Square touch spring structure and touch key

Abstract

The utility model relates to a square touch spring structure belongs to the field of circuit board manufacturing, a square touch spring structure, including circuit board, the circuit board is opened has the welding hole and the limiting hole, contact panel, contact panel set up on the circuit board, light emitting tube element, light emitting tube element set up on the circuit board and located between the circuit board and contact panel, part of light emitting tube element is located in the limiting hole, square spring element, one end of square spring element is in contact with contact panel, and the other end is set up on the circuit board and part is located in the welding hole, and square spring element surrounds light emitting tube element. The square touch spring structure realizes stable connection positioning through the welding hole and the limiting hole, the square spring element surrounds the light emitting tube element more closely, is favorable to signal conduction, and the volume is smaller, saves material, reduces the cost, and the deformation is easy to control when manufacturing, and the precision is higher.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing, and in particular to a square touch spring structure and a touch button. Background Technology

[0002] Currently, capacitive touch buttons in home appliance control panels mostly use a structure where sensing electrodes transmit capacitive signals to the circuit board via spring components, primarily using circular spiral springs. Touch buttons with integrated LEDs have wider applicability due to their adaptability to diverse application scenarios. In existing designs, the LEDs are typically placed inside the spiral spring or in its adjacent external area. However, placing the LED inside the spring is problematic because the circular spring's shape makes it difficult to effectively surround the LED, leading to compatibility issues and affecting the LED's display effect. Placing the LED outside the spring requires additional installation steps, increasing production costs and reducing the ease of structural design. Therefore, it is necessary to improve existing technologies. Utility Model Content

[0003] Therefore, it is necessary to provide a square touch spring structure to address the compatibility issue between the touch spring and the LED.

[0004] A square touch spring structure includes: a circuit board having soldering holes and limiting holes; a contact panel disposed on the circuit board; a light-emitting diode element disposed on the circuit board and located between the circuit board and the contact panel, with a portion of the light-emitting diode element located within the limiting holes; and a square spring element, one end of which abuts against the contact panel, and the other end of which is disposed on the circuit board and partially located within the soldering holes, the square spring element surrounding the light-emitting diode element.

[0005] This application discloses a square touch spring structure. Soldering holes on the circuit board provide stable mounting and connection positions for the square spring element, ensuring reliable connection between it and the circuit board and enabling stable transmission of touch signals. Limiting holes position the LED element, ensuring accurate mounting on the circuit board, preventing misalignment, and ensuring normal operation. The elastic contact design between the contact panel and the square spring element evenly transmits the pressure generated by the touch operation to the circuit board, enhancing the consistency of tactile feedback. The square spring element's enclosure structure provides physical protection for the LED element, reducing the risk of damage from foreign objects. Simultaneously, compared to a circular structure, the square structure better surrounds the LED element, making it easier for the user to touch the square spring element when touching the contact panel, thus transmitting the touch signal more reliably to the circuit board. While meeting the same elasticity performance requirements, the square spring structure reduces material redundancy compared to a circular spring structure, effectively reducing interference with other parts and costs. Furthermore, the square structure allows for more precise deformation control during manufacturing compared to a circular structure, improving manufacturing accuracy and meeting the needs of high-precision assembly scenarios.

[0006] In one embodiment, the contact panel has a first limiting protrusion at one end near the circuit board, which abuts against the end of the circuit board near the contact panel. This abutment between the first limiting protrusion and the circuit board further limits the displacement range of the contact panel, preventing it from shifting or shaking due to external forces, thus ensuring the accuracy of touch operation. This limiting structure also effectively disperses the impact force on the contact panel, preventing concentrated local external forces from damaging the circuit board and extending the overall lifespan of the structure. The first limiting protrusion ensures a suitable distance between the contact panel and the circuit board, preventing the contact panel from tilting or warping during use, and guaranteeing the stability and reliability of touch operation.

[0007] In one embodiment, the square spring element is soldered onto the circuit board. This soldering connection provides a reliable mechanical link between the square spring element and the circuit board, effectively resisting vibration and impact, and ensuring long-term stability of the connection between the square spring element and the circuit board. The soldering process creates a strong bond between the square spring element and the circuit board, achieving a reliable electrical connection between the spring structure and the circuit board circuitry, ensuring stable transmission of touch signals. Standardized implementation of the soldering process ensures consistent connection quality, reduces the risk of failure due to poor contact, and improves product reliability and lifespan.

[0008] In one embodiment, the contact panel is provided with multiple embossed characters spaced apart, and there are multiple light-emitting diode elements located below the embossed characters, with each embossed character corresponding to one of the multiple light-emitting diode elements. This correspondence between the embossed characters and the light-emitting diode elements ensures that the light emitted by the LEDs accurately penetrates the character outlines, forming clear function markings. Users can quickly identify different button functions visually. Simultaneously, the one-to-one correspondence between the light emitted by the multiple LEDs and the multiple embossed characters, along with the blocking effect of the embossed characters, reduces light crosstalk between adjacent buttons, making the display effect of each button more independent and clear, thus improving the overall clarity of the user interface. The close cooperation between the LEDs and the embossed characters, within the limited space of the contact panel, significantly improves the recognizability of the button area by utilizing both light and character indications, reducing the probability of user misoperation.

[0009] In one embodiment, the light-emitting element includes a touch light-emitting tube and a display light-emitting tube. A square spring element surrounds the touch light-emitting tube, and there are multiple touch light-emitting tubes spaced apart. The number of square spring elements is the same as the number of touch light-emitting tubes. The display light-emitting tube is located between two adjacent touch light-emitting tubes. The surrounding interaction of the touch light-emitting tubes and the square spring element provides immediate visual feedback for each touch operation, enhancing the certainty of the operation. The independent placement of the display light-emitting tubes allows for the display of additional information such as system status and operation prompts, enriching the device's information display capabilities. This partitioned design avoids mutual interference between light-emitting tubes with different functions, improving display clarity. The spaced arrangement of multiple touch light-emitting tubes and the staggered layout of the display light-emitting tubes create clear functional partitions for system status display and button operation instructions. Users can quickly identify the current operating area and system status through the light distribution, improving operational convenience.

[0010] In one embodiment, the touch-emitting diode includes a touch-emitting diode body and a second limiting protrusion. The second limiting protrusion is disposed on the touch-emitting diode body and located at the end of the touch-emitting diode body away from the contact panel. There are at least two second limiting protrusions, and the number of limiting holes is the same as the number of second limiting protrusions. The second limiting protrusions are adapted to the limiting holes and are at least partially located within the limiting holes. This matching design of the second limiting protrusions and limiting holes enables precise positioning and reliable fixation of the touch-emitting diode on the circuit board, preventing displacement or shaking during use and ensuring the accuracy of the light-emitting position. The multiple second limiting protrusions form a stable support structure, effectively resisting external impacts and protecting the touch-emitting diode body from damage. This limiting structure also simplifies the assembly process, improves production efficiency, and ensures consistent product quality.

[0011] In one embodiment, the end of the second limiting protrusion away from the circuit board extends into a latching protrusion, which abuts against the side of the circuit board away from the light-emitting diode element. The latching protrusion and the circuit board engage to form a secure mechanical connection, effectively preventing the touch-sensitive light-emitting diode from dislodging from the limiting hole and maintaining a stable connection even under significant external force. This latching structure also possesses a degree of elasticity, absorbing vibration and impact energy and reducing damage to the touch-sensitive light-emitting diode body. The design of the latching protrusion makes disassembly and replacement of the touch-sensitive light-emitting diode more convenient, facilitating product maintenance and upgrades.

[0012] In one embodiment, the square spring element includes a spring body and a welding leg. The welding leg is disposed on the spring body, passes through the welding hole, and is partially located within the welding hole. The portion of the welding leg passing through the welding hole extends away from the circuit board. This extended welding leg design increases the welding area with the circuit board, improves welding strength and stability, and reduces the risk of solder joint cracking. The extended portion facilitates accurate contact of the welding tool with the welding area, reducing welding difficulty and improving the operability and yield of the welding process. This design makes the square spring element easier to position and fix during welding, enhancing its resistance to displacement during welding and effectively reducing assembly problems caused by welding deviations.

[0013] In one embodiment, the spring body includes a first flat winding portion, a second flat winding portion, and a spiral rising portion. The first flat winding portion is disposed near the contact panel, and one end of the first flat winding portion near the contact panel abuts against the contact panel. The two ends of the spiral rising portion are respectively connected to the first flat winding portion and the second flat winding portion and are located between the first flat winding portion and the second flat winding portion. The second flat winding portion is disposed near the circuit board, and the soldered single leg is disposed on the second flat winding portion. When the square spring element is compressed, the end of the second flat winding portion near the circuit board abuts against the circuit board. The large contact area between the first flat section and the contact panel ensures even distribution of touch pressure, providing a soft and comfortable tactile feedback. The spiral rising section's structural design gives the spring body excellent elasticity, maintaining stable mechanical properties during compression and rebound, ensuring consistent tactile feedback. The contact between the second flat section and the circuit board increases the spring body's stability, reduces lateral displacement during compression, and improves operational precision. This three-section structure, through the reasonable coordination of each part, avoids excessive local deformation of the spring body under external force, allowing the spring to maintain overall structural integrity during repeated compression and extending the spring body's service life.

[0014] In one embodiment, the second flat winding portion extends a section relative to the spiral rising portion on the side where the welding foot is located. When the square spring element is compressed, the second flat winding portion partially abuts against the spiral rising portion. The first flat winding portion extends a section away from the light-emitting diode element on the side opposite to the welding foot. When the square spring element is compressed, the first flat winding portion abuts against the spiral rising portion. The extension of the second flat winding portion, through its position design relative to the spiral rising portion, avoids the solder pad of the welding foot being blocked by the light-emitting diode element, ensuring that the welding tool can directly contact the solder pad, improving the convenience of welding operations and the reliability of welding quality. This extension section abuts against the spiral rising portion when the spring is compressed, preventing excessive compression and deformation of the spring body through structural limiting. The extension of the first flat winding portion extends away from the light-emitting diode element, ensuring that the four top edges of the spring can completely fit against the inner surface of the touch panel after compression. The surface contact design achieves uniform transmission of touch pressure, ensuring the stability and reliability of the touch signal transmission path. Attached Figure Description

[0015] Figure 1 First perspective view of a square touch spring structure;

[0016] Figure 2 A second 3D view of a square touch spring structure;

[0017] Figure 3 Exploded view of a square touch spring structure;

[0018] Figure 4 A 3D view of the circuit board;

[0019] Figure 5 for Figure 4 Enlarged view of region A;

[0020] Figure 6 A 3D view of the contact panel;

[0021] Figure 7 A 3D diagram of a light-emitting diode (LED) component;

[0022] Figure 8 for Figure 7 Enlarged view of region B;

[0023] Figure 9 A 3D diagram of a square spring element;

[0024] Figure 10 for Figure 9 Enlarged view of region C.

[0025] The correspondence between the reference numerals and the component names is as follows:

[0026] 1. Circuit board, 101. Soldering hole, 102. Limiting hole;

[0027] 2. Contact panel, 21. First limiting protrusion;

[0028] 3 LED element, 31 touch LED, 311 touch LED body, 312 second limiting protrusion, 3121 fastening protrusion, 32 display LED;

[0029] 4. Square spring element, 41. Spring body, 411. First flat winding part, 412. Second flat winding part, 413. Spiral rising part, 42. Welded single leg. Detailed Implementation

[0030] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0032] The square touch spring structure of this utility model is described below with reference to the accompanying drawings.

[0033] like Figures 1 to 10 As shown, this embodiment discloses a square touch spring structure, which includes: a circuit board 1, the circuit board 1 having a soldering hole 101 and a limiting hole 102; a contact panel 2, the contact panel 2 being disposed on the circuit board 1; a light-emitting diode element 3, the light-emitting diode element 3 being disposed on the circuit board 1 and located between the circuit board 1 and the contact panel 2, with a portion of the light-emitting diode element 3 located within the limiting hole 102; and a square spring element 4, one end of the square spring element 4 abutting against the contact panel 2, the other end of the square spring element 4 being disposed on the circuit board 1 and partially located within the soldering hole 101, the square spring element 4 surrounding the light-emitting diode element 3.

[0034] This application discloses a square touch spring structure. The soldering hole 101 on the circuit board 1 provides a stable mounting and connection position for the square spring element 4, ensuring a reliable connection between it and the circuit board 1 and enabling stable transmission of touch signals. The limiting hole 102 positions the light-emitting diode element 3, ensuring its accurate mounting position on the circuit board 1, preventing offset, and ensuring normal operation. The elastic contact design between the contact panel 2 and the square spring element 4 can evenly transmit the pressure generated by the touch operation to the circuit board 1, enhancing the consistency of tactile feedback. The square spring element 4 provides physical protection for the light-emitting diode element 3, reducing the risk of damage to the light-emitting diode element 3 from external objects. Simultaneously, the square structure better surrounds the light-emitting diode element 3 compared to a circular structure, making it easier for the user to touch the square spring element 4 when touching the contact panel 2, thus transmitting the touch signal more reliably to the circuit board 1. While meeting the same elasticity performance requirements, the square spring structure reduces material redundancy compared to a circular spring structure, effectively reducing interference with other parts and costs. Furthermore, the square structure is easier to precisely control deformation during manufacturing compared to a circular structure, improving manufacturing accuracy and meeting the needs of high-precision assembly scenarios.

[0035] like Figures 1 to 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: a first limiting protrusion 21 is provided at one end of the contact panel 2 near the circuit board 1, and the first limiting protrusion 21 abuts against the end of the circuit board 1 near the contact panel 2. The abutting cooperation between the first limiting protrusion 21 and the circuit board 1 further limits the displacement range of the contact panel 2, preventing the contact panel 2 from shifting or shaking due to external forces, and ensuring the accuracy of touch operation; this limiting structure can also effectively disperse the impact force on the contact panel 2, avoid the concentrated action of local external forces to damage the circuit board 1, and extend the service life of the entire structure; the setting of the first limiting protrusion 21 ensures that a suitable distance is maintained between the contact panel 2 and the circuit board 1, preventing the contact panel 2 from tilting or warping during use, and ensuring the stability and reliability of touch operation.

[0036] In addition to the features of the above embodiments, this embodiment further specifies that: the square spring element 4 is soldered onto the circuit board 1. The soldering connection provides a reliable mechanical connection between the square spring element 4 and the circuit board 1, effectively resisting vibration and impact, and ensuring that the connection between the square spring element 4 and the circuit board 1 remains stable over a long period; the soldering process forms a firm bond between the square spring element 4 and the circuit board 1, achieving a reliable electrical connection between the spring structure and the circuit of the circuit board 1, ensuring stable transmission of touch signals; the standardized implementation of the soldering process ensures consistent connection quality, reduces the risk of failure due to poor contact, and improves the reliability and service life of the product.

[0037] In addition to the features of the above embodiments, this embodiment further specifies that: the contact panel 2 is provided with a plurality of embossed characters at intervals, and the number of light-emitting diode elements 3 is plurality of, with the plurality of light-emitting diode elements 3 located below the embossed characters, and the plurality of embossed characters corresponding one-to-one with the plurality of light-emitting diode elements 3. The corresponding layout of the embossed characters and the light-emitting diode elements 3 below allows the light emitted by the light-emitting diode elements 3 to accurately pass through the outline of the characters, forming clear function markings, and users can quickly identify the functions of different buttons visually; at the same time, the light emitted by the plurality of light-emitting diode elements 3 corresponds one-to-one with the plurality of embossed characters, and with the help of the blocking effect of the embossed characters, the light crosstalk between adjacent buttons is reduced, making the display effect of each button more independent and clear, and improving the clarity of the overall operation interface; the close cooperation between the light-emitting diode elements 3 and the embossed characters, within the limited space of the contact panel 2, utilizes the dual indication of light and characters, significantly improving the recognizability of the button area and reducing the probability of user misoperation.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the light-emitting element 3 includes a touch light-emitting tube 31 and a display light-emitting tube 32; a square spring element 4 surrounds the touch light-emitting tube 31; there are multiple touch light-emitting tubes 31, which are spaced apart; the number of square spring elements 4 is the same as the number of touch light-emitting tubes 31; and the display light-emitting tube 32 is located between two adjacent touch light-emitting tubes 31. The surrounding cooperation of the touch light-emitting tubes 31 and the square spring element 4 provides immediate visual feedback for each touch operation, enhancing the certainty of the operation; the independent setting of the display light-emitting tube 32 can be used to display additional information such as system status and operation prompts, enriching the information display capability of the device; this partitioned design avoids mutual interference between light-emitting tubes with different functions, improving display clarity; the spaced arrangement of multiple touch light-emitting tubes 31 and the staggered layout of the display light-emitting tubes 32 create clear functional partitions for system status display and button operation indication, allowing users to quickly identify the current operation area and system status through light distribution, improving operational convenience.

[0039] In addition to the features of the above embodiments, this embodiment further specifies that: the touch-emitting diode 31 includes a touch-emitting diode body 311 and a second limiting protrusion 312. The second limiting protrusion 312 is disposed on the touch-emitting diode body 311 and located at the end of the touch-emitting diode body 311 away from the contact panel 2. The number of second limiting protrusions 312 is at least two, and the number of limiting holes 102 is the same as the number of second limiting protrusions 312. The second limiting protrusions 312 are adapted to the limiting holes 102 and are at least partially located within the limiting holes 102. The adaptation design of the second limiting protrusions 312 and the limiting holes 102 realizes the precise positioning and reliable fixation of the touch-emitting diode 31 on the circuit board 1, preventing displacement or shaking during use and ensuring the accuracy of the light emission position. The arrangement of multiple second limiting protrusions 312 forms a stable support structure, which can effectively resist external impact and protect the touch-emitting diode body 311 from damage. This limiting structure also simplifies the assembly process, improves production efficiency, and ensures the consistency of product quality.

[0040] In addition to the features of the above embodiments, this embodiment further specifies that: the end of the second limiting protrusion 312 away from the circuit board 1 extends into a fastening protrusion 3121, which abuts against the side of the circuit board 1 away from the light-emitting tube element 3. The fastening engagement between the fastening protrusion 3121 and the circuit board 1 forms a firm mechanical connection, which can effectively prevent the touch light-emitting tube 31 from coming out of the limiting hole 102 and maintain a stable connection even when subjected to a large external force; this fastening structure also has a certain degree of elasticity, which can absorb vibration and impact energy and reduce damage to the touch light-emitting tube body 311; the design of the fastening protrusion 3121 makes the disassembly and replacement of the touch light-emitting tube 31 more convenient, facilitating product maintenance and upgrades.

[0041] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 9 and Figure 10As shown, in addition to the features of the above embodiments, this embodiment further defines: the square spring element 4 includes a spring body 41 and a welding leg 42. The welding leg 42 is disposed on the spring body 41, passes through the welding hole 101 and is partially located within the welding hole 101, and the portion of the welding leg 42 passing through the welding hole 101 extends away from the circuit board 1. The extended design of the welding leg 42 increases the welding area with the circuit board 1, improves the welding strength and stability, and reduces the risk of solder joint cracking; the extended portion facilitates accurate contact of the welding tool with the welding part, reduces the welding difficulty, and improves the operability and yield of the welding process; this design makes it easier to position and fix the square spring element 4 during the welding process, enhances the anti-displacement ability of the square spring element 4 during the welding process, and effectively reduces assembly problems caused by welding deviations.

[0042] In addition to the features of the above embodiments, this embodiment further specifies that: the spring body 41 includes a first flat winding portion 411, a second flat winding portion 412, and a spiral rising portion 413. The first flat winding portion 411 is disposed near the contact panel 2, and one end of the first flat winding portion 411 near the contact panel 2 abuts against the contact panel 2. The two ends of the spiral rising portion 413 are respectively connected to the first flat winding portion 411 and the second flat winding portion 412 and are located between the first flat winding portion 411 and the second flat winding portion 412. The second flat winding portion 412 is disposed near the circuit board 1, and a welded single leg 42 is disposed on the second flat winding portion 412. When the square spring element 4 is compressed, one end of the second flat winding portion 412 near the circuit board 1 abuts against the circuit board 1. The large-area contact between the first flat winding portion 411 and the contact panel 2 ensures even distribution of touch pressure, providing a soft and comfortable tactile feedback. The structural design of the spiral rising portion 413 gives the spring body 41 good elastic properties, enabling it to maintain stable mechanical characteristics during compression and rebound, ensuring consistent tactile feedback. The contact between the second flat winding portion 412 and the circuit board 1 increases the stability of the spring body 41, reduces lateral displacement during compression, and improves operational accuracy. This three-section structure, through the reasonable coordination of each part, avoids excessive local deformation of the spring body 41 under external force, allowing the spring to maintain overall structural integrity during repeated compression and extending the service life of the spring body 41.

[0043] In addition to the features of the above embodiments, this embodiment further specifies that: the side of the second flat winding portion 412 with the welding single foot 42 extends a section relative to the spiral rising portion 413, and the second flat winding portion 412 and the spiral rising portion 413 partially abut against each other when the square spring element 4 is compressed; the side of the first flat winding portion 411 opposite to the welding single foot 42 extends a section away from the light-emitting diode element 3, and the first flat winding portion 411 and the spiral rising portion 413 abut against each other when the square spring element 4 is compressed. The extension section of the second flat winding portion 412, through its positional design relative to the spiral rising portion 413, avoids the solder pad of the welding single foot 42 being blocked by the light-emitting diode element 3, ensuring that the welding tool can directly contact the solder pad, improving the convenience of welding operation and the reliability of welding quality; the extension section abuts against the spiral rising portion 413 when the spring is compressed, and the structure limits the excessive compression and deformation of the spring body 41. The extension of the first flat winding part 411 extends away from the light-emitting diode element 3, ensuring that the top four edges can be completely in contact with the inner surface of the touch panel after the spring is compressed. The surface contact design achieves uniform transmission of touch pressure, ensuring the stability and reliability of the touch signal transmission path.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A square touch spring structure, characterized in that, The square touch spring structure includes: Circuit board (1), wherein the circuit board (1) has a soldering hole (101) and a limiting hole (102); Contact panel (2), the contact panel (2) is disposed on the circuit board (1); A light-emitting diode element (3) is disposed on the circuit board (1) and located between the circuit board (1) and the contact panel (2), and a portion of the light-emitting diode element (3) is located within the limiting hole (102); A square spring element (4) is provided, one end of which abuts against the contact panel (2), and the other end of which is disposed on the circuit board (1) and partially located in the welding hole (101). The square spring element (4) surrounds the light-emitting tube element (3).

2. The square touch spring structure according to claim 1, characterized in that, The contact panel (2) has a first limiting protrusion (21) at one end near the circuit board (1), and the first limiting protrusion (21) abuts against the end of the circuit board (1) near the contact panel (2); And / or the square spring element (4) is soldered onto the circuit board (1).

3. The square touch spring structure according to claim 1, characterized in that, The contact panel (2) is provided with a plurality of embossed characters at intervals, and there are a plurality of light-emitting tube elements (3). The plurality of light-emitting tube elements (3) are located below the embossed characters, and the plurality of embossed characters correspond one-to-one with the plurality of light-emitting tube elements (3).

4. The square touch spring structure according to claim 1, characterized in that, The light-emitting element (3) includes a touch light-emitting tube (31) and a display light-emitting tube (32). The square spring element (4) is arranged around the touch light-emitting tube (31). There are multiple touch light-emitting tubes (31), which are spaced apart. The number of square spring elements (4) is the same as the number of touch light-emitting tubes (31). The display light-emitting tube (32) is located between two adjacent touch light-emitting tubes (31).

5. The square touch spring structure according to claim 4, characterized in that, The touch-emitting tube (31) includes a touch-emitting tube body (311) and a second limiting protrusion (312). The second limiting protrusion (312) is disposed on the touch-emitting tube body (311) and located at one end of the touch-emitting tube body (311) away from the contact panel (2). The number of the second limiting protrusion (312) is at least two. The number of the limiting holes (102) is the same as the number of the second limiting protrusions (312). The second limiting protrusion (312) is adapted to the limiting holes (102) and is at least partially located within the limiting holes (102).

6. The square touch spring structure according to claim 5, characterized in that, The second limiting protrusion (312) extends a fastening protrusion (3121) from one end away from the circuit board (1), and the fastening protrusion (3121) abuts against the side of the circuit board (1) away from the light-emitting diode element (3).

7. The square touch spring structure according to claim 1, characterized in that, The square spring element (4) includes a spring body (41) and a welding leg (42). The welding leg (42) is disposed on the spring body (41). The welding leg (42) passes through the welding hole (101) and is partially located inside the welding hole (101). The portion of the welding leg (42) passing through the welding hole (101) extends away from the circuit board (1).

8. The square touch spring structure according to claim 7, characterized in that, The spring body (41) includes a first flat winding portion (411), a second flat winding portion (412), and a spiral rising portion (413). The first flat winding portion (411) is disposed near the contact panel (2), and one end of the first flat winding portion (411) near the contact panel (2) abuts against the contact panel (2). The two ends of the spiral rising portion (413) are respectively connected to the first flat winding portion (411) and the second flat winding portion (412) and are located between the first flat winding portion (411) and the second flat winding portion (412). The second flat winding portion (412) is disposed near the circuit board (1), and the welding single leg (42) is disposed on the second flat winding portion (412). When the square spring element (4) is compressed, one end of the second flat winding portion (412) near the circuit board (1) abuts against the circuit board (1).

9. The square touch spring structure according to claim 8, characterized in that, The second flat winding portion (412) extends a section relative to the spiral rising portion (413) on the side where the welding single leg (42) is located. When the square spring element (4) is compressed, the second flat winding portion (412) partially abuts against the spiral rising portion (413). The first flat winding portion (411) extends a section away from the light-emitting tube element (3) on the side opposite to the welding single leg (42). When the square spring element (4) is compressed, the first flat winding portion (411) abuts against the spiral rising portion (413).

10. A touch button, the touch button comprising: The square touch spring structure according to any one of claims 1 to 9.

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