CN204303699U - The anti-contact falling device of link type - Google Patents
The anti-contact falling device of link type Download PDFInfo
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- CN204303699U CN204303699U CN201420808234.4U CN201420808234U CN204303699U CN 204303699 U CN204303699 U CN 204303699U CN 201420808234 U CN201420808234 U CN 201420808234U CN 204303699 U CN204303699 U CN 204303699U
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- contact
- rotary shaft
- shaft body
- moving contact
- connecting lever
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Abstract
The utility model discloses the anti-contact falling device of a kind of link type.It includes rotary shaft body and moving contact, moving contact Central Symmetry, its rear and front end is respectively arranged with moving contact, the two ends up and down of rotary shaft body are respectively arranged with a sliding tray, and the side of each sliding tray is provided with a pair connecting lever, and two pairs of connecting levers are symmetrically set, the front end of often pair of connecting lever is all hinged with bayonet lock, two bayonet locks are connected by the extension spring be positioned at outside rotary shaft body respectively, and the forward and backward of moving contact symmetrical centre is respectively provided with a draw-in groove, and bayonet lock can be spacing in draw-in groove.After adopting above-mentioned structure; make course of action smooth and easy, resistance is little, improves stability and reliability; also both sides contact positional precision is made greatly to improve; ensure the balance of both sides, symmetry, consistency is good; whole contact system structure is simple, reliable; under short-circuit current condition, the unburned damage of energy available protecting contact, greatly improves the breaking capacity of circuit breaker.
Description
Technical field
The utility model relates to a kind of rotating axis component of low-voltage circuit breaker, and specifically the anti-contact falling device of a kind of link type, belongs to low voltage electrical equipment technical field.
Background technology
The rotating axis component of low-voltage circuit breaker generally includes the rotary shaft body driven by breaker operating mechanism and the moving contact be arranged on rotary shaft body, moving contact is driven to rotate by rotary shaft body during normal work, realize with circuit breaker static contact between point, close a floodgate, but when circuit breaker, due to faults such as short circuits, overcurrent occurs, need contact to disconnect rapidly.
When overcurrent in order to ensure that contact can disconnect rapidly, a kind of anti-contact falling device is disclosed in prior art, this device includes rotary shaft body and front and back and runs through rotary shaft body inner chamber and sliding tray on the moving contact of the axis body center rotating that can rotate and moving contact, a bayonet lock stretched out to both sides is had in sliding tray, each bayonet lock two ends are drawn by the extension spring that a pair is positioned at outside rotary shaft body, the stiff end of extension spring is connected on the steady pin of rotary shaft body both sides external, bayonet lock is pressed over all the time on cam surface and also can stops bottom two depression sections under the active force of extension spring, there is following defect in traditional this structure, , on the one hand, when scolding out, because spring is in the poor stability of free state, stress is unstable, cause rotational resistance large, malfunction, Reliability of Microprocessor is poor, in addition on the one hand, contact center is in relatively large free state, the degree of freedom is large, "on" position contact two side position is uneven, two contact "on" positions are inconsistent.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of good reliability, stability is high, and the unburned damage of energy available protecting contact, improves the anti-contact falling device of link type of circuit breaker breaking capacity.
In order to solve the problems of the technologies described above, the anti-contact falling device of link type of the present utility model, include rotary shaft body and front and back and run through rotary shaft body inner chamber and the moving contact of the axis body center rotating that can rotate, moving contact Central Symmetry, its rear and front end is respectively arranged with upper, the moving contact that lower two fixed contact contacts are corresponding, the two ends up and down of rotary shaft body are respectively arranged with a sliding tray, the side of each sliding tray is provided with the connecting lever be hinged on for a pair on rotary shaft body, two pairs of connecting levers are symmetrically set, the front end of often pair of connecting lever is all hinged with a horizontally set and spacing bayonet lock in sliding tray, two bayonet locks are connected by the extension spring be positioned at outside rotary shaft body respectively, before moving contact symmetrical centre, after be respectively provided with a draw-in groove, bayonet lock can be spacing in draw-in groove.
The center of described moving contact has mounting hole, and the center of described rotary shaft body is horizontally arranged with bearing pin, and described bearing pin extend in mounting hole.
All bearing is installed between described bayonet lock and connecting lever and between connecting lever and rotary shaft body.
After adopting above-mentioned structure, the hinged bayonet lock of the two pairs of symmetrical connecting levers arranged due to rotary shaft body sliding tray side and the front end of connecting lever, the degree of freedom of bayonet lock can be limited thus, connecting lever also made the easier dead point excessively of moving contact, make course of action smooth and easy, resistance is little, improve stability and reliability, also both sides contact positional precision is made greatly to improve, the central pin shaft that the center of moving contact has mounting hole and coordinates with mounting hole, within the scope of the cooperation that moving contact is limited, limit the degree of freedom of contact, ensure the balance of both sides, symmetry, consistency is good, further increase reliability of operation, simultaneously between bayonet lock and connecting lever and all bearing is installed between connecting lever and rotary shaft body, it is made to rotate flexibly, further reduce action resistance, whole contact system structure is simple, reliably, under short-circuit current condition, the unburned damage of energy available protecting contact, greatly improve the breaking capacity of circuit breaker.
Accompanying drawing explanation
Fig. 1 is the perspective view of the anti-contact falling device of the utility model link type;
Fig. 2 is the main TV structure schematic diagram of the utility model link type anti-contact falling device;
Fig. 3 is the cross-sectional view of the anti-contact falling device of the utility model link type.
Embodiment
Below in conjunction with the drawings and specific embodiments, the anti-contact falling device of link type of the present utility model is described in further detail.
As shown in the figure, the anti-contact falling device of link type of the present utility model, include rotary shaft body 1 and front and back and run through rotary shaft body inner chamber and the moving contact 2 of the axis body center rotating that can rotate, moving contact 2 Central Symmetry, its rear and front end is respectively arranged with upper, the moving contact 21 that lower two fixed contact contacts are corresponding, as seen from the figure, on moving contact 2, the direction of moving contact is contrary, the two ends up and down of rotary shaft body 1 are respectively arranged with a sliding tray, the side of each sliding tray is provided with the connecting lever 3 be hinged on for a pair on rotary shaft body, two pairs of connecting levers 3 are symmetrically set (arranging in opposite directions), the front end of often pair of connecting lever 3 is all hinged with a horizontally set and spacing bayonet lock 4 in sliding tray, two bayonet locks 4 are connected by the extension spring 5 be positioned at outside rotary shaft body respectively, that is the spring be positioned on the left of rotary shaft body is connected to two bayonet lock 4 left ends, the spring be positioned on the right side of rotary shaft body is connected to two bayonet lock 4 right-hand members, before moving contact 2 symmetrical centre, after be respectively provided with a draw-in groove 6, as seen from the figure, moving contact also has the arcwall face to draw-in groove transition, on bayonet lock 4 cover have can on bayonet lock free rolling roller, bayonet lock 4 can be spacing in draw-in groove 6, the center of moving contact 2 has mounting hole 7, the center of rotary shaft body 1 is horizontally arranged with bearing pin 8, bearing pin 8 extend in mounting hole 7, all bearing is installed between bayonet lock 6 and connecting lever 3 and between connecting lever 3 and rotary shaft body 1, reduce friction.
Motion process and principle as follows: when short circuit current is through moving contact, moving contact is subject to electrodynamic repulsion force, and the pulling force overcoming touch spring rises rapidly, and the axis body center that rotates rotates; Now roller rolls along cambered surface under the active force of moving contact, connecting lever and bayonet lock is rotated around connecting lever jointed shaft, and moves up along sliding tray, until roller stepped cambered surface peak; After crossing the peak of cambered surface, bayonet lock is subject to the pulling force of touch spring, and roller falls in draw-in groove 6 in the drive of connecting lever, moving contact stop motion; When operating mechanism response action, pull rotary shaft body, make roller oppositely stride across the peak of cambered surface, get back to initial condition.
Claims (3)
1. the anti-contact falling device of link type, include rotary shaft body (1) and front and back and run through rotary shaft body inner chamber and the moving contact (2) of the axis body center rotating that can rotate, moving contact (2) Central Symmetry, its rear and front end is respectively arranged with upper, the moving contact (21) that lower two fixed contact contacts are corresponding, it is characterized in that: the two ends up and down of described rotary shaft body (1) are respectively arranged with a sliding tray, the side of described each sliding tray is provided with the connecting lever (3) be hinged on for a pair on rotary shaft body, two pairs of connecting levers (3) are symmetrically set, the front end of described often pair of connecting lever (3) is all hinged with a horizontally set and spacing bayonet lock (4) in sliding tray, described two bayonet locks (4) are connected by the extension spring be positioned at outside rotary shaft body (5) respectively, before described moving contact (2) symmetrical centre, after be respectively provided with a draw-in groove (6), described bayonet lock (4) can be spacing in draw-in groove (6).
2. according to the anti-contact falling device of link type according to claim 1, it is characterized in that: the center of described moving contact (2) has mounting hole (7), the center of described rotary shaft body (1) is horizontally arranged with bearing pin (8), and described bearing pin (8) extend in mounting hole (7).
3. according to the anti-contact falling device of link type according to claim 1, it is characterized in that: between described bayonet lock (6) and connecting lever (3) and between connecting lever (3) and rotary shaft body (1), all bearing is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808234.4U CN204303699U (en) | 2014-12-19 | 2014-12-19 | The anti-contact falling device of link type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420808234.4U CN204303699U (en) | 2014-12-19 | 2014-12-19 | The anti-contact falling device of link type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204303699U true CN204303699U (en) | 2015-04-29 |
Family
ID=53109221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420808234.4U Active CN204303699U (en) | 2014-12-19 | 2014-12-19 | The anti-contact falling device of link type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204303699U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637908A (en) * | 2018-12-21 | 2019-04-16 | 上海电器科学研究所（集团）有限公司 | A kind of breaker of plastic casing contact retaining mechanism |
| WO2023284898A1 (en) * | 2021-07-15 | 2023-01-19 | 上海正泰智能科技有限公司 | Quick tripping apparatus for circuit breaker |
| CN117416848A (en) * | 2023-12-18 | 2024-01-19 | 河南卫华重型机械股份有限公司 | Automobile stamping die is equipped with mould crane |
-
2014
- 2014-12-19 CN CN201420808234.4U patent/CN204303699U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637908A (en) * | 2018-12-21 | 2019-04-16 | 上海电器科学研究所（集团）有限公司 | A kind of breaker of plastic casing contact retaining mechanism |
| WO2023284898A1 (en) * | 2021-07-15 | 2023-01-19 | 上海正泰智能科技有限公司 | Quick tripping apparatus for circuit breaker |
| CN117416848A (en) * | 2023-12-18 | 2024-01-19 | 河南卫华重型机械股份有限公司 | Automobile stamping die is equipped with mould crane |
| CN117416848B (en) * | 2023-12-18 | 2024-04-05 | 河南卫华重型机械股份有限公司 | Automobile stamping die is equipped with mould crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160907 Address after: Xinba Daquan 212211 Yangzhong Road, Zhenjiang City, Jiangsu province 66 Patentee after: Jiangsu Daquan Kai Kai switch Co., Ltd. Address before: The new town science and Technology Park Daquan 212211 Yangzhong Road, Jiangsu province Zhenjiang City, No. 11 Patentee before: Jiangsu Daqo Kfine Electric Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee after: Jiangsu Daquan Kaifan switch Co.,Ltd. Address before: No.66 Daquan Road, Xinba Town, Yangzhong City, Zhenjiang City, Jiangsu Province Patentee before: Jiangsu Daquan Kaifan Switch Co.,Ltd. |