Terminal block

Abstract

This disclosure provides a terminal block including an insulating body, a conductor, a conductive spring, and a limiting cover. A mating chamber is formed within the insulating body, and the surface of the insulating body has a socket communicating with the mating chamber. The mating chamber has an installation opening. The conductor is embedded in the insulating body and has a conductive end that passes through the mating chamber and is positioned on one side of the socket's axial direction. The conductive spring is disposed within the mating chamber and has a fixed end and a spring arm extending from the fixed end. The fixed end is fixed within the mating chamber and positioned on the other side of the socket's axial direction relative to the conductor's conductive end. The spring arm is movably disposed within the mating chamber and crosses the socket, pressing against the conductor's conductive end. The limiting cover is detachably disposed on the insulating body, covering at least a portion of the installation opening and limiting the conductive spring.

Description

Terminal block Technical Field

[0001] This disclosure relates to terminal blocks, and in particular to a terminal block that is easy to assemble. Prior Technology

[0002] Terminal blocks are widely used in various power or electronic devices to provide quick and secure electrical connections for wires. A typical terminal block usually consists of an insulating body, a conductor housed within it, and a pair of spring clips. After the pair of conductive wires are inserted into the insulating body, they are clamped to the conductor by the spring clips, thus achieving an electrical connection. During the manufacturing process, the conductive spring clips must be installed inside the insulating body. To ensure that the spring clips do not easily detach from the insulating body during subsequent wire insertion, removal, or external vibration, traditional designs typically incorporate barbs, stops, or other restrictive structures at the opening for inserting the spring clips. However, due to the limited installation opening, a significant pressure must be applied to the conductive spring clips during assembly to compress them considerably, leading to assembly difficulties and potentially causing irreversible plastic deformation, rendering the conductive spring clips unable to provide the intended clamping force.

[0003] In view of this, the creator has devoted himself to studying the aforementioned existing technologies and applying theoretical principles to try his best to solve the problems mentioned above, which has become the creator's goal for improvement. Summary of the Invention

[0004] This disclosure relates to a terminal block that is easy to assemble.

[0005] This disclosure provides a terminal block including an insulating body, a conductor, a conductive spring, and a limiting cover. A mating chamber is formed within the insulating body, and the surface of the insulating body has a socket communicating with the mating chamber. The mating chamber has an installation opening. The conductor is embedded in the insulating body and has a conductive end that passes through the mating chamber and is positioned on one side of the socket's axial direction. The conductive spring is disposed within the mating chamber and has a fixed end and a spring arm extending from the fixed end. The fixed end is fixed within the mating chamber and positioned on the other side of the socket's axial direction relative to the conductor's conductive end. The spring arm is movably disposed within the mating chamber and crosses the socket, pressing against the conductor's conductive end. The limiting cover is detachably disposed on the insulating body, covering at least a portion of the installation opening and limiting the conductive spring.

[0006] In one embodiment of this disclosure, the limiting cover covers the spring arm of the conductive spring, and the fixed end of the conductive spring is exposed in the mounting opening.

[0007] In one embodiment of this disclosure, the limiting cover covers the fixed end of the conductive spring, and the spring arm of the conductive spring is exposed in the mounting opening.

[0008] In one embodiment of this disclosure, the limiting cover closes the mounting opening.

[0009] In one embodiment of this disclosure, the surface of the insulating body is provided with a groove that communicates with the docking chamber, the spring arm is configured corresponding to the groove, and an operating pin is inserted in the groove. The operating pin can move into the docking chamber to push the spring arm away from the conductor.

[0010] In one embodiment of this disclosure, the limiting cover has a guide edge parallel to the axial direction of the insertion hole, and a guide tenon protrudes from one side of the operating pin, the guide tenon abutting against the guide edge and being able to slide along the guide edge.

[0011] In one embodiment of this disclosure, the main body is provided with a locking hole, the limiting cover has a locking pin, and the locking pin is tightly inserted into the locking hole.

[0012] In one embodiment of this disclosure, a protrusion is provided on the side wall of the locking pin to press against the locking hole.

[0013] In one embodiment of this disclosure, the main body is provided with a stop hole, which is disposed on one side of the locking hole, and the limiting cover has a stop pin, which is inserted into the stop hole.

[0014] In one embodiment of this disclosure, a stop pin is loosely inserted into a stop hole.

[0015] In one embodiment of this disclosure, a stop pin is forcibly inserted into a stop hole.

[0016] In one embodiment of this disclosure, a protrusion is provided on the side wall of the stop pin to press against the stop hole.

[0017] The terminal block disclosed herein has its conductive springs installed inside the mating chamber, and then a limiting cover is subsequently installed on the insulating body to prevent the conductive springs from falling off. Therefore, the mating chamber can be pre-designed with a larger installation opening to facilitate assembly and avoid the need for excessive compression of the conductive springs during installation, which would cause installation difficulties. Simple Explanation of the Diagram

[0018] Figure 1 is an exploded perspective view of the terminal block of the first embodiment disclosed herein.

[0019] Figure 2 is a perspective view of the terminal block of the first embodiment disclosed herein.

[0020] Figure 3 is a schematic diagram of the operation of the operating pin of the terminal block of the first embodiment disclosed herein.

[0021] Figure 4 is a partial perspective exploded view of the terminal block of the first embodiment disclosed herein.

[0022] Figure 5 is a cross-sectional view of one of the terminal blocks of the first embodiment disclosed herein.

[0023] Figure 6 is another cross-sectional view of the terminal block of the first embodiment disclosed herein.

[0024] Figure 7 is a schematic diagram of one of the wiring operations of the terminal block of the first embodiment disclosed herein.

[0025] Figure 8 is another schematic diagram of the wiring operation of the terminal block of the first embodiment disclosed herein.

[0026] Figure 9 is a perspective view of the terminal block of the second embodiment disclosed herein.

[0027] Figure 10 is a schematic diagram of the operation of the operating pin of the terminal block according to the second embodiment of the present disclosure.

[0028] Figure 11 is a partial perspective exploded view of the terminal block of the second embodiment disclosed herein.

[0029] Figure 12 is a cross-sectional view of one of the terminal blocks of the second embodiment disclosed herein.

[0030] Figure 13 is a schematic diagram of one of the wiring operations of the terminal block of the second embodiment disclosed herein.

[0031] Figure 14 is a perspective view of the terminal block of the third embodiment disclosed herein.

[0032] Figure 15 is a schematic diagram of the operation of the operating pin of the terminal block according to the third embodiment of this disclosure.

[0033] Figure 16 is a partial perspective exploded view of the terminal block of the third embodiment disclosed herein.

[0034] Figure 17 is a cross-sectional view of one of the terminal blocks of the third embodiment disclosed herein.

[0035] Figure 18 is a schematic diagram of one of the wiring operations of the terminal block of the third embodiment disclosed herein. Implementation

[0036] In the description of this disclosure, it should be understood that the terms "front," "rear," "left," "right," "front end," "rear end," "end," "longitudinal," "lateral," "vertical," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting conditions of this disclosure.

[0037] Unless otherwise defined, terms such as "substantially" and "approximately" are used to describe and narrate small changes. When used in the context of an event or situation, these terms may include the exact moment the event or situation occurred, or an approximate point in time. For example, when used in the context of a numerical value, these terms may include a range of variation less than or equal to ±10% of that value, such as less than or equal to ±5%, less than or equal to ±4%, less than or equal to ±3%, less than or equal to ±2%, less than or equal to ±1%, less than or equal to ±0.5%, less than or equal to ±0.1%, or less than or equal to ±0.05%.

[0038] The detailed description and technical content of this disclosure will be explained in conjunction with the following drawings. However, the accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure.

[0039] Figure 1 is an exploded perspective view of the terminal block according to the first embodiment of the present disclosure. Figure 2 is a perspective view of the terminal block according to the first embodiment of the present disclosure. Referring to Figures 1 and 2, the first embodiment of the present disclosure provides a terminal block for mating a pair of conductive wires 10. Specifically, this terminal block includes an insulating body 100, a conductor 200, and a pair of conductive springs 300. The conductive springs 300 are embedded in the insulating body 100. Specifically, in this embodiment, the conductor 200 has a conductive end 210 corresponding to each mating chamber 101. Each conductive end 210 is inserted into the corresponding mating chamber 101. The pair of conductive springs 300 are respectively disposed on the insulating body 100 corresponding to the two conductive ends 210 of the conductor 200 to clamp each conductive wire 10 to the conductor 200, thereby electrically connecting the pair of conductive wires 10 through the conductor 200. Specifically, the insulating body 100 of this embodiment has a pair of mating chambers 101 respectively disposed on two sides of the insulating body 100. A socket 102 is provided on one side edge of the insulating body 100 corresponding to the aforementioned mating chambers 101, and each socket 102 is connected to the corresponding mating chamber 101. The mounting openings 111 of the pair of mating chambers 101 are disposed on the same surface of the terminal block.

[0040] This disclosure relates to the arrangement of the conductive spring 300 and its mating structure and components on the insulating body 100. Since the aforementioned two conductive springs 300 and their mating structures and components on the insulating body 100 are mirror-mounted and have the same function, the following description will only use one of the conductive springs 300 and its mating structure and components on the insulating body 100 as an example.

[0041] In this embodiment, the insulating body 100 is a flat plastic block, and a docking chamber 101 is formed therein. The surface of the insulating body 100 is provided with an insertion hole 102 communicating with the docking chamber 101, and the docking chamber 101 has an installation opening 111 for installing the conductive spring 300 into the docking chamber 101.

[0042] The conductor 200 is embedded in the insulating body 100. The conductor 200 has a conductive end 210, which passes through the docking chamber 101 and is positioned on one side of the axial direction of the socket 102.

[0043] Figure 3 is a schematic diagram of the operation of the terminal block and its operating pin according to the first embodiment of the present disclosure. Referring to Figure 3, a conductive spring 300 is disposed within the docking chamber 101. The conductive spring 300 has a fixed end 320 and a spring arm 310 extending from the fixed end 320. The fixed end 320 is fixed within the docking chamber 101 and is disposed on the other side of the axial direction of the socket 102 relative to the conductive end 210 of the conductor 200. The spring arm 310 is movably disposed in the docking chamber 101 and crosses the socket 102 to press against the conductive end 210 of the conductor 200.

[0044] Figure 4 is a partial exploded perspective view of the terminal block according to the first embodiment of the present disclosure. Figure 5 is a cross-sectional view of one of the terminal blocks according to the first embodiment of the present disclosure. Referring to Figures 4 and 5, a limiting cover 400 is provided in each mating chamber 101, and only one of them will be described as an example below. The limiting cover 400 is detachably disposed on the insulating body 100 to cover at least a portion of the mounting opening 111 and to restrict the conductive spring 300. In this embodiment, the limiting cover 400 covers a portion of the mounting opening 111. Specifically, the limiting cover 400 covers the spring arm 310 of the conductive spring 300 and the fixed end 320 of the conductive spring 300 is exposed in the mounting opening 111, thereby preventing the conductive spring 300 from falling off the mating chamber 101 due to the movement of the spring arm 310. In this embodiment, the main body 100 is provided with a locking hole 141, and the limiting cover 400 has a locking pin 410. The locking pin 410 is tightly inserted into the locking hole 141 to fix the limiting cover 400 to the main body 100. Specifically, a protrusion 411 is provided on the side wall of the locking pin 410 to tighten the locking hole 141. In this embodiment, the main body 100 is provided with a stop hole 142, which is disposed on one side of the locking hole 141. The limiting cover 400 has a stop pin 420, which is inserted into the stop hole 142 to prevent the limiting cover 400 from rotating around the locking pin 410. Specifically, the stop pin 420 is loosely inserted into the stop hole 142 for easy installation.

[0045] Figure 6 is another cross-sectional view of the terminal block of the first embodiment of the present disclosure. Figure 7 is a schematic diagram of one wiring operation of the terminal block of the first embodiment of the present disclosure. Figure 8 is another schematic diagram of the wiring operation of the terminal block of the first embodiment of the present disclosure. Referring to Figures 6 to 8, a sliding groove 105 is provided on the surface of the insulating body 100 corresponding to each docking chamber 101. In this embodiment, only one of the sliding grooves 105 is described as an example. The sliding groove 105 connects to the corresponding docking chamber 101. The spring arm 310 of the conductive spring 300 is configured corresponding to the sliding groove 105. An operating pin 500 is inserted into the sliding groove 105. The operating pin 500 can move into the docking chamber 101 to push the spring arm 310 away from the conductor 200, so as to facilitate the insertion or withdrawal of the conductive wire 10 between the spring arm 310 and the conductive end 210 of the conductor 200. The wiring operation can be further referred to Figures 7 and 8.

[0046] Figure 9 is a perspective view of a terminal block according to the second embodiment of this disclosure. Referring to Figure 9, the second embodiment of this disclosure provides a terminal block for mating a pair of conductive wires 10. Specifically, this terminal block includes an insulating body 100, a conductor 200, and a pair of conductive springs 300. The conductive springs 300 are embedded in the insulating body 100. Specifically, in this embodiment, the conductor 200 has a conductive end 210 corresponding to each mating chamber 101. Each conductive end 210 passes through the corresponding mating chamber 101. The pair of conductive springs 300 are respectively disposed on the insulating body 100 corresponding to the two conductive ends 210 of the conductor 200 to clamp each conductive wire 10 to the conductor 200, thereby electrically connecting the pair of conductive wires 10 through the conductor 200. Specifically, the insulating body 100 of this embodiment has a pair of mating chambers 101 respectively disposed on two sides of the insulating body 100. A socket 102 is provided on one side edge of the insulating body 100 corresponding to the aforementioned mating chambers 101, and each socket 102 is connected to the corresponding mating chamber 101. The mounting openings 111 of the pair of mating chambers 101 are disposed on the same surface of the terminal block.

[0047] This disclosure relates to the arrangement of the conductive spring 300 and its mating structure and components on the insulating body 100. Since the aforementioned two conductive springs 300 and their mating structures and components on the insulating body 100 are mirror-mounted and have the same function, the following description will only use one of the conductive springs 300 and its mating structure and components on the insulating body 100 as an example.

[0048] In this embodiment, the insulating body 100 is a flat plastic block, and a docking chamber 101 is formed therein. The surface of the insulating body 100 is provided with an insertion hole 102 communicating with the docking chamber 101, and the docking chamber 101 has an installation opening 111 for installing the conductive spring 300 into the docking chamber 101.

[0049] The conductor 200 is embedded in the insulating body 100. The conductor 200 has a conductive end 210, which passes through the docking chamber 101 and is positioned on one side of the axial direction of the socket 102.

[0050] Figure 10 is a schematic diagram of the operation of the terminal block and its operating pin according to the second embodiment of the present disclosure. Referring to Figure 10, a conductive spring 300 is disposed within the docking chamber 101. The conductive spring 300 has a fixed end 320 and a spring arm 310 extending from the fixed end 320. The fixed end 320 is fixed within the docking chamber 101 and is disposed on the other side of the axial direction of the socket 102 relative to the connecting end 210 of the conductor 200. The spring arm 310 is movably disposed in the docking chamber 101 and crosses the socket 102 to press against the connecting end 210 of the conductor 200.

[0051] Figure 11 is a partial exploded perspective view of the terminal block according to the second embodiment of the present disclosure. Figure 12 is a cross-sectional view of one of the terminal blocks according to the second embodiment of the present disclosure. Referring to Figures 11 and 12, a limiting cover 400 is provided in each mating chamber 101, and only one of them will be described as an example below. The limiting cover 400 is detachably disposed on the insulating body 100 to cover at least a portion of the mounting opening 111 and to restrict the conductive spring 300. In this embodiment, the limiting cover 400 closes the mounting opening 111. Specifically, the limiting cover 400 completely covers the conductive spring 300, thereby preventing the conductive spring 300 from falling off the mating chamber 101 due to the operation of the spring arm 310. In this embodiment, the body 100 is provided with a locking hole 141, and the limiting cover 400 has a locking pin 410, and the locking pin 410 is tightly inserted into the locking hole 141 to fix the limiting cover 400 to the body 100. Specifically, the side wall of the locking pin 410 has a protrusion 411 to press against the locking hole 141. In this embodiment, the body 100 has a stop hole 142, which is disposed on one side of the locking hole 141. The limiting cover 400 has a stop pin 420, which is inserted into the stop hole 142 to prevent the limiting cover 400 from rotating around the locking pin 410. The stop pin 420 is pressed tightly into the stop hole 142. Specifically, the side wall of the stop pin 420 has a protrusion 421 to press against the stop hole 142.

[0052] Figure 13 is a schematic diagram of one of the wiring operations of the terminal block according to the second embodiment of this disclosure. Referring to Figures 10 to 13, a groove 105 is provided on the surface of the insulating body 100 corresponding to each docking chamber 101. In this embodiment, only one of the grooves 105 is described as an example. The groove 105 connects to the corresponding docking chamber 101. The spring arm 310 of the conductive spring 300 is configured corresponding to the groove 105. An operating pin 500 is inserted into the groove 105. The operating pin 500 can move into the docking chamber 101 to push the spring arm 310 away from the conductor 200, so as to facilitate the insertion or withdrawal of the conductive wire 10 between the spring arm 310 and the conductive end 210 of the conductor 200.

[0053] Figure 14 is a perspective view of a terminal block according to the third embodiment of this disclosure. Referring to Figure 14, the third embodiment of this disclosure provides a terminal block for mating a pair of conductive wires 10. Specifically, this terminal block includes an insulating body 100, a conductor 200, and a pair of conductive springs 300. The conductive springs 300 are embedded in the insulating body 100. Specifically, in this embodiment, the conductor 200 has a conductive end 210 corresponding to each mating chamber 101. Each conductive end 210 passes through the corresponding mating chamber 101. The pair of conductive springs 300 are respectively disposed on the insulating body 100 corresponding to the two conductive ends 210 of the conductor 200 to clamp each conductive wire 10 to the conductor 200, thereby electrically connecting the pair of conductive wires 10 through the conductor 200. Specifically, the insulating body 100 of this embodiment has a pair of mating chambers 101 respectively disposed on two sides of the insulating body 100. A socket 102 is provided on one side edge of the insulating body 100 corresponding to the aforementioned mating chambers 101, and each socket 102 is connected to the corresponding mating chamber 101. The mounting openings 111 of the pair of mating chambers 101 are disposed on the same surface of the terminal block.

[0054] This disclosure relates to the arrangement of the conductive spring 300 and its mating structure and components on the insulating body 100. Since the aforementioned two conductive springs 300 and their mating structures and components on the insulating body 100 are mirror-mounted and have the same function, the following description will only use one of the conductive springs 300 and its mating structure and components on the insulating body 100 as an example.

[0055] In this embodiment, the insulating body 100 is a flat plastic block, and a docking chamber 101 is formed therein. The surface of the insulating body 100 is provided with an insertion hole 102 communicating with the docking chamber 101, and the docking chamber 101 has an installation opening 111 for installing the conductive spring 300 into the docking chamber 101.

[0056] The conductor 200 is embedded in the insulating body 100. The conductor 200 has a conductive end 210, which passes through the docking chamber 101 and is positioned on one side of the axial direction of the socket 102.

[0057] Figure 15 is a schematic diagram of the operation of the operating pin of the terminal block according to the third embodiment of the present disclosure. Referring to Figure 15, the conductive spring 300 is disposed in the docking chamber 101. The conductive spring 300 has a fixed end 320 and a spring arm 310 extending from the fixed end 320. The fixed end 320 is fixed in the docking chamber 101 and is disposed on the other side of the axial direction of the socket 102 relative to the connecting end 210 of the conductor 200. The spring arm 310 is movably disposed in the docking chamber 101 and crosses the socket 102 to press against the connecting end 210 of the conductor 200.

[0058] Figure 16 is a partial exploded perspective view of the terminal block according to the third embodiment of the present disclosure. Figure 17 is a cross-sectional view of one of the terminal blocks according to the third embodiment of the present disclosure. Referring to Figures 16 and 17, a limiting cover 400 is provided in each mating chamber 101, and only one of them will be described as an example below. The limiting cover 400 is detachably disposed on the insulating body 100 to cover at least a portion of the mounting opening 111 and to restrict the conductive spring 300. In this embodiment, the limiting cover 400 covers a portion of the mounting opening 111. Specifically, the limiting cover 400 covers the fixed end 320 of the conductive spring 300 and the spring arm 310 of the conductive spring 300 is exposed in the mounting opening 111, thereby preventing the conductive spring 300 from falling off the mating chamber 101 due to the movement of the spring arm 310. In this embodiment, the main body 100 is provided with a locking hole 141, and the limiting cover 400 has a locking pin 410. The locking pin 410 is tightly inserted into the locking hole 141 to fix the limiting cover 400 to the main body 100. Specifically, a protrusion 411 is provided on the side wall of the locking pin 410 to tighten the locking hole 141. In this embodiment, the main body 100 is provided with a stop hole 142, which is disposed on one side of the locking hole 141. The limiting cover 400 has a stop pin 420, which is inserted into the stop hole 142 to prevent the limiting cover 400 from rotating around the locking pin 410. The stop pin 420 is tightly inserted into the stop hole 142. Specifically, a protrusion 421 is provided on the side wall of the stop pin 420 to tighten the stop hole 142.

[0059] Figure 18 is a schematic diagram of one of the wiring operations of the terminal block according to the third embodiment of this disclosure. Referring to Figures 15 to 18, a groove 105 is provided on the surface of the insulating body 100 corresponding to each docking chamber 101. In this embodiment, only one of the grooves 105 is described as an example. The groove 105 connects to the corresponding docking chamber 101. The spring arm 310 of the conductive spring 300 is configured corresponding to the groove 105. An operating pin 500 is inserted into the groove 105. The operating pin 500 can move into the docking chamber 101 to push the spring arm 310 away from the conductor 200, so as to facilitate the insertion or withdrawal of the conductive wire 10 between the spring arm 310 and the conductive end 210 of the conductor 200.

[0060] Referring to Figure 16, in this embodiment, the limiting cover 400 has a guide edge 430, which is parallel to the axial direction of the insertion hole 102. A guide tenon 530 is protruding from one side of the operating pin 500. The guide tenon 530 abuts against the guide edge 430 and can slide along the guide edge 430.

[0061] The terminal block disclosed herein has its conductive spring 300 installed inside the mating chamber 101, and then the limiting cover 400 is subsequently installed on the insulating body 100 to restrict the conductive spring 300 from falling off. Therefore, the mating chamber 101 can be pre-set with a larger installation opening to facilitate assembly and avoid the need for excessive compression of the conductive spring 300 during installation, which would cause installation difficulties.

[0062] The above description is merely a preferred embodiment of this invention and is not intended to limit the patent scope of this invention. Other equivalent variations that utilize the patent spirit of this invention should also fall within the patent scope of this invention.

[0063] 10: Conductive wire 100: Insulating body 101: Docking Room 102: Socket 111: Installation opening 105: Slide 141: Fixing Hole 142: Stop hole 200: Conductor 210: Conductor terminal 300: Conductive spring 310: Spread Arm 320: Fixed end 400: Limiting cover 410: Locking pin 411:convex part 420: Stop pin 421:convex part 430: Guiding Edge 500: Operating pin 530: Guide tenon

Claims

1. A terminal block, comprising: An insulating body having a mating chamber enclosed within it, the surface of the insulating body having a socket communicating with the mating chamber, and the mating chamber having an installation opening; a conductor embedded in the insulating body, the conductor having a conductive end that passes through the mating chamber and is disposed on one side of the axial direction of the socket; a conductive spring disposed within the mating chamber, the conductive spring having a fixed end and a spring arm extending from the fixed end, the fixed end being fixed within the mating chamber and disposed on the other side of the axial direction of the socket relative to the conductive end of the conductor, the spring arm being movably disposed within the mating chamber, and the spring arm crossing the socket and pressing against the conductive end of the conductor; and a limiting cap detachably disposed in the insulating body to cover at least a portion of the installation opening and to restrict the conductive spring.

2. The terminal block as described in claim 1, wherein the limiting cover covers the spring arm of the conductive spring and the fixed end of the conductive spring is exposed in the mounting opening.

3. The terminal block as described in claim 1, wherein the limiting cover covers the fixed end of the conductive spring and the spring arm of the conductive spring is exposed in the mounting opening.

4. The terminal block as described in claim 1, wherein the limiting cover closes the mounting opening.

5. The terminal block as claimed in claim 1, wherein the surface of the insulating body is provided with a groove communicating with the mating chamber, the spring arm is configured to correspond to the groove, and an operating pin is inserted in the groove, the operating pin being movable into the mating chamber to push the spring arm away from the conductor.

6. The terminal block as claimed in claim 5, wherein the limiting cover has a guide edge parallel to the axial direction of the socket, and a guide tenon protrudes from one side of the operating pin, the guide tenon abutting against the guide edge and being slidable along the guide edge.

7. The terminal block as claimed in claim 1, wherein the insulating body is provided with a locking hole, the limiting cover has a locking pin, and the locking pin is tightly inserted into the locking hole.

8. The terminal block as described in claim 7, wherein the side wall of the locking pin is provided with a protrusion to press against the locking hole.

9. The terminal block as claimed in claim 7, wherein the insulating body has a stop hole disposed on one side of the locking hole, the limiting cover has a stop pin, and the stop pin is inserted into the stop hole.

10. The terminal block as described in claim 9, wherein the stop pin is loosely fitted into the stop hole.

11. The terminal block as claimed in claim 9, wherein the stop pin is tightly inserted into the stop hole.

12. The terminal block as claimed in claim 11, wherein the sidewall of the stop pin is provided with a protrusion to press against the stop hole.

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