control board, touch pad and a set of or multiunit infrared transceiver module. The main control board and the touch pad are arranged at intervals, and the touch pad is provided with a light-transmitting touch area. The infrared receiving and transmitting module comprises an infrared transmitter and an infrared receiver, the infrared transmitter is arranged between the main control board and the touch pad and is electrically connected with the main control board, and the infrared transmitter is arranged towards the touch area; the infrared receiver is arranged between the main control board and the touch pad and is electrically connected with the main control board, the infrared receiver is arranged towards the touch area, and the infrared receiver and the infrared transmitter are arranged at intervals. For each group of infrared transceiver modules, at least one of the infrared transmitter and the infrared receiver is obliquely arranged relative to the touch panel towards the other. The device can make the infrared light signal of infrared transmitter transmission more directly and be received by infrared receiver rapidly, improves infrared receiver's reaction rate, and then improves touch device's sensitivity.

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, household appliances with different functions are generally applied to the life of people, and convenience is provided for the life of people. For the convenience of the operation of 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 the 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 corresponding function of 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 domestic appliance can make infrared receiver among the infrared touch device comparatively directly and receive the infrared light signal that infrared emitter sent rapidly to improve touch device's sensitivity.

In a first aspect, the present application provides a touch device, including a main control board, a touch pad, and one or more sets of infrared transceiver modules;

the main control board and the touch pad are arranged at intervals, and the touch pad is provided with a light-transmitting touch area;

the infrared receiving and transmitting module comprises an infrared transmitter and an infrared receiver, the infrared transmitter is arranged between the main control board and the touch board and is electrically connected with the main control board, and the infrared transmitter is arranged towards the touch area; the infrared receiver is arranged between the main control board and the touch board and is electrically connected with the main control board, the infrared receiver is arranged towards the touch area, and the infrared receiver and the infrared transmitter are arranged at intervals;

for each group of infrared transceiver modules, at least one of the infrared transmitter and the infrared receiver is obliquely arranged relative to the touch panel towards the other.

In some embodiments, the distance between the main control board and the touch board is greater than or equal to 10mm and less than or equal to 20 mm.

Based on the embodiment, the infrared receiver and the infrared transmitter are arranged at intervals, the distance between the main control board and the touch panel is larger than or equal to 10mm and smaller than or equal to 20mm, at least one of the infrared transmitter and the infrared receiver is obliquely arranged relative to the other one of the touch panel, so that the infrared light emitted by the infrared transmitter is ensured to be received by the infrared receiver within the range limited by the main control board and the touch panel, and the touch device triggers the function of the corresponding household appliance. Further, the installation space on the home appliance can be reduced by limiting the distance between the main control panel and the touch panel.

In some embodiments, the angle of inclination of the infrared emitter to the infrared receiver with respect to the touch panel is equal to or greater than 55 degrees and equal to or less than 65 degrees, and/or the angle of inclination of the infrared receiver to the infrared emitter with respect to the touch panel is equal to or greater than 55 degrees and equal to or less than 65 degrees.

Based on the above embodiment, the angles of the infrared emitter and the infrared receiver are set to change the emitting direction and the receiving direction of the infrared light, so that the infrared light reflected by an external object can be received by the infrared receiver more directly and rapidly, and the sensitivity of the touch device is further improved.

In some embodiments, the distance between the infrared emitter and the infrared receiver is greater than or equal to 15mm and less than or equal to 25 mm.

Based on the above embodiment, under the condition of the limitation of the distance between the infrared transmitter and the infrared receiver, at least one of the infrared transmitter and the infrared receiver is inclined towards the other relative to the touch pad, so that the infrared receiver can directly and rapidly receive the infrared signal, and the sensitivity of the touch device is further improved.

In some embodiments, a touch pattern is disposed in the touch area, and the touch pattern is used to indicate a position of the touch area.

Based on the above embodiment, the touch pattern is disposed on the touch pad, so that a user can conveniently identify a touch area on the touch pad, and then the user can control the touch device.

In some embodiments, the touch pattern is transparent.

Based on the above embodiment, the touch pattern can transmit the infrared light through the touch area and project the infrared light to the external object, the infrared light is reflected by the external object, and the reflected infrared light can be received by the infrared receiver.

In some embodiments, the touch device further includes a backlight module disposed between the touch pad and the main control board, and light emitted from the backlight module can pass through the touch pattern to illuminate the touch pattern.

Based on the above embodiment, the light emitted by the backlight module can penetrate through the touch pattern, so that the user can quickly identify the touch pattern.

In some embodiments, the touch pattern is provided with a hollow area, and the hollow area is filled with glue to form an infrared light-transmitting portion for transmitting infrared light.

Based on the above embodiment, the hollowed-out area can be set to be an infrared light-transmitting portion for infrared light to pass through, and the touch area can have good waterproof performance.

In some embodiments, the touch panel further has a light-shielding region located at a peripheral side of the touch pattern.

Based on the above embodiment, the light-shielding region is opaque, and the touch pattern can transmit infrared light. The touch pattern is clearly displayed under the irradiation of the backlight module, and forms a clear contrast with the black of the peripheral shading area, so that a user can quickly identify the touch pattern.

In some embodiments, an infrared light-transmitting portion is further disposed in the touch area, and the infrared light-transmitting portion corresponds to the touch pattern and is transparent to infrared light.

Based on the above embodiment, the touch pattern is displayed by transmitting the infrared light through the infrared light-transmitting portion, so that the user can conveniently identify the touch area, and the user can conveniently operate 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 as described in any of the above embodiments, wherein the touch device is disposed on the household appliance body.

Based on the above embodiment, the household appliance is provided with the touch device, at least one of the infrared transmitter and the infrared receiver is inclined towards the other relative to the main control board, so that the infrared receiver in the infrared touch device can directly and rapidly receive the infrared signal sent by the infrared transmitter, the sensitivity of the function keys of the household appliance is improved, and the practicability of the household appliance is further improved.

The embodiment of the application provides a touch device, and at least one of infrared transmitter and infrared receiver sets up to another slope for the main control board, does benefit to the infrared light signal of infrared transmitter transmission and through the reflection of external object, can make infrared receiver comparatively directly and receive the infrared light signal of reflection rapidly, and then improves domestic appliance's touch device's sensitivity.

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 overall structure diagram of a touch device according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1 at A;

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

FIG. 4 is a schematic diagram of another angle of the touch pad according to an embodiment of the present application

FIG. 5 is a cross-sectional view taken along the line C-C of FIG. 4;

FIG. 6 is a simplified block diagram of the structural relationship at D in FIG. 5;

fig. 7 is a schematic view of an overall structure of a touch device in another angle according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of the structure at D in FIG. 5;

FIG. 9 is a schematic view of the structure at B in FIG. 3;

FIG. 10 is a schematic view of an overall structure of a touch device (with a fixing plate) according to an embodiment of the present disclosure;

fig. 11 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;

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 clearly understood, the present application is further described in 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 emitter and an infrared receiver, when a finger approaches or touches the touch panel, infrared light emitted by the infrared emitter is projected to the finger, the infrared light is reflected by the finger, the infrared receiver receives a reflected infrared light signal, and then the infrared touch device triggers a corresponding household appliance function.

In the related art, the emitting direction of the infrared emitter is perpendicular to the touch panel, and when infrared light emitted by the infrared emitter is vertically projected to a finger, the infrared receiver may not receive the infrared light reflected by the finger, or the infrared receiver may only receive a small portion of the infrared light reflected by the finger, so that the infrared touch device is insensitive, and even cannot trigger a corresponding function in time.

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 function keys of the household appliance 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 sets of infrared transceiver modules, and each set of infrared transceiver modules 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 touch panel 10 may be made of one or more of metal, ceramic, glass, and plastic, for example, when the touch panel 10 is made of 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 also be one or more. The position, number, etc. of the touch pads may be set according to actual requirements.

Further, 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 position requirements.

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 and fig. 3, the number of the touch areas 11 may be multiple, and the multiple touch areas 11 may sequentially correspond to the power key 1111, the low-level key 1112, the medium-level key 1113, the high-level key 1114, the on-off key 1115, the illumination key 1116, and the like, and in some embodiments, the touch areas 11 may also be other function keys, which may be set according to specific requirements.

It can be understood that, when the user operates the power key 1111, the household appliance can be controlled to be powered on or powered off; the user operates the low-level key 1112, so that the household appliance can be operated at low power; the user operates the middle-grade key 1113 to enable the household appliance to run at the middle power; the user operates the high-grade key 1114 to enable the household appliance to run at high power; a user operates an on key 1115 to control the on or off of the household appliance; the user operates the light key 1116 to control the on/off of the light fixture in the home appliance. In some specific embodiments, the type of the touch area 11 on the touch panel 10 and the corresponding function are not limited, 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.

Referring to fig. 1 and 2, the main control board 20 and the touch panel 10 are spaced apart from each other, 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 for connecting different electronic components. A mounting space (not shown) is formed between the main control board 20 and the touch panel 10, and each set of infrared transceiver modules 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 installed on the main control board 20 and electrically connected to the main control board 20, and the main control board 20 can provide electric power required for the operation of the infrared emitter 30, so that the infrared emitter 30 emits an optical signal that can pass through the touch area 11.

Referring to fig. 1 and 2, the infrared emitter 30 may be disposed toward the touch area 11, so that the emitted infrared light signal passes through the touch area 11 and is projected onto an external object to be reflected by the external object, and the reflected infrared light signal may be received by the infrared receiver 40 after passing through the touch pad 10. It should be noted that the external object may be a finger or other objects capable of shielding light, for example, when the finger is in contact with the touch area 11 or the finger is close to the touch area 11, the infrared light signal may be projected to the finger, so that the infrared light signal is reflected.

The infrared receiver 40 is also installed 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 infrared light signal emitted by the infrared emitter 30 passes through the touch area 11 and is projected to an external object, the external object reflects the infrared light signal, the reflected infrared light signal passes through the touch pad 10, and the infrared receiver 40 receives the emitted infrared light signal, so as to trigger a function of the household appliance corresponding to the touch device 100.

To avoid crosstalk between the infrared light signal emitted by the infrared emitter 30 and the infrared light signal received by the infrared receiver 40, please refer to fig. 4 to 6, fig. 4 is a schematic view of an overall structure of the touch device 100 at another angle;

FIG. 5 is a cross-sectional view taken along the line C-C of FIG. 4; fig. 6 is a simplified structural diagram of the structural relationship at D in fig. 5 to show the positional relationship among the structures in the touch device 100. Specifically, P is the position of the ir emitter 30, Q is the position of the ir receiver 40, O is the position of an external object, and W is the middle position between the ir emitter 30 and the ir receiver 40. A safety distance PQ is usually provided 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 an excessively small distance between the two is avoided. In the embodiment of the present application, the safety distance PQ between the ir transmitter 30 and the ir receiver 40 is typically 20mm ± 5mm in order to achieve better anti-interference effect.

The infrared light signal emitted from the infrared emitter 30 may pass through the touch area 11, be projected to an external object, be reflected by the external object, and the reflected infrared light signal may pass through the touch area 11 to reach the infrared receiver 40, and the infrared emitter 30 may face the touch area 11 of the touch panel 10 and emit the infrared light signal to a direction in which the infrared receiver 40 is inclined, and the infrared receiver 40 corresponding to the infrared emitter 30 is perpendicularly oriented to the touch panel 10. The infrared emitters 30 are obliquely disposed, and the infrared emitters 30 may have an acute angle phi with respect to the touch panel 10, i.e., the infrared emitters 30 are inclined at an angle phi with respect to the touch panel 10, and the emitting directions of the infrared emitters 30 may have an acute angle phi with respect to the touch panel 10.

Referring to fig. 6, when an external object approaches or contacts the touch area 11, the infrared emitter 30 emits an infrared signal at a certain inclination angle, the infrared signal passes through the touch area 11, is projected to the external object at an incident angle α, is reflected by the external object at an exit angle γ, and the reflected infrared signal is irradiated into the touch panel 10. The infrared light signal emitted by the infrared emitter 30 has a certain incident angle α, and the reflected infrared light also has a certain exit angle γ according to the principle of light reflection, so that the infrared receiver 40 spaced apart from the infrared emitter 30 can receive more infrared light signals under the condition of having both the certain incident angle α and the exit angle γ which are acute angles.

In some embodiments, the infrared receiver 40 may also be tilted at an angle toward the touch area 11, while the infrared transmitter 30 is oriented perpendicular to the touch area 11. The infrared receiver 40 is obliquely disposed, and the infrared receiver 40 may have an acute angle with the touch panel 10. The reflected infrared light signal has a certain acute exit angle γ, which is beneficial for the infrared receiver 40 to receive the reflected infrared light signal, thereby improving the response sensitivity of the touch device 100.

In some embodiments, referring to fig. 1 and fig. 2, the infrared transmitter 30 may be disposed opposite to the infrared receiver 40, and the infrared signal emitted by the infrared transmitter 30 passes through the touch area 11, is projected to the external object at the incident angle α, and is reflected by the external object. The angle of incidence α may be complementary to the angle of inclination φ of the infrared emitter 30; the incident infrared light signal is reflected by an external object, the reflected infrared light signal is emitted at a certain exit angle γ, the exit angle γ is complementary to the inclination angle of the infrared receiver 40, and the light signal emitted by the infrared emitter 30 can be directly received by the infrared receiver 40, so that the sensitivity of the touch device 100 is improved.

Further, referring to fig. 6, either one of the infrared transmitter 30 and the infrared receiver 40 may be disposed to be inclined toward the other with respect to the touch panel 10. Specifically, when the infrared emitter 30 is tilted toward the infrared receiver 40, the infrared emitter 30 emits infrared light at a certain incident angle α, the infrared light penetrates through the touch area 11, is projected to an external object, is reflected by the external object, and the reflected infrared light is irradiated into the touch panel 10. The infrared light signal emitted by the infrared emitter 30 has a certain incident angle α, and the reflected infrared light also has a certain exit angle γ according to the principle of light reflection, which is beneficial for the infrared receiver 40 arranged at an interval with the infrared emitter 30 to receive the reflected infrared light signal.

In order to miniaturize the touch device 100 to save the installation space on the household appliance, referring to fig. 4 to 6, the distance between the touch panel 10 and the main control panel 20 needs to be limited. In the embodiment of the present application, the touch panel 20 has the plate surface 13 facing the main control panel 10, the distance OW between the main control panel 20 and the plate surface 13 of the touch panel 10 is usually limited to a range of 15mm ± 5mm, the distance PQ between the infrared emitter 30 and the infrared receiver 40 is usually set to a range of 20mm ± 5mm, and W is the midpoint of PQ, and as can be seen from fig. 6, the infrared emitter 30 has an angle Φ between the infrared light emitting direction and the plate surface 13, tan Φ — tan ═ OPW — OW/PW — 1.5, and ═ OPW — 60 degrees. When the infrared emitter 30 is inclined toward the infrared receiver 40 and the infrared receiver 40 is vertically oriented to the touch panel 10, an included angle between the emitting direction of the infrared emitter 30 and the panel surface 13 may be limited to a range of 55 degrees or more and 65 degrees or less; when the infrared receiver 40 is inclined toward the infrared emitter 30 and the infrared emitter 30 is vertically oriented to the touch panel 10, an included angle between a light receiving direction of the infrared receiver 40 and the panel surface 13 may be limited to be greater than or equal to 55 degrees and less than or equal to 35 degrees.

Further, when the infrared emitter 30 and the infrared receiver 40 are disposed opposite to each other, an included angle between the emission direction of the infrared emitter 30 and the board surface 13 may be limited within a range of 55 degrees or more and 65 degrees or less, and an included angle between the light receiving direction of the infrared receiver 40 and the board surface 13 may be limited within a range of 55 degrees or more and 65 degrees or less. By setting the angles, the response speed of the infrared receiver 40 can be increased, so as to improve the sensitivity of the touch device 100.

In order to prevent the infrared light signal emitted by the infrared emitter 30 from being interfered with the infrared light signal reflected by the external object, referring to fig. 1 and 2, the touch device 100 further includes a light blocking element 50, 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 as to isolate the infrared light signal emitted by the infrared emitter 30 from the optical signal channel between the reflected infrared light signals received by the infrared receiver 40, so that the infrared receiver 40 only receives the reflected infrared light signal, thereby preventing the infrared light signal emitted by the infrared emitter 30 from being directly received by the infrared receiver 40, and improving the accuracy of the touch device 100.

In some embodiments, the light blocking element 50 may be a light blocking plate, which 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, and in the embodiment of the present invention, the height of the light blocking element 50 is usually 10mm ± 2mm due to the limitation of the distance between the touch panel 10 and the panel surface 13 of the main control panel 20. One end of the light-shielding baffle is fixed on the main control board 20, the other end extends in the direction far away from the main control board 20, and the infrared transmitter 30 and the infrared receiver 40 are respectively arranged on two sides of the light-shielding baffle, so that optical signals transmitted by the infrared transmitter 30 and optical signals transmitted by the infrared receiver are isolated, and crosstalk between the transmitted infrared signals and reflected infrared signals is avoided.

The infrared light signal emitted by the infrared emitter 30 passes through the touch area 11 and is projected to an external object, and the external object reflects the infrared light signal. In the case where the angle between the emitted light emitted from the infrared emitter 30 and the reflected light reflected from the external object is small, the emitted light and the reflected light may contact the top of the light blocking member 50, which may affect the transmission of the emitted light and the reflected light. Then, the top of the light-blocking element 50 needs to be spaced from the panel surface 13 of the touch panel 10 to provide a sufficient light path space to avoid the light-blocking element 50 from affecting the emitted light and the reflected light; and near the main control board 20, the bottom of the light blocking element 50 isolates the infrared light signal emitted from the infrared emitter 30 from the reflected infrared light signal, so as to avoid crosstalk.

Further, referring to fig. 6 and 8, the infrared receiver 40 and the infrared transmitter 30 are symmetrically disposed about the light blocking element 50, and since the touch device 100 utilizes the reflection principle of light, the incident angle α and the emitting angle γ of the light signal projected to the external object through the touch panel 10 are equal. When the infrared receiver 40 and the infrared transmitter 30 are symmetrical with respect to the light blocking element 50, it is equivalent to that the infrared transmitter 30 is located on an extension line of the transmitted light, and the infrared receiver 40 is located on an extension line of the reflected light, and according to the fact that the incident angle α is equal to the exit angle γ, it is beneficial for the light transmitted by the infrared transmitter 30 to directly enter the infrared receiver 40 through reflection, so that the reaction speed of the infrared receiver 40 is increased, and the sensitivity of the touch device 100 is further increased.

In order to facilitate the identification of the positions of the different touch areas 11 on the touch panel 10, please refer to fig. 9 in conjunction with fig. 3, a light-transmissive touch pattern 111 is disposed in the touch area 11, and the touch pattern 111 is used for indicating the positions of the touch areas 11. In the embodiment of the present application, please refer to fig. 3, the touch pattern 111 shown in the figure 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, the illumination key 1116, and the like. 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.

As such, on one hand, the distinction of the touch areas 11 of different functions by the touch pattern 111 facilitates the identification of 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, referring to fig. 1 to 3, the touch area 11 includes a touch pattern 111 for transmitting the infrared light signal, so that the infrared light signal passing through the infrared light transmitting portion 112 is projected to an external object and reflected by the external object, and the reflected infrared light passes through the touch pattern 111 and is transmitted to the infrared receiver 40, so as to trigger a function of the household appliance corresponding to the touch area 11.

Further, the touch pattern 111 is a hollow area with a certain pattern shape, and the hollow area is filled with glue, and the glue is filled into the hollow area to form an infrared light-transmitting portion 112 through which light can pass. When the touch pattern 111 is formed, a hollow area of the touch pattern 111 is first formed on the touch panel 10 by hollowing, and then glue is injected into the hollow area to form the infrared light-transmitting portion 112. 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.

The touch device 100 further includes a backlight module 12, 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, and light emitted from the backlight module 60 can penetrate through the infrared light-transmitting portion 112. The touch panel 10 has a touch region 11 and a light shielding region 12, the touch region 11 is a region for a user's finger to operate, and the light shielding region 12 is located on the peripheral side of the infrared transmitting portion 112 and does not allow light emitted from the backlight unit 60 to pass therethrough. Thus, the touch pattern 111 can be clearly displayed under the irradiation of the backlight module 60, and is 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, referring to fig. 1, 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 emit visible light, and the light emitted by the backlight modules 60 passes through the light-transmitting portions 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. 10, the touch device 100 may further include a housing (not shown) for installing and fixing the touch panel 10 and the main control board 20, and a fixing plate 70 for fixing the positions of the touch panel 10 and the main control board 20, so as to improve the integrity of the touch panel 10 and the main control board 20.

The fixing plate 70 is installed in the housing and located between the touch pad 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, and the interference between the infrared emitters 30 and the infrared receivers 40 corresponding to the two adjacent touch areas 11 is avoided, so as to improve the accuracy of transmitting and receiving infrared light signals.

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 an accommodating groove 720 matched with the shape of the main control plate 20, the main control plate 20 is placed in the accommodating groove 720, and the main control plate 20 is accommodated and fixed in the accommodating groove 720, so that the thickness space of the fixing plate 70 can be fully utilized, the overall size can be reduced, and the safety performance of the main control plate 20 is better.

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, due to the arrangement of the optical filter, even if the light emitted by the infrared emitter 30 passes through the adjacent touch area 11 after being reflected due to the reflection of the external environment and the like, the light is not received by the adjacent infrared receiver 40, so that false triggering is avoided, meanwhile, the touch area 11 is favorably and more densely arranged, and under the condition of limited space, a plurality of touch areas 11 can be arranged to meet the multifunctional requirement of the household appliance.

In a second aspect, please refer to fig. 10, which provides a household electrical appliance 200, the household electrical appliance includes a household electrical appliance body 210 and the touch device 100, wherein 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 is set to a higher position and can be set on the peripheral outer wall for convenient operation; the household appliance is arranged at a lower position or a small household appliance placed on a table top can be arranged on the outer wall of the top side so as to be convenient to operate; for household appliances with simpler functions, the number of functional keys is less, the smaller touch panel 10 can meet the requirement, and for more functions, the larger touch panel 10 is needed; for a large household appliance which needs to be operated at different positions, a plurality of touch pads 10 need to be arranged to meet the control requirements at different positions.

The household appliance is provided with the touch device, so that the infrared light signal emitted by the infrared emitter 30 can be directly and rapidly received by the infrared receiver 40, the response speed of the infrared receiver 40 is increased, and the sensitivity of the touch device 100 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 (10)

1. A touch device, comprising:

a main control board;

the main control panel and the touch panel are arranged at intervals, and the touch panel is provided with a light-transmitting touch area;

the infrared receiving and transmitting modules comprise infrared transmitters and infrared receivers, the infrared transmitters are arranged between the main control board and the touch pad and are electrically connected with the main control board, and the infrared transmitters are arranged towards the touch area; the infrared receiver is arranged between the main control board and the touch pad and is electrically connected with the main control board, the infrared receiver is arranged towards the touch area, and the infrared receiver and the infrared transmitter are arranged at intervals; and a process for the preparation of a coating,

for each set of the infrared transceiver modules, at least one of the infrared transmitter and the infrared receiver is arranged obliquely to the other with respect to the touch panel.

2. The touch device of claim 1, wherein a distance between the main control board and the touch pad is greater than or equal to 10mm and less than or equal to 20 mm.

3. The touch device according to claim 2, wherein the infrared transmitter is inclined at an angle of 55 degrees or more and 65 degrees or less with respect to the touch panel to the infrared receiver, and/or the infrared receiver is inclined at an angle of 55 degrees or more and 65 degrees or less with respect to the touch panel to the infrared transmitter.

4. The touch device of claim 1, wherein a distance between the infrared emitter and the infrared receiver is greater than or equal to 15mm and less than or equal to 25 mm.

5. The touch device of claim 1, wherein a touch pattern is disposed in the touch area, and the touch pattern is used to indicate a position of the touch area.

6. The touch device of claim 5, wherein the touch pattern is transparent.

7. The touch device of claim 6, further comprising a backlight module disposed between the touch panel and the main control panel, wherein light emitted from the backlight module can pass through the touch pattern to illuminate the touch pattern.

8. The touch device of claim 7, wherein the touch pattern is provided with a hollow area, and the hollow area is filled with glue to form an infrared light-transmitting portion for transmitting infrared light.

9. The touch device according to claim 5, wherein the touch panel further has a light-shielding region located on a peripheral side of the touch pattern.

10. A household appliance, comprising a household appliance body and the touch device as claimed in any one of claims 1 to 9, wherein the touch device is disposed on the household appliance body.

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