CN211455631U - Operating mechanism of miniature circuit breaker - Google Patents
Operating mechanism of miniature circuit breaker Download PDFInfo
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- CN211455631U CN211455631U CN202020414157.XU CN202020414157U CN211455631U CN 211455631 U CN211455631 U CN 211455631U CN 202020414157 U CN202020414157 U CN 202020414157U CN 211455631 U CN211455631 U CN 211455631U
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- contact
- circuit breaker
- handle
- limiting
- return spring
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Abstract
The utility model discloses an operating mechanism of a miniature circuit breaker, which comprises a handle, a U-shaped rod, a contact and a moving contact, and also comprises a contact support, a lock catch return spring and a contact pressure spring, wherein the handle is provided with the handle return spring, the contact support and the lock catch are coaxially and rotatably arranged in an insulating shell, the contact support is provided with a sliding groove, the sliding groove is provided with a first limit part which is arranged in a fall way with the lower side groove edge at the notch position of the sliding groove, the lock catch is provided with a second limit part, and an enclosing movable opening is formed between the second limiting part and the first limiting part and used for limiting the other end, far away from the handle, of the U-shaped rod to slide into the sliding groove, a lock catch return spring is arranged at the rotating connection position of the contact support and the lock catch, and the moving contact is rotatably connected to the contact support through a contact pressure spring so as to enable the moving contact to swing along with the contact support and further enable the moving contact to be separated from/contacted with the contact. The utility model discloses a simple structure has reduced the manufacturing cost of circuit breaker, has improved the sensitivity of circuit breaker.
Description
Technical Field
The utility model relates to a circuit breaker technical field, concretely relates to miniature circuit breaker's operating device.
Background
At present, the miniature circuit breaker is widely used in industrial, commercial, high-rise and civil residence and other places, mainly used for overload and short circuit protection of lighting, distribution lines and equipment in office buildings, households and similar places, and also used for infrequent on-off and switching of lines. The existing circuit breaker operating mechanism without the rotating plate mainly comprises a handle, a connecting rod, a contact support, a linkage piece, a lock catch, a jump buckle and other parts, and the number of operating mechanism components is large, so that the production process of the circuit breaker is complex, the production cost of the circuit breaker is improved, and the breaking time required by the circuit breaker is longer due to the large number of components, and the sensitivity of the circuit breaker is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a miniature circuit breaker's operating device, its subassembly is few, simple structure, has reduced the manufacturing cost of circuit breaker, has improved the sensitivity of circuit breaker.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an operating mechanism of a miniature circuit breaker comprises a handle, a U-shaped rod, a contact and a moving contact which are arranged in an insulating shell, wherein one end of the U-shaped rod is connected with the handle, the operating mechanism further comprises a contact support, a lock catch return spring and a contact pressure spring, the handle is provided with the handle return spring, the contact support and the lock catch are coaxially and rotatably arranged in the insulating shell, the contact support is provided with a sliding groove, the notch of the sliding groove is provided with a first limiting part which is arranged in a fall way with the lower side groove edge, the lock catch is provided with a second limiting part, an enclosing movable opening is formed between the second limiting part and the first limiting part and used for limiting the other end of the U-shaped rod, which is far away from the handle, to slide into the sliding groove, the lock catch spring is arranged at the rotating connection position of the contact support and the lock catch, the moving contact is rotatably connected to the contact support through the contact pressure spring, so that the moving contact supports deflection along with the contact to separate/contact the moving contact from/with the contact.
Furthermore, a first sub-limiting part is formed on the first limiting part, and a second sub-limiting part corresponding to the first sub-limiting part is formed on the second limiting part.
The connecting shaft is arranged in the insulating shell, a first mounting hole is formed in the contact support, a hollow first mounting column is arranged on the lock catch, and the connecting shaft is inserted into the first mounting hole and the first mounting column from bottom to top in sequence.
Furthermore, the contact supports to be equipped with first spacing card in the side of first mounting hole, the hasp is equipped with the spacing card of second in the side of first erection column, hasp return spring adopts the torsional spring, and its cover is located on the first erection column, two stitch of hasp return spring butt respectively in on first spacing card and the spacing card of second.
Furthermore, the contact supports that a second mounting column is arranged on the back side far away from the sliding groove, a second mounting hole is formed in the moving contact, and the moving contact is inserted into the second mounting column through the second mounting hole and connected with the second mounting column through the contact pressure spring.
Furthermore, a third limiting clamp is arranged on the side edge of the second mounting column, the contact pressure spring is a torsion spring and is sleeved on the second mounting column, one stitch of the contact pressure spring abuts against the third limiting clamp, and the other stitch of the contact pressure spring is hooked on the movable contact.
Further, the contact supports and is equipped with a mounting groove in the dorsal part in groove that slides, the opening orientation of mounting groove is kept away from one side of handle, be equipped with contact support return spring in the mounting groove, contact support return spring's terminal butt is on insulating casing.
Furthermore, the hasp is equipped with the third erection column in the one end of keeping away from the spacing portion of second, the cartridge has two golden trip bars on the third erection column.
Furthermore, a coil is arranged in the insulating shell, and an acute angle beta facing the direction of the coil is formed between a plane formed by central lines at two ends of the U-shaped rod and a limiting surface of the first limiting part supported by the contact.
After the technical scheme is adopted, compared with the background art, the utility model, have following advantage:
the utility model discloses in contact support and hasp coaxial just rotationally locate the insulating casing, and be equipped with hasp return spring in junction between them, be formed with the enclosure running-on that is used for restricting U type pole slip-in sliding groove between contact support and the hasp, change through enclosing the running-on makes contact support beat, the moving contact separates/contacts with the contact along with the beat that the contact supported, thereby realize closing and separating brake of circuit breaker, only can replace the operation combination of market contact support + hasp + jump knot + linkage with the operation combination of contact support + hasp, circuit breaker operating device's subassembly is few, moreover, the steam generator is simple in structure, the production technology who has simplified, the production cost of circuit breaker has been reduced, and simultaneously, because the subassembly is few, the required time of operating device action still less, divide the branch to divide the time shorter, and then the sensitivity of circuit breaker has been improved.
Drawings
Fig. 1 is a schematic structural diagram (opening) of a circuit breaker to which the present invention is applied;
FIG. 2 is a schematic structural view of the front side of the present invention;
fig. 3 is a schematic structural view of the rear side of the present invention;
fig. 4 is an exploded view of the present invention;
fig. 5 is a schematic structural view of the front side of the contact support of the present invention;
fig. 6 is a schematic structural view of the rear side of the contact support of the present invention;
fig. 7 is a schematic structural view of the lock of the present invention;
fig. 8 is a schematic structural diagram (closing) of the circuit breaker according to the present invention.
Description of reference numerals:
a handle 100, a handle return spring 110;
a U-shaped rod 200, a first end 210, a second end 220;
the contact structure comprises an insulating shell 300, a contact 310, a moving contact 320, a second mounting hole 321, a connecting shaft 330, bimetal 340 and a coil 350;
the contact support 400, the sliding groove 410, the first limiting part 411, the first sub-limiting part 412, the first mounting hole 420, the first limiting card 430, the mounting groove 440, the second mounting column 450 and the third limiting card 460;
the lock catch 500, the second limiting part 510, the second sub-limiting part 511, the first mounting post 520, the second limiting clip 530 and the third mounting post 540;
a latch return spring 600;
a contact pressure spring 700;
the contact supports a return spring 800;
a bimetallic trip bar 900.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, and are only for convenience of description and simplification of the present invention, but do not indicate or imply that the device or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
As shown in fig. 1 to 3, the present invention discloses an operating mechanism of a miniature circuit breaker, which comprises a handle 100, a U-shaped rod 200 connected to the handle 100, a contact 310 and a moving contact 320 in an insulating housing 300, and further comprises a contact support 400, a latch 500, a latch return spring 600 and a contact pressure spring 700.
The handle 100 is provided with a handle return spring 110, and in the present embodiment, the handle return spring 110 is a torsion spring that is used to bias the handle 100 in the opening direction. The two ends of the U-shaped rod 200 are respectively formed with a first end portion 210 and a second end portion 220, the first end portion 210 is inserted on the handle 100, and the second end portion 220 extends into the limiting loophole.
As shown in fig. 2, fig. 3, fig. 5 and fig. 7, the contact support 400 and the latch 500 are coaxially and rotatably disposed in the insulating housing, the contact support 400 is provided with a sliding groove 410, the sliding groove 410 is an inclined groove, the sliding groove 410 is provided with a first limiting portion 411 at a notch position thereof, the first limiting portion is disposed at a drop distance from a lower side edge of the sliding groove 410, and the latch 500 is provided with a second limiting portion 510 (in a folded shape facing the first limiting portion 411), so that an enclosing opening is formed between the second limiting portion 510 and the first limiting portion 411, and the enclosing opening is used for limiting the other end of the U-shaped rod 200, which is far away from the handle 100, from sliding into the sliding groove 410. In the present embodiment, the first position-limiting portion 411 is formed with a first sub-position-limiting portion 412, and the second position-limiting portion 510 is formed with a second sub-position-limiting portion 511 corresponding to the first sub-position-limiting portion 412.
A lock return spring 600 is arranged at the rotary connection position of the contact support 400 and the lock 500, and the movable contact 320 is rotationally connected to the contact support 400 through a contact pressure spring 700, so that the movable contact 320 swings along with the contact support 400 to separate/contact the movable contact 320 from/with the contact 310.
In this embodiment, the operating mechanism further includes a connecting shaft 330, the connecting shaft 330 is disposed in the insulating housing, the contact support 400 is provided with a first mounting hole 420, the latch 500 is provided with a hollow first mounting post 520,
the connecting shaft 330 is inserted into the first mounting hole 420 and the first mounting post 520 in sequence from bottom to top. In this embodiment, the contact support 400 is provided with a first position-limiting clip 430 at a side of the first mounting hole 420, the latch 500 is provided with a second position-limiting clip 530 at a side of the first mounting post 520, the latch return spring 600 is a torsion spring, and is sleeved on the first mounting post 520, and two legs of the latch return spring 600 abut against the first position-limiting clip 430 and the second position-limiting clip 530, respectively.
As shown in fig. 3, 4, 6 and 7, the contact support 400 has a mounting groove 440 at the back side of the sliding groove 410, the opening of the mounting groove 440 faces away from the handle 100, a contact support return spring 800 is disposed in the mounting groove 440, and the end of the contact support return spring 800 abuts against the insulating housing 300.
As shown in fig. 2 to fig. 7, the contact support 400 is provided with a second mounting post 450 on a back side away from the sliding slot 410, the movable contact 320 is provided with a second mounting hole 321, and the movable contact 320 is inserted into the second mounting post 450 through the second mounting hole 321 and connected to the second mounting post 450 through the contact pressure spring 700. In this embodiment, a third limiting clip 460 is disposed on a side of the second mounting post 450, the contact pressure spring 700 is a torsion spring, and is sleeved on the second mounting post 450, one leg of the contact pressure spring 700 abuts against the third limiting clip 460, and the other leg is hooked on the movable contact 320. The movable contact 320 is biased together with the contact support 400 by the contact pressure spring 700, ensuring that the movable contact 320 is separated from/in contact with the contact 310.
The lock catch 500 is provided with a third mounting post 540 at an end away from the second limiting portion 510, and a bimetallic trip rod 900 is inserted on the third mounting post 540. One end cartridge of two gold trip lever 900 is on third erection column 540, two gold 340 swing joint in the other end and the insulating casing (the connected mode between two gold trip lever and the two gold can adopt the connection structure in the current circuit breaker, so the utility model discloses well no repeated description is done), and when short circuit or overload fault appear, two gold 340 warp, makes two gold trip lever 900's position change, and then makes the position between its and hasp 500 also change.
The working principle of the utility model is as follows:
according to the switching-on principle, the second end portion 220 of the U-shaped rod 200 is limited by the opening, the second end portion 220 acts on a limiting surface formed by the first limiting portion 411 of the contact support, so that the contact support 400 swings towards the switching-on direction, the movable contact 320 is in contact with the contact 310, at the moment, due to the limiting effect of the opening, the whole operating mechanism is in a clamping state, namely, the handle return spring 110 and the contact support return spring 800 store energy. In a closed state, referring to fig. 8, a coil 350 is disposed in the insulating housing, and an acute angle β facing the coil 350 is formed between a plane formed by center lines of the first end 210 and the second end 220 of the U-shaped rod 200 and a limit surface of the first limit portion 411 of the contact support 400.
According to the opening principle, when a product is abnormally opened (namely, bimetal deformation or an electromagnetic tripping system of the circuit breaker acts), the lock catch 500 swings towards the opening direction, at the moment, the limiting function surrounding the movable opening is damaged, and the second end part 220 slides into the sliding groove 410; under the action of the latch return spring 600 (energy release), the contact support 400 makes the second sub-limiting part 511 of the latch 500 contact with the first sub-limiting part 412 of the contact support 400, so that the second sub-limiting part and the contact support 400 form a surrounding movable opening again, under the action of the contact support return spring 800 (energy release), the contact support 400 and the latch 500 swing together in the opening direction, and meanwhile, the moving contact 320 swings to the side far away from the contact 310 until the moving contact 320 is separated from the contact 310; under the restoring force action of the handle return spring 110, the handle 100 swings towards the opening direction to drive the U-shaped rod 200 to move, so that the second end part 220 enters the surrounding movable opening from the sliding groove 410, and the whole operating mechanism is in a clamping state due to the limiting effect of the surrounding movable opening on the second end part 220.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides an operating device of miniature circuit breaker, includes handle, U type pole, locates contact and moving contact in the insulating casing, the one end of U type pole links to each other its characterized in that with the handle: also comprises a contact support, a lock catch return spring and a contact pressure spring, wherein the handle is provided with a handle return spring, the contact support and the lock catch are coaxially and rotatably arranged in the insulating shell, a sliding groove is arranged on the contact support, the notch of the sliding groove is provided with a first limiting part which is arranged in a fall way with the edge of the lower side groove, the lock catch is provided with a second limiting part, and an enclosing movable opening is formed between the second limiting part and the first limiting part and used for limiting the other end of the U-shaped rod, which is far away from the handle, from sliding into the sliding groove, the lock catch return spring is arranged at the rotary connection position of the contact support and the lock catch, the moving contact is rotationally connected to the contact support through the contact pressure spring, so that the moving contact supports deflection along with the contact to separate/contact the moving contact from/with the contact.
2. An operating mechanism of a small size circuit breaker according to claim 1, wherein: the first limiting part is provided with a first sub-limiting part, and the second limiting part is provided with a second sub-limiting part corresponding to the first sub-limiting part.
3. An operating mechanism of a small size circuit breaker according to claim 1, wherein: the connecting shaft is arranged in the insulating shell, a first mounting hole is formed in the contact support, a hollow first mounting column is arranged on the lock catch, and the connecting shaft is inserted into the first mounting hole and the first mounting column from bottom to top in sequence.
4. An operating mechanism of a small size circuit breaker according to claim 3, wherein: the contact supports and is equipped with first spacing card in the side of first mounting hole, the hasp is equipped with the spacing card of second in the side of first erection column, hasp return spring adopts the torsional spring, and its cover is located on the first erection column, two stitch of hasp return spring respectively the butt in on first spacing card and the spacing card of second.
5. An operating mechanism of a small size circuit breaker according to claim 1, wherein: the contact supports that the dorsal part far away from the sliding groove is provided with a second mounting column, the moving contact is provided with a second mounting hole, and the moving contact is inserted on the second mounting column through the second mounting hole and is connected with the second mounting column through the contact pressure spring.
6. An operating mechanism of a small size circuit breaker according to claim 5, wherein: the side of the second mounting column is provided with a third limiting clamp, the contact pressure spring is a torsion spring and is sleeved on the second mounting column, one stitch of the contact pressure spring is abutted against the third limiting clamp, and the other stitch of the contact pressure spring is hooked on the movable contact.
7. An operating mechanism of a small size circuit breaker according to claim 1, wherein: the contact supports and is equipped with a mounting groove in the dorsal part in groove that slides, the opening orientation of mounting groove is kept away from one side of handle, be equipped with contact support return spring in the mounting groove, contact support return spring's terminal butt is on insulating casing.
8. An operating mechanism of a small size circuit breaker according to claim 1, wherein: the hasp is equipped with the third erection column in the one end of keeping away from the spacing portion of second, the cartridge has two golden trip bars on the third erection column.
9. An operating mechanism of a small size circuit breaker according to claim 1, wherein: a coil is arranged in the insulating shell, and an acute angle beta facing the direction of the coil is formed between a plane formed by central lines of two ends of the U-shaped rod and a limiting surface of the first limiting part supported by the contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020414157.XU CN211455631U (en) | 2020-03-26 | 2020-03-26 | Operating mechanism of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020414157.XU CN211455631U (en) | 2020-03-26 | 2020-03-26 | Operating mechanism of miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211455631U true CN211455631U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020414157.XU Active CN211455631U (en) | 2020-03-26 | 2020-03-26 | Operating mechanism of miniature circuit breaker |
Country Status (1)
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| CN (1) | CN211455631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135048A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Linkage device comprising lock, movable contact seat and movable contact of circuit breaker |
-
2020
- 2020-03-26 CN CN202020414157.XU patent/CN211455631U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135048A1 (en) * | 2020-12-25 | 2022-06-30 | 浙江奥来电器有限公司 | Linkage device comprising lock, movable contact seat and movable contact of circuit breaker |
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