Rail head and PCBA welding-free connection structure

Abstract

The utility model relates to the technical field of track systems, in particular to a track head and PCBA welding-free connection structure which comprises a conductive module and a control module, the conductive module comprises a conductive switching assembly and a metal terminal, the conductive switching assembly is used for being electrically connected with an external power supply structure, and the metal terminal is used for being electrically connected with the external power supply structure. The metal terminal is used for being electrically connected with the conductive switching assembly, the control module comprises a circuit board, the circuit board is provided with a conductive piece, the conductive piece is used for being in contact with the metal terminal, the metal terminal is in stable contact with the circuit board, the assembly is simpler, the maintenance is convenient, and the cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of rail systems, in particular to a solder-free connection structure between a rail head and a PCBA. Background Art

[0002] Track lights are popular in lighting systems, particularly for commercial and high-end residential lighting, for their flexibility and aesthetic appeal. Track lighting systems typically consist of a track rail and multiple luminaires that move along the track. To power these luminaires and control their functions, a control circuit board is often installed at the track joint. Conventional technology typically relies on soldering to connect the control circuit board to the track rail's power supply structure.

[0003] Although welding technology has demonstrated reliable electrical connection capabilities in many industrial applications, this method has certain limitations in the track joint structure of track lights. First, the welding process requires precise operation and appropriate welding equipment, which leads to a decrease in assembly efficiency. In a large-scale production environment, the welding process becomes a manufacturing bottleneck, affecting the overall production speed. Secondly, quality problems such as cold solder joints and false solder joints are prone to occur during the welding process. These problems may lead to unstable electrical connections and affect the functionality and safety of the lamps. Finally, once a failure occurs, the control circuit board connected by welding is not easy to replace, which increases the difficulty and cost of maintenance. Therefore, when welding technology is applied to the track joint structure of track lights, its efficiency and convenience are significantly limited. Summary of the Invention

[0004] The utility model aims to solve the problems of the prior art and provides a solder-free connection structure between a rail head and a PCBA. The metal terminal has stable contact with the circuit board, is simpler to assemble, is convenient to maintain, and has lower cost.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a solder-free connection structure between a rail head and a PCBA, including a conductive module and a control module, the conductive module including a conductive switching component and a metal terminal, the conductive switching component is used to be electrically connected to an external power supply structure, the metal terminal is used to be electrically connected to the conductive switching component, the control module includes a circuit board, the circuit board is provided with a conductive part, and the conductive part is used to contact the metal terminal.

[0006] Preferably, the device further comprises a housing, wherein the housing is provided with a mounting cavity for assembling the control module and a conducting cavity for assembling the conducting module.

[0007] Preferably, the metal terminal includes a contact portion, a bent portion and a conductive portion, one end of the bent portion is connected to the conductive portion, the other end of the bent portion is connected to the contact portion, and the bent portion is bent from the conductive portion toward the conductive member.

[0008] Preferably, the housing is provided with a positioning groove, and the bending portion and the contact portion are both limited to the positioning groove.

[0009] Preferably, the conductive member of the circuit board is located in the positioning groove and contacts the contact portion.

[0010] Preferably, the housing is further provided with a limiting groove, and the conductive part is assembled in the limiting groove.

[0011] Preferably, the housing is provided with a limiting post, and the limiting post is used to abut against the circuit board so that the conductive part of the circuit board maintains contact with the metal terminal.

[0012] Preferably, the outer shell includes an upper shell and a lower shell, a first clamping block is provided on one side of the upper shell, a first clamping ring is provided on the other side of the upper shell, a second clamping block is provided on one side of the lower shell, a second clamping ring is provided on the other side of the lower shell, the first clamping block is used to clamp to the second clamping ring, and the second clamping block is used to clamp to the first clamping ring.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a track head and PCBA solder-free connection structure, which realizes the power supply purpose of the circuit board through the contact between the metal terminal and the conductive part of the circuit board. The structure is simple and adopts a solder-free crimping method. The crimping connection does not need to wait for the solder to cool and solidify, nor does it require complicated welding equipment and operating skills. Therefore, it can greatly speed up the assembly speed and improve production efficiency; the crimping connection relies on mechanical pressure to form a close metal-to-metal contact, which is more stable than the welding connection, so that the crimped connection point can provide continuous and stable electrical performance; the crimping connection is usually more resistant to vibration and thermal cycles than the welding connection. Therefore, during the long-term use of the track light, even in the face of frequent temperature changes and slight physical vibrations, the connection point is not easy to loosen or fail; the non-welding crimping connection method has components that can be more easily disassembled and replaced, which is a huge advantage for maintenance work, can save time and cost, and also improve the repairability of the product; and it reduces the demand for welding equipment and the dependence on skilled welders, which can reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0017] Figure 3 It is a cross-sectional view of the utility model;

[0018] Figure 4 It is a structural diagram of the conductive module and the upper shell of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the upper shell of the utility model;

[0020] Figure 6 This is a schematic structural diagram of the lower shell of the present utility model;

[0021] Figure 7 This is a schematic structural diagram of the metal terminal of the present invention.

[0022] exist Figures 1 to 7 Reference numerals in the figures include:

[0023] 1-conductive switching component, 2-metal terminal, 3-circuit board, 4-conductive part, 5-housing, 6-contact part, 7-bending part, 8-conductive part, 9-positioning groove, 10-limiting groove, 11-limiting column, 12-upper shell, 13-lower shell, 14-first clamping block, 15-first clamping ring, 16-second clamping block, 17-second clamping ring. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0025] This embodiment provides a track head and PCBA solder-free connection structure, such as Figures 1 to 7 , including a conductive module and a control module, the conductive module includes a conductive switching component 1 and a metal terminal 2, the conductive switching component 1 is used to electrically connect to an external power supply structure, the metal terminal 2 is used to electrically connect to the conductive switching component 1, the control module includes a circuit board 3, i.e., a PCBA, on which corresponding control circuits and components are provided, the circuit board 3 is provided with a conductive member 4, the conductive member 4 is used to contact the metal terminal 2, wherein the conductive member 4 can be a soldering pad, or a metal member welded on the soldering pad, which can be used for contact and power supply. The conductive switching component 1 of this embodiment is a prior art, used to adjust the power supply gear, and this embodiment does not impose any restrictions.

[0026] Specifically, the structure of the metal terminal 2 and the conductive member 4 of the circuit board 3 of this embodiment is as follows: Figure 3As shown, two corresponding conductive parts 4 for conducting electricity are provided on the side of the circuit board 3 facing the metal terminal 2. After the circuit board 3 is installed in the installation cavity of the shell 5, the metal terminal 2 contacts the conductive part 4, so that the circuit board 3 is electrically connected to the conductive module. When in use, this embodiment is installed on the track, and the conductive switching component 1 of the conductive module is connected to the track, so that the track can provide stable power supply to the circuit board 3 through the conductive module.

[0027] More specifically, if Figures 2 to 5 As shown, this embodiment is provided with a housing 5, which includes two parts: a mounting cavity for mounting the control module, and a conductive cavity for mounting the conductive module. The mounting cavity is further provided with a positioning groove 9, and the conductive cavity is provided with a limiting groove 10. Figure 7 As shown, the metal terminal 2 includes a contact portion 6, a bending portion 7 and a conductive portion, one end of the bending portion 7 is connected to the conductive portion, and the other end of the bending portion 7 is connected to the contact portion 6, and the bending portion 7 is bent from the conductive portion toward the conductive member 4. During assembly, the conductive portion of the metal terminal 2 is assembled in the limiting groove 10, and in order to maintain accurate and stable contact, the contact portion 6 of the metal terminal 2 is located in the positioning groove 9, or the contact portion 6 and the bending portion 7 of the metal terminal 2 are both located in the positioning groove 9, which can prevent problems such as unstable contact caused by displacement of the contact portion 6 and the bending portion 7; further, after the circuit board 3 is installed, the conductive member 4 can also be optionally located in the positioning groove 9 to ensure accurate contact between the conductive member 4 and the metal terminal 2. After the circuit board 3 is assembled, since the contact portion 6 and the bending portion 7 of the metal terminal 2 form a spring structure, it has a certain elasticity, such as Figure 3 In the direction shown, the upward force is formed by the bent portion 7. After the circuit board 3 is assembled, the circuit board 3 is located above the contact portion 6 and the bent portion 7. Therefore, the contact portion 6 is subjected to the crimping force of the circuit board 3, and the bent portion 7 has an upward reset force, thereby maintaining stable contact between the contact portion 6 and the conductive member 4 of the circuit board 3.

[0028] Furthermore, in order to maintain the assembly stability of the circuit board 3 and maintain stable contact between the metal terminal 2 and the conductive member 4, the size of the mounting cavity of the shell 5 of this embodiment is set to be compatible with the size of the control module, that is, after the control module is assembled into the mounting cavity, the components on the circuit board 3 can abut against the cavity wall of the mounting cavity, thereby fixing the position of the circuit board 3. Furthermore, the shell 5 is also provided with a limiting post 11, and there are two limiting posts 11. The positions of the two limiting posts 11 correspond to the positions of the conductive member 4, that is, after the circuit board 3 is assembled into the mounting cavity, the conductive member 4 located on the lower surface of the circuit board 3 contacts the metal terminal 2, and the limiting post 11 abuts against the upper surface of the circuit board 3. Figure 3 As shown, the circuit board 3 is ensured not to shake easily, and the conductive member 4 can maintain contact with the metal terminal 2.

[0029] like Figure 5 、 Figure 6 As shown, the housing 5 of this embodiment includes an upper shell 12 and a lower shell 13. A first clamping block 14 is provided on one side of the upper shell 12, and a first clamping ring 15 is provided on the other side of the upper shell 12. A second clamping block 16 is provided on one side of the lower shell 13, and a second clamping ring 17 is provided on the other side of the lower shell 13. The first clamping block 14 is used to be clamped to the second clamping ring 17, and the second clamping block 16 is used to be clamped to the first clamping ring 15. Specifically, the upper shell 12 and the lower shell 13 are assembled together by clamping the first clamping block 14 of the upper shell 12 into the second clamping ring 17 of the lower shell 13, and the second clamping block 16 of the lower shell 13 into the first clamping ring 15 of the upper shell 12. The assembly method is simple.

[0030] In this embodiment, a stable power supply to the circuit board 3 is ensured by crimping. When applied to a track system, in the track joint connection structure of a track light, the metal terminal 2 is in contact with the circuit board 3, providing an efficient, reliable, durable, easy-to-maintain, economical and environmentally friendly electrical connection method with higher practicality:

[0031] 1. The crimp connection does not require waiting for the solder to cool and solidify, nor does it require complicated welding equipment and operating skills, so it can greatly speed up the assembly speed and improve production efficiency.

[0032] 2. Pressed connections rely on mechanical pressure to form close metal-to-metal contact, which is generally more stable than soldered connections, as soldering may be affected by cold soldering, false soldering, or solder cracks. Pressed connection points can provide continuous and stable electrical performance.

[0033] 3. Pressed connections are generally more resistant to vibration and thermal cycling than welded connections, which means that during the long-term use of the track light, even in the face of frequent temperature changes and slight physical vibrations, the connection points are less likely to loosen or fail.

[0034] 4. Non-welded press-fit connections mean that parts can be disassembled and replaced more easily, which is a huge advantage for repair work, saving time and costs, while also improving the repairability of the product.

[0035] 5. Reduced demand for welding equipment and reliance on skilled welders can reduce production costs. In addition, since crimped connections improve product durability and reduce maintenance requirements, they also reduce product life cycle costs.

[0036] 6. The crimp connection avoids the use of solder, which not only reduces the emission of harmful substances, but also simplifies the material separation steps during product recycling.

[0037] 7. Crimp connections reduce the risk of electrical failures caused by poor soldering and improve the overall safety of the product, especially in commercial or industrial lighting environments that require continuous and reliable operation.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A solderless connection structure between a rail head and a PCBA, characterized by: It includes a conductive module and a control module. The conductive module includes a conductive switching component and a metal terminal. The conductive switching component is used to be electrically connected to an external power supply structure. The metal terminal is used to be electrically connected to the conductive switching component. The control module includes a circuit board. The circuit board is provided with a conductive part, and the conductive part is used to contact the metal terminal.

2. The rail head and PCBA solderless connection structure according to claim 1, characterized in that: The device further comprises a housing, wherein the housing is provided with a mounting cavity for assembling the control module and a conducting cavity for assembling the conducting module.

3. The rail head and PCBA solderless connection structure according to claim 2, characterized in that: The metal terminal includes a contact portion, a bent portion and a conductive portion, one end of the bent portion is connected to the conductive portion, the other end of the bent portion is connected to the contact portion, and the bent portion is bent from the conductive portion toward the conductive member.

4. The rail head and PCBA solderless connection structure according to claim 3, characterized in that: The housing is provided with a positioning groove, and the bending portion and the contact portion are both limited to the positioning groove.

5. The rail head and PCBA solderless connection structure according to claim 4, characterized in that: The conductive member of the circuit board is located in the positioning groove and contacts the contact portion.

6. The rail head and PCBA solderless connection structure according to claim 3, characterized in that: The housing is further provided with a limiting groove, and the conductive part is assembled in the limiting groove.

7. The rail head and PCBA solderless connection structure according to claim 2, characterized in that: The housing is provided with a limiting column, which is used to abut against the circuit board so that the conductive part of the circuit board maintains contact with the metal terminal.

8. The rail head and PCBA solderless connection structure according to claim 2, characterized in that: The shell includes an upper shell and a lower shell, a first clamping block is provided on one side of the upper shell, and a first clamping ring is provided on the other side of the upper shell, a second clamping block is provided on one side of the lower shell, and a second clamping ring is provided on the other side of the lower shell, the first clamping block is used to clamp to the second clamping ring, and the second clamping block is used to clamp to the first clamping ring.

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