CN109326495B - But quick closing's miniature circuit breaker - Google Patents
But quick closing's miniature circuit breaker Download PDFInfo
- Publication number
- CN109326495B CN109326495B CN201811363074.6A CN201811363074A CN109326495B CN 109326495 B CN109326495 B CN 109326495B CN 201811363074 A CN201811363074 A CN 201811363074A CN 109326495 B CN109326495 B CN 109326495B
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- Prior art keywords
- circuit breaker
- miniature circuit
- quick
- wall
- energy storage
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- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
- H01H71/521—Details concerning the lever handle
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- Breakers (AREA)
Abstract
A miniature circuit breaker capable of being closed quickly. Mainly solves the problem of slower closing speed of the existing circuit breaker. The method is characterized in that: be equipped with on the operating handle with operating handle pivoted brake piece (5), be equipped with arch (51) on the brake piece circumference wall, on the support with the retaining wall (21) that the arch corresponds the setting, moving contact one side is equipped with the stationary contact, the opposite side is equipped with energy storage spring (31), protruding including when stretching into spacing protruding corresponds to be located dodge the inslot first position with the fixed orifices with after the boss installation is accomplished spacing protruding corresponds the second position of locating brake piece top. The invention provides a small-sized breaker capable of being rapidly closed, and the movable contact is rapidly driven to be closed by storing energy through the energy storage spring during closing, so that the use effect is better.
Description
Technical Field
The invention belongs to the field of piezoelectric devices, and particularly relates to a small-sized circuit breaker capable of being rapidly closed.
Background
The miniature circuit breaker has the characteristics of advanced structure, reliable performance, strong breaking capacity, attractive and small appearance and the like, and is mainly used for places with alternating current of 50HZ or 60HZ, rated voltage of below 400V and rated working current of below 125A. It can be used for the overload and short-circuit protection of office building, house and similar building, distribution line and equipment, and can also be used for the infrequent on-off operation and conversion of line, and can be used in various places of industry, business, high-rise and civil houses.
The main components in the miniature circuit breaker are an operating mechanism and a contact device, and the functions of opening and closing a circuit, overload and short-circuit protection are realized by configuring a corresponding time delay and instantaneous mechanism. In the breaking technology, short-circuit current is utilized to generate electric repulsive force at the contact points of the movable contact and the static contact so as to draw an arc in advance before the instantaneous mechanism does not act, and the aim of limiting current is achieved by means of an arc resistor formed by an arc.
In the prior art, when in closing operation, the handle rotates to drive the U-shaped bolt and further drive the lock catch to move, and the lock catch drives the contact system to be closed. During operation, the torsion spring torque of the handle increases with the angle of rotation of the handle, and the contact system closes during the gradual increase of the torsion spring torque. The closing speed of the contact system is thus still related to the manual speed, which affects the reliability of the closing and the operating life of the product. Therefore, the circuit breaker needs a quick closing function to improve reliability of the product.
Disclosure of Invention
In order to overcome the defects of the background technology, the invention provides a small-sized circuit breaker capable of being closed quickly, which mainly solves the problem that the closing speed of the traditional circuit breaker is low.
The technical scheme adopted by the invention is as follows:
a small-sized breaker capable of being closed quickly comprises a shell, wherein a fixed contact and a rotatable bracket are arranged in the shell, a movable contact is hinged on the bracket, an operating handle is also included,
the operating handle is provided with a braking part which rotates along with the operating handle, the circumferential wall of the braking part is provided with a bulge, the bracket is provided with a blocking wall which is arranged corresponding to the bulge, one side of the moving contact is provided with the fixed contact, the other side of the moving contact is provided with an energy storage spring,
the boss comprises a first position, which is correspondingly arranged in the avoidance groove when the boss extends in, and a second position, which is correspondingly arranged above the braking piece, when the fixing hole and the boss are installed.
The retaining wall is provided with a tip, and the protrusion is provided with a groove in abutting fit with the tip.
The top of the retaining wall is provided with a first sliding surface, and the bottom of the protrusion is provided with a second sliding surface in sliding fit with the first sliding surface.
The first sliding surface is a circular arc surface.
The support is provided with a rotating shaft, the rotating shaft is sleeved with a torsion spring, the torsion spring is an energy storage spring, and one torsion foot of the torsion spring is propped against the back of the moving contact.
The support is also provided with a lock catch, and the other end of the torsion spring is propped against the outer wall of the lock catch.
The novel anti-theft brake is characterized in that an open slot is formed in the circumferential wall of the handle, a boss is arranged in the open slot, a fixing hole matched with the boss in a clamping mode is formed in the brake axially, a limiting protrusion is arranged on the inner wall of the open slot, an avoidance slot is correspondingly formed in the circumferential direction of the brake and corresponds to the limiting protrusion, and the brake comprises a first position in the let-off slot and a second position in the upper portion of the brake when the brake is inserted in the first position in the let-off slot and corresponds to the limiting protrusion after the fixing hole is completely installed with the boss.
The limit protrusion is provided with three limit protrusions.
The beneficial effects of the invention are as follows: the invention provides a small-sized breaker capable of being rapidly closed, and the movable contact is rapidly driven to be closed by storing energy through the energy storage spring during closing, so that the use effect is better.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic diagram of an internal structure of an embodiment of the present invention.
Fig. 3 is a partial perspective view of an embodiment of the present invention.
Fig. 4 is an enlarged schematic view at a in fig. 3.
Fig. 5 is a partial perspective view of an embodiment of the present invention.
Fig. 6 is a schematic perspective view of a handle and brake member according to one embodiment of the present invention (first position).
Fig. 7 is a schematic cross-sectional view (first position) of a handle and brake of one embodiment of the invention.
Fig. 8 is a schematic perspective view of a handle and brake member according to one embodiment of the present invention (second position).
Fig. 9 is a schematic cross-sectional view of a handle and brake of one embodiment of the present invention (second position).
Fig. 10 is a schematic perspective view of a bracket and a moving contact according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings: as shown in the figure, the miniature circuit breaker capable of being rapidly closed comprises a shell 1, a fixed contact 11 and a rotatable support are arranged in the shell 1, a moving contact 3 is hinged to the support, the miniature circuit breaker further comprises an operating handle 4, a braking part 5 which rotates along with the operating handle is arranged on the operating handle, a protrusion 51 is arranged on the circumferential wall of the braking part, a blocking wall 21 which is arranged on the support and corresponds to the protrusion is arranged on one side of the moving contact, an energy storage spring 31 is arranged on the other side of the moving contact, and the protrusion comprises a first position which is correspondingly arranged in an avoidance groove when the limiting protrusion is inserted, and a second position which is correspondingly arranged above the braking part after the fixing hole and the boss are installed.
When the handle is required to be closed, the braking piece on the handle rotates clockwise along with the handle, the bulge is in contact with the blocking wall, the support is pushed to rotate anticlockwise, the support pushes the movable contact to rotate anticlockwise through the push plate 29, the energy storage spring starts to store energy, the handle is continuously rotated, the lug is staggered with the blocking wall, the energy storage spring releases energy, and the movable contact is pushed to be rapidly closed. The invention provides a small-sized breaker capable of being rapidly closed, and the movable contact is rapidly driven to be closed by storing energy through the energy storage spring during closing, so that the use effect is better.
In this embodiment, as shown in the figure, the blocking wall is provided with a tip 211, and the protrusion is provided with a groove 511 in press fit with the tip 211. When the retaining wall is pressed against the convex block, the tip can be inserted into the groove, so that the use effect is better, and the stress is easier.
In this embodiment, as shown in the figure, the top of the retaining wall is provided with a first sliding surface 212, and the bottom of the protrusion is provided with a second sliding surface 512 in sliding fit with the first sliding surface. Realizing the guiding function.
In this embodiment, as shown in the drawing, the first sliding surface is a circular arc surface.
In this embodiment, as shown in the figure, the support is provided with a rotating shaft, a torsion spring is sleeved on the rotating shaft, the torsion spring is the energy storage spring, and one torsion foot of the torsion spring abuts against the back of the moving contact. Torsion springs are used here, although other elastic members, such as springs, etc., may be used.
In this embodiment, as shown in the figure, a latch 25 is further provided on the support, and the other end of the torsion spring abuts against the outer wall of the latch.
In this embodiment, as shown in the drawing, an open slot 41 is formed in the circumferential wall of the handle, a boss 411 is disposed in the open slot, a fixing hole 52 engaged with the boss is axially formed in the braking member, a limit protrusion 412 is disposed on the inner wall of the open slot, an avoidance slot 53 is correspondingly disposed on the circumferential direction of the braking member and corresponds to the limit protrusion, and the braking member includes a first position in which the limiting protrusion is correspondingly disposed in the let-off slot and a second position in which the limiting protrusion is correspondingly disposed above the braking member after the fixing hole and the boss are mounted. When the brake is installed, the brake is pressed downwards to be matched with the boss in a clamping way (or clearance fit) and then rotated, so that the upper end surface of the brake is positioned below the limiting boss, and the brake is prevented from falling off.
In this embodiment, as shown in the figure, three limit protrusions are provided.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The embodiments described with reference to the drawings are exemplary and intended to be illustrative of the invention and should not be construed as limiting the invention. The examples should not be construed as limiting the invention, but any modifications based on the spirit of the invention should be within the scope of the invention.
Claims (7)
1. The utility model provides a but quick closed's miniature circuit breaker, includes casing (1), be equipped with stationary contact (11) and rotatable support in casing (1), it has moving contact (3) to articulate on the support, still includes operating handle (4), its characterized in that:
the operating handle is provided with a braking part (5) which rotates along with the operating handle, the circumferential wall of the braking part is provided with a bulge (51), the bracket is provided with a blocking wall (21) which is arranged corresponding to the bulge, one side of the moving contact is provided with the fixed contact, the other side of the moving contact is provided with an energy storage spring (31),
an open slot (41) is arranged on the circumferential wall of the operating handle, a boss (411) is arranged in the open slot, a fixing hole (52) which is matched with the boss in a clamping way is axially arranged on the braking piece, a limit bulge (412) is arranged on the inner wall of the open slot, an avoidance slot (53) which is correspondingly arranged with the limit bulge is circumferentially arranged on the braking piece,
the limiting protrusion is correspondingly arranged at a first position and in the avoidance groove when the braking piece stretches into the opening groove
The limiting protrusion is correspondingly arranged at a second position above the braking piece after the fixing hole and the boss are installed;
the bulge is used for contacting with the blocking wall, pushing the bracket to rotate anticlockwise and driving the energy storage spring to store energy, and when the bulge is staggered with the blocking wall, the energy storage spring releases energy to push the movable contact and the fixed contact to be closed.
2. A quick closeable miniature circuit breaker according to claim 1, wherein: the retaining wall is provided with a tip (211), and the protrusion is provided with a groove (511) in abutting fit with the tip (211).
3. A quick-closing miniature circuit breaker according to claim 2, characterized in that: the top of the retaining wall is provided with a first sliding surface (212), and the bottom of the protrusion is provided with a second sliding surface (512) in sliding fit with the first sliding surface.
4. A quick-closing miniature circuit breaker according to claim 3, characterized in that: the first sliding surface is a circular arc surface.
5. A quick closeable miniature circuit breaker according to claim 4, wherein: the support is provided with a rotating shaft, the rotating shaft is sleeved with a torsion spring, the torsion spring is an energy storage spring, and one end of the torsion spring is propped against the back of the moving contact.
6. A quick closeable miniature circuit breaker according to claim 5, wherein: the bracket is also provided with a lock catch (25), and the other end of the torsion spring is propped against the outer wall of the lock catch.
7. A quick closeable miniature circuit breaker according to claim 5, wherein: the braking piece comprises a third position, in which the limiting protrusion is correspondingly arranged in the avoidance groove when the braking piece stretches into the opening groove, and a fourth position, in which the limiting protrusion is correspondingly arranged above the braking piece after the fixing hole and the boss are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811363074.6A CN109326495B (en) | 2018-11-16 | 2018-11-16 | But quick closing's miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811363074.6A CN109326495B (en) | 2018-11-16 | 2018-11-16 | But quick closing's miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109326495A CN109326495A (en) | 2019-02-12 |
| CN109326495B true CN109326495B (en) | 2023-12-29 |
Family
ID=65258341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811363074.6A Active CN109326495B (en) | 2018-11-16 | 2018-11-16 | But quick closing's miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109326495B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1137037A2 (en) * | 2000-03-17 | 2001-09-26 | AEG Niederspannungstechnik GmbH & Co. KG | Remote control using microswitches for electrical switchgear |
| US6323748B1 (en) * | 1999-08-27 | 2001-11-27 | Eaton Corporation | Circuit interrupter with improved handle |
| CN103337426A (en) * | 2013-05-31 | 2013-10-02 | 浙江天正电气股份有限公司 | Micro breaker having rapid closing device |
| CN103632897A (en) * | 2013-10-31 | 2014-03-12 | 上海永继电气股份有限公司 | Operating mechanism of miniature circuit breaker |
| CN206040567U (en) * | 2016-04-29 | 2017-03-22 | 上海良信电器股份有限公司 | Elastic energy storage drive mechanism |
| CN107026031A (en) * | 2017-05-05 | 2017-08-08 | 佳电气有限公司 | instantaneous closing structure and switching device |
| CN207938552U (en) * | 2018-04-06 | 2018-10-02 | 环宇集团浙江高科股份有限公司 | A kind of breaker snap close operation mechanism |
| CN208970469U (en) * | 2018-11-16 | 2019-06-11 | 浙江天正电气股份有限公司 | It is a kind of can quick-make miniature circuit breaker |
-
2018
- 2018-11-16 CN CN201811363074.6A patent/CN109326495B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6323748B1 (en) * | 1999-08-27 | 2001-11-27 | Eaton Corporation | Circuit interrupter with improved handle |
| EP1137037A2 (en) * | 2000-03-17 | 2001-09-26 | AEG Niederspannungstechnik GmbH & Co. KG | Remote control using microswitches for electrical switchgear |
| CN103337426A (en) * | 2013-05-31 | 2013-10-02 | 浙江天正电气股份有限公司 | Micro breaker having rapid closing device |
| CN103632897A (en) * | 2013-10-31 | 2014-03-12 | 上海永继电气股份有限公司 | Operating mechanism of miniature circuit breaker |
| CN206040567U (en) * | 2016-04-29 | 2017-03-22 | 上海良信电器股份有限公司 | Elastic energy storage drive mechanism |
| CN107026031A (en) * | 2017-05-05 | 2017-08-08 | 佳电气有限公司 | instantaneous closing structure and switching device |
| CN207938552U (en) * | 2018-04-06 | 2018-10-02 | 环宇集团浙江高科股份有限公司 | A kind of breaker snap close operation mechanism |
| CN208970469U (en) * | 2018-11-16 | 2019-06-11 | 浙江天正电气股份有限公司 | It is a kind of can quick-make miniature circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN109326495A (en) | 2019-02-12 |
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