Molded case circuit breaker

Abstract

The utility model discloses a molded case circuit breaker, which relates to the technical field of circuit breakers and comprises a mounting plate and a circuit breaker, the circuit breaker is mounted on the front surface of the mounting plate, a protective mounting assembly is arranged on the outer wall of the mounting plate, a sliding block is arranged in a sliding groove, a reinforcing shaft is mounted on the front surface of the sliding block, and a first positioning block is mounted on the left side surface of the reinforcing shaft. A protection frame is arranged on the left side face of the first positioning block, a reinforcing rod is installed at the bottom of the first positioning block, a second positioning block is installed at the bottom of the reinforcing rod, a protection top plate is installed on the positioning side plate through two locking bolts and an installation rod, and the protection top plate can protect a wiring port in the top of the circuit breaker. The sliding blocks slide in the sliding grooves, the use height of the protection frame can be adjusted, the first positioning blocks are convenient to install through the arranged reinforcing shafts, the protection frame is convenient to install through the first positioning blocks and the second positioning blocks, the use stability of the protection frame is improved, and ventilation work can be conducted on the circuit breaker through the arranged ventilation net.

Description

Technical Field

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

[0002] Circuit breakers are used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. They automatically disconnect circuits in the event of severe overloads, short circuits, undervoltage faults, or other similar faults. Their functionality is equivalent to a combination of a fuse-type switch and an over- or under-temperature relay. Furthermore, interrupting the fault current generally requires no component changes. However, current circuit breakers often have exposed terminals for connecting wires, posing a safety hazard and potentially leading to accidents.

[0003] A molded case circuit breaker is proposed in the patent with publication number CN110660619A, which includes a toggle switch, a wiring slot, a wiring terminal, a protective cover, a side baffle, a connecting plate, an electromagnet, a through hole, and a protective cover 2. The protective cover 2 can be installed in a predetermined position first, and then the circuit breaker can be installed on the mounting plate. This arrangement can save a lot of time when installing circuit breakers in large quantities. When the circuit breaker is powered on, the electromagnet 141 and the connecting plate 22 are firmly attracted together and cannot be easily separated. When the circuit breaker needs to be removed, it is necessary to turn off the power so that the electromagnet 141 loses power and no longer generates a magnetic field. At this time, it is a safe situation, so the operator can operate freely. However, the following problems still exist in this patent:

[0004] The existing circuit breaker is not convenient to use to provide a protective effect during its use, and is not convenient to install and use.

[0005] In view of the above problems, it is necessary to design a molded case circuit breaker to overcome the above problems. Utility Model Content

[0006] The main purpose of the present invention is to provide a molded case circuit breaker that can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A molded case circuit breaker comprises a mounting plate and a circuit breaker, wherein the circuit breaker is mounted on the front of the mounting plate and a protective mounting assembly is provided on the outer wall of the mounting plate;

[0009] The protective mounting assembly includes a reinforcing plate arranged on the upper right side surface of the mounting plate, a positioning side plate is installed on the top of the reinforcing plate, a mounting bolt is installed in the middle of the right side surface of the positioning side plate, mounting rods are installed at both ends of the front and rear ends of the upper left side surface of the positioning side plate, a protective top plate is installed on the left side of the two mounting rods, a through hole is provided on the top of the protective top plate, and locking bolts are installed on the right side surfaces of the two mounting rods passing through the right side surfaces of the positioning side plates, a sliding groove is provided on the right side of the reinforcing plate, a slider is provided inside the sliding groove, a reinforcing shaft is installed on the front side of the slider, a first positioning block is installed on the left side of the reinforcing shaft (310), a protective frame is provided on the left side of the first positioning block, a ventilation net is provided on the front side of the protective frame, a reinforcing rod is installed on the bottom of the first positioning block, and a second positioning block is installed on the bottom of the reinforcing rod.

[0010] As a preferred solution of the present invention, the mounting plate and the positioning side plate are detachably connected, the positioning side plate is threadedly connected to the mounting bolts, and the positioning side plate is threadedly connected to the two mounting rods.

[0011] As a preferred solution of the present invention, the two mounting rods are threadedly connected to the locking bolts, the two mounting rods are threadedly connected to the protective top plate, and the positioning side plate and the reinforcement plate are non-detachably connected.

[0012] As a preferred solution of the present invention, the slider slides in the reinforcement plate, and the reinforcement plate and the slider are detachably connected, and the slider and the reinforcement shaft are detachably connected.

[0013] As a preferred solution of the present invention, the reinforcement shaft and the first positioning block are detachably connected, the first positioning block and the protective frame are detachably connected, and the protective frame and the ventilation net are non-detachably connected.

[0014] As a preferred solution of the present invention, the first positioning block is threadedly connected to the reinforcement rod, and the reinforcement rod is threadedly connected to the second positioning block. Beneficial effects

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The molded case circuit breaker is installed with a protective top plate through the provided positioning side plate using two locking bolts and a mounting rod. The protective top plate can protect the wiring port on the top of the circuit breaker. The provided mounting bolts facilitate the connection and installation of the positioning side plate and the reinforcement plate. The provided slider slides in the slide groove to adjust the height of the protective frame. The provided reinforcement shaft facilitates the installation of the first positioning block. The first and second positioning blocks facilitate the installation of the protective frame, thereby improving the stability of the protective frame. The provided ventilation net can ventilate the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the protective top plate structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the protective installation component of the present utility model.

[0020] In the figure: 1. Mounting plate; 2. Circuit breaker; 3. Protective mounting assembly; 301. Positioning side plate; 302. Mounting bolt; 303. Mounting rod; 304. Protective top plate; 305. Through hole; 306. Locking bolt; 307. Reinforcement plate; 308. Slide groove; 309. Slider; 310. Reinforcement shaft; 311. First positioning block; 312. Protective frame; 313. Ventilation net; 314. Reinforcement rod; 315. Second positioning block. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-3 As shown, a molded case circuit breaker includes a mounting plate 1 and a circuit breaker 2. The circuit breaker 2 is mounted on the front of the mounting plate 1, and a protective mounting assembly 3 is provided on the outer wall of the mounting plate 1.

[0023] The protective mounting assembly 3 includes a reinforcing plate 307 arranged on the upper right side of the mounting plate 1, a positioning side plate 301 is installed on the top of the reinforcing plate 307, a mounting bolt 302 is installed in the middle of the right side of the positioning side plate 301, mounting rods 303 are installed at the front and rear ends of the upper left side of the positioning side plate 301, and a protective top plate 304 is installed on the left side of the two mounting rods 303. A through hole 305 is provided on the top of the protective top plate 304, and the right side of the two mounting rods 303 passes through the right side of the positioning side plate 301 and is installed. A locking bolt 306 is installed, a slide groove 308 is provided on the right side of the reinforcement plate 307, a slider 309 is provided inside the slide groove 308, a reinforcement shaft 310 is installed on the front side of the slider 309, a first positioning block 311 is installed on the left side of the reinforcement shaft 310, a protective frame 312 is provided on the left side of the first positioning block 311, a ventilation net 313 is provided on the front side of the protective frame 312, a reinforcement rod 314 is installed at the bottom of the first positioning block 311, and a second positioning block 315 is installed at the bottom of the reinforcement rod 314.

[0024] As a preferred solution of the present invention, the mounting plate 1 and the positioning side plate 301 are detachably connected, the positioning side plate 301 is threadedly connected to the mounting bolts 302 , and the positioning side plate 301 is threadedly connected to the two mounting rods 303 .

[0025] As a preferred solution of the present invention, the two mounting rods 303 are threadedly connected to the locking bolts 306 , the two mounting rods 303 are threadedly connected to the protective top plate 304 , and the positioning side plate 301 and the reinforcement plate 307 are non-detachably connected.

[0026] As a preferred solution of the present invention, the slider 309 slides in the reinforcement plate 307, and the reinforcement plate 307 and the slider 309 are detachably connected, and the slider 309 and the reinforcement shaft 310 are detachably connected.

[0027] As a preferred solution of the present invention, the reinforcing shaft 310 and the first positioning block 311 are detachably connected, the first positioning block 311 and the protective frame 312 are detachably connected, and the protective frame 312 and the ventilation net 313 are non-detachably connected.

[0028] As a preferred solution of the present invention, the first positioning block 311 is threadedly connected to the reinforcement rod 314 , and the reinforcement rod 314 is threadedly connected to the second positioning block 315 .

[0029] It should be noted that the present invention is a molded case circuit breaker. When in use, the positioning side plate 301 is connected to the right side of the mounting plate 1 by means of mounting bolts 302, which is convenient for disassembly and use. The two mounting rods 303 are used to install the protective top plate 304. The through hole 305 provided on the top of the protective top plate 304 can provide protection for the wiring interface while facilitating wiring. The mounting rod 303 is locked and installed by the locking bolt 306, and the slider 309 is manually slid in the reinforcement plate 307 to adjust the use height of the protection frame 312. The reinforcement shaft 310 uses the first positioning block 311 and the second positioning block 315 to strengthen the positioning of the protection frame 312. The protection frame 312 can protect the front of the circuit breaker 2, and the reinforcement rod 314 facilitates the connection of the first positioning block 311 and the second positioning block 315.

[0030] The above shows and describes 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 to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A molded case circuit breaker, comprising a mounting plate (1) and a circuit breaker (2), characterized in that: A circuit breaker (2) is mounted on the front of the mounting plate (1), and a protective mounting assembly (3) is provided on the outer wall of the mounting plate (1); The protective mounting assembly (3) includes a reinforcing plate (307) arranged at the upper end of the right side surface of the mounting plate (1), a positioning side plate (301) is installed on the top of the reinforcing plate (307), a mounting bolt (302) is installed in the middle of the right side surface of the positioning side plate (301), mounting rods (303) are installed at both the front and rear ends of the upper end of the left side surface of the positioning side plate (301), a protective top plate (304) is installed on the left side of the two mounting rods (303), a through hole (305) is provided on the top of the protective top plate (304), and a lock is installed on the right side surface of the two mounting rods (303) passing through the right side surface of the positioning side plate (301). Tighten the bolt (306), a slide groove (308) is provided on the right side of the reinforcing plate (307), a slider (309) is provided inside the slide groove (308), a reinforcing shaft (310) is installed on the front side of the slider (309), a first positioning block (311) is installed on the left side of the reinforcing shaft (310), a protective frame (312) is provided on the left side of the first positioning block (311), a ventilation net (313) is provided on the front side of the protective frame (312), a reinforcing rod (314) is installed on the bottom of the first positioning block (311), and a second positioning block (315) is installed on the bottom of the reinforcing rod (314).

2. The molded case circuit breaker according to claim 1, characterized in that: The mounting plate (1) and the positioning side plate (301) are detachably connected, the positioning side plate (301) is threadedly connected to the mounting bolt (302), and the positioning side plate (301) is threadedly connected to the two mounting rods (303).

3. The molded case circuit breaker according to claim 1, characterized in that: The two mounting rods (303) are threadedly connected to the locking bolt (306), the two mounting rods (303) are threadedly connected to the protective top plate (304), and the positioning side plate (301) and the reinforcement plate (307) are non-detachably connected.

4. The molded case circuit breaker according to claim 1, characterized in that: The slider (309) slides in the reinforcement plate (307), and the reinforcement plate (307) and the slider (309) are detachably connected, and the slider (309) and the reinforcement shaft (310) are detachably connected.

5. The molded case circuit breaker according to claim 1, characterized in that: The reinforcing shaft (310) and the first positioning block (311) are detachably connected, the first positioning block (311) and the protective frame (312) are detachably connected, and the protective frame (312) and the ventilation net (313) are non-detachably connected.

6. The molded case circuit breaker according to claim 1, characterized in that: The first positioning block (311) is threadedly connected to the reinforcement rod (314), and the reinforcement rod (314) is threadedly connected to the second positioning block (315).

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