A connector

Abstract

The application relates to a connector, and relates to the technical field of the connector, which comprises a shell, one or more mounting grooves for mounting connecting terminals are arranged in the shell, the connecting terminals are arranged in the mounting grooves, connecting clamps are arranged on one side of the connecting terminals, a fastening plate is further arranged, a clamping groove is arranged in the shell and used for clamping the fastening plate, the fastening plate is provided with a pressing plate which extends into the mounting groove and abuts against the surface of the connecting clamp, the abutting surface of the pressing plate and the connecting clamp is an arc-shaped groove, a wedge-shaped self-locking mechanism is arranged between the fastening plate and the clamping groove, when a wire is subjected to a pulling force towards the outside of the connector, the wedge-shaped self-locking mechanism drives the fastening plate and the pressing plate to slide along the clamping groove towards the connecting terminal, so that the arc-shaped groove wall presses and deforms the connecting clamp to increase the clamping force of the connecting clamp on the wire. The application has the technical effect that the clamping force of the connecting clamp on the wire can be automatically increased when the wire is subjected to the pulling force, and the connection stability is ensured.

Description

Technical Field

[0001] This application relates to the field of connector technology, and in particular to a connector. Background Technology

[0002] In the field of electronic equipment and electrical system connections, connectors, as crucial components, have always received considerable attention for their development. With the rapid advancement of electronic technology, various electronic devices are constantly emerging and becoming increasingly powerful, placing higher demands on the performance and reliability of connectors. Connectors play a key role in signal transmission and power supply in electronic equipment, and their performance directly affects the stability and operating efficiency of the entire system. Good connectors ensure accurate signal transmission, avoiding signal interference and loss, thereby guaranteeing the normal operation of equipment. In many fields such as industrial automation, communications, and aerospace, the stable operation of connectors is even more critical to the safety and reliability of the entire system.

[0003] In related technologies, the common method for connecting wires to terminals is to directly utilize the elasticity of the connector clip to hold the wire. This method uses the clamping force generated by the elastic deformation of the connector clip itself to fix the wire to the terminal. In addition, some connectors have additional simple fixing structures on the connector clip, such as clips or slots, to enhance the stability of the connection. Other connectors use welding to connect the wires and terminals, melting the welding material at high temperatures to firmly bond the wires and terminals. Crimping is also a common method, using a crimping tool to apply pressure to the connection area, ensuring a tight connection between the wires and terminals.

[0004] However, existing connection methods have certain shortcomings. When the wire is subjected to a pulling force towards the connector, traditional connection methods struggle to effectively resist this force. Relying solely on the elastic clamping of the wire has limited clamping force; under significant tension, the clamp is prone to loosening, leading to unstable connections between the wire and the connector terminal, or even detachment. Simple clips or slots for fixing are susceptible to damage or deformation under prolonged use or significant impact, thus failing to provide a reliable connection. While soldering and crimping can provide relatively strong connections, they are prone to cracking at the solder joints or loosening at the crimped joints under tension, similarly failing to guarantee a stable connection between the wire and the connector terminal. Summary of the Invention

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide a connector.

[0006] A connector includes a housing, one or more mounting slots for mounting connecting terminals are provided inside the housing, connecting terminals are provided in the mounting slots, and a connecting clip for holding wires is provided on one side of the connecting terminals. It also includes a fastening plate, a snap-fit ​​groove for snapping the fastening plate is provided inside the housing, and a pressure plate is provided on the fastening plate. The pressure plate extends into the mounting slot and abuts against the surface of the connecting clip corresponding to the position. The contact surface between the pressure plate and the connecting clamp is an arc-shaped groove, and the curved surface of the arc-shaped groove matches the curved shape of the connecting clamp. A wedge-shaped self-locking mechanism is provided between the fastening plate and the snap-fit ​​groove. When the wire is subjected to a pulling force toward the outside of the connector, the wedge-shaped self-locking mechanism is configured to drive the fastening plate and pressure plate to slide along the snap-fit ​​groove toward the connection terminal, so that the groove wall of the arc groove presses the connection clamp to undergo elastic deformation, thereby increasing the clamping force of the connection clamp on the wire.

[0007] By adopting the above technical solution, a fastening plate and a pressure plate are set up. The pressure plate extends into the mounting groove and abuts against the connector, which can improve the connection stability between the connector terminal and the wire. The abutting surface of the pressure plate and the connector is an arc-shaped groove that matches the bending shape of the connector, which can make the two fit better. A wedge-shaped self-locking mechanism is set up. When the wire is subjected to a pulling force towards the connector, it can drive the fastening plate and the pressure plate to slide along the snap-fit ​​groove towards the connector terminal, so that the groove wall of the arc-shaped groove presses the connector to deform elastically, increasing the clamping force of the connector on the wire.

[0008] Optionally, the wedge self-locking mechanism includes a wedge-shaped snap-fit ​​block disposed on the fastening plate and a wedge-shaped mating block disposed on the inner wall of the snap-fit ​​groove, wherein the inclined surface of the wedge-shaped snap-fit ​​block engages with the inclined surface of the wedge-shaped mating block.

[0009] By adopting the above technical solution, an installation groove is opened inside the housing for installing the connection terminal. The connection clamp on one side of the connection terminal can hold the wire. The fastening plate is installed inside the housing through the snap-fit ​​groove. The pressure plate on it extends into the installation groove and abuts against the surface of the connection clamp. The abutting surface is an arc-shaped groove that matches the bending shape of the connection clamp. When the wire is subjected to a pulling force towards the connector, the wedge self-locking mechanism composed of the wedge snap-fit ​​block and the wedge mating block can drive the fastening plate and the pressure plate to slide along the snap-fit ​​groove towards the connection terminal. This causes the groove wall of the arc-shaped groove to compress the connection clamp and cause elastic deformation, increasing the clamping force of the connection clamp on the wire and improving the connection stability between the connection terminal and the wire.

[0010] Optionally, the angle between the inclined surface of the wedge-shaped snap-fit ​​block and the inclined surface of the wedge-shaped mating block is 5° to 25°.

[0011] By adopting the above technical solution, a connecting terminal and a fastening plate are installed inside the housing. The pressure plate abuts against the connecting clamp. The wedge-shaped self-locking mechanism consists of a wedge-shaped snap-fit ​​block and a wedge-shaped mating block with an included angle of 5° to 25°. When the wire is subjected to a pulling force toward the outside of the connector, the wedge-shaped self-locking mechanism can drive the fastening plate and the pressure plate to slide along the snap-fit ​​groove toward the connecting terminal, so that the groove wall of the arc-shaped groove presses the connecting clamp to deform elastically, increasing the clamping force of the connecting clamp on the wire and ensuring a stable connection between the wire and the connecting terminal.

[0012] Optionally, the radius of curvature of the arc groove matches the radius of curvature of the bent portion of the connecting clamp, and the groove wall of the arc groove remains in contact with the bent portion of the connecting clamp during the sliding of the fastening plate.

[0013] By adopting the above technical solution, during the sliding process of the fastening plate, the wall of the arc groove and the bent part of the connecting clamp always remain in contact, ensuring that the connecting clamp can be stably compressed and deformed during the force process, continuously and effectively increasing the clamping force on the wire and improving the stability of the wire connection.

[0014] Optionally, the fastening plate has a groove, and the inner wall of the groove is provided with an anti-slip strip, which is suitable for contacting the surface of the wire when the fastening plate is installed in place.

[0015] By adopting the above technical solution, the fastening plate has a groove and the inner wall of the groove is provided with an anti-slip strip. When the fastening plate is installed in place, the anti-slip strip abuts against the surface of the wire, which can increase the friction with the surface of the wire and prevent the wire from loosening.

[0016] Optionally, the connecting clip may be a U-shaped clip, V-shaped clip, or spring clip integrally formed from a flexible metal material.

[0017] By adopting the above technical solution, the connecting clamp is integrally formed from elastic metal material into a U-shaped clamp, V-shaped clamp, or spring clamp. The good elasticity and conductivity of the elastic metal ensure the reliable clamping of the wire and the stability of the electrical connection.

[0018] Optionally, a guide ramp is provided at the entrance of the snap-fit ​​slot, and a chamfer is provided on the fastening plate at the position corresponding to the guide ramp.

[0019] By adopting the above technical solution, a guide slope is set at the entrance of the snap-fit ​​groove and a chamfer is set at the corresponding position of the fastening plate, which can reduce the friction loss between the wedge-shaped snap-fit ​​block and the guide slope and facilitate the installation of the fastening plate.

[0020] Optionally, the fastening plate is integrally injection molded from engineering plastic, and the pressure plate and wedge-shaped snap-fit ​​blocks are part of the fastening plate.

[0021] By adopting the above technical solutions and using engineering plastic injection molding of the fastening plate, production costs can be reduced and production efficiency can be improved; by making the pressure plate and wedge-shaped snap-fit ​​block part of the fastening plate, the overall structure and stability can be enhanced, the number of parts can be reduced, and the assembly difficulty and cost can be reduced.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. When the wire is subjected to a pulling force toward the outside of the connector, the wedge-shaped self-locking mechanism drives the fastening plate and pressure plate to slide along the snap-fit ​​groove toward the connection terminal, so that the groove wall of the arc groove presses the connection clamp to undergo elastic deformation, increasing the clamping force of the connection clamp on the wire and improving the connection stability between the connection terminal and the wire. 2. The anti-slip strips on the inner wall of the pressure groove abut against the surface of the wire when the fastening plate is installed in place, increasing the friction with the surface of the wire and preventing the wire from loosening; 3. The radius of curvature of the arc groove matches the radius of curvature of the bent part of the connecting clamp, and during the sliding of the fastening plate, the groove wall of the arc groove remains in contact with the bent part of the connecting clamp to ensure that the connecting clamp is always under effective pressure. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is an exploded structural diagram of the present application, mainly showing the connecting terminals and fastening plate; Figure 3 This is a cross-sectional structural diagram of the present application, mainly showing the guide block, positioning block, and snap-fit ​​platform; Figure 4 This is a structural schematic diagram of the present application, mainly showing the connection terminals; Figure 5 This is a structural schematic diagram of the present application, mainly showing the pressure groove and the arc groove.

[0024] Figure Descriptions: 1. Outer shell; 2. Insertion slot; 3. Mounting slot; 4. Connecting terminal; 401. Pin; 402. Positioning plate; 403. Claw; 5. Connecting clamp; 6. Wire; 7. Fastening plate; 8. Guide block; 9. Limiting hole; 10. Positioning block; 11. Relief slot; 12. Snap-fit ​​platform; 13. Pressure groove; 14. Anti-slip strip; 15. Pressure plate; 16. Arc groove; 17. Snap-fit ​​groove; 18. Guide slope; 19. Wedge-shaped snap-fit ​​block; 10. Wedge-shaped mating block. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0026] A connector, reference Figure 1 , Figure 2The device includes a housing 1. One side of the housing 1 has a connector slot 2 for insertion into an external connector. The bottom of the connector slot 2 has two rows of mounting slots 3 for mounting connector terminals 4, with five mounting slots 3 in each row. Connector terminals 4 are installed within the mounting slots 3. One side of each connector terminal 4 has a connector clip 5 for holding a wire 6, and the connector clip 5 holds the wire 6. The other side has an integrally formed pin 401 that extends into the connector slot 2. Additionally, each row of mounting slots 3 has a corresponding fastening plate 7, which enhances the connection stability between the connector terminal 4 and the wire 6.

[0027] Reference Figure 2 , Figure 3 A guide block 8 is fixedly connected to the inner wall of the mounting groove 3 near the bottom of the insertion groove 2. The guide block 8 has three inclined surfaces, each inclined from the inner wall of the mounting groove 3 towards the opening of the insertion groove 2. The extensions of the axes on each inclined surface intersect at a single point. The three inclined surfaces of the guide block 8 together form a limiting hole 9. When the connecting terminal 4 extends into the groove from the opening on one side of the bottom of the mounting groove 3 and the insertion groove 2, the pin 401 of the connecting terminal 4 abuts against the inclined surface on the guide block 8, thereby extending the limiting hole 9 into the insertion groove 2. The end of the pin 401 of the connecting terminal 4 has a rounded chamfer to reduce frictional loss between it and the guide block 8.

[0028] Two positioning plates 402 are integrally formed on the connecting terminal 4, and a positioning gap is provided between the two positioning plates 402. At the same time, a positioning block 10 is integrally formed on the inner wall of the mounting groove 3, and the two sides of the positioning block 10 cooperate with the corresponding inner wall of the mounting groove 3 to form a limiting gap. When the connecting terminal 4 and the outer shell 1 are installed in place, the positioning block 10 extends into the positioning gap, and the positioning plate 402 extends into the limiting gap, thereby limiting the left and right positions of the connecting terminal 4 in the mounting groove 3.

[0029] Reference Figure 2 , Figure 3 , Figure 4 The mounting groove 3 has a clearance groove 11, which communicates with the limiting block and the insertion groove 2. A locking platform 12 is fixedly connected to the inner wall of the clearance groove 11. The locking platform 12 has a first inclined surface on the side away from the guide block 8, and this first inclined surface is inclined towards the positioning block 10. The locking platform 12 also has a second inclined surface on the side near the guide block 8, and this second inclined surface is inclined towards the positioning block 10. The angle between the first inclined surface and the bottom of the clearance groove 11 is smaller than the angle between the second inclined surface and the bottom of the clearance groove 11. Additionally, a claw 403 is integrally formed on the connecting terminal 4. When the connecting terminal 4 is inserted, the claw 403 first slides along the first inclined surface of the locking platform 12 and undergoes elastic deformation. After the connecting terminal 4 is installed in place, the claw 403 abuts against the second inclined surface and cooperates with the second inclined surface to limit the position of the connecting terminal 4.

[0030] Reference Figure 2 , Figure 4 The connecting clip 5 is fixedly connected to the side of the connecting terminal 4 away from the pin 401, and two connecting clips 5 are provided. One connecting clip 5 closer to the pin 401 is used to connect the stripped wire 6, and the other connecting clip 5 is used to connect the unstripped wire 6. Furthermore, the connector is a U-shaped clip, V-shaped clip, or spring clip integrally formed from an elastic metal material. The elastic metal material has good elasticity and conductivity, such as stainless steel. Taking the U-shaped clip as an example, it has two elastic arms. When the wire 6 is inserted, the elastic arms will undergo elastic deformation, thereby generating a clamping force on the wire 6. Simultaneously, the connecting clip 5 and the connecting terminal 4 can be connected by welding to ensure the reliability of the electrical connection.

[0031] Reference Figure 2 , Figure 5 The fastening plate 7 is integrally injection molded from engineering plastic. Five pressure grooves 13 are formed on the fastening plate 7, and each pressure groove 13 corresponds to a wire 6 held on a connecting terminal 4. Additionally, an anti-slip strip 14 is integrally formed on the pressure groove 13. The anti-slip strip 14 can be made of rubber, which has good elasticity and friction. When the wire 6 passes through the pressure groove 13, the anti-slip strip 14 adheres to the surface of the wire 6, thereby increasing the friction with the surface of the wire 6 and preventing the wire 6 from loosening.

[0032] Five pressure plates 14 are integrally formed on the fastening plate 7, and each pressure plate 14 corresponds to a pressure groove 13. The pressure plates 14 extend into the corresponding mounting groove 3 and abut against the surface of the connecting clip 5 of the corresponding connecting terminal 4. In addition, an arc-shaped groove 15 matching the curved shape of the connecting clip 5 is formed on the side of the pressure plate 14 near the wire 6. The connecting clip 5 extends into the arc-shaped groove 15 and the curved part of the connecting clip 5 abuts against the inner wall of the arc-shaped groove 15. At the same time, the radius of curvature of the arc-shaped groove 15 matches the radius of curvature of the curved part of the connecting clip 5, so that when the fastening plate 7 slips, the groove wall of the arc-shaped groove 15 and the curved part of the connecting clip 5 always remain in contact.

[0033] Reference Figure 2 , Figure 3 , Figure 5The mounting groove 3 has a snap-fit ​​groove 16 on its side wall, and the snap-fit ​​groove 16 on the mounting groove 3 near the side of the outer shell 1 is open. At the same time, the mounting groove 3 has a recessed groove communicating with the snap-fit ​​groove 16 on its side wall, and the bottom of the recessed groove is set as a guide slope 17. Both sides of the pressure plate 14 are integrally formed with wedge-shaped snap-fit ​​blocks 18. During installation, the wedge-shaped snap-fit ​​blocks 18 slide along the guide slope 17, and after installation, the wedge-shaped snap-fit ​​blocks 18 extend into the snap-fit ​​groove 16. At the same time, the side of the wedge-shaped snap-fit ​​blocks 18 that contacts the guide slope 17 is chamfered to reduce friction loss between the wedge-shaped snap-fit ​​blocks 18 and the guide slope 17.

[0034] Referring to Figure X, a wedge-shaped mating block 19 is fixedly connected to the inner wall of the snap-fit ​​groove 16 on the side away from the positioning block 10. After the wedge-shaped snap-fit ​​block 18 is installed in place, the inclined surface of the wedge-shaped snap-fit ​​block 18 matches the inclined surface of the wedge-shaped mating block 19, and the wedge-shaped mating block 19 smoothly transitions with the guide slope 17. The angle between the inclined surfaces of the wedge-shaped snap-fit ​​block 18 and the wedge-shaped mating block 19 is 5° to 25°. When the wire 6 is subjected to a pulling force towards the outside of the connector, the wedge-shaped self-locking mechanism drives the fastening plate 7, along with the pressure plate 14, to slide along the snap-fit ​​groove 16 towards the connecting terminal 4. The inclined surface design of the wedge-shaped snap-fit ​​block 18 and the wedge-shaped mating block 19 generates a component force along the direction of the snap-fit ​​groove 16 when subjected to a pulling force, thereby pushing the fastening plate 7 to move. For example, when the included angle is 15°, under the tension of the wire 6, the wedge-shaped snap block 18 slides in the wedge-shaped mating block 19, converting the tension into a force that moves the fastening plate 7 toward the connecting terminal 4.

[0035] The implementation principle of this embodiment is as follows: In the initial installation state, the operator inserts the wire 6 into the connecting clip 5 of the connecting terminal 4 to obtain initial clamping. Subsequently, the fastening plate 7 is pushed in along the guide slope 17 of the snap-fit ​​groove 16 until the wedge-shaped snap-fit ​​block 18 on it is fully engaged with the wedge-shaped mating block 19 in the snap-fit ​​groove 16. At this time, the pressure plate 14 has extended into the mounting groove 3, and its arc-shaped groove 15 abuts against the curved surface of the connecting clip 5. The anti-slip strip 14 in the pressure groove 13 also makes slight contact with the surface of the wire 6, forming an initial stable state.

[0036] When the lead wire 6 is subjected to an unexpected pulling force towards the outside of the connector, this force is transmitted through the lead wire 6 to the connecting terminal 4, attempting to pull the connecting terminal 4 out along with the fastening plate 7. A component of this pulling force acts on the wedge-shaped self-locking mechanism. The pulling force creates a tendency for the wedge-shaped locking block 18 to disengage from the wedge-shaped mating block 19. Due to the characteristics of the wedge surface, this disengagement force is converted into a large normal pressure perpendicular to the inclined plane. This normal pressure, when the self-locking condition is met, generates a static friction force sufficient to prevent disengagement, achieving the first locking. More importantly, this normal pressure simultaneously generates a component force that drives the entire fastening plate 7 to slide along the locking groove 16 into the connecting terminal 4.

[0037] The sliding force of the fastening plate 7 causes the pressure plate 14 to move together. The groove wall of the arc-shaped groove 15 on the pressure plate 14 then presses against the curved part of the connecting clamp 5. Since the curved surface of the arc-shaped groove 15 matches the shape of the connecting clamp 5, this pressure force is efficiently transmitted, forcing the elastic arm of the connecting clamp 5 to undergo further elastic deformation, narrowing its opening, thereby significantly increasing the radial clamping force on the internal wire 6. This is a second locking, and the increase in clamping force is much greater than the externally applied tension.

[0038] The above process forms a positive feedback loop: the greater the external pulling force, the greater the sliding force generated, which in turn leads to a greater deformation of the connector 5 and a greater clamping force on the wire 6. This mechanism enables the connector to have adaptive force amplification capability, perfectly resisting vibration and accidental pulling. At the same time, the anti-slip strip 14 in the pressure groove 13 provides an additional anti-loosening guarantee, forming a double insurance mechanism of "active force amplification" and "passive anti-slip".

[0039] In summary, this application, through ingenious mechanical structure design, intelligently transforms external destructive tensile forces into beneficial internal clamping forces, fundamentally improving the extreme reliability of electrical connections under dynamic operating conditions.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A connector, comprising a housing (1), wherein one or more mounting slots (3) for mounting connecting terminals (4) are provided within the housing (1), the mounting slots (3) are provided with connecting terminals (4), and a connecting clip (5) for holding wires (6) is provided on one side of the connecting terminals (4), characterized in that: It also includes a fastening plate (7), and the outer shell (1) is provided with a snap-fit ​​groove (16) for snapping the fastening plate (7). A pressure plate (14) is provided on the fastening plate (7), and the pressure plate (14) extends into the mounting groove (3) and abuts against the surface of the corresponding connecting clip (5). The contact surface between the pressure plate (14) and the connecting clamp (5) is an arc-shaped groove (15), and the curved surface of the arc-shaped groove (15) matches the curved shape of the connecting clamp (5). A wedge-shaped self-locking mechanism is provided between the fastening plate (7) and the snap-fit ​​groove (16). When the wire (6) is subjected to a pulling force toward the outside of the connector, the wedge-shaped self-locking mechanism is configured to drive the fastening plate (7) and the pressure plate (14) to slide along the snap-fit ​​groove (16) toward the connecting terminal (4), so that the groove wall of the arc groove (15) presses the connecting clip (5) to undergo elastic deformation, thereby increasing the clamping force of the connecting clip (5) on the wire (6). The wedge-shaped self-locking mechanism includes a wedge-shaped snap-fit ​​block (18) disposed on the fastening plate (7) and a wedge-shaped docking block (19) disposed on the inner wall of the snap-fit ​​groove (16), wherein the inclined surface of the wedge-shaped snap-fit ​​block (18) and the inclined surface of the wedge-shaped docking block (19) cooperate. The angle between the inclined surface of the wedge-shaped snap block (18) and the inclined surface of the wedge-shaped mating block (19) is 5° to 25°.

2. The connector according to claim 1, characterized in that: The radius of curvature of the arc groove (15) matches the radius of curvature of the bent portion of the connecting clamp (5), and during the sliding process of the fastening plate (7), the groove wall of the arc groove (15) remains in contact with the bent portion of the connecting clamp (5).

3. A connector according to claim 1, characterized in that: The fastening plate (7) has a pressure groove (13), and the inner wall of the pressure groove (13) is provided with an anti-slip strip (14). The anti-slip strip (14) is adapted to abut against the surface of the wire (6) when the fastening plate (7) is installed in place.

4. A connector according to claim 1, characterized in that: The connecting clip (5) is a U-shaped clip, V-shaped clip, or spring clip integrally formed from elastic metal material.

5. A connector according to claim 1, characterized in that: The entrance of the snap-fit ​​groove (16) is provided with a guide slope (17), and the fastening plate (7) is provided with a chamfer at the position corresponding to the guide slope (17).

6. A connector according to claim 1, characterized in that: The fastening plate (7) is integrally injection molded from engineering plastic, and the pressure plate (14) and the wedge-shaped snap-fit ​​block (18) are part of the fastening plate (7).

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