CN210380224U

CN210380224U - Short-circuit protector

Info

Publication number: CN210380224U
Application number: CN201921179606.0U
Authority: CN
Inventors: 岳凯
Original assignee: Yiqing Jiahua Beijing Technology Co Ltd
Current assignee: Yiqing Jiahua Beijing Technology Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-04-21
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a short-circuit protector, including end box and lid, install latched device in the end box, fixed mounting has magnetic force circuit breaking mechanism in the end box, install the coupling mechanism who is used for connecting latched device and magnetic force circuit breaking mechanism in the end box. The utility model discloses a first push rod and the second push rod of the frame that opens circuit cut off movable contact and metal rod simultaneously for no electric current passes through in the coupling mechanism, consequently does not produce electric arc phenomenon, simple structure need not to establish special arc extinguishing equipment in addition, and the frame that opens circuit makes metal rod department cut off and reconnect through the absorption and the reseing of magnetic path, need not manually all connect movable contact and metal rod, only need with the movable contact through shift knob and hasp button connect can, the simple operation.

Description

Short-circuit protector

Technical Field

The utility model relates to a line protection field especially relates to short-circuit protection ware.

Background

The short-circuit protector is connected in the circuit and plays a role of protecting the circuit through an instantaneous open circuit, and when a short-circuit phenomenon exists in the circuit, the instantaneous current of the circuit is increased, so that the short-circuit protector acts on a cut-off circuit to protect the safety of electrical appliances at all places.

The existing short-circuit protector is complex in structure, detects the short-circuit condition of a circuit and triggers a circuit breaking mechanism through various intelligent control chips, increases the electric energy loss of the circuit, and is simple in structure, so that electric arcs are generated in the process of breaking the circuit, and the short-circuit protector is burnt.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a short-circuit protector.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

short-circuit protector, including end box and lid, install latched device in the end box, fixed mounting has magnetic force circuit breaking mechanism in the end box, install the coupling mechanism who is used for connecting latched device and magnetic force circuit breaking mechanism in the end box.

Preferably, the locking mechanism comprises a locking button movably inserted on the side wall of the bottom box, a second spring is fixed on the locking button, the other end of the second spring is fixed on the side wall of the bottom box, a switch groove is formed in the side wall of the bottom box, a switch button is rotatably installed in the switch groove, a movable contact is fixedly installed at one end of the switch button in the bottom box, the movable contact is rotatably clamped on the locking end of the locking button, namely after the switch button is tripped due to short circuit, the movable contact is clamped on the locking button through rotation of the switch button, and the switch button can be unlocked through pressing the locking button.

Preferably, magnetic force circuit breaking mechanism includes the insulated column of fixed mounting in the end box, around being equipped with the enameled wire on the insulated column, fixed mounting has spacing slide in the end box, fixed mounting has first spring in the spacing slide, fixed mounting has the magnetic path on the first spring, and magnetic path slidable mounting is in spacing slide, and the magnetic path is located same horizontal straight line with the insulated column, when the short circuit promptly, and short-circuit current is great for the enameled wire is great around the magnetic force of establishing formation on the insulated column, attracts the magnetic path to inhale on the insulated column.

Preferably, the magnetic block is fixedly provided with a circuit breaking frame, the circuit breaking frame is slidably mounted on the inner bottom wall of the bottom box, the circuit breaking frame comprises a first push rod and a second push rod, and the first push rod abuts against the side face of the movable contact.

Preferably, the connecting mechanism comprises a fixing ring and a fixed contact which are fixedly mounted on the inner bottom wall of the bottom box, the fixing ring and the fixed contact are electrically connected with a straight wire, the fixed contact is clamped with the moving contact, the fixing ring is connected with a metal rod in a rotating mode, a spring sleeve is fixedly mounted on the metal rod, the other end of the spring sleeve is fixed on the inner bottom wall of the bottom box, the second push rod abuts against the metal rod, when the magnetic block is attracted to the insulating column, the first push rod and the second push rod of the circuit breaking frame slide along with the magnetic block, so that the moving contact and the metal rod are pushed open to be disconnected, the circuit breaking purpose is achieved, and the two ends are disconnected simultaneously, so that no current exists in the intermediate connecting structure, no electric arc is generated, and arc.

Preferably, the arc card cover is installed to the one end of enameled wire, and the metal bar card is covered at the arc card, internal circuit terminal and external power source terminal are installed respectively to two sides of end box, internal circuit terminal and enameled wire electric connection, electric connection has the elastic wire on the external power source terminal, the other end of elastic wire is fixed and is located one of end box at shift knob, and elastic wire and movable contact electric connection.

The utility model discloses following beneficial effect has:

1. through fixed mounting frame that opens circuit on the magnetic path for the magnetic path drives the frame circuit breaker that opens circuit on being adsorbed on the insulating column because of short-circuit current, and behind the circuit breaker, because the electric current disappears, the magnetic path is pulled back by first spring, thereby makes the frame that opens circuit stop circuit breaker, automatic cutout, automatic recovery, simple structure need not extra control module group.

2. The circuit breaker frame cuts off the movable contact and the metal bar simultaneously in the short circuit cutting process, namely after the circuit breaker frame is cut off, no current passes through the connecting mechanism, the magnetic circuit breaker mechanism and the connecting mechanism do not generate an electric arc phenomenon, the movable contact and the connecting mechanism of the locking mechanism do not generate electric arcs, the arc extinguishing effect is achieved, special arc extinguishing equipment is not needed, and the structure is simple.

To sum up, the utility model discloses a first push rod and the second push rod of the frame that opens circuit cut off movable contact and metal rod simultaneously for no electric current passes through in the coupling mechanism, consequently does not produce electric arc phenomenon, simple structure need not to establish special arc extinguishing equipment in addition, and the frame that opens circuit makes metal rod department cut off and reconnect with reseing through the absorption of magnetic path, need not manually all to connect movable contact and metal rod, only need with the movable contact through shift knob and hasp button connection can, the simple operation.

Drawings

Fig. 1 is a schematic structural diagram of a short circuit protector provided by the present invention;

fig. 2 is a schematic view of an internal structure of the short circuit protector provided by the present invention;

fig. 3 is an enlarged view of a connection structure portion of the short circuit protector provided by the present invention;

fig. 4 is an enlarged view of a part of a latch mechanism of the short circuit protector according to the present invention;

fig. 5 is an enlarged view of the moving contact part of the short circuit protector of the present invention.

In the figure: the device comprises a bottom box 1, a box cover 2, a lock button 3, a switch button 4, a straight wire 5, a fixing ring 6, a metal bar 7, an arc-shaped clamping cover 8, an insulating column 9, an enameled wire 10, a magnet 11, a first spring 12, a limiting slideway 13, a breaking frame 14, an elastic wire 15, an external power supply wiring terminal 16, an internal circuit wiring terminal 17, a spring sleeve 18, a second spring 19, a movable contact 20 and a fixed contact 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-5, the short circuit protector comprises a bottom box 1 and a box cover 2, wherein a locking mechanism is installed in the bottom box 1, a magnetic circuit breaking mechanism is fixedly installed in the bottom box 1, and a connecting mechanism for connecting the locking mechanism and the magnetic circuit breaking mechanism is installed in the bottom box 1.

The locking mechanism comprises a locking button 3 movably inserted on the side wall of the bottom box 1, a second spring 19 is fixed on the locking button 3, the other end of the second spring 19 is fixed on the side wall of the bottom box 1, a switch groove is formed in the side wall of the bottom box 1, a switch button 4 is installed in the switch groove in a rotating mode, a movable contact 20 is fixedly installed at one end of the switch button 4 in the bottom box 1, the movable contact 20 can be rotatably clamped on the locking end of the locking button 3, namely after the switch button 4 is tripped in a short circuit, the switch button 4 rotates to enable the movable contact 20 to be clamped on the locking button 3, and the switch button 4 can be unlocked by pressing the locking button 3.

Magnetic force circuit breaking mechanism includes fixed mounting insulating column 9 in end box 1, it is equipped with enameled wire 10 to wind on the insulating column 9, fixed mounting has spacing slide 13 in end box 1, fixed mounting has first spring 12 in the spacing slide 13, fixed mounting has magnetic path 11 on the first spring 12, and magnetic path 11 slidable mounting is in spacing slide 13, and magnetic path 11 is located same horizontal straight line with insulating column 9, when short circuit promptly, short-circuit current is great, make enameled wire 10 around establishing that the magnetic force that forms on insulating column 9 is great, attract magnetic path 11 to inhale on insulating column 9, fixed mounting has circuit breaking frame 14 on magnetic path 11, and circuit breaking frame 14 slidable mounting is on the interior diapire of end box 1, circuit breaking frame 14 includes first push rod and second push rod, and first push rod supports the side at movable contact 20.

The connecting mechanism comprises a fixing ring 6 and a fixed contact 21 which are fixedly mounted on the inner bottom wall of the bottom box 1, the fixing ring 6 and the fixed contact 21 are electrically connected with a straight wire 5 together, the fixed contact 21 is clamped with a movable contact 20, the fixing ring 6 is connected with a metal rod 7 in a rotating mode, a spring sleeve 18 is fixedly mounted on the metal rod 7, the other end of the spring sleeve 18 is fixed on the inner bottom wall of the bottom box 1, a second push rod abuts against the metal rod 7, when the magnetic block 11 is attracted to the insulating column 9, a first push rod and a second push rod of the circuit breaking frame 14 slide along with the magnetic block 11, the movable contact 20 and the metal rod 7 are pushed open to break, the purpose of breaking a circuit is achieved, the two ends are disconnected simultaneously, the intermediate connecting structure is free of current, no electric arc is generated, and.

Arc card cover 8 is installed to the one end of enameled wire 10, and the metal bar 7 card is on arc card cover 8, and internal circuit terminal 17 and external power source terminal 16 are installed respectively to two sides of end box 1, internal circuit terminal 17 and enameled wire 10 electric connection, and electric connection has elastic wire 15 on the external power source terminal 16, and elastic wire 15's the other end is fixed and is served at shift knob 4 one that is located end box 1, and elastic wire 15 and movable contact 20 electric connection.

When the utility model is used, the power line of the external power supply is connected with the external power supply terminal 16, the internal circuit is connected with the internal circuit terminal 17, the movable contact 20 is unlocked by pressing the lock button 3, the movable contact 20 is clamped on the fixed contact 21 by pushing the switch button 4, the circuit is communicated, when the internal circuit is short-circuited, the current is increased, the current of the enameled wire 10 is increased, namely the magnetic force generated by the enameled wire 10 arranged on the insulating column 9 is increased, the magnetic block 11 is attracted to the insulating column 9, the first spring 12 is stretched, the breaking frame 14 slides together with the magnetic block 11, the movable contact 20 and the metal bar 7 are respectively pushed away by the first push rod and the second push rod, the circuit is short-circuited, in the process, the two ends of the connecting mechanism are suddenly disconnected, no current passes through, no electric equipment is used, and the electric arc phenomenon does not occur on the movable contact 20 and the fixed contact 21, metal bar 7 and arc card cover 8 do not take place electric arc phenomenon, reach the effect of arc extinguishing, and spring housing 18 is tensile, movable contact 20 card is held at the lock of hasp button 3, after the internal circuit outage, the electric current in enameled wire 10 delays to disappear and magnetic force disappears promptly, magnetic path 11 is pulled back by first spring 12, then the first push rod and the second push rod of the frame 14 that opens circuit reset, metal bar 7 rebounds to arc card cover 8 in through spring housing 18, treat the problem solution back, only need press hasp button 3 and make movable contact 20 unblock, then promote shift knob 4 and make movable contact 20 card can the intercommunication circuit on fixed contact 21.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Short-circuit protector, including end box (1) and lid (2), its characterized in that, install latched device in end box (1), fixed mounting has magnetic force circuit breaking mechanism in end box (1), install the coupling mechanism who is used for connecting latched device and magnetic force circuit breaking mechanism in end box (1).

2. The short-circuit protector according to claim 1, wherein the locking mechanism comprises a locking button (3) movably inserted on a side wall of the bottom case (1), a switch groove is formed on the side wall of the bottom case (1), a switch button (4) is rotatably mounted in the switch groove, a movable contact (20) is fixedly mounted at one end of the switch button (4) in the bottom case (1), and the movable contact (20) is rotatably clamped on a locking end of the locking button (3).

3. The short-circuit protector according to claim 2, wherein the magnetic circuit breaking mechanism comprises an insulating column (9) fixedly installed in a bottom box (1), an enameled wire (10) is wound on the insulating column (9), a limiting slide way (13) is fixedly installed in the bottom box (1), a first spring (12) is fixedly installed in the limiting slide way (13), a magnetic block (11) is fixedly installed on the first spring (12), the magnetic block (11) is slidably installed in the limiting slide way (13), and the magnetic block (11) and the insulating column (9) are located on the same horizontal straight line.

4. A short-circuit protector according to claim 3, characterized in that the magnet block (11) is fixedly provided with a breaking frame (14), the breaking frame (14) is slidably mounted on the inner bottom wall of the bottom case (1), the breaking frame (14) comprises a first push rod and a second push rod, and the first push rod abuts against the side surface of the movable contact (20).

5. The short-circuit protector according to claim 4, characterized in that the connecting mechanism comprises a fixing ring (6) and a fixed contact (21) which are fixedly installed on the inner bottom wall of the bottom case (1), the fixing ring (6) and the fixed contact (21) are electrically connected with a straight wire (5) together, the fixed contact (21) is clamped with the movable contact (20), the fixing ring (6) is rotatably connected with a metal rod (7), the metal rod (7) is fixedly installed with a spring sleeve (18), the other end of the spring sleeve (18) is fixed on the inner bottom wall of the bottom case (1), and the second push rod abuts against the metal rod (7).

6. The short circuit protector according to claim 5, wherein an arc-shaped clamping cover (8) is installed at one end of the enameled wire (10), and the metal rod (7) is clamped on the arc-shaped clamping cover (8).