CN216928435U

CN216928435U - Plastic shell type circuit breaker

Info

Publication number: CN216928435U
Application number: CN202220441748.5U
Authority: CN
Inventors: 何海良; 宋志文; 张建奇
Original assignee: Delixi Electric Co Ltd
Current assignee: Delixi Electric Co Ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-07-08
Anticipated expiration: 2032-03-01

Abstract

The utility model discloses a plastic shell type circuit breaker, which comprises a shell, and a wire inlet end conducting bar and a wire outlet end conducting bar which are correspondingly connected, wherein at least parts of the wire inlet end conducting bar and the wire outlet end conducting bar are fixed in the shell, at least one of the wire inlet end conducting bar and the wire outlet end conducting bar which are connected with each other extends to the outside of the shell and is bent towards one side, and the bent section forms a wiring end. The utility model improves the traditional wiring mode, changes the position of the wiring terminal, and arranges the wiring terminal outside the shell, so that the wiring is easier, and the labor cost and the material cost are reduced; meanwhile, the width of the external conductive bar is not limited by the size of the wiring port any more, and the material specification and the size specification of the external conductive bar have more selection spaces; secondly, change the extending direction of wiring end, satisfy the wiring demand of the different angles of external conductive bar, application scope is wider, and the electric clearance between two adjacent external conductive bars is bigger, reduces the electric breakdown risk, and the security performance is higher.

Description

Plastic shell type circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage circuit breakers, in particular to a plastic shell type circuit breaker.

Background

When the prior art plastic shell type circuit breaker is used for wiring, the wiring end of the external conducting bar needs to be inserted into the shell, is overlapped with the wiring end of the internal conducting bar, and is fastened by using a screw to realize connection. This wiring method has the following disadvantages:

firstly, due to the size of the shell, an external wiring terminal can be directly connected to the circuit breaker only when the external wiring terminal meets a preset width range, and a transfer bar needs to be added under other conditions, so that wiring operation is not friendly, and installation materials and labor cost are increased;

secondly, the external terminal can be overlapped with the internal terminal only by horizontally inserting into the shell to realize connection; first, when the external terminal and the internal terminal cannot be overlapped, if they are in a vertical state, the connection cannot be performed; and secondly, after wiring, the electric gap between two adjacent external conductive bars is very small, so that the risk of electric breakdown is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a plastic shell type circuit breaker, wherein an external conductive bar is not limited by the size of a shell any more, the wiring is easier, and the material and labor cost is reduced; meanwhile, the wiring angle is not limited, the installation requirements of more use scenes are met, the electrical clearance is increased, and the electrical breakdown risk is reduced.

In order to solve the technical problem, the utility model provides a plastic shell type circuit breaker, which comprises a shell, and a wire inlet end conducting bar and a wire outlet end conducting bar which are correspondingly connected, wherein at least parts of the wire inlet end conducting bar and the wire outlet end conducting bar are fixed in the shell, at least one of the wire inlet end conducting bar and the wire outlet end conducting bar which are connected with each other extends to the outside of the shell and is bent towards one side, and the bent section forms a wiring end.

The plastic shell type circuit breaker improves the traditional wiring mode, firstly, the position of a wiring terminal is changed, the wiring terminal is specifically arranged outside the shell, and when wiring is carried out, an external conducting bar does not need to be inserted into the shell from a wiring port for wiring, and wiring can be directly completed outside the shell, so that wiring is easier, a transfer bar does not need to be added, and labor cost and material cost are reduced; meanwhile, the width of the external conductive bar is not limited by the shell, particularly the size of a wiring port, the specification of smaller thickness and larger width can be selected, the heat dissipation capability of the external conductive bar is improved, and the material specification of the external conductive bar has more selection space; secondly, the extending direction of the wiring end is changed, the wiring requirements of the external conductive bars at different angles are met, the application range is wider, the electric gap between every two adjacent external conductive bars is larger, the electric breakdown risk can be reduced, and the safety performance is higher.

Optionally, the terminal has a bending angle of 90 °.

Optionally, the terminal extends vertically downward.

Optionally, the terminal has a connection hole, and the housing is provided with a mounting groove at a position corresponding to the connection hole, the mounting groove having an outer end opening and extending toward the inside of the housing, for mounting the terminal nut, and partially accommodating the terminal bolt.

Optionally, the mounting groove includes a first groove section and a second groove section that are axially connected, the first groove section is located outside, the cross section of the first groove section is a polygon matched with the wiring nut, a step surface is formed between the first groove section and the second groove section, and the wiring nut is installed in the first groove section and abuts against the step surface.

Optionally, the second groove section is of a cylindrical structure, and the diameter of the second groove section is larger than the diameter of the terminal bolt.

Optionally, a notch is formed in the outer side of the shell, the terminal is located in the notch, and the mounting groove is formed in the inner end wall of the notch.

Optionally, the number of the incoming end conductive bars and/or the outgoing end guide bars is more than two;

the insulation partition board is fixed on the shell and is positioned between the two adjacent wire inlet end conducting rows and between the two adjacent wire outlet end guiding rows.

Optionally, one of the insulating partition plate and the housing is provided with a connecting protrusion, the other is provided with an insertion groove, and the connecting protrusion can be inserted into the insertion groove.

Optionally, the housing includes a base and an upper cover, the base and the upper cover enclose to form an installation space, and the incoming end conductive bar and the outgoing end guide bar are both fixed to the base and at least partially located in the installation space.

Drawings

Fig. 1 is a sectional view of the inside of a molded case circuit breaker provided by the present invention;

fig. 2 is a schematic external structural diagram of the molded case circuit breaker of fig. 1;

fig. 3 is a top view of the interior of the molded case circuit breaker of fig. 1;

fig. 4 is a schematic structural diagram of an end portion of the molded case circuit breaker of fig. 1;

wherein the reference numerals in fig. 1-4 are explained as follows:

1-a shell; 11-a base; 12-an upper cover body; a-a mounting groove; 2-leading-in end conductive bar; 21-a terminal; 3-leading-out terminal conducting bar; 4-an insulating spacer;

01-a wiring nut; 02-a wiring bolt; 03-external connection of conducting bar.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-2, fig. 1 is a sectional view of an interior of a molded case circuit breaker according to the present invention; fig. 2 is a schematic external structural diagram of the molded case circuit breaker of fig. 1.

The utility model provides a plastic shell type circuit breaker, which comprises a shell 1, and a wire inlet end conducting bar 2 and a wire outlet end conducting bar 3 which are correspondingly connected, wherein one end of the wire inlet end conducting bar 2 is fixed inside the shell 1, the other end of the wire inlet end conducting bar extends to the outside of the shell 1 and is vertically bent downwards, and a wire connecting end 21 is formed on the bent section; the conducting bar 3 at the outgoing end is completely positioned in the shell 1, the wiring end of the conducting bar extends to the wiring port, and the external conducting bar 03 can be inserted into the shell 1 from the wiring port to complete wiring.

The plastic shell type circuit breaker improves the traditional wiring mode, firstly, the position of the wiring terminal 21 is changed, the wiring terminal 21 is specifically arranged outside the shell 1, and when wiring is carried out, the external conducting bar 03 does not need to be inserted into the shell 1 from a wiring port for wiring, and can directly complete wiring outside the shell 1, so that the wiring is easier, a transfer bar does not need to be added, and the labor cost and the material cost are reduced; meanwhile, the width of the external conductive bar 03 is not limited by the shell 1, specifically, the size of the wiring port, and the specification with smaller thickness and larger width can be selected, so that the heat dissipation capability of the external conductive bar 03 is improved, and the material specification of the external conductive bar 03 also has more selection space; secondly, the extending direction of the wiring end 21 is changed, the wiring requirements of the external conductive bar 03 at different angles are met, two different wiring angles are given in fig. 2, the external conductive bar 03 at the left end and the middle part is a first wiring angle, and the external conductive bar 03 at the right end is a second wiring angle outside the external conductive bar 03, so that the external conductive bar 03 can rotate to any angle around the axial direction of the wiring bolt 02, the space occupied by the external conductive bar 03 cannot change no matter the external conductive bar is rotated to any angle, and the mutual interference between the external conductive bars 03 is avoided, so that the structure of the circuit breaker is more compact, and the application range is wider; in addition, when external row 03 that leads adopts a wiring angle, the electric clearance between two adjacent external row 03 that leads is bigger, can reduce the electric breakdown risk, and the security performance is higher.

As can be seen from the above, in this embodiment, only the wiring manner of the incoming line end is improved, and the outgoing line end still adopts the conventional wiring manner, and it can be understood that, in practical application, according to different installation scenes, the plastic shell type circuit breaker of the present invention may also have two different implementation manners, where the first implementation manner is: the wire inlet end conductive bar 2 is completely positioned in the shell 1, the wire terminal of the wire inlet end conductive bar extends to the wire connecting port, one end of the wire outlet end conductive bar 3 is fixed in the shell 1, the other end of the wire outlet end conductive bar extends to the outside of the shell 1, and the wire outlet end conductive bar is vertically bent to form a wire terminal 21; the second embodiment is as follows: the incoming end conductive bar 2 and the outgoing end conductive bar 3 each have one end fixed inside the housing 1 and the other end extending outside the housing 1 and bent vertically to form the terminal 21.

In addition, in this embodiment, the bending angle of the terminal 21 is 90 °, and in practical application, the specific bending angle of the terminal 21 is not limited as long as the terminal can be wired with the terminal of the external conductive bar 03; meanwhile, when the terminal 21 is vertically bent, the bending direction is not limited, for example, in the embodiment, the terminal 21 vertically extends downward, and in practical application, the terminal 21 also vertically extends upward is feasible.

Referring to fig. 1, in this embodiment, only the vertically extending terminal 21 of the incoming line terminal conducting bar 2 is exposed outside the casing 1, and the inner wall of the terminal 21 is almost attached to the outer wall of the casing 1, so that, for the convenience of wiring, the casing 1 is further provided with a mounting groove a at a position corresponding to the connecting hole of the terminal 21, the outer end of the mounting groove a is open and extends toward the inside of the casing for mounting the terminal nut 01 and partially accommodating the terminal bolt 02, specifically, the mounting groove a includes a first groove section and a second groove section which are axially connected, the first groove section is located at the outer side and has a polygonal cross section matching the terminal nut 01, the second groove section is a cylindrical structure, the diameter of the second groove section is larger than the diameter of the terminal bolt 02 and smaller than the size of the terminal nut 01, a step surface facing the outer end is formed between the first groove section and the second groove section, the terminal nut 01 is mounted in the first groove section, and the wiring bolt 02 can penetrate through the connecting holes of the two wiring ends during wiring and is screwed with the wiring nut 01 to realize fixation.

It can be understood that if there is enough space between the inner wall of the terminal 21 and the outer wall of the housing 1, the outer wall of the housing 1 can fix the two terminals without installing the installation groove a, but the path of the lead-in terminal conductive bar 2 is longer, the cost is higher, and the economical efficiency is poor; in the present embodiment, the inner wall of the terminal 21 is almost attached to the outer wall of the housing 1, and this arrangement can minimize the path of the conductive bar 2, and reduce the cost, which is a more preferable technical solution.

In addition, in the embodiment, the wiring nut 01 is clamped in the first groove section, circumferential limiting can be guaranteed without fixation, and the mounting and dismounting are more convenient; in practical applications, the first groove section may also adopt other structural forms, such as a cylindrical structure, and in this case, the terminal nut 01 needs to be fixed in the first groove section.

Further, a notch is further provided at the outer side of the housing 1, the terminal 21 is located in the notch, and the mounting groove a is formed at the inner end wall of the notch. This arrangement can further reduce the path of the conductive bar 2, and reduce the cost.

Referring to fig. 3-4, fig. 3 is a top view of the interior of the molded case circuit breaker of fig. 1; fig. 4 is a schematic structural diagram of an end portion of the molded case circuit breaker of fig. 1.

In this embodiment, the number of the incoming line end conductive rows 2 and the number of the outgoing line end guide rows 3 are three, and the incoming line end conductive rows 2 and the outgoing line end guide rows 3 are connected in a one-to-one correspondence manner, so that, in order to separate two adjacent external conductive rows 03 and improve the protection capability, the utility model further provides an insulating partition plate 4, the insulating partition plate 4 is positioned between the two adjacent external conductive rows 03 and is fixed to the housing 1, specifically, the inner end of the insulating partition plate 4 is provided with a cylindrical connecting protrusion, the housing 1 is provided with a cylindrical insertion groove, and the connecting protrusion can be inserted into the insertion groove to fix the insulating partition plate 4.

It can be understood that, in practical application, the number of the incoming line end conductive bar 2 and the outgoing line end guide bar 3 is different, for example, more than two, and the number of the insulating partition plates 4 is also different, as long as it is ensured that two adjacent external conductive bars 03 are provided with one insulating partition plate 4.

Meanwhile, the inner end of the insulating partition plate 4 is provided with a plug-in groove, and the shell 1 is provided with a connecting bulge, so that the technical effect of fixing the insulating partition plate 4 can be realized. The fixing method of the insulating partition 4 is not limited to the fixing method of the connecting protrusion and the inserting groove, and may be fixed by bonding, or by a connecting member.

With reference to fig. 1, the housing 1 specifically includes a base 11 located at the lower end and an upper cover 12, the base 11 and the upper cover 12 are vertically combined to form an installation space, and the incoming end conducting bar 2 and the outgoing end guiding bar 3 are both fixed to the base 11 and at least partially located in the installation space.

The plastic shell type circuit breaker provided by the utility model is described in detail above, and the principle and the implementation mode of the utility model are explained in the present text by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the utility model. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a mould shell type circuit breaker, its characterized in that includes casing (1) to and correspond the electrically conductive row of inlet wire end (2) and the electrically conductive row of outlet wire end (3) of connecting, electrically conductive row of inlet wire end (2) with electrically conductive row of outlet wire end (3) all at least part is fixed in inside casing (1), interconnect electrically conductive row of inlet wire end (2) with at least one of the electrically conductive row of outlet wire end (3) extends to casing (1) is outside to bend to one side, this section of bending forms wiring end (21).

2. Molded case circuit breaker according to claim 1, characterized in that the bending angle of the terminal (21) is 90 °.

3. Mould shell circuit breaker according to claim 2, characterized in that the terminal (21) extends vertically downwards.

4. Moulded case circuit breaker according to any one of claims 1-3, wherein the terminal (21) has a connection hole, and the housing (1) is provided with a mounting groove (a) at a position corresponding to the connection hole, which is open at the outer end and extends towards the inside of the housing, for mounting the terminal nut (01) and partially accommodating the terminal bolt (02).

5. The molded case circuit breaker of claim 4, wherein the mounting groove (a) comprises a first groove section and a second groove section which are axially connected, the first groove section is located at the outer side, the cross section of the first groove section is a polygon matched with the wiring nut (01), a step surface is formed between the first groove section and the second groove section, and the wiring nut (01) is mounted in the first groove section and is abutted against the step surface.

6. Moulded case circuit breaker according to claim 5, wherein the second slot section is of cylindrical construction, the diameter of the second slot section being larger than the diameter of the terminal bolt (02).

7. A molded case circuit breaker as claimed in claim 4, wherein said case (1) is provided with a notch at an outer side thereof, said terminal (21) is located in said notch, and said mounting groove (a) is formed at an inner end wall of said notch.

8. The mold cased circuit breaker according to any of claims 1-3, wherein the number of the incoming end conductive bars (2) and the outgoing end conductive bars (3) is two or more;

the cable is characterized by further comprising an insulating partition plate (4) which is fixed on the shell (1) and is positioned between the two adjacent wire inlet end conducting bars (2) and between the two adjacent wire outlet end conducting bars (3).

9. A moulded case circuit breaker according to claim 8, wherein one of the insulating barrier (4) and the housing (1) is provided with a coupling projection and the other is provided with a plug-in slot, the coupling projection being insertable into the plug-in slot.

10. A molded case circuit breaker as claimed in any one of claims 1 to 3, wherein said housing (1) comprises a base (11) and an upper casing (12) enclosing an installation space, said incoming terminal conductor bar (2) and said outgoing terminal conductor bar (3) being fixed to said base (11) and at least partially located in said installation space.