阅读说明：本技术 一种避免误动的交流配电电弧保护装置 (Alternating current distribution arc protection device capable of avoiding misoperation ) 是由 穆之栋 于 2020-06-08 设计创作，主要内容包括：本发明提供一种避免误动的交流配电电弧保护装置,包括壳体,支座的内部且位于电阻片的右侧固定连接有垫板,垫板的右侧固定连接有双金属片,固定轴的外侧且位于主座的正面活动套接有转板,转板的底部活动铰接有卡板,拨板的正面固定连接有与转板对应的圆柱,挡板的右侧活动插接有与开关件对应的撞板。当配电线路中出现电弧故障时,电阻片发热,双金属片受热变形,通过连杆带动拨板右移,拨板通过圆柱拨动转板旋转,转板带动卡板偏转到右侧,卡板撞击到撞板,撞板右移并断开开关件,从而使得配电线路断开,避免了因电路未断开,电弧故障问题持续扩大,导致电路短路或烧坏的现象,结构简单,使用方便。(The invention provides an alternating current distribution arc protection device capable of avoiding misoperation, which comprises a shell, wherein a backing plate is fixedly connected inside a support and positioned on the right side of a resistor disc, a bimetallic strip is fixedly connected on the right side of the backing plate, a rotating plate is movably sleeved on the outer side of a fixed shaft and positioned on the front side of a main seat, a clamping plate is movably hinged to the bottom of the rotating plate, a cylinder corresponding to the rotating plate is fixedly connected on the front side of a shifting plate, and a collision plate corresponding to a switch piece is movably inserted on the right side of the baffle. When the electric arc trouble appears in the distribution lines, the resistance card generates heat, bimetallic strip thermal deformation, it moves to the right to dial the board through the connecting rod drive, it is rotatory to dial the board and stir the commentaries on classics board through the cylinder, the commentaries on classics board drives the cardboard and deflects to the right side, the cardboard striking hits the board, hits the board and moves and disconnect switch spare to make the distribution lines disconnection, avoided not breaking because of the circuit, the electric arc trouble problem lasts the expansion, lead to the phenomenon of circuit short circuit or burnout, moreover, the steam generator is simple in structure, and is convenient to use.)

1. An ac distribution arc protection device to avoid false actions, comprising a casing (1), characterized in that: the inner part of the shell (1) is fixedly connected with a support (2), the inner part of the support (2) is fixedly connected with a resistance card (3), the inner part of the support (2) is fixedly connected with a backing plate (4) positioned on the right side of the resistance card (3), the right side of the backing plate (4) is fixedly connected with a bimetallic strip (5), the inner part of the shell (1) is fixedly connected with a main seat (6) positioned on the right side of the support (2), the inner part of the main seat (6) is fixedly connected with a fixed shaft (7), the outer side of the fixed shaft (7) is movably sleeved with a rotating plate (8) positioned on the front side of the main seat (6), the bottom of the rotating plate (8) is movably hinged with a clamping plate (9), a spring (10) is installed on the clamping plate (9), the front side of the main seat (6) is fixedly connected with a baffle plate (11) corresponding to the clamping plate (9), the outer side, the front face of the shifting plate (12) is fixedly connected with a cylinder (13) corresponding to the rotating plate (8), the top of the main seat (6) is fixedly connected with a limiting column (14) corresponding to the rotating plate (8), the right end of the bimetallic strip (5) is movably connected with the shifting plate (12) through a connecting rod (16), a switch piece (17) is fixedly arranged in the casing (1) and on the right side of the baffle plate (11), and a collision plate (18) corresponding to the switch piece (17) is movably inserted on the right side of the baffle plate (11).

2. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the resistance card (3) and the switch element (17) are connected with a distribution line.

3. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the base plate (4) is provided with air holes.

4. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the shifting plate (12) is V-shaped, and the two cylinders (13) are respectively positioned on the two end parts of the shifting plate (12).

5. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the two limiting columns (14) are symmetrically distributed around the fixed shaft (7).

6. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: the connecting rod (16) is movably hinged with the bimetallic strip (5) and the shifting plate (12).

7. An ac distribution arc protection device for avoiding false positives as claimed in claim 1, wherein: a return spring is mounted on the striking plate (18), and the left side of the striking plate (18) extends to the left side of the right wall of the baffle plate (11).

Technical Field

The invention belongs to the technical field of alternating current power distribution, and particularly relates to an alternating current power distribution arc protection device for avoiding misoperation.

Background

Arc prevention and control of distribution lines, arc faults of low-voltage distribution lines (including power sockets and equipment leads) are the most main causes of electrical fire of buildings, and a protection device combining "arc detection" and "power-off protection" is an Arc Fault Circuit Interrupter (AFCI), and the fire prevention and control effect of the AFCI on the distribution lines is indisputable.

The AFCI has the same problems of faults and failures as a conventional protective electrical appliance, is easily influenced by the interference of the electrical circuit and the environment, has 'refusal action' and 'misoperation', can maintain or replace the fault circuit only by accurately knowing the fault position, and has not particularly ideal protection effect on the arc faults.

Therefore, in view of the above, research and improvement are made on the existing structure and defects, and an ac distribution arc protection device for avoiding malfunction is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides an ac distribution arc protection device for avoiding malfunction, which is achieved by the following specific technical means:

an alternating current distribution arc protection device for avoiding misoperation comprises a shell, wherein a support is fixedly connected inside the shell, a resistance card is fixedly connected inside the support, a backing plate is fixedly connected inside the support and positioned on the right side of the resistance card, a bimetallic strip is fixedly connected on the right side of the backing plate, a main seat is fixedly connected inside the shell and positioned on the right side of the support, a fixed shaft is fixedly connected inside the main seat, a rotating plate is movably sleeved outside the fixed shaft and positioned on the front side of the main seat, a clamping plate is movably hinged at the bottom of the rotating plate, a spring is installed on the clamping plate, a baffle plate corresponding to the clamping plate is fixedly connected on the front side of the main seat, a shifting plate is movably sleeved outside the fixed shaft and positioned on the back side of the main seat, a cylinder corresponding to the rotating plate is fixedly connected on the front side of the shifting plate, a limiting column corresponding to the rotating plate is fixedly connected on the top of, the inside of casing and the right side fixed mounting who is located the baffle have a switch spare, and the right side activity of baffle is pegged graft and is had the board that hits that corresponds with the switch spare.

Further, resistance card and switch spare all are connected with the distribution lines, and when the electric arc trouble appeared in the distribution lines, the resistance card can generate heat, and the disconnection and the intercommunication of switch spare control distribution lines.

Furthermore, the base plate is provided with air holes so that heat generated by the resistance sheet can be conveniently transferred to the bimetallic strip.

Further, dial the board and be the V font, the cylinder includes two, is located respectively and dials two tip of board, when dialling the board rotation, can drive through the cylinder and change the board rotation.

Furthermore, the limiting columns comprise two limiting columns which are symmetrically distributed around the fixed shaft.

Furthermore, the connecting relationship between the connecting rod and the bimetallic strip as well as the connection relationship between the connecting rod and the shifting plate are both movably hinged.

Further, hit and install reset spring on the board, hit the left side of board and extend to the left side of baffle right wall, when the cardboard removed to the right side, can drive and hit the board and move to the right for the circuit disconnection of switch spare.

Advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

1. when the electric arc trouble appears in the distribution lines, the resistance card is too big to generate heat because of short-circuit current, bimetallic strip is heated and is out of shape, it moves to dial the board right side to drive through the connecting rod, it is rotatory to dial the board and stir the commentaries on classics board through the cylinder, the commentaries on classics board is rotatory the back, the effort that breaks through the spring drives the cardboard and deflects the right side, when the cardboard rotates the interior right wall department to the baffle, can strike and hit the board, make and hit the board and move and disconnect switch spare right side, thereby make the distribution lines disconnection, avoided not disconnected because of the circuit, the electric arc trouble problem lasts the expansion, the phenomenon that leads to the short circuit of.

2. Through setting up the bimetallic strip, the temperature variation when utilizing the arc fault comes inspection and protection, need not to know exact position, just can realize the effect of auto-power-off protection, convenient to use.

3. When the arc fault is relieved, the temperature is reduced, the bimetallic strip resets, the whole device also automatically resets, and the use is convenient.

4. Through setting up commentaries on classics board, cardboard and spring, the cardboard can remain stability, can not lightly rotate, has guaranteed the reliability of whole device work.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a front sectional view of the bimetallic strip and pulling plate connecting structure of the present invention;

FIG. 3 is a front sectional view of the main seat attachment structure of the present invention;

fig. 4 is an enlarged view of a portion a of fig. 1 according to the present invention.

In the figure: 1. a housing; 2. a support; 3. resistance cards; 4. a base plate; 5. a bimetal; 6. a main base; 7. a fixed shaft; 8. rotating the plate; 9. clamping a plate; 10. a spring; 11. a baffle plate; 12. dialing a plate; 13. a cylinder; 14. a limiting column; 15. a connecting rod; 16. sealing a gasket; 17. a switch member; 18. and (6) striking a plate.

Detailed Description

The invention is further described below with reference to the accompanying drawings: