CN219842922U - Moving contact assembly, contact unit and isolating switch - Google Patents

Abstract

The movable contact assembly comprises a contact support, wherein the contact support is provided with a pair of movable contact parts, one end of the contact support is provided with a convex swing supporting part, and the section of the swing supporting part is formed by encircling odd-numbered equal-width curves on the same plane; the contact unit comprises a shell, wherein a contact mechanism is arranged in the shell and comprises a pair of fixed contact assemblies, the moving contact assembly is applied between the pair of fixed contact assemblies, the moving contact assembly is positioned between the pair of fixed contact assemblies, and a swinging supporting groove matched with the swinging supporting part is arranged in the shell; the isolating switch is provided with at least one contact unit, wherein one contact unit is applied to the movable contact assembly. According to the swinging support part of the movable contact assembly, the section of the swinging support part is formed by encircling odd-number equal-width curves on the same plane, so that the moving track of the swinging support part is longer, the movable contact assembly can obtain larger linear speed, and the moving speed of the movable contact assembly is improved.

Description

Moving contact assembly, contact unit and isolating switch

Technical Field

The utility model relates to the field of switching appliances, in particular to a moving contact assembly, a contact unit and an isolating switch.

Background

With the rapid development of the ac/dc electrical appliance industry, especially in the photovoltaic system, the rotary isolating switch is widely used. The isolating switch is a switch device with isolating function and switching function, and the moving contact assembly in the contact unit is driven by the operating mechanism, but in the traditional rotary isolating switch, due to the structure limited by products, when the switch is opened and closed by manual operation, the moving contact assembly and the operating mechanism coaxially rotate, and the structure ensures that the rotating speed of the moving contact assembly reaches a bottleneck state under the same power reserve of the isolating switch, so that the speed of the moving contact assembly cannot be improved, and the performance of the isolating switch is not beneficial to be optimized.

Disclosure of Invention

The utility model aims to overcome at least one defect in the prior art and provides a moving contact assembly, a contact unit and an isolating switch which are simple in structure, high in reliability and high in moving speed.

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

the utility model provides a moving contact assembly which comprises a contact support, wherein the contact support is provided with a pair of moving contact parts, one end of the contact support is provided with a convex swing support part, and the section of the swing support part is formed by encircling odd-numbered equal-width curves on the same plane.

Preferably, the swing support portion has a cross-sectional shape of a lyocell triangle.

Preferably, the contact support is provided with at least two plug-in parts, and all the plug-in parts form a rotationally symmetrical structure about the axis of the contact support.

Preferably, the plugging part and the swinging support part are positioned at two opposite sides of the contact support, and all the plugging parts correspond to the outer sides of the swinging support part.

Preferably, the plugging portion is disposed on the swing supporting portion.

Preferably, the contact support is provided with a contact groove, a pair of movable contact parts are arranged in the contact groove, and the pair of movable contact parts are respectively arranged along the same diameter of the contact support.

Preferably, the contact support comprises a first support piece and a second support piece which are opposite at intervals, two plug-in connection parts are arranged at one end of the first support piece, which faces the second support piece, of the first support piece, a rotation symmetrical structure is formed by the two plug-in connection parts relative to the axis of the first support piece, a swing support part is arranged at one end of the first support piece, which faces away from the second support piece, of the first support piece, and a through hole corresponding to the two plug-in connection parts is formed in the second support piece.

Preferably, a gap serving as a contact groove is formed between the edge of the first support piece and the edge of the second support piece, a movable contact bridge is arranged between the first support piece and the second support piece, and the movable contact bridge is radially arranged between the two plug-in connection parts, so that two ends of the movable contact bridge respectively serve as movable contact parts and extend into the contact groove.

Preferably, the first support piece and the second support piece are respectively provided with a radial groove, the two radial grooves are in butt joint to form an assembly groove for assembling the movable contact bridge, and a foolproof structure is arranged between the assembly groove and the movable contact bridge.

The utility model also provides a contact unit which comprises a shell, wherein a contact mechanism is arranged in the shell and comprises a pair of fixed contact assemblies, the contact mechanism further comprises the moving contact assembly, the moving contact assembly is positioned between the pair of fixed contact assemblies, and a swinging support groove matched with the swinging support part is formed in the shell.

The utility model also provides an isolating switch comprising an operating module and a contact module driven by the operating module, wherein the contact module comprises a layer of contact units as claimed in claim, and the swinging support part faces away from the operating module or faces towards the operating module.

The utility model also provides an isolating switch, which comprises an operation module and a contact module driven by the operation module, wherein the contact module comprises at least two contact units which are arranged in a stacked manner, the two adjacent contact units are connected in a linkage manner, the contact unit is used as the contact unit farthest from the operation module, and the swinging support part faces away from the operation module; alternatively, the contact unit as described above is the one closest to the operation module, and the swing support faces the operation module.

According to the movable contact assembly, the contact unit and the isolating switch, the swinging support part arranged on the contact support is formed by encircling odd-numbered equal-width curves on the same plane in a cross section, when the same power output driving contact supports to rotate by the same angle, compared with the moving track of the support part supported by the conventional contact, the moving track of the swinging support part is longer, so that the movable contact assembly can obtain larger linear speed, and the moving speed of the movable contact assembly is improved.

In addition, the swing supporting part is of a Lailo triangle in cross section, and has the advantages of being simple in processing and high in matching degree.

In addition, the contact support is provided with at least two grafting portions, and when two adjacent contact supports the linkage, has simplified the dismouting process, and especially all grafting portions correspond to the outside of swing supporting part, make things convenient for the contact support to support linkage cooperation and cooperation stability with the contact of operation module or adjacent contact unit.

In addition, the first support piece and the second support piece supported by the contact are spliced through the linkage part, and the split type contact support has the advantages of simple structure and convenience in disassembly and assembly.

Drawings

FIG. 1 is a schematic diagram of an isolating switch according to the present utility model;

FIG. 2 is a schematic view of the structure of the contact unit in the present utility model;

FIG. 3 is a schematic view of the structure of the movable contact assembly (applied to the contact unit furthest from the operation module) in the present utility model;

FIG. 4 is a schematic view of the structure of the movable contact assembly (applied to the side of the contact unit furthest from the operation module and facing the bottom base);

fig. 5 is a schematic view of the structure of the first support (applied to the contact unit furthest from the handling module) in the present utility model;

FIG. 6 is an exploded view of the moving contact assembly of the present utility model (applied to the contact unit furthest from the operating module);

FIG. 7 is a schematic view of the structure of the underlying base of the present utility model;

reference numerals:

1a 1-top-layer base, 1b 1-middle base, 1c 1-bottom-layer base, 101-swing limit groove, 12-contact support, 120-step surface, 121-swing support part, 124-plug-in part, 126-installation notch, 127-contact groove, 1281-buckle, 1282-clamping groove, 129-through hole, 12 a-first support piece, 12 b-second support piece, 13-movable contact bridge, 14-static contact component and 2-operation module.

Detailed Description

Specific embodiments of the moving contact assembly, the contact unit and the disconnector according to the utility model are further described below with reference to the examples given in the accompanying drawings. The moving contact assembly, the contact unit, and the isolating switch of the present utility model are not limited to the description of the following embodiments.

As shown in fig. 1, the isolating switch comprises an operation module 2 and a contact module which are arranged in a stacked manner, the contact module comprises at least one contact unit, wherein the opening and closing action of the at least one contact unit is directly or indirectly driven by the operation module 2, when the contact module comprises more than one contact unit, one contact unit closest to the operation module 2 is directly or indirectly driven by the operation module 2, and the rest contact units are connected in a linkage manner to realize synchronous action, and of course, all the contact units are directly driven by an operation mechanism or other driving components.

As shown in fig. 2, each contact unit includes a housing, and a contact mechanism and a wiring assembly (not shown) disposed in the housing, the contact mechanism including a movable contact assembly and a pair of fixed contact assemblies 14 (only one fixed contact assembly 14 of the pair of fixed contact assemblies 14 is shown in fig. 2), wherein the fixed contact assembly 14 is connected to the wiring assembly, the movable contact assembly rotates between the pair of fixed contact assemblies 14 for switching on or off a main line in each contact unit, and in particular, the movable contact assembly includes a contact support 12 and a pair of movable contact portions disposed in the contact support 12, the contact support 12 is rotatably disposed between the pair of fixed contact assemblies 14, and each movable contact portion is respectively contacted with or separated from one fixed contact assembly 14 as the contact support 12 is driven to rotate; the adjacent two contact units are connected in a linkage way through the contact support 12, so that synchronous switching-on and switching-off of contact mechanisms in all the contact units are realized.

The utility model is improved in that the movable contact assembly comprises a contact support 12, a swinging support part 121 for supporting the rotation of the movable contact assembly 11 is convexly arranged at the center of the contact support 12, and the section of the swinging support part 121 is formed by encircling odd-numbered equal-width curves on the same plane. When the contact support 12 is driven to rotate by the same angle by the same power output, compared with the moving track of the supporting part of the conventional contact support 12, the moving track of the swinging supporting part 121 for supporting the rotation of the moving contact assembly 11 is longer, so that the moving contact assembly can obtain a larger linear speed, and the moving speed of the moving contact assembly is improved.

Preferably, the swing support portion 121 has a cross-sectional shape of a leo triangle, and has the advantage of simple processing and high degree of engagement. Of course, the cross-sectional shape of the swing supporting portion 121 may be formed by surrounding five, seven or more curves with equal width on the same plane, but the difficulty of the process may be increased. It should be noted that, a graph is placed between two parallel lines so as to be tangent to the two parallel lines, no matter how the graph moves, the graph is always tangent to the two parallel lines as long as the graph is still in the two parallel lines, and the curve is an equal-width curve, and the distance between the two parallel lines is called the width of the equal-width curve; the Lai Lo triangle is a curved triangle which takes the top point of the regular triangle as the center of a circle, takes the side length of the regular triangle as the radius, and consists of three sections of arcs, wherein three curved edges of the Lai Lo triangle are three equal-width curves, correspondingly, the top point of the regular pentagon is taken as the center of a circle, the diagonal of the regular pentagon is taken as the radius, the curved edge pentagon consisting of five sections of arcs is taken as the radius, and at the moment, the five curved edges of the curved edge pentagon are five equal-width curves, and other curves are not repeated.

Preferably, the contact support 12 is provided with at least two plugging portions 124 serving as linkage portions, and all the plugging portions 124 form a rotationally symmetrical structure about the axis of the contact support 12, so that the contact support 12 is conveniently matched with the adjacent contact support 12 in a plugging manner, the assembly process is simplified, further, when the plugging portions 124 and the swinging support portions 121 are respectively positioned at two sides of the contact support 12, all the plugging portions 124 correspond to the outer sides of the swinging support portions 121, and the contact support 12 is conveniently matched with the contact support 12 of the operation module 2 or an adjacent contact unit in a linkage manner and is matched with stability. Of course, when the linking portion and the swinging support portion 121 are located on the same side of the contact support 12 and the plugging portion 124 is used as the linking portion, the plugging portion 124 needs to pass through the swinging limiting groove 101, and of course, the linking portion may be a slot 125 formed in the swinging support portion 121.

An embodiment of a disconnecting switch is provided in connection with fig. 1-7, in which the disconnecting switch comprises an operation module 2, a transmission module and a contact module which are arranged in a stacked manner, wherein the operation module 2 drives the contact module through the transmission module, and the driving mode can adopt the prior art.

In this embodiment, the contact module includes three contact units stacked in sequence, where the contact unit closest to the operation module 2 is driven by the operation mechanism, and the contact unit in the middle position is connected with two adjacent contact units in a linkage manner, so that the contact unit farthest from the operation module 2 is driven under the linkage effect.

As shown in fig. 2, each contact unit includes a housing, a pair of wire connecting assemblies and a contact mechanism, wherein the housing includes a connecting wall and two pairs of side walls, each pair of side walls is opposite in interval and each side wall is vertically connected to the connecting wall, the side walls of all the housings are correspondingly connected, the connecting walls of two adjacent housings are opposite in interval, a pair of wire connecting assemblies are respectively arranged at two opposite sides of each housing, a wire connecting hole corresponding to the wire connecting assembly is formed in the side wall of the housing, the contact mechanism is arranged between the pair of wire connecting assemblies, the contact mechanism includes a movable contact assembly and a pair of fixed contact assemblies 14, the movable contact assemblies are rotationally assembled in the middle of the housing, the pair of fixed contact assemblies 14 are respectively arranged at two opposite sides of the movable contact assemblies, the pair of fixed contact assemblies 14 respectively form a rotationally symmetrical structure with respect to the center of the movable contact assemblies, and each fixed contact assembly 14 is correspondingly connected with one wire connecting assembly.

As shown in fig. 2-6, the moving contact assembly includes a contact support 12, where the contact support 12 is provided with a contact slot 127, preferably the contact slot 127 is provided along a circumferential side wall of the contact support 12, a static contact portion of each static contact assembly 14 may correspondingly extend into the contact slot 127, a pair of moving contact portions are assembled in the contact slot 127, the pair of moving contact portions form a rotationally symmetrical structure about an axis of the contact support 12, preferably, when the contact support 12 is opened, a connection line between the pair of moving contact portions is perpendicular to a connection line between the pair of static contact assemblies 14, and after the contact support 12 is driven to rotate by 80-100 °, each moving contact portion is correspondingly matched with one static contact portion, so as to realize closing of the contact mechanism; the movable contact assemblies of two adjacent contact units are connected in linkage through a contact support 12.

In this embodiment, each housing is a base structure with an open single side, after the assembly is completed, two adjacent bases are stacked to form a closed structure, and of course, each housing may also be a completely closed structure, which may increase the overall volume and cost of the contact unit, in fig. 1 and 7, the contact mechanisms and wiring assemblies of the other two contact units are assembled in one middle base 1b1 except the contact unit farthest from the operation module 2, and the top base 1a1 is covered on the middle base 1b1 closest to the operation mechanism.

In connection with fig. 1, 3-6 a moving contact assembly is provided which is adapted to the contact unit furthest away from the operating module 2.

The movable contact assembly comprises a contact support 12 and a movable contact bridge 13, the movable contact bridge 13 is arranged along the radial direction of the contact support 12, and two ends of the movable contact bridge 13 respectively serve as a movable contact part to extend into a contact groove 127 of the contact support 12; the end of the contact support 12 facing the operation module 2 is provided with a linkage part, the linkage part is used for being in linkage connection with the contact support 12 of the adjacent contact unit, the center position of the contact support 12 facing the bottom base 1c1 is convexly provided with a swinging support part 121, wherein the section of the swinging support part 121 is formed by encircling an odd number of equal-width curves on the same plane, at this time, when the contact support 12 is driven to rotate, the swinging support part 121 can move in a swinging limit groove 101 arranged in the bottom base 1c1, for example, the swinging limit groove 101 can be arranged on a bracket structure arranged in the bottom base 1c1, or can be directly arranged on the bottom wall (the connecting wall of the bottom base 1c 1) of the bottom base 1c 1.

In this embodiment, the cross-sectional shape of the swing supporting portion 121 is a lyocell triangle, the swing limiting groove 101 is directly opened on the bottom wall of the bottom base 1c1 (see fig. 7), wherein the cross-sectional shape of the swing limiting groove 101 is a square, the cross-section of the swing limiting groove 101 is a cross-section perpendicular to the swing limiting groove 101, the cross-sectional shape is similar to the square, the corners are arc angles, but the side length relationship satisfies the square, wherein the side length of the square is equal to the width of the curve with equal width, the swing supporting portion 121 is tightly matched with the swing limiting groove 101 while ensuring that the contact support 12 obtains a larger linear velocity, and the matching degree of the swing limiting groove 101 and the swing supporting portion 121 is improved. Of course, the cross-sectional shape of the swing limiting groove 101 may be approximately rectangular, and in this case, the short side length of the rectangle is equal to the width of the curve with equal width, and the corners of the rectangle are also arc angles, but the length of the long side is only slightly larger than the length of the short side.

As shown in fig. 2-4 and 6, the movable contact assembly comprises a contact support 12 and a movable contact bridge 13, wherein a contact groove 127 is formed in the circumferential side wall of the contact support 12, the movable contact bridge 13 is arranged along the radial direction of the contact support 12, and two ends of the movable contact bridge 13 respectively serve as a movable contact part to extend into the contact groove 127 of the contact support 12; the contact support 12 is provided with the linkage portion towards one end of the operation module 2, the linkage portion is used for being connected with the contact support 12 of adjacent contact units in a linkage mode, the contact support 12 is provided with the swing support portion 121 in a protruding mode towards the center position of the bottom base 1c1, the outline of the rolling surface of the swing support portion 121 is an equal-width curve, when the contact support 12 is driven to rotate, the rolling surface of the swing support portion 121 rolls along the groove side wall of the swing limit groove 101, in the embodiment, the cross section of the swing support portion 121 is in a Lailong triangle shape, the cross section side length of the swing limit groove 101 is equal to the width of the equal-width curve, the swing support portion 121 is tightly matched with the swing limit groove 101 while the contact support 12 is guaranteed to obtain a large linear speed, and the matching degree of the swing limit groove 101 and the swing support portion 121 is improved.

Briefly, the cross-sectional shape of the swing support portion 121 is a leo triangle, and the cross-sectional shape of the swing limiting groove 101 is a square.

When the cross-section side length of the swing limit groove 101 is equal to the width of the curve with the same width, three ends of the Lailo triangle are respectively contacted with three groove side walls of the swing limit groove 101, when the contact support 12 is driven to rotate for one circle, the end of the Lailo triangle rotates for one circle along the groove side walls of the swing limit groove 101, the swing track is a square similar to the cross-section shape of the swing limit groove 101, the swing support part 121 with a circular cross-section rotates for one circle in the swing limit groove 101, the movement track is a circle inscribed in the swing limit groove 101, and therefore, when the driving force is fixed and the rotation angle is fixed, the linear speed of the movement track length is larger, and therefore, the swing support part 121 with the cross-section shape of the Lailo triangle can obtain larger linear speed, and the movement speed of the moving contact assembly is improved. When the cross section of the swing limiting groove 101 is rectangular, the length of the short side of the rectangle is the same as the width of the curve with equal width, and at this time, the moving track of the swing supporting portion 121 is longer, and the linear speed of the contact support 12 is higher, but the mating stability of the moving contact mechanism may be affected.

In addition, the contact support 12 of the present embodiment may be of a unitary structure or a split structure, and the split contact support 12 is preferred in the present embodiment.

As shown in fig. 3-6, the contact support 12 includes a first support member 12a and a second support member 12b opposite to each other at intervals, the first support member 12a and the second support member 12b are disc-shaped with the same diameter, two plugging portions 124 are disposed at one end of the first support member 12a facing the second support member 12b, and the two plugging portions 124 form a rotationally symmetrical structure with respect to the axis of the first support member 12a, one end of the first support member 12a opposite to the second support member 12b protrudes to form a step surface 120, the step surface 120 is limited in a circular groove to increase the contact surface between the bottom base 1c1 and the first support member 12a, the central position of the first support member 12a opposite to the second support member 12b (i.e. the central position of the step surface 120) protrudes to be provided with a swinging support portion 121, the cross-section of the swinging support portion 121 is a lyo triangle, the second support member 12b is provided with a through hole 129 corresponding to the two plugging portions 124, the first support member 12a and the second support member 12b in a plugging fit with the second support member 12b also has the advantage of being convenient to mount and dismount, and mount the contact can also be used as a contact for connecting support member 124 corresponding to the through hole 124 when the adjacent to the two support portions are located on the adjacent to the two support portions 12b, and the adjacent to be connected to the linkage portion, and the contact portion 124 can be located on the side when the adjacent to the linkage portion is located on the side and the side on the side of the support portion is opposite to the side and the side 124.

When the first support member 12a and the second support member 12b are in plug-in fit, a gap formed between the edge of the first support member 12a and the edge of the second support member 12b is used as a contact groove 127, the movable contact bridge 13 is limited and arranged between the two plug-in connection parts 124 in the radial direction, so that two ends of the movable contact bridge 13 respectively extend into the contact groove 127 as movable contact parts, further, a radial groove is formed in each of the first support member 12a and the second support member 12b, the two radial grooves are in butt joint to form an assembly groove, and the assembly groove is correspondingly positioned between the two plug-in connection parts 124 and is used for limiting and assembling the movable contact bridge 13.

Preferably, a clamping structure is further disposed between the first support 12a and the second support 12b, the clamping structure includes a buckle 1281 and a clamping groove 1282 that are matched with each other, in this embodiment, the buckle 1281 is disposed on one side of the second support 12b facing the first support 12a in a protruding manner, and the clamping groove 1282 is disposed on the first support 12a, so that the assembly stability of the first support 12a and the second support 12b is further enhanced, and meanwhile, the assembly stability of the second support 12b is also convenient.

Of course, when the contact support 12 is of an integral structure, the contact groove 127 is formed along the circumferential side wall of the contact support 12, the swing support portion 121 is convexly disposed at the center of one end of the contact support 12, at least two plugging portions 124 are disposed at the other end of the contact support 12 opposite to the swing support portion 121, the movable contact bridge 13 is disposed in the contact support 12, and two ends of the movable contact bridge 13 respectively extend into the contact groove 127 as movable contact portions.

In addition, a pair of mounting notches 126 are further formed on the edge of the contact support 12, each mounting notch 126 is respectively communicated with the contact groove 127, and each static contact assembly 14 correspondingly rotates into the contact groove 127 from the mounting notch 126, so that the movable contact assembly can be conveniently assembled in the bottom base 1c1 integrally.

Similarly, the other two contact units can also adopt a moving contact assembly assembled on the bottom base 1c1, but the contact support 12 is not provided with a swinging support part 121, but a slot matched with the linkage part is required to be arranged, so that the linkage part passes through a central slot arranged on the bottom wall of the middle base 1b1 and is inserted into the slot, and the linkage connection of the two adjacent contact supports 12 is realized.

In this embodiment, the isolating switch includes an operation module 2, a transmission module and a contact module that are sequentially stacked, where the structure of the operation module 2 and the transmission module is the same as the first embodiment, and the contact module includes a module housing and three contact units, where the module housing is formed by splicing a top base 1a1, two middle bases 1b1 and a bottom base 1c1, and the top contact unit is the same as the first embodiment and the second embodiment.

The bottom contact unit is similar to the first embodiment, in which the center position of the bottom base 1c1 is not provided with the swing limit groove 101, only the center groove 102 with one groove structure is provided, the center position of the middle base 1b1 covered on the bottom base 1c1 is provided with the swing limit groove 101, correspondingly, the contact support 12 is provided with the swing support portion 121 matched with the swing limit groove 101, at this time, the side of the swing support portion 121 facing away from the bottom base 1c1, and the contact support 12 facing the bottom base 1c1 may be provided with the rotation support portion 122.

When the contact support 12 is in a split structure, that is, the first support member 12a is provided with the rotation support portion 122 on a side facing the bottom base 1c1, and the second support member 12b is provided with the swing support portion 121 on a side facing away from the bottom base 1c1, meanwhile, the inserting portion 124 is disposed on the swing support portion 121 and can pass through the swing limiting groove 101, and accordingly, the single size of the inserting portion 124 and the slot 125 is reduced, and the space between two adjacent inserting portions 124 or slots 125 is reduced.

Another embodiment of a disconnector is provided, comprising an operating module 2, a transmission module and a contact module arranged in a stack, wherein the contact module comprises at least one contact unit.

When the contact module includes a contact unit, the contact unit has the same structure as the contact unit furthest from the operation module 2 in the first embodiment, where the swing supporting portion 121 is located at an end opposite to the operation module 2, and the corresponding swing limiting groove 101 is located on the housing furthest from the operation module 2, and of course, the contact unit may also be a bracket structure disposed in the housing of the module, but the bracket structure needs to be far from the operation module 2; when the contact unit adopts the contact unit structure farthest from the operation module 2 in the second embodiment, the swing support portion 121 faces the operation module 2, and the linking portion provided to the contact support 12 may be omitted.

When the contact module includes two or more contact units, one contact unit thereof adjacent to the operation module 2 may employ the moving contact assembly structure in the first embodiment or the second embodiment, but slightly different.

When the moving contact assembly of the first embodiment is adopted, the assembly direction of the moving contact assembly is upside down, that is, the swing limit groove 101 is formed in the center position of the top base 1a1, and at this time, the swing support portion 121 of the contact support 12 faces the operation module 2 and is matched with the swing limit groove 101; when the moving contact assembly of the second embodiment is adopted, the assembly direction of the moving contact assembly also needs to be upside down, that is, the center position of the middle base 1b1 adjacent to the top base 1a1 is not provided with the central groove 103, but provided with the swing limiting groove 101, at this time, the swing supporting portion 121 faces away from the operation module, and at the same time, the linkage portion located on the same side as the swing supporting portion 121 can pass through the swing limiting groove 101 to be in linkage fit with the contact support 12 of the adjacent contact unit.

Unlike the above-described embodiment, the contact unit of the present embodiment is driven by the operation module 2 through the transmission module in a manner that can be adopted in the prior art.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (11)

1. Moving contact assembly, including contact support (12), contact support (12) are provided with a pair of moving contact portion, its characterized in that: one end of the contact support (12) is provided with a convex swing support part (121), and the section of the swing support part (121) is formed by encircling odd-numbered equal-width curves on the same plane.

2. The moving contact assembly of claim 1, wherein: the cross-sectional shape of the swing support part (121) is a Lailo triangle.

3. The moving contact assembly of claim 1, wherein: the contact support (12) is provided with at least two plug-in parts (124), and all the plug-in parts (124) form a rotationally symmetrical structure about the axis of the contact support (12).

4. A moving contact assembly according to claim 3, wherein: the plug-in part (124) and the swing supporting part (121) are positioned on two opposite sides of the contact support (12); all the insertion parts (124) correspond to the outer sides of the swing support parts (121).

5. A moving contact assembly according to claim 3, wherein: the insertion portion (124) is provided on the swing support portion (121).

6. The moving contact assembly according to any one of claims 1-5, wherein: the contact support (12) is provided with a contact groove (127), a pair of movable contact parts are arranged in the contact groove (127), and the pair of movable contact parts are respectively arranged along the same diameter of the contact support (12).

7. The movable contact assembly of claim 6, wherein: the contact support (12) comprises a first support piece (12 a) and a second support piece (12 b) which are opposite in interval, two plug-in connection parts (124) are arranged at one end of the first support piece (12 a) facing the second support piece (12 b), the two plug-in connection parts (124) form a rotationally symmetrical structure relative to the axis of the first support piece (12 a), a swing support part (121) is arranged at one end of the first support piece (12 a) opposite to the second support piece (12 b), and a through hole (129) which is correspondingly plugged with the two plug-in connection parts (124) is arranged at the second support piece (12 b).

8. The movable contact assembly of claim 7, wherein: a gap serving as a contact groove (127) is formed between the edge of the first support piece (12 a) and the edge of the second support piece (12 b), a movable contact bridge (13) is arranged between the first support piece (12 a) and the second support piece (12 b), the movable contact bridge (13) is radially arranged between the two plug-in parts (124), and two ends of the movable contact bridge (13) extend into the contact groove (127) as movable contact parts respectively.

9. The movable contact assembly of claim 8, wherein: the first support piece (12 a) and the second support piece (12 b) are respectively provided with a radial groove, the two radial grooves are in butt joint to form an assembly groove for assembling the movable contact bridge (13), and a foolproof structure is arranged between the assembly groove and the movable contact bridge (13).

10. Contact unit, including the casing be provided with contact mechanism in the casing, contact mechanism includes a pair of stationary contact subassembly (14), its characterized in that: the contact mechanism further comprises a movable contact assembly according to any one of claims 1-9, wherein the movable contact assembly is positioned between a pair of fixed contact assemblies (14), and a swing support groove (101) for being matched with the swing support part (121) is arranged in the shell.

11. Disconnecting switch, including operation module (2), by operation module (2) driven contact module, its characterized in that: the contact module comprises a layer of contact units according to claim 10, the swing support (121) facing away from the operating module (2), or the swing support (121) facing the operating module (2).