Opening and closing device

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a switch-on and switch-off device which comprises a shell, a power-off mechanism is arranged in the shell, a wire coil is connected to the power-off mechanism, a circuit breaking assembly and a transmission assembly are arranged in the shell, and the circuit breaking assembly is attached to the transmission assembly and the wire coil respectively. Under the action of the power-off mechanism, the circuit breaking assembly, the switch assembly and the transmission assembly, rapid opening and power-off of the circuit breaker can be achieved, circuit protection is carried out, meanwhile, the overall structure is simple, installation is convenient, the power-off process is rapid in response, manufacturing cost and installation difficulty are reduced, and the service life of the circuit breaker is prolonged. And the use safety of the circuit breaker is improved, so that the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker technical field, concretely is a kind of opening and closing device. BACKGROUND

[0002] Circuit breaker refers to the switch device that can be closed, load and open the current under the condition of normal loop and can be closed, load and open the current under the condition of abnormal loop within the specified time, circuit breaker can be used to distribute electric energy, start asynchronous motor infrequently, carry out protection to power supply circuit and motor etc., when short circuit occurs in circuit breaker, the opening and closing mechanism in it can automatically cut off the circuit, its function is equivalent to the combination of fuse-type switch and over-undervoltage relay, and generally no parts need to be changed after breaking fault current.

[0003] At present, the opening and closing device in traditional circuit breaker is generally lever structure, the middle part of operating button has rotating connecting part connected with circuit breaker shell, opening and closing operation is realized by pressing the two sides of operating button, operating button is connected with moving contact assembly through linkage rod, inner handle and moving contact connecting rod to realize the opening and closing control of moving contact assembly, and two hinged connecting parts are arranged to connect linkage rod and moving contact connecting rod respectively, this structure uses complex connecting rod structure, resulting in complicated overall structure of opening and closing, increasing manufacturing cost and installation difficulty, therefore we propose a kind of opening and closing device. UTILITY MODEL CONTENT

[0004] Based on the deficiencies of the prior art mentioned in the above background art, the utility model provides an opening and closing device.

[0005] The utility model overcomes the above technical problems by adopting the following technical scheme, specifically:

[0006] An opening and closing device, comprising: a shell, a power-off mechanism is arranged in the shell, a lead coil is connected to the power-off mechanism, a circuit breaking assembly and a transmission assembly are arranged in the shell, and the circuit breaking assembly is attached to the transmission assembly and the lead coil respectively, a switch assembly is arranged in the shell, and the switch assembly is engaged with the transmission assembly and extends to the outside of the shell, and an arc extinguishing mechanism is arranged in the shell.

[0007] As a further scheme of the utility model: the power-off mechanism comprises a supporting plate, a first spring, a metal block and an extrusion rod, the supporting plate is connected to the inside of the shell, the first spring is connected to the top of the supporting plate, the metal block is connected to the top end of the first spring, the extrusion rod is connected to the bottom of the metal block, and the extrusion rod is located on the inner surface of the first spring, and the bottom end of the extrusion rod penetrates through the supporting plate and extends to the bottom of the supporting plate.

[0008] As a further scheme of the utility model: the circuit breaking assembly includes a horizontal plate, a second spring, an electricity receiving plate, a first fixed column, a hinged plate and a contact hook, the horizontal plate is connected inside the shell, the second spring is connected on the top of the horizontal plate, one side of the bottom of the electricity receiving plate is connected with the top end of the second spring, the first fixed column is connected inside the shell, the hinged plate is hinged on the outer surface of the first fixed column, and one end of the hinged plate is attached to the top of the electricity receiving plate, and the contact hook is connected to the other end of the hinged plate.

[0009] As a further scheme of the utility model: the switch assembly includes a second fixed column, a semicircular gear and a handle, the second fixed column is connected inside the shell, the semicircular gear is connected to the outer surface of the second fixed column, and the handle is connected to the outer surface of the semicircular gear, and one end of the handle extends to the outer surface of the shell.

[0010] As a further scheme of the utility model: the transmission assembly includes a third fixed column, a main gear, a guide rod and a rack, the third fixed column is connected inside the shell, the main gear is connected to the outer surface of the third fixed column, the guide rod is connected between the top and bottom of the inner wall of the shell, and one end of the contact hook is attached to one of the tooth grooves on the outer surface of the main gear, the rack is slidingly connected to the outer surface of the guide rod, and the rack is engaged with the main gear and the semicircular gear on both sides.

[0011] As a further scheme of the utility model: the arc extinguishing mechanism includes a connecting frame and a plurality of arc extinguishing plates, the connecting frame is connected inside the shell, and the plurality of arc extinguishing plates are connected to the top of the inner wall of the connecting frame at equal distances.

[0012] As a further scheme of the utility model: the arc extinguishing mechanism further includes a plurality of inclined grooves and a plurality of wave grooves, the plurality of inclined grooves are respectively formed in the bottom of the plurality of arc extinguishing plates, and the plurality of wave grooves are respectively formed on the outer surface of the plurality of arc extinguishing plates.

[0013] After adopting the above structure, compared with the prior art, the utility model has the following advantages:

[0014] 1. In the utility model, under the action of the power-off mechanism, the circuit breaking assembly, the switch assembly and the transmission assembly, the circuit breaker can be quickly tripped and powered off for circuit protection, the overall structure is simple, installation is convenient, the power-off process is quick, the manufacturing cost and installation difficulty are reduced, the safety of the circuit breaker is improved, and the practicality of the device is improved.

[0015] 2. The utility model discloses a through the role of arc extinguishing mechanism, can let arc be introduced between multiple arc extinguishing plates quickly, and the route of arc flowing on the surface of multiple arc extinguishing plates is prolonged, the time of arc heat dissipation is prolonged, makes arc can completely heat dissipation, avoids the condition that arc reignites, to further improve the practicality of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the plane structure schematic diagram of the shell inside;

[0018] Figure 3 It is the structure schematic diagram of the utility model power-off mechanism, circuit breaking assembly, switch assembly and transmission assembly;

[0019] Figure 4 It is the structure schematic diagram of the utility model arc extinguishing mechanism.

[0020] In the drawing: 1, shell, 2, power-off mechanism, 201, support plate, 202, first spring, 203, metal block, 204, extrusion rod, 3, circuit breaking assembly, 301, horizontal plate, 302, second spring, 303, electricity receiving plate, 304, first fixed column, 305, hinged plate, 306, abutment hook, 4, switch assembly, 401, second fixed column, 402, semicircular gear, 403, handle, 5, transmission assembly, 501, third fixed column, 502, main gear, 503, guide rod, 504, rack, 6, lead coil, 7, arc extinguishing mechanism, 701, connecting frame, 702, arc extinguishing plate, 703, inclined groove, 704, wave groove. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0022] Embodiment 1:

[0023] Please refer to Figures 1-4The utility model discloses an embodiment of a kind of opening and closing device, comprising: shell 1, the inside of shell 1 is provided with power-off mechanism 2, power-off mechanism 2 is connected with guide coil 6, the inside of shell 1 is provided with circuit breaking assembly 3 and transmission assembly 5, and circuit breaking assembly 3 is respectively combined with transmission assembly 5 and guide coil 6, the inside of shell 1 is provided with switch assembly 4, and switch assembly 4 is engaged with transmission assembly 5 and extends to the outside of shell 1, the inside of shell 1 is provided with arc extinguishing mechanism 7.

[0024] Specifically, when the short circuit occurs to the circuit breaker, the power-off mechanism 2 is affected by the magnetism of the external electromagnetic coil, so that the power-off mechanism 2 is lowered, the power-off mechanism 2 is pressed to compress the circuit breaking assembly 3, the circuit breaking assembly 3 is separated from the guide coil 6, and the circuit breaking assembly 3 is compressed at the same time to drive the switch assembly 4 to rotate through the transmission assembly 5, so as to close the switch assembly 4, and then complete the opening of the circuit breaker, the arc in the circuit breaker enters the inside of the arc extinguishing mechanism 7, and the setting of the arc extinguishing mechanism 7 can extend the moving path of the arc, so as to prolong the heat dissipation time of the arc, and then improve the cooling effect of the arc.

[0025] Embodiment 2:

[0026] Please refer to Figures 2-3The utility model discloses an embodiment of a kind of opening and closing device, power-off mechanism 2 includes bracing plate 201, first spring 202, metal block 203 and extruding rod 204, bracing plate 201 is connected in the inside of shell 1, first spring 202 is connected in the top of bracing plate 201, metal block 203 is connected in the top of first spring 202, extruding rod 204 is connected in the bottom of metal block 203, and extruding rod 204 is located in the inner surface of first spring 202, the bottom end of extruding rod 204 is passed through bracing plate 201 and extends to the bottom of bracing plate 201, circuit breaking assembly 3 includes horizontal plate 301, second spring 302, electricity connection plate 303, first fixed column 304, hinged plate 305 and contact hook 306, horizontal plate 301 is connected in the inside of shell 1, second spring 302 is connected in the top of horizontal plate 301, the side of electricity connection plate 303 bottom is connected with the top of second spring 302, first fixed column 304 is connected in the inside of shell 1, hinged plate 305 is hinged in the outer surface of first fixed column 304, and one end of hinged plate 305 is attached to the top of electricity connection plate 303, contact hook 306 is connected in the other end of hinged plate 305, switch assembly 4 includes second fixed column 401, semicircular gear 402 and handle 403, second fixed column 401 is connected in the inside of shell 1, semicircular gear 402 is connected in the outer surface of second fixed column 401, handle 403 is connected in the outer surface of semicircular gear 402, and one end of handle 403 extends to the outer surface of shell 1, transmission assembly 5 includes third fixed column 501, main gear 502, guide rod 503 and rack 504, third fixed column 501 is connected in the inside of shell 1, main gear 502 is connected in the outer surface of third fixed column 501, guide rod 503 is connected between the top of inner wall and the bottom of inner wall in shell 1, and one end of contact hook 306 is attached to one of the tooth groove of the outer surface of main gear 502, rack 504 is slidably connected in the outer surface of guide rod 503, and the two sides of rack 504 are engaged with main gear 502 and semicircular gear 402 respectively.

[0027] Specifically, metal block 203 is moved downward under the action of magnet, and extrudes and compresses first spring 202, while handle 403 drives extruding rod 204 to move downward, extruding rod 204 extrudes the top of hinged plate 305, so that one end of hinged plate 305 rotates and falls, and hinged plate 305 extrudes electricity connection plate 303 to drive second spring 302 to compress, at this time, electricity connection plate 303 will not contact lead coil 6, then the other end of hinged plate 305 rotates and rises and pushes main gear 502 to rotate clockwise through contact hook 306, main gear 502 pushes rack 504 to move upward on the outer surface of guide rod 503, rack 504 drives semicircular gear 402 to rotate, and then handle 403 is rapidly rotated and falls, thereby realizing the operation of opening.

[0028] Embodiment 3:

[0029] Please refer to Figure 4 In the embodiment of the utility model, a kind of opening and closing device, arc extinguishing mechanism 7 includes connecting frame 701 and multiple arc extinguishing plates 702, connecting frame 701 is connected in the inside of shell 1, multiple arc extinguishing plates 702 are equally spaced and connected in the top of the inner wall of connecting frame 701, arc extinguishing mechanism 7 further include multiple inclined grooves 703 and multiple wave grooves 704, multiple inclined grooves 703 are respectively opened in the bottom of multiple arc extinguishing plates 702, and multiple wave grooves 704 are respectively opened in the outer surface of multiple arc extinguishing plates 702.

[0030] Specifically, arc can quickly enter between multiple arc extinguishing plates 702 by multiple inclined grooves 703, and the contact length of arc and multiple arc extinguishing plates 702 is increased by multiple wave grooves 704, so that arc forms a curved path movement, prolongs the heat dissipation time, avoids arc reignition in a short time, and increases the reliability of circuit breaker breaking circuit and the effect of arc cooling.

[0031] The working principle of the utility model is: when the line is short-circuited, the metal block 203 is moved downward under the action of magnetism, and the first spring 202 is compressed, the extrusion rod 204 is slid downward on the top of the support plate 201, the bottom end of the extrusion rod 204 is in contact with the top of the hinged plate 305, and one end of the hinged plate 305 is rotated and descended, so that one side of the top of the power contact plate 303 is pressed, the second spring 302 is compressed, and the power contact plate 303 is separated from the guide coil 6, at this time, the other end of the hinged plate 305 is rotated and ascended, and then the hook 306 pushes the main gear 502 to rotate clockwise, the main gear 502 rotates and pushes the rack 504 to slide upward on the outer surface of the guide rod 503, the rack 504 slides upward and drives the semicircular gear 402 to rotate the handle 403, and then the handle 403 is rapidly rotated and descended, and the power contact plate 303 is not attached to the guide coil 6, so that the opening operation is realized, the released arc can enter between multiple arc extinguishing plates 702 more quickly under the action of multiple inclined grooves 703, and the contact length of arc and multiple arc extinguishing plates 702 can be increased under the action of multiple wave grooves 704, so that arc forms a curved path movement, thereby prolonging the heat dissipation time, avoiding arc reignition in a short time, and increasing the reliability of circuit breaker breaking circuit.

[0032] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model.

Claims

1. A switching device, characterized in that The utility model relates to a power-off mechanism, circuit breaking assembly, transmission assembly, switch assembly and arc extinguishing mechanism. The power-off mechanism (2) comprises a supporting plate (201), a first spring (202), a metal block (203) and an extruding rod (204), the supporting plate (201) is connected in the inside of the shell (1), the first spring (202) is connected on the top of the supporting plate (201), the metal block (203) is connected on the top end of the first spring (202), the extruding rod (204) is connected on the bottom of the metal block (203), and the extruding rod (204) is located on the inner surface of the first spring (202), the bottom end of the extruding rod (204) penetrates through the supporting plate (201) and extends to the bottom of the supporting plate (201).

2. The opening and closing device according to claim 1, characterized in that The circuit breaking assembly (3) comprises a horizontal plate (301), a second spring (302), an electricity connecting plate (303), a first fixed column (304), a hinged plate (305) and a resisting hook (306), the horizontal plate (301) is connected in the inside of the shell (1), the second spring (302) is connected on the top of the horizontal plate (301), one side of the bottom of the electricity connecting plate (303) is connected with the top end of the second spring (302), the first fixed column (304) is connected in the inside of the shell (1), the hinged plate (305) is hinged on the outer surface of the first fixed column (304), and one end of the hinged plate (305) is combined with the top of the electricity connecting plate (303), the resisting hook (306) is connected on the other end of the hinged plate (305).

3. The opening and closing device according to claim 1, characterized in that, The switch assembly (4) comprises a second fixed column (401), a semicircular gear (402) and a handle (403), the second fixed column (401) is connected in the inside of the shell (1), the semicircular gear (402) is connected on the outer surface of the second fixed column (401), the handle (403) is connected on the outer surface of the semicircular gear (402), and one end of the handle (403) extends to the outer surface of the shell (1).

4. The opening and closing device according to claim 1, characterized in that, ​ 5. The opening and closing device according to claim 1, characterized in that, The transmission assembly (5) comprises a third fixed column (501), a main gear (502), a guide rod (503) and a rack (504), the third fixed column (501) is connected in the inside of the shell (1), the main gear (502) is connected on the outer surface of the third fixed column (501), the guide rod (503) is connected between the top and bottom of the inner wall of the shell (1), and one end of the guide rod (503) is in contact with one of the tooth grooves on the outer surface of the main gear (502), and the rack (504) is slidingly connected on the outer surface of the guide rod (503), and the two sides of the rack (504) are engaged with the main gear (502) and the semicircular gear (402) respectively.

6. The opening and closing device according to claim 5, characterized in that The arc extinguishing mechanism (7) comprises a connecting frame (701) and a plurality of arc extinguishing plates (702), the connecting frame (701) is connected in the inside of the shell (1), and the plurality of arc extinguishing plates (702) are connected at equal distances on the top of the inner wall of the connecting frame (701).

7. The opening and closing device according to claim 6, characterized in that The arc extinguishing mechanism (7) further comprises a plurality of inclined grooves (703) and a plurality of wave grooves (704), the plurality of inclined grooves (703) are respectively formed on the bottom of the plurality of arc extinguishing plates (702), and the plurality of wave grooves (704) are respectively formed on the outer surface of the plurality of arc extinguishing plates (702).

Images