CN214411029U

CN214411029U - Moving contact and rotary switch contact system

Info

Publication number: CN214411029U
Application number: CN202120680234.0U
Authority: CN
Inventors: 苏琴
Original assignee: Shanghai Bayu Technology Co ltd
Current assignee: Shanghai Bayu Technology Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-10-15
Anticipated expiration: 2031-04-02

Abstract

The utility model discloses a moving contact and rotation type switch contact system, the moving contact includes: the moving contact body and the two clapboards are arranged between the first insulating plate and the second insulating plate, the two clapboards are respectively arranged on two sides of the two fins, and insulation spaces are respectively formed between the clapboards and the first insulating plate and between the clapboards and the second insulating plate; the moving contact body and the insulating component can rotate simultaneously until the two fins are clamped by the two fixed contacts respectively to realize connection; the moving contact body and the insulating component can rotate simultaneously until the two fins are separated from the two fixed contacts respectively, so that disconnection is realized. The utility model discloses a moving contact passes through and forms annular insulation space between baffle and first insulation board and the second insulation board respectively, is favorable to promoting electrical insulation, and the switching-on and switching-off performance of switch is guaranteed in going out of electric arc when also being favorable to the disconnection.

Description

Moving contact and rotary switch contact system

Technical Field

The utility model relates to a rotary switch technical field, in particular to moving contact and rotary switch contact system.

Background

Documents CN102037532A, "rotary electrical switch", CN205959863U "contact module and isolating switch for rotary isolating switch", and CN207441492U "moving contact insulating sheet of rotary electrical switch" all disclose the existing contact system structure of rotary isolating switch, which all adopt a double-sheet moving contact and single-sheet static contact structure, and utilize a central shaft to link and drive a moving contact device, and the connection and disconnection of the moving contact and the static contact are realized to realize the connection and disconnection of the isolating switch. It has the following problems: the moving contact structure of biplate is complicated, and production need contain riveting or welding etc. very inconvenient to the conducting part exposes, can lead to electrical insulation poor, is unfavorable for improving switching performance. Therefore, a new movable contact is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a moving contact that simple structure, electrical insulation are good, contact performance is superior.

In order to solve the above problem, the utility model provides a moving contact, it includes:

the moving contact comprises a moving contact body and an insulating assembly, wherein two fins are arranged on the moving contact body, the insulating assembly comprises a first insulating plate, a second insulating plate and two partition plates, the moving contact body and the two partition plates are arranged between the first insulating plate and the second insulating plate, the two partition plates are respectively arranged on two sides of the two fins, and insulating spaces are respectively formed between the partition plates and the first insulating plate and between the partition plates and the second insulating plate;

the moving contact body and the insulating component can rotate simultaneously until the two fins are clamped by the two fixed contacts respectively to realize connection; the moving contact body and the insulating component can rotate simultaneously until the two fins are separated from the two fixed contacts respectively, so that disconnection is realized.

As a further improvement, all be equipped with location axle and connecting hole on first insulation board and the second insulation board, location axle on the first insulation board is pegged graft with the connecting hole on the second insulation board and is cooperated, location axle on the second insulation board is pegged graft with the connecting hole on the first insulation board and is cooperated.

As a further improvement, the moving contact body is provided with a first positioning hole matched with the positioning shaft in a splicing manner.

As a further improvement, two baffles are fan-shaped, two fins and two baffles enclose into an annular structure, so that the insulation space is annular.

As a further improvement, all be equipped with the arc boss on two baffles, be equipped with respectively on first insulation board and the second insulation board with two baffles on the arc boss complex arc recess of pegging graft.

In order to solve the above problem, the present invention provides a rotary switch contact system, which includes:

the moving contact accommodating cavity and the static contact accommodating cavity are arranged on the base;

the static contact group comprises two static contacts arranged in the static contact accommodating cavities, and at least one pair of elastic contact plates for clamping fins or a partition plate are arranged on the static contacts;

the linkage shaft is arranged on the base and can drive the moving contact to rotate, and when the two fins are respectively clamped by the two fixed contacts, the connection is realized; when the moving contact body and the insulating component rotate simultaneously until the two fins are separated from the two fixed contacts respectively, disconnection is realized.

As a further improvement, the bottom of universal driving shaft is equipped with the flange, the bottom of flange is equipped with the round axle portion, the moving contact holds the chamber bottom and is equipped with and holds the constant head tank of flange, be equipped with in the constant head tank and hold the round axle hole of round axle portion, the upper end of universal driving shaft is equipped with the square shaft, be provided with relatively on moving contact body, first insulation board, the second insulation board and peg graft complex linkage hole with the square shaft.

As a further improvement, the system includes a plurality of moving contacts, sets up a plurality of static contacts group relatively with the moving contact, and a plurality of moving contacts are established in proper order the cover is established form multilevel structure on the universal driving shaft, the universal driving shaft can drive a plurality of moving contacts are rotatory simultaneously.

As a further improvement, the two elastic contact plates of the pair of elastic contact plates are all provided with a stationary contact, and under a loose state, the distance between the two elastic contact plates is smaller than the thickness of the fin.

As a further improvement, the static contact holds the intracavity and is equipped with the location boss, be equipped with on the static contact with location boss complex second locating hole, the location boss is right with the cooperation of second locating hole the static contact is fixed a position.

The utility model has the advantages that:

the utility model discloses a moving contact is through setting up insulating assembly, and insulating assembly includes first insulation board, second insulation board and two baffles, forms annular insulation space between baffle and first insulation board and the second insulation board respectively, is favorable to promoting electrical insulation, and the switching-off of electric arc when also being favorable to the disconnection guarantees the break-make performance of switch. Has the advantages of simple structure, convenient assembly and disassembly, etc.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is an exploded schematic view of a movable contact in a preferred embodiment of the present invention;

fig. 2 is a schematic view of the overall structure of the movable contact in the preferred embodiment of the present invention;

fig. 3 is a side view of a movable contact in a preferred embodiment of the invention;

fig. 4 is a sectional view of a movable contact in a preferred embodiment of the present invention;

fig. 5 is a schematic view of the overall structure of a rotary switch contact system in a preferred embodiment of the present invention;

fig. 6 is an exploded view of the rotary switch contact system in accordance with the preferred embodiment of the present invention;

fig. 7 is a schematic diagram of the on state of the rotary switch contact system in the preferred embodiment of the present invention;

fig. 8 is a schematic diagram of the off state of the rotary switch contact system in the preferred embodiment of the present invention;

fig. 9 is a schematic structural view of a base in a preferred embodiment of the present invention;

fig. 10 is a first schematic structural view of a stationary contact according to a preferred embodiment of the present invention;

fig. 11 is a schematic structural diagram of a static contact in the preferred embodiment of the present invention;

fig. 12 is a schematic structural view of a linkage shaft in a preferred embodiment of the present invention.

Description of the labeling: 1. a moving contact; 10. a moving contact body; 11. a fin; 12. a first positioning hole; 13. a linkage hole; 20. a first insulating plate; 30. a second insulating plate; 31. positioning the shaft; 32. connecting holes; 33. an arc-shaped groove; 40. a partition plate; 41. an arc-shaped boss; 50. an insulating space; 60. static contact; 61. an elastic touch panel; 62. a stationary contact; 63. a wiring board; 64. a wiring hole; 65. a second positioning hole; 70. a linkage shaft; 71. a flange; 72. a round shaft portion; 73. a square shaft; 74. a square hole; 81. a square nut; 82. a binding screw; 100. a base; 110. a moving contact accommodating cavity; 120. a static contact accommodating cavity; 121. positioning the boss; 130. positioning a groove; 140. round axle hole.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1-4, for the movable contact in the preferred embodiment of the present invention, it includes a movable contact body 10 and an insulating assembly, two fins 11 are disposed on the movable contact body 10, the insulating assembly includes a first insulating plate 20, a second insulating plate 30 and two partition plates 40, the movable contact body 10 and two partition plates 40 are all disposed between the first insulating plate 20 and the second insulating plate 30, two partition plates 40 are disposed on two sides of the two fins 11 respectively, an insulating space 50 is formed between the partition plate 40 and the first insulating plate 20 and the second insulating plate 30 respectively, i.e. an insulating space is formed on two sides of the partition plate 40, which is beneficial to improve the electrical insulation property, and is also beneficial to extinguishing the arc when the switch is disconnected, thereby ensuring the on-off performance of the switch.

The moving contact body 10 and the insulating component can rotate simultaneously until the two fins 11 are respectively clamped by the two fixed contacts 60, so that the connection is realized; the moving contact body 10 and the insulating assembly can rotate simultaneously until the two fins 11 are separated from the two fixed contacts 60 respectively, so as to realize disconnection.

In some embodiments, the first insulating plate 20 and the second insulating plate 30 are both provided with a positioning shaft 31 and a connecting hole 32, the positioning shaft 31 on the first insulating plate 20 is in insertion fit with the connecting hole 32 on the second insulating plate 30, and the positioning shaft 31 on the second insulating plate 30 is in insertion fit with the connecting hole 32 on the first insulating plate 20, so that the stability of connection between the first insulating plate 20 and the second insulating plate 30 is ensured, and meanwhile, the advantages of convenience in disassembly and assembly are achieved.

In one embodiment, the movable contact body 10 is provided with a first positioning hole 12 in plug-in fit with the positioning shaft 31, and the first positioning hole 12 can effectively ensure the stability of the connection between the movable contact body 10 and the insulating assembly. Optionally, the number of the first positioning holes 12 is four, and the four first positioning holes 12 are arranged in a rectangular shape.

In some embodiments, one spacer 40 is connected to the first insulating plate 20 to form a first insulator, and the other spacer 40 is connected to the second insulating plate 30 to form a second insulator, and the first insulator and the second insulator are identical in structure. An insulating component can be assembled by using two identical insulating parts, which is beneficial to mass production and processing, convenient to assemble and saves cost.

In some embodiments, the two partitions 40 are both in a fan-ring shape, and the two fins 11 and the two partitions 40 enclose an annular structure, so that the insulating space 50 is in a ring shape, and the insulating performance is effectively ensured.

Optionally, the two partition plates 40 are provided with arc-shaped bosses 41, the first insulating plate 20 and the second insulating plate 30 are respectively provided with arc-shaped grooves 33 which are matched with the arc-shaped bosses 41 on the two partition plates 40 in an inserting manner, so that the strength of the structure is further ensured, gaps between the connecting surfaces are reduced, and the insulating property is further improved.

As shown in fig. 5-8, the preferred embodiment of the present invention also discloses a rotary switch contact system, which comprises a base 100, a movable contact 1, a stationary contact group and a linkage shaft 70. The base 100 is provided with a moving contact accommodating cavity 110 and a fixed contact accommodating cavity 120, which are shown in fig. 9.

The structure of the movable contact 1 is the same as that of the movable contact 1 in the above embodiment, specifically, the movable contact 1 includes a movable contact body 10 and an insulating assembly, two fins 11 are disposed on the movable contact body 10, the insulating assembly includes a first insulating plate 20, a second insulating plate 30 and two partition plates 40, the movable contact body 10 and the two partition plates 40 are both disposed between the first insulating plate 20 and the second insulating plate 30, the two partition plates 40 are respectively disposed on two sides of the two fins 11, and insulating spaces 50 are respectively formed between the partition plates 40 and the first insulating plate 20 and the second insulating plate 30. Further, the movable contact 1 may further include other features in the above embodiments, which are not described herein again.

The static contact set includes two static contacts 60 disposed in the static contact accommodating cavity 120, the static contacts 60 are elastic conductive members, as shown in fig. 10-11, and at least one pair of elastic contact plates 61 for clamping the fins 11 or the partition 40 is disposed on the static contacts 60.

Further, the two elastic contact plates 61 of the pair of elastic contact plates 61 are provided with a stationary contact 62, in a relaxed state, the distance between the two elastic contact plates 61 is smaller than the thickness of the fin 11, when the fin 11 is screwed between the two elastic contact plates 61, the fin 11 props the two elastic contact plates 61 apart, so that the two elastic contact plates 61 generate pressure on the fin 11, and reliable connection between the fin 11 and the elastic contact plates 61 is ensured, when the fin 11 is screwed out between the two elastic contact plates 61, generated electric arcs can enter the insulating spaces 50 on both sides of the partition plate 40 and are isolated from each other by the partition plate 40, so that electric arc energy is divided into two parts, and rapid extinguishing of the electric arcs is promoted.

In some embodiments, a positioning boss 121 is disposed in the static contact accommodating cavity 120, a second positioning hole 65 matched with the positioning boss is disposed on the static contact 60, and the positioning boss 121 is matched with the second positioning hole 65 to position the static contact 60.

Furthermore, the static contact 60 is further provided with a wiring board 63, the wiring board 63 is connected with a square nut 81 and a wiring screw 82, the wiring board 63 is provided with a wiring hole 64, and the wiring board 63 is tightly abutted by the square nut 81 and then locked on the base 100 through the wiring screw 82.

During assembly, the movable contact 1 and the fixed contact 60 are preassembled, then are respectively placed in the movable contact accommodating cavity 110 and the fixed contact accommodating cavity 120, the wiring board 63 is tightly abutted through the square nut 81, so that the positioning boss 121 is inserted into the second positioning hole 65, and then the wiring board 63 is locked on the base 100 through the wiring board 63 and the square nut 81 by the wiring screw 82 penetrating through the wiring board 63 and the square nut 81.

The linkage shaft 70 is disposed on the base 100, the linkage shaft 70 can drive the movable contact 1 to rotate, and when two fins 11 are respectively clamped by two fixed contacts 60, the movable contact is switched on, referring to fig. 7; the disconnection is achieved when the two fins 11 are disengaged from the two stationary contacts 60, respectively, see fig. 8.

As shown in fig. 12, in some embodiments, a flange 71 is disposed at the bottom of the linkage shaft 70, a circular shaft portion 72 is disposed at the bottom of the flange 71, a positioning groove 130 for accommodating the flange 71 is disposed at the bottom of the movable contact accommodating cavity 110, a circular shaft hole 140 for accommodating the circular shaft portion 72 is disposed in the positioning groove 130, a square shaft 73 is disposed at the upper end of the linkage shaft 70, and further, a square hole 74 for connecting with other square shafts in series is disposed at the bottom of the circular shaft portion 72. The moving contact body 10, the first insulating plate 20 and the second insulating plate 30 are relatively provided with a linkage hole 13 which is in plug-in fit with the square shaft 73, as shown in fig. 1.

In some embodiments, the system includes a plurality of movable contacts 1 and a plurality of stationary contact groups disposed opposite to the movable contacts 1, the plurality of movable contacts 1 are sequentially sleeved on the linkage shaft 70 and form a multi-stage structure, and the linkage shaft 70 can drive the plurality of movable contacts 1 to rotate simultaneously to selectively connect or disconnect the corresponding movable contacts 1 and stationary contact groups.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A movable contact, comprising:

2. The movable contact of claim 1 wherein the first insulating plate and the second insulating plate are each provided with a positioning shaft and a connecting hole, the positioning shaft of the first insulating plate is inserted into and engaged with the connecting hole of the second insulating plate, and the positioning shaft of the second insulating plate is inserted into and engaged with the connecting hole of the first insulating plate.

3. The movable contact of claim 2 wherein said movable contact body defines a first positioning hole for mating with said positioning shaft.

4. The movable contact of claim 1 wherein said two partitions are each in the shape of a sector ring, and said two fins and said two partitions define an annular structure, such that said insulating space is annular.

5. The movable contact of claim 1 wherein the two spacers each have an arcuate projection, and the first insulating plate and the second insulating plate each have arcuate recesses for mating engagement with the arcuate projections of the two spacers.

6. A rotary switch contact system, comprising:

7. The rotary switch contact system according to claim 6, wherein a flange is provided at a bottom of the linkage shaft, a round shaft portion is provided at a bottom of the flange, a positioning groove for receiving the flange is provided at a bottom of the movable contact receiving cavity, a round shaft hole for receiving the round shaft portion is provided in the positioning groove, a square shaft is provided at an upper end of the linkage shaft, and linkage holes for mating with the square shaft are provided on the movable contact body, the first insulating plate and the second insulating plate.

8. The rotary switch contact system of claim 6, wherein the system comprises a plurality of moving contacts and a plurality of stationary contact sets disposed opposite to the moving contacts, the plurality of moving contacts are sequentially sleeved on the linkage shaft and form a multi-stage structure, and the linkage shaft can drive the plurality of moving contacts to rotate simultaneously.

9. The rotary switch contact system according to claim 6, wherein a stationary contact is provided on each of two of a pair of resilient contact plates, and wherein the distance between the two resilient contact plates is less than the thickness of the tab in a relaxed state.

10. The rotary switch contact system according to claim 6, wherein a positioning boss is disposed in the static contact accommodating cavity, a second positioning hole is disposed on the static contact, and the second positioning hole is engaged with the positioning boss, and the positioning boss is engaged with the second positioning hole to position the static contact.