Electronic molded case circuit breaker
By designing locking mechanism and limiting mechanism in electronic plastic case circuit breakers to limit the closing action of the push rod, the safety problem of the existing plastic case circuit breakers being accidentally touched during circuit maintenance is solved, and the operation safety is significantly improved sex.
Patent Information
- Application Number
- CN202420993749.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-09
AI Technical Summary
During the circuit maintenance process of existing plastic case circuit breakers, the push rod is easily touched by mistake, resulting in danger of workers' operation.
An electronic plastic case circuit breaker is designed, using a locking mechanism and a limiting mechanism. Through the cooperation of the locking frame, limiting the closing action of the push rod to prevent mistouching and closing.
Effectively prevent the push rod from being accidentally touched, improving the safety of circuit maintenance.
Smart Images
Figure CN222300587U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of circuit breakers, in particular to an electronic molded case circuit breaker. Background Art
[0002] Molded case circuit breaker is a device that can automatically cut off the current after the current exceeds the trip setting. The plastic insulator is used as the shell of the device to isolate the conductors and the grounded metal parts. All its parts are sealed in the plastic shell. Auxiliary contacts, undervoltage releases and shunt releases are mostly modularized. To inspect and repair the circuit, it is necessary to press down the push rod on the circuit breaker to disconnect the circuit. However, the push rod on the push rod circuit breaker may be accidentally touched and closed, causing danger to workers. Therefore, an electronic molded case circuit breaker is proposed. Utility Model Content
[0003] The main purpose of the utility model is to provide an electronic molded case circuit breaker, which can effectively solve the problems mentioned in the background technology.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] An electronic molded case circuit breaker comprises a circuit breaker body, wherein wiring grooves are arranged at the upper and lower ends of the circuit breaker body, a push rod is arranged on the circuit breaker body, a mounting groove is arranged on the circuit breaker body below the push rod, a locking mechanism is fixedly installed in the mounting groove, the locking mechanism comprises a mechanism housing fixed in the mounting groove, a docking hole is arranged on the mechanism housing, a locking frame is arranged in the docking hole, a limiting slot is arranged at the lower end edge of the locking frame, a lock core is fixedly installed in the mechanism housing, a lock tongue is arranged on the lock core, a limiting mechanism is arranged in the mechanism housing, the limiting mechanism comprises a positioning foot fixedly installed in the mechanism housing, a limiting bayonet is movably arranged on the positioning foot, a spring seat is fixedly installed on the limiting bayonet, a limiting spring is sleeved on the limiting bayonet, a steel wire is arranged between the limiting bayonet, a winding disk is fixedly installed in the middle position of the steel wire, a connecting shaft is fixedly installed in the middle position of the winding disk, and the lower end of the connecting shaft is fixed on the locking tongue.
[0006] Furthermore, a mounting opening is provided at the bottom of the mechanism housing, and the lock core is installed in the mechanism housing through the mounting opening.
[0007] Furthermore, the locking frame is connected to the mechanism housing through a docking hole, the limiting latch is embedded in the locking frame through a limiting latch groove, and the locking frame is restricted in the docking hole by the limiting latch.
[0008] Furthermore, a movable hole is provided on the positioning leg, and the limit pin is movably installed on the positioning leg through the movable hole.
[0009] Furthermore, one end of the limit spring is connected to the spring seat, and the other end of the limit spring is connected to the positioning support foot. A movable groove is provided in the middle position of the upper end of the mechanism housing, and the upper end of the connecting shaft is movably mounted on the mechanism housing through the movable groove.
[0010] Furthermore, the locking frame is restricted above the push rod by a limiting mechanism.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] After pressing the push rod on the circuit breaker body, the locking frame can be inserted into the docking hole. After the locking frame is inserted into the docking hole, the limit spring will push the limit pin to move forward and embed into the limit card slot, thereby fixing the locking frame in the docking hole. The locking frame fixed in the docking hole will limit the closing of the push rod, thereby preventing the push rod from being accidentally closed, thereby improving the safety of circuit maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0014] Figure 2 It is a partial structural schematic diagram of the utility model;
[0015] Figure 3 It is a schematic diagram of the locking mechanism of the utility model;
[0016] Figure 4 It is a schematic diagram of the limiting mechanism of the utility model.
[0017] In the figure: 1. circuit breaker body; 2. push rod; 3. installation groove; 4. wiring groove; 5. locking mechanism; 501. locking frame; 502. limit slot; 503. docking hole; 504. mechanism housing; 505. lock tongue; 506. lock core; 6. limit mechanism; 601. limit pin; 602. spring seat; 603. positioning support foot; 604. connecting shaft; 605. take-up reel; 606. steel wire; 607. limit spring. DETAILED DESCRIPTION
[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0019] like Figure 1As shown, the electronic molded case circuit breaker includes a circuit breaker body 1, wherein wiring grooves 4 are provided at the upper and lower ends of the circuit breaker body 1, a push rod 2 is provided on the circuit breaker body 1, and a mounting groove 3 is provided on the circuit breaker body 1 below the push rod 2, a locking mechanism 5 is fixedly installed in the mounting groove 3, a limiting mechanism 6 is provided in the mechanism housing 504, and a locking frame 501 is limited above the push rod 2 by the limiting mechanism 6. The locking mechanism 5 and the limiting mechanism 6 can cooperate to limit the movement of the push rod 2 on the circuit breaker body 1, thereby preventing the push rod 2 from being accidentally touched and closed by a person, thereby improving the safety of circuit maintenance.
[0020] like Figure 2 Figure 4 As shown, the limiting mechanism 6 includes a positioning leg 603 fixedly installed in the mechanism housing 504, a limiting latch 601 is movably installed on the positioning leg 603, a spring seat 602 is fixedly installed on the limiting latch 601, a limiting spring 607 is sleeved on the limiting latch 601, a steel wire 606 is provided between the limiting latch 601, and a winding disk 605 is fixedly installed at the middle position of the steel wire 606, a connecting shaft 604 is fixedly installed at the middle position of the winding disk 605, the lower end of the connecting shaft 604 is fixed on the locking tongue 505, a movable hole is opened on the positioning leg 603, the limiting latch 601 is movably installed on the positioning leg 603 through the movable hole, one end of the limiting spring 607 is connected to the spring seat 602, and the other end of the limiting spring 607 is connected to the positioning leg 603, a movable groove is opened in the middle position of the upper end of the mechanism housing 504, and the upper end of the connecting shaft 604 is movably installed on the mechanism housing 504 through the movable groove.
[0021] Specifically, after the locking frame 501 is inserted into the docking hole 503, the limit spring 607 will push the limit pin 601 on the spring seat 602 to move forward and embed into the limit slot 502, thereby fixing the locking frame 501 in the docking hole 503. The locking frame 501 fixed in the docking hole 503 will limit the push rod 2 from closing, thereby preventing the push rod 2 from being accidentally closed.
[0022] like Figure 2 Figure 3 As shown, the locking mechanism 5 includes a mechanism housing 504 fixed in the installation groove 3, a docking hole 503 is provided on the mechanism housing 504, a locking frame 501 is provided in the docking hole 503, a limiting slot 502 is provided at the lower edge of the locking frame 501, a lock core 506 is fixedly installed in the mechanism housing 504, a lock tongue 505 is provided on the lock core 506, an installation opening is provided at the bottom of the mechanism housing 504, the lock core 506 is installed in the mechanism housing 504 through the installation opening, the locking frame 501 is connected to the mechanism housing 504 through the docking hole 503, the limiting bayonet 601 is embedded in the locking frame 501 through the limiting slot 502, and the locking frame 501 is limited in the docking hole 503 by the limiting bayonet 601.
[0023] Specifically, the key can rotate the lock tongue 505 on the lock cylinder 506. After the lock tongue 505 rotates, it will drive the connecting shaft 604 to rotate. After the connecting shaft 604 rotates, it will drive the winding disk 605 to rotate. After the winding disk 605 rotates, it will tighten the steel wire 606, thereby pulling the limit pin 601 out of the pin limit slot 502. After the limit pin 601 is out of the pin limit slot 502, the locking frame 501 can be removed so that the push rod 2 can be closed.
[0024] It should be noted that the utility model is an electronic molded case circuit breaker. In actual use, the push rod 2 on the circuit breaker body 1 is first pressed. After pressing the push rod 2 on the circuit breaker body 1, the locking frame 501 can be inserted into the docking hole 503. After the locking frame 501 is inserted into the docking hole 503, the limit spring 607 will push the upper limit latch 601 of the spring seat 602 to move forward and embed into the limit latch groove 502, thereby fixing the locking frame 501 in the docking hole 503. After the locking frame 501 is fixed in the docking hole 503, the key on the lock core 506 can be pulled out, and the locking frame 501 fixed in the docking hole 503 will limit the push rod 2 from closing. , thereby preventing the push rod 2 from being accidentally touched and closed by someone, and at the same time, the key can be inserted into the lock core 506. After the key is inserted into the lock core 506, the lock tongue 505 on the lock core 506 can be rotated. Since a connecting shaft 604 is fixedly installed in the middle position of the winding disk 605, the lower end of the connecting shaft 604 is fixed on the lock tongue 505, so after the lock tongue 505 is rotated, it will drive the connecting shaft 604 to rotate, and then the winding disk 605 is used to tighten the steel wire 606. After the steel wire 606 is tightened, it will pull the limit pin 601 out of the pin limit slot 502. After the limit pin 601 is out of the pin limit slot 502, the locking frame 501 can be removed, so that the push rod 2 can be closed.
[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. An electronic molded case circuit breaker, comprising a circuit breaker body (1), characterized in that: The circuit breaker body (1) is provided with wiring grooves (4) at the upper and lower ends, the circuit breaker body (1) is provided with a push rod (2), the circuit breaker body (1) is provided with a mounting groove (3) below the push rod (2), a locking mechanism (5) is fixedly installed in the mounting groove (3), the locking mechanism (5) comprises a mechanism housing (504) fixed in the mounting groove (3), a docking hole (503) is provided in the mechanism housing (504), a locking frame (501) is provided in the docking hole (503), a limiting slot (502) is provided at the lower edge of the locking frame (501), a lock core (506) is fixedly installed in the mechanism housing (504), and a lock tongue is provided on the lock core (506). (505), a limiting mechanism (6) is provided in the mechanism housing (504), and the limiting mechanism (6) comprises a positioning foot (603) fixedly installed in the mechanism housing (504), a limiting latch (601) is movably installed on the positioning foot (603), a spring seat (602) is fixedly installed on the limiting latch (601), a limiting spring (607) is sleeved on the limiting latch (601), a steel wire (606) is provided between the limiting latch (601), and a winding disk (605) is fixedly installed in the middle position of the steel wire (606), a connecting shaft (604) is fixedly installed in the middle position of the winding disk (605), and the lower end of the connecting shaft (604) is fixed on the locking tongue (505).
2. The electronic molded case circuit breaker according to claim 1, characterized in that: The bottom of the mechanism housing (504) is provided with an installation opening, and the lock core (506) is installed in the mechanism housing (504) through the installation opening.
3. The electronic molded case circuit breaker according to claim 2, characterized in that: The locking frame (501) is connected to the mechanism housing (504) via the docking hole (503), the limiting latch (601) is embedded in the locking frame (501) via the limiting latch groove (502), and the locking frame (501) is limited in the docking hole (503) by the limiting latch (601).
4. The electronic molded case circuit breaker according to claim 3, characterized in that: The positioning support leg (603) is provided with a movable hole, and the limit latch (601) is movably mounted on the positioning support leg (603) through the movable hole.
5. The electronic molded case circuit breaker according to claim 4, characterized in that: One end of the limit spring (607) is connected to the spring seat (602), and the other end of the limit spring (607) is connected to the positioning leg (603). A movable groove is provided in the middle of the upper end of the mechanism housing (504), and the upper end of the connecting shaft (604) is movably mounted on the mechanism housing (504) through the movable groove.
6. The electronic molded case circuit breaker according to claim 5, characterized in that: The locking frame (501) is restricted above the push rod (2) by a limiting mechanism (6).