Capacitive touch key device and medical equipment

Abstract

The embodiment of the utility model provides a capacitive touch key device and medical equipment. The capacitive touch key device comprises a touch panel, a touch screen and a touch screen, wherein a key icon is arranged on the touch panel; the capacitive key assembly is connected to the touch panel, induction pieces in one-to-one correspondence with the key icons are arranged on the capacitive key assembly, each induction piece comprises a capacitor, and the capacitance value of each capacitor changes when the corresponding key icon is touched; and a controller electrically connected to the capacitor to detect a change in the capacitance value. According to the capacitive touch key device provided by the embodiment of the utility model, the function of the touch key can be realized without arranging a capacitive touch panel, so that the cost is lower. On the basis of the capacitive touch key device, different numbers of key icons can be arranged on the capacitive touch key device according to requirements, and the key icons can be arranged at any proper position, so that the capacitive touch key device is relatively high in degree of freedom and relatively good in applicability.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a capacitive touch button device and a medical device having the same. Background Technology

[0002] For ease of use, some medical devices are portable, such as portable ultrasound devices. Portable ultrasound devices often need to be transported to different application scenarios. Especially in harsh environments such as major disasters, these portable ultrasound devices can improve examination efficiency, thereby saving time and offering significant advantages.

[0003] Portable ultrasound devices typically include a touchscreen device. The touchscreen device comprises a touchscreen panel and a capacitive touch panel located below it. Users can operate the device using their fingers or other objects on the touchscreen panel.

[0004] However, users can only operate within the size range of the capacitive touch panel. Operating outside this range requires the redesign and development of a larger capacitive touch panel, which is extremely expensive. This is especially problematic for portable ultrasound devices, which are frequently used in different scenarios, necessitating the temporary configuration of different buttons. Redesigning the capacitive touch panel each time would make the cost of portable ultrasound devices prohibitively high, a situation difficult for users to accept. Utility Model Content

[0005] To at least partially address the problems existing in the prior art, according to one aspect of the present invention, a capacitive touch button device is provided. The capacitive touch button device includes: a touch panel with button icons disposed thereon; a capacitive button assembly connected to the touch panel, the capacitive button assembly having sensors corresponding one-to-one with the button icons, the sensors including capacitors, the capacitance value of which changes when the corresponding button icon is touched; and a controller electrically connected to the capacitors to detect changes in capacitance value.

[0006] For example, the touch panel is constructed as a light-transmitting touch panel, and the sensor also includes an illumination group that corresponds one-to-one with the capacitor and is used to emit light toward its corresponding button icon. The controller is also electrically connected to the illumination group and is used to control the corresponding illumination group to emit light when the capacitance value of the capacitor changes.

[0007] For example, the capacitive button assembly is also provided with a light-shielding member spaced between adjacent sensing elements.

[0008] For example, the capacitive button assembly includes a capacitive button board and a light guide plate connected between the capacitive button board and the touch panel. Both the capacitor and the lighting group are disposed on the capacitive button board. The light guide plate is provided with clearance holes and optical reflectors located on one side of the clearance holes. Each optical reflector is located on the back side of its corresponding button icon and is provided with multiple optical reflective points for reflecting light toward its corresponding button icon. Each lighting group extends into the clearance holes and is used to emit light toward its corresponding optical reflector.

[0009] For example, multiple optical reflective points of the optical reflector are gradually and sparsely arranged along the direction toward their corresponding lighting group.

[0010] For example, the capacitive button assembly also includes a diffuser sheet connected between the light guide plate and the touch panel.

[0011] For example, the capacitive button assembly also includes a reflective film connected between the light guide plate and the capacitive button board.

[0012] For example, each lighting group includes multiple lights for emitting different colors of light, and the controller controls at least one light in its corresponding lighting group to emit light when the capacitance value of the capacitor changes.

[0013] For example, the capacitive touch button device also includes a base, and the capacitive button assembly is further provided with a grounding conductive element connected to the base.

[0014] According to another aspect of this utility model, a medical device is also provided. The medical device includes any of the capacitive touch button devices described above.

[0015] For example, the medical device also includes a touch screen device, which includes a touch screen panel, the touch screen panel and the touch screen panel being constructed as a single molded part.

[0016] The capacitive touch button device of this embodiment achieves touch button functionality without requiring a capacitive touch panel, thus reducing cost. Based on this, the capacitive touch button device can be configured with varying numbers of button icons, which can be placed in any suitable location, offering high flexibility and good applicability. Furthermore, the capacitive touch button device has a simple structure, is easy to install, and is functionally reliable.

[0017] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0018] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0020] Figure 1 An exploded view of a portion of the structure of a medical device according to an exemplary embodiment of the present invention;

[0021] Figure 2 for Figure 1 A perspective view of the capacitive button assembly shown in the image;

[0022] Figure 3 for Figure 2 The top view of the capacitive button assembly shown in the image;

[0023] Figure 4 for Figure 2 A cross-sectional view of the capacitive button assembly shown in the figure;

[0024] Figure 5 for Figure 2 An exploded view of the capacitive button assembly shown in the figure; and

[0025] Figure 6 for Figure 5 The diagram shows the illumination of the capacitive button assembly.

[0026] The above figures include the following reference numerals:

[0027] 100. Capacitive touch button device; 200. Touch panel; 210. Button icon; 300. Capacitive button assembly; 301. Positioning hole; 310. Capacitive button board; 311. Positioning icon for light shield; 320. Light guide plate; 321. Clearance hole; 322. Clearance groove; 323. Optical reflector; 330. Diffuser; 331. Diffuser clearance hole; 332. Diffuser clearance groove; 340. Reflective film; 400. Sensing area; 410. Illumination group; 411. First illumination lamp; 412. Second illumination lamp; 420. Light shield; 430. Connection interface; 440. Grounding conductive element; 450. Double-sided adhesive strip; 500. Base; 510. Positioning post; 600. Touch screen device; 610. Touch screen panel; 620. Display screen; 630. Capacitive touch panel. Detailed Implementation

[0028] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0029] According to one aspect of the present invention, a capacitive touch button device is provided. The capacitive touch button device can be applied to any suitable device, including but not limited to medical devices. Therefore, according to another aspect of the present invention, a medical device is also provided. The medical device includes, but is not limited to, portable ultrasound devices or endoscopic devices. The capacitive touch button device and medical device according to embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0030] like Figure 1-6 As shown, the capacitive touch button device 100 may include a touch panel 200, a capacitive button assembly 300, and a controller (not shown).

[0031] The directional term "front side" used in this invention refers to the side closer to the user. That is, the user can touch the front side of the touch panel 200 to operate it. The directional term "back side" used in this invention refers to the side away from the user. The touch panel 200 can have any number of button icons 210, including but not limited to the four shown in the figure, but also one, two, or other. When there are multiple button icons 210, they can be arranged in a straight line, an arc, or any other suitable manner. The button icons 210 can be any suitable icons such as letters, numbers, or symbols. The button icons 210 can be set on the touch panel 200 by screen printing, embossing, offset printing, inkjet printing, or any other suitable method. Exemplarily, the button icons 210 can be set on the front side of the touch panel 200. Exemplarily, the touch panel 200 can also be constructed as a translucent touch panel made of a translucent material such as glass or acrylic, and the button icons 210 can be set on the back side of the touch panel 200.

[0032] The capacitive button assembly 300 can be directly or indirectly connected to the touch panel 200. Specifically, the capacitive button assembly 300 can be connected to the back side of the touch panel 200. A sensor can be provided on the capacitive button assembly 300. The sensor can be configured to correspond one-to-one with the button icon 210. The sensor may include a capacitor (not shown). The capacitance value of the capacitor changes when its corresponding button icon 210 is touched.

[0033] The controller can be electrically connected to a capacitor. The controller can be used to detect changes in the capacitor's capacitance. The controller can be constructed using electronic components such as timers, comparators, registers, and digital logic circuits, or implemented using processor chips and their peripheral circuits, such as microcontrollers, microprocessors, programmable logic controllers (PLCs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), and application-specific integrated circuits (ASICs).

[0034] In practical applications, when a user touches the button icon 210 with their finger or other object, the capacitance value of the capacitor corresponding to the button icon 210 can change. Specifically, the capacitor may have a sensing area 400. The sensing area 400 may be located directly below its corresponding button icon 210. The sensing area 400 can sense that the button icon 210 has been touched, and the capacitance value of the capacitor can change. When the controller detects a change in the capacitance value of the capacitor, the controller can send a relevant control command, which can then be used to control other components to perform related operations, such as controlling the illumination group 410 to emit light. For example, when the capacitive touch button device 100 is applied to other devices, the device may also include a sound-emitting device. When the controller detects a change in the capacitance value of the capacitor, the controller can send a relevant control command to control the sound-emitting device to emit a corresponding key tone to indicate to the user that the function of the button icon 210 has been triggered. It should be noted that the "touch button icon 210" refers to touching the area where the touch button icon 210 is located. That is, when the button icon 210 is set on the front side of the touch panel 200, the user can directly touch the button icon 210. When the button icon 210 is set on the back side of the touch panel 200, the user can touch the part on the front side of the touch panel 200 that is directly above the button icon 210.

[0035] In summary, the capacitive touch button device 100 of this utility model embodiment can achieve the function of touch buttons without the need for a capacitive touch panel, thus reducing costs. Based on this, the capacitive touch button device 100 can be equipped with different numbers of button icons 210 according to requirements, and the button icons 210 can be placed in any suitable position. Therefore, the capacitive touch button device 100 has a high degree of freedom and good applicability. Furthermore, the capacitive touch button device 100 has a relatively simple structure, is easy to install, and has reliable function.

[0036] In an embodiment where the capacitive touch button device 100 is applied to a medical device, the medical device may further include a touch screen device 600. The touch screen device 600 may include a touch screen panel 610, a display screen 620, and a capacitive touch panel 630. The touch screen panel 610 is typically a light-transmitting touch screen panel made of materials such as glass. The display screen 620 may be connected between the touch screen panel 610 and the capacitive touch panel 630. Users can touch the touch screen panel 610 to perform related operations. The touch panel 200 and the touch screen panel 610 may be constructed as a single integrated piece. With this configuration, the medical device can have a touch screen device 600 and can also temporarily add buttons when needed without redesigning a new capacitive touch panel. In practical applications, only one new touch panel needs to be designed to form both the touch panel 200 and the touch screen panel 610. Since touch panels are relatively inexpensive, even if buttons are temporarily added to the medical device, the cost will not increase significantly.

[0037] For example, the touch panel 200 can be configured as a light-transmitting touch panel. The sensor may also include an illumination group 410. The illumination group 410 can be configured one-to-one with a capacitor. The illumination group 410 can be used to emit light toward its corresponding button icon 210. A controller can also be electrically connected to the illumination group 410. The controller can be used to control the corresponding illumination group 410 to emit light when the capacitance value of the capacitor changes. In practical applications, when a user touches the button icon 210, the capacitance value of the capacitor may change, and the controller can control the illumination group 410 corresponding to the capacitor to emit light to illuminate the corresponding button icon 210. Thus, the user receives feedback to confirm that the function of the button icon 210 has been triggered. With this configuration, the capacitive touch button device 100 has good human-computer interaction. The illumination group 410 can use any suitable illumination source such as an LED or halogen lamp, as long as it can illuminate the corresponding button icon 210.

[0038] For example, the touch panel 200 can be a translucent touch panel with a darker tint, and the button icons 210 can be semi-translucent black button icons. With this configuration, when the lighting assembly 410 stops emitting light, the button icons 210 are similar in color to the touch panel 200, thus achieving a concealed effect. For example, the touch panel 200 can have a gloss-diffusing coating applied to the surface of the button icons 210. The gloss-diffusing coating can be used to make the transmitted light more uniform and softer, improving the user experience.

[0039] For example, a light-shielding member 420 may also be provided on the capacitive button assembly 300. The light-shielding member 420 may be spaced between adjacent sensing members. The light-shielding member 420 may block the light emitted by the lighting group 410 to prevent light crosstalk, thereby preventing the light emitted by the lighting group 410 from illuminating other button icons 210.

[0040] Exemplarily, the capacitive button assembly 300 may include a capacitive button board 310 and a light guide plate 320. Both the capacitor and the lighting assembly 410 can be disposed on the capacitive button board 310. In embodiments where the capacitive button assembly 300 is provided with a light-shielding member 420, the light-shielding member 420 can also be disposed on the capacitive button board 310. Exemplarily, the capacitive button board 310 may have a light-shielding member positioning icon 311 printed on it. The light-shielding members 420 can be installed one-to-one with the light-shielding member positioning icon 311. The capacitive button board 310 may also be provided with a connection interface 430. Both the capacitor and the lighting assembly 410 can be electrically connected to the connection interface 430 through the circuitry within the capacitive button board 310. The connection interface 430 can be electrically connected to a controller.

[0041] A light guide plate 320 can be connected between the front side of the capacitive keypad 310 and the back side of the touch panel 200. The light guide plate 320 may have clearance holes 321 and optical reflectors 323. Illumination lamp groups 410 can extend into the clearance holes 321 one by one. The shape of the clearance hole 321 can be adapted to its corresponding illumination lamp group 410. Optical reflectors 323 can be located on one side of the clearance hole 321 one by one. Optical reflectors 323 may include, but are not limited to, circles, rectangles, or any other suitable shape. Optical reflectors 323 can be located on the back (i.e., directly below) of their corresponding key icons 210. Furthermore, the optical reflectors 323 may have multiple optical reflective points for reflecting light towards their corresponding key icons 210. The lighting assembly 410 can emit light towards its corresponding optical reflector 323, reflecting the light to the corresponding button icon 210 through multiple optical reflective points on the optical reflector 323, thereby illuminating the button icon 210. Compared to emitting light directly towards the button icon 210, the lighting assembly 410 of this solution emits light with a wider beam angle, allowing for uniform distribution over a larger area, resulting in more uniform and softer light and avoiding visual discomfort caused by overly concentrated light. Furthermore, the lighting assembly 410 can provide space for the capacitor, allowing it to be located directly below its corresponding button icon 210. The light guide plate 320 can also be provided with clearance grooves 322. Light shields 420 can extend into the clearance grooves 322 one by one. The shape of the clearance groove 322 can be adapted to its corresponding light shield 420.

[0042] For example, the multiple optical reflective points of the optical reflector 323 can be arranged in a gradually sparser manner along the direction toward its corresponding lighting group 410. Since the light gradually becomes more abundant along the direction toward the lighting group 410, arranging fewer optical reflective points near the lighting group 410 and arranging more optical reflective points away from the lighting group 410 can make the light reflected by the optical reflector 323 more uniform.

[0043] For example, the capacitive button assembly 300 may further include a diffuser 330. The diffuser 330 can be connected between the light guide plate 320 and the touch panel 200. Specifically, the diffuser 330 can be connected between the front side of the light guide plate 320 and the back side of the touch panel 200 by any suitable method such as adhesive bonding. The diffuser 330 may be provided with diffuser clearance holes 331 and diffuser clearance grooves 332. The diffuser clearance holes 331 can be provided one-to-one with the clearance holes 321. The lighting group 410 can be extended into the diffuser clearance holes 331 one-to-one. The diffuser clearance grooves 332 can be provided one-to-one with the clearance grooves 322. The light shield 420 can be extended into the diffuser clearance grooves 332 one-to-one. The diffuser 330 can further homogenize the light reflected by the optical reflector 323, making the light at the button icon 210 more uniform. The diffuser sheet 330 can be made of any suitable light-diffusing material, such as milky white translucent plastic.

[0044] For example, the capacitive button assembly 300 may also include a reflective film 340. The reflective film 340 can be connected between the light guide plate 320 and the capacitive button board 310. Specifically, acrylic adhesive can be applied to the front and back sides of the reflective film 340, so that it can be bonded between the back side of the light guide plate 310 and the front side of the capacitive button board 320. The reflective film 340 may also be provided with a structure to avoid the illumination group 410 and the light shield 420. By setting the reflective film 340, light can be reflected to the touch panel 200 as much as possible to avoid wasting light. For example, the reflective film 340 can be a white reflective film, which has a better reflective effect.

[0045] For example, each lighting group 410 may include multiple lights. Multiple lights can be used to emit light of different colors. For example, the lighting group 410 may include a first light 411 and a second light 412. The first light 411 can be used to emit white light. For example, the power of the first light 411 can be 0.013W. The second light 412 can be used to emit multi-colored light, such as green and red light. For example, the power of the first light 411 can be 0.038W. The controller can be used to control at least one light in its corresponding lighting group 410 to emit light when the capacitance value of the capacitor changes. With this configuration, different colors can be displayed at the button icon 210 according to user needs.

[0046] Exemplarily, the capacitive touch button device 100 may further include a base 500. The capacitive button assembly 300 may be disposed on the base 500. In embodiments where the capacitive touch button device 100 is applied to a medical device, the base 500 may be the housing of the medical device or a keyboard panel, etc. The touch screen device 600 may also be disposed on the base 500. Exemplarily, a double-sided adhesive strip 450 may be provided on the back side of the capacitive button board 310. The double-sided adhesive strip 450 may be located on both sides of the back side of the capacitive button board 310, thereby allowing it to be adhered to the base 500. In other embodiments, the capacitive button assembly 300 may be disposed on the base 500 by any suitable method such as screw connection.

[0047] A grounding conductive element 440 may also be provided on the capacitive button assembly 300. The grounding conductive element 440 can be connected to the base 500. With this configuration, when static electricity is present in the capacitive touch button device 100, the static electricity can be conducted to the base 500 through the grounding conductive element 440. This prevents static electricity accumulation from causing a decrease in the sensitivity of the capacitive touch button device 100. The grounding conductive element 440 includes, but is not limited to, conductive sponge, conductive cloth, spring, or screw. In the embodiment shown in the figure, the grounding conductive element 440 may include three spaced-apart conductive sponges.

[0048] For example, a positioning post 510 may be provided on the base 500. A positioning hole 301 may be provided on the capacitive button assembly 300. The positioning holes 301 can be inserted into the positioning post 510 one by one to achieve accurate positioning at the expected position on the base 500.

[0049] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0050] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0051] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0052] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0053] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A capacitive touch key device, characterized by comprising: The capacitive touch key device comprises: a touch panel provided with key icons; a capacitive key assembly connected to the touch panel, the capacitive key assembly being provided with sensing pieces corresponding to the key icons, the sensing pieces comprising capacitors, the capacitance of the capacitors changing when the corresponding key icons are touched; and a controller electrically connected to the capacitors to detect the change in the capacitance.

2. The capacitive touch key device according to claim 1, wherein The touch panel is configured as a light-transmitting touch panel, the sensing pieces further comprising illumination lamp groups corresponding to the capacitors and used for emitting light towards the corresponding key icons, the controller being further electrically connected to the illumination lamp groups, the controller being used for controlling the corresponding illumination lamp groups to emit light when the capacitance of the capacitors changes.

3. The capacitive touch key device according to claim 2, wherein The capacitive key assembly is further provided with light-blocking pieces spaced between adjacent sensing pieces.

4. The capacitive touch key device according to claim 2, wherein The capacitive key assembly comprises a capacitive key board card and a light guide plate connected between the capacitive key board card and the touch panel, the capacitors and the illumination lamp groups being arranged on the capacitive key board card, the light guide plate being provided with avoiding holes and optical reflection parts corresponding to the avoiding holes, the optical reflection parts being arranged on the back side of the corresponding key icons and provided with a plurality of optical reflection points used for reflecting light towards the corresponding key icons, the illumination lamp groups being inserted into the avoiding holes and used for emitting light towards the corresponding optical reflection parts.

5. The capacitive touch key device according to claim 4, wherein The plurality of optical reflection points of the optical reflection part are gradually arranged sparsely in the direction towards the corresponding illumination lamp group.

6. The capacitive touch key device according to claim 4, wherein The capacitive key assembly further comprises a diffusion sheet connected between the light guide plate and the touch panel.

7. The capacitive touch key device according to claim 5, wherein The capacitive key assembly further comprises a light reflection film connected between the light guide plate and the capacitive key board card.

8. The capacitive touch key apparatus according to claim 2, wherein Each of the illumination lamp groups comprises a plurality of illumination lamps used for emitting light of different colors, the controller being used for controlling at least one illumination lamp of the corresponding illumination lamp group to emit light when the capacitance of the capacitors changes.

9. The capacitive touch key device according to claim 1, wherein The capacitive touch key device further comprises a base, the capacitive key assembly being further provided with a grounding conductive piece connected to the base.

10. A medical device, characterized by The medical device comprises the capacitive touch key device as claimed in any one of claims 1-9.

11. The medical device of claim 10, wherein, The medical device further comprises a touch screen device, the touch screen device comprising a touch screen panel, the touch panel and the touch screen panel being configured as an integrally formed piece.

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