A wireless connection terminal

Abstract

The application relates to a wireless connection terminal and relates to the technical field of explosion-proof lamp mounting, and aims to solve the problem that after the edge terminal plate and the center terminal plate are deformed, the bolt tile combination pressure wire clamp is difficult to push the wire to be clamped with the edge terminal plate and the center terminal plate, thereby easily leading to poor contact of the explosion-proof lamp wire. The application comprises an upper terminal disc, a mounting plate is connected to the upper terminal disc, a wire inlet opening for inserting a wire is formed in the mounting plate; a pull rod connected with a terminal plate is arranged in the wire inlet opening, a limit head is rotationally connected to the side wall of the pull rod, a spring for pushing the limit head to rotate is connected between the limit head and the side wall of the pull rod; the end of the limit head is in abutment with the outer side wall of the mounting plate, a cooperation block for clamping the wire in cooperation with the terminal plate is further arranged in the wire inlet opening, and a through hole for the pull rod and the limit head to pass through is formed in the cooperation block and the mounting plate. The application has the effect of reducing poor contact of the explosion-proof lamp wire.

Description

Technical Field

[0001] This application relates to the field of explosion-proof light installation technology, and in particular to a wireless connection terminal. Background Technology

[0002] Explosion-proof lamps are lamps used in hazardous locations where flammable gases and dust exist. They are designed to prevent electric arcs, sparks, and high temperatures generated inside the lamp from igniting flammable gases and dust in the surrounding environment, thereby meeting explosion-proof requirements.

[0003] The relevant patent with authorization announcement number CN209042273U provides a split-wire wireless connection terminal block, including a wiring sleeve, an upper part, and a lower part. The upper and lower parts are all connected inside the wiring sleeve, and the lower part is also connected to the power supply cavity of the lamp body. The upper part includes a bolt and washer combination clamp, a terminal block, a conductive connecting piece, an edge terminal plate and a center terminal plate, a contact and a contact compression spring. The contact is in contact with the lower part. The terminal block has an opening for guiding insertion. The upper ends of the edge terminal plate and the center terminal plate extend from the corresponding openings, and one end of the bolt and washer combination clamp is located inside the opening. When connecting the wire, the wire end is inserted into the corresponding opening, and then the bolt and washer combination clamp is operated to press the wire onto the edge terminal plate and the center terminal plate, thereby realizing the wireless connection between the wire and the lamp body.

[0004] Regarding the aforementioned patents, the bolt-waist combination clamp presses the wires onto the edge terminal plate and the center terminal plate. The edge terminal plate and the center terminal plate deform away from the bolt-waist combination clamp. Although the edge terminal plate and the center terminal plate have a certain degree of elasticity, after prolonged use, the deformation of the edge terminal plate and the center terminal plate is difficult to return to its original state. This results in a large gap between the edge terminal plate and the center terminal plate and the corresponding bolt-waist combination clamp. Since the travel of the bolt on the bolt-waist combination clamp is limited, after the edge terminal plate and the center terminal plate deform, the bolt-waist combination clamp cannot push the wires to clamp tightly against the edge terminal plate and the center terminal plate, which can easily lead to poor contact of the explosion-proof lamp wires. Summary of the Invention

[0005] To reduce poor wire contact in explosion-proof lights, this application provides a wireless connection terminal.

[0006] The wireless connection terminal provided in this application adopts the following technical solution:

[0007] A wireless connection terminal includes an upper terminal block, a mounting plate connected to the top wall of the upper terminal block, and an inlet for inserting a wire on the mounting plate. A pull rod connected to the terminal block is disposed in the inlet, and a limit head is rotatably connected to the side wall of the pull rod. A spring that pushes the limit head to rotate is connected between the limit head and the side wall of the pull rod. The end of the limit head abuts against the outer wall of the mounting plate. A mating block for clamping the wire with the terminal block is also disposed in the inlet. Both the mating block and the mounting plate have through holes for the pull rod and the limit head to pass through.

[0008] By adopting the above technical solution, when connecting the wire, the wire is inserted into the inlet, and the wire is simultaneously located between the terminal plate and the mating block. Pulling the pull rod causes the terminal plate to bend, causing the part of the terminal plate extending into the inlet to move closer to the mating block. At this time, the part of the pull rod connected to the limiting head is located in the through hole. As the pull rod moves further, the terminal plate will move to clamp the wire between the terminal plate and the mating block. At the same time, as the pull rod moves, the part of the pull rod connected to the limiting head moves out of the through hole. At this time, the spring force pushes the limiting head to rotate away from the pull rod and abut against the outer wall of the mounting plate. At this time, the pulling force on the pull rod is removed, and the outer wall of the mounting plate will limit the limiting head, thereby limiting the position of the pull rod on the mounting plate, which in turn limits the relative position of the terminal plate and the mating block, thus ensuring that the wire is stably clamped between the terminal plate and the mating block, realizing the connection of the wire. The pull rod, along with the limit head and spring, ensures that the terminal block always clamps the wires to the mating block, preventing the wire connection from being affected by the deformation of the terminal block. The pull rod can always pull the terminal block to abut against the mating block, thereby reducing the possibility of poor wire contact in explosion-proof lights.

[0009] Preferably, the pull rod has a receiving groove on its side wall, and the limiting head is rotatably connected in the receiving groove; the receiving groove has a mounting hole on its bottom wall, and the spring is located in the mounting hole.

[0010] By adopting the above technical solution, the receiving groove and mounting hole provide a receiving space for the limiting head and the spring, allowing the limiting head and the spring to be hidden inside the pull rod and not protrude from the side wall of the pull rod. This reduces the opening diameter of the through hole, allowing the pull rod to be stably attached to the inner wall of the through hole, preventing the pull rod from shaking when moving and improving the stability of the pull rod movement.

[0011] Preferably, the inner diameter of the mounting hole is larger than the diameter of the spring.

[0012] When the spring rotates with the limit head, it tilts and comes into contact with the inner wall of the mounting hole. As the limit head rotates, the spring bends at the contact point with the inner wall of the mounting hole. After prolonged use, the spring bends and is difficult to return to its original position, making it difficult to retract into the mounting hole. By adopting the above technical solution, the inner diameter of the mounting hole is larger than the diameter of the spring, so the spring will not come into contact with the inner wall of the mounting hole when it tilts, reducing the possibility of the spring bending and deforming and being difficult to retract into the mounting hole.

[0013] Preferably, the pull rod includes a first branch rod and a second branch rod, with an elastic element connecting the first branch rod and the second branch rod. The first branch rod is used to connect with the terminal plate, and the limiting head and the receiving groove are both provided on the second branch rod.

[0014] By adopting the above technical solution, when the first branch rod is pulled, the connecting rod will pull the elastic element, thereby pulling the second branch rod. After the terminal plate clamps the wire, the movement of the first branch rod will stretch the elastic element. After the limiting head limits the first branch rod, the elastic force on the elastic element will pull the second branch rod, causing the second branch rod to further drive the terminal plate to clamp the wire, thereby improving the connection stability of the wire.

[0015] Preferably, the diameter of the first branch rod is larger than that of the second branch rod, the end wall of the first branch rod has an insertion hole, the second branch rod is inserted into the insertion hole, and the elastic element is connected between the end wall of the second branch rod and the bottom wall of the insertion hole.

[0016] By adopting the above technical solution, the opening of the socket allows the elastic element to be hidden inside the socket, reducing the exposure of the elastic element and reducing the contact and influence of foreign objects on the elastic element; moreover, the opening of the socket can reduce the overall length of the first branch rod and the second branch rod, reducing the space occupied by the first branch rod and the second branch rod.

[0017] Preferably, the insertion hole is opened through the first branch rod along the axial direction, and a connecting rod is threaded into the insertion hole. One end of the elastic element is connected to the end wall of the connecting rod.

[0018] By adopting the above technical solution, when the elastic element needs to be replaced, it can first be removed from the second branch rod, then the connecting rod can be screwed to move it out of the socket, thus moving the elastic element out of the socket. Finally, the elastic element can be removed from the connecting rod to replace it with a new one. The connecting rod design improves the ease of replacing the elastic element.

[0019] Preferably, the top wall of the upper terminal block is provided with a clearance opening for the terminal block to move and make room.

[0020] By adopting the above technical solution, when the terminal plate and the mating block clamp the wire, the terminal plate will bend. The clearance opening can make way for the bending deformation of the terminal plate, reducing the contact between the terminal plate and the upper terminal plate at the protruding position of the terminal plate, thus reducing the possibility of bending damage.

[0021] Preferably, a limiting rope is connected between the limiting head and the bottom wall of the receiving groove, and the limiting rope is located inside the spring.

[0022] By adopting the above technical solution, the limiting head stops rotating after the limiting rope is straightened. The limiting rope can limit the rotation of the limiting head, reducing the possibility of irreversible deformation caused by excessive stretching of the spring due to excessive rotation of the limiting head.

[0023] Preferably, a sliding sleeve is slidably connected to the pull rod, and the sliding sleeve is located on the side of the limiting head away from the spring.

[0024] By adopting the above technical solution, when the wire needs to be removed from the upper terminal block, the sliding sleeve moves towards the limiting head. Due to the inclined setting of the limiting head, the sliding sleeve will push the limiting head to rotate and insert into the receiving groove under the guidance of the side wall of the limiting head when it moves. At this time, the limiting on the first branch rod is removed, and the elasticity of the terminal plate itself will cause the terminal plate to reset. At the same time, it will drive the second branch rod to pull the first branch rod, so that the part of the first branch rod connected to the limiting head is inserted into the through hole, and the wire can be removed from the middle of the terminal plate and the mating block. This reduces the need for operators to manually press the limiting head.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The design of the pull rod, along with the cooperation of the limit head and the spring, ensures that the terminal plate can always clamp the wire with the mating block, so that the wire connection is not affected by the deformation of the terminal plate. The pull rod can always pull the terminal plate to press against the mating block, thereby reducing the possibility of poor wire contact in the explosion-proof lamp.

[0027] 2. The opening of the receiving groove and mounting hole allows the tie rod to be stably attached to the inner wall of the through hole, preventing the tie rod from shaking when moving and improving the stability of the tie rod movement.

[0028] 3. The inclusion of elastic elements can improve the connection stability of the wires. Attached Figure Description

[0029] Figure 1 This is a cross-sectional schematic diagram of a wireless connection terminal in an embodiment of this application.

[0030] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0031] Explanation of reference numerals in the attached drawings: 1. Upper terminal block; 11. Terminal plate; 12. Relief port; 2. Mounting plate; 21. Cable inlet; 22. Mating block; 23. Through hole; 3. Pull rod; 31. First branch rod; 311. Insertion hole; 32. Second branch rod; 33. Elastic element; 34. Limiting head; 35. Spring; 36. Limiting rope; 37. Receiving groove; 38. Mounting hole; 39. Sliding sleeve. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0033] This application discloses a wireless connection terminal. (Refer to...) Figure 1 The wireless connection terminal includes an upper terminal plate 1. A mounting plate 2 is bolted to the top wall of the upper terminal plate 1. An inlet 21 is provided on the mounting plate 2. A terminal plate 11 inside the upper terminal plate 1 passes through the upper terminal plate 1 and extends out of the upper terminal plate 1. The terminal plate 11 inside the upper terminal plate 1 also extends into the inlet 21. A clearance opening 12 is provided on the upper terminal plate 1 near the terminal plate 11. A mating block 22 is provided inside the inlet. The mating block 22 is made of insulating material and is connected to the inner wall of the inlet 21 by screws.

[0034] Reference Figure 1 A pull rod 3 is provided inside the inlet 21. The pull rod 3 includes a first branch rod 31 and a second branch rod 32. A through hole 23 is provided on the mounting plate 2 and the mating block 22. One end of the first branch rod 31 passes through the through hole 23 and extends out from the outer wall of the mounting plate 2. The second branch rod 32 is fixedly connected to the terminal plate 11. An insertion hole 311 is provided on the end wall of the first branch rod 31. The second branch rod 32 is inserted into the insertion hole 311 and connected to the first branch rod 31.

[0035] Reference Figure 1 and Figure 2 The first branch rod 31 has a receiving groove 37 on its side wall, and a mounting hole 38 on its bottom wall. A limit head 34 is rotatably connected to the inner side wall of the receiving groove 37. A spring 35 is welded to the bottom wall of the mounting hole 38. The end of the spring 35 near the limit head 34 is welded to the side wall of the limit head 34. A limit rope 36 is also fixedly connected between the bottom wall of the mounting hole 38 and the side wall of the limit head 34. The limit rope 36 is located inside the spring 35.

[0036] When connecting the wire, insert the wire into the inlet 21, with the wire simultaneously positioned between the terminal plate 11 and the mating block 22. Pulling the first branch rod 31 moves the second branch rod 32, causing the terminal plate 11 to bend. This causes the portion of the terminal plate 11 extending into the inlet 21 to move closer to the mating block 22. At this time, the portion of the first branch rod 31 connected to the limiting head 34 is located within the through hole 23. As the first branch rod 31 moves further, the terminal plate 11 moves, clamping the wire between the terminal plate 11 and the mating block 22. Simultaneously, with the movement of the first branch rod 31, the first branch rod... The part of rod 31 connected to the limiting head 34 moves out of the through hole 23. At this time, the spring 35 pushes the limiting head 34 out of the receiving groove 37 and abuts against the outer wall of the mounting plate 2. The limiting head 34 rotates until the limiting rope 36 is straight and then stops rotating. At this time, the tension on the first branch rod 31 is removed, and the outer wall of the mounting plate 2 will limit the limiting head 34, thereby limiting the position of the first branch rod 31 on the mounting plate 2. This limits the relative position of the terminal plate 11 and the mating block 22, thereby making the wire stably clamped between the terminal plate 11 and the mating block 22, realizing the connection of the wire.

[0037] Reference Figure 1 and Figure 2 The insertion hole 311 is opened through the first branch rod 31 axially. A connecting rod is internally threaded into the insertion hole 311. An elastic element 33 is welded between the connecting rod and the second branch rod 32. The elastic element 33 can be a spring 35. When the first branch rod 31 is pulled, the connecting rod will pull the elastic element 33, thereby pulling the second branch rod 32. After the terminal plate clamps the wire, the movement of the first branch rod 31 will stretch the elastic element 33. After the limiting head 34 limits the first branch rod 31, the elastic force on the elastic element 33 will pull the second branch rod 32, causing the second branch rod 32 to further drive the terminal plate 11 to clamp the wire, thereby improving the connection stability of the wire.

[0038] Reference Figure 1 and Figure 2 A sliding sleeve 39 is slidably connected to the first branch rod 31. The sliding sleeve 39 is located on the side of the limiting head 34 away from the spring 35. When the wire needs to be removed from the upper terminal plate 1, the sliding sleeve 39 is moved towards the limiting head 34. Since the limiting head 34 is tilted, the sliding sleeve 39 will push the limiting head 34 to rotate and insert into the receiving groove 37 under the guidance of the side wall of the limiting head 34 when it moves. At this time, the limiting on the first branch rod 31 is removed, and the elastic force of the terminal plate 11 will cause the terminal plate 11 to reset. At the same time, the second branch rod 32 will pull the first branch rod 31, so that the part of the first branch rod 31 connected to the limiting head 34 is inserted into the through hole 23, and the wire can be removed from the middle of the terminal plate 11 and the mating block 22.

[0039] The implementation principle of a wireless connection terminal in this application embodiment is as follows:

[0040] When connecting the wire, insert the wire into the inlet 21, with the wire simultaneously positioned between the terminal plate 11 and the mating block 22. Pulling the first branch rod 31 moves the second branch rod 32, causing the terminal plate 11 to bend. This causes the portion of the terminal plate 11 extending into the inlet 21 to move closer to the mating block 22. At this time, the portion of the first branch rod 31 connected to the limiting head 34 is located within the through hole 23. As the first branch rod 31 moves further, the terminal plate 11 moves, clamping the wire between the terminal plate 11 and the mating block 22. Simultaneously, with the movement of the first branch rod 31, the first branch rod... The portion of rod 31 connected to the limiting head 34 moves out of the through hole 23. At this time, the spring 35 pushes the limiting head 34 out of the receiving groove 37 and abuts against the outer wall of the mounting plate 2. The limiting head 34 rotates until the limiting rope 36 is straight and then stops rotating. At this time, the tension on the first branch rod 31 is released, and the outer wall of the mounting plate 2 will limit the limiting head 34, thereby limiting the position of the first branch rod 31 on the mounting plate 2. This limits the relative position of the terminal plate 11 and the mating block 22, thus ensuring that the wire is stably clamped between the terminal plate 11 and the mating block 22, achieving the connection of the wire. The setting of the pull rod 3, and the cooperation of the limiting head 34 and the spring 35, ensure that the terminal plate 11 can always cooperate with the mating block 22 to clamp the wire, so that the connection of the wire is not affected by the deformation of the terminal plate 11. The pull rod 3 can always pull the terminal plate 11 and the mating block 22 to abut against each other, thereby reducing the possibility of poor wire contact in the explosion-proof lamp.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wireless connection terminal, comprising an upper terminal block (1), characterized in that: The top wall of the upper terminal block (1) is connected to a mounting plate (2), and the mounting plate (2) is provided with an inlet (21) for inserting wires; a pull rod (3) connected to the terminal plate (11) is provided in the inlet (21), and a limit head (34) is rotatably connected to the side wall of the pull rod (3). A spring (35) for pushing the limit head (34) to rotate is connected between the limit head (34) and the side wall of the pull rod (3); the end of the limit head (34) abuts against the outer side wall of the mounting plate (2), and a mating block (22) for clamping the wires with the terminal plate (11) is also provided in the inlet (21). Both the mating block (22) and the mounting plate (2) are provided with through holes (23) for the pull rod (3) and the limit head (34) to pass through. The pull rod (3) has a receiving groove (37) on its side wall, and the limiting head (34) is rotatably connected in the receiving groove (37); the receiving groove (37) has a mounting hole (38) on its bottom wall, and the spring (35) is located in the mounting hole (38); The pull rod (3) includes a first branch rod (31) and a second branch rod (32). An elastic element (33) is connected between the first branch rod (31) and the second branch rod (32). The first branch rod (31) is used to connect with the terminal plate (11). The limiting head (34) and the receiving groove (37) are both provided on the second branch rod (32). A sliding sleeve (39) is slidably connected to the pull rod (3), and the sliding sleeve (39) is located on the side of the limiting head (34) away from the spring (35); so that when the sliding sleeve (39) moves toward the limiting head (34), the sliding sleeve (39) can push the limiting head (34) to rotate and insert into the receiving groove (37) during the movement, so that the terminal plate (11) resets under its own elastic force, and drives the second branch rod (32) to pull the first branch rod (31), so that the part of the first branch rod (31) connected to the limiting head (34) is inserted into the through hole (23), and the wire is taken out from between the terminal plate (11) and the mating block (22).

2. The wireless connection terminal according to claim 1, characterized in that: The inner diameter of the mounting hole (38) is larger than the diameter of the spring (35).

3. The wireless connection terminal according to claim 1, characterized in that: The diameter of the first branch rod (31) is larger than that of the second branch rod (32). The end wall of the first branch rod (31) is provided with a insertion hole (311). The second branch rod (32) is inserted into the insertion hole (311). The elastic element (33) is connected between the end wall of the second branch rod (32) and the bottom wall of the insertion hole (311).

4. A wireless connection terminal according to claim 3, characterized in that: The insertion hole (311) is opened through the first branch rod (31) along the axial direction. A connecting rod is threaded into the insertion hole (311), and one end of the elastic element (33) is connected to the end wall of the connecting rod.

5. A wireless connection terminal according to claim 1, characterized in that: The top wall of the upper terminal block (1) is provided with a clearance opening (12) for moving and making way for the terminal plate (11).

6. A wireless connection terminal according to claim 1, characterized in that: A limiting rope (36) is connected between the limiting head (34) and the bottom wall of the receiving groove (37), and the limiting rope (36) is located inside the spring (35).

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