阅读说明：本技术 一种断路器的储能合闸结构及其断路器 (Energy storage closing structure of circuit breaker and circuit breaker thereof ) 是由 李子琦 卢权胜 吴碧如 陈志强 陈平 于 2021-08-18 设计创作，主要内容包括：本发明公开了一种断路器的储能合闸结构以及断路器,包括壳体,动触头、静触头和限位组件,限位组件包括限位件和驱动件,限位件设有运动导杆,驱动件设有运动导向槽,通过限位件处在限位位置时阻挡动、静触头接触,以及驱动件带动限位件移动至解锁位置与动触头分离,使动、静触头接触,这样设计的好处在于,通过运动导向槽和运动导杆之间的滑动导向配合实现限位件和驱动件之间的滑动连接,避免使用例如铰接等硬性连接方式,这样利于这种杆和槽的配合方式,使驱动件对限位件施加沿第一方向移动的作用力,且限位件和壳体之间的摩擦阻力不会超过预设范围,从而避免限位杆避在运动过程出现卡滞或断裂等问题,提高产品使用的可靠性和安全性。(The invention discloses an energy storage switching-on structure of a circuit breaker and the circuit breaker, which comprises a shell, a moving contact, a static contact and a limiting assembly, wherein the limiting assembly comprises a limiting part and a driving part, the limiting part is provided with a moving guide rod, the driving part is provided with a moving guide groove, the moving contact and the static contact are prevented from being contacted when the limiting part is at a limiting position, and the driving part drives the limiting part to move to an unlocking position to be separated from the moving contact, so that the moving contact and the static contact are contacted, the design has the advantages that the sliding connection between the limiting part and the driving part is realized through the sliding guide matching between the moving guide groove and the moving guide rod, the rigid connection mode such as hinging is avoided, the matching mode of a rod and the groove is facilitated, the driving part applies an acting force moving along a first direction to the limiting part, the friction resistance between the limiting part and the shell cannot exceed a preset range, and the problems of clamping stagnation or fracture and the like in the moving process of the limiting rod are avoided, the reliability and the safety of the product use are improved.)

1. The utility model provides an energy storage closing structure of circuit breaker, includes casing (1), and sets up moving contact (11), static contact (12) and the drive in casing (1) moving contact (11) with handle mechanism (2) of static contact (12) contact or separation, be provided with on casing (1) and connect energy storage extension spring (13) of moving contact (11), energy storage extension spring (13) are right moving contact (11) are applyed the orientation the elastic tension who static contact (12) removed, its characterized in that still includes:

the limiting assembly comprises a limiting part (3) which is movably arranged on the shell (1) along a first direction and a driving part (4) which is rotatably connected between the handle mechanism (2) and the limiting part (3), the motion trail of the limiting part (3) and the motion trail of the movable contact (11) have an intersection, the limiting part (3) is provided with a limiting position which is abutted against the movable contact (11) in the closing process of the handle mechanism (2) so that the energy storage tension spring (13) can keep energy storage, and an unlocking position which is separated from the movable contact (11) so that the energy storage tension spring (13) can release the energy storage when the handle mechanism (2) is closed in place;

the driving piece (4) and the limiting piece (3) are in sliding connection through a movement guide structure (5), the movement guide structure (5) comprises a movement guide groove (51) which is arranged on the driving piece (4) and extends to intersect with the limiting piece (3), and a movement guide rod (52) which is arranged on the limiting piece (3) and is in sliding connection with the movement guide groove (51), and the driving piece (4) is in sliding fit with the movement guide rod (52) through the movement guide groove (51) in the rotating process to guide the limiting piece (3) to move along a first direction; when the handle mechanism (2) executes closing, the driving part (4) is driven to rotate in the forward direction, and the limiting part (3) is driven by the driving part (4) to move from the limiting position to the unlocking position along the first direction.

2. The energy storage closing structure of the circuit breaker according to claim 1, wherein a limiting sliding groove (14) suitable for the limiting part (3) to slide is formed in the housing (1) in an extending manner along the first direction, a return spring (6) is arranged between the limiting part (3) and the limiting sliding groove (14), the return spring (6) drives the limiting part (3) to move from the unlocking position to the limiting position when the movable contact (11) is separated from the fixed contact (12), and drives the driving part (4) to rotate reversely to the initial position when the limiting part (3) moves.

3. The energy storage closing structure of the circuit breaker according to claim 2, wherein the driving member (4) is rotatably disposed on the housing (1) through a rotating shaft (15) and is connected to the limiting member (3) along a direction perpendicular to the first direction when the handle mechanism (2) is in the opening state, one end of the driving member (4) is driven by the handle mechanism (2), and the other end of the driving member is provided with the motion guide slot (51) and extends to the limiting sliding slot (14).

4. The energy storage closing structure of the circuit breaker according to claim 3, wherein the housing (1) is provided with a limit stop (16) located at one side of the driving member (4), the limit stop (16) is a side wall of the limit chute (14), and the driving member (4) abuts against the limit stop (16) in the process of reverse rotation and is crossed with the limit member (3).

5. The energy storage closing structure of the circuit breaker according to claim 3, wherein the motion guide slot (51) is a slotted hole formed at the other end of the driving member (4), the motion guide rod (52) is a vertical rod formed on the side surface of one side of the limiting member (3), the vertical rod penetrates through the slotted hole, and the driving member (4) pushes the vertical rod to slide back and forth along the slotted hole in the rotating process.

6. The energy storage closing structure of the circuit breaker according to claim 5, wherein the limiting member (3) is a bar-shaped slider extending along the first direction for a set distance, a limiting boss (31) extending in the same direction as the vertical rod is arranged at the bottom end of the limiting member (3), a positioning fixture block (17) matched with the limiting boss (31) is correspondingly arranged on one side wall of the movable contact (11), and when the limiting member (3) is located at the limiting position, the positioning fixture block (17) is in abutting fit with the limiting boss (31) along with the closing rotation of the movable contact (11).

7. The energy storage closing structure of the circuit breaker according to claim 6, wherein the return spring (6) is far away from the limit boss (31) and is arranged at the top end of the limit part (3), the top end of the limit part (3) is provided with a positioning column (32), one end of the return spring (6) is sleeved on the positioning column (32), and the other end of the return spring abuts against the inner wall of the top of the limit chute (14).

8. The energy-storage switching-on structure of the circuit breaker according to any one of claims 1 to 7, characterized in that the handle mechanism (2) comprises an operating handle (21) connected with the driving member (4) and a contact support (22) connected with the operating handle (21) and rotatably arranged in the housing (1), a rotating cavity (23) is arranged in the contact support (22), and the movable contact (11) is rotatably arranged in the rotating cavity (23).

9. The energy storage switching-on structure of the circuit breaker according to claim 8, wherein a rotating groove (24) is formed in one side of the operating handle (21), one end of the driving member (4) extends into the rotating groove (24) in an L-shaped structure, a driving push rod (25) is arranged in the rotating groove (24) and is in fit abutment with one end of the driving member (4), and the driving push rod (25) abuts against one end of the driving member (4) when the operating handle (21) is switched on, so that the driving member (4) is driven to rotate forward.

10. The energy storage switching-on structure of the circuit breaker according to claim 8, wherein a spring mounting groove (18) is formed on the moving contact (11), one end of the energy storage tension spring (13) is hooked in the spring mounting groove (18), and the other end of the energy storage tension spring is sleeved on a spring mounting column (19) of the shell (1).

11. A circuit breaker characterized by comprising the energy storage closing structure of the circuit breaker of any one of claims 1-10.

Technical Field

The invention relates to the technical field of molded case circuit breakers, in particular to an energy storage switching-on structure of a circuit breaker and the circuit breaker.

Background

Low-voltage circuit breakers, also known as automatic air switches, can be used to switch on and off a load circuit, and also to control motors which start infrequently.

Chinese patent document CN205670525U discloses a moving contact operating mechanism of a miniature circuit breaker, which further comprises a moving contact energy storage device, wherein the moving contact energy storage device comprises an energy storage rotating member and an energy storage touch rod, the energy storage rotating member is provided with a first extension arm and a second extension arm, a long groove is arranged on a rotating sleeve of a handle, the end part of the first extension arm is arranged in the long groove, the end part of the second extension arm is hinged with the upper end part of the energy storage touch rod, the energy storage touch rod is arranged between two limiting convex ribs of a base, two symmetrical side walls of the long groove can touch the first extension arm to rotate when the handle rotates, so as to drive the energy storage rotating member to rotate, the energy storage rotating member rotates to drive the second extension arm to swing, the second extension arm swings to realize the up-down movement of the energy storage touch rod, a convex block corresponding to the lower end part of the energy storage touch rod is arranged on a moving contact support, this lug separates the setting with energy storage conflict pole lower tip when the circuit breaker breaks off, and the lug is from separating to press close gradually until conflicting in the side of energy storage conflict pole lower tip, and at this moment the handle continues to rotate and moving contact support stop rotating, and the handle rotation is about to target in place at last, and the lug is released by the side of energy storage conflict pole lower tip when energy storage conflict pole is about to be pushed to the highest position by the energy storage rotation piece, and moving contact support drives the moving contact rapid rotation and realizes closing a floodgate this moment.

The moving contact operating mechanism of the miniature circuit breaker has the following problems in practical use:

1. according to the second extension arm and the energy storage feeler lever be articulated continuous, when second extension arm arc rotates, can drive the energy storage and support the push rod and rotate a lateral tilt and remove to being close to the energy storage, because the energy storage feeler lever reciprocates between two spacing protruding muscle of base, promptly the energy storage feeler lever can continuously extrude and be close to at the removal in-process the spacing protruding muscle of one side is rotated to the energy storage leads to the energy storage feeler lever can produce great frictional resistance when removing to it is big to cause handle combined floodgate resistance, and when circuit breaker switching-in speed was too fast, the energy storage feeler lever appeared the fracture problem easily under the tensile combined action of frictional resistance and second extension arm, leads to the energy storage mechanism of circuit breaker to become invalid, has the potential safety hazard.

Disclosure of Invention

Therefore, the invention aims to solve the technical problem that the potential safety hazard exists because the energy storage mechanism of the circuit breaker fails and the large friction resistance is generated when the energy storage contact rod is driven to obliquely move because the second extension arm and the energy storage contact rod are connected in a hinged mode and transfer motion, and even the energy storage contact rod is broken is solved, thereby providing the energy storage switching-on structure of the circuit breaker, which can reduce the friction resistance when the limiting part moves, avoid the breakage of the limiting part and has high safety.

The invention provides an energy storage closing structure of a circuit breaker, which comprises a shell, a moving contact, a fixed contact and a handle mechanism, wherein the moving contact and the fixed contact are arranged in the shell, the handle mechanism drives the moving contact to be in contact with or separated from the fixed contact, an energy storage tension spring connected with the moving contact is arranged on the shell, and the energy storage tension spring applies elastic tension force moving towards the fixed contact to the moving contact, and the energy storage closing structure also comprises:

the limiting component comprises a limiting part which is movably arranged on the shell along a first direction and a driving part which is rotatably connected between the handle mechanism and the limiting part, the motion trail of the limiting part and the motion trail of the moving contact form an intersection, the limiting part is provided with a limiting position which is abutted against the moving contact in the closing process of the handle mechanism so that the energy storage tension spring keeps energy storage, and an unlocking position which is separated from the moving contact when the handle mechanism is closed in place so that the energy storage tension spring releases energy storage;

the driving piece and the limiting piece form sliding connection through a motion guide structure, the motion guide structure comprises a motion guide groove and a motion guide rod, the motion guide groove is arranged on the driving piece and extends to intersect with the limiting piece, the motion guide rod is arranged on the limiting piece and is connected in the motion guide groove in a sliding mode, and the driving piece is matched with the motion guide rod in a sliding mode through the motion guide groove in a rotating process to guide the limiting piece to move along a first direction; the handle mechanism drives the driving part to rotate in the forward direction when executing closing, and the limiting part is driven by the driving part to move from the limiting position to the unlocking position along the first direction.

In the energy storage closing structure of the circuit breaker, a limiting sliding groove suitable for the limiting part to slide is formed in the shell in an extending mode along the first direction, a return spring is arranged between the limiting part and the limiting sliding groove, the return spring drives the limiting part to move from the unlocking position to the limiting position when the moving contact is separated from the fixed contact, and the driving part is driven to rotate reversely to the initial position in the moving process of the limiting part.

In the energy storage closing structure of the circuit breaker, the driving part is rotatably arranged on the shell through a rotating shaft, the handle mechanism is connected with the limiting part along a first direction perpendicular to the first direction when being in opening, one end of the driving part is driven by the handle mechanism, and the other end of the driving part is provided with the motion guide groove and extends to the limiting sliding groove.

In the energy storage closing structure of the circuit breaker, the shell is provided with a limiting stop table located on one side of the driving piece, the limiting stop table is a side wall of the limiting sliding groove, and the driving piece abuts against the limiting stop table in the reverse rotation process and is crossed with the limiting piece.

In the energy storage closing structure of foretell circuit breaker, the motion guide way is for setting up the slotted hole on the driving piece other end, the motion guide arm for the shaping in perpendicular pole setting on the side of locating part one side, perpendicular pole setting is worn to establish in the slotted hole, the driving piece rotates the in-process and promotes perpendicular pole setting is followed bar slotted hole is reciprocating sliding.

In the energy storage closing structure of the circuit breaker, the limiting part is a strip-shaped slider extending along the first direction for a set distance, a limiting boss extending in the same direction as the vertical rod is arranged at the bottom end of the limiting part, a positioning fixture block matched with the limiting boss is correspondingly arranged on the side wall of one side of the moving contact, and when the limiting part is located at the limiting position, the positioning fixture block is matched with the limiting boss in an abutting mode along with the closing rotation of the moving contact.

In the energy storage closing structure of the circuit breaker, the return spring is far away from the limiting boss and is arranged at the top end of the limiting part, the top end of the limiting part is provided with the positioning column, one end of the return spring is sleeved on the positioning column, and the other end of the return spring is abutted to the inner wall of the top of the limiting sliding groove.

In the energy storage closing structure of the circuit breaker, the handle mechanism comprises an operating handle connected with the driving piece and a contact support which is connected with the operating handle and is rotatably arranged in the shell, a rotating cavity is arranged in the contact support, and the moving contact is rotatably arranged in the rotating cavity.

In the energy storage closing structure of the circuit breaker, one side of the operating handle is provided with a rotating groove, one end of the driving piece is of an L-shaped structure and extends into the rotating groove, a driving push rod is arranged in the rotating groove and is abutted to one end of the driving piece in a matching mode, and the driving push rod is abutted to one end of the driving piece when the operating handle is closed, so that the driving piece is driven to rotate in the forward direction.

In the energy storage closing structure of the circuit breaker, the moving contact is provided with a spring mounting groove, one end of the energy storage tension spring is hooked and abutted in the spring mounting groove, and the other end of the energy storage tension spring is sleeved on the spring mounting column of the shell.

The invention also provides a circuit breaker, which comprises the energy storage switching-on structure of the circuit breaker.

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. in the energy storage closing structure of the circuit breaker, when the circuit breaker is closed, the movable contact moves towards one side of the fixed contact under the combined action of the energy storage tension spring and the handle mechanism, the movable contact is prevented from contacting with the fixed contact when the position limiting part is at the position limiting position, the movable contact and the fixed contact still keep a certain distance at the moment so that the energy storage tension spring keeps energy storage, the handle structure drives the driving part to rotate in the closing process, the limiting part is driven to move from the position limiting position to the unlocking position along the first direction through the sliding fit of the motion guide groove and the motion guide rod when the driving part rotates, and after the handle mechanism is closed in place, the limiting part moves to the unlocking position to be separated from the movable contact, the energy storage tension spring releases energy to drive the movable contact to be contacted with the fixed contact, through sliding guide cooperation between motion guide way and the motion guide arm is realized the locating part with sliding connection between the driving piece avoids using rigid connection mode such as articulated, does benefit to the cooperation mode in this kind of pole and groove like this, makes the driving piece is right the effort that removes along the first direction is applyed to the locating part, just the locating part with frictional resistance between the casing can not exceed and predetermine the scope, thereby avoids the locating part avoids appearing jamming or fracture scheduling problem in the motion process, improves reliability and the security that the product used.

2. In the energy storage switching-on structure of the circuit breaker, when the handle mechanism performs switching-on, the limiting member is driven by the driving member to slide from the limiting position to the unlocking position along the limiting sliding groove, the limiting member extrudes the return spring to deform the return spring in the sliding process, when the handle mechanism performs switching-off, the handle mechanism does not extrude the driving member, namely the limiting member does not extrude the return spring, the return spring elastically resets to drive the limiting member to slide from the unlocking position to the limiting position along the limiting sliding groove, the limiting member drives the driving member to reversely rotate to the initial position in the sliding process, the limiting member is ensured not to deviate from a preset track in the sliding process by setting the limiting sliding groove to guide the sliding direction of the limiting member, and then the return spring is utilized, and realizing the automatic reset function of the limiting part.

3. According to the energy storage closing structure of the circuit breaker, the driving piece is connected with the limiting piece along the direction perpendicular to the first direction when the handle mechanism is in opening state, the distance between the moving guide rod and the rotating shaft is the minimum preset distance, when the handle mechanism is in closing state and rotates, the driving piece is forced to rotate to drive the moving guide rod to slide along the moving guide groove, the distance between the moving guide rod and the rotating shaft is gradually increased, namely, the buffer distance between the driving piece and the limiting piece is increased, the problem of breakage caused by the fact that the limiting piece or the moving guide rod is pulled by the rotation of the driving piece can be effectively avoided, and the safety and reliability of a product in use are improved.

4. According to the energy storage switching-on structure of the circuit breaker, the limiting stop is arranged to limit the reset rotation of the driving piece, so that the limiting piece can smoothly slide and stop at the limiting position under the driving of the reset spring, and the problem that the energy storage switching-on structure is invalid due to the fact that the motion trail of the limiting piece sliding over the head and the moving contact is staggered is solved.

5. According to the energy storage closing structure of the circuit breaker, the limiting boss and the positioning fixture block are arranged, so that the moving contact keeps a certain distance with the fixed contact before the handle mechanism is not closed in place, the energy storage tension spring is stretched to be in an energy storage state, and the moving contact is driven to be in rapid contact with the fixed contact after the energy storage tension spring is closed in place by the handle mechanism.

6. According to the energy storage switching-on structure of the circuit breaker, one end of the return spring is sleeved on the positioning column, and the other end of the return spring abuts against the top of the inner wall of the limiting sliding groove, so that the return spring is prevented from being easily separated from the limiting sliding groove when being extruded and deformed, and the stability of a product in use is improved.

7. According to the energy storage switching-on structure of the circuit breaker, the movable contact is rotatably arranged in the rotating cavity, when the operating handle drives the contact to rotate, the movable contact is driven to abut against the limiting piece, and when the operating handle continues to rotate for switching-on, the contact supports continue to rotate, at the moment, the movable contact abuts against the limiting piece and deflects for a certain angle in the rotating cavity, so that the contact support and the movable contact do not synchronously rotate any more, and the movable contact keeps an energy storage tension state for the energy storage tension spring.

8. According to the energy storage closing structure of the circuit breaker, the rotating groove is arranged to provide a movable space for the driving piece to extend into, the driving piece can be pushed to rotate in the forward direction through the driving push rod only when the operating handle is closed and rotated, and the driving piece and the operating handle are not interfered with each other and rotate in the reverse direction to the initial position under the driving of the reset spring when the operating handle is opened and rotated.

9. The breaker provided by the invention is provided with the energy storage closing structure, so that the breaker naturally has all advantages brought by the energy storage closing structure, related parts of the energy storage closing structure in the breaker are hinged together through parts such as a shaft and a cylinder, a part is formed and then assembled, the automation degree is high, and the mass production and manufacturing of products are facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a circuit breaker provided by the present invention;

fig. 2 is a schematic structural diagram of an energy storage switching structure of a circuit breaker according to the present invention;

fig. 3 is a schematic structural diagram of another angle of the energy storage switching-on structure of the circuit breaker according to the present invention;

fig. 4 is a cross-sectional view of an energy storage closing structure of the circuit breaker shown in fig. 2;

FIG. 5 is an enlarged partial schematic view of the limiting member and the driving member shown in FIG. 2;

FIG. 6 is an enlarged partial schematic view of the housing shown in FIG. 2;

description of reference numerals:

1. a housing; 11. a moving contact; 12. static contact; 13. an energy storage tension spring; 14. a limiting chute; 15. a rotating shaft; 16. a limiting stop table; 17. positioning a fixture block; 18. a spring mounting groove; 19. a spring mounting post;

2. a handle mechanism; 21. an operating handle; 22. a contact support; 23. rotating the cavity; 24. a rotating groove; 25. driving the push rod;

3. a limiting member; 31. a limiting boss; 32. a positioning column;

4. a drive member;

5. a motion guide structure; 51. a motion guide groove; 52. a motion guide bar;

6. a return spring;

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the invention provides an energy storage closing structure of a circuit breaker as shown in fig. 1-6, which comprises a shell 1, a moving contact 11 and a static contact 12 which are arranged in the shell 1, and a handle mechanism 2 for driving the moving contact 11 to be contacted with or separated from the static contact 12, wherein an energy storage tension spring 13 connected with the moving contact 11 is arranged on the shell 1, and the energy storage tension spring 13 applies elastic tension force moving towards the static contact 12 to the moving contact 11, and the energy storage closing structure also comprises:

the limiting component comprises a limiting part 3 which is movably arranged on the shell 1 along a first direction, and a driving part 4 which is rotatably connected between the handle mechanism 2 and the limiting part 3, wherein a motion track of the limiting part 3 and a motion track of the movable contact 11 have an intersection, the limiting part 3 is provided with a limiting position which is abutted against the movable contact 11 in the closing process of the handle mechanism 2 so that the energy storage tension spring 13 can keep energy storage, and an unlocking position which is separated from the movable contact 11 so that the energy storage tension spring 13 can release energy storage when the handle mechanism 2 is closed in place;

the driving part 4 and the limiting part 3 are connected in a sliding manner through a motion guide structure 5, the motion guide structure 5 includes a motion guide groove 51 which is arranged on the driving part 4 and extends to intersect with the limiting part 3, and a motion guide rod 52 which is arranged on the limiting part 3 and is connected in the motion guide groove 51 in a sliding manner, and the driving part 4 is matched with the motion guide rod 52 in a sliding manner through the motion guide groove 51 in the rotating process to guide the limiting part 3 to move along a first direction; when the handle mechanism 2 performs closing, the driving part 4 is driven to rotate in the forward direction, and the limiting part 3 is driven by the driving part 4 to move from the limiting position to the unlocking position along the first direction.

The above-mentioned embodiment is a core technical solution of this embodiment, when the circuit breaker performs a closing operation, the movable contact 11 moves toward one side of the fixed contact 12 under the combined action of the energy storage tension spring 13 and the handle mechanism 2, and the movable contact 11 is stopped from contacting the fixed contact 12 when the position-limiting member 3 is at the position-limiting position, at this time, the movable contact 12 and the fixed contact 12 still keep a certain distance, so that the energy storage tension spring 13 stores energy, the handle structure drives the driving member 4 to rotate during the closing process, the driving member 4 drives the position-limiting member 3 to move from the position-limiting position to the unlocking position along the first direction through the sliding fit of the movement guide slot 51 and the movement guide rod 52 when the driving member 4 rotates, and after the handle mechanism 2 is closed to the position, the position-limiting member 3 moves to the unlocking position to be separated from the movable contact 11, the energy storage tension spring 13 releases the stored energy to drive the movable contact 11 to contact with the fixed contact 12, the advantage of designing like this is, through the motion guide slot 51 with the cooperation of the slip guide between the motion guide arm 52 realizes locating part 3 with sliding connection between the driving piece 4 avoids using rigid connection mode such as articulated, does benefit to the cooperation mode of this kind of pole and groove like this, makes driving piece 4 is right locating part 3 applys the effort that moves along the first direction, just locating part 3 with frictional resistance between the casing 1 can not exceed and predetermines the scope, thereby avoids locating part 3 avoids appearing jamming or fracture scheduling problem in the motion process, improves reliability and the security that the product used.

As shown in fig. 5 and 6, a limiting sliding groove 14 suitable for the limiting member 3 to slide is provided in the housing 1 along the first direction, so as to provide an installation position for the limiting member 3, a return spring 6 is provided between the limiting member 3 and the limiting sliding groove 14, when the handle mechanism 2 performs closing, the limiting member 3 is driven by the driving member 4 to slide from the limiting position to the unlocking position along the limiting sliding groove 14, the limiting member 3 presses the return spring 6 to deform during sliding, and when the handle mechanism 2 performs opening, the handle mechanism 2 does not press the driving member 4, that is, the limiting member 3 does not press the return spring 6, the return spring 6 elastically returns to drive the limiting member 3 to slide from the unlocking position to the limiting position along the limiting sliding groove 14, the limiting part 3 drives the driving part 4 to rotate reversely to an initial position in the sliding process, the limiting sliding chute 14 is arranged to guide the sliding direction of the limiting part 3, the limiting part 3 is ensured not to deviate from a preset track in the sliding process, and then the reset spring 6 is utilized to realize the automatic reset function of the limiting part 3.

As a specific structure setting, driving piece 4 through pivot 15 rotatable set up in casing 1, and handle mechanism 2 when being in the separating brake along the perpendicular to first direction with locating part 3 is connected, this moment movement guide 52 with distance between the pivot 15 is minimum preset distance handle mechanism 2 closes a floodgate and rotates, driving piece 4 atress is rotated and is ordered about movement guide 52 is followed movement guide slot 51 slides, increases gradually movement guide 52 with distance between the pivot 15, promptly through increasing driving piece 4 with the buffer distance of locating part 3, can effectively avoid locating part 3 or movement guide 52 receives the fracture problem that the rotation of driving piece 4 was dragged and is leaded to takes place, has improved security and the reliability when the product uses.

As shown in fig. 5, the housing 1 is provided with a limiting stop 16 located on one side of the driving element 4, the limiting stop 16 is a side wall of the limiting chute 14, the driving element 4 abuts against the limiting stop 16 in the reverse rotation process, and is intersected with the limiting element 3 in a cross manner, the limiting stop 16 is arranged to limit the reset rotation of the driving element 4, so that the limiting element 3 can smoothly slide and stop at the limiting position under the driving of the reset spring 6, and the problem that the energy storage switching-on structure fails due to the fact that the limiting element 3 slides over the moving track of the moving contact 11 and is staggered is avoided.

As a concrete structure setting, motion guide way 51 is for setting up the slotted hole on the driving piece 4 other end, motion guide arm 52 for the shaping in perpendicular pole on the side of 3 one sides of locating part, perpendicular pole is worn to establish in the slotted hole, driving piece 4 rotates the in-process and promotes perpendicular pole is followed the slotted hole is made reciprocating sliding, simple structure, and it is convenient to make the shaping.

The following describes the specific structure of the limiting member 3 in detail with reference to fig. 3 and 5:

the limiting part 3 is a strip-shaped sliding block extending along the first direction for setting a distance, a limiting boss 31 extending in the same direction as the vertical rod is arranged at the bottom end of the limiting part 3, a positioning fixture block 17 matched with the limiting boss 31 is correspondingly arranged on the side wall of one side of the moving contact 11, when the limiting part 3 is located at the limiting position, the positioning fixture block 17 rotates along with the closing of the moving contact 11 and is abutted against and matched with the limiting boss 31, so that the moving contact 11 is kept at a certain distance from the static contact 12 before the handle mechanism 2 is closed in place, the energy storage tension spring 13 is stretched, the energy storage tension spring 13 is enabled to be in an energy storage state, and the moving contact 11 is driven to be in rapid contact with the static contact 12 after the handle mechanism 2 is closed in place.

As shown in fig. 5, the return spring 6 is far away from the limiting boss 31 and is arranged at the top end of the limiting part 3, the top end of the limiting part 3 is provided with a positioning column 32, one end of the return spring 6 is sleeved on the positioning column 32, and the other end of the return spring abuts against the top of the inner wall of the limiting chute 14, so that the return spring 6 is ensured not to easily separate from the limiting chute 14 when being extruded and deformed, and the stability of the product during use is improved.

As a specific structural arrangement, the handle mechanism 2 includes an operating handle 21 connected to the driving member 4, and a contact support 22 connected to the operating handle 21 and rotatably disposed in the housing 1, a rotating cavity 23 is disposed in the contact support 22, the movable contact 11 is rotatably disposed in the rotating cavity 23, when the operating handle 21 drives the contact support 22 to rotate, the movable contact 11 is driven to abut against the limiting member 3, and when the operating handle 21 continues to rotate and close the switch, the contact support 22 continues to rotate, at this time, the movable contact 11 is abutted against the limiting member 3, and is deflected by a certain angle in the rotating cavity 23, so that the contact support 22 and the movable contact 11 do not rotate synchronously, and the movable contact 11 maintains an energy storage tension state for the energy storage tension spring 13, which is further configured, operating handle 21 one side is equipped with rotates groove 24, the one end of driving piece 4 is L shape structure and stretches into rotate in the groove 24, rotate in the groove 24 be equipped with the drive push rod 25 of the one end cooperation butt of driving piece 4, through setting up it does to rotate the groove 24 driving piece 4 provides and stretches into the activity space, only works as when operating handle 21 closes a floodgate and rotates, just can support through drive push rod 25 and push away driving piece 4 forward rotates, and when operating handle 21 separating brake rotates, driving piece 4 with operating handle 21 mutual noninterference, and it is in reverse rotation to initial position under reset spring 6's the drive.

As shown in fig. 2 and 4, a spring mounting groove 18 is provided on the movable contact 11, one end of the energy storage tension spring 13 is hooked in the spring mounting groove 18, and the other end thereof is sleeved on a spring mounting post 19 of the housing 1, so as to ensure that the energy storage tension spring 13 is always in a tensile energy storage state, and the generated elastic tension force always acts on the movable contact 11.

Example 2

The embodiment provides a circuit breaker as shown in fig. 1-6, including the energy storage closing structure in embodiment 1, the circuit breaker of this embodiment is through setting up as above energy storage closing structure, and it has all advantages because of setting up above-mentioned energy storage closing structure and bring naturally, and the relevant part of the energy storage closing structure in the circuit breaker is through the axle, parts such as cylinder articulate together, forms a part and assembles again, and degree of automation is higher, is favorable to the mass production manufacturing of product.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.