阅读说明：本技术 一种负荷开关的弹簧操作机构 (Spring operating mechanism of load switch ) 是由 彭康寿 陈美兰 陈伟 伍梓良 于 2020-11-19 设计创作，主要内容包括：本发明公开了一种负荷开关的弹簧操作机构,包括：基座；主动单元,包括转动设置在基座上的主动轴,主动轴上设有主动齿轮；离合单元,包括转动设置在基座上的从动轴,从动轴上设有从动齿轮、离合盘,离合盘的外边缘处设有离合卡口,离合掣子靠近离合盘的外边缘并扣合在离合卡口上；拐臂,转动设置在基座上；蓄能单元,与基座和主动轴连接；输出单元；合闸脱扣单元；分闸脱扣单元；主动轴转动令蓄能单元蓄能后,拐臂压紧离合掣子并使离合掣子脱离离合卡口。本发明利用离合结构,在蓄能单元储能完成后,输入扭矩无法再传递至从动轴中,从动轴空转,提高容错率,避免电机或人力在主动单元上影响合闸过程。(The invention discloses a spring operating mechanism of a load switch, which comprises: a base; the driving unit comprises a driving shaft which is rotatably arranged on the base, and a driving gear is arranged on the driving shaft; the clutch unit comprises a driven shaft which is rotatably arranged on the base, a driven gear and a clutch disc are arranged on the driven shaft, a clutch bayonet is arranged at the outer edge of the clutch disc, and a clutch pawl is close to the outer edge of the clutch disc and is buckled on the clutch bayonet; the crank arm is rotatably arranged on the base; the energy storage unit is connected with the base and the driving shaft; an output unit; a closing trip unit; a brake separating and tripping unit; after the driving shaft rotates to enable the energy storage unit to store energy, the crank arm presses the clutch pawl and enables the clutch pawl to be separated from the clutch bayonet. According to the invention, by utilizing the clutch structure, after the energy storage of the energy storage unit is completed, the input torque can not be transmitted to the driven shaft, the driven shaft idles, the fault-tolerant rate is improved, and the influence of a motor or manpower on the switching-on process on the driving unit is avoided.)

1. A spring operated mechanism of a load switch, comprising:

a base (100);

the driving unit (200) comprises a driving shaft (210) rotatably arranged on the base (100), and a driving gear (220) is arranged on the driving shaft (210);

the clutch unit (300) comprises a driven shaft (310) rotatably arranged on the base (100), a driven gear (320) and a clutch disc (330) are arranged on the driven shaft (310), the driven gear (320) is rotatably connected to the driven shaft (310) and is meshed with the driving gear (220), the clutch disc (330) is synchronously arranged on the driven shaft (310), a clutch pawl (321) is rotatably arranged on the driven gear (320), a clutch bayonet (331) is arranged at the outer edge of the clutch disc (330), and the clutch pawl (321) is close to the outer edge of the clutch disc (330) and is buckled on the clutch bayonet (331);

a crank arm (400) rotatably disposed on the base (100) and located outside a travel path of the clutch pawl (321);

the energy storage unit (500) is connected with the base (100) and the driving shaft (210);

an output unit (800), wherein the output unit (800) is connected with the driven shaft (310), and the crank arm (400) is connected with the output unit (800) and can swing back and forth along with the state of the output unit (800);

the closing tripping unit (600), the closing tripping unit (600) is connected with the clutch unit (300);

the opening tripping unit (700), the opening tripping unit (700) is connected with the output unit (800);

after the driving shaft (210) rotates to charge the energy storage unit (500), the crank arm (400) presses the clutch pawl (321) and enables the clutch pawl (321) to be separated from the clutch bayonet (331).

2. The spring operating mechanism of a load switch according to claim 1, wherein the energy accumulating unit (500) comprises an energy accumulating spring (510) and an energy accumulating cam (520), the energy accumulating cam (520) is synchronously connected to the driven shaft (310), a spring connecting member (530) is eccentrically and rotatably connected to the bottom of the energy accumulating cam (520), the energy accumulating spring (510) is connected between the base (100) and the spring connecting member (530), and when the driven shaft (310) rotates to stretch the energy accumulating spring (510) to the longest position, the crank arm (400) presses the clutch pawl (321) and disengages the clutch pawl (321) from the clutch disc (330).

3. The spring operation mechanism of the load switch according to claim 1, wherein the output unit (800) comprises an output shaft (810) and an output swing arm (820) arranged on the output shaft (810), the driven shaft (310) is further synchronously provided with a cam plate (340), a first end of the output swing arm (820) abuts against the cam plate (340), and a second end is connected with the opening tripping unit (700).

4. A spring operating mechanism of a load switch according to claim 3, wherein a linkage assembly (900) is provided between the output shaft (810) and the crank arm (400), the linkage assembly (900) comprises a connecting rod (910), a first connecting piece (920) provided on the crank arm (400) and a second connecting piece (930) provided on the crank arm (400), and both ends of the connecting rod (910) are respectively hinged on the first connecting piece (920) and the second connecting piece (930).

5. The spring-operated mechanism of load switch according to claim 3, wherein said opening tripping unit (700) comprises an opening tripping shaft (710), an opening swing part (740), an opening spring and an opening button (730), said opening swing part (740) and said opening tripping shaft (710) are rotatably connected to said base (100), said opening button (730) abuts against said opening tripping shaft (710), said opening tripping shaft (710) is provided with an opening tripping slot (711), a first end of said opening swing part (740) is buckled on said opening tripping slot (711), a second end of said opening tripping button abuts against said output swing arm (820), said opening spring is connected between said output swing arm (820) and said base (100) and can pull said output swing arm (820) to swing towards the driven shaft (310).

6. A spring-operated mechanism of a load switch according to claim 5, characterized in that the first end of the output swing arm (820) is provided with an abutment roller (821), the cam plate (340) is provided with a first arc-shaped surface abutting against the abutment roller (821), and the second end of the opening swing part (740) is provided with a second arc-shaped surface abutting against the second end of the output swing arm (820).

7. The spring-operated mechanism of load switch according to claim 1, wherein the closing trip unit (600) comprises a closing trip shaft (610), a closing button (620) and a closing pendulum (630), the closing trip shaft (610) and the closing pendulum (630) are rotatably connected to the base (100), a closing slot (611) is formed on the closing trip shaft (610), an eccentric fastening member (332) is formed on the clutch plate (330), when the energy storage unit (500) stores energy, a first end of the closing pendulum (630) abuts against/is close to the outside of the closing slot (611), and the eccentric fastening member (332) abuts against a second end of the closing pendulum (630) under the action of the energy storage unit (500).

8. The spring-operated mechanism of a load switch according to claim 7, characterized in that the clutch pawl (321) is rotationally connected to the driven gear (320), a return spring is provided at the rotational connection of the driven gear (320) and the clutch pawl (321), and the clutch bayonet (331) is composed of a cross section facing away from the rotational direction of the driven gear (320) and an arc-shaped transition surface.

9. A spring operating mechanism of a load switch according to claim 7, characterized in that said eccentric retainer (332) is an eccentric roller rotatably provided on an upper end face of said clutch plate (330).

10. The spring-operated mechanism of a load switch according to any one of claims 1 to 9, wherein the driving unit (200) further comprises a driving assembly (230), the driving assembly (230) comprises a driving member, a driving worm wheel (232) and a driving worm (231), the driving member is meshed with the driving worm (231), and the driving worm wheel (232) is synchronously connected to the driving shaft (210).

Technical Field

The invention relates to the technical field of electrical equipment, in particular to a spring operating mechanism of a load switch.

Background

The load switch is a switching device between a circuit breaker and a disconnecting switch, and has a simple arc-extinguishing device, and can cut off rated load current and a certain overload current, but can not cut off short-circuit current.

At present, a load switch operating mechanism applied to a switch cabinet generally adopts an operating mechanism similar to an isolating switch, for example, most manufacturers adopt a disc spring structure, the structure is only suitable for switching on and off a load switch with small current and cannot be suitable for high-voltage current, the number of parts is large, the structure is complex, the mechanical life of the mechanism is generally short, the number of usable times is 3000 plus 5000 times, and the use requirements of users with high requirements cannot be met.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a spring operating mechanism of a load switch, which can meet the requirements of high current, long service life and simple structure.

A spring operation mechanism of a load switch according to an embodiment of a first aspect of the present invention includes: a base; the driving unit comprises a driving shaft which is rotatably arranged on the base, and a driving gear is arranged on the driving shaft; the clutch unit comprises a driven shaft which is rotatably arranged on the base, a driven gear and a clutch disc are arranged on the driven shaft, the driven gear is rotatably connected to the driven shaft and is meshed with the driving gear, the clutch disc is synchronously arranged on the driven shaft, a clutch pawl is rotatably arranged on the driven gear, a clutch bayonet is arranged at the outer edge of the clutch disc, and the clutch pawl is close to the outer edge of the clutch disc and is buckled on the clutch bayonet; the crank arm is rotatably arranged on the base and is positioned outside the travel path of the clutch pawl; the energy storage unit is connected with the base and the driving shaft; the output unit is connected with the driven shaft, and the crank arm is connected with the output unit and can swing back and forth along with the state of the output unit; the closing tripping unit is connected with the clutch unit; the brake separating tripping unit is connected with the output unit; after the driving shaft rotates to enable the energy storage unit to store energy, the crank arm presses the clutch pawl and enables the clutch pawl to be separated from the clutch bayonet.

The spring operating mechanism of the load switch has at least the following beneficial effects: the mechanism cancels the energy storage keeping function on the design principle of the prior common circuit breaker operating mechanism, so that the mechanism can immediately perform closing action after finishing the energy storage operation; in addition, the function that energy cannot be stored again after energy storage switching-on, namely the pre-energy storage function, is added, and when switching-on is carried out, the energy stored by the energy storage unit is rapidly released, so that rapid switching-on is realized, and the switching-on efficiency can be obviously improved; by utilizing the clutch structure, after the energy storage of the energy storage unit is finished, the input torque can not be transmitted to the driven shaft, the driven shaft idles, the fault-tolerant rate is improved, and the phenomenon that a switching-on process is influenced by a motor or manpower on the driving unit is avoided; the improved whole mechanism can meet the requirement of heavy-current opening of the load switch, and has small size and long service life.

According to some embodiments of the invention, the energy storage unit comprises an energy storage spring and an energy storage cam, the energy storage cam is synchronously connected to the driven shaft, a spring connecting piece is eccentrically and rotatably connected to the bottom of the energy storage cam, the energy storage spring is connected between the base and the spring connecting piece, and when the driven shaft rotates to enable the energy storage spring to be stretched to the longest position, the crank arm presses the clutch pawl and enables the clutch pawl to be separated from the clutch disc.

According to some embodiments of the invention, the output unit comprises an output shaft and an output swing arm arranged on the output shaft, the driven shaft is also synchronously provided with a cam plate, a first end of the output swing arm abuts against the cam plate, and a second end of the output swing arm is connected with the brake-separating tripping unit.

According to some embodiments of the invention, a linkage assembly is arranged between the output shaft and the crank arm, the linkage assembly comprises a connecting rod, a first connecting piece arranged on the crank arm and a second connecting piece arranged on the crank arm, and two ends of the connecting rod are respectively hinged to the first connecting piece and the second connecting piece.

According to some embodiments of the present invention, the switching-off tripping unit includes a switching-off tripping shaft, a switching-off swing part, a switching-off spring and a switching-off button, the switching-off swing part and the switching-off tripping shaft are rotatably connected to the base, the switching-off button abuts against the switching-off tripping shaft, a switching-off tripping groove is formed on the switching-off tripping shaft, a first end of the switching-off swing part is fastened to the switching-off tripping groove, a second end of the switching-off swing part abuts against the output swing arm, and the switching-off spring is connected between the output unit and the base.

According to some embodiments of the present invention, the first end of the output swing arm is provided with an abutting roller, the cam plate is provided with a first arc-shaped surface abutting against the abutting roller, and the second end of the opening swing part is provided with a second arc-shaped surface abutting against the second end of the output swing arm.

According to some embodiments of the invention, the closing tripping unit includes a closing tripping shaft, a closing button and a closing swing part, the closing tripping shaft and the closing swing part are rotatably connected to the base, the closing tripping shaft is provided with a closing catching groove capable of being buckled with the closing swing part, the clutch disc is provided with an eccentric clamping member, when the energy storage unit stores energy, a first end of the closing swing part abuts against the outside of the closing catching groove, and the eccentric clamping member abuts against a second end of the closing swing part under the action of the energy storage unit.

According to some embodiments of the invention, the clutch pawl is rotatably connected to the driven gear, a return spring is provided at the rotary connection position of the driven gear and the clutch pawl, and the clutch bayonet is composed of a cross section and an arc transition surface, wherein the cross section faces away from the rotation direction of the driven gear.

According to some embodiments of the invention, the eccentric clamping member is an eccentric roller rotatably disposed on an upper end surface of the clutch disc.

According to some embodiments of the present invention, the driving unit further comprises a driving assembly, the driving assembly comprises a driving piece, a driving worm wheel and a driving worm, the driving piece is meshed with the driving worm, and the driving worm wheel is synchronously connected to the driving shaft.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of the overall structure of a spring operation mechanism of a load switch according to an embodiment of the present invention;

FIG. 2 is a top plan view of the spring operated mechanism shown in FIG. 1;

FIG. 3 is a schematic bottom view of the spring operated mechanism shown in FIG. 1;

FIG. 4 is a top view of the internal structure of the spring operated mechanism shown in FIG. 1;

FIG. 5 is an isometric view of the internal structure of the spring operated mechanism shown in FIG. 1;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

fig. 7 is a schematic structural view of the opening linkage portion of the spring operating mechanism shown in fig. 4.

The attached drawings are marked as follows:

a base 100;

a driving unit 200, a driving shaft 210, a driving gear 220, a driving assembly 230, a driving worm 231, and a driving worm wheel 232;

the clutch unit 300, the driven shaft 310, the driven gear 320, the clutch pawl 321, the clutch disc 330, the clutch bayonet 331, the eccentric clamping piece 332 and the cam disc 340;

a crank arm 400;

the energy storage unit 500, the energy storage spring 510, the energy storage cam 520, the spring connecting piece 530 and the connecting rod 540;

the device comprises a closing tripping unit 600, a closing tripping shaft 610, a closing catching groove 611, a closing button 620, a closing ornament 630, a first fastener shaft 640, a closing limiting shaft 650, a closing tripping plate 660 and a closing rod 670;

the brake separating and tripping device comprises a brake separating and tripping unit 700, a brake separating and tripping shaft 710, a brake separating and tripping groove 711, a brake separating button 730, a brake separating swing 740, a second fastener shaft 750, a brake separating and tripping plate 760 and a brake separating rod 770;

an output unit 800, an output shaft 810, an output swing arm 820, and an abutting roller 821;

linkage assembly 900, link 910, first link 920, second link 930.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, smaller, inner, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 7 together, a spring operation mechanism of a load switch according to an embodiment of the present invention will be described below.

Referring to fig. 1 to 3, a spring operating mechanism of a load switch includes a base 100, a driving unit 200, a clutch unit 300, a crank arm 400, an energy storage unit 500, an output unit 800, a closing trip unit 600, and an opening trip unit 700.

The driving unit 200 includes a driving shaft 210 rotatably disposed on the base 100, a driving gear 220 is disposed on the driving shaft 210, the driving gear 220 is synchronously connected to the driving shaft 210, the clutch unit 300 includes a driven shaft 310 rotatably connected to the base 100, a driven gear 320 and a clutch disc 330 are disposed on the driven shaft 310, the clutch disc 330 is synchronously connected to the driven shaft 310, the driven gear 320 is rotatably connected to the driven shaft 310, that is, the driven gear 320 can rotate relatively in a driven manner, the rotation axes of the driven gear 320 and the driven gear are the same but do not interfere with each other, and the driving gear 220 is engaged with the driven gear 320. The driven gear 320 is rotatably provided with a clutch latch 321, an outer edge of the clutch disc 330 is provided with a clutch bayonet 331, and the clutch latch 321 is arranged near the outer edge of the clutch disc 330 and is buckled on the clutch bayonet 331. Referring to fig. 1, the driven gear 320 rotates in the U direction by the driving gear 220, and simultaneously the clutch disc 330 is rotated by the clutch pawl 321, the clutch disc 330 rotates the driven shaft 310, and the energy storage unit 500 stores energy through the driven shaft 310.

The crank arm 400 is rotatably disposed on the base 100 and located outside a traveling path of the clutch pawl 321, the energy accumulating unit 500 is connected to the base 100 and the driving shaft 210, and the output unit 800 is connected to the driven shaft 310. The crank arm 400 is connected with the output unit 800 and can swing back and forth along with the state of the output unit 800, the state of the output unit 800 is an open state or an open state according to the opening and closing operations of the load switch, when the output unit 800 is closed, the crank arm 400 is pulled to move towards the driven shaft 310, namely the direction close to the traveling path of the clutch pawl 321, the crank arm rotates inwards, the crank arm can be pressed on the clutch pawl 321, and the clutch pawl 321 is separated from the clutch disc 330; when the output unit 800 is opened, the crank arm 400 is pulled to move away from the traveling path of the clutch pawl 321, and rotates outward, so that the clutch pawl 321 is separated from the traveling path of the clutch pawl 321, and the clutch pawl 321 is engaged with the clutch plate 330 again. The clutch pawl 321 moves circularly around the driven shaft 310 along the line of the driven gear 320 and is engaged with the clutch notch 331 of the clutch disk 330, and the clutch pawl 321 has an abutting portion. When the crank arm 400 is in the inward state and the clutch pawl 321 moves past the crank arm 400, the crank arm 400 presses the abutting portion, so that the engaging portion where the clutch pawl 321 engages with the clutch bayonet 331 is disengaged from the clutch bayonet 331, the clutch disc 330 does not rotate along with the driven gear 320 any more, the energy storage of the energy storage unit 500 is completed, and the driven shaft 310 stops rotating. The closing trip unit 600 is connected to the clutch unit 300 for starting closing motion, and the opening trip unit 700 is connected to the output unit 800 for re-opening start after closing.

In specific implementation, referring to fig. 4, in a preparation stage of closing energy storage, the output unit 800 is in a switching-off state, the driving unit 200 drives the driven gear 320 to move, the driven shaft 310 is driven to rotate under the buckling of the clutch catch 321, the driven shaft 310 drives the energy storage unit 500 to store energy, after the energy storage of the energy storage unit 500 is completed, the clutch catch 321 just passes through the position of the crank arm 400, the crank arm 400 presses the clutch catch 321 to separate the clutch catch 321 from the clutch disc 330, the driven gear 320 continues to rotate, the clutch disc 330 and the driven shaft 310 are not moved, when the clutch catch 321 on the driven gear 320 passes through the crank arm 400 again, the crank arm 400 still presses the clutch catch 321 to separate the clutch disc 330, at this time, the driven gear 320 idles, the energy storage unit 500 is in a preparation stage of energy storage, and the switching; when the switch is switched on, the switch-on tripping unit 600 releases the driven shaft 310, the driven shaft 310 rotates under the energy releasing action of the energy storage unit 500, the output unit 800 is pushed to be switched on, the switch-on process is completed, the crank arm 400 is in an open state at the moment, and the clutch pawl 321 is buckled with the opening of the clutch disc 330 again; during opening, the opening tripping unit 700 drives the output unit 800 to perform opening movement, and after the output unit 800 opens, the connecting lever 400 is driven to rotate, and at the moment, the closing energy storage preparation process is performed again.

In some embodiments of the present invention, the energy storage unit 500 includes an energy storage spring 510 and an energy storage cam 520, the energy storage cam 520 is synchronously connected to the bottom of the driven shaft 310, the bottom of the energy storage cam 520 is eccentrically and rotatably connected with a spring connector 530, a connecting rod 540 is fixedly arranged at the bottom of the base 100, a first end of the energy storage spring 510 is connected to the connecting rod 540 in a hanging manner, a second end of the energy storage spring 510 is connected to the spring connector 530 in a hanging manner, the driven shaft 310 reciprocally stretches the energy storage spring 510 during rotation, when the energy storage spring 510 stretches to the longest position, the energy storage cam 520 just passes through the dead point position, at this time, the clutch pawl 321 passes through the position of the crank arm 400, the crank arm 400 presses the main clutch pawl 321 and disengages the clutch disc 330, and the closing trip unit 600 abuts against the clutch disc 330.

Specifically, referring to fig. 5 and 6, the closing tripping unit 600 includes a closing tripping shaft 610, a closing button 620 and a closing ornament 630, the closing tripping shaft 610 and the closing ornament 630 are rotatably connected to the base 100, a first fastener shaft 640 is disposed on the base 100, the closing ornament 630 is rotatably disposed on the first fastener shaft 640, a first end of the closing ornament 630 is provided with a closing arc buckle, a closing catching groove 611 is disposed on the closing tripping shaft 610, an outer side surface of the closing arc buckle is an arc surface, the closing arc buckle can be buckled on the closing catching groove 611, an eccentric clamping member 332 is disposed on the clutch disc 330, and the eccentric clamping member 332 rotates around the driven shaft 310. A first reset member is provided at a rotational connection portion between the switching-on swing member 630 and the first fastener shaft 640, a second reset member is provided at a rotational connection portion between the switching-on trip shaft 610 and the base 100, the first reset member enables the switching-on swing member 630 to rotate in the M direction, the base 100 is provided with a switching-on limiting shaft 650, a limiting surface abutting against the switching-on limiting shaft 650 is provided at an end portion of the switching-on swing member 630, and in an initial state, the first returning member makes the closing pendulum 630 abut against the closing limit shaft 650, and at this time, the first end of the closing pendulum 630 is located above the clutch plate 330 and near the driven shaft 310, and is located on the moving path of the eccentric clamping member 332, when the clutch plate 330 is rotated by the driven gear 320, the clutch pawl 321 is disengaged from the clutch plate 330, the eccentric clamping member 332 is pressed against a first end of the closing swing member 630 by the energy storage spring 510, and a second end of the closing swing member 630 abuts against the closing trip shaft 610 and is located outside the closing trip groove 611. The closing tripping shaft 610 is provided with a closing tripping plate 760, the closing button 620 is connected with a closing rod 670, the closing rod 670 is limited on the base 100 and moves linearly along the base 100, the end of the closing rod 670 abuts against the closing tripping plate 760, the closing rod 670 pushes the closing abutting plate to rotate along the N direction when the closing button 620 is pressed down, and the second resetting piece drives the closing tripping shaft 610 to rotate along the reverse N direction, so that the closing tripping plate 760 always abuts against the end of the closing rod 670. During closing, a closing button 620 is pressed, a closing rod 670 pushes a closing trip shaft 610 to rotate at an angle along the N direction, an eccentric clamping member 332 pushes a closing swing member 630 to rotate towards the reverse M direction under the action of an energy storage spring 510, the second end of the closing swing member 630 is buckled into a closing buckling groove 611, the eccentric clamping member 332 leaves the closing swing member 630, and at the moment, the energy storage spring 510 can drive a driven shaft 310 to rotate along the a direction and drive an output unit 800 to close. When the eccentric clamping member 332 leaves the closing pendulum 630, the closing trip shaft 610 is reset along the reverse N direction under the action of the second reset member and pushes the closing button 620 to reset through the closing trip plate 760, the closing pendulum 630 rotates along the M direction under the action of the first reset member and is again abutted against the closing limit shaft 650, and the second end of the closing pendulum 630 leaves the closing trip slot 611.

Specifically, the eccentric clamping piece 332 is an eccentric roller rotatably arranged on the upper end face of the clutch disc 330, and the eccentric roller can reduce the frictional resistance and the jacking force for pushing away the switching-on swing part 630, so that the switching-on swing part 630 can be smoothly passed through, the switching-on loss is reduced, and the service life is prolonged.

It should be noted that the clutch pawl 321 is rotatably connected to the driven gear 320, a return spring is disposed at a rotational connection position between the driven gear 320 and the clutch pawl 321, the clutch bayonet 331 is composed of a cross section facing away from a rotational direction of the driven gear 320 and an arc-shaped transition surface, a first end of the clutch pawl 321 is an abutting portion, a second end is an engaging portion, and the return spring pushes the clutch pawl 321 to rotate along the direction B, so that the engaging portion presses against an outer edge of the clutch disc 330 toward the driven shaft 310, and is engaged with the clutch bayonet 331. At the stage of completion of charging, the clutch mount 331 stops at the crank arm 400, and when the clutch pawl 321 passes the clutch mount 331 again by the movement of the driven gear 320, the crank arm 400 presses the abutting portion of the clutch pawl 321 from below, so that the clutch pawl 321 cannot be engaged with the clutch mount 331, and the driven gear 320 is in an idling state.

In some embodiments of the present invention, the output unit 800 includes an output shaft 810 and an output swing arm 820 disposed on the output shaft 810, and the cam plate 340 is also disposed on the driven shaft 310 synchronously, in this embodiment, the cam plate 340, the energy storage cam 520, and the clutch wheel are all disposed on the driven shaft 310 synchronously through flat keys. The output unit 800 comprises an output shaft 810 and an output swing arm 820 arranged on the output shaft 810, the driven shaft 310 is further synchronously provided with a cam plate 340, a first end of the output swing arm 820 abuts against the cam plate 340, a second end of the output swing arm 820 is connected with the opening tripping unit 700, the output shaft 810 is rotatably connected to the base 100, a limit plane is arranged on the side surface of the output shaft 810, the output swing arm 820 is synchronously connected with the output swing arm 820 through the limit plane, an abutting roller 821 is arranged at the first end of the output swing arm 820, the output swing arm 820 is used for being connected with a closing mechanism on a switch cabinet, a first arc-shaped surface capable of abutting against the abutting roller 821 is arranged on the cam plate 340, and a second arc-shaped surface abutting against the second end of the output swing arm 820 is. When the output swing arm 820 rotates around the direction C, the closing mechanism is pushed to be closed, and when the output swing arm 820 rotates around the direction opposite to the direction C, the closing mechanism is pulled to be opened. When the output unit 800 is pushed by the cam disc 340 to be switched on, the cam disc 340 does not work on the output unit 800 at the moment, and the cam disc 340, the driven shaft 310, the clutch disc 330 and the driven gear 320 idle together.

Referring to fig. 5 to 7, the switching-off tripping unit 700 includes a switching-off tripping shaft 710, a switching-off swing piece 740, a switching-off spring and a switching-off button 730, the switching-off swing piece 740 and the switching-off tripping shaft 710 are rotatably connected to the base 100, a second fastener shaft 750 is disposed on the base 100, the switching-off swing piece 740 is rotatably connected to the second fastener shaft 750, a third reset piece is disposed at a connection position of the switching-off swing piece 740 and the second fastener shaft 750, the third reset piece can drive the switching-off swing piece 740 to rotate along the direction D, a switching-off limit shaft is disposed on the base 100, and the switching-off limit shaft is used for limiting a swinging position of the switching-off swing piece 740 along the direction D. The opening tripping shaft 710 is provided with an opening tripping plate 760, an opening rod 770 is connected to an opening button, the opening rod 770 is arranged on the base 100 in a limiting mode and moves linearly along the base 100, the end of the opening rod 770 abuts against the opening tripping plate 760, an opening tripping groove 711 is formed in the opening tripping shaft 710, a fourth resetting piece is further arranged on the opening tripping shaft 710, and the opening tripping shaft 710 rotates along the direction E through the fourth resetting piece. The opening spring is connected between the output swing arm 820 and the base 100, one end of the opening spring is connected to a first end of the output swing arm 820, and the other end of the opening spring is connected to the base 100, and the opening spring can be pulled to rotate towards the driven shaft 310, namely, rotate along the direction opposite to C. When the switch is switched on, the cam disc 340 pushes the output swing arm 820 to overcome the switching-off spring to move along the direction C, the switching-off swing part 740 originally buckled on the switching-off tripping shaft 710 pushes the switching-off tripping shaft 710 to be separated through the output swing arm 820, the switching-off tripping shaft 710 rotates at a small angle along the E direction on the action line of the fourth resetting part, at the moment, the switching-off swing part 740 cannot be buckled on the switching-off tripping shaft 710, when the cam disc 340 is driven by the driven shaft 310 to be separated from the output swing part, the switching-off swing part 740 is clamped outside the switching-off buckling groove 711 under the action of the third resetting part, and the switching-on state of the output swing arm 820 is; during opening, the opening button 730 is pressed, the opening tripping shaft 710 is pushed by the opening rod 770 to move along the reverse direction of E, the opening swing part 740 is buckled on the opening tripping groove 711 again, the opening spring pulls the output swing arm 820 to move along the reverse direction of C, the output swing part pulls the closing mechanism to open, and the opening process is completed.

It should be noted that the first and third reset members are torsion springs provided on the shaft for resetting, the second and fourth reset members are reset springs, one end of the second reset member is connected to the base 100, the other end of the second reset member is connected to the closing trip shaft 610, one end of the fourth reset member is also connected to the base 100, and the other end of the fourth reset member is connected to the opening trip shaft 710.

Further, a linkage assembly 900 is arranged between the output shaft 810 and the crank arm 400, the linkage assembly 900 comprises a connecting rod 910, a first connecting piece 920 arranged on the output and a second connecting piece 930 arranged on the crank arm 400, two ends of the connecting rod 910 are respectively hinged to the first connecting piece 920 and the second connecting piece 930, the first connecting piece 920 and the second connecting piece 930 can be respectively connected to the output shaft 810 and the crank arm 400 through screws, and a three-connecting-rod 910 linkage mechanism is formed among the connecting rod 910, the first connecting piece 920 and the third connecting piece. When the output shaft 810 rotates in the direction C, which is a closing process, the linkage assembly 900 pulls the crank arm 400 to rotate in the direction F, and opens away from the driven shaft 310, the crank arm 400 disengages from the travel path of the clutch catch 321, the clutch catch 321 cannot be pressed, and the clutch catch 321 is buckled with the clutch disc 330 again; when the output shaft 810 rotates in the reverse direction of C, which is an opening process, the linkage assembly 900 pulls the crank arm 400 to rotate in the reverse direction of F, approaching the driven shaft 310, and presses the clutch stopper 321 to separate the clutch stopper 321 from the clutch plate 330.

In some embodiments of the present invention, the driving unit 200 further includes a driving assembly 230, the driving assembly 230 includes a driving member, a driving worm wheel 232 and a driving worm 231, the driving worm wheel 232 is connected to the driving shaft 210 through a key, the driving worm 231 is meshed with the driving worm wheel 232, and the driving member is connected to the driving worm 231 for driving the driving worm 231 to rotate. In this embodiment, the driving member is a driving motor, and besides the driving member is used for driving rotation, the driving worm 231 can also be driven to rotate in a manual rotation manner, and the handle is used for rotating, so that the driven shaft 310 rotates, and the driving shaft 210 drives the driven gear 320 to rotate by using the driving gear 220. By adopting the worm and gear structure, the transmission noise can be reduced, the setting direction of the driving piece can be changed, and the compactness of the structure is improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.