Quick solderless connector for connecting a wire and a PCB board

Abstract

The application relates to a quick welding-free connector for connecting a wire and a PCB board, which is characterized in that two pressure pieces at one end of a connecting terminal are matched with slots on a top cover, the wire is clamped in a clamping slot between the two pressure pieces, the wire is reliably connected with the connecting terminal, the welding-free quick connection of the connecting terminal and the wire is realized, meanwhile, two clamping pieces at the other end of the connecting terminal are inserted into a via hole on the PCB board, the clamping pieces are tightly matched with the via hole under the elastic action of the clamping pieces, the welding-free quick connection of the connecting terminal and the PCB board is realized, and the technical problems of the traditional wire and the PCB board connection needing welding, the great connection difficulty and the low efficiency are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of point connectors, and particularly relates to a quick solderless connector for connecting wires and a PCB board. Background Art

[0002] The connection methods between a PCB board and wires mainly include direct soldering and using quick plug connectors. The quick plug connectors are divided into male plugs and female plugs. Generally, one of the male and female plugs is pre-soldered on the PCB board, and the other is soldered to the wire. When it is necessary to connect the wire to the PCB board, the male and female plugs can be docked. Although this connection method simplifies the connection process, in fact, the connection between the male and female plugs and the PCB board and the wire requires soldering, and the entire connection process is still complex. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a quick solderless connector for connecting wires and a PCB board, so as to solve the technical problems that the connection between traditional wires and a PCB board requires soldering, resulting in large connection difficulty and low efficiency.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a quick solderless connector for connecting wires and a PCB board, including a base, a top cover, and a plurality of connection terminals. The top of the base faces the top cover, and the bottom of the base faces the PCB board. The base is vertically provided with insertion holes corresponding to the connection terminals one by one, and each connection terminal is fixedly inserted into the corresponding connection hole. Both ends of the connection terminal extend out of the base. The top cover is provided with slots corresponding to the connection terminals one by one. When the top cover is fixedly covered on the base, one end of each connection terminal is inserted into the corresponding slot; the bottom of the base is provided with a plurality of positioning columns extending outward, and the axial direction of the positioning columns is parallel to the axial direction of the insertion holes. The positioning columns are used to connect the PCB board. Any connection terminal includes a positioning portion, two separated crimping pieces connected to one end of the positioning portion close to the top cover, and two separated clamping pieces connected to one end of the positioning portion far from the top cover; the positioning portion is clamped with the insertion hole, the two crimping pieces are symmetric with each other, and the ends of the two crimping pieces far from the positioning portion are separated from each other to form a "V"-shaped guiding groove, and the ends of the two crimping pieces close to the positioning portion are parallel to each other to form a "|" -shaped clamping groove. The guiding groove and the clamping groove are connected up and down, and the two crimping pieces can be inserted into the same slot; the two clamping pieces are symmetrically arranged, and the middle parts of the two clamping pieces are respectively contracted inward on the opposite sides to form side grooves. The opposite sides of the two clamping pieces are arc surfaces arched outward from the side grooves to the free ends. The ends of the two arc surfaces far from the side grooves approach each other to form an inclined guiding surface. After the two clamping pieces approach each other within the elastic deformation amount, they are inserted into the through holes on the PCB board, and both the two arc surfaces and the two side grooves can be tightly fitted with the through holes on the PCB board.

[0005] As a preferred embodiment, the positioning post has a radially extending elongated hole, the long axis of which is parallel to the axial direction of the positioning post. On the outer surfaces of the positioning post located on both sides of the elongated hole, outwardly protruding anti-reverse protrusions are symmetrically arranged, and the anti-reverse protrusions are elastic.

[0006] As a preferred embodiment, the outer walls on both sides of the base are provided with outwardly protruding hooks, and the two sides of the top cover are respectively connected to side plates extending towards the base. The side plates cover the outer sides of the base, and the inner side of the side plates is provided with buckles that cooperate with the hooks.

[0007] As a preferred embodiment, the width of the slot is less than the distance between the outer sides of the two crimping tabs on the same connecting terminal. When the two crimping tabs are inserted into the slot, they are squeezed together and clamp the wire.

[0008] The beneficial effects of this invention are as follows: This invention utilizes two crimping tabs at one end of the connecting terminal to engage with slots on the top cover, securing the wire within the snap-fit ​​groove between the two crimping tabs, thus reliably connecting the wire to the connecting terminal and achieving a solderless, quick connection between the connecting terminal and the wire. Simultaneously, two snap-fit ​​tabs at the other end of the connecting terminal are inserted into vias on the PCB board, and under the elastic action of the snap-fit ​​tabs, they tightly engage with the vias, achieving a solderless, quick connection between the connecting terminal and the PCB board. This solves the technical problems of traditional wire-to-PCB board connections requiring soldering, which are difficult and inefficient.

[0009] This invention features elongated holes in the positioning posts, allowing the posts on both sides of the holes to retract inwards. This enables the anti-reverse bumps to pass through the PCB board. Once through the PCB board, the anti-reverse bumps prevent the positioning posts from being pulled out in the opposite direction, ensuring a stable connection between the base and the PCB board. This also facilitates a stable and reliable connection between the auxiliary connection terminals and the PCB board. The anti-reverse bumps are made of elastic material, increasing the friction between them and the PCB board, making it more difficult to insert or remove the positioning posts, and further improving the connection stability between the base and the PCB board.

[0010] This invention further employs a hook and snap-fit ​​connection method to connect the base and the top cover. This hook and snap-fit ​​connection method is simple, practical, and easy to injection mold, and provides a reliable connection. It can provide sufficient tensile force to the top cover, enabling it to overcome the reaction force of the wires on the connecting terminals and stably connect to the base. Conversely, the hook and snap-fit ​​connection method also provides sufficient pressure to the connecting terminals to clamp the wires, ensuring a reliable connection between the wires and the connecting terminals. Attached Figure Description

[0011] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0012] Figure 1 This is an exploded view of the three-dimensional structure of the present invention;

[0013] Figure 2 is a partial cross-sectional view of the assembled state of the present invention;

[0014] Figure 3 is a schematic structural diagram of the connection terminal of the present invention;

[0015] Figures 1-3 In the figure: 1. Base, 2. Top cover, 3. Connection terminal, 3a. Positioning part, 3b. Crimping piece, 3c. Clamping piece, 4. Insertion hole, 5. Slot, 6. Positioning column, 7. PCB board, 8. Guide groove, 9. Clamping groove, 10. Side groove, 11. Arc surface, 12. Guide surface, 13. Long hole, 14. Anti-reverse convex block, 15. Hook, 16. Side plate, 17. Buckle, 18. Through hole. Specific embodiments

[0016] The following will describe the specific implementation of the present invention in detail with reference to the accompanying drawings.

[0017] As Figures 1-3 shown, a quick solderless connector for connecting a wire and a PCB board includes a base 1, a top cover ②, and a plurality of connection terminals 3. The top end of the base 1 faces the top cover 2, and the bottom end of the base 1 faces the PCB board. The base 1 is vertically provided with insertion holes 4 corresponding to the connection terminals 3 one by one. Each connection terminal 3 is fixedly inserted into the corresponding connection hole 4, and both ends of the connection terminal 3 extend out of the base 1. The top cover 2 is provided with slots 5 corresponding to the connection terminals 3 one by one. When the top cover 2 is fixedly covered on the base 1, one end of each connection terminal 3 is inserted into the corresponding slot 5; the bottom end of the base is provided with a plurality of positioning columns 6 extending outward. The axial direction of the positioning column 6 is parallel to the axial direction of the insertion hole 4. The positioning column 6 is used to connect the PCB board. Any connection terminal 3 includes a positioning part 3a, two separated crimping pieces 3b connected to one end of the positioning part 3a close to the top cover 2, and two separated clamping pieces 3c connected to one end of the positioning part 3a far from the top cover 2; the positioning part 3a is clamped with the insertion hole 4. The two crimping pieces 3b are symmetrical to each other. The ends of the two crimping pieces 3b far from the positioning part 3a are separated from each other to form a "V" - shaped guide groove 8. The ends of the two crimping pieces 3b close to the positioning part 3a are parallel to each other to form an "I" - shaped clamping groove 9. The guide groove 8 and the clamping groove 9 are vertically connected. The two crimping pieces 3b can be inserted into the same slot 5; the two clamping pieces 3c are symmetrically arranged. One side of the middle parts of the two clamping pieces 3c facing away from each other respectively contracts inward to form side grooves 10. The sides of the two clamping pieces 3c facing away from each other are arched outward from the side grooves 10 to the free ends to form arc surfaces 11. The ends of the two arc surfaces 11 far from the side grooves 10 approach each other to form inclined guide surfaces 12. After the two clamping pieces 3c approach each other within the elastic deformation amount, they are inserted into the through holes 18 on the PCB board. The two arc surfaces 11 and the two side grooves 10 can be tightly fitted with the through holes 18 on the PCB board.

[0018] This embodiment utilizes the two crimping tabs 3b at one end of the connecting terminal 3 to engage with the slot 5 on the top cover 2, securing the wire within the snap-fit ​​groove 9 between the two crimping tabs 3b. This ensures a reliable connection between the wire and the connecting terminal 3, achieving a solderless and quick connection between the connecting terminal 3 and the wire. Simultaneously, the two snap-fit ​​tabs 3c at the other end of the connecting terminal 3 are inserted into the through-holes 18 on the PCB board 7. The elasticity of the snap-fit ​​tabs 3c allows for a tight fit with the through-holes 18, achieving a solderless and quick connection between the connecting terminal 3 and the PCB board 7. This solves the technical problems of traditional wire-to-PCB board connections requiring soldering, which are difficult and inefficient.

[0019] In this embodiment, a radially extending elongated hole 13 is provided on the positioning post 6. The long axis of the elongated hole 13 is parallel to the axial direction of the positioning post 6. Outwardly protruding anti-reverse bumps 14 are symmetrically arranged on the outer surfaces of the positioning posts 6 on both sides of the elongated hole 13. The anti-reverse bumps 14 are elastic. The elongated hole 13 on the positioning post 6 allows the positioning posts 6 on both sides of the elongated hole 13 to retract inward, allowing the anti-reverse bumps 14 to pass through the PCB board 7. After passing through the PCB board 7, the anti-reverse bumps 14 can prevent the positioning post 6 from being pulled out in the reverse direction, ensuring that the base 1 is stably connected to the PCB board 7, and that the auxiliary connection terminal 3 is stably and reliably connected to the PCB board 7. The anti-reverse bumps 14 are made of elastic material, which increases the friction between the anti-reverse bumps 14 and the through holes 18 on the PCB board 7, increasing the difficulty of inserting and removing the positioning post 6, and further improving the connection stability between the base 1 and the PCB board 7.

[0020] In this embodiment, the specific connection structure between the base 1 and the top cover 2 is as follows: Outwardly protruding hooks 15 are respectively provided on the outer walls of both sides of the base 1; side plates 16 extending towards the base 1 are respectively connected to both sides of the top cover 2, covering the outer sides of the base 1; and buckles 17 that cooperate with the hooks 15 are provided on the inner sides of the side plates 16. The connection method of the hooks 15 and buckles 17 is simple and practical, easy to injection mold, and reliable. It can provide sufficient tension to the top cover 2, enabling the top cover 2 to overcome the reaction force of the wire on the connecting terminal 3 and stably connect to the base 1. Conversely, the connection method of the hooks 15 and buckles 17 also provides sufficient pressure to the connecting terminal 3 to press the wire, ensuring a reliable connection between the wire and the connecting terminal 3.

[0021] In this embodiment, it is further preferred that the width of the slot 5 is less than the distance between the outer sides of the two crimping pieces 3b on the same connecting terminal 3. This way, when the two crimping pieces 3b are inserted into the slot 5, they are squeezed inwards and clamp the wire, making the connection between the wire and the connecting terminal 3 more reliable.

[0022] The working process of this invention is as follows: Figures 1-3As shown, first, all connecting terminals 3 are inserted into the corresponding insertion holes 4. Then, the insulation layer at the end of the wire is removed, and the exposed wire is inserted into the guide groove 8 at the end of each connecting terminal. Then, the top cover 2 is placed on the base 1 and pressed down so that the buckles 17 on the side plates 16 of the top cover 2 pass over the hooks 15. Then, the top cover 2 is released. The top cover 2 is fixedly connected to the base 1 under the connection of the buckles 17 and the hooks 15. During the pressing down of the top cover 2, the two crimping pieces 3b at one end of any connecting terminal 3 are inserted into the corresponding slots 5 on the top cover 2. Under the obstruction of the top cover 2, the exposed wire slides along the guide groove 8 into the narrow snap-fit ​​groove 9. The wire is squeezed and tightly connected to the snap-fit ​​groove 9, achieving a good and stable conductivity.

[0023] After connecting the wires to the connector, insert the positioning post 6 at the bottom of the base 1 into the positioning hole on the PCB board 7. At the same time, the two snap-fit ​​pieces 3c of each connecting terminal 3 are aligned with the through hole 18 on the PCB board 7. Press down on the base 1 to make the anti-reverse protrusion 14 on the positioning post 6 pass through the positioning hole. Meanwhile, the free ends of the two snap-fit ​​pieces 3c of any connecting terminal 3 are first inserted into the corresponding through hole 18. Under the guidance of the guide surface 12, the two snap-fit ​​pieces 3c move closer to each other due to elastic deformation when passing through the through hole 18, so that the arc surface 11 of the snap-fit ​​piece 3c passes smoothly through the through hole 18. When the side groove 10 of the snap-fit ​​piece 3c is opposite to the through hole 18, the two snap-fit ​​pieces 3c expand outward and make the side groove 10 of the snap-fit ​​piece 3c fit tightly against the inner wall of the through hole 18 on the PCB board 7. The arc surface 11 passing through the PCB board 7 prevents the connecting terminal 3 from being pulled out, so that the connecting terminal 3 is reliably connected to the PCB board 7.

[0024] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A quick-connect, solderless connector for connecting wires and a PCB board, characterized in that, It includes a base (1), a top cover (2) and multiple connection terminals (3). The top end of the base (1) faces the top cover (2), and the bottom end of the base (1) faces the PCB board. Vertically opened on the base (1) are insertion holes (4) corresponding one-to-one to the connection terminals (3). Each connection terminal (3) is fixedly inserted into the corresponding insertion hole (4), and both ends of the connection terminal (3) extend out of the base (1). On the top cover (2) are opened slots (5) corresponding one-to-one to the connection terminals (3). When the top cover (2) is fixedly covered on the base (1), one end of each connection terminal (3) is inserted into the corresponding slot (5); on the bottom end of the base (1) are provided multiple positioning columns (6) extending outwards. The axial direction of the positioning columns (6) is parallel to the axial direction of the insertion holes (4). The positioning columns (6) are used to connect the PCB board. Any one connection terminal (3) includes a positioning part (3a), two separated crimping pieces (3b) connected to one end of the positioning part (3a) close to the top cover (2), and two separated clamping pieces (3c) connected to one end of the positioning part (3a) far from the top cover (2); the positioning part (3a) is clamped with the insertion hole (4). The two crimping pieces (3b) are symmetrical to each other. The ends of the two crimping pieces (3b) far from the positioning part (3a) are separated from each other to form a "V"-shaped guiding groove (8). The ends of the two crimping pieces (3b) close to the positioning part (3a) are parallel to each other to form an "I"-shaped clamping groove (9). The guiding groove (8) and the clamping groove (9) are connected up and down. The two crimping pieces (3b) can be inserted into the same slot (5); the two clamping pieces (3c) are symmetrically arranged. On the sides of the two clamping pieces (3c) opposite to each other in the middle, they respectively contract inwards to form side grooves (10). On the sides of the two clamping pieces (3c) opposite to each other, from the side grooves (10) to the free ends are arc surfaces (11) arched outwards. The ends of the two arc surfaces (11) far from the side grooves (10) approach each other to form inclined guiding surfaces (12). After the two clamping pieces (3c) approach each other within the elastic deformation amount, they are inserted into the through holes on the PCB board. The two arc surfaces (11) and the two side grooves (10) can be in tight fit with the through holes on the PCB board; All the connection terminals (3) are inserted into the corresponding insertion holes (4). Then, the insulating layers at the ends of the wires are removed, and the bare wires are inserted into the guiding grooves (8) at the ends of each connection terminal one-to-one. Then, the top cover (2) is covered on the base (1). During the pressing process of the top cover (2), the two crimping pieces (3b) at one end of any one connection terminal (3) are inserted into the corresponding slot (5) on the top cover (2). Under the blocking effect of the top cover (2), the bare wires slide along the guiding groove (8) into the narrow clamping groove (9). The wires are squeezed and tightly connected with the clamping groove (9), achieving a good and stable conductive effect.

2. The quick-connect, solderless connector for connecting wires and a PCB board according to claim 1, characterized in that, On the positioning column (6) is opened a long hole (13) extending radially. The long axis direction of the long hole (13) is parallel to the axial direction of the positioning column (6). On the outer side surfaces of the positioning column (6) on both sides of the long hole (13), outwardly protruding anti-reverse bumps (14) are symmetrically arranged. The anti-reverse bumps (14) have elasticity.

3. The quick-connect, solderless connector for connecting wires and a PCB board according to claim 1, characterized in that, The base (1) has outward protruding hooks (15) on both outer walls. The top cover (2) has side plates (16) extending towards the base (1) on both sides. The side plates (16) cover the two sides of the base (1). The inner side of the side plates (16) has buckles (17) that cooperate with the hooks (15).

4. The quick-connect, solderless connector for connecting wires and a PCB board according to claim 1, characterized in that, The width of the slot (5) is less than the distance between the outer sides of the two crimping pieces (3b) on the same connecting terminal (3). When the two crimping pieces (3b) are inserted into the slot (5), they are squeezed and move inward to clamp the wire.

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