Touch spring, touch module and electrical equipment

Abstract

The utility model relates to a touch control spring which comprises a spring body. The spring base is located below the spring main body, and the spring base and the spring main body are integrally formed and jointly define a containing space used for arranging electrical elements; wherein an avoiding gap is defined by the spring base, and is used for a wire of an electrical element to pass through; wherein a stop part is formed on the spring base and is used for limiting the downward pressing stroke of the spring main body. Therefore, by means of the special structural design of the touch control spring, the touch control spring can be reliably prevented from making contact with the wires in a cost-effective mode. In addition, the utility model relates to a touch control module with the touch control spring and electrical equipment with the touch control module.

Description

Technical Field

[0001] This utility model relates to the field of touch detection, specifically to a touch spring, a touch module, and an electrical device. Background Technology

[0002] In the field of modern electrical equipment, with continuous technological advancements and ever-increasing user demands for enhanced user experience, the demand for touch panels with integrated touch display functionality is growing rapidly. Touch panels improve human-computer interaction, enabling users to perform various functions and receive intuitive display feedback through simple touch operations.

[0003] Touch sensors are a key component of these touch panels, and their working principles are primarily based on capacitive, resistive, and infrared technologies. Taking a capacitive touch sensor as an example, when a human finger touches the screen, it changes the capacitance value of the screen surface. The sensor determines the touch location by detecting this capacitance change. In some applications, touch springs are used as a functional component of the touch sensor. Touch springs can transmit touch signals, allowing for precise detection of touch actions, thereby improving the smoothness and accuracy of user operation. Meanwhile, the display function is also an important part of the touch panel, responsible for presenting different types of information from the electrical device to the user intuitively. Backlighting technology plays an indispensable role here, with LED backlighting being a common technology.

[0004] However, existing touch springs and LEDs still present some problems in practical applications. For example, existing touch springs are prone to contact with the LED traces during the pressing process. This contact can cause signal interference, affecting the accuracy and stability of touch sensing. These problems become even more pronounced when attempting to implement this touch display function on a low-cost single-sided circuit board.

[0005] Therefore, double-sided or multi-layer circuit boards are typically used to ensure electrical isolation between the touch spring, LED, and their traces. However, the manufacturing of double-sided or multi-layer circuit boards involves more complex processes, directly leading to increased costs. Furthermore, this design approach may also complicate the assembly process between the touch spring and LED. These issues limit the development and application of low-cost, high-performance electrical devices with touch sensing and backlit display functions.

[0006] Therefore, there is an urgent need for a cost-effective solution to reliably prevent the touch spring from contacting the wiring. Furthermore, a simple overall structure and high assembly efficiency are also desirable. Utility Model Content

[0007] The objective of this invention is to provide a touch spring that overcomes at least one technical problem in the prior art. Through a special structural design, the touch spring reliably avoids contact with the wiring in a cost-effective manner. Furthermore, some embodiments of this invention also provide touch springs that achieve high assembly efficiency and / or a simple overall structure. Additionally, this invention provides a touch module and electrical device incorporating the aforementioned touch spring.

[0008] According to a first aspect of the present invention, a touch spring is provided, the touch spring comprising: a spring body; a spring base located below the spring body, wherein the spring base and the spring body are integrally formed and together define an accommodating space for arranging electrical components; wherein the spring base defines an clearance clearance for the passage of wiring of the electrical components; wherein the spring base is formed with a stop portion for limiting the downward stroke of the spring body.

[0009] In some embodiments, the stop portion is configured as the intersection of the spring base and the spring body on the vertical projection plane.

[0010] In some embodiments, the clearance is defined by a stop portion of the spring base; and / or the clearance is defined by an upward bend portion of the spring base.

[0011] In some embodiments, the spring base includes a first stop and a second stop spaced apart from the first stop, and the clearance is defined between the first stop and the second stop.

[0012] In some embodiments, the spring base includes: a crossing section guided from the outside to the inside, the crossing section being configured as a first stop; a first spring section guided from the inside of the crossing section along a first circumferential direction; a second spring section guided along a second circumferential direction, the first circumferential direction being opposite to the second circumferential direction; and a turning section transitioning from the first spring section to the second spring section from the inside to the outside, the turning section being configured as a second stop.

[0013] In some embodiments, the spring base includes a plurality of stops, which are correspondingly formed by cross-sections of the spring base that are guided from the outside in and from the inside out. In some embodiments, the equivalent radius of a first spring section is less than or equal to the equivalent radius of the spring body, while the equivalent radius of a second spring section is greater than the equivalent radius of the spring body.

[0014] In some embodiments, the first spring segment is wound around a first angle along a first surrounding direction, the first angle being between 180 degrees and 350 degrees.

[0015] In some embodiments, the second spring segment surrounds a second angle along a second surrounding direction, the second angle being between 180 degrees and 350 degrees.

[0016] In some embodiments, the second spring section of the spring base is connected to the spring body along a second circumferential direction.

[0017] In some embodiments, the spring base is formed with positioning feet for mounting into positioning slots in a circuit board.

[0018] In some embodiments, the spring base includes a first positioning foot for mounting into a first positioning groove in a circuit board, the first positioning foot being formed on the first spring segment.

[0019] In some embodiments, the spring base includes a second positioning foot for mounting into a second positioning groove in a circuit board, the second positioning foot being configured as an end section of the spring base, the end section being connected to a crossing section serving as a first stop.

[0020] In some embodiments, the upward bend of the spring base and the spring body have an intersection on the vertical projection plane that serves as a stop.

[0021] In some embodiments, the spring base defines a plurality of clearance gaps for the passage of wiring for electrical components.

[0022] In some embodiments, the spring base is configured as the bottommost coil of the touch spring or the bottommost two coils of the touch spring.

[0023] In some embodiments, the stop on the spring base is configured to limit the downward stroke of the spring body, such that the spring body abuts against the stop on the spring base and cannot be pressed further down, thereby the spacing between the spring body and the wiring is greater than 0.1 mm, 0.2 mm, 0.3 mm, or even 0.5 mm.

[0024] According to a second aspect of the present invention, a touch module is provided, the touch module comprising: a circuit board; a processing unit mounted on a first surface of the circuit board; electrical components; and a touch spring according to some embodiments of the present invention, wherein the electrical components are arranged within a receiving space of the touch spring, and traces on the first surface of the circuit board are guided from the electrical components through a clearance defined by the touch spring and then to the processing unit.

[0025] In some embodiments, the circuit board has pads disposed on a first surface of the circuit board and traces leading from the pads to the processing unit, wherein the spring base of the touch spring is soldered to the pads.

[0026] In some embodiments, the circuit board has a plurality of distributed pads arranged on a first surface of the circuit board, and the spring base of the touch spring is soldered to the plurality of pads.

[0027] In some embodiments, the circuit board has an arc-shaped pad disposed on a first surface of the circuit board, and the spring base of the touch spring is soldered to the arc-shaped pad.

[0028] In some embodiments, the circuit board has pads arranged around a positioning groove on the circuit board, and the positioning feet of the spring base of the touch spring are inserted into the positioning groove on one hand and soldered to the pads around the positioning groove on the other hand.

[0029] In some embodiments, the circuit board is configured as a single-sided printed circuit board.

[0030] In some embodiments, the touch spring is configured as a surface-mount touch spring.

[0031] In some embodiments, the electrical component is configured as a surface-mount light-emitting diode.

[0032] According to a third aspect of the present invention, an electrical device is provided, the electrical device having a touch panel integrating a touch display function, the touch panel having a touch module according to some embodiments of the present invention.

[0033] In some embodiments, the electrical equipment is a household appliance, such as a water heater, air conditioner, range hood, stove, refrigerator, oven, dishwasher, food processor, washing machine, dryer, stereo, television, smart faucet, or smart toilet.

[0034] Other features of this invention are derived from the accompanying drawings and the detailed description. All features and combinations thereof mentioned above in the specification, as well as features and combinations thereof mentioned below in the detailed description and / or shown separately in the drawings, can be used not only in the corresponding combinations given, but also in other combinations, or in their individual states. Attached Figure Description

[0035] Figure 1 and Figure 2 Schematic perspective views of the touch springs of some embodiments of the present invention are shown from different angles;

[0036] Figure 3 and 4 Schematic perspective views of touch modules according to some embodiments of the present invention are shown from different viewing angles, wherein, Figure 4 A partial enlarged view of the touch module is also shown;

[0037] Figure 5 It shows Figure 3 and 4 A schematic diagram of the touch module in the state where the touch spring is separated from the circuit board;

[0038] Figure 6 It shows Figure 3 and 4 A schematic top view of the touch module in the middle;

[0039] Figure 7 It shows Figure 3 and 4 A schematic diagram of the circuit board for the touch module in the image;

[0040] Figure 8 and Figure 9 Schematic perspective views of the touch springs of other embodiments of the present invention are shown from different angles.

[0041] Figure 10 A schematic perspective view of a touch module according to other embodiments of the present invention is shown;

[0042] Figure 11 It shows Figure 10 A schematic diagram of the touch module with the touch spring separated from the circuit board;

[0043] Figure 12 It shows Figure 10 A schematic top view of the touch module;

[0044] Figure 13 It shows Figure 10 A schematic diagram of the circuit board for the touch module. Detailed Implementation

[0045] In the various embodiments described, the same reference numerals or element names are used for the same elements, and the disclosure contained throughout the specification can be applied semantically to elements with the same reference numerals or element names. Furthermore, in the various embodiments, the number, implementation, and / or arrangement of elements are not limited to the examples shown, but other numbers, implementations, and / or arrangements can be selected according to actual needs.

[0046] This invention is not limited to the embodiments shown, but includes or extends to all technical equivalents that fall within the scope of the appended claims. The positional descriptions chosen in the specification, such as, for example, top, bottom, left, right, etc., refer to the direct description and the accompanying drawings, and can be adapted to new positions according to their meaning when the positions change.

[0047] The features disclosed in this utility model document are important for the implementation of embodiments in different design aspects, not only individually but also in any combination.

[0048] In this document, the term “A or B” includes both “A and B” and “A or B”, rather than exclusively including only “A” or only “B”, unless otherwise specified.

[0049] In this document, the term "exemplary" means "used as an example, instance, or illustration," and not as a "model" to be precisely copied. Any implementation described herein by example is not necessarily to be construed as preferred or advantageous over other implementations. Furthermore, this invention is not limited to any stated or implied theory given in the foregoing technical field, background art, summary of the invention, or detailed description.

[0050] Additionally, terms such as “first,” “second,” etc., may be used in this document for reference purposes only and are not intended to be limiting. For example, unless the context clearly indicates otherwise, the words “first,” “second,” and other such numerical terms relating to structures or elements do not imply order or sequence.

[0051] This invention proposes a touch spring for the aforementioned touch panel. This touch spring can be configured as a so-called irregularly shaped touch spring. Through its unique structural design, contact between the touch spring and the wiring can be reliably avoided in a cost-effective manner. Furthermore, some embodiments of this invention also achieve high assembly efficiency and / or a simple overall structure.

[0052] According to this invention, the touch spring can be divided into a spring body and a spring base located below the spring body. For example, the spring base can be configured as one, two, or several turns of spring wire at the bottom of the touch spring, and the spring base can be continuously connected to the spring body. The spring base of the touch spring of this invention can form a clearance for wiring and a stop to limit the downward stroke of the spring body, thereby reliably preventing the touch spring from contacting the wiring in a cost-effective manner.

[0053] Next, with reference to the accompanying drawings, we will further describe in detail some embodiments of the touch spring and the touch module on which the touch spring is installed.

[0054] Reference Figure 1-7 The image shows some views of a touch spring 10 and a touch module 100 on which the touch spring 10 is mounted, according to some embodiments of the present invention.

[0055] like Figure 1 and2 The diagram shows schematic perspective views of the touch spring 10 from different angles, representing several embodiments of the present invention. The touch spring 10 may include a spring body 2 and a spring base 3 located below the spring body 2. The spring base 3 may be integrally formed with the spring body 2. That is, the touch spring 10 can be formed by winding a continuous spring wire, and the spring base 3 may be wound as the bottom layer of several turns, for example, approximately two turns of spring wire, and connected to the spring body 2. The spring body 2 of the touch spring 10 may have a conventional, regular shape, such as a cylindrical shape, thereby maintaining the good touch performance of the touch spring 10. The spring base 3 of the touch spring 10 may have an irregular shape, which reliably prevents the touch spring from contacting the wiring.

[0056] It should be understood that, according to the significance of this utility model, the contact between the touch spring and the trace can be understood as the contact between the touch spring 10 and the surface area of ​​the circuit board 20 on which the trace 25 is printed during the pressing process (see...). Figure 3-7 The contact between the touch spring 10 and the trace 25 causes them to come into close contact, especially through a thin layer of oil. This contact, or rather, contact, may cause signal interference, affecting the accuracy and stability of touch sensing.

[0057] The touch spring 10 internally defines a receiving space 4 for accommodating electrical components. This allows for the installation of appropriate electrical components, such as light-emitting diodes (LEDs), especially surface-mount LEDs, within the receiving space 4, thereby achieving optimized space integration. In other words, the appropriate electrical components can be surrounded by the touch spring 10. It should be understood that the electrical components can also be configured as, or further include, any other form of functional device, not limited to LEDs for touch display functions. In other embodiments, various forms of functional devices, such as resistors, capacitors, inductors, and / or sensors, can also be installed within the receiving space 4 to improve space integration.

[0058] To prevent the touch spring 10 from contacting the wiring 25, a clearance gap 5 is defined by the spring base 3 for the wiring 25 of the electrical component to pass through. That is, the wiring 25 of the electrical component can be guided from inside the touch spring 10 through the clearance gap 5 and maintain a distance from the touch spring 10, such as its spring body 2 and the spring base 3.

[0059] Furthermore, to prevent the touch spring 10 from contacting the wiring 25, a stop portion 6 can be formed on the spring base 3 to limit the downward stroke of the spring body 2. This limits the distance between the spring body 2 and the wiring 25 of the electrical component. Advantageously, the stop portion 6 can be configured as the intersection of the spring base 3 and the spring body 2 on the vertical projection plane. The vertical projection plane can be understood as the projection plane whose normal is parallel to the longitudinal axis of the touch spring 10. Thus, during the downward pressing of the touch spring 10, the spring body 2 will interfere with the spring base 3 at the stop portion 6, that is, the spring body 2 will abut against the stop portion 6 of the spring base 3, preventing the spring body 2 from pressing down further.

[0060] Advantageously, the stop 6 on the spring base 3 can be configured to limit the downward stroke of the spring body 2 such that the gap between the spring body 2 and the wiring 25 is greater than 0.1 mm, 0.2 mm, 0.3 mm, or even 0.5 mm. Thus, the touch spring 10 and the wiring 25 can be spaced apart by an oil layer and an air gap layer. Preferably, an upward bend can also be formed on the spring base 3 at the clearance gap 5; for example, a local section of the spring wire can be bent upward along the longitudinal axis of the touch spring 10, thereby allowing a further increase in the size of the clearance gap 5, thus increasing the gap between the spring body 2 and the wiring 25. Advantageously, the upward bend can involve the stop 6. More precisely, the stop 6 can be configured to be bent upward.

[0061] Furthermore, at least one positioning foot 7 can be formed on the spring base 3 for mounting into the positioning groove of the circuit board. The positioning foot 7 can be configured as a downward protrusion formed on the spring base 3, which can be pre-positioned into the positioning groove of the circuit board, thereby realizing an efficient assembly process of the touch spring 10. In some embodiments, the positioning foot 7 can be configured as an I-type positioning foot, a U-type positioning foot, or an M-type positioning foot, etc. It should be understood that the positioning foot is not necessary. In some embodiments, pre-fixing can be achieved by means of other pre-positioning measures, such as adhesives or limiting structures.

[0062] like Figure 3-7 As shown, some schematic diagrams of a touch module 100 according to some embodiments of the present invention are illustrated. Figure 3 and 4 Schematic perspective views of the touch module 100 from different viewing angles are shown below. Figure 4 A partial enlarged view of the touch module is also shown; Figure 5 A schematic diagram of the touch module 100 in the state where the touch spring 10 is separated from the circuit board 20 is shown. Figure 6 A schematic top view of the touch module 100 is shown. Figure 7 A schematic diagram of the circuit board 20 of the touch module 100 is shown.

[0063] The touch module 100 may include a circuit board 20, a processing unit 22 mounted on a first surface of the circuit board 20, electrical components 23, and a touch spring 10. In the illustrated embodiment, the circuit board 20 can advantageously be implemented as a single-sided printed circuit board, thereby allowing the integration of the required functional devices and wiring layout 25 on one surface (i.e., the first surface) of the circuit board 20. It should be understood that the circuit board 20 of this invention is not limited to using a purely single-sided printed circuit board. In other embodiments, some functional devices and wiring layouts may also be provided on a second surface of the circuit board 20.

[0064] The touch spring 10 can be mounted or pre-positioned into the positioning slot 24 of the circuit board 20 via its own positioning feet 7. In some embodiments, the touch spring 10, such as a surface-mount touch spring, can first be pre-positioned on the circuit board 20 using the positioning feet 7, and then can be mechanically and electrically connected to the circuit board 20 by soldering, such as reflow soldering, hand soldering, or laser soldering, thereby achieving efficient assembly.

[0065] Electrical components 23, such as LEDs, can be arranged within the receiving space 4 of the touch spring 10, and traces 25 on the first surface of the circuit board 20 can be guided from the electrical components 23 through the clearance 5 defined by the touch spring 10 and continue to the processing unit 22. This achieves an electrical connection between the electrical components 23, such as LEDs, and the processing unit 22.

[0066] Furthermore, the circuit board 20 may have pads 26 arranged on a first surface of the circuit board 20 and traces 25 leading from the pads 26 to the processing unit 22. The spring base 3 of the touch spring 10 may be soldered (e.g., reflow soldering, manual soldering, or laser soldering) to the pads 26, thereby achieving not only reliable mechanical fixation of the touch spring 10 on the first surface of the circuit board 20, but also reliable electrical connection between the touch spring 10 and the processing unit 22. Thus, the touch spring 10 can be mounted on the circuit board 20 by soldering. In some embodiments, the circuit board 20 may have at least one pad 26, preferably a plurality of distributed pads, arranged on the first surface of the circuit board 20, and the spring base 3 of the touch spring 10 may be soldered to the at least one pad 26, preferably a plurality of distributed pads. Additionally or alternatively, the circuit board 20 may have at least one arcuate pad arranged on the first surface of the circuit board 20, and the spring base 3 of the touch spring 10 is soldered to the arcuate pad. Additionally or alternatively, the circuit board 20 may have pads 26 arranged around the positioning groove 24 of the circuit board 20, and the positioning feet 7 of the spring base 3 of the touch spring 10 are inserted into the positioning groove 24 on one hand and soldered to the pads 26 around the positioning groove 24 on the other hand.

[0067] Continue to refer to Figure 1-4 This paper introduces an exemplary implementation of the clearance gap 5. In the illustrated embodiment, the clearance gap 5 for the wiring 25 can be defined by the stop portion 6 of the spring base 3. Figure 1-4 As shown, the spring base 3 may include a first stop 601 and a second stop 602 spaced apart from the first stop 601. The clearance 5 may be defined between the first stop 601 and the second stop 602. That is, during the downward compression of the touch spring 10, the spring body 2 may be abutted against the first stop 601 on one side and against the second stop 602 on the other side, allowing the spring body 2 to be supported at least between the first stop 601 and the second stop 602, forming a relatively large interference-free space. Thus, the wiring 25 can be freely guided through this interference-free space without the risk of being pressed into contact by the spring body 2.

[0068] To form the corresponding stop portion 6, the spring base 3 can be wound as follows: the spring base 3 may include a crossing section guided from the outside to the inside as a first stop portion 601, a first spring section 301 guided from the inside of the crossing section along a first circumferential direction, a second spring section 302 guided along a second circumferential direction opposite to the first circumferential direction, and a turning section from the first spring section 301 to the second spring section 302 as a second stop portion 602. Advantageously, the second spring section 302 can be continuously connected to the spring body 2 along the second circumferential direction. It should be understood that, according to the meaning of this utility model, "outside" refers to the direction away from the receiving space 4 of the touch spring 10, while "inside" refers to the direction pointing towards the receiving space 4 of the touch spring 10. The crossing section serving as the first stop portion can enter the spring body 2 from outside the spring body 2 in the vertical projection plane, thereby forming a first intersection of the spring base 3 and the spring body 2 in the vertical projection plane. The rotation section, which serves as the second stop, can extend from inside the spring body 2 to outside the spring body 2 on the vertical projection plane, thereby forming the second intersection of the spring base 3 and the spring body 2 on the vertical projection plane.

[0069] Additionally or alternatively, the spring base 3 may include a plurality of stops, which may be formed by correspondingly outward-to-inward and inward-to-outward spanning sections of the spring base. Advantageously, the plurality of stops may be formed alternately by outward-to-inward and inward-to-outward spanning sections.

[0070] Advantageously, at least a portion of the first spring section 301 and the second spring section 302 of the spring base 3 can be soldered to the pad 26 on the first surface of the circuit board 20, thereby enabling a reliable mechanical and electrical connection between the touch spring 10 and the circuit board 20.

[0071] In the illustrated embodiment, the equivalent radius of the first spring segment 301 can be less than or equal to the equivalent radius of the spring body 2, while the equivalent radius of the second spring segment 302 can be greater than the equivalent radius of the spring body 2. For example, the first spring segment 301 can be wound around a first angle along a first winding direction, the first angle being between 180 degrees and 350 degrees or between 240 degrees and 300 degrees. The second spring segment 302 can be wound around a second angle along a second winding direction, the second angle being between 180 degrees and 350 degrees or between 240 degrees and 300 degrees.

[0072] In some embodiments, the spring base 3 may include a plurality of positioning feet 7, particularly a plurality of positioning feet 7 spaced apart from each other. This can further improve the pre-positioning of the spring base 3 on the circuit board 20. Figure 1 and 2As shown, the spring base 3 may include a first positioning foot 701, such as a U-shaped positioning foot, which may be formed on the first spring section 301. Furthermore, the spring base 3 may include a second positioning foot 702, such as an I-shaped positioning foot, which may be configured as an end section of the spring base 3, connected to a spanning section serving as a first stop 601. Advantageously, the first positioning foot 701 and the second positioning foot 702 may be arranged opposite each other, thereby further improving the reliability of pre-positioning.

[0073] Reference Figure 8-13 The image shows some views of a touch spring 10 and a touch module 100 on which the touch spring 10 is mounted, according to other embodiments of the present invention.

[0074] like Figure 8 and 9 The figures shown are schematic perspective views of the touch spring 10 from different perspectives in some other embodiments of the present invention. It should be understood that, unless otherwise stated or contradictory, the above technical features and descriptions of the touch spring 10 apply to the touch spring 10 in these embodiments.

[0075] In the illustrated embodiment, the touch spring 10 may include a spring body 2 and a spring base 3 located below the spring body 2. The spring base 3 may be wound as approximately one coil of spring wire at the bottom and connected to the spring body 2. The spring body 2 of the touch spring 10 may have a conventional, regular shape, such as a cylindrical shape, thereby maintaining good touch performance of the touch spring 10. The spring base 3 of the touch spring 10 may have an irregular shape, such as a near-quadrilateral shape, which reliably prevents the touch spring 10 from contacting the wiring 25.

[0076] To prevent the touch spring 10 from contacting the wiring 25, a clearance gap 5 is defined by the spring base 3 for the wiring 25 of the electrical component 23 to pass through. In other words, the wiring 25 of the electrical component 23 can be guided from inside the touch spring 10 through the clearance gap 5 and maintain a distance from the touch spring 10, such as its spring body 2 and the spring base 3.

[0077] In the illustrated embodiment, the clearance 5 can be defined by the upward bend 8 of the spring base 3. In areas where the trace 25 of the electrical component 23 needs to cross, the spring wire of the spring base 3 can be bent upwards along the longitudinal axis of the touch spring 10, forming a raised section to ensure that the trace 25 passes through the clearance 5 defined by this raised section without contact risk. Advantageously, the upward bend 8 can be designed such that the distance between the upward bend 8 and the trace 25 is greater than 0.1 mm, 0.2 mm, 0.3 mm, or even 0.5 mm.

[0078] In some embodiments, the spring base 3 may define a plurality of clearance gaps 5 for the traces 25 of the electrical components 23 to pass through respectively. In some embodiments, a first clearance gap 5 is defined on a first side of the spring base 3, and a second clearance gap 5 is defined on a second side of the spring base 3, particularly on the opposite second side, thereby allowing the traces 25 to pass through the first clearance gap 5 and the second clearance gap 5 without contact risk. The design with multiple clearance gaps 5 can significantly improve the adaptability of the touch spring 10, making it more flexible and compatible with the layout of the traces 25 on the circuit board 20, optimizing the overall space utilization and reducing the difficulty of routing the traces 25.

[0079] Advantageously, to prevent the touch spring 10 from contacting the trace 25, a stop 6 can be formed on the spring base 3 to limit the downward stroke of the spring body 2. Thus, during the downward compression of the touch spring 10, the spring body 2 will interfere with the spring base 3 at the stop 6; that is, the spring body 2 will abut against the stop 6 of the spring base 3, preventing further downward compression. In the illustrated embodiment, the upward bend 8 of the spring base 3 may have an intersection with the spring body 2 on the vertical projection plane, serving as the stop 6. Advantageously, the stop 6 on the spring base 3 is configured to limit the downward stroke of the spring body 2 such that the spring body 2 is limited by the upward bend 8, thereby maintaining a gap between the spring body 2 and the trace 25 greater than 0.1 mm, 0.2 mm, 0.3 mm, or even 0.5 mm. Thus, the touch spring 10 and the trace 25 can be separated from each other by an oil layer and an air gap layer. It should be understood that the stop portion 6 can also be provided in other areas of the spring base 3, and is not limited to the upwardly bent portion 8.

[0080] Furthermore, at least one positioning foot 7 can be formed on the spring base 3 for mounting into the positioning groove 24 of the circuit board 20. The positioning foot 7 can be configured as a downward protrusion formed on the spring base 3, which can be pre-positioned into the positioning groove 24 of the circuit board 20, thereby realizing an efficient assembly process of the touch spring 10. In some embodiments, the positioning foot 7 can be configured as an I-type positioning foot, a U-type positioning foot, or an M-type positioning foot, etc.

[0081] like Figure 10-13 The diagram shows some schematic diagrams of a touch module 100 according to other embodiments of the present invention. Figure 10 A schematic perspective view of the touch module 100 is shown; Figure 11 A schematic diagram of the touch module 100 in the state where the touch spring 10 is separated from the circuit board 20 is shown. Figure 12 A schematic top view of the touch module 100 is shown. Figure 13 A schematic diagram of the circuit board 20 of the touch module 100 is shown.

[0082] The touch module 100 may include a circuit board 20, a processing unit 22 mounted on a first surface of the circuit board 20, electrical components 23, and a touch spring 10. In the illustrated embodiment, the circuit board 20 may advantageously be implemented as a single-sided printed circuit board, thereby allowing the integration of the required functional devices and trace layout 25 on one surface (i.e., the first surface) of the circuit board 20. It should be understood that the circuit board 20 of this invention is not limited to using a purely single-sided printed circuit board. In other embodiments, some functional devices and trace layout 25 may also be provided on a second surface of the circuit board 20.

[0083] The touch spring 10 can be mounted or pre-positioned into the positioning slot 24 of the circuit board 20 via its own positioning feet 7. In some embodiments, the touch spring 10, such as a surface-mount touch spring, can first be pre-positioned on the circuit board 20 using the positioning feet 7, and then can be mechanically and electrically connected to the circuit board 20 by soldering, such as reflow soldering, hand soldering, or laser soldering, thereby achieving efficient assembly.

[0084] The circuit board 20 may have pads 26 arranged on a first surface of the circuit board 20 and traces 25 leading from the pads 26 to the processing unit 22. The spring base 3 of the touch spring 10 may be soldered (e.g., reflow soldering, manual soldering, or laser soldering) to the pads 26, thereby not only achieving reliable mechanical fixation of the touch spring 10 on the first surface of the circuit board 20, but also achieving reliable electrical connection between the touch spring 10 and the processing unit 22.

[0085] In the illustrated embodiment, the circuit board 20 may have pads 26 arranged around a positioning groove 24 of the circuit board 20, and the positioning feet 7 of the spring base 3 of the touch spring 10 are inserted into the positioning groove 24 on one hand and soldered to the pads 26 around the positioning groove 24 on the other hand. Additionally or alternatively, the circuit board 20 may have at least one distributed pad 26 arranged on a first surface of the circuit board 20, and the spring base 3 of the touch spring 10 may be soldered to the at least one pad 26.

[0086] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solution of the present invention by utilizing the above-disclosed technical content without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A touch spring, characterized by, The touch spring includes: Spring body; A spring base located below the spring body, wherein the spring base is integrally formed with the spring body and together defines a receiving space for accommodating electrical components; The spring base defines a clearance gap for the passage of electrical component wiring. The spring base is formed with a stop portion to limit the downward stroke of the spring body.

2. The touch spring according to claim 1, wherein The stop portion is configured as the intersection of the spring base and the spring body on the vertical projection plane.

3. The touch spring according to claim 1 or 2, characterized in that, The clearance is defined by the stop portion of the spring base; and / or The clearance is defined by the upward bend of the spring base.

4. The touch spring according to claim 3, wherein The spring base includes a first stop portion and a second stop portion spaced apart from the first stop portion, and the clearance is defined between the first stop portion and the second stop portion.

5. The touch spring of claim 4, wherein, The spring base includes: A crossing section guided from the outside in, the crossing section being configured as a first stop; The first spring section is guided from the inside of the spanning section along the first circumferential direction; A second spring segment guided along a second circumferential direction, wherein the first circumferential direction is opposite to the second circumferential direction; A rotation section that transitions from the inside to the outside of the first spring section to the second spring section, wherein the rotation section is configured as a second stop.

6. The touch spring according to claim 5, characterized in that, The equivalent radius of the first spring segment is less than or equal to the equivalent radius of the spring body, while the equivalent radius of the second spring segment is greater than the equivalent radius of the spring body; and / or The first spring segment extends along a first winding direction at a first angle, the first angle being between 180 degrees and 350 degrees; and / or The second spring segment extends along a second winding direction at a second angle, the second angle being between 180 degrees and 350 degrees; and / or The second spring section of the spring base is connected to the spring body along the second circumferential direction.

7. The touch spring according to claim 3, characterized in that, The upward bend of the spring base and the spring body intersect on the vertical projection plane, forming a stop.

8. The touch spring according to claim 1 or 2, characterized in that, The spring base defines multiple clearance gaps for the passage of wiring for electrical components; and / or The spring base is configured as either the bottommost coil of the touch spring or the bottommost two coils of the spring; and / or The stop on the spring base is configured to limit the downward stroke of the spring body, so that the spring body will abut against the stop on the spring base and cannot be pressed down further, thus the gap between the spring body and the wiring is greater than 0.1 mm.

9. The touch spring according to claim 1 or 2, characterized in that, The spring base is formed with positioning feet for mounting into positioning slots in the circuit board; and / or The spring base includes multiple stops, which are formed by cross sections guided from the outside to the inside and from the inside to the outside of the spring base.

10. The touch spring according to claim 5, characterized in that, The spring base includes a first positioning foot for mounting into a first positioning groove in a circuit board, the first positioning foot being formed on the first spring segment; and / or The spring base includes a second positioning foot for mounting into a second positioning groove in a circuit board. The second positioning foot forms an end section of the spring base, which is connected to a crossing section that serves as a first stop.

11. A touch module, characterized in that, The touch module includes: Circuit board; The processing unit, electrical components, and touch spring as claimed in any one of claims 1 to 10, mounted on the first surface of the circuit board. The electrical components are arranged within the receiving space of the touch spring, and the traces on the first surface of the circuit board are guided from the electrical components through the clearance defined by the touch spring to the processing unit.

12. The touch module according to claim 11, characterized in that, The circuit board has pads arranged on a first surface of the circuit board and traces leading from the pads to the processing unit, wherein the spring base of the touch spring is soldered to the pads.

13. The touch module according to claim 12, characterized in that, The circuit board has a plurality of distributed pads arranged on a first surface of the circuit board, and the spring base of the touch spring is soldered to the plurality of pads; or The circuit board has an arc-shaped pad arranged on a first surface of the circuit board, and the spring base of the touch spring is soldered to the arc-shaped pad.

14. The touch module according to claim 12, characterized in that, The circuit board has pads arranged around a positioning groove on the circuit board, and the positioning feet of the spring base of the touch spring are inserted into the positioning groove on one hand and soldered to the pads around the positioning groove on the other hand.

15. The touch module according to any one of claims 12 to 14, characterized in that, The circuit board is configured as a single-sided printed circuit board; and / or The touch spring is configured as a surface-mount touch spring; and / or The electrical component is a surface-mount light-emitting diode.

16. Electrical equipment, characterized in that, The electrical equipment has a touch panel with integrated touch display function, and the touch panel has a touch module according to any one of claims 11 to 15.

Images