CN111785582A - A fixing and unlocking mechanism of a circuit breaker - Google Patents

Abstract

The invention discloses a fixing and unlocking mechanism of a circuit breaker, which relates to the field of circuit breakers, and comprises a circuit breaker casing, a button and a limiter, the limiter being elastically hingedly installed in the circuit breaker casing and located at the The upper surface of the circuit breaker housing is provided with a window above the front and the upper surface of the button, the upper surface of the limiting member is provided with a locking boss that can pass through the window, and the locking boss has a protruding window to prevent The circuit breaker enters a first state in the cabinet and has a second state retracting into the window to prevent button closing. The invention has the advantages of good assembly reliability and good working stability.

Description

A fixing and unlocking mechanism of a circuit breaker

technical field

The invention relates to the field of circuit breakers, in particular to a fixing and unlocking mechanism of a circuit breaker.

Background technique

As a switch that can provide various protection functions, the circuit breaker can effectively improve the safety and reliability of electrical equipment and power lines. In order to meet the increasingly diverse needs of users, the diversification and miniaturization of circuit breakers is a trend; 1. The existing circuit breakers can be wired directly when they are closed and not installed in place. It is not conducive to the reliable and stable operation of the circuit breaker, and there are potential safety hazards; 2. After the existing circuit breaker is installed in place, there is a risk of being pulled out by mistake under the power-on state, which is not conducive to the reliable operation of the circuit breaker and electrical equipment. There are also security risks.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the background technology, the present invention provides a fixing and unlocking mechanism for a circuit breaker with good assembly reliability and good working stability.

The technical solution adopted in the present invention is: a fixing and unlocking mechanism of a circuit breaker, which includes a circuit breaker casing, a button and a limiting member, the limiting member is elastically hingedly installed in the circuit breaker casing and located in the circuit breaker casing. Above the front and top of the button, a window is opened on the upper surface of the circuit breaker housing, and the upper surface of the limiter is provided with a locking boss that can pass through the window, and the locking boss has a window extending out of the window to prevent circuit breakage. A first state in which the appliance enters the cabinet and a second state in which the switch is retracted into the window to prevent the button from closing.

The limiting member is provided with a rotating shaft, the rotating shaft is rotatably installed in the circuit breaker housing, and the locking boss is located on the front side of the rotating shaft.

The lower surface of the limiting member is provided with a limiting boss, and the front end of the button is provided with a contact boss. When the limiting member retracts into the window, the limiting boss is located on the right side of the contact boss. front.

The circuit breaker casing is provided with an elastic member, one end of the elastic member is fixed on the circuit breaker casing, and the other end is fixed on the limiting member and provides a pre-position for the limiting member to protrude upwards from the window. tight.

The upper surface of the contact boss is provided with a slope for avoiding the limiting member.

The circuit breaker casing is provided with an unlocking buckle at a position behind the limiter, the front end of the unlocking buckle is inserted into the circuit breaker casing, and the rear end of the unlocking buckle is exposed outside the circuit breaker casing. The buckle is provided with an interference portion extending to the front, the upper surface of the front end of the interference portion is a slope surface, the rear end of the limiting piece is an arc surface, and the interference portion has a forward movement and the limiting piece. A first state in which the rear end contacts and drives the limiter to rotate clockwise along the slope surface, and a second state in which it moves backwards away from the limiter.

The unlocking buckle is provided with an elastic positioning portion located on one side of the interference portion, a plurality of positioning grooves corresponding to the elastic positioning portion are arranged in the circuit breaker housing, and the end portion of the elastic positioning portion is arc-shaped noodle.

The rear end of the unlocking buckle is provided with an operating boss for manual pushing, and the operating boss is higher than the upper surface of the circuit breaker housing.

The unlocking buckle is provided with a first positioning surface facing the circuit breaker housing in the vertical direction, the circuit breaker housing is provided with a second positioning surface facing the first positioning surface, and the first positioning surface is opposite to the first positioning surface. The second positioning surfaces are all inclined.

The elastic positioning portions are symmetrically arranged on both sides of the interference portion.

The beneficial effects of the present invention are as follows: the technical solution prevents the circuit breaker from being pulled out after being assembled in place by setting the limiter; when the circuit breaker is in the closed state, the limiter and the button resist and cooperate to prevent the circuit breaker from being installed in place, thereby improving the miniaturization of the circuit breaker. The advantages of assembly reliability and working stability of circuit breakers.

Description of drawings

FIG. 1 is a schematic structural diagram of a fixing and unlocking mechanism of a circuit breaker according to an embodiment of the present invention.

Figure 2 is a top view of the fixing and unlocking mechanism of the circuit breaker.

FIG. 3 is a schematic structural diagram of an unlocking buckle.

FIG. 4 is a schematic diagram of the structure of the limiting member.

FIG. 5 is a schematic structural diagram of the fixing and unlocking mechanism of the circuit breaker in the unlocking position.

Figure 6 is a top view of the securing and unlocking mechanism of the circuit breaker in the unlocked position.

FIG. 7 is a schematic structural diagram of the fixing and unlocking mechanism of the circuit breaker in the locked position and not closed.

FIG. 8 is a schematic structural diagram of the fixing and unlocking mechanism of the circuit breaker in the locked position and closed.

FIG. 9 is a schematic structural diagram of a button.

Detailed ways

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

As shown in the figure, a fixing and unlocking mechanism of a circuit breaker includes a circuit breaker casing 1, a button 2 and a limiting member 3, the limiting member 3 is elastically hingedly installed in the circuit breaker casing 1 and A window 11 is opened on the upper surface of the circuit breaker housing 1 , and a locking boss 31 that can pass through the window 11 is provided on the upper surface of the limiting member 3 . The table 31 has a first state of protruding out of the window 11 to prevent the circuit breaker from entering the cabinet, and a second state of retracting into the window 11 to prevent the button 2 from closing; the technical solution prevents the circuit breaker from being assembled in place by setting a limiter After the circuit breaker is pulled out; in the closed state of the circuit breaker, the stopper cooperates with the button to prevent the circuit breaker from being installed in place, which has the advantages of improving the assembly reliability and working stability of the miniature circuit breaker.

For the front and upper part mentioned in this embodiment, reference can be made to the position distribution in FIG. 1 , and the limiter is located in front of the button and above the button.

The limiting member 3 is provided with a rotating shaft 32, the rotating shaft 32 is rotatably installed in the circuit breaker housing 1, the locking boss 31 is located on the front side of the rotating shaft 32, the rotating The shaft is rotatable. When the stopper is in a horizontal state, as shown in Figure 6, the locking projection is exposed outside the circuit breaker housing through the window. When the stopper is rotated to an inclined state, as shown in Figure 4, the locking projection The stage retraction window is hidden inside the breaker housing.

The lower surface of the limiting member 3 is provided with a limiting boss 33 , and the front end of the button 2 is provided with a contact boss 21 . When the limiting member 3 is retracted into the window 11 , the limiting boss 33 is located at Right in front of the contact boss 21, in this state, the stopper will block the forward route of the button and prevent the button from closing; when the stopper extends out of the window, it will not block the forward route of the button. , the button can be closed, and the structure of the torsion spring and the rotating shaft in this embodiment constitutes the aforementioned elastic hinge structure.

The circuit breaker housing 1 is provided with an elastic member 4 , one end of the elastic member 4 is fixed on the circuit breaker housing 1 , and the other end is fixed on the limiting member 3 to provide the limiting member 3 . For a preload force protruding upward from the window 11, the elastic member adopts a torsion spring, and the movable end of the torsion spring presses on the lower surface of the limiting member to provide an upward preloading force for the limiting member.

The upper surface of the contact boss 21 is provided with an inclined surface 22 for avoiding the limiting member 3. When the limiting member rotates downward, its lower surface is inclined, so in order to ensure that the limiting member is completely retracted into the window. Without interference phenomenon, in this embodiment, a slope for avoidance is machined on the contact boss;

There is another embodiment, which is to dig an avoidance groove on the lower surface of the limiting member to avoid the contact boss, which can also achieve the same technical effect.

The circuit breaker casing 1 is provided with an unlocking buckle 5 at a position behind the limiting member 3 , the front end of the unlocking buckle 5 is inserted into the circuit breaker casing 1 , and its rear end is exposed in the circuit breaker casing 1 . In addition, the unlocking buckle 5 is provided with a resisting portion 51 extending directly forward, the upper surface of the front end of the resisting portion 51 is a slope, the rear end of the limiting member 3 is an arc surface, and the resisting portion 51 has a first state in which it moves forward to contact the rear end of the limiter 3 and drives the limiter 3 to rotate clockwise along the sloped surface, and a second state in which it moves backward and leaves the limiter 3. When the unlocking buckle is pressed inward, the limiter is pushed and rotated, and the limit boss of the limiter blocks the button to prevent the circuit breaker from closing.

The unlocking buckle 5 is provided with an elastic positioning portion 52 located on one side of the abutting portion 51 , and the circuit breaker housing 1 is provided with a plurality of positioning grooves 12 corresponding to the elastic positioning The end of the positioning portion 52 is an arc surface, and the elastic positioning portion 52 is symmetrically arranged on both sides of the abutting portion 51 ; the positioning groove in this embodiment is divided into two gears, which are respectively pressed in and pulled out corresponding to the unlocking buckle. In two states, when the unlocking clasp is pressed into the circuit breaker, the elastic positioning part uses its own elasticity of the plastic material to cross the slope and enter the next positioning groove, and the positioning groove offsets the preset from the limit piece and the elastic piece. Tightening force, so that the contact part overcomes the pre-tightening force of the elastic piece to keep the limit piece in an inclined state, block the button, and prevent the circuit breaker from closing;

When the unlocking buckle is pulled out, the contact part is disengaged from the limiting piece, and the limiting piece is reset by the elastic piece.

The rear end of the unlocking buckle 5 is provided with an operating boss 53 for manual pushing, the operating boss 53 is higher than the upper surface of the circuit breaker housing 1 , and the operating boss is pushed by manual pressing.

The unlocking buckle 5 is provided with a first positioning surface 54 facing the circuit breaker housing 1 in the vertical direction, and the circuit breaker housing 1 is provided with a second positioning surface 13 facing the first positioning surface 54, so The first positioning surface 54 and the second positioning surface 13 are both inclined.

When the circuit breaker is in the open state, the limiter is pressed against the outer casing under the action of the elastic piece, and the locking boss of the limiter is exposed outside the circuit breaker shell; push the circuit breaker into the cabinet, and the locking boss of the limiter is blocked. The cabinet is pressed down, and the circuit breaker is pushed into the cabinet. When the circuit breaker is pushed in place, the locking boss of the limiter is stuck in the through hole on the cabinet under the action of the elastic member, and when the circuit breaker is installed in place, push the button to close. the circuit breaker can be closed;

If the circuit breaker is not installed in place, the locking boss of the limiter is pressed down by the cabinet, the limiter boss of the limiter is against the button, and the button cannot be closed.

When the circuit breaker is not inserted into the cabinet and is in the closed state, the limiting boss of the limiter is pressed on the contact boss of the button; the locking boss is exposed outside the window, when the circuit breaker is pushed into the cabinet, the locking boss Acts as a block, preventing the circuit breaker from advancing into the cabinet.

When dismantling the circuit breaker, you need to press the unlocking buckle inward. At this time, the limiter rotates under the push of the unlocking buckle, and the locking boss retracts the window. When the unlocking buckle is stuck and cannot be pushed forward (that is, the first When the first positioning surface is in contact with the second positioning surface), the limit boss of the limiter rotates downward, the limit boss of the limiter is blocked in front of the button contact boss, and the button cannot be closed. The circuit breaker is pulled out of the enclosure.

When the circuit breaker needs to be re-installed, it is necessary to insert a tool between the unlocking buckle and the circuit breaker housing, and then use a tool to push the unlocking buckle to the outside to push out the unlocking buckle, so that the unlocking buckle is in a free state. The horizontal direction of the unlocking clip is limited by the positioning slot in the circuit breaker housing, and it cannot move back.

In the description of the present invention, it should be noted that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", " The orientations or positional relationships indicated by vertical, horizontal, top, bottom, inside, and outside are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying It is described, rather than indicated or implied, that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. Also, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

Note to all technicians: Although the present invention has been described according to the above-mentioned specific embodiments, the inventive idea of the present invention is not limited to this invention, and any modification using the idea of the present invention will be included in the protection scope of this patent right.

Claims (10)

1. A fixing and unlocking mechanism of a circuit breaker is characterized in that: it includes circuit breaker casing (1), button (2) and locating part (3), locating part (3) elasticity is articulated to be installed in circuit breaker casing (1) and be located the preceding top of button (2), window (11) have been seted up to circuit breaker casing (1) upper surface, locating part (3) upper surface is equipped with and can passes locking boss (31) of window (11), locking boss (31) have and stretch out window (11) prevent that the circuit breaker from getting into the first state of rack and have the withdrawal prevent in window (11) the second state that button (2) were closed a floodgate.

2. The circuit breaker securing and unlocking mechanism according to claim 1, wherein: the locating part (3) is equipped with axis of rotation (32), rotatable the installing of axis of rotation (32) in circuit breaker casing (1), locking boss (31) are located the front side of axis of rotation (32).

3. The circuit breaker securing and unlocking mechanism according to claim 1, wherein: the lower surface of the limiting part (3) is provided with a limiting boss (33), the front end of the button (2) is provided with a contact boss (21), and when the limiting part (3) retracts into the window (11), the limiting boss (33) is located right ahead of the contact boss (21).

4. The circuit breaker securing and unlocking mechanism according to claim 1, wherein: be equipped with elastic component (4) in circuit breaker casing (1), elastic component (4) one end is fixed on circuit breaker casing (1), and the other end is fixed on locating part (3) and for locating part (3) provide the pretightning force that upwards stretches out window (11).

5. The circuit breaker securing and unlocking mechanism according to claim 1, wherein: the upper surface of the contact boss (21) is provided with an inclined surface (22) used for avoiding the limiting part (3).

6. The circuit breaker securing and unlocking mechanism according to claim 1, wherein: breaker housing (1) is equipped with unblock buckle (5) in the position at locating part (3) rear, unblock buckle (5) front end inserts in breaker housing (1), and its rear end reveals outside breaker housing (1), unblock buckle (5) are equipped with conflict portion (51) that extend to dead ahead, the upper surface of conflict portion (51) front end is the ramp surface, the rear end of locating part (3) is the cambered surface, conflict portion (51) have forward motion with the rear end contact of locating part (3) drives along the ramp surface locating part (3) clockwise rotation's first state and backward motion break away from the second state of locating part (3).

7. The circuit breaker securing and unlocking mechanism according to claim 6, wherein: unblock buckle (5) are equipped with and are located elasticity location portion (52) of conflict portion (51) one side, be equipped with in circuit breaker casing (1) a plurality of with constant head tank (12) that elasticity location portion (52) correspond, the tip of elasticity location portion (52) is the cambered surface.

8. The circuit breaker securing and unlocking mechanism according to claim 6, wherein: the rear end of unblock buckle (5) is equipped with operation boss (53) that are used for artifical promotion, operation boss (53) are higher than circuit breaker casing (1) upper surface.

9. The circuit breaker securing and unlocking mechanism according to claim 6, wherein: unblock buckle (5) are equipped with first locating surface (54) towards circuit breaker casing (1) on vertical direction, circuit breaker casing (1) is equipped with second locating surface (13) just to first locating surface (54), first locating surface (54) all slope with second locating surface (13) and set up.

10. The circuit breaker securing and unlocking mechanism according to claim 7, wherein: the elastic positioning parts (52) are symmetrically arranged on two sides of the interference part (51).

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