A connector with an isolation indication structure for a circuit breaker

Abstract

The present invention relates to the technical field of switchgear. Specifically, it relates to a connector with an isolation indication structure for a circuit breaker, which includes an upper housing and a lower housing. One end of the lower housing is provided with a slot, and on both sides of one end of the upper housing, load wire connection ports are symmetrically provided. Two screwdriver insertion ports are provided at one end of the upper housing. A push-pull button is inserted into the slot. An indication sealing plate is arranged inside the lower housing near the push-pull button. A spring is arranged between the indication sealing plate and the inner wall of the upper housing. An active chamber for the movement of the indication sealing plate is horizontally arranged inside the upper housing. When the push-pull button is pushed into the slot, the indication sealing plate can be pushed aside to one side. In the design of the present invention, through the indication sealing plate, the device can play an isolation and prompting role in the ON state. The screwdriver insertion ports are sealed by the indication sealing plate to achieve the effect of preventing wire disconnection, so as to effectively avoid the accidental generation of electric arcs due to wire disconnection when the product is in a conducting state in the circuit, thereby improving the electrical safety of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of switchgear, and more specifically, to a connector with an isolation indication structure for a circuit breaker. Background Art

[0002] A circuit breaker is a switching device that can close, carry, and interrupt the current under normal circuit conditions and can close, carry, and interrupt the current under abnormal circuit conditions within a specified time. When the push-pull button of the existing circuit breaker is pulled outwards, it is in the ON state. At this time, the screwdriver insertion port is in an open state. When a screwdriver is inserted into the screwdriver insertion port to push open the spring piece, an electric shock phenomenon will occur. When in the ON state, an arc will accidentally occur due to the product being in a conducting state during disconnection of the wire in the circuit, which is likely to cause problems with the safe use of the product. Summary of the Invention

[0003] The purpose of the present invention is to provide a connector with an isolation indication structure for a circuit breaker to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides a connector with an isolation indication structure for a circuit breaker, including an upper shell and a lower shell. One end of the lower shell is provided with a slot, and both sides of one end of the upper shell are symmetrically provided with load line connection ports. Two screwdriver insertion ports are provided at one end of the upper shell. A push-pull button is inserted into the slot. An indication sealing plate is arranged inside the lower shell near the push-pull button. A spring is arranged between the indication sealing plate and the inner wall of the upper shell. An activity chamber for the movement of the indication sealing plate is horizontally arranged inside the upper shell. When the push-pull button is pushed into the slot, it can push the indication sealing plate to one side, causing the indication sealing plate to horizontally slide to one side in the activity chamber.

[0005] Preferably, a spring piece is arranged inside the lower shell near the load line connection port. A load line is inserted into the load line connection port, and the spring piece can lock the load line.

[0006] Preferably, a pull ring is rotatably connected to the push-pull button. A pull ring placement groove is provided on the upper shell near the pull ring. The pull ring can rotate to be perpendicular to the push-pull button and be received in the pull ring placement groove.

[0007] Preferably, the indication sealing plate can move vertically and horizontally relative to the push-pull button.

[0008] Preferably, one end of the spring is tightly welded to the inner wall of the upper shell, and the other end of the spring is tightly welded to the indication sealing plate.

[0009] Preferably, a push rod is connected to one end of the push-pull button located inside the lower shell.

[0010] Preferably, the indicating cover plate includes a movable block, push blocks are symmetrically arranged at both ends of the movable block, a slope is arranged on one side of the push block close to the push-pull button, a slot for inserting and mating with the push block is formed on one side of the push-pull button close to the push block, an inclined surface is arranged on the inner wall of the slot close to the slope, and the inclined surface can be attached to and interact with the slope.

[0011] Preferably, a spring fixing groove is formed at the top of the movable block, and one end of the spring is inserted into the spring fixing groove.

[0012] Preferably, a clamping groove is formed at the bottom of the movable block, a clamping block is tightly welded inside the slot close to the clamping groove, and the clamping groove is in clamping fit with the clamping block.

[0013] Preferably, the movable block and the push block are of an integrally formed structure.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. In the connector with an isolation indication structure of the circuit breaker, through the indicating cover plate, the device can play a role of isolation and reminder in the ON state, avoiding the accidental insertion of a screwdriver into the screwdriver insertion port to cause an electric shock accident. When the device is in the ON state, the screwdriver insertion port is sealed by the indicating cover plate to achieve the effect of preventing disconnection of the wire, so as to effectively avoid the accidental generation of an electric arc due to the disconnection of the wire when the product is in the conducting state in the circuit, thereby improving the electrical safety of the product.

[0016] 2. In the connector with an isolation indication structure of the circuit breaker, through the spring, it is convenient to reset the indicating cover plate when the push-pull button is pulled out, facilitating the insertion of the screwdriver into the screwdriver insertion port.

[0017] 3. In the connector with an isolation indication structure of the circuit breaker, through the pull ring, it is convenient to pull out the push-pull button, facilitating the connection and disconnection of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention in the ON state;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present invention in the OFF state;

[0020] Figure 3 It is a schematic diagram of the overall structure of the present invention when connecting the load wire in the OFF state;

[0021] Figure 4 It is an exploded schematic diagram of the present invention;

[0022] Figure 5 It is a schematic diagram of the internal structure of the lower housing of the present invention;

[0023] Figure 6 Schematic diagram of the combination of the push-pull button and the indicating cover plate in the present invention;

[0024] Figure 7 Schematic diagram of the structure of the indicating cover plate in the present invention;

[0025] Figure 8 Schematic diagram of the structure of the push-pull button in the present invention;

[0026] Figure 9 Cross-sectional schematic diagram of the present invention in the ON state;

[0027] Figure 10 Cross-sectional schematic diagram of the present invention in the OFF state;

[0028] Figure 11 Cross-sectional schematic diagram of the present invention when the push-pull button is about to be pulled out;

[0029] Figure 12 Cross-sectional schematic diagram of the present invention when an external load line is connected in the OFF state.

[0030] In the figure: 1, lower shell; 11, slot; 12, spring piece; 2, upper shell; 21, load line connection port; 22, pull ring placement groove; 23, screwdriver insertion port; 3, push-pull button; 31, slotted opening; 311, clamping block; 312, inclined surface; 32, push rod; 4, pull ring; 5, load line; 6, indicating cover plate; 61, movable block; 611, spring fixing groove; 612, clamping groove; 62, push block; 621, inclined surface; 7, spring; 8, movable chamber. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0033] The present invention provides a connector for a circuit breaker with an isolation indication structure, as Figures 1-12 shown, which includes an upper shell 2 and a lower shell 1. One end of the lower shell 1 is provided with a slot 11. On both sides of one end of the upper shell 2, load line connection ports 21 are symmetrically arranged for externally connecting load lines. Two screwdriver insertion ports 23 are arranged at one end of the upper shell 2 for inserting a screwdriver. A push-pull button 3 is inserted into the slot 11 for disconnecting and connecting the device. An indication sealing plate 6 is arranged inside the lower shell 1 near the push-pull button 3 for separating the bottom of the push-pull button 3. A spring 7 is arranged between the indication sealing plate 6 and the inner wall of the upper shell 2. An activity chamber 8 for the indication sealing plate 6 to move is horizontally arranged inside the upper shell 2 to facilitate the movement of the indication sealing plate 6. When the push-pull button 3 is pushed into the slot 11, the indication sealing plate 6 can be pushed aside to make the indication sealing plate 6 slide horizontally to one side in the activity chamber 8.

[0034] Specifically, a spring piece 12 is arranged inside the lower shell 1 near the load line connection port 21. A load line 5 is inserted into the load line connection port 21, and the spring piece 12 can lock the load line 5.

[0035] It should be noted that the spring 7 plays a role in resetting. That is, after the push-pull button 3 is pulled out and the indication sealing plate 6 does not receive the force from the handle, the spring 7 plays a reset effect, making the indication sealing plate 6 leave the screwdriver insertion port 23. At this time, the screwdriver can be inserted into the screwdriver insertion port 23 again to push open the spring piece 12.

[0036] In addition, a pull ring 4 is rotatably connected to the push-pull button 3. A pull ring placement groove 22 is arranged on the upper shell 2 near the pull ring 4. The pull ring 4 can rotate to be perpendicular to the push-pull button 3 and be received in the pull ring placement groove 22 to facilitate pulling out the push-pull button 3.

[0037] Furthermore, the indication sealing plate 6 can move vertically and horizontally relative to the push-pull button 3 to open and close the screwdriver insertion port 23.

[0038] Furthermore, one end of the spring 7 is tightly welded to the inner wall of the upper shell 2, and the other end of the spring 7 is tightly welded to the indication sealing plate 6 to facilitate the action of the spring.

[0039] Furthermore, a push rod 32 is connected to one end of the push-pull button 3 located inside the lower shell 1. When the push-pull button 3 is inserted, it can push the push rod 32 to move, enabling a path to be formed inside the device.

[0040] Further, the indicating cover plate 6 includes a movable block 61. Push blocks 62 are symmetrically arranged at both ends of the movable block 61. A bevel surface 621 is provided on the side of the push block 62 close to the push-pull button 3. A slot 31 for plugging and mating with the push block 62 is formed on the side of the push-pull button 3 close to the push block 62. An inclined surface 312 is provided on the inner wall of the slot 31 close to the bevel surface 621. The inclined surface 312 and the bevel surface 621 can be attached to and interact with each other. When the push-pull button 3 is pushed into the device, the inclined surface 312 on the push-pull button 3 can squeeze the indicating cover plate 6. Through the force acting on the bevel surface 621 on one side of the push block 62, the push block 62 drives the movable block 61 to move, and then the indicating cover plate 6 is moved away, so as to close the inside of the screwdriver insertion port 23, playing the roles of isolation and prompting, avoiding electric shock accidents when a screwdriver is inserted into the screwdriver insertion port 23 to push open the spring piece 12. At the same time, the screwdriver insertion port 23 is sealed by the indicating cover plate 6 to achieve the effect of preventing wire disconnection, so as to effectively avoid accidental generation of electric arcs in the circuit due to wire disconnection when the product is in a conducting state, thereby improving the electrical safety of the product. The color design of the indicating cover plate 6 is different from that of the shell and can be displayed as ON. The internal color change can be observed through the screwdriver insertion port 23 for prompting. There are also other transmission methods between the indicating cover plate 6 and the handle, not limited to the vertical activity relationship between the vertical inclined surface and the inclined surface provided by the present invention.

[0041] Further, a spring fixing groove 611 is formed at the top of the movable block 61. One end of the spring 7 is inserted into the spring fixing groove 611 to ensure the limit of the spring 7 and make its expansion and contraction stable.

[0042] Further, a clamping groove 612 is formed at the bottom of the movable block 61. A clamping block 311 is tightly welded inside the slot 31 close to the clamping groove 612. The clamping groove 612 and the clamping block 311 are in clamping fit to prevent looseness when the push-pull button 3 is pulled out and the movable block 61 moves into the clamping groove 612.

[0043] Further, the movable block 61 and the push block 62 are of an integrally formed structure to avoid breakage during long-term use.

[0044] When the connector of the circuit breaker with an isolation indication structure in this embodiment is in use, pulling it outwards through the pull ring 4 can pull out the push-pull button 3, thereby achieving a circuit break. At this time, it is in the OFF state. The indicating cover plate 6 moves towards the push-pull button 3 under the action of the spring 7, and the inclined surface 312 fits with the inclined surface 621 on the push block 62. At this time, the screwdriver insertion port opens, facilitating the insertion of a screwdriver, which can then push open the spring piece 12. At this time, the load wire 5 is inserted into the load wire connection port 21. Then, the screwdriver is removed, and the spring piece 12 locks the load wire 5, achieving the connection of the load wire 5. Then, the push-pull button 3 is pressed into the slot 11 and the push rod 32 is pushed to move, thereby enabling the entire device to be in a conducting state. At this time, it is in the ON state. At this time, the bottom of the push-pull button 3 pushes open the indicating cover plate 6 and moves along the movable chamber 8, thus entering and squeezing into the screwdriver insertion port 23. The color of the indicating cover plate 6 can be observed from the outside of the screwdriver insertion port 23 inward, thus playing a certain prompting role. Moreover, the indicating cover plate 6 can seal the inside of the screwdriver insertion port 23. At this time, the screwdriver cannot enter from the screwdriver insertion port 23, and the screwdriver insertion port 23 is sealed by the indicating cover plate 6 to achieve the effect of preventing wire disconnection. This can effectively avoid accidental generation of electric arcs when the circuit is disconnected while the product is in a conducting state, thereby improving the electrical safety of the product.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A connector for a circuit breaker with an isolation indication structure, comprising an upper shell (2) and a lower shell (1), characterized in that: One end of the lower shell (1) is provided with a slot (11). On both sides of one end of the upper shell (2), load line connection ports (21) are symmetrically arranged. Two screwdriver insertion ports (23) are provided at one end of the upper shell (2). A push-pull button (3) is inserted into the slot (11). An indicating seal plate (6) is arranged inside the lower shell (1) near the push-pull button (3). A spring (7) is arranged between the indicating seal plate (6) and the inner wall of the upper shell (2). An activity chamber (8) for the indicating seal plate (6) to move is horizontally arranged inside the upper shell (2). When the push-pull button (3) is pushed into the slot (11), the indicating seal plate (6) can be pushed aside to make the indicating seal plate (6) horizontally slide to one side in the activity chamber (8). The indicating seal plate (6) includes a movable block (61). On both ends of the movable block (61), push blocks (62) are symmetrically arranged. On one side of the push block (62) close to the push-pull button (3), an inclined surface (621) is arranged. On one side of the push-pull button (3) close to the push block (62), a slot (31) inserted and matched with the push block (62) is arranged. On the inner wall of one side of the slot (31) close to the inclined surface (621), an inclined plane (312) is arranged. The inclined plane (312) and the inclined surface (621) can be attached and interact with each other. On the top of the movable block (61), a spring fixing groove (611) is arranged. One end of the spring (7) is inserted into the inside of the spring fixing groove (611). On the bottom of the movable block (61), a clamping groove (612) is arranged. Inside the slot (31) close to the clamping groove (612), a clamping block (311) is tightly welded. The clamping groove (612) and the clamping block (311) are clamped and matched.

2. The connector of the circuit breaker with an isolation indication structure according to claim 1, characterized in that: A spring piece (12) is arranged inside the lower shell (1) near the load line connection port (21). A load line (5) is inserted into the load line connection port (21). The spring piece (12) can lock the load line (5).

3. The connector of the circuit breaker with an isolation indication structure according to claim 1, characterized in that: A pull ring (4) is rotatably connected to the push-pull button (3). A pull ring placement groove (22) is arranged on the upper shell (2) near the pull ring (4). The pull ring (4) can be rotated to be perpendicular to the push-pull button (3) and stored in the pull ring placement groove (22).

4. The connector of the circuit breaker with an isolation indication structure according to claim 1, characterized in that: The indicating seal plate (6) can vertically and horizontally move relative to the push-pull button (3).

5. The connector of the circuit breaker with an isolation indication structure according to claim 1, characterized in that: One end of the spring (7) is closely attached to the inner wall of the upper shell (2), and the other end of the spring (7) is closely attached to the indicating seal plate (6).

6. The connector of the circuit breaker with an isolation indication structure according to claim 1, characterized in that: One end of the push-pull button (3) located inside the lower shell (1) is connected with a push rod (32).

7. The connector of the circuit breaker with an isolation indication structure according to claim 1, characterized in that: The movable block (61) and the push block (62) are of an integrally formed structure.

Images