阅读说明：本技术 一种双储能弹簧脱扣器及永磁塑壳断路器 (Double-energy-storage spring release and permanent magnet molded case circuit breaker ) 是由 侯学强 王震 夏刚强 郑鹏 于 2021-08-20 设计创作，主要内容包括：一种双储能弹簧脱扣器及永磁塑壳断路器,其特征在于：包括固定支架、电磁脱扣单元、储能支撑件、第一储能弹性件、跳扣、复位弹性件、操作杆、第二储能弹性件。其优点在于：同时设置有第一储能弹性件与第二储能弹性件两组储能弹性件,因此大大增加了其脱口力度,确保脱扣动作稳定可靠,不仅整体布局合理紧凑,结构简单。(The utility model provides a two energy storage spring release and permanent magnetism moulded case circuit breaker which characterized in that: the electromagnetic tripping device comprises a fixed support, an electromagnetic tripping unit, an energy storage supporting piece, a first energy storage elastic piece, a tripping buckle, a resetting elastic piece, an operating rod and a second energy storage elastic piece. The advantages are that: the two groups of energy storage elastic pieces of the first energy storage elastic piece and the second energy storage elastic piece are arranged at the same time, so that the opening releasing force is greatly increased, the stable and reliable releasing action is ensured, and the whole layout is reasonable and compact and the structure is simple.)

1. The utility model provides a two energy storage spring release which characterized in that: comprises that

A fixed bracket (1);

the electromagnetic tripping unit (2) is fixedly arranged on the fixed bracket (1);

the energy storage supporting piece (3) is arranged on the fixed bracket (1) in a vertically sliding manner;

the first energy storage elastic part (4) is connected with the energy storage supporting part (3) and can drive the energy storage supporting part (3) to slide downwards;

the jump buckle (5) is rotatably arranged on the fixed support (1) and is positioned above the energy storage support (3), one end of the jump buckle (5) corresponds to the movable iron core (23) of the electromagnetic tripping unit (2), and the other end of the jump buckle can be buckled with the energy storage support (3) mutually;

the reset elastic piece (6) is connected with the jump buckle (5) and can drive the jump buckle (5) to reset so that one end of the jump buckle (5) moves towards the movable iron core (23) and the other end of the jump buckle is buckled with the energy storage supporting piece (3);

the operating rod (7) is hinged with the fixed support (1) and is in linkage connection with the energy storage support (3);

and the second energy storage elastic piece (8) is connected with the operating rod (7) and can drive the operating rod (7) to rotate downwards.

2. The dual energy spring release of claim 1, wherein: the fixing support (1) comprises a fixing side plate (11) and a U-shaped support (12), wherein one side wall of the U-shaped support (12) is fixedly connected with the fixing side plate (11); the electromagnetic tripping unit (2) is fixedly installed on a bottom plate of the U-shaped support (12), and the energy storage support piece (3) is matched with the side wall of the U-shaped support (12) in a sliding mode.

3. The dual energy spring release of claim 2, wherein: the electromagnetic tripping device is characterized in that the electromagnetic tripping unit (2) comprises a coil frame (21), a coil (22) wound on the coil frame (21), a movable iron core (23) penetrating through the center of the coil frame (21), a fixed iron core (24) fixed at the lower end of the coil frame (21) and a permanent magnet (25), a fixing sheet (26) is connected between the bottom of the electromagnetic tripping unit (2) and the U-shaped support (12), and an upper pressing sheet (27) is connected between the upper end of the electromagnetic tripping unit (2) and the U-shaped support (12).

4. The dual energy spring release of claim 1, wherein: a spring positioning groove (31) is formed on the energy storage supporting piece (3), a spring supporting plate (13) is correspondingly formed on the fixing support (1), and a spring positioning boss (131) is formed at the bottom of the spring supporting plate (13); the first energy storage elastic part (4) is a spring, one end of the first energy storage elastic part is arranged in the spring positioning groove (31), and the other end of the first energy storage elastic part is sleeved outside the spring positioning boss (131) and abuts against the spring supporting plate (13).

5. The dual energy spring release of claim 2, wherein: two connecting arms (71) which are arranged in parallel are formed at one end of the operating rod (7), the connecting arms (71) are arranged on two sides of the U-shaped bracket (12), one end, far away from the operating rod (7), of each connecting arm (71) is hinged to the U-shaped bracket (12), and one end, close to the operating rod (7), of each connecting arm (71) is connected through a transmission shaft (9); the energy storage support piece (3) is provided with two groups of transmission bosses (33) which are arranged at intervals up and down in a protruding mode, and the transmission shaft (9) is arranged between the two groups of transmission bosses (33).

6. The dual energy spring release of claim 5, wherein: and the second energy storage elastic part (8) adopts a tension spring, and two ends of the second energy storage elastic part are respectively connected with the fixed side plate (11) and the operating rod (7).

7. The dual energy spring release of claim 2, wherein: the bottom of the fixed side plate (11) is integrally formed with an installation plate (14), and a connecting part (111) bent to be 7-shaped is formed between the fixed side plate (11) and the installation plate (14).

8. A permanent magnet molded case circuit breaker is characterized in that: comprising the dual charging spring release of any of claims 1-7.

Technical Field

The invention relates to a molded case circuit breaker, in particular to a double-energy-storage spring release and a permanent magnet molded case circuit breaker.

Background

The permanent magnet operating mechanism is a novel mechanism replacing the traditional spring energy storage connecting rod mechanism, and generally, the permanent magnet mechanism needs a proper electronic control unit which is used for providing proper energy for a mechanism coil and realizing the functions of preventing jumping, locking, connecting with a switch device and the like.

At present, a permanent magnet molded case circuit breaker is not provided with a tripping unit, mostly adopts a super capacitor to directly drive a coil of a permanent magnet mechanism, and has the permanent magnet mechanism to realize opening and closing actions, but the voltage required by the super capacitor is very large, when a circuit generates short-circuit current, the power voltage is almost zero, and at the moment, a product cannot play a role in protection and cannot cut off the short-circuit current.

However, the conventional small spring release has a small force for releasing the opening, and even if the spring release is added to the permanent magnet molded case circuit breaker, the permanent magnet mechanism is difficult to open, and an effective tripping action is difficult to realize.

Disclosure of Invention

In order to overcome the defects of the background art, the invention provides a double-energy-storage spring release and a permanent magnet molded case circuit breaker.

The technical scheme adopted by the invention is as follows: a double energy storage spring release comprises

Fixing a bracket;

the electromagnetic tripping unit is fixedly arranged on the fixed bracket;

the energy storage supporting piece is arranged on the fixed bracket in a vertically sliding manner;

the first energy storage elastic piece is connected with the energy storage supporting piece and can drive the energy storage supporting piece to slide downwards;

the jump buckle is rotatably arranged on the fixed support and is positioned above the energy storage supporting piece, one end of the jump buckle corresponds to the movable iron core of the electromagnetic tripping unit, and the other end of the jump buckle can be buckled with the energy storage supporting piece;

the reset elastic piece is connected with the jump buckle and can drive the jump buckle to reset so that one end of the jump buckle moves towards the movable iron core, and the other end of the jump buckle is buckled with the energy storage supporting piece;

the operating rod is hinged with the fixed support and is in linkage connection with the energy storage support;

and the second energy storage elastic piece is connected with the operating rod and can drive the operating rod to rotate downwards.

The fixed support comprises a fixed side plate and a U-shaped support, wherein one side wall of the U-shaped support is fixedly connected with the fixed side plate; the electromagnetic tripping unit is fixedly installed on a bottom plate of the U-shaped support, and the energy storage support piece is matched with the side wall of the U-shaped support in a sliding mode.

The electromagnetic tripping unit comprises a coil framework, a coil wound on the coil framework, a movable iron core penetrating through the center of the coil framework, a static iron core fixed at the lower end of the coil framework and a permanent magnet, wherein a fixing sheet is connected between the bottom of the electromagnetic tripping unit and the U-shaped support, and an upper pressing sheet is connected between the upper end of the electromagnetic tripping unit and the U-shaped support.

A spring positioning groove is formed on the energy storage supporting piece, a spring supporting plate is correspondingly formed on the fixing support, and a spring positioning boss is formed at the bottom of the spring supporting plate; the first energy storage elastic element is a spring, one end of the first energy storage elastic element is arranged in the spring positioning groove, and the other end of the first energy storage elastic element is sleeved outside the spring positioning boss and abuts against the spring supporting plate.

Two connecting arms which are arranged in parallel are formed at one end of the operating rod, the connecting arms are arranged on two sides of the U-shaped bracket, one end, far away from the operating rod, of each connecting arm is hinged with the U-shaped bracket, and one end, close to the operating rod, of each connecting arm is connected through a transmission shaft; the energy storage support piece is provided with two groups of transmission bosses which are arranged at intervals up and down in a protruding mode, and the transmission shaft is arranged between the two groups of transmission bosses.

The second energy storage elastic part adopts a tension spring, and two ends of the second energy storage elastic part are respectively connected with the fixed side plate and the operating rod.

The bottom of the fixed side plate is integrally formed with an installation plate, and a connecting part bent to be 7-shaped is formed between the fixed side plate and the installation plate.

A permanent magnet molded case circuit breaker comprises the double-energy-storage spring release.

The invention has the beneficial effects that: by adopting the scheme, the two groups of energy storage elastic parts of the first energy storage elastic part and the second energy storage elastic part are arranged simultaneously, so that the opening releasing force is greatly increased, the releasing action is stable and reliable, the overall layout is reasonable and compact, and the structure is simple.

Drawings

Fig. 1 is a schematic structural diagram of a dual energy-storage spring release according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a dual energy-storage spring release at another angle according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the dual energy-storage spring release according to the embodiment of the present invention, with a part of the structure omitted.

Fig. 4 is a cross-sectional view of a dual energy spring release in accordance with an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of an energy storage support according to an embodiment of the invention.

Fig. 6 is a schematic structural diagram of an operation lever according to an embodiment of the present invention.

Detailed Description

The embodiments of the invention will be further described with reference to the accompanying drawings in which:

as shown in the figure, the double-energy-storage spring release comprises a fixing support 1, an electromagnetic release unit, an energy-storage support 3, a first energy-storage elastic part 4, a jump buckle 5, a reset elastic part 6, an operating rod 7 and a second energy-storage elastic part 8.

The fixed bracket 1 comprises a fixed side plate 11 and a U-shaped bracket 12.

The bottom of the fixed side plate 11 is integrally formed with an installation plate 14, the installation plate 14 is formed with an installation hole, and the fixed bracket 1 can be fixedly installed on the inner side wall of the molded case circuit breaker through the installation plate 14. Wherein, be formed with the connecting portion 111 that buckles and be "7" font between fixed curb plate 11 and the mounting panel 14, so set up and can make when installing fixed curb plate 11 in the moulded case circuit breaker for fixed curb plate 11 can hug closely moulded case circuit breaker's inside wall as far as possible, reduces the whole occupation space of two energy storage spring release, and the overall arrangement is more reasonable, can guarantee again that mounting panel 14 has sufficient erection joint area moreover, ensures reliable fixed mounting, simultaneously convenient operation again.

U type support 12 is the U type, and its one of them lateral wall is equipped with the side and is equipped with the installation department 121 that buckles and be "L" type to through bolt fixed mounting on fixed curb plate 11, consequently after U type support 12 installed on fixed curb plate 11, there is the spacing distance between its main part and the fixed curb plate 11, so that follow-up action bars 7's erection joint.

The electromagnetic tripping unit 2 is fixedly installed on a bottom plate of the U-shaped support 12, the electromagnetic tripping unit 2 comprises a coil frame 21, a coil 22 wound on the coil frame 21, a movable iron core 23 penetrating through the center of the coil frame 21, a static iron core 24 fixed at the lower end of the coil frame 21 and a permanent magnet 25, the permanent magnet 25 is connected with the bottom of the U-shaped support 12, the movable iron core 23 is in contact with the static iron core 24 under the action of the permanent magnet 25 during normal work, once the short circuit problem occurs, the movable iron core 23 and the static iron core 24 are mutually repelled, the movable iron core 23 is ejected rapidly, and tripping action is realized.

Wherein, a fixing plate 26 is connected between the bottom of the electromagnetic tripping unit 2 and the U-shaped bracket 12, an upper pressing plate 27 is connected between the upper end of the electromagnetic tripping unit 2 and the U-shaped bracket 12, and the electromagnetic tripping unit 2 is reliably limited on the U-shaped bracket 12 through the fixed connection of the fixing plate 26, the upper pressing plate 27 and the U-shaped bracket 12.

Energy storage support piece 3 sets up in U type support 12 to sliding fit about constituting with the both sides wall of U type support 12, energy storage support piece 3 upper end is formed with spring positioning slot 31, hasp 32, then be formed with two sets of transmission bosss 33 that set up from top to bottom on the relative electromagnetism dropout unit 2's of energy storage support piece 3 opposite side lateral wall, two sets of transmission play platform 33 between be formed with certain spacing distance.

The first energy storage elastic part 4 is a spring, a spring support plate 13 corresponding to the spring positioning groove 31 is fixedly arranged at the upper end of the U-shaped support 12, and a spring positioning boss 131 is formed at the bottom of the spring support plate 13; one end of the first energy storage elastic element 4 is arranged in the spring positioning groove 31, the other end of the first energy storage elastic element is sleeved outside the spring positioning boss 131 and abuts against the spring supporting plate 13, and the first energy storage elastic element 4 can drive the energy storage supporting element 3 to slide downwards.

Jump and detain 5 and rotatably install on U type 12 through the pivot to be located energy storage support piece 3's top, jump and detain 5 and be the L type, its one end is corresponding with the movable iron core 23 of electromagnetism dropout unit 2, and the other end can be with the mutual lock of hasp 32 of energy storage support piece 3, the elastic component 6 that resets is the torsional spring to the setting is in the pivot, and the torsional spring can order about jump and detain 5 reset action and make jump and detain 5 one end and move movable iron core 23 orientation, and the other end forms the lock with energy storage support piece 3.

Operating rod 7 one end is formed with two parallel arrangement's linking arm 71, linking arm 71 sets up the both sides at U type support 12, the one end that operating rod 7 was kept away from to linking arm 71 is articulated with U type support 12, the one end that linking arm 71 is close to operating rod 7 is passed through transmission shaft 9 and is connected, transmission shaft 9 sets up between two sets of transmission bosss 33, constitutes the linkage with energy storage support piece 3 and is connected, second energy storage elastic component 8 is the extension spring, and its one end is connected with the end connection of operating rod 7, and the other end is connected with the mounting panel 14 of fixed curb plate 11, can order about the operating rod 7 rotation downwards.

The working principle of the double-energy-storage spring release is as follows:

when the breaker is switched on, the operating mechanism of the breaker can push the operating rod 7 to rotate upwards, the rotating action of the operating rod 7 can enable the tension spring to be stretched to form a first elastic energy storage effect, the operating rod 7 rotates upwards and simultaneously can drive the energy storage supporting piece 3 to slide upwards along the U-shaped support 12 through the transmission shaft 9, the sliding action of the energy storage supporting piece 3 can enable the spring to be compressed to form a second elastic energy storage effect, and when the operating rod 7 and the energy storage supporting piece 3 are in place, the lock catch 32 of the energy storage supporting piece 3 is buckled with the jump buckle 5;

when faults such as short circuit break, the movable iron core of the electromagnetic tripping unit 2 acts, and can push the trip buckle 5 to rotate, the energy storage support piece 3 loses the mutual buckling effect of the trip buckle 5 and the lock catch 32, the energy storage support piece 3 moves downwards under the action of the spring, the energy storage support piece 3 drives the operating rod 7 to rotate downwards through the transmission shaft 9, and meanwhile, the operating rod 7 rotates downwards under the action of the tension spring, namely, the spring and the tension spring release elastic force simultaneously, the operating rod 7 is driven to rotate downwards quickly, the operating mechanism of the circuit breaker is stirred by the operating rod 7, and the breaking action is realized.

By adopting the double-energy-storage spring release, the first energy-storage elastic piece and the second energy-storage elastic piece are arranged, so that the opening releasing force is greatly increased, and the stable and reliable releasing action is ensured.

The double-energy-storage spring release can be suitable for the permanent magnet molded case circuit breaker, and because the opening releasing force is very large, the permanent magnet mechanism of the permanent magnet molded case circuit breaker can be effectively opened, so that the product can be effectively tripped, the required voltage is very small, and the problem that the conventional permanent magnet molded case circuit breaker cannot be tripped and released due to short circuit is solved.

Of course, the above-mentioned dual energy-storage spring release is not limited to the permanent magnet molded case circuit breaker, but also can be applied to other types of molded case circuit breakers.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.