Welding tool for B10K potentiometer

Abstract

According to the welding tool for the B10K potentiometer, the B10K potentiometer is positioned through a threaded hole in the center of a positioning plate, an arc-shaped groove in the periphery of the positioning plate is matched with a supporting base plate groove of a supporting base plate in a supporting piece, and a supporting column set in the supporting piece is supported on a printed board. And finally, the screw rod of the cross-recessed three-combination screw penetrates through the arc-shaped groove of the positioning plate to the groove of the supporting base plate, so that the positioning plate is connected with the supporting piece, the B10K potentiometer is finally positioned, and the damage to the pin of the B10K potentiometer is avoided.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically to a welding fixture for B10K potentiometers. Background Technology

[0002] There are generally two installation methods for B10K potentiometers. One is to fix the B10K potentiometer to the panel using its own threads, which is called panel thread installation. The other is to directly solder the B10K potentiometer to the printed circuit board, which is called printed circuit board soldering installation. Each method has its advantages and disadvantages. How to ensure the correctness and consistency of the installation while also making it convenient for operators has always been a factor that has troubled some designers.

[0003] If the first installation method is used, the position of the printed circuit board behind it must be precisely controlled, or the B10K potentiometer needs to be connected to the printed circuit board by soldering wires, which increases the time required. Therefore, the second method is usually preferred, which directly solders the B10K potentiometer to the printed circuit board. This eliminates the need for additional soldering wires, and the position of the printed circuit board also has an adjustable range.

[0004] However, the second method requires certain skills from the soldering personnel. Since the contact area between the B10K potentiometer and the printed circuit board is not flat, there will be varying degrees of tilting during soldering, which will affect the appearance of the product and, in severe cases, affect the pins of the B10K potentiometer, thus affecting its use. Utility Model Content

[0005] The purpose of this invention is to solve the problem of varying degrees of tilting during the soldering of B10K potentiometers, which ultimately affects the pins of the B10K potentiometer.

[0006] This utility model provides a soldering fixture for B10K potentiometers, used to assist in soldering B10K potentiometers on a printed circuit board. The B10K potentiometer includes a cylindrical body, a threaded portion connected to the cylindrical body, and a soldering portion connected to the threaded portion. The soldering portion has pins for connecting to the printed circuit board. The soldering fixture includes:

[0007] The positioning plate has a threaded hole in the center for positioning the cylindrical body, and arc-shaped grooves with rounded ends around its perimeter.

[0008] The support includes a support pad and a support column assembly on the support pad. The support pad has a support pad groove that matches the arc-shaped groove. The screw of the cross-slot three-way combination screw passes through the arc-shaped groove of the positioning plate to the support pad groove to realize the connection between the positioning plate and the support. The support column assembly is supported on the printed circuit board.

[0009] Preferably, the difference between the inner diameter of the threaded hole and the diameter of the cylindrical body is in the range of 0.8-1.2 mm.

[0010] Preferably, the arcuate curvature of the two ends of the arcuate groove matches the curvature of the screw of the cross-groove three-combination screw.

[0011] Preferably, the threaded hole matches the thread of the threaded portion.

[0012] Preferably, the support column assembly is a telescopic structure to adjust the support height of the welding fixture.

[0013] Preferably, the length of the support pad is greater than or equal to the length of the positioning plate, so as to ensure that the support pad can fit into each arc-shaped groove of the positioning plate.

[0014] This invention proposes a welding fixture for a B10K potentiometer. The B10K potentiometer is positioned by a threaded hole in the center of a positioning plate. The arc-shaped grooves around the positioning plate and the support pad grooves in the support component cooperate with each other. The support column assembly in the support component supports the printed circuit board. Finally, the screw of the cross-slot three-way combination screw passes through the arc-shaped groove of the positioning plate to the support pad groove, thereby connecting the positioning plate and the support component to achieve the final positioning of the B10K potentiometer and avoid damage to the pins of the B10K potentiometer. Attached Figure Description

[0015] Figure 1 A welding fixture for a B10K potentiometer is provided for an embodiment of this utility model. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0017] This utility model provides a soldering fixture for B10K potentiometers, used to assist in soldering B10K potentiometer 1 on a printed circuit board. The B10K potentiometer 1 includes a cylindrical body 11, a threaded portion 12 connected to the cylindrical body 11, and a soldering portion 13 connected to the threaded portion 12. The soldering portion 13 is provided with pins 131 for connection to the printed circuit board 5. The soldering fixture includes:

[0018] The positioning plate 2 has a threaded hole 21 at its center for positioning the cylindrical body 11, and arc-shaped grooves 22 with rounded ends around its perimeter. The difference between the inner diameter of the threaded hole 21 and the diameter of the cylindrical body 11 is 0.8-1.2 mm. The threaded part 12 cooperates with the threaded hole 21 to position the cylindrical body 11, so that the pins 131 of the welding part 13 are welded to the printed circuit board 5, and to ensure that the cylindrical body 11 will not tilt due to the excessive diameter of the threaded hole 21, thereby preventing damage to the pins 131 of the welding part 13. The arc curvature at both ends of the arc-shaped groove 22 matches the screw curvature of the cross-slot three-way combination screw 4.

[0019] The support member 3 includes a support pad 31 and a support column assembly 32 disposed on the support pad 31. The support pad 31 has a support pad groove that matches the arc-shaped groove 22. The screw of the cross-slot three-way combination screw 4 passes through the arc-shaped groove 22 of the positioning plate 2 to the support pad groove to realize the connection between the positioning plate 2 and the support member 3. The support column assembly 32 is supported on the printed circuit board 5. The support column assembly 32 can be a telescopic structure to adjust the support height of the welding fixture. The length of the support pad 31 is greater than or equal to the length of the positioning plate 2 to ensure that the support pad 31 can fit into each arc-shaped groove 22 of the positioning plate 2.

[0020] This utility model also provides a method for soldering a B10K potentiometer to a printed circuit board, using a soldering fixture for B10K potentiometers as described above. The method for soldering a B10K potentiometer to a printed circuit board includes the following steps:

[0021] The cylindrical body 11 of the B10K potentiometer 1 is passed through the threaded hole 21 of the positioning plate 2 and installed with the threaded part 12 and the threaded hole 21, so that the welding part 13 is located on the side with the support column group 32, thus obtaining the initial assembly.

[0022] The initial position is obtained by aligning the pins of the initial component with the soldering holes of the printed circuit board 5. The initial position is then finely adjusted to avoid the components on the printed circuit board to obtain the final position. At the final position, the positioning plate 2 and the support 3 are connected by the cross-slot three-combination screw 4, so that the soldering fixture is supported on the printed circuit board 5 by the support column group 32 and accurately positioned, thereby realizing the soldering of the B10K potentiometer 1 to the printed circuit board.

[0023] This invention secures a B10K potentiometer to a welding fixture via its own threads. The support post assembly 32 of the welding fixture is then pressed against the printed circuit board (PCB), and the leads of the B10K potentiometer are welded. The support post assembly 32 of the welding fixture is machined to ensure flatness, thus ensuring the potentiometer is positive when pressed against the PCB. Furthermore, all B10K potentiometers can be welded using the welding fixture, ensuring consistency.

Claims

1. A welding fixture for a B10K potentiometer, characterized by, A tool for assisting in soldering B10K potentiometers on a printed circuit board. The B10K potentiometer includes a cylindrical body, a threaded portion connected to the cylindrical body, and a soldering portion connected to the threaded portion. The soldering portion has pins for connecting to the printed circuit board. The soldering fixture includes: The positioning plate has a threaded hole in the center for positioning the threaded part, and arc-shaped grooves with rounded ends around its perimeter. The support includes a support pad and a support column assembly on the support pad. The support pad has a support pad groove that matches the arc-shaped groove. The screw of the cross-slot three-way combination screw passes through the arc-shaped groove of the positioning plate to the support pad groove to realize the connection between the positioning plate and the support. The support column assembly is supported on the printed circuit board.

2. A welding fixture for a B10K potentiometer as claimed in claim 1, characterized in that The difference between the inner diameter of the threaded hole and the diameter of the cylindrical body is in the range of 0.8-1.2 mm.

3. A welding fixture for a B10K potentiometer as defined in claim 1, wherein The arc radius at both ends of the arc-shaped groove matches the arc radius of the screw rod of the cross-groove three-combination screw.

4. The welding fixture for a B10K potentiometer of claim 1, wherein, The support column assembly is a telescopic structure to adjust the support height of the welding fixture.

5. A welding fixture for a B10K potentiometer as defined in claim 1, wherein The length of the support pad is greater than or equal to the length of the positioning plate to ensure that the support pad can fit into each arc-shaped groove of the positioning plate.

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