CN220400424U - Contact mechanism of dual-power transfer switch - Google Patents
Contact mechanism of dual-power transfer switch Download PDFInfo
- Publication number
- CN220400424U CN220400424U CN202321957823.4U CN202321957823U CN220400424U CN 220400424 U CN220400424 U CN 220400424U CN 202321957823 U CN202321957823 U CN 202321957823U CN 220400424 U CN220400424 U CN 220400424U
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- Prior art keywords
- contact
- moving contact
- moving
- power transfer
- transfer switch
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- 230000000712 assembly Effects 0.000 claims abstract description 23
- 238000000429 assembly Methods 0.000 claims abstract description 23
- 230000009977 dual effect Effects 0.000 claims description 9
- 235000014676 Phragmites communis Nutrition 0.000 claims description 7
- 244000273256 Phragmites communis Species 0.000 claims 2
- 230000003044 adaptive effect Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model provides a contact mechanism of a dual-power change-over switch, which comprises a shell, wherein a rotatable rotating shaft is arranged in the shell, a perforation is arranged on the rotating shaft, two groups of moving contact assemblies are arranged in the perforation in a penetrating way, a first fixed contact and a second fixed contact are also arranged in the shell, the first fixed contact and the second fixed contact are respectively arranged at two ends of the moving contact assemblies, the moving contact assemblies are provided with a first moving contact and a second moving contact, a gap for the first fixed contact and the second fixed contact to be inserted and connected is arranged between the first moving contact and the second moving contact, the cross sections of the first moving contact and the second moving contact are arc-shaped, and the two groups of moving contact assemblies are connected with the first fixed contact and the second fixed contact, so that the contact point between the moving contact assemblies and the fixed contact is increased, the contact area between the two is further reduced, the temperature generated when current passes through is greatly reduced, and the service life of a product is prolonged.
Description
Technical Field
The utility model relates to the technical field of piezoelectric devices, in particular to a contact mechanism of a dual-power transfer switch.
Background
The dual-power transfer switch is used for avoiding the fault power supply to supply power to a load when the main power supply fails in a power supply system, and reliably selecting a qualified power supply to be put into normal operation so as to ensure uninterrupted power supply, and the wiring of the dual-power transfer switch used in China at present is two paths of power supplies, namely one standby power supply and the other standby power supply.
The double-power change-over switch comprises a shell, a rotatable rotating shaft is arranged in the shell, moving contacts are arranged in the rotating shaft in a penetrating manner, a first fixed contact and a second fixed contact which are connected with two ends of the moving contacts are arranged on two sides of the rotating shaft respectively, the second fixed contacts are distributed at intervals along the vertical direction, the two second fixed contacts are respectively connected with two power supplies, the moving contacts are in arc-shaped arrangement with the faces, which are contacted with the fixed contacts, of the contacts, the contact faces are one point, contact resistance exists between the moving contacts and the fixed contacts, temperature rise can occur when current passes through the moving contacts, the contact area between the moving contacts and the fixed contacts is small, the contact resistance between the moving contacts is large, higher temperature rise can occur when current passes through the moving contacts, and then an internal insulating part is aged, so that the double-power change-over switch cannot be used.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the defects of small contact area and high temperature rise between the moving contact and the fixed contact in the prior art, thereby providing the contact mechanism of the dual-power transfer switch with large contact area and low temperature rise between the moving contact and the fixed contact.
The utility model provides a contact mechanism of a double-power change-over switch, which comprises a shell, wherein a rotatable rotating shaft is arranged in the shell, a perforation is arranged on the rotating shaft, two groups of moving contact assemblies are arranged in the perforation in a penetrating way, a first fixed contact and a second fixed contact are also arranged in the shell, the first fixed contact and the second fixed contact are respectively arranged at two ends of the moving contact assemblies, the second fixed contacts are arranged at intervals along the direction of the shell, the two second fixed contacts are respectively connected with two power supplies, the moving contact assemblies are provided with a first moving contact and a second moving contact, a gap for the first fixed contact and the second fixed contact to be inserted and connected is arranged between the first moving contact and the second moving contact, and the cross sections of the first moving contact and the second moving contact are in arc-shaped arrangement.
Two reeds used for pressing the movable contact assembly and connected with the first fixed contact and the second fixed contact are arranged in the through hole, each reed is provided with a flat plate part which is attached to the inner wall of the through hole, and a plurality of extending parts which are arranged on two sides of the flat plate part and apply acting force to the two groups of movable contact assemblies.
The mounting plate used for placing the moving contact assembly is arranged in the middle of the through hole, clamping grooves are formed in the first moving contact and the second moving contact respectively, and the clamping grooves are in fit and clamping connection with the inner wall of the through hole.
The shell comprises an upper cover and a base, wherein a plurality of arc-extinguishing grid sheets are further arranged on the base and located between the first fixed contact and the second fixed contact, and the arc-extinguishing grid sheets are provided with openings through which the moving contact assembly can pass.
The arc extinguishing grid sheet is fixedly connected with the upper cover through an inserting structure.
The plug-in structure comprises a first plug block and a first slot, and the first plug block is arranged on the upper cover; the first slot is arranged on the arc extinguishing grid sheet and can be matched and spliced with the first plug.
The base is provided with a plurality of second slots for the arc extinguishing grid plates to be inserted.
The base with be equipped with the connecting plate that is used for connecting both on the upper cover, the shaping has a plurality of ventilation holes on the connecting plate, is close to the top the ventilation hole on the connecting plate of arc extinguishing bars piece one side is the slope setting.
The technical scheme of the utility model has the following advantages:
1. the utility model provides a contact mechanism of a double-power change-over switch, which comprises a shell, wherein a rotatable rotating shaft is arranged in the shell, a perforation is arranged on the rotating shaft, two groups of moving contact assemblies are arranged in the perforation in a penetrating way, a first fixed contact and a second fixed contact are also arranged in the shell, the first fixed contact and the second fixed contact are respectively arranged at two ends of the moving contact assemblies, the second fixed contacts are arranged at intervals along the direction of the shell, the two second fixed contacts are respectively connected with two power supplies, the moving contact assemblies are provided with a first moving contact and a second moving contact, a gap for the first moving contact and the second moving contact to be inserted and connected is arranged between the first moving contact and the second moving contact, the cross sections of the first moving contact and the second moving contact are arc-shaped, and the two groups of moving contact assemblies are connected with the first fixed contact and the second fixed contact, so that the contact point between the moving contact assemblies and the fixed contact is increased, the contact area between the two moving contact assemblies is increased, the contact resistance between the two moving contact assemblies is reduced, the temperature generated when the moving contact assemblies pass current is greatly reduced, and the service life of a product is prolonged.
2. According to the contact mechanism of the dual-power transfer switch, the mounting plate for placing the moving contact assembly is arranged in the middle of the through hole, the first moving contact and the second moving contact are respectively provided with the clamping grooves, the clamping grooves are in fit and clamping connection with the inner wall of the through hole, and the structure is mounted in the through hole with the moving contact assembly to prevent the moving contact assembly from being separated from the through hole along the horizontal direction.
3. The utility model provides a contact mechanism of a dual-power transfer switch, wherein an inserting structure comprises a first inserting block and a first inserting groove, and the first inserting block is arranged on an upper cover; the first slot is arranged on the arc-extinguishing grid sheet and can be matched and spliced with the first plug block, the splicing structure is convenient for the arc-extinguishing grid sheet to be arranged on the upper cover, and the first slot and the first plug block which are matched and spliced have the advantage of simple structure.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of a contact mechanism of a dual power transfer switch of the present utility model;
FIG. 2 is a perspective view of FIG. 1 with the upper cover removed;
fig. 3 is a perspective view of fig. 2 with the rotating shaft and arc chute removed;
fig. 4 is a perspective view of the upper cover;
FIG. 5 is a perspective view of a rotating shaft;
figure 6 is a perspective view of a reed;
fig. 7 is a perspective view of an arc chute sheet.
Reference numerals illustrate: 1. a housing; 11. an upper cover; 12. a base; 13. a first plug; 14. a second slot; 15. a connecting plate; 16. a vent hole; 2. a rotating shaft; 21. perforating; 22. a mounting plate; 3. a moving contact assembly; 31. a first moving contact; 32. a second moving contact; 33. a clamping groove; 4. a first stationary contact; 5. a second stationary contact; 6. a reed; 61. a flat plate portion; 62. an extension; 7. arc extinguishing grid plates; 71. an opening; 72. a first slot.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Examples
The embodiment provides a contact mechanism of a dual-power transfer switch, which comprises a shell 1, a rotating shaft 2, a moving contact assembly 3, a first fixed contact 4, a second fixed contact 5, a reed 6 and an arc extinguishing grid sheet 7 as shown in figures 1 and 2.
The shell 1, as shown in fig. 1-4, is equipped with rotatable axis of rotation 2 in it, be equipped with perforation 21 on the axis of rotation 2, wear to be equipped with two sets of moving contact assemblies 3 in the perforation 21, still be equipped with first stationary contact 4 and second stationary contact 5 in the shell 1, be equipped with in the middle of the perforation 21 and be used for placing the mounting panel 22 of moving contact assembly 3, shell 1 includes upper cover 11 and base 12, still be equipped with a plurality of arc extinguishing bars 7 on the base 12, be equipped with a plurality of first inserts 13 on the upper cover 11, the shaping has a plurality of confession on the base 12 arc extinguishing bars 7 male second slot 14, the base 12 with be equipped with on the upper cover 11 and be used for connecting both connecting plate 15, the shaping has a plurality of ventilation holes 16 on the connecting plate 15, is close to the top arc extinguishing bars 7 one side ventilation holes 16 on the connecting plate 15 are the slope setting.
The movable contact assembly 3, the first fixed contact 4 and the second fixed contact 5 are shown in fig. 2, 3 and 5, the first fixed contact 4 and the second fixed contact 5 are respectively arranged at two ends of the movable contact assembly 3, the second fixed contact 5 is provided with two fixed contacts and is arranged along the direction of the shell 1 at intervals, the two fixed contacts 5 are respectively connected with two power supplies, the movable contact assembly 3 is provided with a first movable contact 31 and a second movable contact 32, a gap for the first fixed contact 4 and the second fixed contact 5 to be inserted and connected is formed between the first movable contact 31 and the second movable contact 32, the cross sections of the first movable contact 31 and the second movable contact 32 are in arc-shaped arrangement, the first movable contact 31 and the second movable contact 32 are respectively provided with a clamping groove 33, and the clamping grooves 33 are in fit and clamped with the inner walls of the through holes 21.
The spring 6 is disposed in the through hole 21, as shown in fig. 5 and 6, and is used for pressing the moving contact assembly 3 to connect with the first fixed contact 4 and the second fixed contact 5, the spring 6 has a flat plate portion 61 that is attached to the inner wall of the through hole, and a plurality of extension portions 62 that are disposed on two sides of the flat plate portion 61 and apply forces to the two groups of moving contact assemblies 3.
The arc-extinguishing grid 7 is located between the first fixed contact 4 and the second fixed contact 5, as shown in fig. 2 and 7, the arc-extinguishing grid 7 has an opening 71 through which the moving contact assembly 3 can pass, and a first slot 72 is formed in the arc-extinguishing grid 7 and can be inserted into the first plug 13 in an adapting manner.
The utility model provides a contact mechanism of a dual-power change-over switch, which comprises a shell 1, wherein a rotatable rotating shaft 2 is arranged in the shell, a perforation 21 is arranged on the rotating shaft 2, two groups of moving contact assemblies 3 are arranged in the perforation 21 in a penetrating way, a first fixed contact 4 and a second fixed contact 5 are also arranged in the shell 1, the first fixed contact 4 and the second fixed contact 5 are respectively arranged at two ends of the moving contact assembly 3, the second fixed contact 5 is provided with two, the two second fixed contacts 5 are arranged at intervals along the direction of the shell 1, two power supplies are respectively connected with the two second fixed contacts 5, the moving contact assembly 3 is provided with a first moving contact 31 and a second moving contact 32, a gap for the first fixed contact 4 and the second fixed contact 5 to be inserted and connected is arranged between the first moving contact 31 and the second moving contact 32, and the cross section of the first moving contact 31 and the second moving contact 32 are arranged in an arc shape, the two groups of moving contact assemblies 3 are connected with the first fixed contact 4 and the second fixed contact 5, the contact 5 is connected with the two moving contact 5, and the contact area between the two moving contacts is greatly reduced, so that the contact area between the two moving contacts is greatly prolonged, and the contact area between the two contacts is greatly prolonged.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (8)
1. The utility model provides a contact mechanism of dual power change-over switch, its characterized in that, including casing (1), be equipped with rotatable axis of rotation (2) in it, be equipped with perforation (21) on axis of rotation (2), wear to be equipped with two sets of moving contact assemblies (3) in perforation (21), still be equipped with first stationary contact (4) and second stationary contact (5) in casing (1), first stationary contact (4) with second stationary contact (5) divide to locate the both ends of moving contact assembly (3), second stationary contact (5) have two, and follow casing (1) direction interval sets up, two power are connected respectively to second stationary contact (5), moving contact assembly (3) have first moving contact (31) and second moving contact (32), first moving contact (31) with have between second moving contact (32) and can supply first stationary contact (4) and second stationary contact (5) to insert the clearance of connection, first moving contact (31) and second moving contact (32) transversal arc setting.
2. The contact mechanism of a dual power transfer switch according to claim 1, wherein two reeds (6) for pressing the moving contact assembly (3) to be connected with the first fixed contact (4) and the second fixed contact (5) are arranged in the through hole (21), the reeds (6) are provided with flat plate parts (61) which are attached to the inner wall of the through hole, and a plurality of extension parts (62) which are arranged on two sides of the flat plate parts (61) and apply acting force to the two groups of moving contact assemblies (3).
3. The contact mechanism of the dual power transfer switch according to claim 2, wherein a mounting plate (22) for placing the moving contact assembly (3) is arranged in the middle of the through hole (21), clamping grooves (33) are respectively arranged on the first moving contact (31) and the second moving contact (32), and the clamping grooves (33) are in adaptive clamping connection with the inner wall of the through hole (21).
4. The contact mechanism of a dual power transfer switch according to claim 1, wherein the housing (1) comprises an upper cover (11) and a base (12), the base (12) is further provided with a plurality of arc extinguishing grid plates (7), the arc extinguishing grid plates (7) are located between the first fixed contact (4) and the second fixed contact (5), and the arc extinguishing grid plates (7) are provided with openings (71) through which the moving contact assembly (3) can pass.
5. The contact mechanism of a dual power transfer switch according to claim 4, wherein the arc extinguishing gate sheet (7) is fixedly connected with the upper cover (11) through a plug-in structure.
6. The contact mechanism of a dual power transfer switch of claim 5, wherein the plug structure comprises:
the first inserting block (13) is arranged on the upper cover (11);
the first slot (72) is arranged on the arc extinguishing grid sheet (7) and can be matched and spliced with the first inserting block (13).
7. The contact mechanism of a dual power transfer switch as claimed in claim 6, wherein a plurality of second slots (14) into which the arc extinguishing bars (7) are inserted are formed in the base (12).
8. The contact mechanism of a dual power transfer switch according to claim 7, wherein the base (12) and the upper cover (11) are provided with a connecting plate (15) for connecting the base and the upper cover, a plurality of vent holes (16) are formed in the connecting plate (15), and the vent holes (16) on the connecting plate (15) close to one side of the arc extinguishing grid sheet (7) above are obliquely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321957823.4U CN220400424U (en) | 2023-07-24 | 2023-07-24 | Contact mechanism of dual-power transfer switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321957823.4U CN220400424U (en) | 2023-07-24 | 2023-07-24 | Contact mechanism of dual-power transfer switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220400424U true CN220400424U (en) | 2024-01-26 |
Family
ID=89612592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321957823.4U Active CN220400424U (en) | 2023-07-24 | 2023-07-24 | Contact mechanism of dual-power transfer switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220400424U (en) |
-
2023
- 2023-07-24 CN CN202321957823.4U patent/CN220400424U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |