CN213988630U

CN213988630U - Multi-element contact structure of dual-power transfer switch

Info

Publication number: CN213988630U
Application number: CN202023233818.8U
Authority: CN
Inventors: 岳鹏
Original assignee: Schneider Wingoal Tianjin Electric Equipment Co Ltd
Current assignee: Schneider Wingoal Tianjin Electric Equipment Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-08-17
Anticipated expiration: 2030-12-28

Abstract

The utility model provides a dual supply change over switch's many first contact structures, including the epitheca, the moving contact, the inferior valve, first installation axle, the second installation axle, contact spring, silver point and even board, the inside a plurality of bars type recesses that are equipped with of epitheca, and a moving contact of installation in every bars type recess, the inferior valve downside sets up even board, the downside and the even board upside of every moving contact, the first end of moving contact is connected to inside the inferior valve through the fixed cover of second installation axle, the second end of moving contact connects to inside the inferior valve through the fixed cover of first installation axle, the second end upside contact of moving contact is connected to contact spring's lower extreme, contact spring's upper end contact is connected to epitheca top inner wall, the second end downside of moving contact sets up silver point. A dual supply change over switch's many first contact structure, each moving contact all provides contact pressure by independent contact spring, makes contact pressure more stable, easy control. The structure has reasonable design, simplicity and low cost.

Description

Multi-element contact structure of dual-power transfer switch

Technical Field

The utility model belongs to the technical field of electrical equipment, especially, relate to a dual supply change over switch's many first contact structure.

Background

The double-power-supply change-over switch electric appliance is a terminal electric appliance widely used, and mainly controls the action of a contact system through an operating mechanism so as to connect or disconnect a common power supply and a standby power supply, thereby ensuring the safety of an electric power system and the continuity of production. The contact mechanism is a mechanism directly connected with a power supply in a transfer switch electric appliance, a contact in the contact mechanism is divided into a moving contact and a fixed contact according to the condition of whether the contact moves, and the contact can be divided into a finger-type clapper type contact and a knife-type plug-in type contact according to a combination mode, wherein the finger-type clapper type contact can resist burning under the action of electric arcs when a circuit is closed or opened and has higher connection and disconnection capacities. The contact system that is commonly used at present is mostly single contact clapped formula structure, because the area of contact between this kind of structure moving contact and the static contact is little, consequently makes the contact temperature rise too high easily, in addition, in order to guarantee that the product has reliable dynamic, thermal stability, can only adopt the method of increasing contact pressure, but too big contact pressure can increase the operating force of product again to cause the inconvenience for the user.

Disclosure of Invention

In view of this, the utility model aims at providing a dual supply change over switch's many first contact structure to it is little to solve the area of contact between prior art moving contact and the static contact, consequently makes the too high problem of contact temperature rise easily.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a multi-element contact structure of a dual power transfer switch comprises an upper shell, a plurality of grid grooves, a lower shell, a first mounting shaft, a second mounting shaft, a contact spring, a silver point and a connecting plate, wherein the upper shell is internally provided with the grid grooves which are arranged in parallel, each grid groove is internally provided with a movable contact, the movable contacts are arranged in parallel, the lower shell is arranged at the lower side of the upper shell, the middle part of the lower shell is provided with a through groove, the lower side of the lower shell is provided with the connecting plate, the movable contacts are all positioned in the through grooves, the lower side of each movable contact is contacted with the upper side of the connecting plate, the first end of each movable contact is fixedly sleeved in the lower shell through a second mounting shaft 8, the second end of each movable contact is connected in the lower shell through the first mounting shaft, the upper side of the second end of each movable contact is in contact connection with the lower end of the contact spring, and the upper end of the contact spring is in contact connection with the inner wall at the top of the upper shell, and a silver point is arranged on the lower side of the second end of the moving contact.

Furthermore, the cross section of the movable contact is of an L-shaped structure.

Further, the moving contact comprises a first copper plate and a second copper plate which are of an integral structure, the first end of the first copper plate is fixedly connected to the first end of the second copper plate, a first through hole is formed in the second end of the first copper plate, the periphery of the first installation shaft is located in the first through hole, a gap is formed between the periphery of the first installation shaft and the inner wall of the first through hole, a contact spring is installed on the side of the second end of the first copper plate, a silver point is arranged on the lower side of the second end of the first copper plate, the lower side of the first end of the first copper plate is in contact with the upper side of the connecting plate, a second through hole is formed in the first end of the second copper plate, and the periphery of the second installation shaft is located in the second through hole.

Further, the first through hole is an elliptical long hole, and the second through hole is a circular hole.

Furthermore, each grid-shaped groove of the upper shell is internally provided with a blind hole, and the upper end of the contact spring is positioned in the blind hole.

Furthermore, a clamping groove is formed in the upper side of the second end of the first copper plate, and the lower end of the contact spring is located in the clamping groove.

Compared with the prior art, a dual power transfer switch's many first contact structure have following advantage:

(1) a dual supply change over switch's many first contact structures, be with on the main loop on the electric current average assignment many first contacts to increased the area of contact between moving contact and the static contact, be difficult for causing the contact temperature rise too high. In addition, because the contact area between the moving contact and the static contact is increased, the product can be ensured to have reliable dynamic and thermal stability without overlarge contact pressure, and each moving contact is provided with the contact pressure by an independent contact spring, so that the contact pressure is more stable and is easy to control.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a multiple contact structure of a dual power transfer switch according to an embodiment of the present invention;

fig. 2 is a bottom view of a multiple contact structure of a dual power transfer switch according to an embodiment of the present invention;

fig. 3 is a top view of a multiple contact structure of a dual power transfer switch according to an embodiment of the present invention;

fig. 4 is a front view of a multiple contact structure of a dual power transfer switch according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of a multiple contact structure of a dual power transfer switch according to an embodiment of the present invention.

Description of reference numerals:

1-upper shell; 2-moving contact; 21-a first copper plate; 22-a second copper plate; 3-a lower shell; 4-a first mounting shaft; 5-a screw; 6-a nut; 7-a contact spring; 8-a second mounting axis; 9-silver point; 10-connecting the plates.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A multi-contact structure of a dual power transfer switch comprises an upper shell 1, a movable contact 2, a lower shell 3, a first installation shaft 4, a second installation shaft 8, a contact spring 7, a silver point 9 and a connecting plate 10, wherein a plurality of grid grooves are arranged in the upper shell 1, the grid grooves are arranged in parallel, a movable contact 2 is arranged in each grid groove, a plurality of movable contacts 2 are arranged in parallel, the lower shell 3 is arranged at the lower side of the upper shell 1, a through groove is arranged in the middle of the lower shell 3, the connecting plate 10 is arranged at the lower side of the lower shell 3, a plurality of movable contacts 2 are all positioned in the through groove, the lower side of each movable contact 2 is contacted with the upper side of the connecting plate 10, the first end of each movable contact 2 is fixedly connected to the inner part of the lower shell 3 through the second installation shaft 8, the second installation shaft 8 is a roller pin 5 flat head, the second end of each movable contact 2 is connected to the inner part of the lower shell 3 through the first installation shaft 4 flat head, the first installation shaft 4 is a roller pin 4 flat head, the contact of second end upside of moving contact 2 is connected to the lower extreme of contact spring 7, the upper end contact of contact spring 7 is connected to 1 top inner wall of epitheca, the second end downside of moving contact 2 sets up silver point 9, the setting of a plurality of moving contact 2 is on distributing the many first contacts of electric current average on the major loop, thereby increased the area of contact between moving contact and the static contact, be difficult for causing the contact temperature rise too high, in addition, because the area of contact between moving contact and the static contact increases, consequently need not too big contact pressure and just can guarantee that the product has reliable moving, thermal stability.

The cross section of the moving contact 2 is of an L-shaped structure, the moving contact 2 comprises a first copper plate 21 and a second copper plate 22 which are of an integral structure, the first end of the first copper plate 21 is fixedly connected to the first end of the second copper plate 22, the second end of the first copper plate 21 is provided with a first through hole, the periphery of the first mounting shaft 4 is positioned in the first through hole, a gap is formed between the periphery of the first mounting shaft 4 and the inner wall of the first through hole, a contact spring 7 is arranged on the upper side of the second end of the first copper plate 21, a silver point 9 is arranged on the lower side of the second end of the first copper plate 21, the lower side of the first end of the first copper plate 21 is in contact with the upper side of a connecting plate 10, the first end of the second copper plate 22 is provided with a second through hole, the periphery of the second mounting shaft 8 is positioned in the second through hole, the first through hole is an elliptical long hole, the second through hole is a round hole, and the applicability of the moving contact 2 is improved, the end point of the movable contact 2 can be displaced by a certain amount, so that the requirements of different models are met.

Each grid-shaped groove of the upper shell 1 is internally provided with a blind hole, the upper end of the contact spring 7 is positioned in the blind hole, the upper side of the second end of the first copper plate 21 is provided with a clamping groove, the lower end of the contact spring 7 is positioned in the clamping groove, and each moving contact is provided with contact pressure by an independent contact spring, so that the contact pressure is more stable and is easy to control.

The implementation process of the multi-contact structure of the dual-power transfer switch comprises the following steps:

the inside recess that is equipped with a plurality of bars of epitheca 1, be used for placing moving contact 2, head at every recess is equipped with circular blind hole, be used for placing contact spring 7, moving contact 2 is the sword type slabby, one end has welded silver point 9, and be equipped with oval slot hole, and the other end is equipped with the round hole, wear it together along the circular through-hole of moving contact 2 tip with flat head kingpin, pass the oval slot hole of moving contact 2 other end with another flat head kingpin, place inside as the rotation center that produces the overrun of inferior valve 3, put into the blind hole of epitheca 1 with contact spring 7, put into the bars recess of epitheca 1 again in proper order with moving contact 2, lock epitheca 1 and inferior valve 3 with screw 5 and nut 6, form the contact subassembly, like this, each moving contact 2 all provides contact pressure by independent contact spring 7.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two power transfer switch's many first contact structures which characterized in that: the device comprises an upper shell (1), a movable contact (2), a lower shell (3), a first mounting shaft (4), a second mounting shaft (8), a contact spring (7), a silver point (9) and a connecting plate (10), wherein a plurality of grid-shaped grooves are arranged in the upper shell (1), the grid-shaped grooves are arranged in parallel, one movable contact (2) is arranged in each grid-shaped groove, a plurality of movable contacts (2) are arranged in parallel, the lower shell (3) is arranged on the lower side of the upper shell (1), a through groove is arranged in the middle of the lower shell (3), the connecting plate (10) is arranged on the lower side of the lower shell (3), the movable contacts (2) are all positioned in the through groove, the lower side of each movable contact (2) is contacted with the upper side of the connecting plate (10), the first end of each movable contact (2) is fixedly connected to the inside of the lower shell (3) through the second mounting shaft (8), the second end of each movable contact (2) is fixedly connected to the inside of the lower shell (3) through the first mounting shaft (4), the contact of second end upside of moving contact (2) is connected to the lower extreme of contact spring (7), and the upper end contact of contact spring (7) is connected to epitheca (1) top inner wall, and the second end downside of moving contact (2) sets up silver point (9).

2. The multiple contact structure of the dual power transfer switch of claim 1, wherein: the cross section of the moving contact (2) is of an L-shaped structure.

3. The multiple contact structure of the dual power transfer switch of claim 2, wherein: moving contact (2) are including first copper (21) and second copper (22) of a body structure, the first end fixed connection of first copper (21) to the first end of second copper (22), and the second end of first copper (21) is equipped with first perforation, and the periphery of first installation axle (4) is located in first perforation, and the periphery of first installation axle (4) with first fenestrate inner wall is equipped with the clearance, and second end upside installation contact spring (7) of first copper (21), second end downside of first copper (21) set up silver point (9), and first copper (21) first end downside contacts with even board (10) upside, and second copper (22) first end is equipped with the second perforation, and second installation axle (8) periphery is located in the second perforation.

4. The multiple contact structure of the dual power transfer switch of claim 3, wherein: the first through hole is an elliptical long hole, and the second through hole is a round hole.

5. The multiple contact structure of the dual power transfer switch of claim 1, wherein: each grid-shaped groove of the upper shell (1) is internally provided with a blind hole, and the upper end of the contact spring (7) is positioned in the blind hole.

6. The multiple contact structure of the dual power transfer switch of claim 3, wherein: the upper side of the second end of the first copper plate (21) is provided with a clamping groove, and the lower end of the contact spring (7) is positioned in the clamping groove.