CN113140431A - Operating mechanism of miniature circuit breaker - Google Patents
Operating mechanism of miniature circuit breaker Download PDFInfo
- Publication number
- CN113140431A CN113140431A CN202110516262.3A CN202110516262A CN113140431A CN 113140431 A CN113140431 A CN 113140431A CN 202110516262 A CN202110516262 A CN 202110516262A CN 113140431 A CN113140431 A CN 113140431A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- contact support
- buckle
- contact
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
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- Breakers (AREA)
Abstract
The invention relates to an operating mechanism of a miniature circuit breaker, wherein a contact support and a lock catch are respectively provided with a lower buckle block and an upper buckle block and are closed to form a buckle carrying cavity, a connecting rod is inserted into the buckle carrying cavity to realize linkage connection with a handle, and the connecting rod is propped against the buckle carrying surface of the lower buckle carrying cavity, so that a jump buckle is omitted, the structure is simple, and the assembly is convenient. When the switch is switched on, the connecting rod is driven by the handle to extrude the buckle surface so that the contact support rotates to realize the switch-on; when the brake is switched off, the tripper or the bimetal drives the lock catch to act, the upper buckle block of the lock catch moves upwards to be separated from the lower buckle block, the connecting rod is separated from the load buckle cavity, the connection between the handle and the contact support is released, the connecting rod returns to the brake switching-off position under the action of the spring, and the connecting rod is pulled into the load buckle cavity again to reset.
Description
Technical Field
The present invention relates to an operating mechanism of a miniature circuit breaker.
Background
The miniature circuit breaker is suitable for protecting overload and short circuit of a line with rated voltage of 230/400V and rated current of 50/60Hz and 63A, and can also be used for infrequent operation and conversion of the line under normal conditions. Miniature circuit breaker adopts operating device to realize breaking action, current operating device includes the handle usually, the moving contact support, the moving contact, the hasp, jump and detain and the hasp all articulates on the moving contact support, the handle passes through U type connecting rod and jumps and detain and be connected, make handle and jump and detain the linkage, cooperation through jumping between detain and the hasp realizes operating device's combined floodgate or divides absolutely, the operating device of this kind of structure is because the jump is detained very little, articulate and drop easily on the support, especially in the assembling process, influence the production efficiency of product, and jump and detain and also can drop when taking apart the circuit breaker and overhaul, the maintenance is inconvenient.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the operating mechanism of the miniature circuit breaker, which has the advantages of simple structure, few accessories and convenience in assembly.
In order to achieve the purpose, the operating mechanism of the miniature circuit breaker comprises a moving contact, a contact support, a lock catch, a connecting rod and a handle, wherein the moving contact is hinged to the lower end of the contact support and can rotate around the contact support within a certain range, the lock catch is hinged to the contact support, the handle is connected with the contact support through the connecting rod, a lower buckle block is formed on the upper portion of the contact support, the inner side of the lock catch extends upwards to form an upper buckle block, the upper buckle block is arranged above the lower buckle block, a hollow buckle carrying cavity is defined by the centers of the lower buckle block and the upper buckle block, one end of the connecting rod is inserted into the buckle carrying cavity, a buckle carrying surface for carrying the thrust of the connecting rod is formed on the inner wall of the side surface of the lower buckle block, the connecting rod abuts against the buckle carrying surface, the upper buckle block is transversely arranged above the buckle carrying surface, and a lock catch spring is arranged between the contact support and the lock catch.
The invention has the advantages that the contact support and the lock catch are respectively provided with the lower buckle loading block and the upper buckle loading block, and are closed to form the buckle loading cavity, the connecting rod is inserted into the buckle loading cavity to realize linkage connection with the handle, the connecting rod is propped against the buckle loading surface of the lower buckle loading cavity, jump buckles are omitted, the structure is simple, and the assembly is convenient. When the switch is switched on, the connecting rod is driven by the handle to extrude the buckle surface so that the contact support rotates to realize the switch-on; when the brake is switched off, the tripper or the bimetal drives the lock catch to act, the upper buckle block of the lock catch moves upwards to be separated from the lower buckle block, the connecting rod is separated from the load buckle cavity, the connection between the handle and the contact support is released, the connecting rod returns to the brake switching-off position under the action of the spring, and the connecting rod is pulled into the load buckle cavity again to reset.
The invention is further arranged that the outer sides of the connecting positions of the upper and lower buckling blocks form an upper buckling surface and a lower buckling surface respectively, and the upper and lower buckling surfaces form a horn shape with a small inside and a large outside. The horn-shaped opening formed by the upper tripping surface and the lower tripping surface can guide the connecting rod to enter the buckle carrying cavity.
The invention is further arranged that a connecting rod groove is formed on the contact support above the lower buckle loading block, and the connecting rod passes through the top end of the buckle loading cavity and is limited in the connecting rod groove. The connecting rod groove can limit the motion range of the connecting rod and prevent the connecting rod from not returning to the buckle carrying cavity correctly when resetting.
The invention is further arranged that a limiting rod is formed on the contact support, a limiting long hole is formed on the lock catch corresponding to the limiting rod, the limiting rod penetrates through the limiting long hole, and the rotation amplitude of the lock catch relative to the contact support is limited in the range of the limiting long hole for the limiting rod to move. The rotation range of the lock catch on the contact support is limited by the matching of the limiting rod and the limiting hole, the opening distance between the upper buckle block and the lower buckle block is ensured, the passageway for the connecting rod to be separated from and reset is not too large, and the connecting rod is prevented from being too large to reset due to too large displacement.
The invention is further provided that the lock catch spring is arranged at the outer side of the contact support and the lock catch, convex spring positioning points are formed on the contact support and the lock catch corresponding to the lock catch spring, and the lock catch spring is connected between the two spring positioning points. The hasp spring sets up and provides the restoring force in the outside for the hasp, moreover convenient assembling.
The invention is further arranged that the moving contact is hinged at the lower end of the contact support, the outer side of the upper end of the moving contact is blocked on the contact support, and the moving contact is connected with a moving contact spring which moves the moving contact at the lower end towards the inner side. The moving contact spring not only plays a role in releasing tension for the contact support, but also plays a role in pressurizing the moving contact.
The invention is further provided that the contact support is hinged with a pull rod, the pull rod is L-shaped, the upper end of the pull rod is hinged on the contact support, and the lower end of the contact support forms a convex pull rod point corresponding to the bending part of the pull rod. The pull rod is hinged on the contact support, and the assembly is convenient.
The invention is further arranged that the lower end of the contact support forms a hinged shaft hinged with the movable contact, the hinged shaft extends towards the lock catch, and the lock catch blocks the top end of the hinged shaft.
The invention is further provided that the top of the upper end of the moving contact extends into the contact support.
The invention is further arranged that the moving contact spring is connected with the upper part of the moving contact, and the moving contact spring extends outwards.
The technical scheme optimizes the structure of the invention, and has the advantages of more reasonable design and more convenient assembly.
Drawings
FIG. 1 is an assembly schematic of an embodiment of the present invention.
Fig. 2 is an exploded view of an embodiment of the present invention.
Fig. 3 is a perspective view of an embodiment of the present invention.
Fig. 4 is a front view of the particular embodiment of the present invention with the handle removed.
Fig. 5 is a side view of an embodiment of the present invention with the handle removed.
Detailed Description
As shown in fig. 1-5, a specific embodiment of the present invention is an operating mechanism of a miniature circuit breaker, including a moving contact 5, a contact support 1, a latch 2, a connecting rod 3, and a handle 4, wherein the latch 2 is hinged on the contact support 1, the handle 4 is connected with the contact support 1 through the connecting rod 3, a lower latch 11 is formed on the upper portion of the contact support 1, an inner side of the latch 2 extends upward to form an upper latch 21, the upper latch 21 is disposed above the lower latch 11, centers of the lower latch 11 and the upper latch 21 enclose a hollow latch cavity 10, one end of the connecting rod 3 is inserted into the latch cavity 10, an inner wall of a side surface of the lower latch 11 forms a latch surface 12 for bearing thrust of the connecting rod, the connecting rod 3 abuts against the latch surface 12, the upper latch 21 is disposed above the latch surface 12, the upper latch 21 and the lower latch 11 form an upper latch surface 23 and a lower latch surface 13 respectively on outer sides of a connection, the upper tripping surface 23 and the lower tripping surface 13 are combined to form a horn shape with a small inside and a large outside, a connecting rod groove 14 is formed on the contact support 1 above the lower tripping block 11, the connecting rod 3 passes through the top end of the tripping cavity 10 and is limited in the connecting rod groove 14, a limiting rod 15 is formed on the contact support 1, a limiting long hole 22 is formed on the lock catch 2 corresponding to the limiting rod 15, the limiting rod 15 penetrates in the limiting long hole 22, and the rotation amplitude of the lock catch 2 relative to the contact support 1 is limited in the range of the limiting long hole 22 for the limiting rod 15 to move. A lock catch spring 24 is arranged between the contact support 1 and the lock catch 2, the lock catch spring 24 is arranged at the outer side of the contact support 1 and the lock catch 2, convex spring positioning points 25 are formed on the contact support 1 and the lock catch 2 corresponding to the lock catch spring 24, and the lock catch spring 24 is connected between the two spring positioning points 25.
Moving contact 5 articulates at contact support 1 lower extreme and can rotate at the certain limit around contact support 1, the upper end outside of moving contact 5 blocks on contact support 1, be connected with moving contact spring 6 with the moving contact trend inboard motion of lower extreme on moving contact 5, it has pull rod 7 to articulate on contact support 1, the pull rod is L shape, the upper end of pull rod 7 articulates on contact support 1, the department of bending that contact support 1 lower extreme corresponds pull rod 7 forms convex pull rod point 16, pull rod point 16 touches the department of bending of pull rod 7 and promotes pull rod 7 motion, the lower extreme of contact support 1 forms articulated shaft 17 of articulated moving contact 5, articulated shaft 17 extends towards hasp 2, hasp 2 blocks the top at articulated shaft 17, inside the upper end top of moving contact 5 stretches into contact support 1, moving contact spring 6 connects on the upper portion of moving contact 5, moving contact spring 6 outwards extends to be connected on the casing.
In the above embodiment, when switching on, the handle 4 drives the connecting rod 3 to press the button-carrying surface 12 to rotate the contact support 1 to realize switching on; when the brake is switched off, the release or the bimetal drives the lock catch 2 to act, the upper buckle block 21 of the lock catch 2 moves upwards to be separated from the lower buckle block 11, the connecting rod 3 is separated from the lock catch cavity 10, the connection between the handle 4 and the contact support 1 is released, the connecting rod 3 returns to the brake switching-off position under the action of the spring, and the connecting rod 3 is pulled into the lock catch cavity 10 again by the handle 4 to reset.
For convenience of description, the inner sides of the contact holder 1 and the latch 2 in the above embodiments refer to the direction in which the contact holder and the latch face the handle, and the outer sides are the opposite.
The above examples are preferred embodiments of the present invention and other obvious modifications are within the scope of the present invention.
Claims (10)
1. The utility model provides an operating device of miniature circuit breaker, operating device include moving contact, contact carrier, hasp, connecting rod, handle, and the moving contact articulates at contact carrier lower extreme and can rotate at certain limit around the contact carrier, and the hasp articulates on the contact carrier, and the handle passes through connecting rod and contact carrier connection, its characterized in that: the upper portion of the contact support is provided with a lower buckling block, the inner side of the buckle extends upwards to form an upper buckling block, the upper buckling block is arranged above the lower buckling block, the centers of the lower buckling block and the upper buckling block enclose a hollow load buckling cavity, one end of a connecting rod is inserted into the load buckling cavity, the inner wall of the side face of the lower buckling block forms a load buckling surface for bearing the thrust of the connecting rod, the connecting rod abuts against the load buckling surface, the upper buckling block is transversely arranged above the load buckling surface, and a buckle spring is arranged between the contact support and the buckle.
2. An operating mechanism of a small size circuit breaker according to claim 1, wherein: the upper tripping surface and the lower tripping surface form a horn shape with a small inside and a large outside.
3. The operating mechanism of a small size circuit breaker according to claim 1 or 2, wherein: and a connecting rod groove is formed on the contact support above the lower buckle loading block, and the connecting rod penetrates through the top end of the buckle loading cavity and is limited in the connecting rod groove.
4. The operating mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the contact support is provided with a limiting rod, the lock catch is provided with a limiting long hole corresponding to the limiting rod, the limiting rod penetrates through the limiting long hole, and the rotation amplitude of the lock catch relative to the contact support is limited in the range where the limiting long hole is used for the limiting rod to move.
5. The operating mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the contact support and the lock catch form convex spring positioning points corresponding to the lock catch spring, and the lock catch spring is connected between the two spring positioning points.
6. The operating mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the moving contact is hinged to the lower end of the contact support, the outer side of the upper end of the moving contact is blocked on the contact support, and a moving contact spring which enables a moving contact at the lower end to move towards the inner side is connected to the moving contact.
7. The operating mechanism of a small size circuit breaker according to claim 1 or 2, wherein: the contact support is hinged with a pull rod, the pull rod is L-shaped, the upper end of the pull rod is hinged to the contact support, and a convex pull rod point is formed at the lower end of the contact support corresponding to the bending position of the pull rod.
8. An operating mechanism of a small size circuit breaker according to claim 6, wherein: the lower end of the contact support forms an articulated shaft which is articulated with the moving contact, the articulated shaft extends towards the lock catch, and the lock catch blocks the top end of the articulated shaft.
9. An operating mechanism of a small size circuit breaker according to claim 8, wherein: the top of the upper end of the moving contact stretches into the contact support.
10. An operating mechanism of a small size circuit breaker according to claim 6, wherein: the moving contact spring is connected to the upper part of the moving contact and extends outwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110516262.3A CN113140431B (en) | 2021-05-12 | 2021-05-12 | Operating mechanism of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110516262.3A CN113140431B (en) | 2021-05-12 | 2021-05-12 | Operating mechanism of miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113140431A true CN113140431A (en) | 2021-07-20 |
| CN113140431B CN113140431B (en) | 2022-10-04 |
Family
ID=76816917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110516262.3A Active CN113140431B (en) | 2021-05-12 | 2021-05-12 | Operating mechanism of miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113140431B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2266800A1 (en) * | 1998-04-17 | 1999-10-17 | Schneider Electric Sa | A device for control of discharge and disengagement of an energy storage device when extraction of a plug-in circuit breaker is performed |
| CN101441944A (en) * | 2008-12-26 | 2009-05-27 | 桂林航天电子有限公司 | High temperature resistant quakeproof electrical switch |
| CN204991618U (en) * | 2015-07-18 | 2016-01-20 | 浙江百宸电气有限公司 | Operating mechanism of circuit breaker |
| CN208460695U (en) * | 2018-07-11 | 2019-02-01 | 浙江诺科电气科技股份有限公司 | Miniature circuit breaker |
| CN214477294U (en) * | 2021-05-12 | 2021-10-22 | 浙江志硕电气有限公司 | Operating mechanism of miniature circuit breaker |
-
2021
- 2021-05-12 CN CN202110516262.3A patent/CN113140431B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2266800A1 (en) * | 1998-04-17 | 1999-10-17 | Schneider Electric Sa | A device for control of discharge and disengagement of an energy storage device when extraction of a plug-in circuit breaker is performed |
| CN101441944A (en) * | 2008-12-26 | 2009-05-27 | 桂林航天电子有限公司 | High temperature resistant quakeproof electrical switch |
| CN204991618U (en) * | 2015-07-18 | 2016-01-20 | 浙江百宸电气有限公司 | Operating mechanism of circuit breaker |
| CN208460695U (en) * | 2018-07-11 | 2019-02-01 | 浙江诺科电气科技股份有限公司 | Miniature circuit breaker |
| CN214477294U (en) * | 2021-05-12 | 2021-10-22 | 浙江志硕电气有限公司 | Operating mechanism of miniature circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113140431B (en) | 2022-10-04 |
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