CN218123237U

CN218123237U - Contact mechanism of dual-power transfer switch

Info

Publication number: CN218123237U
Application number: CN202221913167.3U
Authority: CN
Inventors: 李志明; 吴金辉; 但海龙; 王晓平
Original assignee: Zhejiang Mote Electric Co ltd
Current assignee: Zhejiang Mote Electric Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-12-23
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a dual power transfer switch's contact mechanism, which comprises a housin, and set up moving contact and the static contact in the casing, the moving contact is through being driven to close a floodgate and separating brake with the static contact, the moving contact sets up on a mounting bracket, the mounting bracket is provided with the protruding wall of an arc towards the anterior one side below of moving contact, the casing is provided with an arc concave wall at the rear of static contact, when mounting bracket and moving contact move to moving contact and static contact, the space at moving contact and static contact rear is blockked in the overlapping of the protruding wall of arc and the arc concave wall of arc. The utility model discloses when the separating brake, the air current that moving contact and static contact department formed will be blockked by the arc convex wall, can not flow backward to make the air current can flow to the explosion chamber forward, thereby better guide electric arc gets into the explosion chamber and accomplishes the arc extinguishing, improves the security of dual power transfer switch separating brake.

Description

Contact mechanism of dual-power transfer switch

Technical Field

The utility model belongs to the technical field of the electrical switch and specifically relates to a dual supply change over switch's contact mechanism is related to.

Background

In dual supply transfer switch, the contact system is one of key structure, and moving contact and static contact can form the air current in its periphery when separating brake, and the air current if flow to the space outside the explosion chamber, can lead to the space outside the explosion chamber with electric arc, influences the arc extinguishing effect, causes dual supply transfer switch to damage the risk.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming prior art's not enough, providing a dual supply change over switch's contact mechanism, through the setting of two arc walls, form the structure when sound contact combined floodgate and overlap, effectively block the air current when the separating brake, the better guidance of electric arc that forms when guaranteeing the separating brake is to the explosion chamber, improves the security that the switch used.

The utility model adopts the following technical scheme: the utility model provides a dual power transfer switch's contact mechanism, which comprises a housin, and set up moving contact and the static contact in the casing, the moving contact carries out combined floodgate and separating brake through being driven and static contact, the moving contact sets up on an installation frame, the installation frame is provided with the protruding wall of arc towards the anterior one side below of moving contact, the casing is provided with an arc concave wall at the rear of static contact, when installation frame and moving contact move to moving contact and static contact, the space at moving contact and static contact rear is blockked in the overlapping of the protruding wall of arc and arc concave wall.

As an improvement, the arc convex wall and the arc concave wall are arcs formed by taking the rotating axes of the mounting frame and the moving contact as the radius.

As an improvement, the quantity of moving contact is a plurality of, and the installation cavity that link up around a plurality of is seted up to the mounting bracket, and a plurality of moving contact one-to-one holds in the installation cavity, and the installation cavity is stretched out to a plurality of moving contact front portion, and the rear portion is spacing in the mounting bracket through an installation axle, and the installation axle is rotatable to be set up on the casing, sets up an elastic component in the installation cavity and contradicts the moving contact, makes the moving contact can float around the installation axle and exert the restoring force by the elastic component.

As an improvement, the upper portion of the mounting frame is hinged with a connecting frame, the other end of the connecting frame is hinged with a swing frame, and the swing frame is externally connected with a transmission shaft.

As an improvement, the link includes erects frame, crossbearer, first pivot and second pivot, erects the frame and for controlling two sets ofly, and two sets of erects the frame and connect through two sets of crossbearers, and the front end of locating the perpendicular frame is worn to locate simultaneously to first pivot, and the rear end of the perpendicular frame is worn to locate simultaneously in the second pivot wears to locate on the swing span.

As an improvement, the mounting cavities and the movable contacts are arranged into three groups in parallel.

As an improvement, the elastic piece is a spring, a convex column used for limiting one end of the spring is arranged on the inner wall of the installation cavity, and a groove used for limiting the other end of the spring is arranged on the movable contact.

As an improvement, the static contact includes the main part support and sets up the contact body on the main part support, and the main part support is including the second link that is located the middle part, set up respectively in the extension frame that is used for external connection at second link both ends and be used for setting up the arrangement frame of contact body, and arrangement frame, second link and extension frame are through metal bending integrated into one piece, and the reverse of arranging the frame relative second link formation U-shaped is buckled, makes the end of arranging the frame and extend and arrange the contact body on the upper surface towards the extension frame direction.

As an improvement, the second connecting frame is further provided with an arc striking plate, the arc striking plate comprises an arc striking angle, and the arc striking angle is adjacent to the end part of the arrangement frame and extends in the oblique upward direction far away from the arrangement frame.

As an improvement, the run-on plate still includes the mounting panel, mounting panel and run-on angle integrated into one piece, and the mounting panel has the horizontal segment of laminating mutually with the second link and the vertical section of perpendicular to second link, and the run-on angle is connected to the upper end of vertical section, and the horizontal segment is pressed from the top by a second mounting bracket to connect the fixed run-on plate of second mounting bracket and second link through the fastener.

As an improvement, a vertical section is formed between the second connecting frame and the extending frame through bending, the vertical section is respectively vertical to the second connecting frame and the extending frame, and a through hole for mounting and connecting is formed in the vertical section.

As an improvement, the U-shaped structure formed by the arrangement frame is bent at a right angle.

The utility model has the advantages that: when the moving contact and the static contact are switched on, the arc convex wall can move to the arc concave wall to generate the front and back overlapping of the structure, and the space between the arc convex wall and the arc concave wall is sealed; when the switch is switched off, the air current formed at the moving contact and the static contact is blocked by the arc convex wall and cannot flow backwards, so that the air current can flow forwards to the arc extinguish chamber, the better guiding electric arc enters the arc extinguish chamber to complete arc extinction, and the safety of the switch switching off of the dual-power transfer switch is improved.

Drawings

Fig. 1 is the partial three-dimensional structure schematic diagram behind the double power transfer switch hidden shell of the utility model.

Fig. 2 is a schematic perspective view of the moving contact of the present invention.

Fig. 3 is a schematic longitudinal sectional structural view of the moving contact of the present invention.

Fig. 4 is a schematic perspective view of a static contact of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1, 2, 3 and 4, it is a specific embodiment of the contact mechanism of the dual power transfer switch of the present invention. This embodiment includes casing 6, and set up moving contact 1 and static contact 0 in casing 6, moving contact 1 carries out combined floodgate and separating brake through being driven and static contact 0, moving contact 1 sets up on an mounting bracket 2, mounting bracket 2 is provided with an arc convex wall 23 towards the anterior one side below of moving contact 1, casing 6 is provided with an arc concave wall 61 at the rear of static contact 0, when mounting bracket 2 and moving contact 1 move to moving contact 1 and static contact 0 contact, arc convex wall 23 and arc concave wall 61 overlap and block the space behind moving contact 1 and static contact 0.

The utility model discloses when using, the combined floodgate is accomplished through rotary motion to moving contact 1 and the 0 contact of static contact to mounting bracket 2 and moving contact 1, arc protruding wall 23 and arc concave wall 61 can not interfere when rotary motion to accomplish stopping of moving contact 1 and the 0 rear space of static contact, this nimble activity blocks the structure and has replaced the fixed structure of design to block in casing 6, make the part have more empty space and set up, and the degree of difficulty when having reduced casing 6 and part design and assembly. When the switch is switched off, the airflow formed at the moving contact 1 and the static contact 0 is blocked by the arc convex wall 23 and cannot flow backwards, so that the airflow can flow forwards to the arc extinguish chamber 62, the arc is better guided to enter the arc extinguish chamber 62 to complete arc extinction, and the switching-off safety of the dual-power transfer switch is improved.

As a modified embodiment, the arc-shaped convex wall 23 and the arc-shaped concave wall 61 are arcs formed by taking the rotation axes of the mounting bracket 2 and the movable contact 1 as radii.

As shown in fig. 1, 2 and 3, the rotation axes of the mounting frame 2 and the moving contact 1 are taken as the reference, the arc convex wall 23 and the arc concave wall 61 are concentric two-segment arcs, the radius of the arc concave wall 61 is slightly larger than that of the arc convex wall 23, so that the arc convex wall 23 and the arc concave wall 61 do not interfere with each other, after the arc convex wall 23 and the arc concave wall are overlapped, the arc convex wall and the arc concave wall can be blocked in a good space, and the airflow can flow to the direction of the arc extinguish chamber 62 with a larger space.

As a modified embodiment, the quantity of moving contact 1 is a plurality of, mounting bracket 2 sets up the installation cavity 21 that link up around a plurality of, a plurality of moving contact 1 one-to-one holds in installation cavity 21, a plurality of moving contact 1 front portion stretches out installation cavity 21, the rear portion is spacing in mounting bracket 2 through an installation axle 22, installation axle 22 is rotatable to be set up on casing 6, set up an elastic component 5 in the installation cavity 21 and contradict moving contact 1, make moving contact 1 can float and exert the restoring force by elastic component 5 around installation axle 22.

As shown in fig. 1, 2 and 3, a plurality of moving contacts 1 are correspondingly arranged from the front end opening of an installation cavity 21 one by one, the rear through holes of the moving contacts 1 correspond to the through holes on the installation frame 2, then the installation shaft 22 penetrates through the through holes, and then the elastic elements 5 are arranged from the front end of the installation cavity 21 to downwardly collide the moving contacts 1, so that the moving contacts 1 and the installation frame 2 are assembled; install the rotatable installation in casing 6 in installation axle 22 both ends, use installation axle 22 to be rotatory as the axle, can drive mounting bracket 2 and moving contact 1 and carry out circular motion, realize moving contact 1's rotatory divide-shut brake, when moving contact 1 closes the floodgate with the 0 contact of static contact, the rotation angle that mounting bracket 2 provided can make moving contact 1 more abundant press to static contact 0, the compression through elastic component 5 holds power, offer the 1 bigger conflict pressure of moving contact, and then guarantee to close the floodgate more stably.

As a modified embodiment, the upper part of the mounting frame 2 is hinged with a connecting frame 3, the other end of the connecting frame 3 is hinged with a swinging frame 4, and the swinging frame 4 is externally connected with a transmission shaft.

As shown in fig. 1, 2 and 3, the connecting frame 3 and the swing frame 4 form a continuous link structure, and after the connecting frame is externally connected with a transmission shaft, an external opening and closing operation can be transmitted to the mounting frame 2, so as to drive the mounting frame 2 and the moving contact 1 to complete the opening and closing operation. The connecting rod formed by the connecting frame 3 and the swinging frame 4 extends towards the rear of the mounting frame 2, so that the internal space of the shell 6 can be well distributed, reasonable distribution among structures is completed, and good activity space of the mounting frame 2 is ensured; the connecting frame 3 is hinged to the upper portion of the mounting frame 2, good structural restriction can be provided at the upper portion when the moving contact 1 is switched on, the position of the mounting frame 2 is stable after the moving contact 1 is switched on, and the mounting frame 2 is not prone to structural movement under the condition that the whole connecting rod does not move.

As a modified embodiment, the connecting frame 3 includes two sets of vertical frames 31, horizontal frames 32, first rotating shafts 33 and second rotating shafts 34, the vertical frames 31 are left and right, the two sets of vertical frames 31 are connected through the two sets of horizontal frames 32, the first rotating shafts 33 penetrate through the front ends of the vertical frames 31 and simultaneously penetrate through the upper portions of the mounting frames 2, and the second rotating shafts 34 penetrate through the rear ends of the vertical frames 31 and simultaneously penetrate through the swing frames 4.

As shown in fig. 2 and 3, the vertical frames 31 on both sides are well arranged at both ends of the front and rear first rotating shafts 33 and the second rotating shaft 34, and are respectively connected with the mounting frame 2 and the swing frame 4 in a penetrating manner; two sets of crossbearers 32 erect frame 31 to both sides and connect, guarantee structural strength to form fretwork and subtract the material on the whole, be convenient for assemble with front and back mounting bracket 2 and swing span 4, and effectively reduce part cost.

As a modified embodiment, the mounting cavities 21 and the movable contacts 1 are arranged in three groups in parallel.

As shown in fig. 1 and 2, the three groups of moving contacts 1 commonly used by the high-current dual-power transfer switch can meet the switching-on and switching-off requirements, and the three groups of mounting cavities 21 are arranged on the mounting rack 2 at equal intervals to well arrange the moving contacts 1.

As a modified specific embodiment, the elastic element 5 is a spring, a convex column 51 for limiting one end of the spring is arranged on the inner wall of the mounting cavity 21, and a groove 52 for limiting the other end of the spring is arranged on the movable contact 1.

As shown in fig. 3, during assembly, a worker can clamp the upper end of the spring to the convex post 51 in advance, then compress the spring to make the lower end enter the groove 52, and can reset after the lower end of the spring completely enters the groove 52, so that the spring is well limited at the position where the convex post 51 and the groove 52 are limited, and cannot be disengaged, and the moving contact 1 is well limited.

As a modified specific embodiment, the static contact 0 includes a main body support 01 and a contact body 02 disposed on the main body support 01, the main body support 01 includes a second connection frame 013 located in the middle, an extension frame 011 for external connection disposed at both ends of the second connection frame 013, and a placement frame 012 for disposing the contact body 02, the placement frame 012, the second connection frame 013, and the extension frame 011 are integrally formed by metal bending, the placement frame 012 forms a U-shaped reverse bend with respect to the second connection frame 013, the end of the placement frame 012 extends towards the direction of the extension frame 011 and the contact body 02 is disposed on the upper surface.

As shown in fig. 1 and 4, the contact body 02 is opposite to the movable contact 1, and an arc extinguish chamber 62 is disposed at a position corresponding to the contact body 02 and the movable contact 1, the main body support 01 is fitted into the arrangement space in the housing 6 and is limited therein, the extension frame 011 extends outward to the housing 6 for external circuit connection, the arrangement frame 012 forms a U-shaped reverse bend, taking fig. 1 as an example, current flows from bottom to top from the extension frame 011 and the second connection frame 013 to the arrangement frame 012, after the U-shaped reverse bend, a top-to-bottom reverse current is formed at the end, and after closing, the current flows from the contact body 02 to the movable contact 1; the reverse current can generate electrodynamic force which can act on the moving contact 1, when the moving contact is switched on, the switching-on mechanism of the double-power transfer switch limits the movement of the moving contact 1, and the current can be normally conducted and flowed; when the transfer switch is opened, the electrodynamic force acts on the movable contact 1, and the electrodynamic force promotes the movable contact 1 to perform quick opening response, so that the opening and closing conversion efficiency of the dual-power transfer switch is improved.

As a modified specific embodiment, the second connecting frame 013 is further provided with an arc striking plate 04, and the arc striking plate 04 includes an arc striking angle 041, and the arc striking angle 041 is adjacent to the end of the disposing frame 012 and extends in an obliquely upward direction away from the disposing frame 012.

As shown in fig. 1 and 4, the arc striking angle 041 is disposed at an end portion of the rack 012, so that when the contact body 02 and the movable contact 1 are opened to generate an arc, the arc can be smoothly guided to the upper arc-extinguishing chamber 62 by virtue of the structure extending in the obliquely upward direction, thereby completing the arc-extinguishing operation and avoiding the possibility of damage to the device in the housing 1 due to the flowing of the arc. Preferably, the arc striking angle 041 is parallel to and spaced apart from the arc extinguishing plate in the arc extinguishing chamber 62 as shown in fig. 1, so as to provide good arc guidance.

As a modified specific embodiment, the arc striking plate 04 further includes a mounting plate 042, the mounting plate 042 and the arc striking angle 041 are integrally formed, the mounting plate 042 has a horizontal section attached to the second connecting frame 013 and a vertical section perpendicular to the second connecting frame 013, the arc striking angle 041 is connected to the upper end of the vertical section, the horizontal section is pressed from above by a second mounting frame 05, and the second mounting frame 05 and the second connecting frame 013 are connected through a fastener to fix the arc striking plate 04.

As shown in fig. 1 and 4, the mounting plate 042 has the specific structures of the horizontal section and the vertical section, so that on one hand, the horizontal section is mounted on the second connecting frame 013, on the other hand, the vertical section is subjected to good structural extension, the arrangement of the end part of the arc striking angle 041 corresponding to the arrangement frame 012 is performed, and the second mounting frame 05 is used for stably mounting the horizontal section to strengthen the structural strength at the connecting position; a gap space is formed between the vertical section and the arrangement frame 012, and the gap space can be matched and installed corresponding to the convex block in the shell 6.

As a modified specific embodiment, a vertical section 014 is formed between the second connecting rack 013 and the extension rack 011 by bending, the vertical section 014 is perpendicular to the second connecting rack 013 and the extension rack 011 respectively, and the vertical section 014 is provided with a through hole 03 for installation connection.

As shown in fig. 1 and 4, the vertical section 014 is provided with a good folding structure in cooperation with the second connecting frame 013 and the extension frame 011, so that the space of the adapting housing 6 is fitted into the housing 6 to make the arrangement of the stationary contacts 0 more stable, and on the other hand, the vertical section 014 is provided with the through hole 03, and the housing 6 is provided with a space corresponding to the vertical section 014, so that the components can be disposed in the space and assembled with the vertical section 014 through the through hole 03.

As a modified embodiment, the rack 012 is formed into a U-shaped structure that is bent at a right angle.

As shown in fig. 1 and 4, the U-shaped structure is preferably bent at a right angle, so that the processed and formed main body support 01 is more convenient to regularly stack and store, and the shell 6 is also convenient to be arranged corresponding to the cavity of the installation position, i.e. the structure of the square cavity and the inner wall is arranged, thereby facilitating the manufacture of the die and the mutual corresponding installation.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.

Claims

1. The utility model provides a dual supply change over switch's contact mechanism, includes casing (6) and sets up moving contact (1) and static contact (0) in casing (6), moving contact (1) closes a floodgate and separating brake through being driven and static contact (0), its characterized in that: the moving contact (1) is arranged on an installation frame (2), an arc convex wall (23) is arranged below one surface of the installation frame (2) facing the front portion of the moving contact (1), an arc concave wall (61) is arranged behind the static contact (0) of the shell (6), and when the installation frame (2) and the moving contact (1) move to the moving contact (1) and the static contact (0) to be contacted, the arc convex wall (23) and the arc concave wall (61) are overlapped to block the space behind the moving contact (1) and the static contact (0).

2. The contact mechanism of a dual power transfer switch of claim 1, wherein: the arc convex wall (23) and the arc concave wall (61) are arcs formed by taking the rotating axes of the mounting rack (2) and the moving contact (1) as the radius.

3. The contact mechanism of the dual power transfer switch according to claim 1 or 2, wherein: the quantity of moving contact (1) is a plurality of, the installation cavity (21) that link up around a plurality of is seted up in mounting bracket (2), and a plurality of moving contact (1) one-to-one holds in installation cavity (21), and a plurality of moving contact (1) front portion stretches out installation cavity (21), and the rear portion is spacing in mounting bracket (2) through an installation axle (22), installation axle (22) is rotatable to be set up on casing (6), set up an elastic component (5) in installation cavity (21) and contradict moving contact (1), make moving contact (1) can float around installation axle (22) and exert the restoring force by elastic component (5).

4. The contact mechanism of the dual power transfer switch of claim 3, wherein: the upper portion of mounting bracket (2) articulates there is link (3), the other end of link (3) articulates swing span (4), swing span (4) are the external transmission shaft that connects.

5. The contact mechanism of the dual power transfer switch of claim 4, wherein: link (3) are including erecting frame (31), crossbearer (32), first pivot (33) and second pivot (34), erect frame (31) and be two sets of about, two sets of perpendicular frame (31) are connected through two sets of crossbearers (32), the upper portion of erecting the front end of frame (31) and wearing to locate mounting bracket (2) simultaneously is worn to locate in first pivot (33), the rear end of erecting frame (31) is worn to locate in second pivot (34) and is worn to locate on swing span (4) simultaneously.

6. The contact mechanism of the dual power transfer switch of claim 3, wherein: the mounting cavities (21) and the moving contacts (1) are arranged into three groups in parallel.

7. The contact mechanism of the dual power transfer switch of claim 3, wherein: the elastic part (5) is a spring, a convex column (51) used for limiting one end of the spring is arranged on the inner wall of the mounting cavity (21), and a groove (52) used for limiting the other end of the spring is arranged on the moving contact (1).

8. The contact mechanism of the dual power transfer switch according to claim 1 or 2, wherein: static contact (0) include main part support (01) and set up contact body (02) on main part support (01), main part support (01) including second link (013) that are located the middle part, set up respectively in extension frame (011) that is used for external connection at second link (013) both ends and be used for setting up arrangement frame (012) of contact body (02), arrangement frame (012), second link (013) and extension frame (011) are through metal bending integrated into one piece, arrangement frame (012) is the reverse of U-shaped of second link (013) formation relatively, makes arrangement frame (012) tip extend and arrange contact body (02) at the upper surface towards extension frame (011) direction.

9. The contact mechanism of a dual power transfer switch of claim 8, wherein: the second connecting frame (013) is further provided with an arc striking plate (04), the arc striking plate (04) comprises an arc striking angle (041), and the arc striking angle (041) is adjacent to the end part of the arrangement frame (012) and extends in the oblique upward direction far away from the arrangement frame (012).

10. The contact mechanism of a dual power transfer switch of claim 9, wherein: run-on plate (04) still includes mounting panel (042), mounting panel (042) and run-on angle (041) integrated into one piece, mounting panel (042) have the horizontal segment of laminating mutually with second link (013) and the vertical section of perpendicular to second link (013), run-on angle (041) is connected to the upper end of vertical section, the horizontal segment is pressed from the top by a second mounting bracket (05) and is established to fixed run-on plate (04) of second mounting bracket (05) and second link (013) is connected through the fastener.