Low-voltage distributed photovoltaic miniature circuit breaker

Abstract

This utility model relates to the field of circuit breaker technology, specifically disclosing a low-voltage distributed photovoltaic miniature circuit breaker, including a circuit breaker body and a guide rail. The clamping components include an integrally formed end plate and a flat plate. The end plate has a through hole in the middle for connection with a fixing bolt. The bottom surface of the flat plate is slidably engaged with the top and bottom surfaces of the circuit breaker body. A semi-cylindrical shell is located at the front of the lower side of the two semi-circular grooves on both sides of the middle of the bottom surface of the flat plate. A cylindrical conductor is located near the rear end of the semi-cylindrical shell. The wire end shell with an opening in the wall includes a conductive column shell and front and rear conical shells connected to the front and rear ends of the conductive column shell. A semi-circular groove and a semi-conical groove are respectively located on both sides of the middle of the top and bottom surfaces of the circuit breaker body. An arc-shaped conductive sheet is nested near the rear end of the semi-circular groove. Screw holes are located at the top and bottom of the front wall of the circuit breaker body. This design effectively solves the problems of inconvenient wiring and lack of terminal protection structure in low-voltage distributed photovoltaic miniature circuit breakers.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a low-voltage distributed photovoltaic miniature circuit breaker. Background Technology

[0002] The low-voltage distributed photovoltaic miniature circuit breaker integrates an electric operating mechanism, an intelligent controller, and a molded case circuit breaker. It features remote control, anti-islanding protection, multiple fault monitoring, and automatic reclosing functions. Through intelligent control modules and IoT communication technology, it enables the safe operation and efficient management of photovoltaic systems and is widely used in distributed photovoltaic grid-connected scenarios.

[0003] Currently, low-voltage distributed photovoltaic miniature circuit breakers are often required in certain specific scenarios. These miniature circuit breakers are typically mounted on fixed rails within a protective enclosure using slots. Additionally, the top and bottom of the miniature circuit breaker have wiring structures where wires are screwed and crimped for secure connection. These structural features mean that during installation, multiple wire ends must be inserted into the circuit breaker's terminals individually, and then multiple screws must be tightened sequentially to secure each wire to the terminals. This is inconvenient and lacks protective measures for the wiring terminals. Utility Model Content

[0004] The purpose of this utility model is to provide a low-voltage distributed photovoltaic miniature circuit breaker to solve the problems of inconvenient wiring and lack of terminal protection structure in current low-voltage distributed photovoltaic miniature circuit breakers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage distributed photovoltaic miniature circuit breaker, comprising a circuit breaker body and a guide rail that is snapped and matched with the rear wall of the circuit breaker body. The clamping component includes an end plate and a flat plate integrally formed on the rear side of the top of the end plate. The end plate has a through hole in the middle. The two sides of the bottom surface of the flat plate are respectively slidably snapped with the top and bottom surfaces of the circuit breaker body along the longitudinal direction. The two sides of the bottom surface of the flat plate are respectively provided with semi-circular grooves. A semi-cylindrical shell is fixed to the front part of the lower side of the semi-circular groove. The semi-cylindrical shell and the semi-circular groove are nested together near the rear end. A cylindrical conductor; the wire end housing wall has an opening along its axial direction, and the wire end housing includes a conductive cylindrical housing and a front conical housing and a rear conical housing that are connected to the front and rear ends of the conductive cylindrical housing; the fixing screw is matched with the through hole movable sleeve; the front part of the two sides of the middle of the top and bottom surface of the circuit breaker body is provided with a semi-circular groove, the rear end of the semi-circular groove is connected to a semi-conical groove, an arc-shaped conductive sheet is nested near the rear end of the semi-circular groove, the semi-cylindrical housing is slidably matched with the semi-circular groove, and the top and bottom of the front wall of the circuit breaker body are respectively provided with screw holes that are matched with the threaded sleeve of the rear end of the fixing screw.

[0006] Preferably, the top and bottom surfaces of the circuit breaker body are provided with T-shaped grooves along the longitudinal direction near both sides, and the bottom surface of the flat plate is provided with T-shaped rails that slide and engage with the T-shaped grooves near both sides.

[0007] Preferably, the guide rail includes a strip extending laterally and a retaining plate evenly distributed laterally at the front end of the bent portion at the top and bottom ends of the strip, and the rear wall of the circuit breaker body is provided with a retaining groove that slides and engages with the retaining plate laterally.

[0008] Preferably, the card plate is provided with a circular hole corresponding to the rear end of the semi-conical groove, and a slot is provided between the circular hole and the edge of the card plate, and the circular hole is sleeved and matched with the rear end of the rear conical shell.

[0009] Preferably, the arc-shaped conductive sheet, the cylindrical conductor, and the conductive cylindrical shell are all made of copper.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] During installation of the low-voltage distributed photovoltaic miniature circuit breaker disclosed in this utility model, the end of the conductor is first inserted into the wire end housing, and then the wire end housing is placed in a semi-circular groove. When installing the clamping component, the front end of the wire end housing is gradually inserted into the semi-cylindrical housing. Once the clamping component is in place, the wire end housing can securely wrap the end of the conductor, completing the wiring operation. The wiring point is covered by a flat plate to provide protection for the wiring end. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0013] Figure 2 This is a three-dimensional structural diagram of the main body of the circuit breaker of this utility model;

[0014] Figure 3 This is a three-dimensional structural diagram of the guide rail of this utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the clamping component of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the wire end housing of this utility model.

[0017] In the diagram: 1-Circuit breaker body; 1.1-Slot; 1.2-Semi-circular groove one; 1.3-Semi-conical groove; 1.4-Arc-shaped conductive sheet; 1.5-T-slot; 1.6-Screw hole;

[0018] 2-Guide rail; 2.1-Strip; 2.2-Clamping plate; 2.2.1-Slot; 2.2.2-Round hole;

[0019] 3-Clamping component; 3.1-End plate; 3.1.1-Through hole; 3.2-Flat plate; 3.2.1-Semi-circular groove II; 3.3-Semi-cylindrical shell; 3.4-Cylindrical conductor; 3.5-T-rail;

[0020] 4-Wire end housing; 4.1-Conductive post housing; 4.2-Front conical housing; 4.3-Rear conical housing;

[0021] 5-Fixing screws. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This utility model provides a technical solution: a low-voltage distributed photovoltaic miniature circuit breaker. The circuit breaker body 1 is a DZ47-63Z type DC circuit breaker. Semi-circular grooves 1.2 are respectively provided on the front sides of the middle of the top and bottom surfaces of the circuit breaker body 1. Semi-conical grooves 1.3 are respectively connected to the rear ends of the semi-circular grooves 1.2. An arc-shaped conductive sheet 1.4 is nested near the rear end of the semi-circular grooves 1.2. Screw holes 1.6 are respectively provided on the top and bottom of the front wall of the circuit breaker body 1 to match the threaded connection of the rear end of the fixing screws 5. Slots 1.1 are respectively provided on the top and bottom of the rear wall of the circuit breaker body 1 near both sides. T-shaped grooves 1.5 are respectively provided longitudinally on the top and bottom surfaces of the circuit breaker body 1 near both sides. The arc-shaped conductive sheet 1.4 is made of copper.

[0024] The guide rail 2 includes a slat 2.1 extending laterally and a retaining plate 2.2 evenly distributed laterally at the front end of the bent portion at the top and bottom of the slat 2.1. The retaining plate 2.2 has round holes 2.2.2 near its edge on both sides of its middle portion, and a slot 2.2.1 is provided between the round holes 2.2.2 and the edge of the retaining plate 2.2. The slat 2.1 is fixed to the rear wall of the inner cavity of the protective box using screws. After aligning the circuit breaker body 1 with the position between two adjacent retaining plates 2.2 and pushing it back, the circuit breaker body 1 is moved laterally until the retaining slot 1.1 engages with the retaining plate 2.2, thus securing the circuit breaker body 1 onto the guide rail 2.

[0025] The wire end housing 4 has an opening along its axial direction in its wall, and includes a conductive post housing 4.1 and a front conical housing 4.2 and a rear conical housing 4.3 that are connected to the front and rear ends of the conductive post housing 4.1. The conductive post housing 4.1 is made of copper, and the rear conical housing 4.3 is made of insulating plastic. The rear end of the rear conical housing 4.3 is fitted into the circular hole 2.2.2.

[0026] The clamping component 3 includes an end plate 3.1 and a flat plate 3.2 integrally formed on the top rear side of the end plate 3.1. The end plate 3.1 has a through hole 3.1.1 in the middle. The bottom surface of the flat plate 3.2 has T-shaped rails 3.5 near both sides, which slide and engage with the T-shaped grooves 1.5. The bottom surface of the flat plate 3.2 has semi-circular grooves 3.2.1 on both sides. A semi-cylindrical shell 3.3 is fixed to the lower front of the semi-circular groove 3.2.1. A cylindrical conductor 3.4 is nested in the semi-cylindrical shell 3.3 near the rear end and the semi-circular groove 3.2.1. The cylindrical conductor 3.4 is made of copper. The semi-cylindrical shell 3.3 slides and engages with the semi-circular groove 1.2.

[0027] The fixing screw 5 is matched with the movable sleeve of the through hole 3.1.1.

[0028] In summary, when installing the low-voltage distributed photovoltaic miniature circuit breaker, first fix the guide rail 2 to the rear wall of the protective enclosure. Then, after removing the outer sheath of the wire end, insert the exposed conductor end into the inner cavity of the conductive housing 4.1. Insert the rear side of the wire end from the slot 2.2.1 into the round hole 2.2.2.

[0029] Next, insert the wire end housing 4 into the semi-circular groove 1.2 at the corresponding position.

[0030] Insert the rear end of the T-shaped rail 3.5 into the front end of the T-shaped groove 1.5, and slide the semi-cylindrical shell 3.3 into the semi-circular groove 1.2, and insert the front conical shell 4.2 into the rear end of the cylindrical cavity formed by the semi-cylindrical shell 3.3 and the semi-circular groove 2.1.

[0031] Next, insert the fixing screw 5 into the through hole 3.1.1 and thread it into the screw hole 1.6. Then, use a screwdriver to tighten the fixing screw 5 so that the clamping part 3 moves backward as a whole.

[0032] When the outer edge of the rear end of the conductive post housing 4.1 abuts against the front end of the semi-conical groove 1.3, it stops moving backward. At this time, the rear end of the rear conical housing 4.3 will be inserted into the circular hole 2.2.2, so that the circuit breaker body 1 is positioned on the corresponding card plate 2.2.

[0033] As the clamping component 3 moves backward, the cylindrical cavity formed by the semi-cylindrical shell 3.3 and the semi-circular groove 3.2.1 gradually compresses and gathers the conductive shell 4.1, causing its opening to gradually close. When the conductive shell 4.1 is fitted with the cylindrical conductor 3.4, the outer peripheral wall of the cylindrical conductor 3.4 also fits precisely with the arc-shaped conductive sheet 1.4, the rear wall of the end plate 3.1 fits precisely with the front wall of the top and bottom of the circuit breaker body 1, and the flat plate 3.2 precisely covers the wire connection terminals. This completes the overall installation and wiring operation of the low-voltage distributed photovoltaic miniature circuit breaker.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-voltage distributed photovoltaic miniature circuit breaker, comprising a circuit breaker body (1) and a guide rail (2) that is snapped into and matched with the rear wall of the circuit breaker body (1), characterized in that, Also includes: A clamping component (3), comprising an end plate (3.1) and a flat plate (3.2) integrally formed on the rear top side of the end plate (3.1), wherein the end plate (3.1) has a through hole in the middle. 3.1.1) The bottom surfaces of the plate (3.2) are respectively slidably engaged with the top and bottom surfaces of the circuit breaker body (1) along the longitudinal direction. The bottom surfaces of the plate (3.2) are respectively provided with semi-circular grooves (3.2.1) on both sides. A semi-cylindrical shell (3.3) is fixed to the lower front part of the semi-circular groove (3.2.1). A cylindrical conductor (3.4) is nested together with the semi-circular groove (3.2.1) near the rear end of the semi-cylindrical shell (3.3). The wire end housing (4) has an opening slit along its axial direction in its wall, and the wire end housing (4) includes a conductive post housing (4.1) and a front conical shell (4.2) and a rear conical shell (4.3) that are connected to the front and rear ends of the conductive post housing (4.1); A fixing screw (5) is provided, which is movably fitted into the through hole (3.1.1); The circuit breaker body (1) has semi-circular grooves (1.2) on both sides of the front part of the top and bottom center of the top and bottom surface. The semi-circular grooves (1.2) are respectively connected to semi-conical grooves (1.3) at their rear ends. An arc-shaped conductive sheet (1.4) is nested near the rear end of the semi-circular grooves (1.2). The semi-cylindrical shell (3.3) is slidably engaged with the semi-circular grooves (1.2). The top and bottom of the front wall of the circuit breaker body (1) are respectively provided with screw holes (1.6) that are threadedly engaged with the rear end of the fixing screws (5).

2. The low-voltage distributed photovoltaic miniature circuit breaker according to claim 1, characterized in that: The circuit breaker body (1) has T-shaped grooves (1.5) on its top and bottom surfaces near both sides, and the flat plate (3.2) has T-shaped rails (3.5) on its bottom surface near both sides that slide and engage with the T-shaped grooves (1.5).

3. The low-voltage distributed photovoltaic miniature circuit breaker according to claim 1, characterized in that: The guide rail (2) includes a strip (2.1) extending laterally and a clamping plate (2.2) evenly arranged laterally at the front end of the bent portion at the top and bottom ends of the strip (2.1). The rear wall of the circuit breaker body (1) is provided with a groove (1.1) that is slidably engaged with the clamping plate (2.2) laterally.

4. The low-voltage distributed photovoltaic miniature circuit breaker according to claim 3, characterized in that: The card plate (2.2) is provided with a circular hole (2.2.2) corresponding to the rear end of the semi-conical groove (1.3). A groove (2.2.1) is provided between the circular hole (2.2.2) and the edge of the card plate (2.2). The circular hole (2.2.2) is sleeved and matched with the rear end of the rear conical shell (4.3).

5. The low-voltage distributed photovoltaic miniature circuit breaker according to claim 1, characterized in that: The arc-shaped conductive sheet (1.4), the cylindrical conductor (3.4), and the conductive cylindrical shell (4.1) are all made of copper.

Images