CN118156077A - Strip-shaped fuse type isolating switch with three-position state switching function - Google Patents

Abstract

The invention discloses a strip-shaped fuse type isolating switch with three-position state switching, which comprises the following components: the shell is provided with a containing cavity, the containing cavity is provided with a rotating shaft and a sliding groove, and the sliding groove is provided with a limiting structure; the carrier device is provided with a melting core, the carrier is provided with a sliding part and a matching part matched with the rotating shaft, and the sliding part slides in the chute; in a first state, the carrier is matched with the shell, and the melting core is accommodated in the accommodating cavity; the carrier rotates around the rotating shaft, and when the sliding part slides to be propped against the limiting structure, a second state is formed; continuing to rotate the carrier, enabling the sliding part to pass through the limiting structure, enabling the carrier to rotate around the sliding part, and enabling the rotating shaft to be separated from the matching part to form a third state; adopt this kind of structure setting, realized spacing effect through limit structure for the carrier can't cooperate with the casing easily, secondly, through the setting of two rotation centers, increased the rotation angle of carrier, for prior art, in this structure, the rotation angle increase of carrier is convenient for change the operation of melting core more.

Description

Strip-shaped fuse type isolating switch with three-position state switching function

Technical Field

The invention relates to the technical field of electricity, in particular to a strip-shaped fuse type isolating switch with three-position state switching.

Background

The strip-type fuse type isolating switch is used for protecting a main circuit. The strip-shaped fuse type isolating switch comprises a shell and a carrier, wherein the carrier is provided with a melting core, one end of the carrier is rotationally connected with the shell, and the other end of the carrier is fixedly connected with the shell. The miniature fuse type isolating switch can be connected with the shell through a carrier in a rotating mode or matched with the shell through a pull type connection. Because the whole volume of bar fuse type isolator is big, the size, the weight of melting core all are greater than the melting core in the miniature fuse type isolator far away. The strip-shaped fuse type isolating switch has the defects that the pulling difficulty is high due to the large weight, and secondly, the carrier falls into the shell again easily in the pulling process, so that serious potential safety hazards exist. Therefore, the strip-shaped fuse type isolating switch adopts a rotary connection mode, namely one end of the carrier is rotationally connected with the shell, and the other end of the carrier is fixedly connected with the shell.

The rotary connection mode has the problems that the strip-shaped fuse type isolating switch has only two positions, one is a closing position, namely, the melting core is communicated with a circuit inside the shell; the other is a brake-separating position, namely, the separation of the melting core and the circuit inside the shell is realized by rotating the carrier. When the strip-shaped fuse type isolating switch has a short-circuit fault, the strip-shaped fuse type isolating switch needs to be overhauled, the melting core is replaced, and the strip-shaped fuse type isolating switch usually works under load in the overhauling process. In the overhauling and disassembling process (opening position), due to the limitation of the rotation angle of the carrier and the shell, no limiting and fixing structure exists between the carrier and the shell, if false touch occurs or the force applied by an operator on the carrier in the disassembling process disappears (such as hand shake and the like), the carrier falls into the shell again under the action of gravity (the carrier device has a melting core, the weight of the melting core is large), and the melting core is communicated with a circuit inside the shell again, so that accidents such as electric shock and the like occur in the overhauling process. It has been found that the disassembly process of the core is also at risk of contact with the power (or load) side contact return. The limiting and fixing of the carrier in the maintenance state is a technical problem which needs to be solved by the person skilled in the art.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is how to realize the limit fixation of the carrier in the overhaul state. To this end, a three-position state-switching strip-fuse type disconnecting switch includes:

The shell is provided with a containing cavity, the containing cavity is provided with a rotating shaft and a sliding groove, and the sliding groove is provided with a limiting structure;

The carrier device is provided with a melting core, the carrier is provided with a sliding part and a matching part matched with the rotating shaft, and the sliding part slides in the sliding groove;

A first state in which the carrier is matched with the shell, and the melting core is accommodated in the accommodating cavity; the carrier rotates around the rotating shaft, and when the sliding part slides to be propped against the limiting structure, a second state is formed; and continuing to rotate the carrier, wherein the sliding part passes over the limiting structure, the carrier rotates around the sliding part, and the rotating shaft is separated from the matching part to form a third state.

The matching part is a U-shaped groove and comprises a first groove wall and a second groove wall, and the lengths of the first groove wall and the second groove wall are different.

The chute is provided with a limiting protrusion, and the limiting protrusion forms the limiting structure.

The outer wall of the shell is provided with a fixing groove, an elastic piece is accommodated in the fixing groove, the fixing groove is communicated with the sliding groove, and the elastic piece extends to the sliding groove to form the limiting structure.

The elastic piece comprises an elastic bulge and two fixing feet, two ends of the elastic bulge are respectively connected with the two fixing feet, the fixing feet are fixedly connected with the fixing grooves, and the elastic bulge part extends to the sliding groove.

The fixed slot is provided with a fixed column, the fixed foot is of a U-shaped structure, and the fixed foot is sleeved on the fixed column.

One of the carrier and the accommodating cavity is provided with a buckle, and the other one of the carrier and the accommodating cavity is provided with a clamping groove matched with the buckle.

The carrier is provided with a rotating arm, the sliding part and the matching part are positioned on the rotating arm, the shell is provided with a limiting groove, and the side wall of the limiting groove is positioned on the rotating track of the rotating arm.

The shell is provided with a concave cavity, the concave cavity is communicated with the accommodating cavity, the concave cavity is accommodated with a micro switch, the carrier is provided with a driving part, and the micro switch is located on the movement track of the driving part.

The carrier is provided with a first locking hole, the shell is provided with a second locking hole, and the first locking hole is matched with the second locking hole in the first state.

The distance from the rotating shaft to the top surface of the accommodating cavity is greater than the distance from the sliding part to the top surface of the accommodating cavity.

The housing is provided with a flange extending upwardly.

The technical scheme of the invention has the following advantages:

1. The strip-shaped fuse type isolating switch with the three-position state switching provided by the invention has the advantages that the first state is a closing state, the carrier is fixedly connected with the shell, the fuse core is matched with a circuit inside the shell to form an electric communication effect, the second state is a separating state, the carrier rotates around the rotating shaft to realize the effect of rotating the carrier relative to the shell, and at the moment, the fuse core rotates simultaneously to separate the fuse core from the circuit inside the shell to form a disconnection effect; the third state is the maintenance state, and when limit structure was passed over to the slider, the carrier rotated around the slider this moment, and owing to limit structure's setting, the carrier can not drop to inside the casing easily, and operating personnel need give the carrier a force of overcoming limit structure to make the carrier cooperate with the casing again. Adopt this kind of structure setting, realized spacing effect through limit structure for the carrier can't just cooperate with the casing easily, secondly, through the setting of two rotation centers, increased the rotation angle of carrier, for prior art, in this structure, the rotation angle increase of carrier is convenient for change the operation of melting the core more, and it is more convenient that the melting core takes, makes the dismantlement process of melting the core safer, reduces the risk of electrocuting.

2. According to the strip-shaped fuse type isolating switch with the three-position state switching, the matching part is the U-shaped groove, so that the rotating shaft can be separated from the matching part, the rotating shaft is not used as the rotating center any more, the rotating center can be changed, and secondly, the different lengths of the two groove walls are limited, so that after separation, the matching part is matched with the rotating shaft again through the matching between the first groove wall or the second groove wall and the rotating shaft, and the rotating effect taking the rotating shaft as the rotating center is formed.

3. According to the strip-shaped fuse type isolating switch with the three-position state switching function, the limiting effect is achieved through the arrangement of the limiting protrusions, the width of the position of the limiting protrusion, where the sliding groove is arranged, is smaller than that of the sliding portion, the effect of interference fit is achieved, and when the sliding portion passes through the limiting protrusion, the limiting effect is achieved. The limiting bulge and the shell are integrally formed, namely the limiting bulge is made of plastic, and the sliding part can cross the limiting bulge due to certain elastic deformation of the plastic. The number of the limiting protrusions can be two, and the two limiting protrusions are symmetrically arranged.

4. According to the strip-shaped fuse type isolating switch with the three-position state switching, the elastic piece is arranged, one end of the elastic piece is fixedly connected with the fixing groove, the other end of the elastic piece extends to the sliding groove, when the sliding part abuts against the elastic piece, an elastic shrinkage effect is formed due to the elastic action of the elastic piece, the sliding part can pass through the elastic piece at the moment, and when the force exerted on the elastic piece by the sliding part disappears, the elastic piece is reset, so that the effect of limiting the sliding part is formed. The elastic member is an independent part, can be made of metal, can be made of other wear-resistant materials (such as wear-resistant plastics), and can be replaced after the elastic member is damaged. Both sides of the sliding groove are provided with fixing grooves, and the two elastic pieces are matched. In addition, the elastic piece and the limiting protrusion can be matched, and the elastic piece and the limiting protrusion are overlapped to form a limiting structure.

5. According to the strip-shaped fuse type isolating switch with the three-position state switching function, the elastic piece is fixed in the fixing mode, the elastic piece and the fixing groove are detachably mounted, replacement is more convenient, and the elastic bulge is enabled to obtain a certain supporting effect through connection and fixing between the fixing foot and the fixing groove, so that reset is better achieved.

6. According to the strip-shaped fuse type isolating switch with the three-position state switching function, the fixing pins are directly sleeved on the fixing columns, so that the elastic piece is more convenient to install and detach.

7. The invention provides a strip-shaped fuse type isolating switch with three-position state switching, which is characterized in that a clamping groove is matched with a buckle to form connection and fixation between a carrier and a shell, wherein the clamping groove and the buckle are locked in a small area, and the locking effect between the buckle and the clamping groove can be relieved only by pulling the carrier with a certain force.

8. According to the strip-shaped fuse type isolating switch with the three-position state switching, the rotating arm and the limiting groove are set to form the limiting effect, in the overhauling state, the rotating arm is propped against the limiting groove, meanwhile, the sliding part is matched with the limiting structure to form the double limiting effect, and the carrier can form the limiting at the position of the maximum rotating angle, so that the melting core is more convenient to replace.

9. According to the strip-shaped fuse type isolating switch with the three-position state switching, the driving part is matched with the micro switch to form a signal transmission effect, when the carrier is matched with the shell, the melting core is connected with a circuit in the shell, and at the moment, the driving part drives the micro switch to act to form signal transmission.

10. According to the strip-shaped fuse type isolating switch with the three-position state switching function, in the first state, the first locking hole is matched with the second locking hole, so that an operator can form a locking effect through the locking piece, and misoperation of other people is prevented. In this state, the first locking hole and the second locking hole are arranged coaxially.

11. According to the strip-shaped fuse type isolating switch with the three-position state switching, the heights of the sliding part and the rotating shaft are different, when the sliding part is higher than the rotating shaft, the carrier rotates relative to the sliding part, the rotation angle of the carrier is increased, and the replacement of the melting core can be better realized.

12. According to the strip-shaped fuse type isolating switch with the three-position state switching function, the flange is arranged on the top surface of the shell, so that the sealing effect of the sliding groove is achieved, and the strength of the sliding groove is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a three-position state-switching strip-type fuse isolating switch according to the present invention;

fig. 2 is a schematic structural diagram of a three-position-state-switching strip-type fuse isolating switch according to the present invention;

FIG. 3 is a side view of a three position, switched strip fuse isolator according to the present invention;

FIG. 4 is an enlarged view of a portion A of FIG. 3;

FIG. 5 is a cross-sectional view of a first state provided by the present invention;

FIG. 6 is a cross-sectional view of a first state provided by the present invention;

FIG. 7 is a cross-sectional view of a second state provided by the present invention;

FIG. 8 is a cross-sectional view of a second state provided by the present invention;

FIG. 9 is a cross-sectional view of a third state provided by the present invention;

FIG. 10 is a cross-sectional view of a third state provided by the present invention;

FIG. 11 is a cross-sectional view of a third state to second state switch provided by the present invention;

fig. 12 is a cross-sectional view of a third state to second state switch provided by the present invention;

FIG. 13 is a schematic view of the structure of the carrier and the core according to the present invention;

FIG. 14 is a schematic view of a carrier according to the present invention;

FIG. 15 is a schematic view of a carrier according to the present invention;

FIG. 16 is a side view of a carrier provided by the present invention;

FIG. 17 is a side view of a carrier provided by the present invention;

fig. 18 is a schematic structural view of an elastic member according to the present invention.

Reference numerals illustrate:

11. A housing; 12. a rotating shaft; 13. a chute; 14. a carrier; 15. a melting core; 16. a sliding part; 17. a mating portion; 18. an elastic member; 19. a buckle; 20. a clamping groove; 21. a handle; 111. a receiving chamber; 112. a fixing groove; 113. a limit groove; 114. a cavity; 115. a second locking hole; 116. a flange; 131. a limit protrusion; 141. a rotating arm; 142. a driving section; 143. a first locking hole; 171. a first groove wall; 172. a second groove wall; 181. an elastic protrusion; 182. a fixed foot; 1121. and fixing the column.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Example 1

The present embodiment provides a strip-type fuse type isolating switch with three-position state switching, as shown in fig. 1 to 18, including:

The housing 11, the housing 11 is provided with a receiving chamber 111, the receiving chamber 111 is provided with a rotating shaft 12 and a sliding groove 13, and the number of the rotating shaft 12 and the sliding groove 13 is related to the number of the carriers 14. The chute 13 is provided with a limit structure. In this embodiment, the rotary shaft 12 is located on the inner wall of the accommodating chamber 111, specifically, on the inner side of the long side wall of the housing 11. The sliding groove 13 may be a groove, the sliding groove 13 may be a through groove, and the sliding groove 13 is also located on the inner side of the long side wall of the shell 11.

The carriers 14, one housing 11 may be provided with one carrier 14, two carriers 14, or three carriers 14, in which case the number of carriers 14 is described as three, and the three carriers 14 are identical in structure. The three carriers 14 may be arranged independently of each other, i.e. when one carrier 14 rotates relative to the housing 11, the remaining carriers 14 do not act; it is also possible to work for three carriers 14 synchronously, i.e. to link three carriers 14 by means of one link, forming a linking effect. The carrier 14 is provided with a melting core 15, and the fixing manner between the melting core 15 and the carrier 14 can be a sliding type and elastic clamping piece matching or a plug type matching, and the fixing manner is the prior art, so the detailed description is omitted in this embodiment. The carrier 14 is provided with a sliding part 16 and a matching part 17 matched with the rotating shaft 12, the sliding part 16 slides in the sliding groove 13, when the carrier 14 rotates, the sliding part 16 can slide in the sliding groove 13, and the sliding groove 13 can be arranged obliquely or vertically and longitudinally. The direction of the chute 13 and the structure of the chute 13 can be adjusted by those skilled in the art according to actual requirements. The rotating shaft 12 is matched with the matching part 17, so that the rotating effect of the carrier 14 relative to the rotating shaft 12 is achieved. In this embodiment, one carrier 14 is provided with two sliding portions 16 and two matching portions 17, and two sliding portions 16 and one matching portion 17 form one group, and the other sliding portion 16 and the other matching portion 17 form another group, and the two groups of structures are respectively arranged on two sides of the carrier 14 and are symmetrically arranged. Similarly, a carrier 14 is correspondingly matched with two rotating shafts 12 and two sliding grooves 13 in the shell 11, so that a one-to-one matching effect is formed, namely, one rotating shaft 12 is correspondingly matched with one matching part 17, and one sliding part 16 is correspondingly matched with one sliding groove 13.

The first state is a closing state, that is, the carrier 14 is matched with the housing 11, that is, the carrier 14 is connected and fixed with the housing 11, at this time, the melting core 15 is accommodated in the accommodating cavity 111, and the melting core 15 is matched with a circuit inside the housing 11 to form an electrical communication effect. When maintenance is required, the carrier 14 is rotated, at this time, the carrier 14 rotates around the rotating shaft 12, that is, the carrier 14 rotates around the center of the rotating shaft 12 as a rotation center, the effect that the carrier 14 rotates relative to the housing 11 is achieved, the sliding part 16 also moves along with the carrier 14, at this time, the sliding part 16 slides in the sliding groove 13, and meanwhile, the melting core 15 also rotates along with the carrier 14, so that the melting core 15 is separated from a circuit inside the housing 11, a breaking effect is formed, and when the sliding part 16 slides to abut against the limiting structure, a second state is formed, and the second state is a brake-separating state. The carrier 14 continues to rotate, at this time, the carrier 14 rotates around the rotating shaft 12, when the sliding part 16 passes over the limiting structure, the sliding groove 13 and the limiting structure cooperate to form the limiting fixation of the sliding part 16, at this time, the sliding part 16 can only rotate, the sliding part 16 cannot slide up and down, and the carrier 14 rotates around the sliding part 16, that is, the carrier 14 rotates around the center of the sliding part 16 as the rotation center. At this time, the rotating shaft 12 is separated from the engaging portion 17 to form a third state, and the third state is an inspection state, and due to the setting of the limiting structure, the carrier 14 cannot easily fall into the housing 11, and an operator needs to give the carrier 14a force overcoming the limiting structure, so that the carrier 14 is engaged with the housing 11 again. Adopt this kind of structure setting, realized spacing effect through limit structure for carrier 14 can't just cooperate with casing 11 easily, secondly, through the setting of two rotation centers, increased carrier 14's rotation angle, for prior art, in this structure, carrier 14's rotation angle increases, is convenient for change the operation of melting core 15 more, makes the dismantlement process of melting core 15 safer, reduces the electric shock risk.

Specifically, as shown in fig. 1 to 17, the engaging portion 17 is a U-shaped groove, the engaging portion 17 is located at an end of the carrier 14, the engaging portion 17 is provided with a U-shaped opening, when the rotating shaft 12 is located in the U-shaped groove, the carrier 14 rotates relative to the rotating shaft 12, and when the carrier 14 rotates around the sliding portion 16, the engaging portion 17 is not associated with the rotating shaft 12, specifically, the engaging portion 17 and the rotating shaft 12 are in a separated state. The matching portion 17 includes a first groove wall 171 and a second groove wall 172, wherein the lengths of the first groove wall 171 and the second groove wall 172 are different, in this embodiment, the first groove wall 171 is located above the second groove wall 172, i.e. the distance between the first groove wall 171 and the top surface of the accommodating cavity 111 is smaller than the distance between the second groove wall 172 and the top surface of the accommodating cavity 111, and the length of the first groove wall 171 is smaller than the length of the second groove wall 172. One skilled in the art can adjust the lengths of the first groove wall 171 and the second groove wall 172 according to actual requirements. The matching part 17 is a U-shaped groove, so that the rotating shaft 12 can be separated from the matching part 17, the rotating shaft 12 is not used as a rotating center any more, the rotating center can be changed, and secondly, different lengths of the two groove walls are limited, so that after separation, the matching part 17 is matched with the rotating shaft 12 again through the matching between the first groove wall 171 or the second groove wall 172 and the rotating shaft 12, and a rotating effect taking the rotating shaft 12 as the rotating center is formed. In the first state, the rotating shaft 12 is located in the U-shaped groove, and the rotating shaft 12 is attached to the first groove wall 171 or the second groove wall 172 to form a rotating effect. In the second state, when the sliding portion 16 abuts against the limiting structure, the first groove wall 171 abuts against the rotating shaft 12 to form a limit, and at this time, the first groove wall 171 is located at a critical point. When the sliding portion 16 passes over the limiting structure, the first groove wall 171 rotates along with the sliding portion, the first groove wall 171 just passes over the rotating shaft 12, the first groove wall 171 is separated from the rotating shaft 12, and at this time, the carrier 14 rotates around the sliding portion 16. On the contrary, when the third state rotates toward the second state, the carrier 14 is rotated in the opposite direction, and the second groove wall 172 abuts against the rotating shaft 12 at this time, the sliding portion 16 is continuously driven to pass over the limiting structure, and when the sliding portion 16 passes over the limiting structure, the rotating shaft 12 reenters the U-shaped groove again at this time, so as to form the effect of rotating the carrier 14 around the rotating shaft 12. In addition, as shown in fig. 17, the mating portion 17 may also be a special-shaped hole, including a U-shaped hole that mates with the rotating shaft 12 and a hole larger than the size of the rotating shaft 12, and in the first state, the rotating shaft 12 mates with the U-shaped hole to form a rotating structure, when the sliding portion 16 passes over the limiting structure, the rotating shaft 12 enters into the hole larger than the size of the rotating shaft 12, and at this time, the carrier 14 no longer rotates around the rotating shaft 12.

Specifically, as shown in fig. 1 to 12, in this embodiment, the chute 13 is disposed vertically and longitudinally. In this embodiment, for better description, the long side wall of the housing 11 is in the Y-axis direction, the short side wall of the housing 11 is in the X-axis direction, the height direction of the housing 11 is in the Z-axis direction, and the chute 13 is located in the Z-axis direction. In this embodiment, the sliding groove 13 is specifically located on the long side wall of the housing 11, and the sliding portion 16 extends toward the X-axis direction, that is, the sliding portion 16 extends toward the outside of the housing 11, so that the sliding portion 16 is engaged with the sliding groove 13. The chute 13 may be a through chute, i.e. the chute 13 penetrates through the long side wall of the housing 11; the chute 13 may also be a groove structure, i.e. it has a bottom surface, the chute 13 is located inside the long side wall of the housing 11, and the chute 13 does not penetrate the long side wall of the housing 11. In the present embodiment, the chute 13 is taken as an example of a through slot. When the chute 13 is vertically and longitudinally arranged, the sliding track of the sliding portion 16 also slides up and down along the Z-axis direction.

In this embodiment, as shown in fig. 13 to 17, one carrier 14 is provided with two sliding portions 16, and the two sliding portions 16 are opposite in orientation. The length of the sliding portion 16 extending to the sliding groove 13 can be adjusted according to actual requirements, the sliding portion 16 can extend to the middle portion of the sliding groove 13, the sliding portion 16 can also extend to the outermost edge position of the sliding groove 13, so that the sliding portion 16 and the outer side face of the long side wall of the housing 11 are arranged in a coplanar manner, and the sliding portion 16 can also directly penetrate through the sliding groove 13 and extend to the outside of the housing 11. The matching area between the sliding portion 16 and the chute 13 can be adjusted by a person skilled in the art according to actual requirements.

Specifically, as shown in fig. 1 to 12, the chute 13 is provided with a limit protrusion 131, and the limit protrusion 131 forms a limit structure. The limiting bulge 131 is positioned on the inner wall of the chute 13, and the limiting bulge 131 extends towards the opposite inner wall. Here, the limiting protrusion 131 may be triangular, trapezoidal or arc, and a person skilled in the art may adjust according to actual needs, and it should be noted that, two sides of the limiting protrusion 131 have a certain guiding function, and a side surface of the limiting protrusion 131 may be from a connection position with an inner wall of the chute 13 to an inclined plane or an arc surface at a top end of the limiting protrusion 131. Under normal condition, the width of spout 13 and the width adaptation of sliding part 16 owing to spacing protruding 131 for the width in spacing protruding 131 place area reduces, and sliding part 16 offsets with spacing protruding 131 this moment, forms interference fit's effect, thereby realizes spacing fixed effect. The limiting bulge 131 and the shell 11 are integrally formed, namely, the limiting bulge 131 is made of plastic, and the sliding part 16 can cross the limiting bulge 131 due to the fact that the plastic is elastically deformed, so that the limiting bulge 131 forms the limiting effect of the sliding part 16, and the limiting effect can be relieved only if a force is applied to the sliding part 16 to enable the sliding part 16 to move in the opposite direction. The number of the limiting protrusions 131 can be two, the two limiting protrusions 131 are symmetrically arranged, namely, the sliding part 16 slides to the position of the limiting protrusions 131, and two side walls of the sliding part 16 respectively prop against the two limiting protrusions 131 to form interference fit. When the number of the limiting protrusions 131 is one, namely, two side walls of the sliding portion 16 respectively prop against the limiting protrusions 131 and the inner wall of the sliding groove 13. In the present embodiment, two limit protrusions 131 are described as an example.

Specifically, as shown in fig. 2-4 and 18, the outer wall of the housing 11 is provided with a fixing groove 112, and the fixing groove 112 is specifically located on the outer side surface of the long side wall. The fixing groove 112 accommodates the elastic member 18, the fixing groove 112 is communicated with the chute 13, in this embodiment, the fixing groove 112 has a groove structure, the chute 13 has a through groove structure, and the fixing groove 112 is located at one side of the chute 13, which may be the left side or the right side. The number of the fixing slots 112 can be set according to practical requirements, that is, one sliding slot 13 can correspond to one fixing slot 112; or one chute 13 corresponds to two fixing grooves 112, and the two fixing grooves 112 are respectively arranged at the left side and the right side of the chute 13. In the present embodiment, one chute 13 is described as corresponding to two fixing grooves 112. The two fixing grooves 112 have the same structure, and the two fixing grooves 112 are symmetrically arranged. The elastic member 18 is accommodated in the fixing groove 112, in this embodiment, a portion of the elastic member 18 is located in the fixing groove 112, and a portion of the elastic member extends to the sliding groove 13 to form a limiting structure. By adopting the arrangement of the elastic member 18, one end of the elastic member 18 is fixedly connected with the fixing groove 112, the other end of the elastic member 18 extends to the sliding groove 13, when the sliding portion 16 is propped against the elastic member 18, an elastic shrinkage effect is formed due to the elastic action of the elastic member 18, at this time, the sliding portion 16 can pass over the elastic member 18, and when the force exerted on the elastic member 18 by the sliding portion 16 is lost, the elastic member 18 is reset, so that the effect of the sliding portion 16 is formed. The elastic member 18 is an independent component, and may be made of metal, or may be made of other wear-resistant materials (such as wear-resistant plastics, and plastics with wear resistance higher than that of the housing 11), and the limitation of the metal or other wear-resistant materials is adopted, so that the service life and the mechanical life can be improved. And after the elastic element 18 is damaged, the elastic element 18 can be replaced, so that the service life is further prolonged, the elastic element 18 is installed from the outside, the shell 11 is not required to be disassembled, and the installation is more convenient. In addition, the elastic member 18 may be engaged with the limiting protrusion 131, that is, the sliding groove 13 is provided with the limiting protrusion 131, the limiting protrusion 131 is located at a side close to the accommodating cavity 111, and the elastic member 18 is located in the fixing groove 112, that is, the elastic member 18 is located at a side of the sliding groove 13 close to the long side wall of the housing 11. The limiting bulge 131 is attached to the part, extending to the chute 13, of the elastic piece 18, and is arranged in a overlapping manner in the X-axis direction, and the limiting bulge and the elastic piece are combined and overlapped to form a limiting structure.

Specifically, as shown in fig. 2-4 and 18, the elastic member 18 includes an elastic protrusion 181 and two fixing pins 182, two ends of the elastic protrusion 181 are respectively connected with the two fixing pins 182, and the fixing pins 182 are fixedly connected with the fixing slots 112, in this embodiment, the two fixing pins 182 are arranged at intervals, i.e. the two fixing pins 182 are not directly connected with each other, and form a connection relationship through the elastic protrusion 181. The elastic protrusions 181 extend partially to the chute 13. The elastic piece 18 adopts this kind of fixed mode, has firstly formed the detachable installation between elastic piece 18 and the fixed slot 112 for it is more convenient to change, and secondly, through the fixed connection between fixed foot 182 and the fixed slot 112, makes elastic bulge 181 obtain certain supporting effect, better realization reset. In this embodiment, the elastic member 18 is integrally formed, and when the elastic member 18 is made of metal, the elastic member 18 is formed by stamping and bending, and when the elastic member 18 is made of plastic, the elastic member can be integrally formed by injection molding.

Specifically, as shown in fig. 2-4 and 18, the fixing slot 112 is provided with a fixing column 1121, the fixing leg 182 has a U-shaped structure, and the fixing leg 182 is sleeved on the fixing column 1121. The fixing leg 182 is directly sleeved on the fixing column 1121, so that the elastic piece 18 is more convenient to mount and dismount. In this embodiment, the two fixing legs 182 are disposed in mirror symmetry, i.e. the U-shaped openings of the fixing legs 182 located above are downward, and the U-shaped openings of the fixing legs 182 located below are upward. In this embodiment, the elastic member 18 is installed towards the fixing slot 112 in the X-axis direction, so as to form a sleeved installation effect, and the elastic member 18 is more convenient to install.

Specifically, in the third state, the sliding portion 16 cooperates with the limiting structure and the chute 13 to form a relative rotation. In this embodiment, the sliding chute 13 has a track-shaped structure, that is, the upper and lower ends of the sliding chute 13 are cambered surfaces, and the upper end of the sliding portion 16 is also cambered surface, and at this time, the sliding portion 16 may be circular, or may be track-shaped, or may be elliptical. In the third state, when the sliding portion 16 passes over the limiting structure, the upper end of the sliding portion 16 is an arc surface, the upper end of the sliding slot 13 is also an arc surface, the two arc surfaces cooperate to form a relative rotation effect, and meanwhile, the sliding portion 16 abuts against the limiting structure, specifically, the sliding portion 16 cooperates with the two limiting protrusions 131, or the sliding portion 16 cooperates with the two elastic protrusions 181. The upper end of the chute 13 and the limiting structure form a limit of the sliding part 16, and at this time, the sliding part 16 can only rotate, so the carrier 14 rotates around the sliding part 16. In addition, the sliding groove 13 may be a square groove, and the top surface of the sliding groove 13 and the sliding portion 16 form an external cutting structure.

Specifically, as shown in fig. 1 to 17, one of the carrier 14 and the accommodating chamber 111 is provided with a catch 19, and the other of the carrier 14 and the accommodating chamber 111 is provided with a catch groove 20 that mates with the catch 19. The engagement of the locking groove 20 with the locking groove 19 forms a connection and fixation between the carrier 14 and the housing 11, and it should be noted that the locking groove 20 and the locking groove 19 are locked in a small area, and the locking effect between the locking groove 19 and the locking groove 20 can be released only by pulling the carrier 14 with a certain force. Here, the certain force is specifically to prevent the occurrence of false touching, for example, the operator unintentionally touches the carrier 14, and the unlocking cannot be performed, and the unlocking can be performed only when the operator actively consciously operates the carrier 14. In this embodiment, the buckle 19 is located at the side of the carrier 14, and the clamping groove 20 is located in the accommodating cavity 111. The catch 19 is remote from the mating portion 17 and the sliding portion 16. In the first state, when the carrier 14 is matched with the shell 11, the buckle 19 is matched with the clamping groove 20 to form a connection fixing effect.

Specifically, as shown in fig. 1 to 17, the carrier 14 is provided with two rotating arms 141, in this embodiment, the number of the rotating arms 141 is two, the two rotating arms 141 are separately provided on two sides of the carrier 14, the sliding portion 16, the mating portion 17, and the buckle 19 are all located on the rotating arms 141, and the mating portion 17 is located at an end of the rotating arms 141. The shell 11 is provided with a limit groove 113, the limit groove 113 is positioned on the top surface of the shell 11, and the side wall of the limit groove 113 is positioned on the rotating track of the rotating arm 141. Setting of the rotating arm 141 and the limiting groove 113 forms a limiting effect, in the third state, the rotating arm 141 and the limiting groove 113 are propped against, and meanwhile, the sliding part 16 is matched with the limiting structure to form a double limiting effect, the carrier 14 forms a limit at the position of the maximum rotating angle, so that the melting core 15 is more convenient to replace, at the moment, the melting core 15 and the shell 11 form a vertical structure, or the angle formed by the melting core 15 and the shell 11 is an obtuse angle.

Specifically, as shown in fig. 1-3, the housing 11 is provided with a cavity 114, where the cavity 114 is located on a long side wall of the housing 11, and the cavity 114 communicates with the accommodating cavity 111, where the cavity 114 is specifically an inward concave structure of the long side wall of the housing 11, so that an upper opening of the cavity 114 communicates with the accommodating cavity 111. The cavity 114 accommodates a micro switch, and the micro switch and the cavity 114 can be fixed by bolts or by buckles 19. The carrier 14 is provided with a drive part 142, where the drive part 142 is located at the swivel arm 141. The micro switch is located on the movement trace of the driving part 142. The driving part 142 cooperates with the micro switch to provide a signal transmission effect. In the first state, after the carrier 14 is matched with the housing 11, the melting core 15 is connected and matched with a circuit inside the housing 11, and at this time, the driving part 142 drives the micro switch to act, so as to form signal transmission. Those skilled in the art will know how to fix the micro-switch to the cavity 114, and the micro-switch is not shown in the drawings.

Specifically, as shown in fig. 2 and 15, the carrier 14 is provided with a first locking hole 143, and the housing 11 is provided with a second locking hole 115, where the second locking hole 115 is located on the top surface of the housing 11, and in the first state, the first locking hole 143 is engaged with the second locking hole 115. In the first state, the first locking hole 143 is matched with the second locking hole 115, so that an operator can form a locking effect through the locking piece, and misoperation of other people is prevented. Here, the first locking hole 143 and the second locking hole 115 are coaxially disposed.

Specifically, in the second state and the third state, the distance from the rotating shaft 12 to the top surface of the accommodating cavity 111 is greater than the distance from the sliding portion 16 to the top surface of the accommodating cavity 111, that is, the rotating shaft 12 is located below, the sliding portion 16 is located above, and the sliding portion 16 is closer to the top surface of the accommodating cavity 111 than the rotating shaft 12. The carrier 14 moves vertically upwards from the lower end of the chute 13 along the Z-axis direction during the rotation from the first state to the second state and vice versa, and the position of the rotating shaft 12 is constant, so that the sliding portion 16 gradually exceeds the height of the rotating shaft 12, and the sliding portion 16 is closer to the top surface of the accommodating cavity 111 and even exceeds the top surface of the accommodating cavity 111. When the sliding portion 16 is higher than the rotating shaft 12, the carrier 14 rotates relative to the sliding portion 16, and the rotation angle of the carrier 14 becomes larger, so that the replacement of the melting core 15 can be better realized. Here, the relative position between the chute 13 and the rotating shaft 12 can be adjusted according to actual requirements.

Specifically, as shown in fig. 1-12, the housing 11 is provided with a flange 116, the flange 116 is located on the top surface of the housing 11, the flange 116 extends vertically upwards along the Z-axis direction, and the extending height of the flange 116 can be adjusted according to practical requirements. In this embodiment, the flange 116 is located in the upward extending direction of the chute 13, and the flange 116 forms a sealing effect of the chute 13, increasing the strength of the upper end of the chute 13, and preventing the sliding portion 16 from moving upward to the outside of the chute 13 during use.

Specifically, as shown in fig. 1-3, the portable electronic device further comprises a handle 21, and the handle 21 is matched and fixed with the carrier 14 to form a driving effect. One handle 21 corresponds here to one carrier 14, creating a one-to-one effect. When three carriers 14 are linked by the linkage, only one handle 21 is required to cooperate with the linkage to achieve the driving effect. In addition, the handle 21 and the carrier 14 may be integrally formed.

Specifically, in the first state, the carrier 14 is matched with the housing 11, at this time, the carrier 14 rotates in place, the melting core 15 is matched with a circuit inside the housing 11, the buckle 19 is connected and fixed with the clamping groove 20, so that a closing fixing effect is formed, besides, an operator can also lock the carrier 14 and the housing 11 through the first locking hole 143 and the second locking hole 115, a locking protection effect is formed, and only the unlocking is performed, so that the rotation between the carrier 14 and the housing 11 can be realized. In the first state, the rotating shaft 12 is attached to the first groove wall 171, and the sliding portion 16 is located at the lowest end of the chute 13, where the height of the rotating shaft 12 is higher than the height of the sliding portion 16. The driving unit 142 is abutted against the micro switch, and the micro switch operates at this time, thereby achieving the effect of signal transmission.

When the whole circuit is in fault and needs to be overhauled, firstly, the locking between the carrier 14 and the shell 11 needs to be released, an operator can release the locking between the buckle 19 and the clamping groove 20 by driving the handle 21 due to the small-area matching between the buckle 19 and the clamping groove 20, then the carrier 14 rotates around the rotating shaft 12 by driving the handle 21, at the moment, the first groove wall 171 is matched with the rotating shaft 12 to form a relative rotation effect, the sliding part 16 moves vertically upwards gradually in the sliding groove 13, when the upper end of the sliding part 16 is propped against the limiting boss 131, a second state is formed, at the moment, a brake-separating state is formed, and at the second state, the first groove wall 171 is propped against the rotating shaft 12, and at the moment, the first groove wall 171 is positioned at a critical point. As the carrier 14 rotates, the melting core 15 rotates, so that the separation from the circuit inside the shell 11 is realized, the circuit is disconnected, and a separation gate is formed. During the rotation of the carrier 14, the driving part 142 also rotates, so that the force applied to the micro-switch disappears, and at this time, the micro-switch does not act, and the micro-switch can also transmit the working signal of the second state.

When the carrier 14 continues to rotate, the sliding portion 16 passes over the limiting protrusion 131, the upper end of the sliding portion 16 is matched with the upper end of the chute 13, so that the sliding portion 16 is located between the upper end of the chute 13 and the limiting protrusion 131, at this time, the sliding portion 16 cannot move in the Z-axis direction, the carrier 14 rotates around the center of the sliding portion 16, the first groove wall 171 rotates along with the sliding portion, the offset effect between the first groove wall 171 and the rotating shaft 12 is released, the first groove wall 171 is separated from the rotating shaft 12, and finally the rotating arm 141 abuts against the edge wall of the limiting groove 113, so as to form a third state, at this time, the carrier 14 is opened by a larger overturning angle, and an operator has enough space to replace the melting core 15, and at this time, even if a slight force acts on the carrier 14, the carrier 14 cannot fall into the housing 11 again. In the third state, the carrier 14 may be rotated to a maximum angle, i.e. the rotating arm 114 abuts against the limiting groove 113.

After the replacement of the melting core 15 is completed, an operator rotates the carrier 14, at this time, the second groove wall 172 abuts against the rotating shaft 12 to form a supporting and abutting effect, meanwhile, the sliding part 16 is driven to move downwards along the Z-axis direction, the sliding part 16 slides downwards beyond the limiting bulge 131, along with the rotation of the carrier 14 around the rotating shaft 12 until the carrier 14 is completely matched with the shell 11, the clamping buckle 19 is fixedly connected with the clamping groove 20, and therefore maintenance and closing operation can be completed, and normal operation of a circuit is guaranteed.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (10)

1. A three-position state-switching strip-fuse type disconnecting switch, comprising:

The device comprises a shell (11), wherein the shell (11) is provided with a containing cavity (111), the containing cavity (111) is provided with a rotating shaft (12) and a sliding groove (13), and the sliding groove (13) is provided with a limiting structure;

The carrier (14) is provided with a melting core (15), the carrier (14) is provided with a sliding part (16) and a matching part (17) matched with the rotating shaft (12), and the sliding part (16) slides in the sliding groove (13);

A first state in which the carrier (14) is engaged with the housing (11), and the core (15) is accommodated in the accommodating chamber (111); the carrier (14) rotates around the rotating shaft (12), and when the sliding part (16) slides to be propped against the limiting structure, a second state is formed; continuing to rotate the carrier (14), the sliding part (16) passes through the limiting structure, the carrier (14) rotates around the sliding part (16), and the rotating shaft (12) is separated from the matching part (17) to form a third state.

2. The three-position state switching strip fuse type disconnecting switch according to claim 1, wherein the mating portion (17) is a U-shaped groove, the mating portion (17) comprises a first groove wall (171) and a second groove wall (172), and the lengths of the first groove wall (171) and the second groove wall (172) are different.

3. The three-position state switching strip fuse type disconnecting switch according to claim 1, characterized in that the sliding chute (13) is provided with a limit protrusion (131), and the limit protrusion (131) forms the limit structure.

4. The three-position state switching strip-type fuse type isolating switch according to claim 1, wherein a fixing groove (112) is formed in the outer wall of the shell (11), an elastic piece (18) is accommodated in the fixing groove (112), the fixing groove (112) is communicated with the sliding groove (13), and the elastic piece (18) extends to the sliding groove (13) partially to form the limiting structure.

5. The three-position state switching strip-type fuse type disconnecting switch according to claim 4, wherein the elastic piece (18) comprises an elastic bulge (181) and two fixing legs (182), two ends of the elastic bulge (181) are respectively connected with the two fixing legs (182), the fixing legs (182) are fixedly connected with the fixing grooves (112), and the elastic bulge (181) extends to the sliding groove (13) partially.

6. The three-position state switching strip fuse type disconnecting switch of claim 5 wherein said fixed slot (112) is provided with a fixed post (1121), said fixed leg (182) is of a U-shaped configuration, said fixed leg (182) being sleeved on said fixed post (1121).

7. The three-position state-switching strip-fuse type disconnecting switch according to claim 1, characterized in that one of the carrier (14) and the accommodating cavity (111) is provided with a buckle (19), and the other of the carrier (14) and the accommodating cavity (111) is provided with a clamping groove (20) matched with the buckle (19).

8. The three-position state switching strip-type fuse type disconnecting switch according to claim 1, wherein the carrier (14) is provided with a rotating arm (141), the sliding part (16) and the matching part (17) are located on the rotating arm (141), the housing (11) is provided with a limiting groove (113), and a side wall of the limiting groove (113) is located on a rotating track of the rotating arm (141).

9. The three-position state switching strip-type fuse type isolating switch according to claim 1, wherein the housing (11) is provided with a concave cavity (114), the concave cavity (114) is communicated with the accommodating cavity (111), the concave cavity (114) accommodates a micro switch, the carrier (14) is provided with a driving part (142), and the micro switch is located on a movement track of the driving part (142).

10. The three-position state-switching strip fuse type disconnecting switch according to claim 1, characterized in that the carrier (14) is provided with a first locking hole (143), the housing (11) is provided with a second locking hole (115), and in the first state the first locking hole (143) cooperates with the second locking hole (115).