CN213845185U

CN213845185U - Upper-in and upper-out type leakage protection circuit breaker

Info

Publication number: CN213845185U
Application number: CN202023116015.4U
Authority: CN
Inventors: 陈友; 刘继勇
Original assignee: Zhongshan Keke Electrical Appliance Co ltd
Current assignee: Zhongshan Keke Electrical Appliance Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-07-30
Anticipated expiration: 2030-12-22

Abstract

The utility model provides an upper inlet and upper outlet type leakage protection circuit breaker, include: the circuit breaker unit and the leakage protection unit are arranged in the second shell; the second shell is provided with a wire inlet end and a wire outlet end, and the wire inlet end and the wire outlet end are positioned on the same side of the shell; the incoming line end is electrically connected with the movable contact of the circuit breaker unit, the outgoing line end is electrically connected with one end of a main conductor of the electric leakage protection unit, the other end of the main conductor is electrically connected with an electrode of the circuit breaker unit, and the outgoing line end is also electrically connected with a detection controller of the electric leakage protection unit. The utility model discloses when earth leakage protection circuit breaker is as master switch, all locate the homonymy of casing with inlet wire end and appearance end, can make the connection route of branch switch shortest, most direct, and do not occupy other valuable spaces of unnecessary, have the line simply, occupation space is little, the characteristics that the security is good.

Description

Upper-in and upper-out type leakage protection circuit breaker

Technical Field

The utility model relates to an electrical switch control technical field especially relates to an enterprising go up out formula earth leakage protection circuit breaker.

Background

In the prior art, as a circuit protection device, in order to protect a circuit from an electric leakage fault, an electric leakage protection circuit breaker must be used for protection.

The earth leakage circuit breaker in the prior art is a monopole, a monopole + neutral, a dipole, a tertiary or a quadrupole.

Referring to fig. 1, the conventional earth leakage protection circuit breaker includes a first housing 1, and a circuit breaker unit 14 and an earth leakage protection unit 15 disposed in the first housing 1.

Referring to fig. 3, the breaker unit 14 includes: the device comprises a contact actuating mechanism 4, a magnetic release 5, an electrode 6, an arc extinguishing cover 7 and a handle 8; the contact actuating mechanism 4 includes a stationary contact 401 and a movable contact 402, and a dial groove 801 is provided on the handle 8.

Referring to fig. 4-5, the leakage protection unit 15 includes: the trip device comprises a trip coil 9, a trip handle 10, a trip mechanism 11, a spring push rod 12 and a detection controller 13; the release lever 10 is provided with a linkage shift lever 1001.

Referring to fig. 2 and 6-7, two opposite sides of the first housing 1 are provided with a wire inlet end 2 and a breaker wire outlet end 33, the wire inlet end 2 is electrically connected to the moving contact 402, the stationary contact 401 is electrically connected to one end of the electromagnetic coil of the magnetic trip 5, the other end of the electromagnetic coil of the magnetic trip 5 is electrically connected to the electrode 6, the electrode 6 is located in the breaker wire outlet end 33, the wire pressing frame of the breaker wire outlet end 33 electrically presses and connects one end of the main conductor 21 to the electrode 6, and the other end of the main conductor 21 penetrating through the trip coil 9 is electrically connected to the wire outlet end 3.

The breaker outlet end 33 is also electrically connected with the power supply end of the detection controller 13, and the control end of the detection controller 13 is electrically connected with the spring push rod 12.

The trip coil 9 is further provided with an induction signal line, and the induction signal line is electrically connected with the detection controller 13.

The handle 8 is juxtaposed with the trip lever 10, and the linked shift lever 1001 is caught on the shift groove 801.

When the handle 8 is pushed upward, the contact operating mechanism 4 operates to bring the fixed contact 401 into contact with the movable contact 402, and the circuit breaker unit is electrically connected.

When the handle 8 moves upwards, the shifting groove 801 drives the linkage shifting rod 1001 to move along, so that the tripping handle 10 is driven to move upwards, the spring of the tripping mechanism 11 is in an energy storage state, and preparation is provided for the protection action of the leakage protection unit when leakage current is generated in a main load circuit.

When leakage current is generated in the main load circuit, induced current is generated on the trip coil 9, and after the detection controller 13 detects the induced current, a control signal is sent to the spring push rod 12 to make the spring push rod 12 act to drive the trip mechanism 11 to rotate, so that the trip handle 10 and the handle 8 are sequentially driven to act, and finally the static contact 401 and the movable contact 402 of the contact action mechanism 4 are triggered to separate, and the power supply from the leakage protection unit to a rear-end load is disconnected.

Referring to fig. 2, taking a bipolar example, by adopting such a scheme, the incoming line end is above the earth leakage protection breaker, the outgoing line end is below the earth leakage protection breaker, and the position of the incoming line end and the outgoing line end on the port is arranged, so that the terminal circuit protection device is practical for directly controlling the load. However, when the earth leakage circuit breaker is used as a main switch in a two-stage or multi-stage protection circuit, the arrangement of the top-in and bottom-out ports has many disadvantages. The upper wire inlet end of the main switch is led in a power line, the lower wire outlet end is led out a wire, a roadway is reserved on the outer side surface, the back surface or the inner side of the main switch for the wire to be led out, then the wire is wound above the main switch, and then the wire is led in and connected with the wire inlet end of the branch switch. The branch switch comprises other circuit breakers and earth leakage protection circuit breakers.

This causes the following problems: the connecting wire has the advantages of large number of connecting wires, large connecting workload, high connecting technical requirement, low connecting speed, large connecting space occupation amount, poor aesthetic degree after connection, poor batch connection consistency, large wire using amount, high comprehensive production cost, poor connecting effect, low safety, more fault points and easy influence on electrical stability by vibration.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, an object of the utility model is to provide an go up out formula earth leakage protection circuit breaker for the incoming line end and the leading-out terminal of the earth leakage protection ware of solving among the prior art are located the both sides of casing, lead to that the connecting wire is with high costs, connection time is with high costs, connect that manual differentiation is big, the space occupies with high costs, production efficiency is low, tie point poor stability's problem.

To achieve the above and other related objects, the present invention provides an upper-inlet and upper-outlet leakage protection circuit breaker, including: the circuit breaker unit and the leakage protection unit are arranged in the second shell;

the second shell is provided with a wire inlet end and a wire outlet end, and the wire inlet end and the wire outlet end are positioned on the same side of the shell;

the incoming line end is electrically connected with the movable contact of the circuit breaker unit, the outgoing line end is electrically connected with one end of a main conductor of the electric leakage protection unit, the other end of the main conductor is electrically connected with an electrode of the circuit breaker unit, and the outgoing line end is also electrically connected with a detection controller of the electric leakage protection unit.

In an embodiment of the present invention, the height difference between the incoming line end and the outgoing line end to the bottom of the housing is the same.

In an embodiment of the present invention, the height difference between the incoming line end and the outgoing line end to the bottom of the housing is different.

In an embodiment of the present invention, the incoming line end is provided with a line pressing frame, the line pressing frame of the incoming line end is electrically connected to the moving contact of the circuit breaker unit, and the external power incoming line is pressed into the line pressing frame of the incoming line end.

In an embodiment of the present invention, the wire end is provided with a wire pressing frame, and the external wire is pressed into the wire pressing frame of the wire end.

In an embodiment of the present invention, the number of poles of the upper-inlet and upper-outlet type earth leakage protection circuit breaker is a single pole.

In an embodiment of the present invention, the number of the incoming line end is one, the number of the outgoing line ends is two, the incoming line end is corresponding to one of the outgoing line ends, and the other of the outgoing line ends is used for connecting with an external zero line.

In an embodiment of the present invention, the number of poles of the upper-inlet and upper-outlet type earth leakage protection circuit breaker is monopole + zero line, dipole, third-level or quadrupole.

In an embodiment of the present invention, the incoming line end reaches the quantity of the outgoing line end and the pole number of the upper-inlet upper-outlet type leakage protection circuit breaker are matched, and the incoming line end corresponds to the outgoing line end one-to-one.

As described above, the utility model discloses an upper-inlet upper-outlet type earth leakage protection circuit breaker has following beneficial effect: when the earth leakage protection circuit breaker is used as a main switch, the incoming line end and the appearance end are arranged on the same side of the shell, so that the wiring complexity is reduced, the number of the connecting wires is small, the workload of the connecting wires is reduced, the technical requirements of connection are reduced, high-speed connection can be realized, the occupied space is small, the attractiveness is high, the batch connection consistency is good, the using amount of the wires is small, the comprehensive production cost is low, the connection effect is good, the safety is high, the fault points are few, the influence of vibration is avoided, and the electrical stability is good.

Drawings

Fig. 1 is a perspective view showing an external structure of a bipolar earth leakage circuit breaker disclosed in the prior art.

Fig. 2 shows a schematic internal wiring diagram of a bipolar earth leakage circuit breaker as disclosed in the prior art.

Fig. 3 is a sectional view showing an internal structure of a circuit breaker unit disclosed in the related art.

Fig. 4 shows a cross-sectional view of the internal structure of a bipolar earth leakage protection unit disclosed in the prior art.

Fig. 5 shows a cross-sectional view of the internal structure of a quadrupole leakage protection unit disclosed in the prior art.

Fig. 6 shows a cross-sectional view of the internal structure of the line connection when the bipolar breaker unit disclosed in the prior art is mated with the bipolar earth leakage protection unit.

Fig. 7 is a sectional view showing the internal structure of the line connection when the four-pole breaker unit disclosed in the prior art is mated with the four-pole earth leakage protection unit.

Fig. 8 is a perspective view illustrating an external structure of the bipolar upper-inlet and upper-outlet leakage protector disclosed in the embodiment of the present invention.

Fig. 9 is a schematic diagram of the internal wiring of the bipolar top-in top-out earth leakage protector disclosed in the embodiment of the present invention.

Fig. 10 is a perspective view showing an external structure of a single-pole top-in and top-out earth leakage protector disclosed in an embodiment of the present invention.

Fig. 11 is a sectional view showing an internal structure of a circuit breaker unit disclosed in an embodiment of the present invention.

Fig. 12 is a cross-sectional view showing an internal structure of the earth leakage protection unit disclosed in the embodiment of the present invention.

Fig. 13 shows a cross-sectional view of the internal structure of the line connection when the bipolar circuit breaker unit disclosed in the embodiment of the present invention is mated with the bipolar leakage protection unit.

Fig. 14 shows a cross-sectional view of the internal structure of the circuit connection when the four-pole circuit breaker unit and the four-pole earth leakage protection unit are combined as disclosed in the embodiment of the present invention.

Fig. 15 is a schematic diagram illustrating the connection of the upper-inlet and upper-outlet earth leakage circuit breaker and the branch switch disclosed in the embodiment of the present invention.

Element number description:

1-a first housing; 2-a wire inlet end; 3-a wire outlet end; 4-a contact actuation mechanism; 5-magnetic release; 6-an electrode; 7-arc extinguishing chamber;

8-a handle; 9-a trip coil; 10-a release handle; 11-a trip mechanism; 12-a spring pusher; 13-a detection controller;

14-a circuit breaker unit; 15-a leakage protection unit; 16-a second housing; 17-a partial switch; 18-power supply inlet wire;

19-external wiring; 21-a main conductor; 33-breaker outlet terminal;

401 — stationary contact; 402-moving contact; 801-groove shifting; 1001-linkage deflector rod.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

For traditional earth leakage circuit breaker, the utility model discloses remove the leading-out terminal to the same one side of inlet wire end, only changed the mould of casing to prolonged the length of the inside wire of being connected with the leading-out terminal, but their function does not change separately, earth leakage circuit breaker's short circuit control ability, overload protection control ability, the function of opening circuit do not produce the change influence, also do not produce the variability influence to earth leakage protection's function and precision, specific theory:

referring to fig. 8-9, the present invention provides an upper-inlet and upper-outlet type leakage protection circuit breaker, comprising: a second case 16, and a circuit breaker unit 14 and a leakage protection unit 15 provided in the second case 16; the second housing 16 is an insulating housing.

The second shell 16 is provided with a wire inlet end 2 and a wire outlet end 3, the wire inlet end 2 and the wire outlet end 3 are arranged on the same side of the second shell 16, the wire inlet end 2 and the wire outlet end 3 are insulated from each other, and the height difference from the wire inlet end 2 and the wire outlet end 3 to the bottom of the second shell 16 may be the same or different.

The structure and the operation principle of the circuit breaker unit 14 and the earth leakage protection unit 15 in this embodiment are the same as those in the prior art, and are not described herein again.

Referring to fig. 11, the incoming line terminal 2 is further provided with a wire frame, which is electrically connected to the moving contact 402 of the breaker unit 14, and into which the external power incoming line 18 is crimped.

Referring to fig. 12, the wire outlet end 3 is provided with a wire pressing frame, and the external connection wire 19 is pressed into the wire pressing frame. The external connection 19 may be an external wire or a bus bar.

It should be noted that the utility model discloses an upward go out formula earth leakage protection circuit breaker on enterprising can be monopole, monopole + zero line, bipolar, tertiary or quadrupole, and the quantity of inlet wire end and leading-out terminal matches with the number of poles of upward go out formula earth leakage protection circuit breaker, and inlet wire end and leading-out terminal one-to-one.

Referring to fig. 10, when the circuit breaker unit is a single pole, the zero line end is directly led into the leakage protection unit through a wire, and the incoming line end of the zero line is not arranged on the circuit breaker unit; the lead is an overhanging version of the main lead 21, the input of the leading-out terminal 3 is two, the zero line is led out from one leading-out terminal 3, and the other leading-out terminal 3 corresponds to the leading-in terminal.

Referring to fig. 13-14, the power inlet wire 18 is connected to the breaker unit 14 from the upper inlet wire end 2, the earth leakage protection unit 15 from the inside of the housing, and the rear branch switch 17 from the upper outlet wire end 3.

By adopting the scheme, the outgoing line end is directly connected with the external lead or the busbar from the upper part, so that the connection path to the branch switch is shortest and most direct, unnecessary other precious space is not occupied, and the device has the characteristics of simple connection, small occupied space, high attractiveness, low cost and good safety.

The upper-inlet and upper-outlet type leakage protection circuit breaker is suitable for being used only as a main switch control occasion and not used as a branch switch. The outlet end 3 is provided with a special bus bar for compression joint or wire connection, and is operated by professional electrical equipment personnel, so that wrong wires are not easy to connect.

Referring to fig. 15, an upper-inlet and upper-outlet earth leakage protection circuit breaker and a branch switch 17 are respectively arranged from left to right; wherein, the number of the branch switches 17 may be plural.

The power inlet wire 18 inserts inlet wire end 2, outlet wire end 3 passes through external connection 19 and is connected with the inlet wire end of the branch switch 17 of rear end, in this embodiment, inlet wire end 2 and outlet wire end 3 all are located the top of second casing 16, adopt this kind of scheme, avoided among the prior art, as last formula earth leakage protection circuit breaker of going up as master switch, it need follow master switch's lateral surface, back or inboard reservation tunnel to go out, then wind the top of master switch again, cut in branch switch 17 again, cause the complexity of wiring to increase, manufacturing cost aggravates, further reduction production efficiency, do not unity, the production management degree of difficulty increases.

To sum up, the utility model discloses an upper-inlet upper-outlet type leakage protection circuit breaker, when leakage protection circuit breaker is as master switch, all locate the master switch top with the incoming line end with the appearance end, reduced the complexity of wiring, the line is small in quantity, the line work load reduces, connect technical requirement and reduce, can connect at a high speed, the space occupies for a short time, the pleasing to the eye degree is high, the batch connection uniformity is good, the wire use amount is little, synthesize low in production cost, the connection effect is good, the security is high, the fault point is few, be difficult for receiving the vibration influence, electrical stability is good. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. An upper-inlet and upper-outlet type leakage protection circuit breaker is characterized by comprising: the circuit breaker unit and the leakage protection unit are arranged in the second shell;

2. The top-entry, top-exit, earth leakage protection circuit breaker as recited in claim 1, wherein: the height difference from the wire inlet end and the wire outlet end to the bottom of the shell is the same.

3. The top-entry, top-exit, earth leakage protection circuit breaker as recited in claim 1, wherein: the height difference from the wire inlet end and the wire outlet end to the bottom of the shell is different.

4. The top-entry, top-exit, earth leakage protection circuit breaker as recited in claim 1, wherein: the incoming line end is provided with a line pressing frame, the line pressing frame of the incoming line end is electrically connected with the movable contact of the circuit breaker unit, and an external power supply incoming line is connected into the line pressing frame of the incoming line end in a pressing mode.

5. The top-entry, top-exit, earth leakage protection circuit breaker as recited in claim 1, wherein: and the wire outlet end is provided with a wire pressing frame, and the external wire is pressed in the wire pressing frame of the wire outlet end.

6. The top-entry, top-exit, earth leakage protection circuit breaker as recited in claim 1, wherein: the pole number of the upper-inlet and upper-outlet type leakage protection circuit breaker is a single pole.

7. The top-entry, top-exit, earth leakage protection circuit breaker as recited in claim 6, wherein: the number of the wire inlet ends is one, the number of the wire outlet ends is two, the wire inlet ends correspond to one wire outlet end, and the other wire outlet end is used for being connected with an external zero line.

8. The top-entry, top-exit, earth leakage protection circuit breaker as recited in claim 1, wherein: the pole number of the upper-inlet and upper-outlet type leakage protection circuit breaker is a single pole plus a zero line, a double pole, a three-level or a four-level.

9. The top-entry and top-exit electrical leakage protection circuit breaker of claim 8, wherein: the number of the wire inlet ends and the number of the wire outlet ends are matched with the pole number of the upper-inlet upper-outlet type leakage protection circuit breaker, and the wire inlet ends correspond to the wire outlet ends one to one.