A dual-in-line wire wrap terminal

Abstract

The application discloses a double-wire straight-plug wiring terminal and belongs to the technical field of wiring terminals. The wiring terminal comprises a shell, an internal hollow cavity, a positioning column fixed to the inner wall of the cavity, a current-carrying body, symmetrical clamping arms arranged at the two ends of the current-carrying body, the current-carrying body being in limiting cooperation with the positioning column, an elastic sheet comprising a cylindrical part and a clamping part, the cylindrical part being sleeved on the positioning column, the cylindrical part being provided with an opening penetrating along the height direction of the cylindrical part, the inner wall of the opening extending into cantilever arms on both sides towards the clamping arms, the cantilever arms being symmetrically arranged with the center of the cylindrical part, the inner end of each cantilever arm being integrated with the cylindrical part, the outer end of each cantilever arm being fixed with the clamping part, the clamping part being in abutment with the clamping arm, and a button, the bottom of the button being symmetrically formed with pressure arms, the two pressure arms being capable of penetrating into the cavity and synchronously abutting against the two cantilever arms. The application can simultaneously release two wires by once pressing the button, and the wire changing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of terminal block technology, and more specifically, to a two-wire direct-insertion terminal block. Background Technology

[0002] Direct-insertion terminal blocks are electrical connection components that enable quick, tool-free wiring through a spring-clamping mechanism. They are widely used in industrial control, power systems, and building automation. When it's necessary to connect more wires in a limited space, or to distribute power at the same connection point, a dual-wire approach is typically used. Traditional dual-wire approach structures generally consist of two independent wiring chambers, with wires connected in each chamber. Alternatively, wiring holes can be designed side-by-side on the same or both sides of the terminal block for connecting wires separately.

[0003] However, both methods require a certain amount of wiring space, making them unsuitable for two-wire direct insertion in confined spaces, and also unable to achieve the effect of unlocking both wires simultaneously with a single press. Therefore, we propose a two-wire direct insertion terminal block to solve these problems. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a two-wire direct-insertion terminal block.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows: A two-wire direct-insertion terminal block includes: The shell has an internal cavity with a positioning post fixed to the inner wall of the cavity; A fluid carrier, with clamping arms symmetrically arranged at both ends of the fluid carrier, the fluid carrier being limited and matched with the positioning post, and a pin extending out of the housing being provided at the bottom of the fluid carrier; The spring includes a cylindrical part and a clamping part. The cylindrical part is sleeved on the positioning post. The cylindrical part has an opening through it along its height direction. The inner walls of the opening have cantilevers extending towards the clamping arm on both sides. The cantilevers are symmetrical about the center of the cylindrical part. The inner end of each cantilever is integrated with the cylindrical part, and the outer end is fixed with the clamping part. The clamping part abuts against the clamping arm. The button has two symmetrical pressure arms at its bottom ends. The two pressure arms can be inserted into the cavity and simultaneously press against the two cantilever arms respectively.

[0006] Furthermore, the top of the housing has symmetrically provided wire inlet holes at both ends, and a button mounting hole is also provided between the two wire inlet holes on the top of the housing. The pressure arm at the bottom of the button passes through the mounting hole to abut against the cantilever.

[0007] Furthermore, the top of the button has a groove to accommodate the crimping tool, each of the crimping arms has a slide corresponding to its insertion direction, and the inner wall of the housing has vertical sliding ribs fixed symmetrically around the cylindrical part, and the slides slide in cooperation with the sliding ribs.

[0008] Furthermore, a limiting rib is fixed to the inner wall of the housing below the positioning post. The limiting rib is inverted V-shaped to limit the cantilever after it is pressed by the pressure arm.

[0009] Furthermore, the fluid carrier is a plate with 90° bends at both ends, and the bends are the connecting arms. The connecting arms are also provided with anti-detachment ribs and anti-slip textures on opposite sides.

[0010] Furthermore, the positioning post has a fan-shaped platform integrally fixed at one end near the inner wall of the housing, and the fluid carrier has a fan-shaped groove at the connection point corresponding to the cylindrical part. The cylindrical part has a mating opening recessed at one end and a mating platform protruding at the other end. The fan-shaped platform is limited and fixed with the mating opening, and the mating platform is limited and fixed with the fan-shaped groove.

[0011] Furthermore, the inner wall of the current-carrying component has a square opening, and a positioning slot is provided at the top of the square opening. The positioning slot structure corresponds to the cylindrical part and the fan-shaped platform structure.

[0012] Furthermore, the number of poles of the terminals is expanded by splicing.

[0013] Furthermore, along the splicing direction, the housing sequentially includes an end shell, a plurality of splicing shells, and a side cover. Each splicing shell has a blind groove at both ends in the corresponding splicing direction, and a locking groove extends outside the blind groove. A locking tenon is formed in each blind groove. Adjacent splicing shells are engaged through the locking groove and the locking tenon. The end shell also has the blind groove to engage with the splicing shell, and the side cover also extends the locking groove to engage with the splicing shell.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention features a compact and reliable structure. A single integrated double-wing spring plate engages with a fluid-carrying connector arm to achieve a reliable connection with the wire. The dual-wire direct insertion increases wiring density and improves wiring efficiency; a single button press releases two wires simultaneously, enhancing wire switching efficiency; and the plastic part's locking mechanism, with its interlocking grooves, is easier to manufacture, requires less precision, and is easier to assemble compared to conventional hole-and-post interference fit structures. It can be widely applied in industrial applications with space constraints and high installation efficiency requirements. Attached Figure Description

[0015] Figure 1 This is an exploded isometric view of the terminal block in this invention; Figure 2 This is a front view of the wiring terminals in this invention; Figure 3 For the present invention Figure 2 Sectional view along line AA; Figure 4 This is a partial structural diagram of the splicing shell in the wiring terminal of the present invention; Figure 5 This is a partial structural diagram of the fluid-carrying element and spring in the terminal block of the present invention.

[0016] In the diagram: 1. Housing; 101. Cavity; 102. Positioning pin; 103. Cable inlet; 104. Button mounting hole; 105. Sliding rib; 106. Limiting rib; 107. Fan-shaped platform; 2. Fluid carrier; 201. Cable clamping arm; 202. Pin; 203. Anti-detachment rib; 204. Anti-slip texture; 205. Fan-shaped groove; 206. Positioning groove hole; 3. Spring; 301. Cylindrical part; 302. Cable clamping part; 303. Opening; 304. Cantilever; 305. Mating port; 306. Mating platform; 4. Button; 401. Pressure arm; 402. Groove; 403. Slide table; 5. End housing; 6. Spliced ​​housing; 7. Side cover; 8. Blind groove; 9. Slot; 10. Tenon. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments.

[0018] like Figures 1-5 As shown, this invention provides a solution for a two-wire direct-insertion terminal block, the specific solution including: The housing 1 has an internal cavity 101, and a positioning post 102 is fixed to the inner wall of the cavity 101; The fluid carrier 2 has wire clamping arms 201 symmetrically arranged at both ends. The fluid carrier 2 is limited and cooperates with the positioning post 102. The bottom of the fluid carrier 2 is provided with a pin 202 that extends out of the housing 1. The spring 3 includes a cylindrical part 301 and a wire clamping part 302. The cylindrical part 301 is sleeved on the positioning post 102. The cylindrical part 301 has an opening 303 through it along its height direction. The inner walls of the opening 303 extend cantilever 304 to the wire clamping arm 201 from both sides. The cantilever 304 is symmetrical about the cylindrical part 301. The inner end of each cantilever 304 is connected to the cylindrical part 301 as a whole, and the outer end is fixed to the wire clamping part 302. The wire clamping part 302 abuts against the wire clamping arm 201. Button 4, with pressure arms 401 symmetrically formed at both ends of the bottom of button 4. The two pressure arms 401 can be inserted into the cavity 101 and simultaneously press against the two cantilever arms 304 respectively.

[0019] Through the above structure, the present invention achieves a reliable connection with the wire by cooperating with the connecting arm of the fluid-carrying device 2 using the integrated double-wing spring 3. The dual-wire direct insertion can improve wiring density and wiring efficiency; the button 4 can release two wires at the same time with one press, which can improve wire changing efficiency. It can be widely used in industrial applications with space requirements and installation efficiency requirements.

[0020] Similarly, this product can be spliced ​​to expand the number of poles. The actual product can be composed of six parts: end shell 5, splicing shell 6, side cover 7, button 4, spring 3, and fluid carrier 2. When in use, the product can achieve a direct connection of two wires. The bottom is connected to the PCB through pin 202. Pressing button 4 once can unlock both wires at the same time.

[0021] The two ends are respectively fastened to the splicing shell 6 by the end shell 5 and the side cover 7. This product can be widely used in application scenarios with dual incoming lines and on-site installation requirements. For the splicing expansion of the number of poles, each splicing shell 6 has two blind grooves 8 on the left and right sides, and each blind groove 8 has a tenon 10 extending from its surface. Each blind groove 8 also extends outward with a slot 9, which engages with the tenon 10 of the other shell during splicing. Similarly, the end shell 5 also has the blind groove 8 to engage with the splicing shell 6, and the side cover 7 also extends with the slot 9 to engage with the splicing shell 6.

[0022] Regarding the wiring structure, such as Figure 1 and Figure 4 As shown, the present invention provides a cavity 101 in the middle area between the end shell 5 and the splicing shell 6, with symmetrically arranged wire inlet holes 103 at the upper end, and a button mounting hole 104 between the two wire inlet holes 103. Two sliding ribs 105 extend from the upper wire inlet holes 103 into the cavity 101, with a positioning post 102 in the middle. A fan-shaped positioning platform is provided at the upper end of the positioning post 102; an inclined limiting rib 106 (inverted V shape) connected at both ends is provided at the lower end of the positioning post 102 to limit the downward displacement of the spring piece 3.

[0023] For button 4, the top of button 4 is provided with a groove 402 structure to accommodate the crimping tool; the spring 3 pressure arm 401 extends downward symmetrically and is provided with a slide 403 symmetrically provided on the pressure arm 401 to slide and cooperate with the sliding rib 105. When the pressure arm 401 is pressed down, it acts on the spring 3 to release the wire.

[0024] For the fluid carrier 2, a square notch is provided on the assembly surface of the fluid carrier 2, and a circular slot is provided at the upper end of the square notch to cooperate with the positioning post 102 and the fan-shaped platform 107; wiring arms are symmetrically arranged at 90° on both sides of the assembly surface, and anti-detachment ribs 203 and anti-slip grooves are provided on the wiring arms respectively to prevent the wires from coming out after the wires are inserted; solder feet are provided extending downward from the assembly surface for connection with the PCB.

[0025] The spring clip 3 is the key design feature of this invention. To enable double-sided wire release with a single press, the spring clip 3 in this invention adopts an integrated double-fold structure with a cylindrical part 301 in the middle. The cylindrical part 301 is fitted onto the positioning post 102 for positioning. The cylindrical part 301 has an opening 303 extending through it along its height direction. The inner walls of the opening 303 extend cantilever 304 to the wire clamping arm 201 on both sides. The cantilever 304 is symmetrical about the cylindrical part 301. The inner end of each cantilever 304 is integrated with the cylindrical part 301, and the outer end is fixed with the wire clamping part 302. The wire clamping part 302 abuts against the wire clamping arm 201. The wire clamping part 302 at the end of the cantilever 304 has a width variation, which can be achieved by welding, riveting, or other methods.

[0026] By extending cantilever 304 on both sides of the bottom opening 303 of the cylindrical part 301, the structural area of ​​the spring piece 3 is further reduced. Similarly, to reduce assembly size, the cylindrical part 301 has a recessed mating port 305 at one end along its height and a protruding mating platform 306 at the other end. The positioning post 102 has a fan-shaped platform 107 integrally fixed at one end near the inner wall of the housing 1. The fluid carrier 2 also has a fan-shaped groove 205 at the connection point corresponding to the cylindrical part 301. The fan-shaped platform 107 is limited and fixed with the mating port 305, and the mating platform 306 is limited and fixed with the fan-shaped groove 205. The double-sided embedding method is stable and reliable, and also reduces the additional space required for assembly.

[0027] In summary, the purpose of this invention is to provide a terminal block solution that enables dual-wire direct insertion within a confined space. Dual-wire direct insertion improves wiring density and saves operation time. The splicing method of the slot 9 and tenon 10 reduces assembly difficulty and the precision requirements for plastic parts manufacturing compared to conventional hole-and-post mating structures. A single press of button 4 releases two wires simultaneously, improving wire replacement efficiency. By adjusting the plastic raw materials, the same structure can accommodate both wave soldering and reflow soldering installation methods.

[0028] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A two-wire direct-insertion terminal block, characterized in that, include: The shell has an internal cavity with a positioning post fixed to the inner wall of the cavity. The fluid carrier has wire clamping arms symmetrically arranged at both ends, the fluid carrier is limited and matched with the positioning post, and the bottom of the fluid carrier has pins that protrude from the housing; The spring includes a cylindrical part and a clamping part. The cylindrical part is sleeved on the positioning post. The cylindrical part has an opening through it along its height direction. The inner walls of the opening have cantilevers extending towards the clamping arm on both sides. The cantilevers are symmetrical about the center of the cylindrical part. The inner end of each cantilever is integrated with the cylindrical part, and the outer end is fixed with the clamping part. The clamping part abuts against the clamping arm. The button has two symmetrical pressure arms at its bottom ends. The two pressure arms can be inserted into the cavity and simultaneously press against the two cantilever arms respectively.

2. The double-wire direct-insertion terminal block according to claim 1, characterized in that: The top of the housing has symmetrically arranged wire inlet holes at both ends. A button mounting hole is also provided between the two wire inlet holes on the top of the housing. The pressure arm at the bottom of the button passes through the mounting hole to abut against the cantilever.

3. A two-wire direct-insertion terminal block according to claim 2, characterized in that: The button has a groove on its top to accommodate the crimping tool. Each of the crimping arms has a slide corresponding to its insertion direction. The inner wall of the housing has vertical sliding ribs fixed symmetrically around the cylindrical part. The slides and the sliding ribs slide in cooperation.

4. A two-wire direct-insertion terminal block according to claim 3, characterized in that: The inner wall of the housing is also fixed with a limiting rib below the positioning post. The limiting rib is inverted V-shaped to limit the cantilever after it is pressed by the pressure arm.

5. A two-wire direct-insertion terminal block according to claim 1, characterized in that: The fluid carrier is a plate with 90° bends at both ends. The bends are the connecting arms. The connecting arms are also provided with anti-detachment ribs and anti-slip textures on opposite sides.

6. A two-wire direct-insertion terminal block according to claim 5, characterized in that: The positioning post has a fan-shaped platform integrally fixed at one end near the inner wall of the housing. The fluid carrier also has a fan-shaped groove at the connection point corresponding to the cylindrical part. The cylindrical part has a mating opening recessed at one end and a mating platform protruding at the other end. The fan-shaped platform is limited and fixed with the mating opening, and the mating platform is limited and fixed with the fan-shaped groove.

7. A two-wire direct-insertion terminal block according to claim 6, characterized in that: The inner wall of the current-carrying component has a square opening, and a positioning slot is provided at the top of the square opening. The positioning slot structure corresponds to the cylindrical part and the fan-shaped platform structure.

8. A two-wire direct-insertion terminal block according to any one of claims 1-7, characterized in that: The number of poles is expanded by splicing the terminals.

9. A two-wire direct-insertion terminal block according to claim 8, characterized in that: Along the splicing direction, the housing sequentially includes an end shell, multiple splicing shells, and a side cover. Each splicing shell has a blind groove at both ends in the corresponding splicing direction, and a locking groove extends outside the blind groove. A locking tenon is formed in each blind groove. Adjacent splicing shells are engaged through the locking groove and the locking tenon. The end shell also has the blind groove to engage with the splicing shell, and the side cover also has the locking groove to engage with the splicing shell.

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