SMT type plugging-resistant grounding terminal
By using tungsten carbide and chromium carbide coatings and a snap-fit design on the SMT-type grounding terminals, the problem of slippage caused by wear is solved, achieving wear resistance and stable insertion and removal, and extending service life.
Patent Information
- Application Number
- CN202422956314.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-02
AI Technical Summary
The male and female plugs of existing SMT grounding terminals wear down when they are plugged in, causing them to loosen and slip easily, which affects their use.
The use of tungsten carbide and chromium carbide coatings improves wear resistance, and the design of snap-fit grooves and anti-slip components ensures insertion and removal stability.
It increases the number of insertion and removal cycles, prevents slippage, extends service life, and enhances performance.
Smart Images
Figure CN223502222U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of grounding terminal technology, specifically an SMT type grounding terminal that is resistant to insertion and removal. Background Technology
[0002] SMT grounding terminals, also known as surface mount technology grounding terminals, are grounding connection components designed and manufactured based on SMT technology. They are mainly used for grounding connections of electronic equipment to ensure that current can be safely introduced to the ground when needed, thereby protecting equipment and personnel safety. They are soldered onto the PCB surface using SMT technology to achieve grounding connection. They feature miniaturization, high density, efficient soldering, and good electrical performance, and are widely used in various electronic devices.
[0003] However, the male and female plugs of the existing SMT grounding terminals will wear down when they are plugged in. After the wear, the two will become loose, which will make it easy for the male and female plugs to slip off, affecting their use. Utility Model Content
[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an SMT type grounding terminal that is resistant to plugging and unplugging. It effectively solves the problem that wear occurs when the male and female plugs of the existing SMT type grounding terminal are plugged in, which leads to loosening between the two and makes it easy for the male and female plugs to slip off, affecting its use.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an SMT-type mating and unmolding resistant grounding terminal, comprising a female plug-in, wherein a male plug-in is electrically connected internally to the female plug-in, the inner wall of the female plug-in is provided with a wear-resistant tungsten carbide coating, and the surface of the male plug-in is provided with a wear-resistant chromium carbide coating. The tungsten carbide coating and the chromium carbide coating improve the mating and unmolding resistance between the female plug-in and the male plug-in through their own wear resistance. A connecting plate is fixedly installed at one end of the male plug-in, and connecting blocks are fixedly installed on both the upper and lower sides of the connecting plate. Insert rods are fixedly installed at the ends of the two connecting blocks that are far apart from each other. Slots are provided on both the upper and lower sides of one end of the female plug-in, and two insert rods are inserted into the interior of the two slots. A snap-fit groove is provided on the inner wall of the side of the two slots that are far apart from each other, and an installation groove is provided at the end of the two insert rods that are far apart from each other. A limit groove is provided on the inner wall of the side of the two snap-fit grooves that are far apart from each other, and a moving groove is provided on the inner wall of the side of the two limit grooves that are far apart from each other. An anti-slip component is provided between the interiors of the two installation grooves.
[0006] Preferably, each of the movable slots has a movable rod inserted inside. A pressing plate is fixedly installed at the ends of the two movable rods that are far apart from each other. An extrusion plate is fixedly installed at the ends of the surfaces of the two movable rods. A first spring is provided on the surface of each of the two movable rods. The two ends of the two first springs are fixedly connected to the extrusion plate and the female plug-in, respectively. The ends of the two movable rods that are close to each other extend into the interior of the two limiting slots and are fixedly installed with a pushing head.
[0007] Preferably, the anti-slip assembly includes two movable plates, which are respectively disposed inside two mounting slots. Positioning sleeves are fixedly installed on both sides of the surface of each movable plate. Positioning rods are inserted into the interior of each positioning sleeve. One end of each positioning rod is fixedly connected to the inner wall of one end of each mounting slot. A second spring is provided on the surface of each positioning rod. Both ends of the second spring are fixedly connected to the movable plate and the inner wall of one end of each mounting slot. A fixing head is fixedly installed on the other end of each positioning rod. One side of each fixing head is fixedly connected to the inner wall of the mounting slot. A locking rod is fixedly installed at the center of the two movable plates on opposite sides.
[0008] Preferably, a fixing rod is fixedly installed on both sides of the two movable plates, and a slider is fixedly installed on one end of each fixing rod. Slide grooves are opened on the inner walls of both sides of the two mounting grooves, and the sliders are respectively installed inside the slide grooves.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: During insertion and removal, the female and male plugs can improve their wear resistance through tungsten carbide and chromium carbide coatings, thereby increasing their service life; During insertion, the operator inserts the male plug into the female plug and drives the two plug rods into the two slots through the connecting plate and two connecting blocks. Since the inner walls of the two slots are inclined, when the two plug rods penetrate into the two slots, the two locking rods will move into the two mounting grooves. When the two locking rods move to the two locking grooves, under the elastic force of the second spring, they will push the positioning slide sleeve along the surface of the positioning slide rod and push the moving plate out of the mounting groove. When the moving plate moves, it drives the slider to slide along the inside of the slide groove through the fixing rod, which increases the stability of the moving plate when it moves. When the two moving plates move out of the mounting groove, they drive the locking rods to lock into the inside of the two locking grooves for limiting, thereby preventing the male plug from slipping out of the female plug.
[0010] When pulling out, the operator simultaneously pushes the two pressing plates, which in turn move the moving rods along their interiors. Both moving rods then compress the first spring via the pressing plates. As the moving rods move, they drive the pushing heads to push the two locking rods out of their locking slots, releasing the limiting position. The operator can then quickly pull the male connector out of the female connector. This design ensures that the male and female connectors of this SMT grounding terminal have good wear resistance, and the locking design prevents slippage between them, improving their performance. Attached Figure Description
[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0012] In the attached diagram:
[0013] Figure 1 This is a schematic diagram of the SMT-type pluggable grounding terminal structure of this utility model;
[0014] Figure 2 This is a cross-sectional view of the SMT-type pluggable grounding terminal of this utility model.
[0015] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0016] In the diagram: 1. Female insert; 2. Male insert; 3. Connecting plate; 4. Connecting block; 5. Insert rod; 6. Slot; 7. Mounting slot; 8. Snap-fit slot; 9. Limiting slot; 10. Moving slot; 11. Moving rod; 12. Pressing plate; 13. Extrusion plate; 14. First spring; 15. Push head; 16. Positioning slide rod; 17. Positioning slide sleeve; 18. Moving plate; 19. Fixed head; 20. Snap-fit rod; 21. Second spring; 22. Fixed rod; 23. Slider; 24. Slide groove. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0018] Depend on Figures 1 to 3The present invention includes a female plug-in 1, which is electrically connected to a male plug-in 2. The inner wall of the female plug-in 1 is coated with a wear-resistant tungsten carbide, and the surface of the male plug-in 2 is coated with a wear-resistant chromium carbide. The tungsten carbide and chromium carbide coatings improve the insertion and extraction resistance between the female plug-in 1 and the male plug-in 2 through their wear resistance. A connecting plate 3 is fixedly installed at one end of the male plug-in 2, and connecting blocks 4 are fixedly installed on both the upper and lower sides of the connecting plate 3. Insert rods 5 are fixedly installed at the ends of the two connecting blocks 4 that are far apart from each other. Slots 6 are opened on both the upper and lower sides of one end of the female plug-in 1, and the two insert rods 5 are inserted into the two slots. Inside the slots 6, each slot 6 has a locking groove 8 on its outermost side, and each insert rod 5 has a mounting groove 7 on its outermost side. Each locking groove 8 has a limiting groove 9 on its outermost side, and each limiting groove 9 has a moving groove 10 on its outermost side. An anti-slip component is provided between the two mounting grooves 7. Each moving groove 10 has a moving rod 11 inserted into it. Each moving rod 11 has a pressing plate 12 fixedly mounted on its outermost side, and a pressing plate 13 fixedly mounted on the surface of each moving rod 11. Each moving rod 11 has a surface with... There are two first springs 14, both ends of which are fixedly connected to the extrusion plate 13 and the female plug-in 1, respectively. The ends of the two moving rods 11 that are close to each other extend into the interior of the two limiting grooves 9 and are fixedly installed with pushing heads 15. The anti-slip assembly includes two moving plates 18, which are respectively set inside the two mounting grooves 7. Positioning sleeves 17 are fixedly installed on both sides of the surface of the two moving plates 18. Positioning rods 16 are inserted into the interior of the positioning sleeves 17. One end of each positioning rod 16 is fixedly connected to the inner wall of one end of the two mounting grooves 7. Each surface is provided with a second spring 21. Both ends of the second spring 21 are fixedly connected to the inner wall of one end of the movable plate 18 and the mounting groove 7, respectively. The other end of the positioning slide rod 16 is fixedly installed with a fixing head 19. One side of the fixing head 19 is fixedly connected to the inner wall of the mounting groove 7, respectively. The middle of the two movable plates 18 on opposite sides is fixedly installed with a snap-fit rod 20. Both sides of the two movable plates 18 are fixedly installed with a fixing rod 22. One end of the fixing rod 22 is fixedly installed with a slider 23. The inner walls of both sides of the two mounting grooves 7 are provided with a sliding groove 24. The sliders 23 are installed inside the sliding grooves 24, respectively.
[0019] During insertion and removal, the tungsten carbide coating and chromium carbide coating of the female plug 1 and male plug 2 improve their wear resistance, thereby increasing their service life. During insertion, the operator inserts the male plug 2 into the female plug 1, and the connecting plate 3 and two connecting blocks 4 drive the two insert rods 5 into the two slots 6. Since the inner walls of the two slots 6 are inclined, as the two insert rods 5 penetrate deeper into the slots 6, the two locking rods 20 move into the two mounting grooves 7. When the two locking rods 20 reach the two locking grooves 8, under the elastic force of the second spring 21, they push the positioning sleeve 17 along the surface of the positioning slide rod 16 and push the moving plate 18 outward from the mounting groove 7. As the moving plate 18 moves, the fixed rod 22 drives the slider 23 to slide along the inside of the slide groove 24, increasing the movement... The stability of the moving plates 18 is ensured by the fact that when the two moving plates 18 move outward from the mounting slot 7, they both drive the locking rods 20 to engage inside the two locking slots 8 for limiting, thereby preventing the male plug-in 2 from slipping out of the female plug-in 1. When pulling out, the operator simultaneously pushes the two pressing plates 12, which both drive the moving rods 11 to move along the inside of the moving rods 11, and both push the first spring 14 through the pressing plate 13. When the two moving rods 11 move, they both drive the pushing head 15 to push the two locking rods 20 out of the inside of the two locking slots 8 to release the limiting, and then the operator can quickly pull the male plug-in 2 out of the female plug-in 1. This makes the male plug-in 2 and female plug-in 1 of this SMT grounding terminal have good wear resistance, and the locking design can prevent slippage between the male plug-in 2 and female plug-in 1, thus improving its performance.
Claims
1. An SMT-type, pluggable and removable grounding terminal, comprising a female plug-in (1), characterized in that: The female plug (1) is internally electrically connected to the male plug (2). The inner wall of the female plug (1) is provided with a wear-resistant tungsten carbide coating, and the surface of the male plug (2) is provided with a wear-resistant chromium carbide coating. The tungsten carbide coating and the chromium carbide coating improve the insertion and extraction resistance between the female plug (1) and the male plug (2) through their own wear resistance. A connecting plate (3) is fixedly installed at one end of the male plug (2). Connecting blocks (4) are fixedly installed on both the upper and lower sides of the connecting plate (3). Insert rods are fixedly installed at the ends of the two connecting blocks (4) that are far apart from each other. 5) Slots (6) are provided on both the upper and lower sides of one end of the female plug (1). Two plug rods (5) are inserted into the inside of the two slots (6). The inner walls of the two slots (6) on the side away from each other are provided with snap-fit grooves (8). The ends of the two plug rods (5) on the side away from each other are provided with mounting grooves (7). The inner walls of the two snap-fit grooves (8) on the side away from each other are provided with limiting grooves (9). The inner walls of the two limiting grooves (9) on the side away from each other are provided with moving grooves (10). An anti-slip component is provided between the interiors of the two mounting grooves (7).
2. The SMT-type pluggable grounding terminal according to claim 1, characterized in that: Movable rods (11) are inserted into the interior of each movable groove (10). Pressing plates (12) are fixedly installed at the ends of the two movable rods (11) that are far apart from each other. Extrusion plates (13) are fixedly installed at the ends of the surfaces of the two movable rods (11). First springs (14) are provided on the surfaces of the two movable rods (11). The two ends of the two first springs (14) are fixedly connected to the extrusion plates (13) and the female plug (1) respectively. The ends of the two movable rods (11) that are close to each other extend into the interior of the two limiting grooves (9) and are fixedly installed with pushing heads (15).
3. The SMT-type pluggable grounding terminal according to claim 1, characterized in that: The anti-slip assembly includes two movable plates (18), which are respectively set inside two mounting slots (7). Positioning sleeves (17) are fixedly installed on both sides of the surface of the two movable plates (18). Positioning rods (16) are inserted into the interior of the positioning sleeves (17). One end of the positioning rods (16) is fixedly connected to the inner wall of one end of the two mounting slots (7). The surface of the positioning rods (16) is provided with a second spring (21). Both ends of the second springs (21) are fixedly connected to the inner wall of one end of the movable plate (18) and the mounting slot (7). The other end of the positioning rods (16) is fixedly installed with a fixing head (19). One side of the fixing head (19) is fixedly connected to the inner wall of the mounting slot (7). A snap-fit rod (20) is fixedly installed in the middle of the two movable plates (18) on the side away from each other.
4. The SMT-type pluggable grounding terminal according to claim 3, characterized in that: Both sides of the two movable plates (18) are fixedly installed with fixing rods (22), and one end of each fixing rod (22) is fixedly installed with a slider (23). The inner walls of both sides of the two mounting slots (7) are provided with sliding grooves (24), and the sliders (23) are respectively installed inside the sliding grooves (24).