Molded case circuit breaker

Abstract

The utility model discloses a molded case circuit breaker, which comprises a circuit breaker main body and a toggle part rotatably arranged in the circuit breaker main body, the front surface of the circuit breaker main body is provided with a fixing shell, the fixing shell is internally provided with a fixing mechanism, the toggle part can move in the fixing shell, and when the circuit breaker main body is in an open-circuit closed state, the toggle part can move in the fixing shell. The stirring sleeve is arranged in the fixing shell, the stirring part is fixed by the fixing mechanism, the fixing mechanism comprises a fixing plate, the interior of the fixing shell is fixedly connected with the fixing plate, a guide groove is formed in the fixing plate, and a fixing groove is formed in the guide groove. After the toggle switch is rotated to a closed circuit, the toggle switch can be fixed and cannot be reset when a worker touches the toggle switch by mistake, so that the circuit cannot be powered on, and the safety of the worker during operation is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker technical field, concretely is a moulded case circuit breaker. BACKGROUND

[0002] Moulded case circuit breaker is a kind of equipment that can automatically cut off current after current exceeds trip setting, uses plastic insulator as the shell of device, is used to isolate between conductor and ground metal part, and all parts are sealed in plastic shell, and auxiliary contact, under-voltage release and shunt release etc.

[0003] The existing moulded case circuit breaker usually needs staff to operate switch when overhauling, and the circuit is closed after being powered off by moulded case circuit breaker, but the existing moulded case circuit breaker does not have the mechanism for fixing switch, when switch is operated to close, it is easily opened by mistake, causes circuit to be powered on, so that worker is easily electrocuted when operating, and there is security risk. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of moulded case circuit breaker to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of moulded case circuit breaker, including circuit breaker main body and rotatable setting in the operating portion of circuit breaker main body inside, the front of the circuit breaker main body is provided with fixed shell, the inside of the fixed shell is provided with fixed mechanism, the operating portion can move in the inside of fixed shell, when circuit breaker main body is in the closed state of circuit breaking, operating portion is fixed by fixed mechanism.

[0006] As a preferred scheme of the utility model, the fixed mechanism includes fixed plate, the inside of the fixed shell is fixedly connected with fixed plate, the inside of the fixed plate is provided with guide slot, the inside of the guide slot is provided with fixed slot.

[0007] As a preferred scheme of the utility model, the operating portion is provided with operating switch, the operating switch is elastically provided with operating sleeve, the both sides of the operating sleeve are provided with connecting column, and the connecting column can be slidably connected with guide slot.

[0008] As a preferred scheme of the utility model, the inside of the operating sleeve is provided with sliding slot, the inside of the sliding slot is detachably provided with fixed bolt, one end of the fixed bolt is connected with operating switch by screwing through operating sleeve, and the outside of the fixed bolt is provided with spring.

[0009] As a preferred scheme of the utility model, the spring always provides a thrust to operating sleeve, so that operating sleeve is sleeved on operating switch, and when operating sleeve is closely sleeved on operating switch, connecting column is clamped in fixed slot.

[0010] As a preferred scheme of the utility model, one end of the connecting column is fixedly connected with a limiting block, and the limiting block is in sliding connection with the outer wall of the fixed plate.

[0011] Compared with the prior art, the utility model has the beneficial effects that: through cooperation of the fixed plate, the guide groove, the fixed groove, the knob sleeve and the connecting column and other structures, the knob switch can be fixed after being rotated to close the circuit, and will not be reset when being accidentally touched by personnel, so as to cause the circuit to be powered on, and the safety of the personnel during operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the perspective view of the utility model;

[0013] Figure 2 It is the fixed mechanism structure schematic view of the utility model;

[0014] Figure 3 It is the knob sleeve section structure schematic view of the utility model;

[0015] Figure 4 It is the Figure 3 Enlarged structure schematic view of A place in the utility model.

[0016] In the drawing: 1, circuit breaker main body; 2, fixed shell; 3, knob part; 4, knob sleeve; 5, fixed plate; 6, guide groove; 7, fixed groove; 8, connecting column; 9, limiting block; 10, sliding slot; 11, fixed bolt; 12, spring; 13, knob switch. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figures 1 to 4 The utility model provides a kind of technical scheme: a molded case circuit breaker, including circuit breaker main body 1 and the knob part 3 rotatably arranged in the inside of circuit breaker main body 1, knob part 3 is the on-off electricity of the control circuit breaker main body 1, and the front of circuit breaker main body 1 is provided with fixed shell 2, and the inside of fixed shell 2 is provided with fixed mechanism, and knob part 3 can move in the inside of fixed shell 2, when circuit breaker main body 1 is in the closed state of circuit breaking, knob part 3 is fixed by fixed mechanism, to prevent accidental touch and cause knob part 3 to be turned up, to cause circuit breaker main body 1 to be powered on when being repaired.

[0019] The fixed mechanism comprises a fixed plate 5, the inside of the fixed shell 2 is fixedly connected with the fixed plate 5, the inside of the fixed plate 5 is provided with a guide groove 6, and the inside of the guide groove 6 is provided with a fixed groove 7.

[0020] The toggle part 3 is provided with a toggle switch 13, the toggle switch 13 is elastically provided with a toggle sleeve 4, the two sides of the toggle sleeve 4 are provided with connecting columns 8, the connecting columns 8 are slidably connected with the guide groove 6, one end of the connecting column 8 is fixedly connected with a limiting block 9, and the limiting block 9 is slidably connected with the outer wall of the fixed plate 5.

[0021] The inside of the toggle sleeve 4 is provided with a sliding groove 10, the inside of the sliding groove 10 is detachably provided with a fixed bolt 11, one end of the fixed bolt 11 is threadedly connected with the toggle switch 13 through the toggle sleeve 4, the outside of the fixed bolt 11 is provided with a spring 12, the fixed bolt 11 can realize that the toggle sleeve 4 is mounted on the toggle switch 13, and under the action of the spring 12, the toggle sleeve 4 can elastically slide outside the toggle switch 13.

[0022] The spring 12 always provides a pushing force to the toggle sleeve 4, so that the toggle sleeve 4 is sleeved on the toggle switch 13, and when the toggle sleeve 4 is closely sleeved on the toggle switch 13, the connecting column 8 is clamped in the fixed groove 7, in the normal working state, when the toggle sleeve 4 is sleeved on the toggle switch 13, the bottom of the toggle sleeve 4 does not contact the top of the toggle switch 13, when the circuit breaker main body 1 is powered off, after the toggle switch 13 is rotated downward to the bottom, the bottom of the toggle sleeve 4 contacts the top of the toggle switch 13.

[0023] Specifically, when the staff powers off the circuit breaker main body 1 for maintenance, the toggle part 3 needs to be rotated downward through the toggle switch 13, at this time, the toggle sleeve 4 is driven to move by the toggle switch 13, the connecting column 8 slides downward in the inside of the guide groove 6, when the connecting column 8 slides to the bottom of the guide groove 6, the spring 12 pushes the toggle sleeve 4 to closely contact the toggle switch 13, then the connecting column 8 is clamped into the fixed groove 7, so that the toggle switch 13 is fixed, when the toggle switch 13 needs to be upwardly toggled after the maintenance is completed, the connecting column 8 must be pulled out of the fixed groove 7 and returned to the guide groove 6.

[0024] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" is the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the utility model.

[0025] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implying a number of the indicated technical features, so the features with "first", "second", "third", "fourth" can be explicitly or implicitly include at least one of the features.

[0026] In the present application, unless otherwise expressly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0027] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A molded case circuit breaker, comprising a circuit breaker body (1) and an actuating part (3) rotatably disposed inside the circuit breaker body (1), characterized in that: The circuit breaker body (1) has a fixed shell (2) on its front side. The fixed shell (2) has a fixing mechanism inside it. The actuating part (3) can move inside the fixed shell (2). When the circuit breaker body (1) is in the open circuit closed state, the actuating part (3) is fixed by the fixing mechanism.

2. A molded case circuit breaker according to claim 1, characterized in that: The fixing mechanism includes a fixing plate (5), and the fixing plate (5) is fixedly connected inside the fixing shell (2). The fixing plate (5) has a guide groove (6) inside, and the guide groove (6) has a fixing groove (7) inside.

3. A molded case circuit breaker according to claim 2, characterized in that: The toggle part (3) is provided with a toggle switch (13), and the toggle switch (13) is provided with a toggle sleeve (4) elastically. The toggle sleeve (4) is provided with connecting posts (8) on both sides, and the connecting posts (8) can be slidably connected with the guide groove (6).

4. A molded case circuit breaker according to claim 3, characterized in that: The inside of the toggle sleeve (4) is provided with a sliding groove (10), and a fixing bolt (11) is detachably provided inside the sliding groove (10). One end of the fixing bolt (11) passes through the toggle sleeve (4) and is threadedly connected to the toggle switch (13). A spring (12) is sleeved on the outside of the fixing bolt (11).

5. A molded case circuit breaker according to claim 4, characterized in that: The spring (12) always provides a thrust to the toggle sleeve (4) so ​​that the toggle sleeve (4) is fitted onto the toggle switch (13), and when the toggle sleeve (4) is tightly fitted onto the toggle switch (13), the connecting post (8) will be stuck in the fixing groove (7).

6. A molded case circuit breaker according to claim 5, characterized in that: One end of the connecting column (8) is fixedly connected to a limiting block (9), and the limiting block (9) is slidably connected to the outer wall of the fixing plate (5).

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