CN113539757A - Special breaker for drawer - Google Patents

Abstract

The invention relates to a breaker special for a drawer, which comprises a base: an outgoing line conductive plate and an incoming line conductive plate are respectively arranged at two ends of the base in the longitudinal direction, an operating mechanism is arranged at the position close to the middle of the base, an outgoing line side and an incoming line side are respectively formed on the base and positioned at two longitudinal sides of the operating mechanism, a mutual inductor is adaptively arranged at the position between the operating mechanism and the outgoing line conductive plate in the outgoing line side, a through hole is formed in the mutual inductor, a flexible connection is led out from the operating mechanism, and the flexible connection penetrates through the through hole and is electrically connected with the outgoing line conductive plate; and (4) covering: a wiring port is arranged on the groove; plug-in terminal: the transformer is fixedly arranged at the position of the wiring port, is connected with the transformer and is reserved with an output port. The circuit breaker provided by the invention has the advantages that the mutual inductor is arranged in the circuit breaker, and the plug-in terminal is arranged, so that the wiring efficiency and the engineering installation efficiency of workers are greatly improved, the drawer space is saved, and the effect is obvious.

Description

Special breaker for drawer

Technical Field

The invention relates to a circuit breaker, in particular to a plastic shell type circuit breaker specially used for being installed in a drawer.

Background

As a circuit breaker with extremely wide application in the electric power field, the applied scenario is often different due to some special requirements, for example, the circuit breaker in the present invention is particularly applied inside a limited box space similar to a drawer, so that when the circuit breaker in such a scenario is applied, the requirements such as the size of the component that needs to be matched with external wiring are higher, even in practical application, the installation space inside the drawer is often limited, the heat dissipation is poor, so that it is difficult for a worker to install the circuit breaker, and the following scenarios are particularly reflected:

after the circuit breaker is installed in the drawer, the copper bar of each phase needs to be led out at the leading-out end of the circuit breaker, then a transformer needs to be installed at other spatial positions in the drawer and on the copper bar of each phase, meanwhile, signal wires led out from the transformer need to be connected into instruments and meters such as a voltage ammeter one by one, and the application scenes have obvious inconvenience in practical use, namely, installation workers need to consider the installation position of the transformer while wiring, and because the copper bars are all structures (namely hard links) made of hard copper materials, the transformer is easy to be broken during assembly, so that the signal detection and acquisition performance of the transformer are influenced, and further, because of the limitation of the internal space of the drawer, when a customer needs to carry out lifting of other performance requirements on the drawer type distribution box, the design is more compelling, there is not enough space to accommodate the configuration of more components.

Based on the defects of the prior art about the current situation of the drawer-dedicated circuit breaker, the invention carries out corresponding structural design improvement on the circuit breaker.

Disclosure of Invention

The invention aims to provide a breaker special for a drawer, which has a simple structure and can effectively improve the installation efficiency.

In order to achieve the purpose, the invention adopts a breaker special for a drawer, which comprises

Base: the circuit breaker of the invention preferably adopts a plastic shell type circuit breaker, and the operating mechanism arranged in the circuit breaker is the same structural principle of the operating mechanism in the prior art, so the operating mechanism is not described in detail, a mutual inductor is arranged in the position between the operating mechanism and the outgoing line conductive plate in the outgoing line side in a matching way, namely the mutual inductor is arranged on the base, and a through hole for inserting a lead is arranged on the mutual inductor. The flexible connection penetrates through the through hole and is electrically connected with the outgoing line conductive plate in a welding or threaded fastening connection mode;

and (4) covering: the wire connecting port is arranged on the upper cover, the specific position of the wire connecting port is not specified, and the wire connecting port can be arranged on the top end surface of the upper cover and also can be arranged on the side wall of the upper cover;

plug-in terminal: the external instrument and meter can be directly matched with the matched wiring terminal and the output port of the plug terminal, so that the wiring and wiring process is simplified.

As a further arrangement of the present invention, in order to simplify the installation structure of the transformer in the breaker housing as much as possible, the upper cover is provided with a positioning column extending towards the transformer, and the positioning column is abutted against the transformer, specifically, the transformer preferably adopts a "convex" structure, that is, the transformer has a body portion and a protruding portion distributed above the body portion, the top end face edge of the protruding portion has a boss type edge, and the positioning column is abutted against the boss type edge, so as to avoid that the positioning column is directly abutted against the body portion of the transformer (the body portion is a key portion of the transformer), so as to cause deformation or damage of the body portion of the transformer, and further affect the signal accuracy of the transformer detection and sampling.

As a further arrangement of the present invention, the drawer-dedicated circuit breaker further comprises a mounting bracket: the mounting bracket is provided with a transverse reinforcing plate and a fastening plate longitudinally and downwardly extending from two transverse side positions of the transverse reinforcing plate, the upper cover is provided with a mounting column extending towards the fastening plate at a position corresponding to the fastening plate, the lower end edge of the fastening plate is provided with an adapter plate extending approximately perpendicular to the fastening plate, the plug-in terminal comprises a terminal body and a mounting plate extending outwards from two transverse side positions of the terminal body, the plug-in terminal forms an integrated assembly structure with the mounting bracket through fastening and mounting between the adapter plate and the mounting plate, and the plug-in terminal is fixedly mounted on the upper cover through fastening and mounting between the mounting bracket and the mounting column; obviously, install mutual-inductor and the structure that plug-in terminal used in drawer type block terminal simultaneously inside the circuit breaker, saved the space in the drawer to greatly made things convenient for staff's installation effectiveness.

Through the improvement of the technical scheme in the prior art, the special breaker for the drawer has the following beneficial effects in many aspects: 1. be convenient for assemble, save the labour: in the prior art, copper bars are adopted for wiring at the outgoing line side and the incoming line side of a circuit breaker (generally, a molded case circuit breaker) used in a drawer, and then a mutual inductor is sleeved on the copper bars (because the molded case circuit breaker is a three-phase control component, at least three copper bars are also connected to the incoming line side, and at least three copper bars are also led out from the outgoing line side, and a mutual inductor needs to be inserted on each copper bar by a worker to match the limitation of the internal space of the drawer, so that the assembly process is difficult, therefore, in the invention, the mutual inductor is directly arranged in the molded case circuit breaker, and then a data line on the mutual inductor is connected to an insertion section arranged on the upper cover of the circuit breaker, so that the complex processes of wiring (mainly referring to the distribution of the copper bars) in the internal space of the drawer and inserting the mutual inductor are avoided, and the assembly efficiency is greatly improved; 2. the wiring is more convenient: in the prior art, data wires led out from each mutual inductor are required to be connected to an instrument one by one, the reliability and stability during wiring are determined according to the thought experience, and the hidden danger of unstable data transmission exists in long-term use; 3. a brand-new structure is developed in the field of molded case circuit breakers: according to the technical scheme of the invention, in order to save the internal space of the drawer, on the internal structure of the molded case circuit breaker applied in the drawer, an integrated hard connection copper bar formed between the operating mechanism and the outgoing current conducting plate in the prior art is replaced by soft connection, namely, the hard connection copper bar which is in an integrated structure with the outgoing current conducting plate is led out from the operating mechanism in the prior art and is arranged along the bottom plate of the base, and the hard connection copper bar is arranged along the bottom plate of the base, so that the mutual inductor has a certain volume, a through hole for penetrating a lead and detecting signals such as voltage, current and the like is generally arranged in the middle position of the shell (because an iron core, a winding coil and the like are required to be arranged in the shell and on the peripheral side of the through hole) due to the limitation of the structure, generally, a person skilled in the art can hardly imagine that the mutual inductor is directly arranged in the shell of the circuit breaker, therefore, the hard connection copper bar led out by the operating mechanism is replaced by the soft connection (namely the soft wire connection), the defect that the hard connection copper bar in the prior art is arranged along the floor of the base is overcome, meanwhile, the soft connection can be randomly penetrated through the through hole of the mutual inductor and welded on the outgoing line current conducting plate, the mutual inductor is used as a key component for detecting and sampling signals such as current and voltage, the collected signals need to be transmitted to display equipment such as instruments and meters through a conducting wire, an output port for butting with external display equipment is further arranged on the upper cover of the molded case circuit breaker, and the series of improvements improve the expansibility of the molded case circuit breaker in the prior art, and particularly when the improved plastic case circuit breaker is applied to a drawer, the beneficial effects are more obvious.

Drawings

FIG. 1 is a schematic view of a prior art molded case circuit breaker installed in a drawer;

fig. 2 is a schematic illustration of a prior art molded case circuit breaker base portion with omission;

fig. 3 is a schematic view of the molded case circuit breaker of the present invention assembled into a drawer;

FIG. 4 is a perspective view of the case structure of the circuit breaker specifically for use in drawers in accordance with the present invention;

FIG. 5 is a schematic view of the assembly of the base and the transformer of the present invention;

fig. 6 is a perspective view of the upper cover and the jack terminal of the present invention;

FIG. 7 is a schematic perspective view of the upper cover of FIG. 6;

FIG. 8 is a perspective view of the invention;

FIG. 9 is a perspective view of a mounting bracket of the present invention;

FIG. 10 is a schematic view of the connection between the instrument transformer and the jack terminal of the present invention;

FIG. 11 is a schematic view of the structure of the mutual inductor and the upper cover;

fig. 12 is a schematic view of the assembly between the transformer and the base in the present invention.

Detailed Description

Fig. 1 to 12 show that the present embodiment employs a circuit breaker dedicated to a drawer, and as can be seen from fig. 4 to 11, the circuit breaker dedicated to a drawer specifically includes

Base 1: the two ends of the longitudinal direction are respectively provided with an outgoing line conductive plate 100 and an incoming line conductive plate 110, the middle position of the base 1 is used for installing an operating mechanism 12, and the outgoing line side 10 and the incoming line side 11 controlled by the operating mechanism 12 to be electrically conducted and disconnected are respectively formed on the base 1 and on the two longitudinal sides of the operating mechanism 12, specifically, the circuit breaker of the embodiment preferably adopts a plastic shell type circuit breaker, the operating mechanism 12 installed therein is also the same structural principle of the operating mechanism in the prior art plastic shell circuit breaker, so the operating mechanism 12 is not described in detail, especially, in fig. 2, the operating mechanism 12 is only shown on the base 1 as a simplified drawing (namely, the area of a chain line frame is shown in fig. 2), a transformer 3 with a brand-new structure is installed in the outgoing line side 10 and at a position between the operating mechanism 12 and the outgoing line 100 in a matching manner, that is, the mutual inductor 3 is installed on the base 1, and as shown in fig. 4, 5 and 12, a through hole 30 for inserting a flexible connection 300 is formed in the mutual inductor 3, in this embodiment, in order to effectively prevent a hard copper bar from scratching the mutual inductor, the hard copper bar led out from the operating mechanism in the prior art is specially replaced by the flexible connection 300, and the flexible connection 300 passes through the through hole 30 and is electrically connected with the outgoing line conductive plate 100, obviously, the flexible connection 300 and the outgoing line conductive plate 100 may be electrically connected by using a welding method, a threaded fastening method, or the like;

an upper cover 2: fig. 7 shows that the wiring port 20 is formed thereon, in this embodiment, the specific position of the wiring port 20 is not specified, and the wiring port can be formed on the top end surface of the upper cover 2, or can be formed on the side wall of the upper cover 2;

plug-in terminal 4: fig. 7 is clearly shown in fig. 6, and is fixedly installed at the position of the connection port 20, and further it is shown in fig. 10, a data line 31 for transmitting signals such as voltage and current is connected between the connection port and the transformer 3, and an output port 40 for plug-in connection with a display device such as an external instrument is reserved on the connection port, that is, in this embodiment, the plug-in terminal 4 has an input port 41 connected with the transformer 3 through the data line 31; it can be seen clearly from fig. 3 that, the arrangement of the plug terminal 4 enables the external instrument 70 to directly adopt the matched connection terminal 700 to be matched with the output port 40 of the plug terminal 4, so as to simplify the wiring process, and the external connection terminal is directly plugged on the output port 40.

In this embodiment, in order to simplify the installation structure of the transformer in the case of the circuit breaker as much as possible, as shown in fig. 6 and 11, the upper cover 2 has a positioning column 21 extending toward the transformer 3, the positioning post 21 is abutted against the transformer 3, and as further shown in fig. 9, the transformer 3 preferably adopts a structure of a shape like a Chinese character 'tu', i.e. the transformer 3 has a body part 32 and a protruding part 33 distributed over the body part 32, the top end edge of the protruding portion 33 has a boss type edge 330, the positioning column 21 abuts on the boss type edge 330, so as to prevent the positioning column 21 from directly abutting against the body portion of the transformer 3 (the body portion 32 is a key portion of the transformer) to cause deformation or damage to the body portion 32 of the transformer 3, thereby affecting the signal accuracy of detection and sampling of the transformer 3.

In this embodiment, as shown in fig. 6, the breaker dedicated to the drawer further includes a mounting bracket 5: it is mainly used as an intermediate connecting piece for forming a fixed installation between the plug terminal 4 and the upper cover 2, as can be seen from fig. 9, the mounting bracket 5 has a transverse reinforcing plate 50 and a fastening plate 51 extending longitudinally downward from both transverse side positions of the transverse reinforcing plate 50, as can be seen from fig. 6, the upper cover 2 has a mounting post 22 extending toward the fastening plate 51 at a position corresponding to the fastening plate 51, the lower end edge of the fastening plate 51 has an adapter plate 52 extending substantially perpendicular to the fastening plate 51, as can be seen from fig. 8, the plug terminal 4 includes a terminal main body 42 and a mounting plate 43 extending outward from both transverse side positions thereof, the plug terminal 4 forms an integral assembly structure with the mounting bracket 5 by the fastening installation between the adapter plate 52 and the mounting plate 43, and the plug terminal 4 realizes the fixed installation by the fastening installation between the mounting bracket 5 and the mounting post 22 Is arranged on the upper cover 2; obviously, the structure that the mutual inductor 3 and the plug terminal 4 are simultaneously arranged inside the molded case circuit breaker and applied to the drawer type distribution box saves the space in the drawer and greatly facilitates the installation efficiency of workers.

The main differences between the breaker for drawer of this embodiment and the breaker for drawer in the prior art are as follows: as shown in fig. 1 and fig. 2, in the prior art, the plastic-shell circuit breaker b used in the drawer 7 needs to be provided with the transformer 3 on each extended copper bar 6, and is connected to the instrument 70 for displaying, in this structure, the transformer 3 occupies the inner space of the drawer 7 greatly, and the assembly of the worker is complicated, in addition, as is obvious from fig. 2, the inherent condition for providing the transformer 3 is not provided in the inner part of the plastic-shell circuit breaker b shell in the prior art, that is, in the prior art, the hard-connected copper bar 120 which is integrated with the outgoing line 100 is led out from the operating mechanism 12, and the hard-connected copper bar 120 is arranged against the bottom plate of the base 1, because of the limitation of this structure, and the transformer 3 has a certain volume size, the through hole 30 for providing the soft connection 300 and detecting the signals such as voltage and current is generally opened at the middle position of the shell (because of the through hole 30 is arranged inside the shell, The peripheral position of the through hole 30 needs to be provided with an iron core, a wound coil, etc.), so that it is difficult for those skilled in the art to imagine that the mutual inductor 3 is directly and internally arranged inside the circuit breaker shell under the thought limit of the structural foundation, and because the corresponding structural improvement needs to be performed on the hard connection copper bar 120 of the whole circuit breaker, and the structure of the mutual inductor 3 which is adapted to the base 1 is also designed, and the applicant just improves the internal structure of the molded case circuit breaker b, so as to arrange the mutual inductor in the drawer 7 directly in the housing of the molded case circuit breaker b, as is apparent from a comparison of fig. 1 and 3, when the molded case circuit breaker b to which the present embodiment is applied is in the drawer 7, the whole wiring in the drawer 7 is more convenient and cool, the utilization rate of the internal space of the drawer 7 can be saved, and the space is reserved for the wiring design of adding other performances in the drawer 7 in the later period.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are only illustrative of the principles of the present invention, but also various changes and modifications of the present invention, which are within the spirit of the technical solution of the present invention and fall within the scope of the claims of the present invention. The scope of the invention is defined by the appended claims, the description, the drawings, and their equivalents.

Claims (5)

1. The utility model provides a special circuit breaker of drawer which characterized in that: comprises that

Base: the two ends of the base in the longitudinal direction are respectively provided with an outgoing line conductive plate and an incoming line conductive plate, the middle position of the base is used for installing an operating mechanism, the base and the two longitudinal sides of the operating mechanism respectively form an outgoing line side and an incoming line side controlled by the operating mechanism to be electrically conducted and disconnected, a mutual inductor is arranged in the outgoing line side and between the operating mechanism and the outgoing line conductive plate in a matched mode, a through hole is formed in the mutual inductor, a flexible connection is led out from the operating mechanism, and the flexible connection penetrates through the through hole and is electrically connected with the outgoing line conductive plate;

and (4) covering: a wiring port is arranged on the groove;

plug-in terminal: the transformer is fixedly arranged at the position of the wiring port, a data line for transmitting signals such as voltage and current is connected between the transformer and the transformer, and an output port for being in plug-in connection with display equipment such as external instruments and meters is reserved on the transformer.

2. The drawer-specific circuit breaker of claim 1, wherein: the upper cover is provided with a positioning column extending towards the mutual inductor, and the positioning column is abutted to the mutual inductor.

3. The drawer-specific circuit breaker of claim 1 or 2, wherein:

including the installing support: the plug terminal comprises a terminal body and a mounting plate extending outwards from the two lateral sides of the terminal body, the plug terminal forms an integrated assembly structure with the mounting bracket through the fastening installation between the adapter plate and the mounting plate, and the plug terminal is fixedly arranged on the upper cover through the fastening installation between the mounting bracket and the mounting column.

4. The drawer-specific circuit breaker of claim 1 or 2, wherein: the whole transformer is of a convex structure.

5. The drawer-specific circuit breaker of claim 3, wherein: the whole transformer is of a convex structure.

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