General feeder for SMT (Surface Mount Technology) tact switch and tact switch device

Abstract

The utility model relates to the technical field of SMT (Surface Mount Technology) feeding devices, in particular to a universal feeder for an SMT light touch switch and a light touch switch device. A universal feeder for SMT touch switches comprises a feeder body, a feeding groove and a discharging port are formed in the feeder body, an elastic supporting piece is arranged at the end, close to the discharging port, of the feeding groove and located at the bottom, a height limiting cover is arranged at the top of the discharging port, and the height of the discharging port is the distance between the elastic supporting piece and the height limiting cover; the pull rope is tightly hooked at the bottom of the elastic supporting sheet; and the tightening wheel is arranged on the side wall of the feeder body and located below the elastic supporting piece, and the end, away from the elastic supporting piece, of the pull rope is wound around the tightening wheel. The height of the discharging port is adjusted, so that the device is suitable for feeding of components of different specifications and sizes, the universality is high, material changing production during machining is facilitated, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of SMT feeding devices, in particular to a universal feeder for SMT light touch switches and a light touch switch device. Background Art

[0002] A touch switch is usually an electronic component that can be switched by lightly touching or pressing. When manufacturing a touch switch, the SMT (surface mount technology) patch process is often used. The SMT patch process is a surface assembly technology for electronic components that allows components to be directly soldered to the surface of the PCB (printed circuit board) without the need for traditional pins or pins. This process helps to reduce the size of components, improve manufacturing efficiency, and achieve a higher degree of integration. Therefore, many touch switches are manufactured using the SMT patch process, specifically, the components on the main body of the touch switch (including the switch mechanism and circuit) are accurately mounted and soldered to the PCB board of the touch switch through the SMT patch process. After the mounting and soldering are completed, the main part of the touch switch on the PCB will be combined with other components (such as housing, buttons, etc.) to form the final touch switch device. Therefore, it can be said that the touch switch body processed on the PCB board is the core part of the entire touch switch to realize the switch function and circuit connection.

[0003] With the advancement of science and technology and the development of society, the replacement cycle of electronic products is becoming shorter and shorter. Therefore, higher requirements are also put forward for the key technology in the electronics manufacturing industry - surface mount technology. With the continuous improvement of the speed and accuracy of SMT placement machines, people have paid more and more attention to the design and installation of placement machine feeders in recent years. Since the feeder can provide chip components to the placement head in a certain pattern and order for accurate and convenient picking, the feeder has been widely used in the SMT manufacturing industry. According to the different packaging of components, feeders can usually be divided into several categories such as strip, tube, and disc, among which strip feeders are the most widely used. (SMT is the abbreviation of surface assembly technology or surface mount technology "Surface Mounted Technology")

[0004] In the strip packaging category, due to the different shapes and sizes of different components, the feeder cannot be used for feeding components of different sizes. Only matching feeders can be used for components of different specifications and sizes. It has low versatility and poor applicability, which is not conducive to material change production and leads to high production costs.

[0005] Therefore, it is now urgent to design an SMT feeder that can solve one or more of the above problems to meet the production needs of touch switches. Utility Model Content

[0006] The purpose of the utility model is to provide a universal feeder for SMT touch switches and a touch switch device in view of the deficiencies in the prior art, aiming to improve the versatility and applicability of the feeder, so as to be more conducive to the feeding of components of different specifications and sizes, and thus more suitable for the production and manufacturing needs of touch switches.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme: a universal feeder for SMT touch switches, comprising: a feeder body, a pull rope and a tightening wheel, wherein:

[0008] The feeder body is provided with a feed trough and a discharge port, an elastic support sheet is provided at one end of the feed trough close to the discharge port and at the bottom thereof, a limited height cover is provided at the top of the discharge port, and the height of the discharge port is the distance between the elastic support sheet and the limited height cover;

[0009] A drawstring, hooked tightly to the bottom of the elastic support sheet;

[0010] The tightening wheel is arranged on the side wall of the feeder body and is located below the elastic support sheet. The end of the pull rope away from the elastic support sheet is wound on the tightening wheel. Thus, the height adjustment of the discharge port is realized to be suitable for the feeding of components of different specifications and sizes. The versatility is high, which is conducive to the material replacement during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, it can also be used for the feeding of non-standard components, further improving versatility.

[0011] As a further solution of the utility model: the feeder also includes a tight-fitting pin, which is coaxially connected to the tightening wheel and interference-hinged to the side wall of the feeder body, and the tight-fitting force of the tight-fitting pin on the tightening wheel is greater than the elastic force of the elastic support sheet.

[0012] As a further solution of the utility model: the tightening wheel is provided with a hand crank.

[0013] As a further solution of the utility model: a hexagonal groove is provided on a side of the tightening wheel away from the feeder body and located at the axis.

[0014] As a further solution of the utility model: a rope collecting groove is concavely provided in the middle of the side wall of the tightening wheel, and a ratchet is coaxially provided at one end of the tightening wheel;

[0015] The feeder also includes a pawl member and a tension spring, the pawl member includes a pawl portion at one end and a pressing portion at the other end, the pawl member is hinged to the side wall of the feeder body at a position between the pawl portion and the pressing portion, one end of the tension spring is hooked on the side wall of the feeder body, and the other end is hooked on the pawl portion, and the tension spring tightens the pawl portion to engage with the ratchet wheel.

[0016] As a further solution of the utility model: the feeder also includes a coil spring, and the elastic support sheet is hinged to the bottom of the feed trough through the coil spring.

[0017] A touch switch device comprises a touch switch assembly, a PCB board and a fixing bracket, wherein the PCB board is electrically connected to the touch switch, and the fixing bracket is used to fix the touch switch assembly on the PCB board; the touch switch assembly comprises: a button cap, which is located at the top of the touch switch assembly and is used to convert into an electrical signal when pressed;

[0018] The contact spring is a metal spring located under the button cap and is used to close the circuit preset on the PCB board when the button cap is pressed; and

[0019] Conductive rubber ring, surrounding the contact spring, is used to prevent dust and water;

[0020] Among them, the contact spring is fed by an SMT feeder and installed on the PCB board by an SMT placement machine; the SMT feeder is the universal feeder of the SMT touch switch described in any one of the above.

[0021] As a further solution of the utility model: the touch switch device also includes:

[0022] The microcontrol unit is installed in the middle of the PCB board and is electrically connected to the touch switch assembly to process key signals;

[0023] Power management IC, installed on the PCB, responsible for power distribution and management; and

[0024] The communication interface IC is installed on the PCB and is responsible for communicating with other devices.

[0025] Beneficial effects of the utility model:

[0026] The technical solution of the utility model is to rotate the tightening wheel to reel in or loosen the drawstring. When the drawstring is reeled in, the elastic support sheet is pulled downward to deepen the height of the discharge port; when the drawstring is loosened, the elastic support sheet rebounds to reduce the height of the discharge port. The height adjustment of the discharge port is achieved to be suitable for the feeding of components of different specifications and sizes. It has high versatility, is conducive to material replacement during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, this solution can also be applied to the feeding of non-standard components, further improving versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the plane structure and an enlarged schematic diagram of the local structure of the utility model.

[0028] Figure 2 It is a schematic diagram of the local structure when the pull rope of the utility model pulls the elastic support sheet downward.

[0029] Figure 3 It is a schematic structural diagram of the ratchet wheel and the pawl member of the utility model in a separated state.

[0030] Figure 4 It is a schematic structural diagram of the ratchet wheel and the pawl member of the utility model in the engaged state.

[0031] Reference numerals include:

[0032] 1—Feeder body,

[0033] 11—feeding trough, 12—discharging port, 13—elastic supporting sheet, 14—height limiting cover, 15—storage bin, 16—roller shaft;

[0034] 2—pull rope;

[0035] 3—Tightening wheel,

[0036] 31 - tight fitting nail, 32 - hand crank, 33 - ratchet, 34 - pawl, 35 - tension spring, 36 - hexagonal slot,

[0037] 341 - ratchet portion, 342 - pressing portion. DETAILED DESCRIPTION

[0038] The utility model is described in detail below with reference to the accompanying drawings.

[0039] like Figures 1 to 4 As shown, in an embodiment of the utility model, a universal feeder for SMT touch switches is provided, comprising: a feeder body 1, a pull rope 2 and a tightening wheel 3. Among them:

[0040] The feeder body 1 is provided with a feed trough 11 and a discharge port 12. An elastic support sheet 13 is provided at one end of the feed trough 11 close to the discharge port 12 and at the bottom thereof. A limited height cover 14 is provided at the top of the discharge port 12. The height of the discharge port 12 is the distance between the elastic support sheet 13 and the limited height cover 14.

[0041] A drawstring 2, hooked tightly to the bottom of the elastic support sheet 13;

[0042] The take-up wheel 3 is disposed on the side wall of the feeder body 1 and is located below the elastic support sheet 13 . One end of the pull rope 2 away from the elastic support sheet 13 is rolled up on the take-up wheel 3 .

[0043] The technical solution of the utility model is to rotate the tightening wheel 3 to reel in the drawstring 2 or release the drawstring 2. When the drawstring 2 is reeled in, the elastic support sheet 13 is pulled downward to deepen the height of the discharge port 12; when the drawstring 2 is released, the elastic support sheet 13 rebounds to reduce the height of the discharge port 12. The height adjustment of the discharge port 12 is achieved to be suitable for the feeding of components of different specifications and sizes. It has high versatility, is conducive to material replacement during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, this solution can also be applied to the feeding of non-standard components, further improving versatility.

[0044] It should be noted that the height limiting cover 14 is provided because during the production process, it is necessary to ensure that the tops of the components at the discharge port 12 are lower than a predetermined height, so as to be suitable for sensor identification and facilitate the robot to pick up the components. Therefore, it is necessary to provide the height limiting cover 14 to prevent the tops of the components from being higher than the height limited by the height limiting cover 14 during feeding. Therefore, the inventors have discovered that in order to increase the height of the discharge port 12, the discharge port 12 can only be deepened downwards, but not raised upwards. In this solution, the elastic support sheet 13 is provided at the bottom of the feed trough 11 and is pressed downwards, thereby satisfying the requirement of deepening the discharge port 12 downwards, and will not be affected by raising the height upwards.

[0045] In one embodiment, the feeder further includes a tight-fitting nail 31, which is coaxially connected to the tightening wheel 3 and hinged to the side wall of the feeder body 1 by interference, and the tight-fitting force of the tight-fitting nail 31 on the tightening wheel 3 is greater than the elastic force of the elastic support sheet 13. Specifically, no matter how tightly the tightening wheel 3 winds the pull rope 2, when the tightening force on the tightening wheel 3 is withdrawn, the tight-fitting force of the tight-fitting nail 31 on the tightening wheel 3 can overcome and offset the resilience of the elastic support sheet 13, so that the elastic support sheet 13 can continue to maintain the adjusted height position. Furthermore, the height adjustment of the discharge port 12 is realized to be suitable for the feeding of components of different specifications and sizes, with high versatility, which is conducive to material replacement production during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, it can also be applied to the feeding of non-standard components, further improving versatility.

[0046] In another embodiment, the tightening wheel 3 is provided with a hand crank 32. Specifically, the tightening wheel 3 is rotated by shaking the hand crank 32, so that the tightening wheel 3 reels or loosens the pull rope 2 to adjust the height of the elastic support sheet 13. In addition, the height adjustment of the discharge port 12 is realized to be suitable for the feeding of components of different specifications and sizes, with high versatility, which is conducive to the replacement of materials during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, it can also be suitable for the feeding of non-standard components, further improving versatility.

[0047] In another embodiment, a hexagonal slot 36 is provided on one side of the tightening wheel 3 away from the feeder body 1 and at the position of the axis. Specifically, the tightening wheel 3 is rotated by inserting a hexagonal screwdriver into the hexagonal slot 36, so that the tightening wheel 3 reels or releases the pull rope 2 to adjust the height of the elastic support sheet 13. Furthermore, the height adjustment of the discharge port 12 is achieved to be suitable for the feeding of components of different specifications and sizes, with high versatility, which is conducive to material replacement during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, it can also be used for the feeding of non-standard components, further improving versatility.

[0048] In another embodiment, a rope collecting groove is concavely provided in the middle of the side wall of the tightening wheel 3, and a ratchet 33 is coaxially provided at one end of the tightening wheel 3;

[0049] The feeder also includes a pawl member 34 and a tension spring 35. The pawl member 34 includes a pawl portion 341 at one end and a pressing portion 342 at the other end. The pawl member 34 is located between the pawl portion 341 and the pressing portion 342 and is hinged to the side wall of the feeder body 1. One end of the tension spring 35 is hooked on the side wall of the feeder body 1, and the other end is hooked on the pawl portion 341. The tension spring 35 tightens the pawl portion 341 to engage with the ratchet wheel 33. The tightening wheel 3 and the ratchet wheel 33 rotate synchronously. Specifically:

[0050] When the height of the discharge port 12 is deepened, the take-up wheel 3 is rotated to reel in the drawstring 2, so that the drawstring 2 pulls the elastic support sheet 13 downward, thereby increasing the height of the discharge port 12. The one-way rotation of the ratchet wheel 33 of the take-up wheel 3 is utilized so that the drawstring 2 can only be tightened but cannot be stretched or loosened, so as to avoid the rebound of the elastic support sheet 13, thereby locking the take-up wheel 3 and keeping the position of the elastic support sheet 13 unchanged.

[0051] When the height of the discharge port 12 is reduced, the pressing portion 342 of the ratchet member 34 is pressed to push the ratchet member 34 to swing along the hinge point, so that the ratchet portion 341 of the ratchet member 34 and the ratchet wheel 33 of the tightening wheel 3 are separated. At this time, the ratchet wheel 33 of the tightening wheel 3 has no clamping resistance, and the elastic support sheet 13 rebounds, so that the pull rope 2 pulls the tightening wheel 3 to rotate and stretches a certain distance from the rope collection groove of the tightening wheel 3. When the elastic support sheet 13 rebounds to a predetermined height, the pressing force applied to the pressing portion 342 of the ratchet member 34 is cancelled, so that the tension spring 35 re-tightens the ratchet portion 341 of the ratchet member 34 and re-engages with the ratchet wheel 33 of the tightening wheel 3, thereby maintaining the elastic support sheet 13 to a predetermined height. In addition, the height adjustment of the discharge port 12 is realized to be suitable for the feeding of components of different specifications and sizes, with high versatility, which is conducive to the material replacement production during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, it can also be used for the supply of non-standard components, further improving versatility.

[0052] In some embodiments, the feeder further includes a coil spring, and the elastic support sheet 13 is hinged to the bottom of the feed trough 11 through the coil spring. Specifically, the elastic support sheet 13 is formed with a rebound force by the coil spring, and the coil spring generates a winding force when the pull rope 2 pulls the elastic support sheet 13 downward, and the coil spring releases the winding force when the pull rope 2 is released, causing the elastic support sheet 13 to rebound and rise. Furthermore, the height adjustment of the discharge port 12 is achieved to be suitable for the feeding of components of different specifications and sizes, with high versatility, which is conducive to material replacement production during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, it can also be used for the feeding of non-standard components, further improving versatility. During use: place the coil of material in strip packaging onto the roller 16 of the storage bin 15 of the feeder body 1, stretch the outermost ring of the coil into the feed slot 11 and finally place it at the discharge port 12, and adjust the height of the elastic support sheet 13 by controlling the pull rope 2 through the roller, so that the height of the discharge port 12 is suitable for the height of the components on the coil, and the manipulator on the production line takes the components on the tape at the discharge port 12 and performs patch processing. This solution realizes the height adjustment of the discharge port 12 to be suitable for the feeding of components of different specifications and sizes, has high versatility, is conducive to material replacement production during processing, improves production efficiency, reduces production costs, and is more suitable for the production and manufacturing needs of touch switches. In addition, it can also be used for the feeding of non-standard components, further improving versatility.

[0053] A touch switch device includes a touch switch assembly, a PCB board and a fixing bracket. The PCB board is electrically connected to the touch switch, and the fixing bracket is used to fix the touch switch assembly on the PCB board. The touch switch assembly includes a button cap, a contact spring, and a conductive rubber ring. As a part of the touch switch device, the PCB board not only provides a basis for circuit connection, but also fixes and supports the touch switch assembly. Among them:

[0054] Button cap: Located at the top of the touch switch, it is the part that the user directly touches and converts into an electrical signal when pressed.

[0055] Contact spring: Located under the button cap, it is made of metal material and is responsible for closing the preset circuit on the PCB board when the button cap is pressed.

[0056] Conductive rubber ring: surrounds the contact spring to provide dust and water protection, while ensuring accurate conductivity of the contact spring.

[0057] Fixed bracket: used to fix the touch switch assembly on the PCB board to ensure the stability and correct relative position of each component.

[0058] PCB board: In addition to being part of the touch switch, it also integrates circuit design, including but not limited to resistors, capacitors, microcontroller units (MCUs), communication interfaces, etc. The PCB board is preset with conductive paths to achieve circuit closure when the button cap is pressed, as well as electrical connection with external devices.

[0059] Microcontroller unit (MCU): Fixedly installed in the middle of the PCB board, electrically connected to the touch switch assembly, used to process key signals and execute preset functions.

[0060] Power management IC and communication interface IC: They are fixedly installed at different positions of the PCB board. The power management IC is responsible for the distribution and management of power, and the communication interface IC (such as USB, Bluetooth, etc.) is responsible for realizing communication with other devices.

[0061] When force is applied to the touch switch assembly through the button cap, the contact spring contacts the corresponding conductive path on the PCB board, thereby closing the circuit. After receiving this signal, the MCU performs corresponding operations according to the preset program, such as sending signals, opening or closing circuits, etc. The power management IC ensures stable power supply to the circuit, and the communication interface IC supports data exchange between devices. This design has high integration and reliability, and is suitable for use as an input device in a variety of electronic devices.

[0062] The production and assembly process of the touch switch device:

[0063] Step 1: Design and manufacture PCB board

[0064] First, computer-aided design (CAD) software is used to design the circuit diagram and layout of the PCB board according to the functional requirements of the touch switch. During the design process, it is necessary to ensure that the PCB board has enough space to install components such as button caps, contact springs, MCU, power management IC and communication interface IC. After the design is completed, the circuit pattern is transferred on the copper clad board through photolithography technology, and then the excess copper is removed by chemical etching to form a circuit path. The drilling process is used to make mounting holes and conductive connection points for subsequent component installation and electrical connection.

[0065] Step 2: SMT patch processing

[0066] Next, electronic components such as MCU, power management IC, communication interface IC, etc. are mounted on the PCB board using surface mount technology (SMT). In the SMT patch processing, the SMT touch switch universal feeder is first used to automatically supply components to the placement machine. The placement machine accurately places the components on the corresponding positions of the PCB board according to the program settings. This process requires high precision to ensure the correct placement and orientation of the components. After placement, the PCB board passes through the reflow soldering furnace, and the high temperature causes the solder paste of the component solder joints to melt and re-solidify, thereby firmly soldering the components to the PCB board.

[0067] Step 3: Install the fixed bracket

[0068] The fixing bracket is a key component in the touch switch. It not only provides physical support to ensure the accurate alignment and stability of the button cap and contact spring, but also protects the internal components from the direct impact of external forces. Before the contact spring and conductive rubber ring are installed, the fixing bracket is first installed to the designated position on the PCB board. This is usually done by screws or welding to ensure that the bracket is tightly combined with the PCB board, providing a stable foundation for the subsequent installation of the button cap and contact spring.

[0069] Step 4: Pre-assembly of the touch switch assembly

[0070] The core component of the touch switch assembly, the contact spring, needs to be assembled in advance. The contact spring is the key to realizing the switch function. It is usually made of highly elastic metal material and can quickly return to its original state after pressing the button cap. Before assembling the contact spring, first place the conductive rubber ring at the specified position on the PCB board. The conductive rubber ring is used to ensure a good electrical connection between the contact spring and the PCB board and prevent short circuits.

[0071] Step 5: Installation of touch switch assembly

[0072] The process of installing the contact springs on the PCB board also uses SMT technology, which requires the use of SMT touch switch universal feeders and SMT placement machines. The contact springs are accurately placed above the conductive rubber ring, and then their position is stabilized by welding or other mechanical fixing methods. The button cap is installed on the top of the contact spring, usually fixed to the PCB board or fixed bracket by pressing or snapping. The fixed bracket not only provides a stable mounting platform for the button cap, but also ensures the accuracy and consistency of the key operation.

[0073] Step 6: Electrical connection and testing

[0074] After all components are installed, the electrical connections are checked and the touch switch device is tested for functionality. This step verifies that all components are installed correctly and that the touch switch is functioning properly. During the test, the user's key operation is simulated, the reaction of the contact spring and button cap is detected, and the electrical signal is ensured to be correctly transmitted on the PCB board.

[0075] In summary, it can be seen that the utility model has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0076] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A universal feeder for SMT touch switches, characterized in that: include: A feeder body (1) is provided with a feed trough (11) and a discharge port (12); an elastic support sheet (13) is provided at one end of the feed trough (11) close to the discharge port (12) and at the bottom thereof; a limited height cover (14) is provided at the top of the discharge port (12); and the height of the discharge port (12) is the distance between the elastic support sheet (13) and the limited height cover (14); A drawstring (2) hooked tightly to the bottom of the elastic support sheet (13); as well as A take-up wheel (3) is arranged on the side wall of the feeder body (1) and is located below the elastic support sheet (13); one end of the pull rope (2) away from the elastic support sheet (13) is rolled up on the take-up wheel (3).

2. The universal feeder for SMT touch switches according to claim 1, characterized in that: The feeder further comprises a tight-fitting pin (31), which is coaxially connected to the tightening wheel (3) and hinges the tightening wheel (3) to the side wall of the feeder body (1) by interference fit, and the tight-fitting force of the tight-fitting pin (31) on the tightening wheel (3) is greater than the elastic force of the elastic support sheet (13).

3. The universal feeder for SMT touch switches according to claim 1, characterized in that: The tightening wheel (3) is provided with a hand crank (32).

4. The universal feeder for SMT touch switches according to claim 1, characterized in that: A hexagonal groove (36) is provided on one side of the tightening wheel (3) away from the feeder body (1) and located at the axis.

5. The universal feeder for SMT touch switches according to claim 1, characterized in that: A rope collecting groove is concavely arranged in the middle of the side wall of the tightening wheel (3), and a ratchet wheel (33) is coaxially arranged at one end of the tightening wheel (3); The feeder also includes a pawl member (34) and a tension spring (35), wherein the pawl member (34) includes a pawl portion (341) at one end and a pressing portion (342) at the other end, and the pawl member (34) is hinged to the side wall of the feeder body (1) at a position between the pawl portion (341) and the pressing portion (342), and one end of the tension spring (35) is hooked on the side wall of the feeder body (1), and the other end is hooked on the pawl portion (341), and the tension spring (35) tightens the pawl portion (341) to engage with the ratchet wheel (33).

6. The universal feeder for SMT touch switches according to claim 1, characterized in that: The feeder also includes a coil spring, and the elastic support sheet (13) is hinged to the bottom of the feed trough (11) via the coil spring.

7. A touch switch device, characterized in that: The touch switch assembly comprises a tactile switch assembly, a PCB board and a fixing bracket, wherein the PCB board is electrically connected to the touch switch assembly, and the fixing bracket is used to fix the touch switch assembly on the PCB board; the touch switch assembly comprises: a button cap, which is located at the top of the touch switch assembly and is used to convert into an electrical signal when pressed; The contact spring is a metal spring located under the button cap and is used to close the circuit preset on the PCB board when the button cap is pressed; and Conductive rubber ring, surrounding the contact spring, is used to prevent dust and water; The contact spring is fed by an SMT feeder and mounted on a PCB by an SMT placement machine; the SMT feeder is a universal feeder for SMT touch switches as claimed in any one of claims 1 to 6.

8. The touch switch device according to claim 7, characterized in that: The touch switch device also includes: The microcontrol unit is installed in the middle of the PCB board and is electrically connected to the touch switch assembly to process key signals; Power management IC, installed on the PCB, responsible for power distribution and management; and The communication interface IC is installed on the PCB and is responsible for communicating with other devices.

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