CN210575791U - External circuit breaker of electric energy meter - Google Patents
External circuit breaker of electric energy meter Download PDFInfo
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- CN210575791U CN210575791U CN201921958253.4U CN201921958253U CN210575791U CN 210575791 U CN210575791 U CN 210575791U CN 201921958253 U CN201921958253 U CN 201921958253U CN 210575791 U CN210575791 U CN 210575791U
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- circuit breaker
- contact
- contact support
- casing
- external circuit
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Abstract
The utility model discloses an external circuit breaker of electric energy meter, including P utmost point outage unit, N utmost point outage unit and the coincidence floodgate mechanism that sets up side by side in proper order, P utmost point outage unit includes operating device, first moving contact, dropout pull rod and first pair of golden component, operating device includes rotatable installation's hasp and first contact carrier, the first moving contact is installed on first contact carrier, the dropout pull rod has first end and second end, first end links to each other with the hasp, the second end links to each other with first pair of golden component; the N-pole circuit breaking unit comprises a second contact support, a second moving contact and a second bimetallic element, wherein the second contact support, the second moving contact and the second bimetallic element are rotatably mounted; the second end of the tripping pull rod is also connected with a second bimetallic element, and the first bimetallic element and the second bimetallic element are insulated. The utility model provides an external circuit breaker of electric energy meter is rational in infrastructure, divides disconnected quick reliable, has fine practicality.
Description
Technical Field
The utility model relates to an external circuit breaker of electric energy meter belongs to circuit breaker structural design field.
Background
According to the intelligent requirement of the power supply network in China, the national power grid company requires the intellectualization of the power supply network, so that a terminal actuating mechanism of the power supply network, namely a small-sized breaker, is required to execute an upper end signal to have the functions of tripping and closing. Therefore, the current development trend of the miniature circuit breaker is that besides the traditional manual switching-on and switching-off and overcurrent and overload automatic tripping functions, the miniature circuit breaker also needs to have automatic switching-on and switching-off and reclosing functions so as to realize remote control, and particularly, the miniature circuit breaker is combined with an intelligent electric meter to realize the functions of automatic arrearage tripping, power failure, automatic charging switching-on and power transmission. The P pole circuit breaking unit and the N pole circuit breaking unit in the existing external circuit breaker of the 1P + N electric energy meter are respectively provided with an operating mechanism and a thermal tripping device, the two operating mechanisms are linked, the thermal tripping device is usually a bimetallic element, the two bimetallic elements are respectively connected with a lock catch in the corresponding operating mechanism through a tripping pull rod, when one circuit breaking unit is overloaded, tripping occurs in the circuit breaking unit firstly, but the operating mechanism in the other circuit breaking unit is tripped passively under the linkage action, so that the moving contacts in the two circuit breaking units are not synchronized in action and break, and the breaking performance of the circuit breaker is influenced.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims at providing a divide external circuit breaker of electric energy meter that the breaking performance is good.
Realize the utility model discloses the technical scheme of purpose is:
an external circuit breaker of an electric energy meter comprises a P pole circuit breaking unit, an N pole circuit breaking unit and a reclosing mechanism which are sequentially arranged in parallel;
the P pole circuit breaker unit comprises an operating mechanism, a first moving contact, a tripping pull rod and a first bimetal element, wherein the operating mechanism comprises a lock catch and a first contact support which are rotatably installed;
the N-pole circuit breaking unit comprises a second contact support, a second moving contact and a second bimetallic element, wherein the second contact support, the second moving contact and the second bimetallic element are rotatably mounted;
the second end of the tripping pull rod is also connected with the second bimetallic element at the same time, and the first bimetallic element is insulated from the second bimetallic element.
In the above technical solution, the first contact support and the second contact support are connected through at least two connecting shafts.
In the above technical scheme, the tripping pull rod is made of an insulating material.
In the above technical solution, the trip rod is an assembly of a metal member and an insulating member.
In the above technical scheme, the reclosing mechanism further comprises a casing formed by splicing a first casing, a middle casing, a mechanism seat and a second casing which are sequentially connected, the P-pole circuit breaking unit is arranged between the first casing and the middle casing, the N-pole circuit breaking unit is arranged between the middle casing and the mechanism seat, a through hole for the second end of the tripping pull rod to pass through is formed in the middle casing, and the reclosing mechanism is arranged between the mechanism seat and the second casing.
The utility model discloses has positive effect: the utility model provides an when the external circuit breaker of electric energy meter used, arbitrary two golden components in P utmost point circuit break unit and the N utmost point circuit break unit take place when crooked because of the circuit overload, thereby can both drive the tripping operation dropout of the hasp action among the operating device in the P utmost point circuit break unit through the dropout pull rod, because first contact support and second contact leg joint can synchronous motion, consequently first moving contact and second moving contact can realize synchronous quick branch with corresponding static contact separation simultaneously and divide absolutely, divide absolutely reliably, and can save one set of operating device, the product structure has been simplified.
Drawings
Fig. 1 is a perspective view of a circuit breaker according to the present invention;
fig. 2 is a schematic structural diagram of a reclosing mechanism in the circuit breaker of fig. 1;
fig. 3 is a schematic structural view of a P-pole breaking unit in the circuit breaker of fig. 1;
fig. 4 is a schematic structural diagram of an N-pole breaking unit in the circuit breaker of fig. 1;
fig. 5 is a schematic structural diagram of the P-pole breaking unit and the N-pole breaking unit of the circuit breaker shown in fig. 1 when they are matched;
FIG. 6 is a schematic structural view of the middle shell of the present invention;
fig. 7 is a schematic structural view of the middle release pull rod of the present invention.
The reference symbols shown in the figures are: 1. a housing; 10. a middle shell; 101-punching; 11. a first housing; 12. a mechanism seat; 13. a second housing; 2. a P pole breaking unit; 21. an operating mechanism; 211. a first contact holder; 212. locking; 22. a first moving contact; 23. tripping the pull rod; 24-a first gold double element; 3. an N-pole open circuit unit; 31. a second contact holder; 32. a second gold double element; 33-a second movable contact; 4. a reclosing mechanism; 5. and (7) connecting the shafts.
Detailed Description
The following specific structure of the external circuit breaker of the electric energy meter of the utility model is described in combination with the attached drawings of the specification:
an external circuit breaker of an electric energy meter is shown in fig. 1 to 6 and comprises a P pole circuit breaking unit 2, an N pole circuit breaking unit 3 and a reclosing mechanism 4 which are sequentially arranged in parallel; the P-pole breaker unit 2 comprises an operating mechanism 21, a first movable contact 22, a trip rod 23 and a first bimetal element 24, wherein the operating mechanism 21 comprises a lock catch 212 and a first contact support 211 which are rotatably mounted, the first movable contact 22 is mounted on the first contact support 211, the trip rod 23 has a first end and a second end which are opposite, the first end is connected with the lock catch 212, and the second end is connected with the first bimetal element 24; the N-pole disconnecting unit 3 comprises a second contact support 31, a second movable contact 33 and a second bimetallic element 32 which are rotatably mounted, the second movable contact 33 is fixed on the second contact support 31, and the second contact support 31 is connected with the first contact support 211 and keeps synchronous rotation; the second end of the trip rod 23 is also connected to the second bimetal 32, and the first bimetal 24 is insulated from the second bimetal 32, so as to prevent the first bimetal 24 from being conducted to the second bimetal 32 to cause a short circuit. The utility model provides an when the external circuit breaker of electric energy meter used, arbitrary two golden components in P utmost point circuit-breaking unit 2 and the N utmost point circuit-breaking unit 3 when the circuit transships and takes place the bending, thereby can both drive the hasp 212 action tripping operation dropout in the operating device 21 in the P utmost point circuit-breaking unit 2 through tripping pull rod 23, because first contact support 211 is connected with second contact support 31 and can synchronous motion, consequently first moving contact 22 can realize synchronous quick branch with corresponding static contact separation simultaneously with second moving contact 33 and divide absolutely reliably, and can save one set of operating device 21, the product structure has been simplified. The operating mechanism 21 in this embodiment may adopt an operating mechanism 21 in the prior art, for example, a structure disclosed in patent document CN205384995U, and details of the structure are not described in this embodiment.
In this embodiment, the first contact holder 211 and the second contact holder 31 are connected by at least two connecting shafts 5.
The trip rod 23 in this embodiment is made of an insulating material, such as a plastic material; or the tripping rod 23 is an assembly of a metal part and an insulating part (as shown in fig. 7), the assembly is an assembly or is an integral part molded by injection, and the tripping rod 23 made of fully insulating or partially insulating material is used for insulating the first bimetallic element and the second bimetallic element, so that the situation that the tripping rod 23 made of a fully metal part connects the first bimetallic element 24 and the second bimetallic element 32 to cause short circuit when in use is avoided.
In this embodiment, the circuit breaker further includes a casing formed by splicing a first casing 11, a middle casing 10, a mechanism base 12, and a second casing 13, which are sequentially connected, the P-pole circuit breaking unit 2 is disposed between the first casing 11 and the middle casing 10, the N-pole circuit breaking unit 3 is disposed between the middle casing 10 and the mechanism base 12, the middle casing 10 is provided with a through hole 101 through which the second end of the trip rod 23 passes, and the reclosing mechanism 4 is disposed between the mechanism base 12 and the second casing 13.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.
Claims (5)
1. An external circuit breaker of an electric energy meter comprises a P-pole circuit breaking unit (2), an N-pole circuit breaking unit (3) and a reclosing mechanism (4) which are arranged in parallel in sequence;
the P-pole circuit breaker unit (2) comprises an operating mechanism (21), a first movable contact (22), a tripping pull rod (23) and a first bimetal element (24), wherein the operating mechanism (21) comprises a lock catch (212) and a first contact support (211) which are rotatably mounted, the first movable contact (22) is mounted on the first contact support (211), the tripping pull rod (23) is provided with a first end and a second end which are opposite, the first end is connected with the lock catch (212), and the second end is connected with the first bimetal element (24);
the N-pole circuit breaker unit (3) comprises a second contact support (31), a second moving contact (33) and a second bimetallic element (32), wherein the second moving contact (33) is rotatably mounted, the second contact support (31) is fixed on the second contact support (33), and the second contact support (31) is connected with the first contact support (211) and keeps rotating synchronously;
the tripping device is characterized in that the second end of the tripping pull rod (23) is also connected with the second bimetal (32) at the same time, and the first bimetal (24) is insulated from the second bimetal (32).
2. The external circuit breaker according to claim 1, characterized in that said first contact support (211) is connected to said second contact support (31) by at least two connection shafts (5).
3. The external circuit breaker according to claim 1, wherein said trip rod (23) is made of insulating material.
4. The external circuit breaker according to claim 1, characterized in that said trip rod (23) is a combination of a metallic piece and an insulating piece.
5. The external circuit breaker of electric energy meter according to any one of claims 1 to 4, further comprising a casing formed by splicing a first casing (11), a middle casing (10), a mechanism seat (12) and a second casing (13) which are connected in sequence, wherein the P-pole circuit breaking unit (2) is arranged between the first casing (11) and the middle casing (10), the N-pole circuit breaking unit (3) is arranged between the middle casing (10) and the mechanism seat (12), the middle casing (10) is provided with a through hole (101) for passing through the second end of the tripping pull rod (23), and the reclosing mechanism (4) is arranged between the mechanism seat (12) and the second casing (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921958253.4U CN210575791U (en) | 2019-11-13 | 2019-11-13 | External circuit breaker of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921958253.4U CN210575791U (en) | 2019-11-13 | 2019-11-13 | External circuit breaker of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210575791U true CN210575791U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921958253.4U Active CN210575791U (en) | 2019-11-13 | 2019-11-13 | External circuit breaker of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210575791U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701013A (en) * | 2019-10-23 | 2021-04-23 | 北京京人电器有限公司 | Switch device |
-
2019
- 2019-11-13 CN CN201921958253.4U patent/CN210575791U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701013A (en) * | 2019-10-23 | 2021-04-23 | 北京京人电器有限公司 | Switch device |
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