A clapper-type disconnector

Abstract

The present invention provides a clapper-type disconnector, which comprises a housing, a driving part and a contact part. The driving part includes a rotating member, an energy storage driving assembly and a contact driving member. The rotating member has a rotating shaft and a driving ring connected to the rotating shaft. The driving ring has an upwardly arched arc-shaped arched portion. An eccentrically arranged receiving groove is formed at the bottom of the rotating member. The energy storage driving assembly includes an energy storage spring and a driving block. The driving block is located above the driving ring and is provided with an abutting convex portion abutting against the arc-shaped arched portion. The energy storage spring is arranged above the driving block. The contact driving member is rotatably arranged at the bottom of the rotating member and is provided with a convex block received in the receiving groove. On the projection plane perpendicular to the central axis where the rotating shaft is located, the size of the receiving groove is larger than that of the convex block, and the central angle corresponding to the size difference between the two is larger than the central angle corresponding to the position where the abutting convex portion reaches the highest point of the arc-shaped arched portion from the starting position. It has the characteristics of compact structure, labor saving and safety.

Description

Technical Field

[0001] The present invention relates to the field of disconnect switches, and particularly to a clapper-type disconnect switch. Background Art

[0002] A disconnect switch is a switching device mainly used for "isolating power sources, performing switching operations, and connecting and disconnecting small-current circuits" without an arc-extinguishing function. Depending on different application scenarios (such as indoor or outdoor use), different isolation currents or voltages, and different functions, the designed structures are also different. The principle of the operating part of a disconnect switch is generally: storing energy in a energy storage spring by rotating a handle, and then driving the contact part to close and open by releasing the energy storage spring.

[0003] For example, in the disconnect switch involved in a disconnect switch operating handle disclosed in CN214797223U, the main shaft is driven to rotate together by rotating the handle, so as to realize the closing and opening of the paddle in the switch body. The specific layout method of this kind of disconnect switch is: the paddle is a structure similar to an ellipse, an energy storage spring is arranged on the periphery of the paddle, and a synchronously rotating contact driving part is arranged at the bottom of the paddle. When the main shaft rotates, it drives the paddle and the contact driving part to rotate synchronously, so as to compress and store energy in the peripheral energy storage spring. When the paddle rotates to the second half, the energy storage spring releases and pushes the paddle to continue rotating until the closing and opening actions are completed.

[0004] The above structure also has the following defects: 1. The energy storage spring is arranged on the periphery of the paddle to form a unified plane setting, occupying a large area, and can be applied to products with small currents (such as below 60A); however, if it is applied to large currents (such as 100A), other components (such as the contact part, energy storage spring, etc.) need to be strengthened or modified to improve performance. If modified on the above original layout, a large amount of space needs to be increased, resulting in a large increase in the size of the product; 2. The paddle always drives the contact driving part to rotate during the rotation process, that is, when rotating the handle, it is necessary to drive the energy storage spring to store energy and the contact part to act at the same time, and the applied force needs to be greater, and the closing action of the contact part cannot be carried out quickly, easily generating abnormalities such as electric arcs, thus causing potential safety hazards. Summary of the Invention

[0005] Therefore, to solve the above problems, the present invention provides a clapper-type disconnect switch, which has the characteristics of compact structure, labor-saving and safety.

[0006] To achieve the above object, the technical solution provided by the present invention is as follows:

[0007] A clapper - type disconnecting switch includes a housing, a driving part and a contact part arranged in the housing. The contact part is located below the driving part. The driving part includes a rotating part, an energy - storage driving assembly and a contact driving part. The rotating part has a rotating shaft and a driving ring connected to the rotating shaft. The driving ring has an upward - arched arc - shaped arched part. An eccentrically - arranged receiving groove is formed at the bottom of the rotating part. The energy - storage driving assembly includes an energy - storage spring and a driving block. The driving block is located above the driving ring and is provided with a butting convex part extending downward to abut against the arc - shaped arched part. The upper end of the energy - storage spring abuts against the top wall of the housing, and its lower end abuts against the driving block. The contact driving part is rotatably arranged at the bottom of the rotating part to drive the contact part to close and open. The contact driving part is provided with a convex block received in the receiving groove. On the projection plane perpendicular to the central axis where the rotating shaft is located, the size of the receiving groove is larger than that of the convex block, and the central angle corresponding to the size difference between the two is larger than the central angle corresponding to the butting convex part reaching the highest point position of the arc - shaped arched part from the starting position.

[0008] Further, there are two sets of the energy - storage driving assemblies, which are respectively arranged on the opposite sides of the rotating part. Two arc - shaped arched parts are arranged on the driving ring of the rotating part to respectively correspond to the two sets of energy - storage driving assemblies.

[0009] Further, there are two energy - storage springs in the energy - storage driving assembly. The two energy - storage springs are distributed at both ends of the driving block, and the butting convex part is located at the middle position of the bottom of the driving block.

[0010] Further, the butting convex part is of a hemispherical structure.

[0011] Further, the contact part specifically includes a static contact, a moving contact and a jacking spring. The moving contact is arranged to be liftable to achieve contact with or separation from the static contact. The jacking spring applies an upward elastic force to the moving contact. The contact driving part also has a butting boss extending downward. The butting boss has an inclined side surface and a flat bottom surface connected. The top of the moving contact abuts against the butting boss.

[0012] Further, the moving contact includes a lifting slide beam and a plurality of contact bridges fixed on the lifting slide beam. Each contact bridge is provided with a moving contact corresponding to the static contact. The lifting slide beam is arranged to be liftable and slidable. A convex part is formed on the lifting slide beam. The convex part abuts against the butting boss. A partition is formed at the position of the lifting slide beam between two adjacent contact bridges.

[0013] Further, there are two sets of the abutted convex part and the butting boss.

[0014] Further, an installation opening is formed on the side wall of the housing. An insertion opening is formed at the position of the lifting slide beam corresponding to the installation opening.

[0015] Further, it further includes an operating handle, which is located outside the housing and is connected to the rotating shaft of the driving part; a padlock is provided on the operating handle.

[0016] Further, the housing includes a lower housing, a middle cover and an upper housing which are sequentially covered. The upper housing and the middle cover form an upper chamber, the driving part is assembled in the upper chamber, the middle cover and the lower housing form a lower chamber, and the contact part is assembled in the lower chamber.

[0017] Through the technical solution provided by the present invention, the following beneficial effects are achieved:

[0018] The energy storage spring and the driving block of the energy storage driving assembly are vertically distributed up and down. The energy storage and release of the energy storage spring are realized through the cooperation of the arc-shaped arch part and the driving block. The structural design is ingenious, which can well save the layout space (especially the horizontal floor area), making the structure more compact. When applied to high-current (100A) products, the size can also be well reduced; at the same time, the cooperation between the contact driving part and the rotating part can drive the contact driving part to act only when the energy storage spring is released, which can significantly reduce the external force applied during the energy storage stage and is more labor-saving; and it can make the contact part quickly and smoothly open and close, with higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is the external view schematic diagram of the clapper-type disconnecting switch in the embodiment;

[0020] Figure 2 Shown is the partial structure decomposition schematic diagram of the clapper-type disconnecting switch in the embodiment;

[0021] Figure 3 Shown is the structure decomposition schematic diagram of the driving part in the embodiment;

[0022] Figure 4 Shown is the decomposition schematic diagram of the cooperation structure of the contact driving part and the lifting sliding beam in the embodiment;

[0023] Figure 5 Shown is the horizontal cross-sectional view of the driving part in the embodiment;

[0024] Figure 6 Shown is the structural schematic diagram of the rotating part in the embodiment Figure 1 ;

[0025] Figure 7 Shown is the structural schematic diagram of the rotating part in the embodiment Figure 2 ;

[0026] Figure 8 Shown is the structural schematic diagram of the contact driving part in the embodiment Figure 1 ;

[0027] Figure 9 The structural schematic diagram of the contact driving member in the embodiment is shown Figure 2 ;

[0028] Figure 10 The exploded view of the structure of the contact part in the embodiment is shown;

[0029] Figure 11 The exploded view of the mating structure of the middle cover and the lower shell in the embodiment is shown. Specific embodiments

[0030] To further illustrate each embodiment, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0031] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0032] Referring to Figures 1 to 11 As shown, a clapper-type disconnect switch provided in this embodiment includes a housing 10 and a driving part 20 and a contact part 30 arranged in the housing 10. The contact part 30 is located below the driving part 20, that is, it has an up-and-down distribution structure.

[0033] Specifically, the driving part 20 includes a rotating member 22, an energy storage driving assembly 21 and a contact driving member 23. The rotating member 22 has a rotating shaft 221 and a driving ring 222 connected to the rotating shaft 221. The driving ring 222 has an upwardly arched arc-shaped arched portion 223, and this arc-shaped arched portion 223 is a sine wave structure with only one peak and is symmetrical with respect to the center line passing through the vertex. The energy storage driving assembly 21 includes an energy storage spring 212 and a driving block 211. The driving block 211 is located above the driving ring 222 and is provided with an abutting convex portion 213 extending downward to abut against the arc-shaped arched portion 223. The upper end of the energy storage spring 212 abuts against the top wall of the housing 10, and its lower end abuts against the driving block 211. That is, the abutting convex portion 213 of the driving block 211 abuts against the arc-shaped arched portion 223 under the downward elastic force applied by the energy storage spring 212.

[0034] When the contact part 30 of the disconnector is in the open or closed position, the abutting convex part 213 of the driving block 211 abuts against one side of the arc-shaped arched part 223, and this position is defined as the starting position; when the contact part 30 is in the open position, the abutting convex part 213 of the driving block 211 abuts against the left side of the arc-shaped arched part 223, and at this time, the abutting position between the abutting convex part 213 and the arc-shaped arched part 223 is the starting position of opening. When the contact part 30 is in the closed position, the abutting convex part 213 of the driving block 211 abuts against the right side of the arc-shaped arched part 223, and at this time, the abutting position between the abutting convex part 213 and the arc-shaped arched part 223 is the starting position of closing.

[0035] When an external force is applied to the rotating shaft 221 of the rotating member 22, the arc-shaped arched part 223 rotates around the rotating shaft 221. At this time, the top of the arc-shaped arched part 223 slowly approaches the abutting convex part 213 to drive the driving block 211 to move upward, thereby compressing the energy storage spring 212, and the energy storage spring 212 stores energy until the top of the arc-shaped arched part 223 abuts and cooperates with the abutting convex part 213. The above process requires the application of an external force. When the rotating member 22 continues to rotate, the abutting convex part 213 crosses the top of the arc-shaped arched part 223. During this process, the energy storage spring 212 starts to release and applies a downward elastic force to the driving block 211, thereby driving the rotating member 22 to continue to rotate until the energy storage spring 212 is completely released. This process does not require the application of an external force and is completed by relying on the energy storage spring 212.

[0036] An eccentrically arranged receiving groove 224 is formed at the bottom of the rotating member 22, and the contact driving member 23 is rotatably arranged at the bottom of the rotating member 22 to drive the contact part 30 to open and close; the contact driving member 23 is provided with a convex block 231 received in the receiving groove 224; when the rotating member 22 rotates, the side wall of the receiving groove 224 abuts against the convex block 231 to drive the contact driving member 23 to rotate together, thereby realizing the opening and closing operation.

[0037] Specifically, in the projection plane (i.e., the horizontal plane) perpendicular to the central axis where the rotating shaft 221 is located, this state can be referred to as Figure 5 As shown, the size of the receiving groove 224 is larger than that of the convex block 231, and the central angle a corresponding to the size difference between the two is greater than the central angle corresponding to the abutting convex part 213 reaching the highest point position of the arc-shaped arched part 223 from the starting position. Specifically, the center point o is the position where the central axis of the rotating shaft 221 is located. It should be noted that: actually, it is the arc-shaped arched part 223 that rotates. For the sake of convenience of description, between the abutting convex part 213 and the arc-shaped arched part 223, the arc-shaped arched part 223 is used as a static reference object for description.

[0038] Taking the closing operation as an example (the opening operation is the same), the abutting convex portion 213 is at the starting position of closing. When an external force is applied to rotate the rotating member 22, the abutting convex portion 213 reaches the highest point position (i.e., the top position) of the arc-shaped arched portion 223 from the starting position. At this time, the side wall of the receiving groove 224 has not yet abutted against the convex block 231, and the contact driving member 23 remains stationary, that is, no closing driving action is performed. When the abutting convex portion 213 passes over the top of the arc-shaped arched portion 223, the energy storage spring 212 enters the release state and drives the rotating member 22 to continue rotating until it is completely released. During this process, the side wall of the receiving groove 224 abuts against the convex block 231 and drives the contact driving member 23 to rotate together, realizing the closing driving action.

[0039] For the clapper-type disconnecting switch provided in this embodiment, the energy storage spring 212 and the driving block 211 of the energy storage driving assembly 21 are vertically distributed up and down. The energy storage and release of the energy storage spring 212 are realized through the cooperation of the arc-shaped arched portion 223 and the driving block 211. The structural design is ingenious, which can well save the layout space (especially the horizontal floor area), making the structure more compact. When applied to high-current (100A) products, the size can also be well reduced. At the same time, when an external force is applied to compress the energy storage spring 212 through the rotating member 22, based on the intermittent movement cooperation structure between the contact driving member 23 and the rotating member 22, the contact driving member 23 is driven to act only when the energy storage spring 212 is released, which can significantly reduce the external force applied during the energy storage stage and save more operating force. The opening / closing process of the contact belongs to non-manual operation. And it can make the contact part 30 quickly and smoothly open and close, with higher safety.

[0040] Further, in this embodiment, two sets of the energy storage driving assemblies 21 are provided, which are respectively arranged on the opposite sides of the rotating member 22. Two arc-shaped arched portions 223 are provided on the driving ring 222 of the rotating member 22 to respectively correspond to the two sets of energy storage driving assemblies 21. The adoption of the two sets of structures, on the one hand, increases the stability, and on the other hand, also increases the number of energy storage springs 212, improves the driving force for opening and closing, and makes the action more rapid.

[0041] At the same time, on the same set of energy storage driving assembly 21, two energy storage springs 212 of the energy storage driving assembly 21 are provided. The two energy storage springs 212 are distributed at both ends of the driving block 211, and the abutting convex portion 213 is located at the middle position of the bottom of the driving block 211. With such a setting, the two energy storage springs 212 can evenly apply elastic force to the abutting convex portion 213, and the acting force is more uniform.

[0042] Specifically, the abutting convex portion 213 is of a hemispherical structure. With such a setting, the contact friction between the abutting convex portion and the arc-shaped arched portion 223 can be greatly reduced, making the action smoother and more labor-saving.

[0043] The above structure of the energy storage driving component 21 is one of the more preferred solutions. Of course, in other embodiments, the number and arrangement of the energy storage driving components 21, as well as the number and layout of the energy storage springs 212 in the same energy storage driving component 21 and other structures are not limited to this.

[0044] Specifically, it further includes an operating handle 40, and the operating handle 40 is located outside the housing 10 and is connected to the rotating shaft 221 of the driving part 20; so as to facilitate the operation of personnel. A padlock 41 is provided on the operating handle 40. When operations such as maintenance are required, the operating handle 40 can be locked by the padlock 41 to prevent misoperation by personnel. Of course, in other embodiments, the operating handle 40 can also be replaced by other mechanical transmission structures.

[0045] Specifically, in this embodiment, the number of sets of the cooperation between the receiving groove 224 and the convex block 231 also adopts two sets and is rotationally symmetrically arranged. Using two sets, the acting force is more uniform and the movement is smoother. Of course, one set or more than two sets can also be used.

[0046] The contact part 30 specifically includes a static contact 31, a moving contact 32 and a jacking spring 35. The moving contact 32 is arranged to be liftable to achieve contact with or separation from the static contact 31; in this specific embodiment, the static contact 31 is arranged above the moving contact 32, and the moving contact 32 rises to contact the static contact 31 to achieve closing; the moving contact 32 descends to separate from the static contact 31 to achieve opening. The jacking spring 35 applies an upward elastic force to the moving contact 32 to drive the moving contact 32 to close upward. The contact driving member 23 also has a downwardly extending abutting boss 232, and the abutting boss 232 has an inclined side surface 234 and a flat bottom surface 233 connected thereto; the top of the moving contact 32 abuts on the abutting boss 232. In the closed state, the moving contact 32 rises under the action of the jacking spring 35 and abuts on the inclined side surface 234 of the abutting boss 232, and the moving contact 32 contacts the static contact 31; when switching to the open state, the rotation of the contact driving member 23 causes the moving contact 32 to move downward under the drive of the inclined side surface 234 against the elastic force of the jacking spring 35 until it abuts on the flat bottom surface 233 of the abutting boss 232 for fixed abutment, so that the moving contact 32 is separated from the static contact 31 and remains in the open state. When it is necessary to close again, the contact driving member 23 rotates in the reverse direction, so that the moving contact 32 is separated from the flat bottom surface 233 and abuts on the inclined side surface 234 again. This structure is simple and easy to implement. Specifically, the lifting of the moving contact 32 is realized through the guidance of the housing 10.

[0047] With the arrangement of the jacking spring 35, during the opening process, the elastic potential energy released by the energy storage spring 212 should be sufficient to overcome the energy required for the jacking spring 35 to be compressed, so as to drive the moving contact 32 to move downward until it disconnects from the static contact 31; during the closing process, the elastic potential energy released by the energy storage spring 212 and the elastic potential energy released by the jacking spring 35 jointly drive the moving contact 32 to move upward until it contacts the static contact 31, making the closing faster and safer.

[0048] Specifically, in this embodiment, the moving contact 32 includes a lifting sliding beam 33 and a plurality of contact bridges 34 fixed on the lifting sliding beam 33. The lifting sliding beam 33 is arranged to be liftable and slidable. Each contact bridge 34 is provided with a moving contact corresponding to the static contact 31. More specifically, in this embodiment, the disconnecting switch has a three-pole structure, that is, there are three groups of static contacts 31, and there are also three contact bridges 34 on the lifting sliding beam 33, corresponding to the three groups of static contacts 31 respectively; in the closed state, the moving contacts on the contact bridges 34 are in contact with the static contacts of the corresponding static contacts 31.

[0049] A convex portion 331 is formed on the lifting sliding beam 33, and the convex portion 331 abuts against the abutting boss 232; that is, the convex portion 331 serves as the top of the above-mentioned moving contact 32 to abut against the abutting boss 232 of the contact driving member 23. Specifically, the convex portion 331 also has an inclined surface 334 for cooperating with the inclined side surface 234 of the abutting boss 232, with better guiding performance. A partition 332 is formed at the position between two adjacent contact bridges 34 on the lifting sliding beam 33. Since the lifting sliding beam 33 is made of insulating material, the arrangement of the partition 332 can effectively insulate each group of contacts, with better safety performance.

[0050] At the same time, there are two groups of the mutually abutting convex portion 331 and abutting boss 232. With this arrangement, the acting force is more uniform.

[0051] An installation opening is formed on the side wall of the housing 10, and a socket 333 is formed on the lifting sliding beam 33 at the position corresponding to the installation opening. With this arrangement, on the basis of the three-pole structure of the disconnecting switch, other structures can be additionally added through the cooperation of the socket 333. For example, in this embodiment, sockets 33 are provided at both the left and right ends of the lifting sliding beam 33. A modular fourth-pole contact module is provided on the left side wall of the housing 10, and an auxiliary contact module is provided on the right side wall of the housing 10. The moving contact of the fourth-pole contact module and the driving end of the auxiliary contact module are respectively inserted into the left and right sockets 333 of the lifting sliding beam 33. With this arrangement, corresponding modules can be added according to actual needs.

[0052] The above structure of the contact part 30 is one of the more preferred solutions in this embodiment; of course, in other embodiments, the structure of the contact part 30 is not limited to this.

[0053] Further preferably, in this embodiment, the housing 10 includes a lower housing 13, a middle cover 12 and an upper housing 11 that are sequentially covered. The upper housing 11 and the middle cover 12 form an upper chamber, the driving part 20 is assembled in the upper chamber, the middle cover 12 and the lower housing 13 form a lower chamber, and the contact part 30 is assembled in the lower chamber. The driving part 20 and the contact part 30 are separated, and the ablation products generated when the contact part 30 turns on and off the load, as well as the electric arc generated when turning on and off the load, will not be brought into the driving part 20. The transmission structure of the driving part 20 always maintains a high cleanliness, ensuring the high reliability of the rotational movement of the driving part 20.

[0054] At the same time, the cover disconnect switch is assembled from bottom to top during the assembly process, that is, the contact part 30 is first assembled in the lower housing 13, then the middle cover 12 is covered, then the driving part 20 is sequentially installed, and finally the upper housing 11 is covered. However, since the contact part 30 is provided with a jacking spring 35, during the assembly process, due to the elastic force of the jacking spring 35, other components will be bounced up and cannot be effectively positioned, resulting in a high assembly difficulty and slow efficiency. For this reason, in this embodiment, an elastic clamping joint 131 protrudes upward from the top of the lower housing 13, a positioning port 121 corresponding to the elastic clamping joint 131 is provided on the middle cover 12, the height of the elastic clamping joint 131 is greater than the height of the positioning port 121, and the upper housing 11 is fixed to the lower housing 13 and clamps and fixes the middle cover 12. When installing the middle cover 12, the positioning port 121 is aligned with the elastic clamping joint 131 and inserted. In the horizontal direction, the middle cover 12 is positioned by the elastic clamping joint 131, effectively preventing the middle cover 12 and the contact part 30 below from having a horizontal position offset; before the upper housing 11 is covered, the middle cover 12 will be jacked up by the jacking spring 35 of the contact part 30, but in the vertical direction, the elastic clamping joint 131 will also effectively limit the middle cover 12; so as to facilitate the adjustment of the assembly structure and the subsequent stable installation of the driving part 20; such as facilitating the position adjustment of the contact part 30 below. After that, when the upper housing 11 is covered, the covering of the upper housing 11 will press the middle cover 12 in place, and after the upper housing 11 and the lower housing 13 are fixed, the middle cover 12 is clamped and fixed, realizing a one-time fixed installation. In this way, the assembly accuracy and assembly efficiency are effectively improved.

[0055] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all are within the protection scope of the present invention.

Claims

1. A clapper - type disconnecting switch, comprising a housing and a driving part and a contact part arranged in the housing, characterized in that: The contact part is located below the driving part. The driving part includes a rotating member, an energy - storage driving assembly and a contact driving member. The rotating member has a rotating shaft and a driving ring connected to the rotating shaft. The driving ring has an upward - arched arc - arched part. The energy - storage driving assembly includes an energy - storage spring and a driving block. The driving block is located above the driving ring and is provided with a contact convex part extending downward to abut against the arc - arched part. The upper end of the energy - storage spring abuts against the top wall of the housing, and its lower end abuts against the driving block; An eccentrically - arranged receiving groove is formed at the bottom of the rotating member. The contact driving member is rotatably arranged at the bottom of the rotating member to drive the contact part to open and close; the contact driving member is provided with a convex block received in the receiving groove; on the projection plane perpendicular to the central axis where the rotating shaft is located, the size of the receiving groove is larger than that of the convex block, and the central angle corresponding to the size difference between the two is larger than the central angle corresponding to the contact convex part moving from the starting position to the highest point position of the arc - arched part.

2. The clapper-type disconnector according to claim 1, wherein: Two groups of the energy - storage driving assemblies are provided and are respectively arranged on opposite sides of the rotating member. Two arc - arched parts are arranged on the driving ring of the rotating member to respectively correspond to the two groups of energy - storage driving assemblies.

3. The clapper-type disconnector according to claim 1 or 2, characterized in that: Two energy - storage springs of the energy - storage driving assembly are provided. The two energy - storage springs are distributed at both ends of the driving block, and the contact convex part is located at the middle position of the bottom of the driving block.

4. The make-and-break disconnecting switch according to claim 1 or 2, characterized in that: The contact convex part is of a hemispherical structure.

5. The make-and-break disconnector according to claim 1, characterized in that: The contact part includes a static contact, a moving contact and a jacking spring. The moving contact is arranged to be able to move up and down to achieve contact with or separation from the static contact; the jacking spring applies an upward elastic force to the moving contact. The contact driving member also has a contact convex platform extending downward. The contact convex platform has an inclined side surface and a flat bottom surface connected; the top of the moving contact abuts against the contact convex platform.

6. The clapper-type disconnector according to claim 5, characterized in that: The moving contact includes a lifting sliding beam and a plurality of contact bridges fixed on the lifting sliding beam. Each contact bridge is provided with a moving contact corresponding to the static contact. The lifting sliding beam is arranged to be able to slide up and down. A convex part is formed on the lifting sliding beam. The convex part abuts against the contact convex platform; a partition is formed at the position of the lifting sliding beam between two adjacent contact bridges.

7. The make-and-break disconnector according to claim 5, characterized in that: There are two groups of the mutually - abutting convex part and the contact convex platform.

8. The clapper-type disconnector according to claim 6, wherein: An installation opening is formed on the side wall of the housing. The lifting sliding beam forms a socket at the position corresponding to the installation opening.

9. The make-and-break disconnector according to claim 1, wherein: It further includes an operating handle. The operating handle is located outside the housing and is connected to the rotating shaft of the driving part; a padlock is arranged on the operating handle.

10. The clapper-type disconnector according to claim 1, wherein: The housing includes a lower housing, a middle cover and an upper housing which are sequentially covered. The upper housing and the middle cover form an upper chamber. The driving part is assembled in the upper chamber. The middle cover and the lower housing form a lower chamber. The contact part is assembled in the lower chamber.

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