Molded case circuit breaker reset mechanism

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a reset mechanism of a molded case circuit breaker. According to the technical scheme, the circuit breaker comprises a circuit breaker body and an electric leakage detector, the circuit breaker body is provided with a closing switch, the electric leakage detector is provided with a closing button, and the circuit breaker further comprises a protection box installed on the side, opposite to the electric leakage detector, of the circuit breaker body; and a pressing mechanism for pressing the closing button and a closing mechanism for resetting the closing switch are respectively arranged in the protection box. According to the utility model, through cooperation of the pressing mechanism and the switching-on mechanism, when a person presses the switching-on button and pokes the switching-on switch, the person only needs to touch an insulating pull rope and an insulating pull ring which are far away from the circuit breaker body and the electric leakage detector, so that the person can be prevented from directly contacting the circuit breaker body and the electric leakage detector which have an electric leakage risk; the risk of electric shock of a human body can be effectively reduced, and the safety of the circuit breaker during closing reset is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a reset mechanism for a molded case circuit breaker. Background Art

[0002] The existing circuit breaker reset procedure is generally to press the corresponding button first, and then flip the switch to close the circuit. However, the reasons for the circuit breaker disconnection are different. If the circuit breaker trips due to leakage, there is a risk of electric shock if you touch the circuit breaker with your hand before finding the leakage location.

[0003] Traditional circuit breakers lack a safe and reliable reset mechanism and need to be reset manually. For non-technical personnel who lack circuit knowledge, manual reset is very likely to cause the risk of electric shock. Summary of the invention

[0004] The purpose of the utility model is to propose a reset mechanism for a molded case circuit breaker in view of the problem that traditional circuit breakers in the background technology lack a safe and reliable reset mechanism and need to be reset manually. For non-technical personnel who lack circuit knowledge, manual reset is very likely to cause the risk of electric shock.

[0005] The technical solution of the utility model: a molded case circuit breaker reset mechanism, comprising a circuit breaker body and a leakage detector, wherein a closing switch is arranged on the circuit breaker body, a closing button is arranged on the leakage detector, and a protection box is installed on the side of the circuit breaker body opposite to the leakage detector; a pressing mechanism for pressing the closing button and a closing mechanism for resetting the closing switch are respectively installed in the protection box.

[0006] Preferably, the pressing mechanism includes a transmission bar, one end of the transmission bar passes through the protective box and extends outside the protective box, the other end of the transmission bar is fixedly connected to a connecting rope, the end of the connecting rope away from the transmission bar passes through the protective box and is fixedly connected to a pressure strip, the end of the pressure strip away from the connecting rope is rotatably connected to a side of the leakage detector close to the closing button, an arc-shaped pressure block is provided at the bottom of the pressure strip just above the closing button, a spring is fixedly connected to the bottom of the end of the pressure strip close to the connecting rope and the top of the protective box, and the connecting rope is located inside the spring.

[0007] Preferably, the closing mechanism includes a main gear, a transmission gear, a secondary gear and a connecting shaft, and the main gear, transmission gear and secondary gear are all rotatably connected in a protective box, the connecting shaft is rotatably connected in the protective box, and one end thereof is fixedly connected to the center of a circle of the closing switch, and the end of the connecting shaft located in the protective box is fixedly connected to the center of a circle of the secondary gear, and the teeth on opposite sides of the transmission gear are respectively meshed with the main gear and the secondary gear, and a plurality of tooth blocks matching the teeth of the main gear are arranged on the transmission bar.

[0008] Preferably, a green fluorescent area is provided at the bottom end of the transmission bar, an end of the transmission bar located outside the protective box is fixedly connected to an insulating pull rope, and an end of the insulating pull rope away from the transmission bar is fixedly connected to an insulating pull ring.

[0009] Preferably, the transmission bar is provided with a plurality of grooves adapted to the tooth block, an inner wall on one side of the groove is slidably connected to the tooth block, and a spring wire is fixedly connected between the inner wall on the other side of the groove and the groove.

[0010] Preferably, a limit frame adapted to the transmission bar is fixedly connected to the inner wall of the protection box, and the transmission bar is limit-slidably connected in the limit frame.

[0011] Preferably, the inner wall of the protection box and one end of the limiting frame are fixedly connected with a protection tube, and the connecting rope passes through and is connected in the protection tube.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects:

[0013] Through the cooperation of the pressing mechanism and the closing mechanism, when a person presses the closing button and turns the closing switch, the human body only needs to touch the insulating pull rope and the insulating pull ring away from the circuit breaker body and the leakage detector to avoid direct contact with the circuit breaker body and the leakage detector where there is a leakage risk, which can effectively reduce the risk of electric shock to the human body and enhance the safety when the circuit breaker is closed and reset;

[0014] At the same time, the automatic resetting of the mechanism is achieved through the cooperation of the pressing mechanism and the closing mechanism, thereby satisfying the effect of multiple uses of the mechanism, which not only improves the safety of the device, but also enhances the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Provide a structural schematic diagram of the utility model;

[0016] Figure 2 A schematic cross-sectional view of the structure of the protective box in the utility model is given;

[0017] Figure 3 Provide the utility model Figure 2 A schematic diagram of the structure of the middle A area;

[0018] Figure 4 A structural schematic diagram of the layering strip of the utility model is given.

[0019] Reference numerals: 1. circuit breaker body; 2. leakage detector; 3. protection box; 4. insulating pull rope; 5. insulating pull ring;

[0020] 6. Pressing mechanism; 601. Limiting frame; 602. Transmission bar; 603. Tooth block; 604. Connecting rope; 605. Pressing bar; 606. Spring; 607. Protective tube; 608. Groove; 609. Spring wire;

[0021] 7. Closing mechanism; 701. Main gear; 702. Transmission gear; 703. Secondary gear; 704. Connecting shaft;

[0022] 8. Arc-shaped pressure block; 9. Closing switch; 10. Closing button. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] like Figure 1-4 As shown, the utility model includes a circuit breaker body 1 and a leakage detector 2, the circuit breaker body 1 is provided with a closing switch 9, the leakage detector 2 is provided with a closing button 10, and also includes a protection box 3 installed on the side of the circuit breaker body 1 opposite to the leakage detector 2; a pressing mechanism 6 for pressing the closing button 10 and a closing mechanism 7 for resetting the closing switch 9 are respectively installed in the protection box 3.

[0026] Furthermore, the pressing mechanism 6 includes a transmission bar 602, one end of which passes through the protective box 3 and extends outside the protective box 3, and the other end of the transmission bar 602 is fixedly connected to a connecting rope 604, and the end of the connecting rope 604 away from the transmission bar 602 passes through the protective box 3 and is fixedly connected to a pressure strip 605, and the end of the pressure strip 605 away from the connecting rope 604 is rotatably connected to a side of the leakage detector 2 close to the closing button 10, and an arc-shaped pressing block 8 is provided at the bottom of the pressure strip 605 directly above the closing button 10, and a spring 606 is fixedly connected to the bottom of the end of the pressure strip 605 close to the connecting rope 604 and the top of the protective box 3, and the connecting rope 604 is located in the spring 606, and the transmission bar 602 is pulled so that the movement of the transmission bar 602 drives the connecting rope 604 and one end of the pressure strip 605 fixedly connected to the connecting rope 604 to approach the protective box 3, and in this process, the arc on the pressure strip 605 The shaped pressing block 8 will gradually abut against the closing button 10 on the leakage detector 2. Before completing the closing of the closing switch 9, it is necessary to press the setting of the closing button 10 first. The above operation can achieve that when the person presses the closing button 10, the human body only needs to touch the insulating insulating pull rope 4 and the insulating pull ring 5 to solve the problem of contact between the human body and the leakage detector 2 and the closing button 10 with the risk of leakage, which can effectively reduce the risk of electric shock to the human body. After completing the step of pressing the closing button 10, release the insulating pull ring 5. At this time, the spring 606 is converted from the compressed state when the pressure strip 605 was pressed down to the original state. Its elastic force will push the pressure strip 605 to reset, and drive the transmission strip 602 to reset through the connecting rope 604. On the one hand, it does not affect the pop-up action of the closing button 10 after detecting leakage again. On the other hand, it achieves the effect of multiple use of the mechanism, which not only improves the safety of the device, but also enhances the practicality of the device.

[0027] Furthermore, the closing mechanism 7 includes a main gear 701, a transmission gear 702, a secondary gear 703 and a connecting shaft 704. The main gear 701, the transmission gear 702 and the secondary gear 703 are all rotatably connected in the protection box 3. The connecting shaft 704 is rotatably connected in the protection box 3, and one end thereof is fixedly connected to the center of the closing switch 9. The end of the connecting shaft 704 located in the protection box 3 is fixedly connected to the center of the secondary gear 703. The teeth on the opposite sides of the transmission gear 702 are respectively meshed with the main gear 701 and the secondary gear 703. The transmission bar 602 is provided with a plurality of tooth blocks 603 adapted to the teeth of the main gear 701. When the main gear 701 moves downward, the tooth block 603 on the transmission bar 602 drives the main gear 701 to rotate counterclockwise. As the main gear 701 rotates counterclockwise, the transmission gear 702 meshing with it rotates clockwise. Then the transmission gear 702 drives the secondary gear 703 to rotate counterclockwise. Finally, the connecting shaft 704 fixedly connected thereto drives the closing switch 9 to rotate upward to reset. Finally, the human body does not need to directly touch the circuit breaker body 1 and the leakage detector 2 to complete the remote switch reset, which greatly improves the safety of the circuit breaker reset and avoids the risk of safety accidents caused by human body contact leakage.

[0028] Furthermore, a green fluorescent area is provided at the bottom end of the transmission bar 602, and an insulating pull rope 4 is fixedly connected to one end of the transmission bar 602 outside the protective box 3, and an insulating pull ring 5 is fixedly connected to the other end of the insulating pull rope 4 away from the transmission bar 602. By grasping the insulating pull ring 5 and pulling the insulating pull rope 4, the transmission bar 602 is driven to move outside the protective box 3. By utilizing the insulation property of the insulating material to the electric current and cooperating with the position of the insulating pull rope 4 and the insulating pull ring 5 outside the protective box 3 away from the circuit breaker body 1 and the leakage detector 2, the risk of electric shock caused by direct contact of the human body with the circuit breaker body 1 and the leakage detector 2 can be effectively avoided. The setting of the green fluorescent area can be pulled into the protective box 3 when leakage occurs, so as to achieve the effect of transmitting information and alerting personnel.

[0029] Furthermore, the transmission bar 602 is provided with a plurality of grooves 608 adapted to the tooth block 603, the inner wall of one side of the groove 608 is slidably connected to the tooth block 603, and the inner wall of the other side of the groove 608 is fixedly connected to the groove 608. When the transmission bar 602 moves downward and drives the main gear 701 to rotate counterclockwise, the tooth block 603 can stably apply thrust to the teeth on the main gear 701 due to the limitation of the groove 608 on the tooth block 603, which is convenient for the main gear 701 to rotate counterclockwise. 1 rotates counterclockwise, and when the closing is completed, the spring wire 609 is reset by elastic force. During this period, the connecting rope 604 is pulled up by the pressure strip 605. When the transmission bar 602 is pulled upward by the connecting rope 604 to reset, at this time, the groove 608 no longer limits the tooth block 603, so that when the tooth block 603 touches the teeth of the main gear 701, it will be squeezed into the groove 608 and compress the spring wire 609. The squeezed spring wire 609 will bounce upward when the teeth of the main gear 701 rotate to the gap. When the spring 606 is reset, the transmission bar 602 will be restored to its original state. When the leakage detector 2 detects leakage again, the closing switch 9 rebounds and closes again, and the relevant structure in the closing mechanism 7 starts to rotate. Finally, the main gear 701 starts to rotate clockwise, and the transmission bar 602 is pushed upward for a distance through the tooth block 603. At this time, the green fluorescent area at the bottom of the transmission bar 602 will be pulled into the protection box 3 to achieve a warning effect, and convey to the outside world that the circuit breaker body 1 is in a problematic state at this time, reminding personnel to repair it in time. When it is necessary to close the circuit breaker again, it is only necessary to pull the transmission bar 602 again to restore the transmission bar 602 to its original state. During this period, the transmission bar 602 will close the closing switch 9 again through the closing mechanism 7. The above setting not only drives the main gear 701 to rotate, but also achieves the effect of automatic structural reset and convenient multiple use of the mechanism through the action coordination between the teeth of the main gear 701 during the up and down movement of the transmission bar 602.

[0030] Among them, the inner wall of the protective box 3 is fixedly connected with a limit frame 601 adapted to the transmission bar 602, and the transmission bar 602 is limited and slidably connected in the limit frame 601. Through this setting, the sliding stability of the transmission bar 602 during transmission under the drive of tension can be further enhanced, ensuring stable transmission between the various structures connected thereto, thereby improving the stability and safety of the device.

[0031] In addition, the inner wall of the protective box 3 and one end of the limit frame 601 are fixedly connected with a protective tube 607, and the connecting rope 604 is connected through the protective tube 607. Through this arrangement, the risk of the lubricating oil applied on the transmission structure and the internal dust contaminating the connecting rope 604 can be effectively reduced, and the problem of the connecting rope 604 being contaminated with a large amount of lubricating oil and dust, which causes a decrease in transmission efficiency, can be avoided, and the hygiene of the connecting rope 604 is also improved.

[0032] Working principle: When the device is in use, by pulling the transmission bar 602, the movement of the transmission bar 602 drives the connecting rope 604 and one end of the pressure bar 605 fixedly connected to the connecting rope 604 to move closer to the protective box 3. During this process, the arc-shaped pressure block 8 on the pressure bar 605 will gradually abut the closing button 10 on the leakage detector 2. Before completing the closing of the closing switch 9, it is necessary to press the setting of the closing button 10 first. The above operation can achieve that when the person presses the closing button 10, the human body only needs to touch the insulating pull rope 4 and the insulating pull ring 5 to solve the leakage caused by contact between the human body. The risk-free leakage detector 2 and the closing button 10 can effectively reduce the risk of electric shock to the human body. After completing the step of pressing the closing button 10, the insulating pull ring 5 is released. At this time, the spring 606 is converted from the compressed state when the pressure strip 605 is pressed down to the original state. Its elastic force will push the pressure strip 605 to reset, and drive the transmission bar 602 to reset through the connecting rope 604. On the one hand, it does not affect the pop-up action of the closing button 10 after detecting the leakage again. On the other hand, it achieves the effect of multiple use of the mechanism, which not only improves the safety of the device, but also enhances the practicality of the device.

[0033] When the transmission bar 602 moves downward, the tooth block 603 on the transmission bar 602 drives the main gear 701 to rotate counterclockwise. As the main gear 701 rotates counterclockwise, the transmission gear 702 meshing with it rotates clockwise. Then the transmission gear 702 drives the secondary gear 703 to rotate counterclockwise. Finally, the connecting shaft 704 fixedly connected to it drives the closing switch 9 to rotate upward to reset. Finally, the human body does not need to directly touch the circuit breaker body 1 and the leakage detector 2 to complete the remote switch reset, which greatly improves the safety of the circuit breaker reset and avoids the risk of safety accidents caused by human body contact leakage.

[0034] When the transmission bar 602 moves downward and drives the main gear 701 to rotate counterclockwise, due to the limitation of the groove 608 on the tooth block 603, the tooth block 603 can stably apply thrust to the teeth on the main gear 701, facilitating the counterclockwise rotation of the main gear 701. When the switch is closed, the spring wire 609 is reset by elastic force, during which the connecting rope 604 is pulled up by the pressure strip 605. When the transmission bar 602 is pulled upward by the connecting rope 604 to reset, the groove 608 no longer limits the tooth block 603, so that when the tooth block 603 touches the teeth of the main gear 701, it will be squeezed into the groove 608 and compress the spring wire 609. The squeezed spring wire 609 will bounce upward and reset when the teeth of the main gear 701 rotate to the gap, pushing the groove 608 to reset. After the spring 606 is reset, the transmission bar 602 will return to its original state. When the detector 2 detects the leakage again, the closing switch 9 rebounds and closes again, the relevant structure in the closing mechanism 7 starts to rotate, and finally the main gear 701 starts to rotate clockwise, and the transmission bar 602 is pushed upward for a distance through the tooth block 603. At this time, the green fluorescent area at the bottom of the transmission bar 602 will be pulled into the protective box 3 to achieve a warning effect, and convey to the outside world that the circuit breaker body 1 is in a problematic state at this time, and remind personnel to repair it in time. When it is necessary to close the circuit again, it is only necessary to pull the transmission bar 602 again to restore the transmission bar 602 to its original state. During this period, the transmission bar 602 will close the closing switch 9 again through the closing mechanism 7. The above setting not only drives the main gear 701 to rotate, but also achieves the effect of automatic resetting of the structure and convenient multiple use of the mechanism through the action coordination between the transmission bar 602 and the teeth of the main gear 701 during the up and down movement.

[0035] The above-mentioned specific embodiments are only several optional embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A molded case circuit breaker reset mechanism, comprising a circuit breaker body (1) and a leakage detector (2), wherein the circuit breaker body (1) is provided with a closing switch (9), and the leakage detector (2) is provided with a closing button (10), characterized in that: Also includes: A protection box (3) is installed on the side of the circuit breaker body (1) opposite to the leakage detector (2); A pressing mechanism (6) for pressing a closing button (10) and a closing mechanism (7) for resetting a closing switch (9) are respectively installed in the protection box (3).

2. A molded case circuit breaker reset mechanism according to claim 1, characterized in that: The pressing mechanism (6) comprises a transmission bar (602), one end of the transmission bar (602) passes through the protection box (3) and extends outside the protection box (3), the other end of the transmission bar (602) is fixedly connected to a connecting rope (604), the end of the connecting rope (604) away from the transmission bar (602) passes through the protection box (3) and is fixedly connected to a pressure strip (605), the end of the pressure strip (605) away from the connecting rope (604) is rotatably connected to a side of the leakage detector (2) close to the closing button (10), the bottom of the pressure strip (605) is located directly above the closing button (10) and is provided with an arc-shaped pressing block (8), the bottom of the end of the pressure strip (605) close to the connecting rope (604) is fixedly connected to a spring (606) before the top of the protection box (3), and the connecting rope (604) is located inside the spring (606).

3. A molded case circuit breaker reset mechanism according to claim 2, characterized in that: The closing mechanism (7) comprises a main gear (701), a transmission gear (702), a secondary gear (703) and a connecting shaft (704); the main gear (701), the transmission gear (702) and the secondary gear (703) are all rotatably connected in the protection box (3); the connecting shaft (704) is rotatably connected in the protection box (3), and one end thereof is fixedly connected to the center of a circle of a closing switch (9); the end of the connecting shaft (704) located in the protection box (3) is fixedly connected to the center of a circle of the secondary gear (703); the teeth on opposite sides of the transmission gear (702) are respectively meshed with the main gear (701) and the secondary gear (703); and the transmission bar (602) is provided with a plurality of tooth blocks (603) adapted to the teeth of the main gear (701).

4. A molded case circuit breaker reset mechanism according to claim 2, characterized in that: A green fluorescent area is provided at the bottom end of the transmission bar (602); one end of the transmission bar (602) located outside the protective box (3) is fixedly connected to an insulating pull rope (4); and one end of the insulating pull rope (4) away from the transmission bar (602) is fixedly connected to an insulating pull ring (5).

5. A molded case circuit breaker reset mechanism according to claim 2, characterized in that: The transmission bar (602) is provided with a plurality of grooves (608) adapted to the tooth block (603); an inner wall on one side of the groove (608) is slidably connected to the tooth block (603); and a spring wire (609) is fixedly connected between the inner wall on the other side of the groove (608) and the groove (608).

6. A molded case circuit breaker reset mechanism according to claim 2, characterized in that: A limit frame (601) adapted to the transmission bar (602) is fixedly connected to the inner wall of the protection box (3), and the transmission bar (602) is limit-slidably connected in the limit frame (601).

7. A molded case circuit breaker reset mechanism according to claim 6, characterized in that: The inner wall of the protection box (3) and one end of the limiting frame (601) are fixedly connected with a protection tube (607), and the connection rope (604) passes through and is connected to the protection tube (607).

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