Low-voltage intelligent molded case circuit breaker

Abstract

The utility model discloses a low-voltage intelligent molded case circuit breaker in the field of low-voltage intelligent molded case circuit breakers, which comprises a bottom plate, fixing holes, a dismounting mechanism and a circuit breaker body, the fixing holes penetrate through the four corners of the top of the bottom plate, and the circuit breaker body is fixedly connected to the top of the bottom plate through the dismounting mechanism. According to the low-voltage intelligent molded case circuit breaker, when the low-voltage intelligent molded case circuit breaker is installed, only the connecting blocks need to be embedded into the connecting grooves, the inclined faces of the clamping blocks need to be extruded, the clamping blocks are contracted into the contraction cavities, the reset springs are compressed, when the clamping blocks are aligned with the clamping grooves, the clamping blocks are embedded into the clamping grooves, and fixing and dismounting are completed; and the clamping blocks are moved out of the clamping grooves only by pulling the pull rods, so that connection by using screws is avoided, time and labor are saved during disassembly, time is saved, follow-up maintenance is facilitated, and the practicability of the device is improved.

Description

Technical Field

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

[0002] A circuit breaker is a distribution device used in power grids. It can connect, carry and disconnect current under normal circuit conditions. It can also connect, carry for a certain period of time and disconnect current under specified abnormal conditions (such as overload, short circuit, undervoltage and single-phase grounding fault). The electric operating mechanism is a special accessory for molded case circuit breakers. When used in conjunction with the circuit breaker, it can remotely close, disconnect and re-lock the circuit breaker to achieve centralized and automatic control of the transmission and distribution network. With the development of the electric power industry, the operating mechanism of molded case circuit breakers has gradually become the mainstream of current development, and the design is moving towards miniaturization and intelligence.

[0003] At present, low-voltage intelligent circuit breakers are mostly fixed by screws during installation. Therefore, multiple screws need to be removed when installing or removing the circuit breaker. Such an installation structure is not convenient for quick installation, disassembly and maintenance, and reduces the practicality of the device. For this reason, we propose a low-voltage intelligent molded case circuit breaker. Utility Model Content

[0004] The purpose of the utility model is to provide a low-voltage intelligent molded case circuit breaker to solve the problem raised in the above background technology that during installation of the current low-voltage intelligent circuit breaker, multiple screws need to be removed when installing or disassembling the circuit breaker, and such an installation structure is not convenient for rapid installation, disassembly and maintenance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-voltage intelligent molded case circuit breaker, comprising a base plate, a fixing hole, a disassembly and assembly mechanism and a circuit breaker body, wherein the fixing hole is opened through and opened at the four corners of the top edge of the base plate, and the circuit breaker body is fixedly connected to the top of the base plate through the disassembly and assembly mechanism, and the disassembly and assembly mechanism comprises a connecting groove, a shrinkage cavity, a pull rod, a connecting plate, a clamping block, a reset spring, a connecting block and a clamping groove, a connecting groove is opened in the middle of the top of the base plate, a shrinkage cavity is opened in the middle of the left and right sides of the connecting groove, and a pull rod is slidably connected through the middle of the mutually distant sides of the shrinkage cavity of the left and right parts, and the opposite ends of the pull rods of the left and right parts are fixedly connected with connecting plates, and the middle parts of the opposite sides of the connecting plates of the left and right parts are fixedly connected with clamping blocks, and the mutually distant sides of the connecting plates of the left and right parts are evenly fixedly connected with reset springs, and the middle part of the bottom of the circuit breaker body is fixedly connected with a connecting block, and the middle parts of the left and right sides of the connecting block are opened with clamping grooves.

[0006] As a further description of the above technical solution:

[0007] The connecting plate is slidably connected to the inside of the shrinkage cavity, and the outer side wall of the connecting plate is in contact with the inner side wall of the shrinkage cavity.

[0008] As a further description of the above technical solution:

[0009] The left end of the return spring of the left part is fixedly connected to the left side of the contraction chamber of the left part, and the right end of the return spring of the right part is fixedly connected to the right side of the contraction chamber of the right part.

[0010] As a further description of the above technical solution:

[0011] The length, width and height of the connecting block are equal to the length, width and depth of the connecting groove, and inclined surfaces are arranged on the front and rear sides of the clamping block.

[0012] As a further description of the above technical solution:

[0013] A protective mechanism is fixedly connected to the front and rear sides of the top of the circuit breaker body, and the protective mechanism includes a rotating seat, a rotating groove, a rotating shaft, a torsion spring and a protective cover. The left and right parts of the front and rear sides of the top of the circuit breaker body are fixedly connected to the rotating seat, and the opposite sides of the rotating seats of the left and right parts are provided with rotating grooves. A rotating shaft is rotatably connected through the middle parts of the opposite sides of the rotating grooves, and the left and right parts of the outer sides of the rotating shaft are sleeved with torsion springs. The outer side of the rotating shaft is fixedly connected to the protective cover.

[0014] As a further description of the above technical solution:

[0015] The torsion spring is located inside the rotation groove, and two ends of the torsion spring are respectively fixedly connected to the rotation groove and the opposite sides of the protective cover, and the front side of the protective cover is evenly provided with through grooves.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. When installing the low-voltage intelligent molded case circuit breaker, it is only necessary to embed the connecting block into the connecting groove, squeeze the inclined surface of the card block, so that the card block shrinks in the shrinkage cavity, compresses the reset spring, and when the card block is aligned with the card slot, the card block is embedded in the card slot to complete the fixation. When disassembling, it is only necessary to pull the pull rod to move the card block out of the card slot, thereby avoiding the use of screws for connection, making disassembly and assembly more time-saving and labor-saving, saving time, facilitating subsequent maintenance, and improving the practicality of the device.

[0018] 2. The low-voltage intelligent molded case circuit breaker rotates the protective cover to rotate the shaft and deform the torsion spring at the same time, installs the connecting wire, loosens the protective cover, and restores the protective cover by resetting the torsion spring, shielding the connection of the connecting wire to prevent dust from falling in and preventing short circuit at the connection, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a low-voltage intelligent molded case circuit breaker proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of a reset spring of a low-voltage intelligent molded case circuit breaker proposed by the utility model;

[0021] Figure 3 A schematic diagram of the structure of a slot opening of a low-voltage intelligent molded case circuit breaker proposed by the utility model;

[0022] Figure 4 The present invention is a schematic diagram of the protection mechanism structure of a low-voltage intelligent molded case circuit breaker.

[0023] In the figure: 100, bottom plate; 200, fixing hole; 300, disassembly and assembly mechanism; 310, connecting groove; 320, contraction chamber; 330, pull rod; 340, connecting plate; 350, clamping block; 360, reset spring; 370, connecting block; 380, clamping groove; 400, circuit breaker body; 500, protection mechanism; 510, rotating seat; 520, rotating groove; 530, rotating shaft; 540, torsion spring; 550, protective cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides a low-voltage intelligent molded case circuit breaker, which avoids the use of screws for connection, making disassembly and assembly more time-saving and labor-saving, saving time, facilitating subsequent maintenance, and improving the practicality of the device. Please refer to Figure 1-4 , including a bottom plate 100, a fixing hole 200, a disassembly and assembly mechanism 300 and a circuit breaker body 400;

[0028] Please refer again Figure 1 The bottom plate 100 is used to open the installation and fixing hole 200, the disassembly and assembly mechanism 300 and the circuit breaker body 400;

[0029] Please refer again Figure 1 The fixing holes 200 are opened through the four corners of the top of the bottom plate 100 to facilitate fixing the bottom plate 100. The circuit breaker body 400 is fixedly connected to the top of the bottom plate 100 through the disassembly mechanism 300;

[0030] Please refer again Figure 2-3 , the disassembly and assembly mechanism 300 includes a connecting groove 310, a contraction cavity 320, a pull rod 330, a connecting plate 340, a clamping block 350, a return spring 360, a connecting block 370 and a clamping groove 380;

[0031] Please refer again Figure 2 A connecting groove 310 is provided in the middle of the top of the bottom plate 100, and a contraction cavity 320 is provided in the middle of the left and right sides of the connecting groove 310, and a pull rod 330 is slidably connected through the middle of the mutually distant sides of the contraction cavities 320 of the left and right parts, and a connecting plate 340 is fixedly connected to the opposite ends of the pull rods 330 of the left and right parts, and a clamping block 350 is fixedly connected to the middle of the opposite sides of the connecting plates 340 of the left and right parts, and a return spring 360 is evenly fixedly connected to the mutually distant sides of the connecting plates 340 of the left and right parts;

[0032] Please refer again Figure 3 A connecting block 370 is fixedly connected to the middle of the bottom of the circuit breaker body 400 , and a card slot 380 is opened in the middle of the left and right sides of the connecting block 370 .

[0033] To sum up, during installation, it is only necessary to embed the connecting block 370 into the connecting groove 310, squeeze the inclined surface of the block 350, so that the block 350 shrinks in the shrinkage cavity 320, compresses the reset spring 360, and when the block 350 is aligned with the slot 380, the block 350 is embedded in the slot 380 to complete the fixation. During disassembly, it is only necessary to pull the pull rod 330 to move the block 350 out of the slot 380, thereby avoiding the use of screws for connection, making disassembly and assembly more time-saving and labor-saving, saving time, facilitating subsequent maintenance, and improving the practicality of the device.

[0034] Please refer again Figure 2 The connecting plate 340 is slidably connected to the inside of the shrinkage cavity 320 , and the outer wall of the connecting plate 340 is in contact with the inner wall of the shrinkage cavity 320 .

[0035] Please refer again Figure 2 The left end of the left return spring 360 is fixedly connected to the left side of the left contraction chamber 320 , and the right end of the right return spring 360 is fixedly connected to the right side of the right contraction chamber 320 .

[0036] Please refer again Figure 2 The length, width and height of the connecting block 370 are equal to the length, width and depth of the connecting groove 310 , and the front and rear sides of the clamping block 350 are provided with inclined surfaces.

[0037] Please refer again Figure 4 The top front and rear sides of the circuit breaker body 400 are fixedly connected with a protective mechanism 500, and the protective mechanism 500 includes a rotating seat 510, a rotating groove 520, a rotating shaft 530, a torsion spring 540 and a protective cover 550. The left and right parts of the top front and rear sides of the circuit breaker body 400 are fixedly connected with the rotating seat 510. The rotating groove 520 is opened on the opposite sides of the rotating seat 510 of the left and right parts. The rotating shaft 530 is rotatably connected through the middle of the opposite sides of the left and right non-rotating grooves 520. The left and right parts of the outer side of the rotating shaft 530 are sleeved with torsion springs 540, and the outer side of the rotating shaft 530 is fixedly connected with a protective cover 550.

[0038] Please refer again Figure 4 The torsion spring 540 is located inside the rotation slot 520 , and the two ends of the torsion spring 540 are fixedly connected to the rotation slot 520 and the opposite sides of the protective cover 550 , respectively. The front side of the protective cover 550 is evenly provided with through slots.

[0039] To summarize, by rotating the protective cover 550, the rotating shaft 530 rotates, and at the same time the torsion spring 540 is deformed, the connecting line is installed, the protective cover 550 is loosened, and the protective cover 550 is restored by resetting the torsion spring 540, so that the connection of the connecting line is shielded to prevent dust from falling in and prevent the connection from short circuit, thereby improving the safety of the device.

[0040] During specific use, personnel in this technical field fix the base plate 100 with screws during installation, and then embed the connecting block 370 into the connecting groove 310, squeeze the inclined surface of the block 350, so that the block 350 shrinks in the shrinkage cavity 320, and compresses the reset spring 360. When the block 350 is aligned with the slot 380, the block 350 is embedded in the slot 380, and the fixation is completed. The protective cover 550 is rotated to rotate the rotating shaft 530 and deform the torsion spring 540 at the same time, and the connecting line is installed. The protective cover 550 is loosened, and the protective cover 550 is restored by resetting the torsion spring 540 to shield the connection of the connecting line. When disassembling, it is only necessary to pull the pull rod 330 to move the block 350 out of the slot 380 and disassemble the circuit breaker body 400.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A low voltage intelligent molded case circuit breaker, characterized in that: The invention comprises a base plate (100), a fixing hole (200), a disassembly and assembly mechanism (300) and a circuit breaker body (400); the fixing hole (200) is opened through the four corners of the top of the base plate (100); the circuit breaker body (400) is fixedly connected to the top of the base plate (100) through the disassembly and assembly mechanism (300); the disassembly and assembly mechanism (300) comprises a connecting groove (310), a contraction cavity (320), a pull rod (330), a connecting plate (340), a clamping block (350), a reset spring (360), a connecting block (370) and a clamping groove (380); a connecting groove (310) is opened in the middle of the top of the base plate (100); A contraction cavity (320) is provided in the middle of the left and right sides of the connecting groove (310), a pull rod (330) is slidably connected through the middle of the mutually distant sides of the contraction cavity (320) of the left and right parts, a connecting plate (340) is fixedly connected to the opposite ends of the pull rod (330) of the left and right parts, a clamping block (350) is fixedly connected to the middle of the opposite sides of the connecting plates (340) of the left and right parts, a reset spring (360) is evenly fixedly connected to the mutually distant sides of the connecting plates (340) of the left and right parts, a connecting block (370) is fixedly connected to the middle of the bottom of the circuit breaker body (400), and a clamping groove (380) is provided in the middle of the left and right sides of the connecting block (370).

2. A low voltage intelligent molded case circuit breaker according to claim 1, characterized in that: The connecting plate (340) is slidably connected to the interior of the shrinkage cavity (320), and the outer wall of the connecting plate (340) is in contact with the inner wall of the shrinkage cavity (320).

3. A low voltage intelligent molded case circuit breaker according to claim 1, characterized in that: The left end of the left return spring (360) is fixedly connected to the left side of the left contraction chamber (320), and the right end of the right return spring (360) is fixedly connected to the right side of the right contraction chamber (320).

4. A low voltage intelligent molded case circuit breaker according to claim 1, characterized in that: The length, width and height of the connection block (370) are equal to the length, width and depth of the connection groove (310), and the front and rear sides of the clamping block (350) are provided with inclined surfaces.

5. A low voltage intelligent molded case circuit breaker according to claim 1, characterized in that: The top front and rear sides of the circuit breaker body (400) are fixedly connected with a protection mechanism (500), and the protection mechanism (500) comprises a rotating seat (510), a rotating groove (520), a rotating shaft (530), a torsion spring (540) and a protective cover (550). The left and right parts of the top front and rear sides of the circuit breaker body (400) are fixedly connected with the rotating seat (510), and the rotating groove (520) is provided on the opposite sides of the rotating seat (510) on the left and right parts. The rotating shaft (530) is rotatably connected to the middle parts of the opposite sides of the rotating groove (520) on the left and right parts. The torsion spring (540) is sleeved on the left and right parts of the outer side of the rotating shaft (530), and the protective cover (550) is fixedly connected to the outer side of the rotating shaft (530).

6. A low voltage intelligent molded case circuit breaker according to claim 5, characterized in that: The torsion spring (540) is located inside the rotation groove (520), and two ends of the torsion spring (540) are respectively fixedly connected to the rotation groove (520) and the opposite sides of the protective cover (550), and the front side of the protective cover (550) is evenly provided with through grooves.

Images