CN219180445U

CN219180445U - Secondary plug-in terminal of low-voltage circuit breaker

Info

Publication number: CN219180445U
Application number: CN202320183886.2U
Authority: CN
Inventors: 范琨; 王玉合
Original assignee: Shanghai Renmin Electrical Apparatus Works Co Ltd
Current assignee: Shanghai Renmin Electrical Apparatus Works Co Ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-06-13
Anticipated expiration: 2033-02-10

Abstract

The utility model relates to a secondary plug-in terminal of a low-voltage circuit breaker, which comprises a movable terminal (1), a support (2), a static terminal (4) and a contact piece (5), wherein the static terminal (4) is arranged on a drawer seat, the static terminal (4) and the movable terminal (1) are mutually plugged and matched, the movable terminal (1) is fixed on the support (2) through a square nut (3), the contact piece (5) is fixed on a plug-in column of the movable terminal (1) and is assembled into a detachable contact group, and the contact group is sequentially and detachably arranged on the support (2) side by side to form a modularized combined secondary connection terminal. The utility model improves the structure of the secondary wiring terminal, three contact groups can be arranged on the bracket, and the contact groups can be freely selected according to the requirements of users, so that the purposes of personalized terminal combination configuration according to the actual use condition, universality of various products and convenience in disassembly and replacement are achieved.

Description

Secondary plug-in terminal of low-voltage circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage appliances, in particular to a secondary plug-in terminal of a low-voltage circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. Therefore, the circuit breaker provides safety guarantee for the circuit, and further a user can safely and assuredly use electric energy. The low-voltage circuit breaker is one of the circuit breakers, also called an air switch, and is widely applied to the control and protection of various levels of feed-out wires of a low-voltage distribution system, the power supply control of various mechanical equipment and the control and protection of an electricity utilization terminal.

The secondary terminal has a wide application range, mainly plays a role of connecting an internal circuit of the low-voltage circuit breaker with an external circuit of a user, is an important component for realizing the connection of the whole circuit, is a drawer-type secondary terminal or a fixed-type secondary terminal, generally comprises a plurality of terminal units which are sequentially stacked along a length direction, passes through all the terminal units through a plurality of bolts and is locked by nuts, and thus, the installation is realized.

Most of traditional secondary binding post designs, and is not only bulky to the required contact quantity of different products is also different, can appear the extravagant problem of contact, is difficult to realize multiple product general, dismantles and changes inconvenience.

The Chinese patent publication No. CN210429710U discloses a circuit breaker wiring terminal, including mutually plug-in matched static terminal and movable terminal, wherein: the static terminal comprises a static terminal frame, and a plurality of convex edges are arranged on the static terminal frame; the contact piece seat is clamped in the convex rib on the static terminal frame to realize positioning, and the contact piece seat is provided with a plug hole; guide jacks are arranged on two sides of the static terminal frame; the back of the static terminal frame is provided with an assembly lug and at least one elastic card, and the elastic card is arranged at the tail end of the guide jack; the movable terminal comprises a movable terminal frame, a plurality of plug-in columns corresponding to the plug-in holes are arranged on the movable terminal frame, and conductive sheets are fixed on the plug-in columns; the plug-in column is of a strip structure and is S-shaped in section, and the conductive sheets are arranged on the upper surface and the lower surface of the plug-in column; guide inserting columns corresponding to the guide inserting holes are arranged on two sides of the movable terminal frame. The secondary terminal of this patent design is integrated into one piece design, and secondary terminal is bulky, and is difficult to realize to user's individualized demand, and different products are also difficult to realize the commonality, cause the condition of extravagant contact easily.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a modularized combined design, which can be configured in a personalized way according to actual use conditions.

The aim of the utility model can be achieved by the following technical scheme:

the secondary plug-in terminal of the low-voltage circuit breaker comprises a movable terminal, a bracket, a static terminal and a contact piece, wherein the static terminal is arranged on a drawer seat, the static terminal and the movable terminal are mutually in plug-in fit, the movable terminal is fixed on the bracket, the contact piece is fixed on a plug-in post of the movable terminal and is assembled and arranged as a detachable contact group, and the contact group is sequentially and detachably arranged on the bracket side by side to form a modularized combined secondary connection terminal;

the head of the contact piece is provided with a barb structure and a step structure, and the tail of the contact piece is provided with a curved arc plate, so that the secondary terminal of the body part and the secondary terminal of the drawer part are ensured to have enough compression force when being matched;

the head of the movable terminal is provided with a boss A, and the upper and lower sections of each connecting and inserting column of the movable terminal are provided with a boss B and a positioning groove A;

the contact piece passes through barb structure and step structure install in boss A top, boss B sets up in the contact piece both sides, cooperates spacing contact piece with constant head tank A and is located the left and right sides position in the movable terminal unit, satisfies contact piece 5 deformation requirement when cooperating with static terminal 4.

Further, a plurality of positioning grooves B and a plurality of mounting holes B are formed in the support, and the mounting holes B and the positioning grooves B form a mounting structure for mounting the contact group.

Further, two rows of mounting holes B are symmetrically formed on two sides of one group of positioning grooves B, the positioning grooves B and the mounting holes B form a group of mounting structures of the contact groups, and a plurality of groups of same mounting structures of the contact groups are arranged on the support.

Further, a positioning boss and a mounting hole A are arranged at the bottom of the movable terminal, the positioning boss is matched with the positioning groove B to position the position of the movable terminal on the support, and the mounting hole B is correspondingly assembled with the mounting hole A and is connected with the movable terminal and the support through screws.

Further, the head of the boss A is flat and pointed, and plays a role in guiding when the movable terminal is matched with the static terminal, so that the stability and reliability of the matching of the movable terminal and the static terminal are further ensured.

Further, a plurality of mounting grooves for mounting square nuts are formed in the front and rear of the movable terminal, and the movable terminal is fixed to the support through the square nuts.

Further, the mounting grooves penetrate through the movable terminal and are symmetrically arranged along the central axis of the movable terminal.

Further, the contact piece head is provided with a round hole for fixing an accessory plug.

Further, the static terminal bilateral symmetry is equipped with the plate of bending of installation usefulness, be provided with the mounting hole on the plate of bending, the static terminal passes through the mounting hole and installs on the drawer seat.

Further, the support is provided with 1-3 groups of contact groups in parallel in a detachable mode, so that the purposes that terminal combinations can be configured individually according to actual use conditions, various products are universal, and the disassembly and replacement are convenient are achieved.

Compared with the prior art, the utility model has the following advantages:

(1) The utility model provides a modularized combined-type designed secondary wiring terminal, through structural improvement of the secondary wiring terminal, three contact groups can be installed on a support, one group, two groups or three groups of contact groups can be selectively installed according to user requirements, the contact groups are installed on the support through the cooperation of square nuts and screws, the installation is firmer and more stable, the terminal combination can be configured individually according to actual use conditions, various products are universal, and the purposes of convenient disassembly and replacement are achieved.

(2) The secondary terminal of the body part comprises a movable terminal, a support and a contact piece, wherein the contact piece is arranged on the movable terminal through a barb and a boss, the firmness of the installation of the contact piece and the movable terminal is guaranteed through the barb, the contact piece and the movable terminal are assembled to form a contact group, meanwhile, the tail part of the contact piece is arranged in a curved arc shape, enough pressing force is guaranteed when the secondary terminal of the body part is matched with the secondary terminal of the drawer part, and the tail part of the movable terminal is arranged to be flat and stable and reliable.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a structure of a mobile terminal according to the present utility model;

FIG. 3 is a schematic view of another structure of the moving terminal of the present utility model;

FIG. 4 is a schematic view of the bottom structure of the movable terminal of the present utility model;

FIG. 5 is a schematic diagram showing the front view of the movable terminal of the present utility model;

FIG. 6 is a schematic view of the internal cross-sectional structure of the movable terminal of the present utility model;

FIG. 7 is a view of the structure of the bracket of the present utility model;

FIG. 8 is a schematic view of a contact plate structure according to the present utility model;

fig. 9 is a schematic diagram of a structure for fixing a bracket and a movable terminal according to the present utility model.

In the figure: 1. a movable terminal; 11. a mounting groove; 12. a boss A; 13. a mounting hole A; 14. positioning the boss; 15. a boss B; 16. a positioning groove A; 2. a bracket; 21. a positioning groove B; 22. a mounting hole B; 3. a square nut; 4. a static terminal; 5. a contact piece; 51. a barb; 52. a step; 53. and a round hole.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples.

Example 1

As shown in fig. 1, a secondary plug-in terminal of a low-voltage circuit breaker comprises a movable terminal 1, a support 2, a static terminal 4 and a contact piece 5, wherein the static terminal 4 is arranged on a drawer seat, the static terminal 4 and the movable terminal 1 are mutually inserted and matched, the movable terminal 1 is fixed on the support 2, the contact piece 5 is fixed on a plug-in post of the movable terminal 1 and is assembled into a detachable contact group, and the contact group is sequentially and detachably arranged on the support 2 side by side to form a modularized combined secondary connection terminal. The support 2 can be detachably provided with 1-3 groups of contact groups side by side, and the specific installation quantity can be used for individually configuring terminal combinations according to actual use conditions. In this embodiment, as shown in fig. 1, 3 sets of contact groups are mounted on the bracket 2.

As shown in fig. 2 to 6, the movable terminal 1 of the present utility model is structured. As shown in fig. 3, the movable terminal 1 has a boss a12 at its head. The head of the boss A12 is flat and pointed, and plays a role in guiding when the movable terminal 1 is matched with the static terminal 4, so that the stability and reliability of the matching of the movable terminal and the static terminal are further ensured.

As shown in fig. 5 and 6, the upper and lower sections of each connecting and inserting column of the movable terminal 1 are respectively provided with a boss B15 and a positioning groove a16, the bosses B15 are arranged on two sides of the contact piece 5, the limiting contact piece 5 matched with the positioning groove a16 is positioned at the left and right positions in the movable terminal unit, and the deformation requirement of the contact piece 5 is met when the limiting contact piece is matched with the static terminal 4.

As shown in fig. 4 and 9, the bottom of the movable terminal 1 is provided with a positioning boss 14 and a mounting hole a13, the positioning boss 14 cooperates with a positioning groove B21 to position the movable terminal 1 on the bracket 2, and the mounting hole B22 is correspondingly assembled with the mounting hole a13 and connected with the square nut 3 through a screw so as to fix the movable terminal 1 and the bracket 2.

As shown in fig. 3 and 4, a plurality of mounting grooves 11 for mounting the square nut 3 are provided in front and rear of the movable terminal 1, and the movable terminal 1 is fixed to the bracket 2 by the square nut 3. The mounting grooves 11 penetrate through the movable terminal 1 and are symmetrically arranged along the central axis of the movable terminal 1

As shown in fig. 8, the head of the contact 5 is provided with a barb 51 structure and a step 52 structure, the contact 5 is mounted above the boss a12 of the movable terminal 1 through the barb 51 structure and the step 52 structure, and the reliability of the contact and the movable terminal is ensured through the barb. The tail of the contact piece 5 is provided with a curved arc plate, so that the body part secondary terminal and the drawer part secondary terminal are ensured to have enough pressing force when being matched. The head of the contact piece 5 is provided with a round hole 53 for fixing an accessory plug.

As shown in fig. 7, the bracket 2 is provided with a plurality of positioning grooves B21 and a plurality of mounting holes B22, and the mounting holes B22 and the positioning grooves B21 constitute a mounting structure for mounting the contact group. The two symmetrical rows of mounting holes B22 in a set of constant head tank B21 both sides, constant head tank B21 and mounting hole B22 constitute the mounting structure of a set of contact group, and constant head tank B21 and mounting hole B22's quantity can be according to actual conditions go on in this embodiment, is equipped with 3 the same contact group mounting structure of group on the support 2, contains two parallel arrangement's constant head tank B21 and sets up six mounting holes B22 in constant head tank B21 both sides in every contact group mounting structure.

As shown in fig. 1, bending plates for installation are symmetrically arranged on two sides of the static terminal 4, installation holes are formed in the bending plates, and the static terminal 4 is installed on the drawer base through the installation holes by screws.

Working principle: when the installation is carried out, the static wiring terminal 4 of the drawer part is firstly installed on the drawer seat through the left installation hole and the right installation hole by using screws, so that the installation of the drawer seat unit is realized.

The installation process of the body installation unit is as follows: firstly, the contact piece 5 is installed on the movable terminal 1 through the barb 51 and the step 52, and the movable terminal 1 is provided with the positioning groove 16 which is matched with the positioning boss 15 to reliably install the contact piece 5. The bottom of the movable terminal 1 is provided with a positioning boss 14 and a mounting hole A13 for being matched with the bracket 2, the front end and the rear end of the movable terminal 1 are provided with mounting grooves 11 for placing square nuts 3, the bracket 2 is provided with positioning grooves 21 and mounting holes B22, and a screw is used for penetrating through the mounting holes B22 on the bracket 2 and the mounting holes A13 at the bottom of the movable terminal 1 to be connected with the square nuts 3 so as to mount the movable terminal 1 on the bracket 2.

In summary, the utility model provides a modular and combined secondary wiring terminal, through the structural improvement of the secondary wiring terminal, three contact groups can be installed on a bracket, one group, two groups or three groups of contact groups can be selectively installed according to user requirements, the contact groups are installed on the bracket through the cooperation of square nuts and screws, the installation is more firm and stable, the purpose that terminal combination can be configured individually according to actual use conditions is achieved, various products are universal, and the disassembly and replacement are convenient is achieved.

It should be noted that, in the description of the present utility model, the terms "upper," "lower," "inner," "outer," "front," "rear," "both ends," "one end," "the other end," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Claims

1. The secondary plug-in terminal of the low-voltage circuit breaker comprises a movable terminal (1), a bracket (2), a square nut (3), a static terminal (4) and a contact piece (5), wherein the static terminal (4) is arranged on a drawer seat, the static terminal (4) and the movable terminal (1) are mutually plugged and matched, and is characterized in that,

the movable terminal (1) is fixed on the bracket (2) through a square nut (3), the contact piece (5) is fixed on a connecting and inserting column of the movable terminal (1) and is assembled and installed into a detachable contact group, and the contact groups are sequentially and detachably installed on the bracket (2) side by side to form a modularized combined secondary wiring terminal;

the head of the contact piece (5) is provided with a barb (51) structure and a step (52) structure, and the tail of the contact piece (5) is provided with a curved arc plate, so that the sufficient compression force of the dynamic and static terminals is ensured when the dynamic and static terminals are matched;

the head of the movable terminal (1) is provided with a boss A (12), and the upper and lower sections of each connecting and inserting column of the movable terminal (1) are provided with a boss B (15) and a positioning groove A (16);

the contact piece (5) is installed above the boss A (12) through a barb (51) structure and a step (52) structure, the boss B (15) is arranged on two sides of the contact piece (5), and the contact piece (5) is matched with the positioning groove A (16) to limit the left and right positions of the contact piece (5) in the movable terminal unit.

2. The secondary connection terminal of a low voltage circuit breaker according to claim 1, characterized in that the bracket (2) is provided with a plurality of positioning slots B (21) and a plurality of mounting holes B (22), and the mounting holes B (22) and the positioning slots B (21) constitute a mounting structure for mounting a contact group.

3. The secondary plugging terminal of the low-voltage circuit breaker according to claim 2, wherein two rows of mounting holes B (22) are symmetrically arranged on two sides of a group of positioning grooves B (21), the positioning grooves B (21) and the mounting holes B (22) form a group of mounting structures of a contact group, and a plurality of groups of same mounting structures of the contact group are arranged on the bracket (2).

4. The secondary plugging terminal of the low-voltage circuit breaker according to claim 2, wherein a positioning boss (14) and a mounting hole a (13) are arranged at the bottom of the movable terminal (1), the positioning boss (14) is matched with the positioning groove B (21) to position the movable terminal (1) at the position on the bracket (2), and the mounting hole B (22) is correspondingly assembled with the mounting hole a (13) and is connected with the movable terminal (1) and the bracket (2) through a screw.

5. The secondary terminal of a low voltage circuit breaker according to claim 1, characterized in that the head of the boss a (12) is flat pointed and plays a guiding role when the moving terminal (1) is mated with the stationary terminal (4).

6. The secondary plugging terminal of the low-voltage circuit breaker according to claim 1, wherein a plurality of mounting grooves (11) for mounting square nuts (3) are formed in the front and rear of the movable terminal (1), and the movable terminal (1) is fixed on the support (2) through the cooperation of the square nuts (3) and the mounting grooves (11).

7. The secondary connection terminal of a low voltage circuit breaker according to claim 6, wherein the mounting groove (11) penetrates the movable terminal (1) and is symmetrically arranged along the central axis of the movable terminal (1).

8. The secondary terminal of a low-voltage circuit breaker according to claim 1, characterized in that the head of the contact piece (5) is provided with a circular hole (53) for fixing an accessory plug.

9. The secondary plugging terminal of the low-voltage circuit breaker according to claim 1, wherein the stationary terminal (4) is symmetrically provided with a bending plate for installation on both sides, the bending plate is provided with an installation hole, and the stationary terminal (4) is installed on the drawer base through the installation hole.

10. The secondary terminal of a low-voltage circuit breaker according to claim 1, characterized in that said cradle (2) is removably fitted with 1-3 contact sets side by side.