A splash-proof membrane switch remote control box

Abstract

This utility model discloses an anti-spatter membrane switch remote control box, belonging to the field of welding protection technology. It includes a remote control box containing a printed circuit board. A sheet metal panel is mounted at the opening on the front of the box, and a membrane switch is mounted on the front of the sheet metal panel. A light-transmitting protective plate is placed between the sheet metal panel and the printed circuit board. A potentiometer is mounted on the sheet metal panel, and a knob is mounted on the front end of the potentiometer after it passes through the membrane switch. This utility model effectively resists welding spatter corrosion and protects the internal printed circuit board of the remote control, solving the problem of frequent damage to the internal printed circuit board of a digital display wire feeder remote control panel due to welding spatter, thereby improving the durability and reliability of the digital display wire feeder in harsh welding environments.

Description

Technical Field

[0001] This utility model relates to a splash-proof membrane switch remote control box, belonging to the field of welding protection technology. Background Technology

[0002] In the welding field, wire feeders are key equipment for achieving stable and efficient welding. To facilitate real-time monitoring and precise adjustment of welding parameters (such as wire feed speed, voltage, and current) by operators, modern wire feeders are generally equipped with integrated, digital remote control panels. These panels typically include a display screen, buttons, and an internal printed circuit board (P-board). However, due to the inherent characteristics of the welding process, high-temperature molten metal spatter is inevitably generated during arc welding. Since the wire feeder body needs to be installed close to the welding heat source (welding torch or workpiece) to achieve stable wire delivery, its attached remote control panel is inevitably within the reach of spatter. Currently widely used digital display wire feeders often use a plastic film panel (surface film) + PC protective board as an anti-spatter protection layer for their remote control panels; especially to ensure user comfort, most wire feeder button areas only have the surface film for protection. Under actual working conditions, continuously spattering high-temperature molten metal particles can easily adhere to and burn through this film panel. Once the surface film is damaged, subsequent spatter will directly impact, melt, or short-circuit the printed circuit board (P-board) beneath the panel. This damage is cumulative and irreversible, leading to P-board malfunction. The consequence is that users frequently face the need for expensive P-board replacements, resulting not only in high spare parts and maintenance costs, but also equipment downtime, production interruptions, and severely impacting the continuity of welding operations, production efficiency, and user experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a splash-proof membrane switch remote control box that can effectively resist the corrosion of welding spatter, protect the internal printed circuit board of the remote control, solve the problem that the internal printed circuit board of the digital display wire feeder remote control panel is easily damaged by welding spatter, and improve the durability and reliability of the digital display wire feeder in harsh welding environments.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A splash-proof membrane switch remote control box includes a remote control box housing, a printed circuit board disposed inside the remote control box housing, a panel sheet metal mounted at the opening on the front of the remote control box housing, a membrane switch disposed on the front of the panel sheet metal, a light-transmitting protective plate disposed between the panel sheet metal and the printed circuit board, a potentiometer mounted on the panel sheet metal, and a knob mounted on the front end of the potentiometer after passing through the membrane switch.

[0006] The remote control box housing is provided with a recessed mounting structure, which is used to fix and support the panel sheet metal.

[0007] The panel sheet metal has a display hole corresponding to the light-transmitting position on the membrane switch, and the panel sheet metal has a card swiping hole corresponding to the card swiping position on the membrane switch. The front of the light-transmitting protective plate is provided with an integrally connected first protrusion and second protrusion, which are respectively inserted into the display hole and the card swiping hole.

[0008] The upper and lower parts of the panel sheet metal are respectively provided with wire holes and potentiometer mounting holes. The wire holes are used for the connection wires of the membrane switch to pass through, and the potentiometer mounting holes are used for mounting the potentiometer.

[0009] The back of the panel sheet metal is provided with solder resist studs, the light-transmitting protective plate is provided with positioning holes, and the back of the light-transmitting protective plate is provided with limit posts corresponding to the positioning holes. The solder resist studs pass through the positioning holes and limit posts, and then pass through the printed circuit board and are locked. The front of the printed circuit board contacts the limit posts.

[0010] The membrane switch has a pressure-sensitive adhesive layer pre-placed on its back, and the membrane switch is attached to the sheet metal surface of the panel through the pressure-sensitive adhesive layer.

[0011] The light-transmitting protective panel is made of polycarbonate.

[0012] The panel sheet metal is connected to the remote control box housing by bolts.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a splash-proof membrane switch remote control box housing. A membrane switch is provided on the front of the panel sheet metal. A light-transmitting protective plate is provided between the panel sheet metal and the printed circuit board. The design of the light-transmitting protective plate can effectively resist the corrosion of welding spatter and protect the internal printed circuit board of the remote control. It solves the problem that the internal printed circuit board of the digital display wire feeder remote control panel is easily damaged by welding spatter, which leads to frequent damage. It can improve the durability and reliability of the digital display wire feeder in harsh welding environments. At the same time, by replacing the membrane switch, the replacement of the printed circuit board is avoided, thereby reducing the user's maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a splash-proof membrane switch remote control box housing according to this utility model;

[0015] Figure 2 This is a schematic diagram of the sheet metal panel structure in this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the light-transmitting protective plate in this utility model;

[0017] The reference numerals in the diagram are as follows: 1-Membrane switch; 2-Sheet metal panel; 3-Light-transmitting protective plate; 4-Printed circuit board; 5-Remote control box housing; 6-Knob; 7-Polypotentiometer; 21-Display hole; 22-Card swipe hole; 23-Wire hole; 24-Solder resist stud; 25-Polypotentiometer mounting hole; 31-First protrusion; 32-Second protrusion; 33-Positioning hole; 34-Limit post. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0019] Example 1

[0020] like Figure 1 As shown, this utility model provides a splash-proof membrane switch remote control box housing, including a membrane switch 1, a sheet metal panel 2, a light-transmitting protective plate 3, a printed circuit board 4, a remote control box housing 5, a knob 6, and a potentiometer 7. The printed circuit board 4 is disposed inside the remote control box housing 5. The sheet metal panel 2 is installed at the opening on the front of the remote control box housing 5, and the membrane switch 1 is disposed on the front of the sheet metal panel 2. The light-transmitting protective plate 3 is disposed between the sheet metal panel 2 and the printed circuit board 4. All function buttons of the remote control box housing 5 are integrated into the one-piece membrane switch 1. The membrane switch 1 has specific light-transmitting areas corresponding to the digital display positions on the printed circuit board 4.

[0021] This invention employs an independent potentiometer design. A potentiometer 7 is mounted on the panel sheet metal 2, with a knob 6 installed after the potentiometer 7 passes through the membrane switch 1. The potentiometer 7 is separated from the printed circuit board 4 and independently mounted on the lower side of the remote control housing 5. The knob 6 connects to the adjustment shaft of the independent potentiometer 7 through an opening on the remote control housing 5. The significant advantage of this design is that when the potentiometer 7 fails due to wear or other reasons, only the potentiometer 7 component needs to be replaced to restore function, eliminating the need to replace the entire expensive printed circuit board 4, significantly reducing maintenance costs and downtime.

[0022] The working process of this utility model is as follows: When the remote control box housing 5 is exposed to spatter, the spatter first lands on the membrane switch 1, at which point the membrane switch 1 can still be used normally. As the soldering time increases, more and more spatter accumulates, which may cause the spatter to burn through the membrane switch 1. Since the membrane switch 1 is only relatively thin at the viewing window, when the viewing window is burned through, most of the spatter is blocked by the panel sheet metal 2, and a small portion is blocked by the inner light-transmitting protective plate 3. At this point, the membrane switch 1 is damaged and needs to be removed from the panel sheet metal 2, the membrane switch 1 needs to be peeled off, and a new membrane switch 1 needs to be used for replacement. The cost of the membrane switch 1 is much lower than replacing the printed circuit board 4, thus reducing the user's maintenance costs.

[0023] This invention can effectively resist the corrosion of welding spatter and protect the internal printed circuit board of the remote control, solving the problem of frequent damage to the internal printed circuit board of the remote control panel of the digital display wire feeder caused by welding spatter. It can improve the durability and reliability of the digital display wire feeder in harsh welding environments. At the same time, by replacing the membrane switch, the replacement of the printed circuit board is avoided, thereby reducing the user's maintenance costs.

[0024] Example 2

[0025] like Figure 1 As shown, this utility model provides a splash-proof membrane switch remote control box housing, including a membrane switch 1, a panel sheet metal 2, a light-transmitting protective plate 3, a printed circuit board 4, a remote control box housing 5, a knob 6, and a potentiometer 7. The printed circuit board 4 is disposed inside the remote control box housing 5. The panel sheet metal 2 is installed at the opening on the front of the remote control box housing 5. The remote control box housing 5 is designed with a recessed mounting structure. The panel sheet metal 2 and the remote control box housing 5 are connected by bolts. This recessed mounting structure is specifically designed to precisely fix and support the panel sheet metal 2, ensuring convenient installation, accurate positioning, and overall stability of the panel assembly. The membrane switch 1 is disposed on the front of the panel sheet metal 2. The light-transmitting protective plate 3 is disposed between the panel sheet metal 2 and the printed circuit board 4. The light-transmitting protective plate 3 is made of polycarbonate and has good light transmittance. All function buttons of the remote control box housing 5 are integrated into the one-piece membrane switch 1. A pressure-sensitive adhesive layer (such as 3M adhesive) is pre-applied to the back of the membrane switch 1 for firmly adhering it to the surface of the panel sheet metal 2. The membrane switch 1 has a specific light-transmitting area, which corresponds to the digital tube display position on the printed circuit board 4.

[0026] This invention employs an independent potentiometer design. A potentiometer 7 is mounted on the panel sheet metal 2, with a knob 6 installed after the potentiometer 7 passes through the membrane switch 1. The potentiometer 7 is separated from the printed circuit board 4 and independently mounted on the lower side of the remote control housing 5. The knob 6 connects to the adjustment shaft of the independent potentiometer 7 through an opening on the remote control housing 5. The significant advantage of this design is that when the potentiometer 7 fails due to wear or other reasons, only the potentiometer 7 component needs to be replaced to restore function, eliminating the need to replace the entire expensive printed circuit board 4, significantly reducing maintenance costs and downtime.

[0027] like Figure 2 and Figure 3 As shown, a display hole 21 is provided on the sheet metal panel 2 corresponding to the light-transmitting position of the membrane switch 1, and a card swiping hole 22 is provided on the sheet metal panel 2 corresponding to the card swiping position of the membrane switch 1. The front of the light-transmitting protective plate 3 is provided with an integrally connected first protrusion 31 and second protrusion 32, which are respectively inserted into the display hole 21 and the card swiping hole 22. The first protrusion 31 and the second protrusion 32 have specific heights and dimensions. Their core function is that when high-temperature welding spatter penetrates the light-transmitting area (window) of the membrane switch or the card swiping position, the protruding structure can effectively prevent the spatter from continuing to invade the remote control box, forming a second physical barrier, thereby protecting the critical areas of the printed circuit board 4 below (especially the digital tube and peripheral circuits) from direct impact, melting, or short-circuit damage.

[0028] In addition, the upper and lower parts of the panel sheet metal 2 are respectively provided with wire through holes 23 and potentiometer mounting holes 25. The wire through holes 23 are used for the connection wires of the membrane switch 1 to pass through, and the potentiometer mounting holes 25 are used for mounting the potentiometer 7.

[0029] The back of the panel sheet metal 2 is provided with solder resist studs 24, and the light-transmitting protective plate 3 is provided with positioning holes 33. The back of the light-transmitting protective plate 3 is provided with limit posts 34 corresponding to the positioning holes 33. The solder resist studs 24 pass through the positioning holes 33 and the limit posts 34, and then pass through the printed circuit board 4 and are locked. The front of the printed circuit board 4 contacts the limit posts 34.

[0030] The installation method of this utility model is as follows:

[0031] 1. Pass the membrane switch's connecting wire through the wire hole to the back of the panel, then attach the membrane switch firmly to the panel sheet metal. Make sure the main adhesive holes are aligned, and align and concentricate the digital display window and the potentiometer mounting holes at the bottom.

[0032] 2. Install the inner light-transmitting protective plate onto the panel sheet metal using solder mask studs. At this time, align the holes of the printed circuit board with the solder mask studs, place it on the light-transmitting protective plate, and tighten it.

[0033] 3. Install the potentiometer onto the sheet metal panel and secure it, and then install the knob.

[0034] 4. Connect the panel sheet metal to the remote control box housing with bolts to complete the assembly of the remote control box housing.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A splash-proof membrane switch remote control box characterized by: The device includes a remote control box housing (5), inside which a printed circuit board (4) is installed. A panel sheet metal (2) is installed at the opening on the front of the remote control box housing (5). A membrane switch (1) is installed on the front of the panel sheet metal (2). A light-transmitting protective plate (3) is provided between the panel sheet metal (2) and the printed circuit board (4). A potentiometer (7) is installed on the panel sheet metal (2). A knob (6) is installed after the front end of the potentiometer (7) passes through the membrane switch (1).

2. The splash-resistant membrane switch remote control box of claim 1, wherein: The remote control box housing (5) is provided with a recessed mounting structure, which is used to fix and support the panel sheet metal (2).

3. The splash-resistant membrane switch remote control box of claim 1, wherein: The panel sheet metal (2) has a display hole (21) corresponding to the light-transmitting position of the membrane switch (1), and the panel sheet metal (2) has a card swiping hole (22) corresponding to the card swiping position of the membrane switch (1). The front of the light-transmitting protective plate (3) is provided with an integrally connected first protrusion (31) and second protrusion (32). The first protrusion (31) and the second protrusion (32) are respectively inserted into the display hole (21) and the card swiping hole (22).

4. The splash-resistant membrane switch remote control box of claim 1, wherein: The upper and lower parts of the panel sheet metal (2) are respectively provided with wire through holes (23) and potentiometer mounting holes (25). The wire through holes (23) are used for the connection wires of the membrane switch (1) to pass through, and the potentiometer mounting holes (25) are used for mounting the potentiometer (7).

5. The splash-resistant membrane switch remote control box of claim 1, wherein: The back of the panel sheet metal (2) is provided with solder resist studs (24), and the light-transmitting protective plate (3) is provided with positioning holes (33). The back of the light-transmitting protective plate (3) is provided with limit posts (34) corresponding to the positioning holes (33). The solder resist studs (24) pass through the positioning holes (33) and the limit posts (34) and then pass through the printed circuit board (4) and are locked. The front of the printed circuit board (4) contacts the limit posts (34).

6. The splash-resistant membrane switch remote control box of claim 1, wherein: The membrane switch (1) has a pressure-sensitive adhesive layer pre-placed on its back, and the membrane switch (1) is attached to the surface of the panel sheet metal (2) through the pressure-sensitive adhesive layer.

7. The splash-proof membrane switch remote control box according to claim 1, characterized in that: The material of the light-transmitting protective plate (3) is polycarbonate.

8. The splash-resistant membrane switch remote control box of claim 1, wherein: The panel sheet metal (2) and the remote control box housing (5) are connected by bolts.

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