A potted solder barrier terminal

Abstract

This utility model belongs to the field of terminal block technology, specifically, it relates to a surface-mount welding fence-type terminal block; it includes an insulating shell, a fluid guide, screws, and PCB fasteners; this utility model has a simple and reliable structure, and the PCB fasteners enhance the stability of the connection, meeting the need for simple and quick operation; the solder feet are aligned with the PCB board pads, meeting the need for accurate and stable pre-assembly for subsequent welding operations; the anti-slip texture on the surface of the fluid guide and the raised ribs on the bottom of the square pads can effectively enhance the anti-detachment force. Conventional perforated welding fence terminals are usually located on top of the PCB board, occupying a large amount of height space, while this structure can provide the function of mounting on the PCB board plane, and provides two assembly directions, thereby effectively reducing the height space, and thus can be widely used in industrial application scenarios with limited height space.

Description

Technical Field

[0001] This utility model belongs to the field of terminal block technology, specifically, it relates to a patch-welded fence-type terminal block. Background Technology

[0002] In the industry, fence-type terminal blocks are usually soldered to PCB boards using a through-hole method. However, since terminal blocks and fluid conductors are usually small, and due to performance requirements, the soldering locations are relatively fixed and difficult to operate. They are usually soldered in corners or point-to-point locations, which leads to a relatively cumbersome soldering process and low work efficiency.

[0003] Correspondingly, some companies in the industry use combination splicing and plug-in methods to install terminals and PCBs. However, these methods are either too complex and costly, or too simple and cannot meet the requirements for stability and connection strength. Furthermore, they need to take into account the relative independence of each component, making manual operation convenient while saving space as much as possible to meet the needs of widespread use in industrial applications with limited vertical space. Utility Model Content

[0004] In view of the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a patch-welded fence-type terminal block that can meet the wide use needs in industrial application scenarios with limited vertical space, is easy to operate manually, and has a strong connection structure stability.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A surface-mount solderable fence terminal block includes an insulating housing, a fluid conductor, screws, and a PCB fastener;

[0007] The insulating housing includes a plurality of grids that are equally spaced apart by grid plates. The bottom surface of the grid is inclined and a cavity is formed through the middle of the bottom surface of the grid. Two mounting grooves are also formed through the bottom surface of the grid. The two mounting grooves are located on the upper and lower sides of the cavity and correspond to the two welding feet of the fluid guide.

[0008] The guide fluid is mounted on the cavity via a weld foot that fits in the mounting groove, and the screw is mounted in the middle of the guide fluid via a threaded connection.

[0009] The PCB fasteners are located on the left and right sides of the bottom surface of the insulating housing;

[0010] Two rows of fixing plates are provided on the bottom surface of the insulating shell along the length of the insulating shell, and these two rows of fixing plates are parallel to the welding feet on the upper and lower sides.

[0011] A central plate is also provided on the bottom surface of the insulating housing. The central plate is located in the middle of the two rows of fixing plates and the distance between the central plate and the two rows of fixing plates is sufficient to engage the PCB board.

[0012] Furthermore, the two mounting grooves extend upward and downward at the bottom respectively to form limiting portions, and limiting blocks matching the limiting portions are respectively provided on the outer sides of the two welding feet of the fluid guide.

[0013] Furthermore, the top surface of the fluid guide is provided with anti-slip texture.

[0014] Furthermore, two PCB fasteners are respectively provided on both sides of the insulating housing.

[0015] Furthermore, the PCB fasteners are installed on both sides of the insulating housing via a plug-in mechanism.

[0016] Furthermore, the PCB fastener is provided with an inwardly elastic movable strip, which matches the opening on the side of the PCB board.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model features a simple and reliable structure. A PCB fastener with a foolproof bottom design enhances the stability and secure connection of the mounted PCB board, while also meeting the requirements for simple and quick operation. The solder feet align with the PCB board pads, providing accurate and stable pre-assembly for subsequent soldering operations. When external wires or pre-fabricated wires with cold-pressed terminals are connected, the ergonomically designed mounting surface facilitates easier operation. The anti-slip texture on the fluid-conducting surface and the raised ribs on the bottom of the square gasket effectively enhance anti-detachment force. The inward-facing structure at the four corners of the square gasket effectively gathers the wires, preventing them from being squeezed out when the screws are tightened, resulting in a more stable overall connection. Conventional through-hole soldering terminals are typically located on top of the PCB board, occupying significant height space. This structure, however, provides flat mounting capability with the PCB board and offers two assembly directions, effectively reducing height space requirements and making it widely applicable in industrial applications with limited height. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention after the PCB board is installed;

[0020] Figure 2 This is a schematic diagram of the insulating shell structure;

[0021] Figure 3 This is a structural diagram of the fluid guide, screws, and PCB fasteners.

[0022] Figure 4 This is a schematic diagram of the fluid guide and screws in a half-section structure.

[0023] Figure 5 This is a schematic diagram of the fluid-conducting structure;

[0024] Figure 6 This is a bottom view of the insulating casing;

[0025] Figure 7 for Figure 6 Cross-sectional view of BB in the middle;

[0026] Figure 8 This is a schematic diagram of the PCB board structure;

[0027] In the diagram: 1-Insulating shell; 11-Grid; 12-Grid plate; 13-Cavity; 14-Mounting groove; 15-Limiting part; 16-Fixing plate; 17-Center plate; 2-Flow guide; 21-Welding foot; 22-Limiting block; 23-Anti-slip texture; 3-Screw; 4-PCB fastener; 41-Moving strip; 5-PCB board; 51-Opening. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments.

[0029] like Figure 1-8 As shown, the patch-welded fence-type terminal block of this utility model includes an insulating housing 1, a fluid conductor 2, a screw 3, and a PCB fastener 4.

[0030] Specifically, the insulating housing 1 includes a plurality of grids 11 evenly spaced by grid plates 12. In this embodiment, there are six grids 11, and grid plates 12 are also provided on both sides of the grids 11 on the left and right sides. The bottom surface of each grid 11 is inclined, and a cavity 13 is formed through the middle of the bottom surface of the grid 11. Two corresponding mounting grooves 14 are also formed through the bottom surface of the grid 11. These two mounting grooves 14 are located on the upper and lower sides of the cavity 13, respectively, and are to correspond to the two welding feet 21 of the fluid guide 2, so that the two welding feet 21 of the fluid guide 2 can be just locked into the mounting grooves 14, and finally the fluid guide 2 can be installed on the cavity 13.

[0031] Regarding the engagement mechanism, it can be seen that the two mounting grooves 14 extend upward and downward at the bottom respectively to form limiting portions 15. Correspondingly, limiting blocks 22 matching the limiting portions 15 are provided on the outer sides of the two welding feet 21 of the fluid guide 2. Thus, when the worker inserts the welding feet 21 into the mounting groove 14, the welding feet 21 retract inward under the action of the limiting blocks 22. Then, the limiting blocks 22 lock into the limiting portions 15, and the welding feet 21 lock into the mounting groove 14. This can prevent the fluid guide 2 from coming out of the insulating shell 1 after being subjected to external force.

[0032] Screw 3 is installed in the middle of the guide tube 2 via a threaded connection, thus forming a threaded pair between the guide tube 2 and screw 3. Anti-slip texture 23 is also provided on the top surface of the guide tube 2 to increase the anti-derailment force of the wire.

[0033] In this embodiment, there are four PCB fasteners 4, arranged in pairs on both sides of the bottom surface of the insulating housing 1. Specifically, in this embodiment, the PCB fasteners are installed inside the insulating housing 1 by means of externally provided barbs, which can prevent them from easily coming off after assembly. The PCB fasteners are also provided with inwardly elastic movable strips 41, and the PCB board 5 is also provided with corresponding openings 51. When installing the PCB board 5, it is only necessary to push the PCB board 5 straight in. The movable strips 41 will be pushed open first, and after being pushed into place, the movable strips 41 will be locked in the openings 51, thus completing the locking.

[0034] In this embodiment, the head of the screw 4 is round, and the groove shape of the head can be set as a slotted groove, a cross groove, or a single cross groove, etc. The specific structure can be adjusted according to actual needs. A square washer is provided below the head of the screw 4. The four corners of the washer are bent, and grooves and convex structures are formed along the four sides from the center hole. The groove is on one side under the head of the screw 4, and the convex structure is on one side of the surface of the fluid guide 2.

[0035] Two rows of fixing plates 16 are arranged along the length of the bottom surface of the insulating housing 1. These two rows of fixing plates 16 are parallel to the solder feet 21 on the upper and lower sides, respectively. In addition, a center plate 17 is also provided on the bottom surface of the insulating housing 1. The center plate 17 is located between the two rows of fixing plates 16, and the distance between the center plate 17 and the two rows of fixing plates 16 is just enough to fit the PCB board 5.

[0036] This utility model features a simple and reliable structure. A PCB fastener with a foolproof bottom design enhances the stability and secure connection of the mounted PCB board, while also meeting the requirements for simple and quick operation. The solder feet align with the PCB board pads, providing accurate and stable pre-assembly for subsequent soldering operations. When external wires or pre-fabricated wires with cold-pressed terminals are connected, the ergonomically designed mounting surface facilitates easier operation. The anti-slip texture on the fluid-conducting surface and the raised ribs on the bottom of the square gasket effectively enhance anti-detachment force. The inward-facing structure at the four corners of the square gasket effectively gathers the wires, preventing them from being squeezed out when the screws are tightened, resulting in a more stable overall connection. Conventional through-hole soldering terminals are typically located on top of the PCB board, occupying significant height space. This structure, however, provides flat mounting capability with the PCB board and offers two assembly directions, effectively reducing height space requirements and making it widely applicable in industrial applications with limited height.

Claims

1. A surface-mount solderable fence-type terminal block, characterized in that, Includes insulating housing, fluid guide, screws, and PCB fasteners; The insulating housing includes a plurality of grids that are equally spaced apart by grid plates. The bottom surface of the grid is inclined and a cavity is formed through the middle of the bottom surface of the grid. Two mounting grooves are also formed through the bottom surface of the grid. The two mounting grooves are located on the upper and lower sides of the cavity and correspond to the two welding feet of the fluid guide. The guide fluid is mounted on the cavity via a weld foot that fits in the mounting groove, and the screw is mounted in the middle of the guide fluid via a threaded connection. The PCB fasteners are located on the left and right sides of the bottom surface of the insulating housing; Two rows of fixing plates are provided on the bottom surface of the insulating shell along the length of the insulating shell, and these two rows of fixing plates are parallel to the welding feet on the upper and lower sides. A central plate is also provided on the bottom surface of the insulating housing. The central plate is located in the middle of the two rows of fixing plates and the distance between the central plate and the two rows of fixing plates is sufficient to engage the PCB board.

2. The patch-welded fence-type terminal block according to claim 1, characterized in that, The two mounting grooves extend upward and downward from the bottom to form limiting portions, and limiting blocks matching the limiting portions are respectively provided on the outer sides of the two welding feet of the fluid guide.

3. The patch-welded fence-type terminal block according to claim 1, characterized in that, The top surface of the fluid guide is provided with anti-slip texture.

4. The patch-welded fence-type terminal block according to claim 1, characterized in that, Two PCB fasteners are respectively provided on both sides of the insulating shell.

5. The patch-welded fence-type terminal block according to any one of claims 1 or 4, characterized in that, The PCB fasteners are installed on both sides of the insulating housing via a plug-in mechanism.

6. The patch-welded fence terminal block according to any one of claims 1 or 4, characterized in that, The PCB fastener has an inwardly elastic movable strip that matches the opening on the side of the PCB board.

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