CN220753336U

CN220753336U - Secondary wiring terminal structure of circuit breaker

Info

Publication number: CN220753336U
Application number: CN202322368592.XU
Authority: CN
Inventors: 毛振风; 周敏琛; 俞晓峰
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-04-09
Anticipated expiration: 2033-09-01

Abstract

A secondary wiring terminal structure of a circuit breaker belongs to the technical field of connectors of low-voltage electrical appliances. The circuit breaker include the circuit breaker casing and install the face guard at circuit breaker casing front side, secondary binding post structure include mounting panel and secondary connector assembly, the mounting panel is installed on the circuit breaker casing and be located the top of face guard, secondary connector assembly installs on the mounting panel, this secondary connector assembly includes support, upper terminal and lower terminal, the support with the mounting panel is fixed, upper terminal and lower terminal installation location are in on the support, and upper terminal is located the outside of face guard, and lower terminal is located the inboard of face guard. The advantages are that: the secondary wiring is convenient for users, the occupation of the accessory cavity space of the shell of the circuit breaker is avoided, the requirement of quick assembly disassembly according to needs is met, the structure is simplified, the volume is reduced, and the economy is reflected due to low manufacturing cost.

Description

Secondary wiring terminal structure of circuit breaker

Technical Field

The utility model belongs to the technical field of connectors of piezoelectric devices, and particularly relates to a secondary wiring terminal structure of a circuit breaker.

Background

The circuit breaker mentioned above is a low-voltage circuit breaker (also called an air switch), and is widely used in low-voltage distribution systems, and in terms of its electrical properties, it is a switching device capable of closing, carrying and breaking a current under normal loop conditions and of closing, carrying and breaking a current under abnormal loop conditions (conventionally called "fault current") within a prescribed time, and plays a role in breaking a power supply and guaranteeing safety of electric circuits and electric appliances in a power supply and distribution network. More specifically, the circuit breaker can timely find out potential safety hazards such as overtemperature, overload, short circuit, grounding and the like and act quickly, so that safety guarantee can be provided for a circuit, and a user can use electric energy in a safe electricity utilization environment.

The above-mentioned secondary connector is an important accessory of the circuit breaker, and mainly serves as an important and indispensable task for connecting the internal circuit of the low-voltage circuit breaker with the external circuit of the user. In addition, in order to meet the actual use demands of the market, the functions of the circuit breaker are correspondingly increased, for example, various accessories are equipped inside the circuit breaker, such as a shunt release, an under-voltage release, an alarm contact, an auxiliary contact, a closing electromagnet, an electric operating mechanism and the like. The connection modes of the accessories mainly comprise the following two types: firstly, directly leading out a line from an accessory and connecting the line to a user side, wherein the wiring mode has the advantage of low part cost, but when the line is numerous, namely the number of wires is large, the recognition is confused, and the look is lost; and secondly, a mode of independent wiring terminals is adopted for wiring by a user, and the mode has the advantages of convenience and rapidness, but has relatively high cost and large occupied space for an accessory cavity of the shell due to complex internal fixing structure. Undoubtedly, with the increasing enrichment of accessory functions of circuit breakers, given that the space available for installing the connection terminals of new accessories in the accessory cavity of the casing of the circuit breaker has tended to be saturated from the front view, the technical solutions to be described below are produced in this context, which have positive significance for exploring how to use the circuit breaker as a carrier to meet the installation requirements of the secondary connection terminals of the accessories of the new functions and which can be helpful for reducing costs, reducing volumes and simplifying structures.

Disclosure of Invention

The utility model aims to provide a secondary wiring terminal structure of a circuit breaker, which is convenient for a user to carry out secondary wiring, is beneficial to avoiding occupation of an accessory cavity space of a shell of the circuit breaker, is beneficial to meeting the requirement of quick assembly and disassembly once a terminal strip plug or socket part is damaged, and is beneficial to remarkably reducing the volume, simplifying the structure and embodying the economy.

The object of the utility model is achieved by a secondary terminal structure for a circuit breaker comprising a circuit breaker housing and a visor mounted on the front side of the circuit breaker housing, the secondary terminal structure comprising a mounting plate mounted on the circuit breaker housing and located on top of the visor and a secondary connector assembly mounted on the mounting plate, the secondary connector assembly comprising a bracket, an upper terminal and a lower terminal, the bracket being fixed to the mounting plate, the upper terminal and the lower terminal being mounted and positioned on the bracket with the upper terminal located on the outside of the visor and the lower terminal located on the inside of the visor.

In a specific embodiment of the utility model, the circuit breaker further comprises a mounting bracket having a rear end secured to the circuit breaker housing and a front end secured to the mounting plate.

In another specific embodiment of the present utility model, the mounting plate is formed with a mortise at a spaced state toward one side of the circuit breaker case, and a mortise is formed on the circuit breaker case and at a position corresponding to the mortise, the mortise and the mortise being mortise-and-tenon engaged with each other; a support arm is formed at the upper part of the front end of the mounting bracket, and the mounting plate is supported on the support arm towards one side of the mask and is fixed with the support arm.

In yet another specific embodiment of the utility model, a mask opening is formed in the top of the mask and an outer rim is formed on the mounting plate that mates with the mask opening.

In still another specific embodiment of the present utility model, a secondary connector assembly mounting groove penetrating through the thickness direction of the mounting plate is formed in the mounting plate, a step edge is formed at the peripheral edge portion of the secondary connector assembly mounting groove, the secondary connector assembly is matched with the secondary connector assembly mounting groove, and the bracket is supported on the step edge.

In still another specific embodiment of the present utility model, the number of the secondary connector assembly mounting grooves is two, which are separated from each other and have the same structure, and one of the secondary connector assemblies is allocated to a position corresponding to each secondary connector assembly mounting groove.

In a further specific embodiment of the present utility model, a mating groove is formed in a middle portion of the bracket in a length direction, a lower terminal insert is formed in an upper portion of the lower terminal in the length direction, an upper terminal insert cavity is formed in the middle portion of the lower terminal insert in the length direction, an upper terminal insert is extended in a lower portion of the upper terminal in the length direction, the lower terminal insert is inserted into the mating groove from bottom to top, and the upper terminal insert is inserted into the upper terminal insert cavity from top to bottom.

In a further specific embodiment of the present utility model, a clamping ear is respectively extended downwards on the bracket and located at the left end and the right end of the matching groove, and a lower terminal positioning boss embedding hole is formed on the clamping ear; and a lower terminal positioning boss protruding from the left end face and the right end face of the lower terminal insert body is respectively formed at the left end and the right end of the lower terminal insert body and at positions corresponding to the embedding holes of the lower terminal positioning boss, and the lower terminal positioning boss is embedded into the embedding holes of the lower terminal positioning boss.

In a still more specific embodiment of the present utility model, a positioning hole is formed in the bracket at the position corresponding to the left end and the right end of the mating groove, a mounting hole is formed in the step edge at the position corresponding to the positioning hole, and the bracket is fixed to the step edge at the position corresponding to the positioning hole and the mounting hole by a fastener.

In still another specific embodiment of the present utility model, an upper terminal end face boss protruding outwards is formed on the left end face and the right end face of the upper terminal, a guiding head extends from a downward side of the upper terminal end face boss, a guiding hole is formed on the lower terminal positioning boss, and the guiding head is inserted into the guiding hole.

According to the technical scheme provided by the utility model, the mounting plate is arranged on the circuit breaker shell and is positioned at the top of the face shield, and the secondary connector assembly consisting of the support, the upper terminal and the lower terminal is arranged on the mounting plate, and the upper terminal is positioned at the outer side of the face shield, and the lower terminal is positioned at the inner side of the face shield, so that the secondary wiring is convenient for a user, occupation of an accessory cavity space of the circuit breaker shell can be avoided, the requirement of quick assembly and disassembly according to needs can be met, the structure is simplified, the volume is reduced, and the economy is reflected due to low manufacturing cost.

Drawings

FIG. 1 is a schematic representation of an embodiment of the present utility model;

FIG. 2 is a schematic illustration of the mask of FIG. 1 with the mask removed;

FIG. 3 is a schematic illustration of the mating of a secondary connector assembly with a mounting plate;

FIG. 4 is a perspective exploded view of FIG. 3;

fig. 5 is an exploded perspective view of the secondary connector assembly of fig. 1-4.

Detailed Description

In order that the technical spirit and advantages of the present utility model may be more clearly understood, reference will now be made in detail to the following examples, which are not intended to limit the scope of the utility model, but rather are merely equivalent in form to the present utility model.

In the following description, all concepts related to the directions or azimuths of up, down, left, right, front and rear are taken as examples of the position state of fig. 1, for example, the front side of the mask 200, i.e. the side facing outward in the use state, is the front side, and so on, and thus, the present utility model is not to be construed as being limited in particular.

Referring to fig. 1 to 5, the circuit breaker, which shows the structural system of the circuit breaker, includes a circuit breaker housing 100 and a cover 200 installed at the front side of the circuit breaker housing 100, a contact system, which is not shown in the drawings, is installed inside the circuit breaker housing 100 according to the general knowledge, and an operating mechanism, which is also not shown in the drawings, is installed at the outer side of the circuit breaker housing 100, and the operating mechanism drives the contact system to perform a combined operation. Since the mask 200 covers the front side of the housing 100, the aforementioned operating mechanism is blocked by it. A mounting board 1 and a secondary connector assembly 2 of a secondary connection terminal structure are shown, the mounting board 1 is mounted on the circuit breaker housing 100 and is located at the top of the face shield 200, the secondary connector assembly 2 is mounted on the mounting board 1, the secondary connector assembly 2 includes a bracket 21, an upper terminal 22 and a lower terminal 23, the bracket 21 is fixed with the mounting board 1, the upper terminal 22 and the lower terminal 23 are mounted and positioned on the bracket 21, and the upper terminal 22 is located at the outer side of the face shield 200, and the lower terminal 23 is located at the inner side of the face shield 200. The upper terminal 22 is used for external wiring of the circuit breaker, and the lower terminal 23 is used for internal wiring of the circuit breaker.

As shown in fig. 1 and 2, the circuit breaker further includes a mounting bracket 300, one end, i.e., a rear end, of the mounting bracket 300 is fixed to the circuit breaker housing 100, and the other end, i.e., a front end, of the mounting bracket 300 is fixed to the mounting plate 1.

The mounting plate 1 is formed with a tenon 12 (may be referred to as a "socket boss") at a spaced state toward one side of the breaker case 100, and a mortise 101 (may be referred to as a "pit") is formed on the breaker case 100 at a position corresponding to the tenon 12, and the tenon 12 and the mortise 101 are mortise-tenon engaged with each other; a support arm 301 is formed at the upper portion of the front end of the mounting bracket 300, and the mounting plate 1 is supported by the support arm 301 toward the mask 200 side and is fixed to the support arm 301 having a screw hole.

A mask opening is formed in the top of the mask 200, and an outer edge 13 is formed on the mounting plate 1, and the outer edge 13 is matched with the mask opening. That is, the aforementioned mounting plate 1 is mounted on the circuit breaker housing 100 and is located on the opening of the face mask 200, and closes the aforementioned opening.

Referring to fig. 4, the mounting plate 1 is provided with a rectangular secondary connector assembly mounting groove 11 (also simply referred to as "mounting groove") extending through the mounting plate 1 in the thickness direction thereof, i.e., extending from the upper surface to the lower surface of the mounting plate 1, and a step edge 111 is formed at the peripheral edge portion of the secondary connector assembly mounting groove 11, the secondary connector assembly 2 is fitted to the secondary connector assembly mounting groove 11, and the bracket 21 is supported by the step edge 111.

In the present embodiment, the number of the aforementioned secondary connector assembly mounting grooves 11 is two, which are separated from each other and have the same structure, and one of the aforementioned secondary connector assemblies 2 is allocated corresponding to the position of each secondary connector assembly mounting groove 11. With this arrangement, the number of interfaces of the secondary connector assembly 2 can be greatly increased, so that the size can be reduced (the volume can be reduced) and the miniaturization of the circuit breaker can be facilitated.

Referring to fig. 5, a mating groove 211 is formed in a middle portion of the bracket 21 in a longitudinal direction, a lower terminal insert 232 is formed at an upper portion of the lower terminal 23 in the longitudinal direction, an upper terminal insert cavity 2321 is formed at a middle portion of the lower terminal insert 232 in the longitudinal direction, an upper terminal insert 222 is extended at a lower portion of the upper terminal 22 in the longitudinal direction, the lower terminal insert 232 is inserted into the mating groove 211 from bottom to top, and the upper terminal insert 222 is inserted into the upper terminal insert cavity 2321 from top to bottom.

A clamping lug 212 is extended downwards on the bracket 21 and positioned at the left end and the right end of the matching groove 211, and a lower terminal positioning boss embedding hole 2121 is formed on the clamping lug 212; a lower terminal positioning boss 231 protruding from the left end face and the right end face of the lower terminal insert 232 is formed at the left end and the right end of the lower terminal insert 232 of the lower terminal 23 at positions corresponding to the lower terminal positioning boss insertion holes 2121, respectively, and the lower terminal positioning boss 231 is inserted into the lower terminal positioning boss insertion holes 2121.

With continued reference to fig. 5, a positioning hole 213 is formed in each of the left and right ends of the engaging groove 211 on the bracket 21, a mounting hole 112 is formed in the step 111 at a position corresponding to the positioning hole 213, and the bracket 21 is fastened to the step 111 by a fastener at a position corresponding to the positioning hole 213 and the mounting hole 112. From the foregoing, it can be seen that: after the secondary connector assembly 2 is put in place, the screw is inserted through the mounting hole 112 and tightened by the nut, so that the secondary connector assembly 2 is mounted in place, that is, the mounting plate 1 is mounted in place. The aforementioned tenons 12 are three, form a "]" shape and mate with the openings of the mask 200.

As shown in fig. 4, the tenon 12 is provided with a positioning protrusion 121 and a tightening hole 122, the positioning protrusion 121 is used for clamping and positioning, and the tightening hole 122 is used for fixing the mounting plate 1. The cinching hole 122 mates with a threaded hole in the support arm 301.

An upper terminal end surface boss 221 protruding outward is formed on each of the left and right end surfaces of the upper terminal 22, a guide head 2211 is extended from a downward side of the upper terminal end surface boss 221, a guide hole 2311 is formed in the lower terminal positioning boss 231, and the guide head 2211 is inserted into the guide hole 2311.

In summary, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the task of the utility model, and faithfully honors the technical effects carried by the applicant in the technical effect column above.

Claims

1. The utility model provides a secondary binding post structure of circuit breaker, the circuit breaker include circuit breaker casing (100) and install face guard (200) at circuit breaker casing (100) front side, its characterized in that: the secondary wiring terminal structure include mounting panel (1) and secondary connector assembly (2), mounting panel (1) are installed on circuit breaker casing (100) and are located the top of face guard (200), secondary connector assembly (2) are installed on mounting panel (1), this secondary connector assembly (2) include support (21), go up terminal (22) and lower terminal (23), support (21) with mounting panel (1) are fixed, go up terminal (22) and lower terminal (23) installation location and be in on support (21), and go up terminal (22) are located the outside of face guard (200), and lower terminal (23) are located the inboard of face guard (200).

2. The secondary terminal structure of a circuit breaker according to claim 1, wherein: the circuit breaker further comprises a mounting bracket (300), wherein the rear end of the mounting bracket (300) is fixed with the circuit breaker housing (100), and the front end of the mounting bracket (300) is fixed with the mounting plate (1).

3. The secondary terminal structure of a circuit breaker according to claim 2, wherein: the mounting plate (1) forms a tenon (12) towards one side of the breaker shell (100) at intervals, and mortise (101) is formed on the breaker shell (100) at a position corresponding to the tenon (12), and the tenon (12) and the mortise (101) are in mortise-tenon fit with each other; a support arm (301) is formed at the upper part of the front end of the mounting bracket (300), and one side of the mounting plate (1) facing the mask (200) is supported on the support arm (301) and is fixed with the support arm (301).

4. A secondary terminal structure of a circuit breaker according to claim 1 or 2 or 3, characterized in that: a mask opening is formed at the top of the mask (200), and an outer edge (13) is formed on the mounting plate (1), and the outer edge (13) is matched with the mask opening.

5. The secondary terminal structure of a circuit breaker according to claim 1, wherein: the mounting plate (1) is provided with a secondary connector assembly mounting groove (11) penetrating through the thickness direction of the mounting plate (1), the periphery edge of the secondary connector assembly mounting groove (11) is provided with a step edge (111), the secondary connector assembly (2) is matched with the secondary connector assembly mounting groove (11), and the support (21) is supported on the step edge (111).

6. The secondary terminal structure of a circuit breaker as recited in claim 5, wherein: the number of the secondary connector assembly mounting grooves (11) is two, the two secondary connector assembly mounting grooves are separated from each other and have the same structure, and one secondary connector assembly (2) is distributed at the position corresponding to each secondary connector assembly mounting groove (11).

7. The secondary terminal structure of a circuit breaker as recited in claim 5, wherein: a matching groove (211) is formed in the middle of the length direction of the support (21), a lower terminal inserting body (232) is formed in the upper portion of the length direction of the lower terminal (23), an upper terminal inserting body cavity (2321) is formed in the middle of the length direction of the lower terminal inserting body (232), an upper terminal inserting body (222) extends at the lower portion of the length direction of the upper terminal (22), the lower terminal inserting body (232) is inserted into the matching groove (211) from bottom to top, and the upper terminal inserting body (222) is inserted into the upper terminal inserting body cavity (2321) from top to bottom.

8. The secondary terminal structure of a circuit breaker as recited in claim 7, wherein: a clamping lug (212) is arranged on the bracket (21) and positioned at the left end and the right end of the matching groove (211) in a downward extending mode, and a lower terminal positioning boss embedding hole (2121) is formed in the clamping lug (212); a lower terminal positioning boss (231) protruding from the left end face and the right end face of the lower terminal insert (232) is formed at the left end and the right end of the lower terminal insert (232) at positions corresponding to the lower terminal positioning boss insertion holes (2121), and the lower terminal positioning boss (231) is inserted into the lower terminal positioning boss insertion holes (2121).

9. The secondary terminal structure of a circuit breaker as recited in claim 7, wherein: a positioning hole (213) is formed in the bracket (21) and located at the left end and the right end of the matching groove (211), a mounting hole (112) is formed in the step edge (111) and located at the position corresponding to the positioning hole (213), and the bracket (21) and the step edge (111) are fixed by a fastener at the positions corresponding to the positioning hole (213) and the mounting hole (112).

10. The secondary terminal structure of a circuit breaker as recited in claim 8, wherein: an upper terminal end surface boss (221) protruding outwards is formed on the left end surface and the right end surface of the upper terminal (22), a guide head (2211) extends downwards from one side of the upper terminal end surface boss (221), a guide hole (2311) is formed in the lower terminal positioning boss (231), and the guide head (2211) is inserted into the guide hole (2311).