CN204332855U - Terminal block for a circuit breaker - Google Patents

Abstract

A kind of binding post of circuit breaker, it comprises dynamic binding post (1) and quiet binding post (2), dynamic binding post (1) and quiet binding post (2) patch, described quiet binding post (2) comprises mounting bracket (3), mounting bracket (3) is arranged side by side some sockets (4), described dynamic binding post (1) comprises erection support (6), erection support (6) is installed on fixed support (7), the plug (8) corresponding with socket (4) is arranged side by side in erection support (6), it is characterized in that: described mounting bracket (3) side is provided with positioning and guiding groove (301), erection support (6) side is provided with directed lead (601), directed lead (601) can be slided along directed gathering sill (301), twice location during this binding post patched with quiet binding post by dynamic binding post, improve the guide-localization precision in the process of patching, simultaneously by the improvement to plug and socket structure, improve the reliability and stability that binding post patches, whole binding post simplifies solution structure, easy installation and maintenance.

Description

Terminal block for a circuit breaker

technical field

The utility model belongs to the technical field of low-voltage electrical appliances, and in particular relates to a connection terminal of a circuit breaker.

Background technique

Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breaker, also known as automatic switch, commonly known as "air switch", also refers to low-voltage circuit breaker. It is an electrical appliance that not only has the function of manual switch, but also can automatically protect against voltage loss, undervoltage, overload, and short circuit. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, etc., and can automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to a fuse switch and The combination of overheating and underheating relays, etc., and generally does not need to change parts after breaking the fault current, has been widely used.

Circuit breakers have a variety of structures according to their performance requirements. Among them, the withdrawable frame circuit breaker is a relatively common structure used in the low-voltage electrical industry, which includes two parts: a drawer seat and a circuit breaker body. The line on the drawer base is connected to the main circuit, and the line on the circuit breaker body is connected to the external circuit. In order to connect the main circuit and the external circuit. A general drawer-type circuit breaker includes two parts: a moving terminal and a static terminal. The moving terminal is installed on the circuit breaker body and connected to the internal circuit; the static terminal is installed on the drawer seat and connected to the external circuit to meet the needs of the user. wiring. The connection of the entire circuit is completed through the connection of the moving terminal and the static terminal, and the circuit formed by the connection of the moving terminal and the static terminal becomes the secondary circuit. With the continuous enhancement of the function of the circuit breaker, the requirement for the number of terminals is increasing. At the same time, the number of terminal components on the circuit breaker is increasing, and the requirements for accuracy and reliability are also getting higher and higher. However, in the existing secondary terminals, the connection of the secondary circuit is realized through the connection of the metal needle at the lower end of the static terminal and the plug-type connecting hole on the movable terminal. During the connection process, due to insufficient guiding precision, misalignment and metal pin deformation often occur, resulting in unstable contact, and the increasing number of terminal blocks increases the volume, and the one-piece structure is not interchangeable. Cause installation and maintenance complicated.

Chinese patent 201310351090.4 discloses a connection terminal of a circuit breaker, including a static terminal and a moving terminal. The static terminal includes a base, a contact housing, a metal contact and a metal spring. The movable terminal includes a base, a plug-in post and a metal sheet, the base and the plug-in post are integrally formed, and the metal sheet is fixed on both sides of the plug-in post; the base is integrally formed , There is a row of vacant ribs on the base, the contact shell is installed between the two vacant ribs, and the adjacent contact shells are connected by the overlapping columns and the overlapping holes on both sides of the contact shells. The mating phase is connected; the contact piece shell is also provided with a plugging slot, and the moving terminal and the static terminal are electrically connected through the mating phase of the plugging column and the plugging slot. The connecting terminal improves the guiding reliability of the movable terminal and the static terminal, but the insertion stability of the movable terminal and the static terminal is not enough, which easily leads to poor contact.

Utility model content

The purpose of this utility model is to provide a circuit breaker terminal for the technical defect of insufficient insertion stability of the existing circuit breaker terminal, which enhances the insertion guide precision between the dynamic terminal and the static terminal, and improves It improves the reliability of the contact of the circuit breaker terminals and reduces the difficulty of installation and maintenance.

Technical solutions

In order to achieve the above-mentioned technical purpose, the utility model designs a connection terminal of a circuit breaker, which includes a dynamic connection terminal and a static connection terminal, and the dynamic connection terminal and the static connection terminal are plugged in. Several sockets are arranged side by side, and the bottom end of the mounting bracket is equipped with slats. The movable terminal includes a mounting support, which is fixedly mounted on the fixed support, and plugs corresponding to the sockets are arranged side by side in the mounting support. In that: the side of the installation bracket is provided with a positioning guide groove, the side of the installation support is provided with a directional guide column, and the directional guide column can slide along the directional guide groove;

The socket includes a socket housing, the socket housing is equipped with a first conductive rod and a second conductive rod, and the terminals of the first conductive rod and the second conductive rod are equipotential terminals, respectively connected with the first clamping wire The spring sheet and the second clamping spring sheet, the plug ends of the first conductive rod and the second conductive rod are horizontally parallel to each other to form a plug-in track, and a plug-in guide rod is arranged in the plug-in track, and the plug-in guide rod is installed on the plug-in rail. inside the shell;

The plug includes a plug housing, and a third conductive rod and a fourth conductive rod are installed in the plug housing, and the third conductive rod and the fourth conductive rod are respectively connected to the third clamping spring piece and the fourth clamping spring piece. The socket ends of the third conductive rod and the fourth conductive rod are horizontally fixed to each other in the plug housing to form a plug guide groove, and the socket guide rod cooperates with the plug guide groove to form a socket guide and positioning.

Further, the mounting bracket is provided with a row of vacant ribs, the socket is installed between the two vacant ribs, and the adjacent sockets are connected through the overlapping surface arranged on the side of the socket housing and the track. After the mounting bracket A bracket block is provided above the wall vacancy rib, a bracket bayonet is provided on the lower wall, a socket bayonet is provided on the top of the socket housing, a socket hook is provided at the lower end, and a limit rib is provided on the socket housing It is used to be fixed between two adjacent vacant ribs of the installation bracket. The top end is fixed by the socket bayonet and the bracket block, and the lower wall is fixed by the socket hook and the bracket bayonet.

Further, the middle wall of the installation support is provided with a row of support guide grooves, the upper end of the lower wall is provided with a support groove, and the bottom end of the lower wall of the installation support is provided with a support bayonet and a limiting waist-shaped boss. The plug housing is provided with a plug guide column, and the plug housing is fixed in the guide groove of the support through the plug guide column. The lower end of the plug housing is provided with a plug buckle, and the plug buckle is installed in the support bayonet on the installation support. The lower surface of the plug housing is provided with a limiting boss, and the limiting boss is installed in the limiting groove on the mounting support.

Further, the third conductive rod and the fourth conductive rod are respectively provided with arc-shaped protrusions outward, and the plug housing is provided with notches corresponding to the arc-shaped protrusions.

Further, the socket housing is provided with a wiring limiting boss, which can withstand the terminals of the first conductive rod and the second conductive rod, and the socket housing is also provided with a V-shaped groove. The terminals of the first conductive rod and the second conductive rod are U-shaped structures, and are respectively connected with the first wire clamping spring piece and the second wire clamping spring piece.

Further, a hasp is provided on the slat, and the hasp is mounted on the bayonet of the mounting bracket.

Beneficial effect

The wiring terminal of the circuit breaker provided by the utility model improves the guiding and positioning accuracy in the process of connecting and inserting the moving wiring terminal and the static wiring terminal through two positionings during the insertion process of the moving wiring terminal and the static wiring terminal. The improvement of the structure of the plug and the socket improves the reliability and stability of the connection terminal, and the whole connection terminal simplifies the understanding of the structure, and is easy to install and maintain.

Description of drawings

Accompanying drawing 1 is product figure of the present utility model.

Accompanying drawing 2 is the schematic diagram of the structure of the static terminal in the utility model.

Accompanying drawing 3 is the schematic diagram of lath structure in the utility model.

Accompanying drawing 4 is the structure schematic diagram of the utility model middle moving connection terminal.

Accompanying drawing 5 is the structural diagram of the top view direction of the moving terminal of the utility model.

Accompanying drawing 6 is the schematic diagram of socket structure in the utility model.

Accompanying drawing 7 is the structural diagram of socket front view direction in the utility model.

Accompanying drawing 8 is the structural diagram of socket shell direction in the utility model.

Accompanying drawing 9 is a schematic diagram of the front view direction structure of the socket housing in the utility model.

Accompanying drawing 10 is the structural diagram of plug direction in the utility model.

Accompanying drawing 11 is the structural schematic view of the front view direction of the plug in the utility model.

Accompanying drawing 12 is the schematic diagram of the structure of the plug housing in the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail.

Example

As shown in accompanying drawings 1 to 5, a connection terminal of a circuit breaker includes a moving connection terminal 1 and a static connection terminal 2, the moving connection terminal 1 and the static connection terminal 2 are plugged in, and the static connection terminal 2 includes a mounting bracket 3. Several sockets 4 are arranged side by side on the mounting bracket 3, and the bottom end of the mounting bracket 3 is equipped with a slat 5. The moving terminal 1 includes a mounting support 6, and the mounting support 6 is fixed on the fixed support 7. The mounting support The plug 8 corresponding to the socket 4 is arranged side by side in the seat 6, wherein, the side of the mounting bracket 3 is provided with a positioning guide groove 301, and the side of the mounting support 6 is provided with a directional guide post 601, and the directional guide post 601 can be positioned along the directional guide groove. 301 sliding to form the initial positioning of the plug;

As shown in accompanying drawings 6-9, the socket 4 includes a socket housing 401, the socket housing 401 is equipped with a first conductive rod 401a and a second conductive rod 401b, and the first conductive rod 401a and the second conductive rod 401b The terminal is the equipotential terminal, respectively connected with the first clamping spring piece 401c, 401c' and the second clamping spring piece 401d, 401d', the connecting end of the first conductive rod 401a and the second conductive rod 401b are horizontal Connecting rails 401e are formed parallel to each other, and plugging guide rods 401f are arranged in the plugging rails 401e, and the plugging guide rods 401f are installed in the socket housing 401;

As shown in Figures 10-12, the plug 8 includes a plug housing 801, the plug housing 801 is equipped with a third conductive rod 801a and a fourth conductive rod 801b, and the third conductive rod 801a and the fourth conductive rod 801b correspond to Connect the third clamping spring piece 801c and the fourth clamping spring piece 801d, and the socket ends of the third conductive rod 801a and the fourth conductive rod 801b are fixed horizontally to each other in the plug housing 801 to form a plug guide groove 801e. The guide rod 401f cooperates with the plug guide groove 801e to form a secondary precise guide and positioning of the plug.

Specifically, the mounting bracket 3 is provided with a row of vacant ribs 301a, the socket 4 is installed between the two vacant ribs 301a, and the adjacent sockets 4 pass through the overlapping surface 401g and the track provided on the side of the socket housing 401. 401h are matched and connected to form a closed track, which meets the electrical performance. The bracket block 301b is provided above the space bar 301a on the rear wall of the installation bracket 3, the bracket bayonet 301c is provided on the lower wall, and the top of the socket housing 401 is provided with The socket bayonet 401i is provided with a socket hook 401j at the lower end, and the socket housing 401 is provided with a limiting rib 401k for fixing between two adjacent vacant ribs 301a of the mounting bracket 3, and the top end is connected to the socket bayonet 401i. The bracket block 301b is fixed in cooperation, and the lower wall is fixed in cooperation with the bracket bayonet 301c through the socket hook 401j.

The middle wall of the installation support 6 is provided with a row of support guide grooves 602, the upper end of the lower wall is provided with a support groove 603, and the bottom end of the lower wall of the installation support 6 is provided with a support bayonet 604 and a limiting waist-shaped boss 605, the plug housing 801 is provided with a plug guide column 801f, the plug housing 801 is fixed in the support guide groove 602 through the plug guide column 801f, the lower end of the plug housing 801 is provided with a plug buckle 801g, and the plug buckle 801g Installed in the bracket bayonet 604 on the installation support 6 , the lower surface of the plug housing 801 is provided with a limiting boss 801h, and the limiting boss 801h is installed in the limiting groove 605 on the installation support 6 .

The third conductive rod 801a and the fourth conductive rod 801b are respectively provided with arc-shaped protrusions 801i outward, and the plug housing 801 is provided with notches 801j corresponding to the arc-shaped protrusions 801i.

The socket housing 801 is provided with a wiring limiting boss 801k, the wiring limiting boss 801k can withstand the terminals of the first conductive rod 401a and the second conductive rod 401b, and the socket housing 801 is also provided with a V-shaped groove 801l, the terminals of the first conductive rod 401a and the second conductive rod 401b are in a U-shaped structure, and the four end points are respectively connected to the first wire clamping spring pieces 401c, 401c' and the second wire clamping spring pieces 401d, 401d' Meet the equipotential wiring requirements.

The slat 5 is provided with a buckle 501, and the buckle 501 is installed on the bayonet 301d of the mounting bracket 3 to form a buckle connection.

Claims (6)

1. A connection terminal of a circuit breaker, which comprises a moving connection terminal (1) and a static connection terminal (2), the moving connection terminal (1) and the static connection terminal (2) are inserted, and the static connection terminal (2) It includes a mounting bracket (3), a plurality of sockets (4) are arranged side by side on the mounting bracket (3), a slat (5) is installed at the bottom of the mounting bracket (3), and the moving terminal (1) includes a mounting bracket ( 6), the mounting support (6) is fixedly installed on the fixed support (7), and the plug (8) corresponding to the socket (4) is arranged side by side in the mounting support (6), and it is characterized in that: the mounting support ( 3) A positioning guide groove (301) is provided on the side, and a directional guide column (601) is provided on the side of the mounting support (6), and the directional guide column (601) can slide along the directional guide groove (301); The socket (4) includes a socket housing (401), a first conductive rod (401a) and a second conductive rod (401b) are housed in the socket housing (401), and the first conductive rod (401a) and the second The terminal of the conductive rod (401b) is an equipotential terminal, which is respectively connected with the first clamping spring piece (401c, 401c') and the second clamping spring piece (401d, 401d'), and the first conductive rod (401a) The plug-in ends of the second conductive rod (401b) are horizontally parallel to form a plug-in track (401e), and the plug-in track (401e) is provided with a plug-in guide rod (401f), and the plug-in guide rod (401f) is installed in the socket Inside the housing (401); The plug (8) includes a plug housing (801), the third conductive rod (801a) and the fourth conductive rod (801b) are housed in the plug housing (801), and the third conductive rod (801a) and the fourth conductive rod (801b) are respectively correspondingly connected to the third clamping spring piece (801c,) and the fourth clamping spring piece (801d), and the plug ends of the third conductive rod (801a) and the fourth conductive rod (801b) are horizontally fixed on each other. A plug guide groove (801e) is formed in the plug housing (801), and a plug guide rod (401f) cooperates with the plug guide groove (801e) to form a plug guide positioning. 2. A circuit breaker terminal according to claim 1, characterized in that: the mounting bracket (3) is provided with a row of vacant ribs (301a), and the socket (4) is installed on two vacant ribs (301a) ), the adjacent sockets (4) are connected through the overlapping surface (401g) and the track (401h) arranged on the side of the socket housing (401), and the vacant ribs on the rear wall of the mounting bracket (3) (301a) is provided with a bracket block (301b), the lower wall is provided with a bracket bayonet (301c), the top of the socket housing (401) is provided with a socket bayonet (401i), and the lower end is provided with a socket hook (401j), the socket housing (401) is provided with a limiting rib (401k) for fixing between two adjacent vacant ribs (301a) of the mounting bracket (3), and the top end passes through the socket bayonet (401i) It is fixed in cooperation with the bracket block (301b), and the lower wall is fixed in cooperation with the bracket bayonet (301c) through the socket hook (401j). 3. A circuit breaker terminal according to claim 1, characterized in that: the middle wall of the mounting support (6) is provided with a row of support guide grooves (602), and the upper end of the lower wall is provided with a support recess. Groove (603), the bottom end of the lower wall of the mounting support (6) is provided with a support bayonet (604) and a limiting waist-shaped boss (605), and the plug housing (801) is provided with a plug guide post ( 801f), the plug housing (801) is fixed in the support guide groove (602) through the plug guide column (801f), the plug housing (801) is provided with a plug buckle (801g) at the lower end, and the plug buckle (801g) is installed In the support bayonet (604) on the mounting support (6), the lower surface of the plug housing (801) is provided with a limit boss (801h), and the limit boss (801h) is installed on the mounting support (6) Inside the limit groove (606) on the top. 4. The connection terminal of a circuit breaker according to claim 1, characterized in that: the third conductive rod (801a) and the fourth conductive rod (801b) are respectively provided with arc-shaped protrusions (801i) outwards , the plug housing (801) is provided with a notch (801j) corresponding to the arc-shaped protrusion (801i). 5. The wiring terminal of a circuit breaker according to claim 1, characterized in that: the socket housing (801) is provided with a wiring limiting boss (801k), and the wiring limiting boss (801k) can Against the terminals of the first conductive rod (401a) and the second conductive rod (401b), a V-shaped groove (801l) is also provided on the socket housing (801), and the first conductive rod (401a) and the second conductive rod The terminal of the rod (401b) has a U-shaped structure, and the four end points are respectively connected with the first tension spring piece (401c, 401c') and the second tension spring piece (401d, 401d'). 6. A circuit breaker terminal according to claim 1, characterized in that: said slat (5) is provided with a hasp (501), and the hasp (501) is mounted on the mounting bracket (3) on the bayonet (301d).