CN212570895U

CN212570895U - Switch electric appliance and combined folding rotary handle thereof

Info

Publication number: CN212570895U
Application number: CN202020923533.8U
Authority: CN
Inventors: 徐永富; 唐丰田; 李儒光
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-02-19
Anticipated expiration: 2030-05-27

Abstract

A combined folding rotary handle of a switch electric appliance comprises a cover cap, a connecting rod and a handle sleeve, wherein the cover cap is fixedly installed on an operating mechanism, an open slot used for containing the cover cap is formed in one end of the connecting rod, two side walls of the open slot are clamped on the outer wall of the cover cap, a first limiting structure and a second limiting structure are arranged between the side wall of the connecting rod and the outer wall of the cover cap, the first limiting structure is used for enabling the connecting rod and the cover cap to form rotating connection, the connecting rod can rotate around the first limiting structure relative to the cover cap to enable the connecting rod to be folded on one side of the cover cap, the second limiting structure is located around the first limiting structure, when the connecting rod rotates on the cover cap to a certain angle, the second limiting structure is used for limiting the rotation of the connecting rod to operate the operating mechanism of the switch electric appliance, the handle sleeve is connected to the other end of the connecting rod, the connecting, the occupied space of the handle is reduced.

Description

Switch electric appliance and combined folding rotary handle thereof

Technical Field

The utility model relates to a low-voltage circuit breaker device, concretely relates to switching apparatus and folding twist grip of combination thereof.

Background

The low-voltage circuit breaker has a certain protection function in addition to a control function in a circuit, and is widely applied to various levels of feed-out wires of a low-voltage distribution system, power control of various mechanical equipment and control and protection of electric terminals. With the increasing requirements of economic and technical indexes, the overall miniaturization of the circuit breaker becomes a trend and reality for matching with the complete set of cabinets and distribution boxes with increasingly reduced volumes. However, under the condition of the prior art, the size reduction design of the circuit breaker product is contradictory to the design of a large enough arc extinguish chamber structure required by a direct current and high breaking double-breakpoint circuit breaker product, so that the miniaturization of the design of the internal structure alone has certain limitation. Meanwhile, in order to save labor during operation, the handle sleeve is generally lengthened or the integrated handle is manufactured, but the design can lead the handle to still occupy a certain space when the handle is not operated for use, particularly, the handle of the low-voltage circuit breaker is generally a structural member, the installation and use space of a product cannot be reduced in a rotating or folding mode, the cost is increased, and the small-size complete cabinet and distribution box cannot be effectively matched.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, can fold and the little switching device's of occupation space combination folding twist grip and be equipped with the switching device of this handle.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a folding twist grip of switch electric appliance's combination, includes shroud, connecting rod and handle cover, shroud fixed mounting is on switch electric appliance's operating device, the one end of connecting rod is equipped with the open slot that is used for holding the shroud, and the both sides wall centre gripping of open slot is equipped with first limit structure and second limit structure between connecting rod lateral wall and shroud outer wall, first limit structure is used for making connecting rod and shroud form to rotate and is connected, and the connecting rod can make for the rotation of shroud around first limit structure and fold one side at the shroud, and second limit structure is located around first limit structure, rotates to certain angle back on the shroud as the connecting rod, and second limit structure is used for restricting the rotation of connecting rod with operating device's operating device (5), handle cover connects the other end at the connecting rod.

Furthermore, the direction of the rotation and folding of the connecting rod is vertical to the direction of the operation mechanism driven by the swinging of the handle.

Further, the first limit structure is located on the central axis of the outer wall of the cover cap, the second limit structure is located on one side of the central axis of the outer wall of the cover cap, the connecting rods can respectively rotate and fold towards two sides of the central axis of the outer wall of the cover cap, and the sum of the rotating angles of the connecting rods respectively rotating towards the two sides is 150-250 degrees.

Further, the connecting rod only can rotate to one side of the central axis of shroud outer wall and fold, second limit structure is including setting up the second cooperation portion at the shroud outer wall and setting up the spacing portion of second at the open slot inside wall, second cooperation portion is groove structure, and second limit structure is protruding structure be equipped with the arc wall around first limit structure on the shroud outer wall, the central angle of arc wall is 100, the one end of arc wall is equipped with second cooperation portion to the one end that is equipped with second cooperation portion forms the contained angle with the central axis of shroud outer wall, the central axis of the other end perpendicular to shroud outer wall of arc wall, the spacing portion of second can slide in the arc wall, and the connecting rod only can rotate to one side of keeping away from second cooperation portion and fold.

Furthermore, the first limit structure comprises first matching parts arranged in the middle parts of the outer walls on the two sides of the cover cap, first limit parts are arranged on the two inner side walls of the open slot, and the connecting rod can rotate on the cover cap under the matching of the first limit parts and the first matching parts; the second limit structure comprises a second matching part arranged on the outer wall of the cover cap and a second limit part arranged on the inner side wall of the open slot, the second matching part is of a groove structure, the second limit part is of a protruding structure matched with the groove structure, when the connecting rod rotates relatively on the cover cap around the first limit structure, the second limit part slides along the outer wall of the cover cap, and the connecting rod is used for limiting the relative rotation of the connecting rod on the cover cap after the second limit part is matched and clamped into the second matching part.

Further, be equipped with the arc wall on the shroud outer wall, the arc wall sets up around first limit structure, and second cooperation portion sets up inside the arc wall, the tank bottom of second cooperation portion is less than the tank bottom of arc wall.

Further, the arc wall semicircular in shape encircles one side of keeping away from operating device at first limit structure, is equipped with second cooperation portion in the arc wall middle part, and the connecting rod can rotate to the both sides of the central axis of shroud outer wall and fold, and the connecting rod rotates on the shroud, and when the connecting rod coincided with the central axis of shroud outer wall mutually, second limit structure restricted the connecting rod and rotated.

Further, first limit structure is including setting up the pinhole on shroud and connecting rod and passing the round pin axle of pinhole, and under the cooperation of round pin axle and pinhole, the connecting rod can rotate folding on the shroud.

Further, the connecting rod is wholly Y-shaped, and the connecting rod includes two connecting arms, the one end of two connecting arms links together, and all is equipped with the other end that buckles and make two connecting arms and opens and form the open slot at the middle part of two connecting arms.

A switching apparatus comprises the combined folding rotary handle of the switching apparatus.

Preferably, switching apparatus is the circuit breaker, the circuit breaker includes operating device, operating device includes fan-shaped cover and contact support, fan-shaped cover is including the sector of orientation shroud and the arcwall face towards operating device the sector is equipped with the instruction portion that is used for instructing circuit breaker combined floodgate, separating brake to the middle part and the shroud fixed connection of sector the both sides of arcwall face are connected with the slice connecting rod, the slice connecting rod supports to rotate with operating device's contact and is connected.

The utility model discloses a folding twist grip of combination of switch electrical apparatus, one end of connecting rod presss from both sides tightly on the shroud, when need not operating the operating device of switch electrical apparatus, make the connecting rod rotate on the shroud through first limit structure and can fold the connecting rod in one side of shroud, reduced the occupation space of handle, when the operating device of switch electrical apparatus needs to be operated, when making the connecting rod rotate to certain angle and through second limit structure restriction connecting rod rotate on the shroud and be used for operating switch electrical apparatus; simultaneously, set up the handle cover at the other end of connecting rod, along with the connecting rod is folding in one side of shroud, the handle cover is also driven to one side of shroud, even so structure uses longer connecting rod and handle cover can not occupy too much space yet, does benefit to the laborsaving structural design of handle.

In addition, the rotating and folding direction of the connecting rod is perpendicular to the swinging direction of the handle, so that the labor-saving and lengthening design of the handle can be met, and the space occupied by the handle can be reduced. The first limiting structure comprises a first limiting part and a first matching part, the second limiting structure comprises a second limiting part and a second matching part, the first limiting part and the first matching part are in interference fit to enable the connecting rod to rotate on the cover cap, and the connecting rod is folded on one side of the cover cap when an operating mechanism of the switching electric appliance is not operated; set up the arc wall on the shroud outer wall and provide the slip track for the spacing portion of second to set up second cooperation portion in the arc wall and be used for with the spacing cooperation of the spacing portion of second, the arc wall can improve second limit structure's cooperation stability.

Drawings

Fig. 1 is a schematic structural view of a combined folding rotary handle of a switching device according to the present invention;

fig. 2 is a schematic structural view of a combined folding rotary handle of a switching device according to the present invention (a connecting rod is folded on one side of a cover cap in a rotating manner);

fig. 3 is a schematic structural view of a combined folding rotary handle of the switching device of the present invention;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a side view of FIG. 3;

fig. 6 is an exploded view of fig. 3.

Detailed Description

The following describes a specific embodiment of the combined foldable rotating handle of a switching device according to the present invention with reference to the embodiments shown in fig. 1 to 6. The utility model discloses a combined folding rotating handle of switching apparatus is not limited to the description of following embodiment.

A combined folding rotary handle of a switch electric appliance comprises a cover 1, a connecting rod 3 and a handle sleeve 4, the cover cap 1 is fixedly arranged on an operating mechanism 5 of the switch electric appliance, one end of the connecting rod 3 is provided with an open slot 2 used for accommodating the cover cap 1, two side walls of the open slot 2 are clamped on the outer wall of the cover cap 1, a first limit structure and a second limit structure are arranged between the side wall of the connecting rod 3 and the outer wall of the cover cap 1, the first limit structure is used for enabling the connecting rod 3 to be in rotating connection with the cover cap 1, the connecting rod 3 can rotate around the first limit structure relative to the cover cap 1 to enable the connecting rod 3 to be folded at one side of the cover cap 1, the second limit structure is positioned around the first limit structure, when the connecting rod 3 rotates to a certain angle on the cover 1, the second limit structure is used for limiting the rotation of the connecting rod 3 so as to operate an operating mechanism 5 of the switch electric appliance, and the handle sleeve 4 is connected to the other end of the connecting rod 3.

The utility model discloses a folding twist grip of combination of switching device, one end of connecting rod 3 presss from both sides tightly on shroud 1, when the operating device 5 of switching device need not operate, make connecting rod 3 rotate on shroud 1 through first limit structure can fold connecting rod 3 in one side of shroud 1, reduced the occupation space of handle, when needing to operate operating device 5, when making connecting rod 3 rotate to certain angle and restrict the rotation of connecting rod 3 on shroud 1 through second limit structure and be used for operating switching device; simultaneously, set up handle cover 4 at the other end of connecting rod 3, along with connecting rod 3 is folding in one side of shroud 1, handle cover 4 is also driven to one side of shroud 1, even so structure uses longer connecting rod 3 and handle cover 4 can not occupy too much space yet, does benefit to the laborsaving structural design of handle.

The folding twist grip of combination of this application can use in switching apparatus, and the switching apparatus of this application uses the circuit breaker as an example, also can be used for other switching apparatus certainly. A first embodiment is provided in conjunction with fig. 1-6, and a combined folding rotary handle of a circuit breaker includes a cover cap 1, a connecting rod 3 and a handle sleeve 4, the cover cap 1 is fixedly mounted on an operating mechanism 5, the operating mechanism 5 includes a fan-shaped cover and a contact support, the fan-shaped cover is used for shielding an operating hole for swinging the handle on a circuit breaker housing, and a contact mechanism is rotatably mounted on the contact support. The fan-shaped cover comprises a fan-shaped surface facing the cover cap 1 and an arc-shaped surface facing the operating mechanism 5, the fan-shaped surface is provided with an indicating part used for indicating switching-on and switching-off of the circuit breaker, the middle part of the fan-shaped surface is fixedly connected with the cover cap 1, two sides of the arc-shaped surface are connected with sheet-shaped connecting rods, the sheet-shaped connecting rods are rotatably connected with contact supports of the operating mechanism 5, and the fan-shaped cover drives the moving contacts to support in the shell to rotate under the swinging of the handle so as to operate a contact mechanism of the circuit breaker. Preferably, shroud 1 passes through screw fixed mounting on operating device 5, specifically fixes the sector middle part at fan-shaped cover, the one end of connecting rod 3 is equipped with the open slot 2 that is used for holding shroud 1, and the both sides wall centre gripping of open slot 2 is equipped with first limit structure and second limit structure between connecting rod 3 lateral wall and shroud 1 outer wall, first limit structure is used for making connecting rod 3 and shroud 1 form to rotate and is connected, and connecting rod 3 can make for one side at shroud 1 for the rotation of shroud 1 around first limit structure, and second limit structure is located around first limit structure, and after connecting rod 3 rotated to certain angle on shroud 1, second limit structure is used for restricting connecting rod 3's rotation with operating device 5 of operation circuit breaker, handle cover 4 passes through the other end of mounting screw at connecting rod 3.

The rotation folding direction of preferred connecting rod 3 is mutually perpendicular with the swing direction when handle operation circuit breaker, and structure like this can satisfy the laborsaving extension design of handle, can reduce the shared space of handle again. As shown in fig. 1, in this embodiment, it is preferable that the rotation folding direction of the link 3 is perpendicular to the swing direction of the handle, and in fig. 1, when the switch of the circuit breaker needs to be operated by using the handle, the link 3 is made to coincide with the central axis a of the cover cap 1 under the action of the second limiting structure (see fig. 4, the central axis a does not exist in the actual structure, but is a central line for conveniently describing the design), at this time, the length of the handle is the largest, the operation is the most labor-saving, the handle is made to swing in the left-right direction of the paper surface by operating the handle and drives the fan-shaped cover to swing left and right, and the sheet-shaped link of the fan-shaped cover drives the contact support; when the breaker is switched on and off without using a handle, the connecting rod 3 is rotated and folded along the direction vertical to the paper surface so as to reduce the space occupied by the handle.

Specifically, the first limiting structure is located on a central axis a of an outer wall of the cover cap 1, the second limiting structure is located on one side of the central axis a of the outer wall of the cover cap 1, the connecting rods 3 can respectively rotate and fold towards two sides of the central axis a of the outer wall of the cover cap 1, the sum of rotation angles of the connecting rods 3 respectively rotating towards the two sides is 150-250 degrees, the sum of the rotation angles is 200 degrees, the central axis a of the cover cap 1 is used as a boundary, and the maximum rotation angle of the connecting rods 3 rotating clockwise and anticlockwise is 100 degrees. In fig. 2, 3, 4 and 6, the second limit structure is located on the left side of the central axis a of the outer wall of the cover cap 1, and an included angle between a straight line where the first limit structure and the second limit structure are located and the central axis a of the outer wall of the cover cap 1 is smaller than 45 degrees, and at this time, the clockwise rotation angle of the connecting rod 3 is larger than the counterclockwise rotation angle of the connecting rod 3. Of course, the first limit structure and the second limit structure may be both located on the central axis a of the outer wall of the cover cap 1, the connecting rod 3 may be folded toward both sides of the central axis a of the outer wall of the cover cap 1, and at this time, the clockwise and counterclockwise rotation angles of the connecting rod 3 on the cover cap 1 may be the same, and the maximum rotation angle is 125 °.

Specifically, preferably, first limit structure adopts interference fit's concave-convex structure, first limit structure is equipped with first spacing portion 31 including setting up the first cooperation portion in 1 both sides outer wall middle part of shroud at two inside walls of open slot 2, and first cooperation portion is groove structure, and is corresponding, and first spacing portion 31 is lug boss structure, and of course, first cooperation portion also can be protruding structure, and first spacing portion 31 is groove structure, and in fig. 6, first spacing portion 31 and the spacing portion 32 of second are lug boss structure in the one side that is close to shroud 1, externally present groove structure. The link 3 can rotate on the cover 1 by the cooperation of the first position-limiting portion 31 and the first engaging portion. The second limit structure can set up in one side of shroud 1 and connecting rod 3, also can set up the both sides at shroud 1 and connecting rod 3 simultaneously, the second limit structure is including setting up the second cooperation portion at shroud 1 outer wall and setting up the spacing portion 32 of second at open slot 2 inside wall, and the preferred recess structure of a pair of mutually supporting of second cooperation portion and second spacing portion 32, and when connecting rod 3 made relative rotation around first limit structure on shroud 1, the spacing portion 32 of second slided along shroud 1 outer wall, and the spacing portion 32 of second cooperates with the second cooperation portion and is used for restricting the relative rotation of connecting rod 3 on shroud 1. It should be noted that, although the second engaging portion as the second limiting structure is located on the left side of the central axis a of the outer wall of the cover cap 1, the link 3 can rotate to the left and right sides of the central axis a of the outer wall of the cover cap 1, the maximum rotation angle is 100 °, and after rotating 100 °, the link 3 can be approximately parallel to the housing of the circuit breaker, and can occupy less space, and the direction of the rotational folding of the link 3 can be the same as the swing direction of the handle-operated circuit breaker, but the direction of the rotational folding is the same as the direction of the handle-swing-driven operating mechanism 5, and the limiting rotation force provided by the second limiting structure needs to be larger than the force of the handle-swing-driven operating mechanism 5, so the direction of the rotational folding of the link 3 is preferably perpendicular to or at a certain angle to.

Since the cover 1 provides only the pivot point and the positioning points for restricting the rotation, i.e., the first engagement portion and the second engagement portion, for the link 3, the cover 1 can be reduced in size as much as possible and mounted on the operating mechanism 5 by screws. The link 3 and the handle cover 4 rotated on the cover 1 can be folded at one side of the cover 1 when the circuit breaker is not operated, and thus the length of the link 3 and the handle cover 4 can be appropriately lengthened from the viewpoint of labor-saving operation.

Combine figure 6, provide a structure of connecting rod 3, connecting rod 3 wholly is the Y style of calligraphy, and connecting rod 3 includes two linking arms, the one end of two linking arms links together, and all is equipped with the other end that buckles and make two linking arms and opens and form open slot 2 at the middle part of two linking arms, and connecting rod 3 of this kind of Y font sets up open slot 2 and is used for the centre gripping to form first limit structure's interference fit on two outer walls of shroud 1.

Of course, when the first limiting structure is a pin connection (not shown), the connecting rod 3 is a rod body without the open slot 2, the cover 1 and the connecting rod 3 are provided with pin holes and the cover 1 and the connecting rod 3 are connected together by a pin, at this time, the connecting rod 3 is arranged on one side of the cover 1, and a second limiting structure is arranged on the side wall of the connecting rod 3 and the side wall of one side of the cover 1, the second limiting structure comprises a second limiting part 32 and a second matching part which are in limiting fit with each other, when the circuit breaker needs to be operated, the second limiting structure enables the cover 1 and the connecting rod 3 to be in limiting fit for operating the circuit breaker, at this time, the direction of the rotary folding of the connecting rod 3 is the same as that of the first embodiment, and preferably, the direction of the rotary folding of the connecting rod 3.

The structure is further optimized on the basis of the first embodiment, and a second embodiment (not shown) is provided, and an arc-shaped groove (not shown) is preferably arranged on the outer wall of the cover cap 1, the arc-shaped groove is preferably semicircular in shape, the arc-shaped groove is arranged around the first limit structure and surrounds one side of the first limit structure far away from the operating mechanism 5, preferably, the second limit part 32 on the connecting rod 3 is arranged to be a convex structure, the second matching part is arranged to be a groove structure, the second limiting part 32 can slide along the arc-shaped groove, is arranged in the middle of the arc-shaped groove as a second matching part for limiting the rotation of the connecting rod 3, the groove bottom as the second matching part is lower than the groove bottom of the arc-shaped groove, when connecting rod 3 rotates folding, spacing portion 32 of second and the tank bottom cooperation of arc wall, when needs operation circuit breaker, spacing portion 32 of second makes connecting rod 3 unable rotation in sliding to the second cooperation portion along the arc wall. The outer wall of the cover cap 1 is provided with an arc-shaped groove, so that the matching stability of the second limiting structure can be improved. Correspondingly, the arc-shaped groove and groove structures can also be arranged on the connecting rod 3, and the projection structures can also be arranged on the cover 1.

A third embodiment (not shown) is provided on the basis of the first embodiment, the connecting rod 3 can only be rotated and folded to one side of the central axis a of the outer wall of the cover cap 1, the second limiting structure comprises a second matching part arranged on the outer wall of the cover cap 1 and a second limiting part 32 arranged on the inner side wall of the open slot 2, preferably, the second limiting part 32 is a boss structure, the second matching part is a groove structure, an arc-shaped groove surrounding the first limiting structure is arranged on the outer wall of the cover cap 1, the central angle of the arc-shaped groove is preferably 100 °, two ends of the arc-shaped groove are respectively located on two sides of the central axis a of the outer wall of the cover cap 1, one end of the arc-shaped groove is provided with the second matching part, the included angle between one end provided with the central axis a of the outer wall of the cover, the second limiting part 32 can slide in the arc-shaped groove, the connecting rod 3 can only rotate and fold to one side far away from the second matching part, certainly, the central angle of the arc-shaped groove can also be 90 degrees or an obtuse angle, but one end of the arc-shaped groove is required to be perpendicular to the central axis a of the outer wall of the cover cap 1, and the second matching part is arranged at the other end of the arc-shaped groove. In this case, the rotation folding direction of the link 3 forms a certain angle with the swing direction of the handle-operated circuit breaker, and preferably, the rotation folding direction of the link 3 is perpendicular to the swing direction of the handle.

In a fourth embodiment (not shown) based on the first embodiment, the link 3 can be folded only at one side of the central axis a of the outer wall of the cover 1, and the direction of folding the link 3 is preferably perpendicular to the direction of swinging the handle as in the first embodiment. The second limit structure comprises a second matching part which is convexly arranged on the outer wall of the cover cap 1, the second matching part is positioned at one side edge of the outer wall of the cover cap 1, the second matching part is in limit matching with one side edge of the connecting rod 3, and the connecting rod 3 can be rotated and folded towards one side of the cover cap 1 without the second matching part. The second matching portion may be disposed at the edge of one side of the two outer walls of the cover 1, and the connecting rod 3 is preferably a Y-shaped connecting rod 3 having the opening slot 2, but the second matching portion may also be disposed at the edge of one side of one outer wall of the cover 1, and the connecting rod 3 may be a rod body without the opening slot 2 or a Y-shaped connecting rod 3 having the opening slot 2.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a folding twist grip of combination of switching apparatus which characterized in that: comprises a cover cap (1), a connecting rod (3) and a handle sleeve (4), wherein the cover cap (1) is fixedly arranged on an operating mechanism (5) of the switching device, one end of the connecting rod (3) is provided with an open slot (2) for accommodating the cover cap (1), two side walls of the open slot (2) are clamped on the outer wall of the cover cap (1), a first limit structure and a second limit structure are arranged between the side wall of the connecting rod (3) and the outer wall of the cover cap (1), the first limit structure is used for enabling the connecting rod (3) and the cover cap (1) to form rotary connection, the connecting rod (3) can rotate around the first limit structure relative to the cover cap (1) to enable the connecting rod (3) to be folded on one side of the cover cap (1), the second limit structure is positioned around the first limit structure, and after the connecting rod (3) rotates on the cover cap (1) to a certain angle, the second limit structure is used for limiting the rotation of the connecting rod (3) to operate, the handle sleeve (4) is connected to the other end of the connecting rod (3).

2. The combined folding rotary handle of switching electric appliance according to claim 1, characterized in that: the direction of the rotary folding of the connecting rod (3) is vertical to the direction of the operation mechanism (5) driven by the swinging of the handle.

3. The combined folding rotary handle of switching electric appliance according to claim 1, characterized in that: the first limiting structure is located on a central axis (a) of the outer wall of the cover cap (1), the second limiting structure is located on one side of the central axis (a) of the outer wall of the cover cap (1), the connecting rods (3) can respectively rotate and fold towards two sides of the central axis (a) of the outer wall of the cover cap (1), and the sum of rotating angles of the connecting rods (3) rotating towards the two sides is 150-250 degrees.

4. The combined folding rotary handle of switching electric appliance according to claim 3, characterized in that: the connecting rod (3) can only be folded towards one side of the central axis (a) of the outer wall of the cover (1), the second limit structure comprises a second matching part arranged on the outer wall of the cover cap (1) and a second limit part (32) arranged on the inner side wall of the open slot (2), the second matching part is of a groove structure, the second limit structure is of a convex structure, an arc-shaped groove surrounding the first limiting structure is arranged on the outer wall of the cover cap (1), the central angle of the arc-shaped groove is 100 degrees, a second matching part is arranged at one end of the arc-shaped groove, one end provided with the second matching part forms an included angle with the central axis (a) of the outer wall of the cover cap (1), the other end of the arc-shaped groove is vertical to the central axis (a) of the outer wall of the cover cap (1), the second limiting part (32) can slide in the arc-shaped groove, and the connecting rod (3) can only be rotated and folded towards one side far away from the second matching part.

5. The combined folding rotary handle of switching electric appliance according to any of claims 1 to 4, characterized in that: the first limiting structure comprises first matching parts arranged in the middle parts of the outer walls of the two sides of the cover cap (1), first limiting parts (31) are arranged on the two inner side walls of the open slot (2), and the connecting rod (3) can rotate on the cover cap (1) under the matching of the first limiting parts (31) and the first matching parts; the second limit structure is including setting up second cooperation portion and the second spacing portion (32) of setting at open slot (2) inside wall at shroud (1) outer wall, second cooperation portion is groove structure, and spacing portion (32) of second are the protruding structure with groove structure matched with, and when connecting rod (3) were made relative rotation on shroud (1) around first limit structure, the spacing portion (32) of second slided along shroud (1) outer wall, was used for restricting the relative rotation of connecting rod (3) on shroud (1) after second cooperation portion (32) cooperation card was gone into in the second cooperation portion.

6. The combined folding rotary handle of switching electric appliance according to claim 5, characterized in that: the outer wall of the cover cap (1) is provided with an arc-shaped groove, the arc-shaped groove is arranged around the first limiting structure, the second matching portion is arranged inside the arc-shaped groove, and the groove bottom of the second matching portion is lower than that of the arc-shaped groove.

7. The combined folding rotary handle of switching electric appliance according to claim 6, characterized in that: the arc-shaped groove is semicircular and surrounds one side, far away from the operating mechanism (5), of the first limiting structure, a second matching portion is arranged in the middle of the arc-shaped groove, the connecting rod (3) can rotate and fold towards two sides of the central axis (a) of the outer wall of the cover cap (1), the connecting rod (3) rotates on the cover cap (1), and when the connecting rod (3) is overlapped with the central axis (a) of the outer wall of the cover cap (1), the second limiting structure limits the connecting rod (3) to rotate.

8. The combined folding rotary handle of switching electric appliance according to any of claims 1 to 4, characterized in that: the first limiting structure comprises pin holes formed in the cover cap (1) and the connecting rod (3) and a pin shaft penetrating through the pin holes, and the connecting rod (3) can be rotated and folded on the cover cap (1) under the matching of the pin shaft and the pin holes.

9. The combined folding rotary handle for switching electrical equipment according to any one of claims 1 to 4, characterized in that the connecting rod (3) is Y-shaped as a whole, the connecting rod (3) comprises two connecting arms, one ends of the two connecting arms are connected together, and a bending is provided at the middle part of each connecting arm to open the other ends of the two connecting arms to form an open slot (2).

10. A switching apparatus, characterized in that: the combined folding rotary handle of switching device of any claim 1-9, the switching device is a circuit breaker, the circuit breaker includes an operating mechanism (5), the operating mechanism (5) includes a fan-shaped cover and a contact support, the fan-shaped cover includes a fan-shaped surface facing the cover (1) and an arc-shaped surface facing the operating mechanism (5), the fan-shaped surface is provided with an indicating part for indicating the closing and opening of the circuit breaker, the middle part of the fan-shaped surface is fixedly connected with the cover (1), two sides of the arc-shaped surface are connected with sheet-shaped connecting rods, and the sheet-shaped connecting rods are rotatably connected with the contact support of the operating mechanism (5).