CN211208373U

CN211208373U - Bridge type contact mechanism of circuit breaker

Info

Publication number: CN211208373U
Application number: CN201922408965.5U
Authority: CN
Inventors: 唐志军; 陶俊
Original assignee: CHANGSHU TONGRUN SWITCHGEAR FACTORY CO LTD
Current assignee: CHANGSHU TONGRUN SWITCHGEAR FACTORY CO LTD
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-08-07
Anticipated expiration: 2029-12-28

Abstract

The utility model discloses a bridge-type contact mechanism of a circuit breaker, which comprises two contact assemblies, an insert bar and a drawer seat bus bar, wherein the two contact assemblies are connected through a clamping plate structure; the clamping plate structure consists of two U-shaped clamping plates which are connected in a mode that the openings are opposite; the contact assembly consists of a plurality of bridge-shaped contacts which are connected in parallel through spring shafts arranged at the upper ends of the bridge-shaped contacts, a mounting groove is formed in the middle of each bridge-shaped contact, and the clamping plate structure is connected with the mounting groove; two ends of the bottom surface of the bridge contact are symmetrically provided with a raised contact; the upper surface and the lower surface of the drawer seat busbar are symmetrically provided with grooves, and the convex surfaces are inserted into the grooves. In this way, the utility model relates to a circuit breaker bridge type contact mechanism, this bridge type contact have increased area of contact, have not only reduced the calorific capacity of contact department, reliability when having improved the contact simultaneously.

Description

Bridge type contact mechanism of circuit breaker

Technical Field

The utility model belongs to the technical field of the low-voltage apparatus technique and specifically relates to a circuit breaker bridge type contact mechanism is related to.

Background

The electrical contact is a leading electrical contact material widely applied to relays, contactors, load switches, medium and low voltage circuit breakers, household appliances, automobile appliances (horns, lamps and ignitors) and other switching appliances, the switching appliances are widely applied to analyzing/closing voltage/current in circuits, the reliability of the switching appliances directly influences the reliable operation of the whole power system, the electrical contact is one of important parts of the switching appliances, and the contact product is a heart part of the products.

The temperature value of a traditional frame circuit breaker busbar temperature rise test is always higher and mainly generated at a plurality of positions of a moving contact, a static contact, a bridge contact, an insertion row and a bridge contact, a drawer seat busbar, the traditional bridge contact adopts side-by-side contact pieces to contact with the busbar, the contact area is limited, and therefore a large amount of heat is generated at the contact position of the bridge contact.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a circuit breaker bridge type contact mechanism, can increase area of contact.

In order to solve the technical problem, the utility model discloses a technical scheme be: a bridge-type contact mechanism of a circuit breaker comprises two contact assemblies, an insert row and a drawer seat bus bar, wherein the two contact assemblies are connected through a clamping plate structure, the two contact assemblies are vertically and symmetrically arranged on two sides of the clamping plate structure, the left side and the right side of each contact assembly form an insert row mounting port and a drawer seat bus bar mounting port respectively, the insert row is mounted in the insert row mounting port, and the drawer seat bus bar is mounted in a required drawer seat bus bar mounting port;

the clamping plate structure consists of two U-shaped clamping plates, the two U-shaped clamping plates are connected in a mode that openings are opposite, the upper end and the lower end of the front side surface and the lower end of the rear side surface of the left U-shaped clamping plate are both provided with a baffle, and the right side surface of the right U-shaped clamping plate is provided with a guide plate;

the contact assembly consists of a plurality of bridge-shaped contacts which are connected in parallel through spring shafts arranged at the upper ends of the bridge-shaped contacts, a mounting groove is formed in the middle of each bridge-shaped contact, and the clamping plate structure is connected with the mounting groove;

the contact points positioned on the two sides of the two contact assemblies are respectively connected with the upper surface and the lower surface of the insertion row and the upper surface and the lower surface of the drawer seat bus bar, and convex surfaces are arranged on the contact points connected with the upper surface and the lower surface of the drawer seat bus bar;

the upper surface and the lower surface of the drawer seat busbar are symmetrically provided with grooves, and the convex surfaces are inserted into the grooves.

In a preferred embodiment of the present invention, the size of the opening of the left U-shaped clamp plate is smaller than the size of the opening of the right U-shaped clamp plate.

In a preferred embodiment of the present invention, the width of the mounting groove matches with the width of the left and right sides of the two U-shaped clamping plates.

In a preferred embodiment of the present invention, the convex surface is matched with the groove.

In a preferred embodiment of the present invention, the guide plate is located at a side where the insertion row is installed.

In a preferred embodiment of the present invention, the width between the two guide plates matches the width of the insertion plate.

In a preferred embodiment of the present invention, two inner corners of the mounting groove contacting with the clamping plate structure are rounded chamfers.

In a preferred embodiment of the present invention, a spring is installed between two adjacent bridge contacts, and both ends of the spring are connected to the spring shaft.

The utility model has the advantages that: the utility model relates to a circuit breaker bridge type contact mechanism, this bridge type contact have increased area of contact, have not only reduced the calorific capacity of contact department, reliability when having improved the contact simultaneously.

Drawings

Fig. 1 is a perspective view of a bridge type contact mechanism for a circuit breaker.

Fig. 2 is a schematic diagram of the connection of a contact assembly and a clamp structure of a bridge type contact mechanism of a circuit breaker.

Fig. 3 is an enlarged view of the contact position of the groove and the convex surface of the bridge type contact mechanism of the circuit breaker.

Figure 4 is a right side view cross-sectional view of a circuit breaker bridge contact mechanism contact assembly and clamp plate arrangement.

The parts in the drawings are numbered as follows: 1. inserting the rows; 2. a drawer seat bus bar; 3. a U-shaped splint; 4. a baffle plate; 5. a guide plate; 6. mounting grooves; 7. chamfering with an arc; 8. a contact; 9. a convex surface; 10. a groove; 11. a bridge type contact; 12. a spring; 13. a spring shaft.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 1 to 4, a bridge contact 11 mechanism of a circuit breaker includes two contact assemblies, an insertion row 1 and a drawer base bus bar 2, the two contact assemblies are connected by a clamping plate structure, the two contact assemblies are disposed on two sides of the clamping plate structure in a vertically symmetrical manner, a insertion row mounting port and a drawer base bus bar mounting port are respectively formed on the left and right sides of the two contact assemblies, the insert bar 1 is arranged in the insert bar mounting port, the drawer seat bus bar 2 is arranged in the drawer seat bus bar mounting port, the clamping plate structure is used for connecting two contact assemblies, the positions of the drawer seat bus bar 2 and the drawer seat bus bar mounting port are fixed and do not move any more, the inserting row 1 is clamped, the inserting row 1 can act along with the swinging in and swinging out of the drawer seat, and when the inserting row 1 is inserted into the inserting row installing port, the circuit is connected with power supply.

The splint structure comprises two U type splint 3, two U type splint 3 are connected with the relative mode of opening, and the left side the opening size of U type splint 3 is less than the right side the opening size of U type splint 3, the width and two of mounting groove 6 the width of side cooperatees about U type splint 3, makes two from top to bottom the contact subassembly with splint structural connection's is inseparabler.

The left side baffle 4 is all installed to the upper and lower extreme of U type splint 3 front and back side, baffle 4 is used for a plurality of bridge type contact 11 blocks, prevents bridge type contact 11 from both sides with the splint structure breaks away from.

The right side deflector 5 is installed to the right flank of U type splint 3, deflector 5 is located the installation insert 1 one side of arranging, two width between deflector 5 with the width that inserts the board cooperatees, deflector 5 is used for insert 1 inserts more accurately when arranging the installing port, played the effect of location.

The contact assembly is composed of a plurality of bridge-type contacts 11, the bridge-type contacts 11 are connected in parallel through spring shafts 13 arranged at the upper ends, springs 12 are arranged between every two adjacent bridge-type contacts 11, two ends of each spring 12 are connected to the corresponding spring shaft 13, the springs 12 enable the sides of the two adjacent bridge-type contacts 11 to cling to the springs 12, and when the springs 12 swing in, the insertion row 1 enters the insertion row installation opening, so that the right sides of the bridge-type contacts 11 are unfolded, the left sides of the bridge-type contacts 11 are tightened under the action of the springs 12 and a lever principle, the grooves 10 and the convex surfaces 9 are tightly attached, and the contact is guaranteed to have strong reliability.

Be equipped with mounting groove 6 in the middle of bridge type contact 11, the splint structure with mounting groove 6 is connected, with the splint structure contacts two interior angles of mounting groove 6 are circular arc chamfer 7, make insert row 1 and get into when inserting row installing port, the contact subassembly can the structural rotation of splint.

The contact assembly is characterized in that two ends of the bottom surface of the bridge-type contact 11 are symmetrically provided with a convex contact 8, the contact 8 is positioned on two sides of the contact assembly and is respectively connected with the upper surface and the lower surface of the insertion row 1 and the upper surface and the lower surface of the female row 2 of the drawer seat, a convex surface 9 is arranged on the contact 8 connected with the upper surface and the lower surface of the female row 2 of the drawer seat, a groove 10 is symmetrically arranged on the upper surface and the lower surface of the female row 2 of the drawer seat, the convex surface 9 is inserted into the groove 10, the convex surface 9 is matched with the groove 10, and when the contact is shaken out, the convex surface 9 is still in contact with the groove 10, compared with the single-side contact of the insertion row 1, the female row 2 of the drawer seat adopts double-side contact, the contact area is.

Compared with the prior art, the utility model relates to a circuit breaker bridge type contact mechanism, this bridge type contact have increased area of contact, have not only reduced the calorific capacity of contact department, reliability when having improved the contact simultaneously.

In the description of the present invention, it should be noted that all the components are general standard components or components known to those skilled in the art, the structure and principle thereof are all known to those skilled in the art through technical manuals or through conventional testing methods, and the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the positions or positional relationships based on the drawings, or the positions or positional relationships that the products of the present invention are usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated devices or elements must have specific positions, be constructed and operated in specific positions, and thus, cannot be understood as limitations of the present invention.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A bridge-type contact mechanism of a circuit breaker is characterized by comprising two contact assemblies, an insert row and a drawer seat bus bar, wherein the two contact assemblies are connected through a clamping plate structure, the two contact assemblies are placed on two sides of the clamping plate structure in an up-down symmetrical mode, an insert row mounting port and a drawer seat bus bar mounting port are formed in the left side and the right side of each of the two contact assemblies respectively, the insert row is mounted in the insert row mounting port, and the drawer seat bus bar is mounted in the required drawer seat bus bar mounting port;

2. The bridge contact mechanism for circuit breakers of claim 1 wherein the size of the opening of said clevis on the left side is smaller than the size of the opening of said clevis on the right side.

3. The bridge contact mechanism as claimed in claim 1, wherein the width of the mounting slot matches the width of the left and right sides of the U-shaped clamping plates.

4. A circuit breaker bridge contact mechanism as claimed in claim 1, wherein the convex surface cooperates with the recess.

5. The bridge contact mechanism for circuit breakers of claim 1 wherein said guide plate is located on the side where said interposer bank is mounted.

6. The bridge contact mechanism for circuit breakers of claim 1 wherein the width between said guide plates matches the width of said interposer web.

7. The bridge contact mechanism for circuit breakers of claim 1 wherein the two interior corners of said mounting slot that contact said jaw structure are rounded chamfers.

8. The bridge contact mechanism for circuit breakers of claim 1 wherein a spring is mounted between adjacent ones of said bridge contacts, said spring having ends connected to said spring shaft.