Plug-in circuit breaker

Abstract

The utility model provides a plug-in circuit breaker, and relates to the technical field of power distribution equipment. Comprising a circuit breaker body and a base, an insertion column is arranged on the back of the circuit breaker body, an insertion hole matched with the insertion column is formed in the surface of the base, a containing groove is formed in the surface of the base, and a screw hole penetrating through the base is formed in the bottom of the groove; one end of the adjusting lead screw penetrates through the screw hole from the side opposite to the containing groove and extends into the containing groove to be movably connected with the push plate, the adjusting lead screw is in threaded connection with the screw hole, a sliding plate is arranged on the surface of the push plate, a splicing groove is formed in one side of the sliding plate, and a splicing base matched with the splicing groove is arranged on the back face of the circuit breaker body. According to the utility model, by rotating the adjusting screw rod, the adjusting screw rod and the base can rotate relatively under the threaded connection effect, and then the relative movement of the circuit breaker body and the base is realized through the relative sliding of the push plate and the sliding plate, so that the rapid insertion and disassembly are realized, and the disassembly and assembly are more labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution equipment, in particular to a plug-in circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions, and can close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague, and those above 3kV are generally called high-voltage electrical appliances. Circuit breakers can be divided into plug-in type, fixed type and drawer type according to the installation method.

[0003] Among them, compared with other types of circuit breakers, plug-in circuit breakers can be directly inserted into the guide rail or base, without the need for winding or welding. They have the advantages of simple and easy operation, high flexibility, and easy maintenance.

[0004] The wiring of the circuit breaker can be directly inserted, and the wiring removal operation is simple and convenient; at the same time, the locking mechanism is improved so that the circuit breaker cannot be closed at will outside the cabinet, but can be opened and closed freely inside the cabinet. The circuit breaker cannot be pulled out of the cabinet by parts other than the button, and the circuit breaker can be easily taken out of the cabinet by pulling the button, thereby ensuring the safety of installation and use of the circuit breaker; the circuit breaker is suitable for specific narrow spaces, and the problem of excessive local temperature rise of the circuit breaker is solved by rearranging the internal structure of the circuit breaker.

[0005] The invention patent with publication number CN107993900A proposes a plug-in miniature circuit breaker, including a housing (A), an outlet terminal (B), an inlet terminal (C), a button mechanism (D), an operating mechanism (G), an overload protection mechanism (H), an arc extinguishing mechanism (I), a short-circuit protection mechanism (J) and a signal terminal (K). The button mechanism (D) is linked with a locking device (E) and a fixed unlocking device (F), and the circuit breaker body is connected to the base by plugging the insertion column into the insertion hole. However, the circuit breaker body needs to be pressed down or lifted up with force during the disassembly process, and the installation and disassembly are relatively laborious, which makes it inconvenient to quickly replace the circuit breaker. In order to solve the above problems, a plug-in circuit breaker is proposed in this application. Utility Model Content

[0006] The utility model aims to provide a plug-in circuit breaker, which can rotate the adjusting screw rod so that the adjusting screw rod and the base rotate relative to each other under the action of the threaded connection, and then realize the relative movement of the circuit breaker body and the base through the relative sliding of the push plate and the slide plate, thereby realizing quick plugging and disassembly, making the disassembly and assembly more labor-saving, so as to solve the problems raised in the background technology.

[0007] The utility model provides a plug-in circuit breaker, comprising: a circuit breaker body and a base, the back of the circuit breaker body is provided with multiple groups of insertion columns extending therefrom, the surface of the base is provided with insertion holes adapted to be plugged and installed with the insertion columns, the surface of the base is provided with a receiving groove, the bottom of the receiving groove is provided with a screw hole penetrating the base, a push plate capable of moving along its axial direction is provided in the receiving groove, one end of an adjusting screw rod passes through the screw hole from a side opposite to the receiving groove and extends into the receiving groove to be movably connected with the push plate, the adjusting screw rod is threadedly connected with the screw hole, the surface of the push plate is provided with a slide plate slidably installed with the push plate, a splicing groove is provided on the side of the slide plate away from the push plate, and a splicing seat adapted to be installed with the splicing groove is provided on the back of the circuit breaker body.

[0008] Preferably, one end of the adjusting screw rod is rotatably connected to the middle part of the push plate, and the other end of the adjusting screw rod is fixed with a handle.

[0009] Preferably, the surface of the push plate is provided with parallelly arranged sliding grooves, and the surface of the sliding plate is provided with parallelly arranged sliding blocks which can be clamped in the sliding grooves and slide relatively thereto.

[0010] Preferably, the slide groove and the slider are dovetail-shaped or T-shaped with matching shapes.

[0011] Preferably, the splicing seat is fixed to the middle of the back side of the circuit breaker body, the base is I-shaped, the accommodating groove is opened in the middle of the base, and the position of the splicing seat corresponds to that of the accommodating groove, and the splicing groove is opened in the middle of the surface of the slide.

[0012] Preferably, the splicing seat and the splicing groove are both dovetail-shaped.

[0013] Preferably, the number of the insertion columns is six, which are symmetrically arranged at the top and bottom of the circuit breaker body, and the number and positions of the insertion holes correspond to the insertion columns.

[0014] Preferably, connecting plates are fixedly mounted on both ends of the base, and a plurality of insulating rods capable of extending into the insertion hole are arranged on the connecting plates.

[0015] Preferably, the end of the insulating rod is provided with an arc-shaped top plate capable of pressing the insertion column.

[0016] Preferably, the connecting plate is detachably connected to the base via a plurality of clamping screws.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] Before the insertion hole and the insertion column of the utility model are plugged in, the splicing seat and the splicing groove on the slide plate are installed in a coordinated manner, and the slide plate is installed in a coordinated manner with the push plate. By screwing out the adjusting screw rod, the push plate can drive the slide plate and the splicing seat to move toward one side of the base, and then the circuit breaker body is close to the base, so that the insertion column and the insertion hole are plugged in, and the installation and use of the circuit breaker is realized; when the adjusting screw rod is screwed in, the slide plate is pushed by the push plate to slide upward relative to the push plate and the splicing seat, so that the splicing seat is separated from the splicing groove, and the circuit breaker body can be quickly disassembled, making the disassembly and assembly more labor-saving and convenient, and the flexibility is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the plug-in circuit breaker of the utility model;

[0021] Figure 2 It is a schematic diagram of the rear view structure of the circuit breaker body of the plug-in circuit breaker of the utility model;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the plug-in circuit breaker of the utility model;

[0023] Figure 4 This is a schematic diagram of the base structure of the plug-in circuit breaker of the utility model;

[0024] Figure 5 It is a schematic diagram of the installation of the push plate of the plug-in circuit breaker of the utility model;

[0025] Figure 6 It is a schematic diagram of the sliding plate of the plug-in circuit breaker of the utility model;

[0026] Figure 7 It is a structural schematic diagram of the arc-shaped top plate and the connecting plate of the plug-in circuit breaker of the utility model;

[0027] Description of reference numerals:

[0028] 1. Circuit breaker body; 2. Base; 3. Insertion column; 4. Insertion hole; 5. Receiving groove; 6. Push plate; 7. Slide plate; 8. Splicing groove; 9. Splicing seat; 10. Slide groove; 11. Slider; 12. Adjusting screw rod; 13. Arc top plate; 14. Insulating rod; 15. Connecting plate; 16. Clamping screw rod. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] like Figure 1-6As shown, the utility model proposes a plug-in circuit breaker, comprising: a circuit breaker body 1 and a base 2, the front of the circuit breaker body 1 is provided with an insulating switch, the back of the circuit breaker body 1 is provided with a plurality of groups of insertion columns 3 extending therefrom, the insertion columns 3 are metal conductive columns, which are symmetrically arranged at the top and bottom of the back of the circuit breaker body 1, the surface of the base 2 is provided with insertion holes 4 adapted to be plugged and installed with the insertion columns 3, and the two can realize the conduction of the circuit, and the middle of the surface of the base 2 is provided with a receiving groove 5, and the receiving groove 5 is The receiving groove 5 is rectangular, and a screw hole penetrating the base 2 is provided at the bottom of the receiving groove 5. A push plate 6 that can move along its axial direction is provided in the receiving groove 5. One end of the adjusting screw rod 12 passes through the screw hole from the side of the base 2 away from the receiving groove 5 and extends into the receiving groove 5 to be movably connected with the push plate 6. The adjusting screw rod 12 is threadedly connected with the screw hole. A slide plate 7 slidably mounted thereon is provided on the surface of the push plate 6. A splicing groove 8 is provided on the side of the slide plate 7 away from the push plate 6. A splicing seat 9 adapted to be mounted with the splicing groove 8 is provided on the back of the circuit breaker body 1.

[0034] Specifically, one end of the adjusting screw rod 12 is rotatably connected to the middle part of the push plate 6, and a stepped groove with a wide bottom and a narrow mouth can be opened in the middle part of the push plate 6. A disc that can be confined to rotate in the stepped groove is set at the end of the adjusting screw rod 12. The two can cooperate to achieve relative rotation, avoiding the push plate 6 from rotating with the adjusting screw rod 12 when the adjusting screw rod 12 is rotated. A handle is fixed to the other end of the adjusting screw rod 12 to facilitate the rotation of the adjusting screw rod 12.

[0035] like Figure 5 , 6 As shown, specifically, two parallel slide grooves 10 are provided on the surface of the push plate 6, and a parallel slider 11 that can be clamped in the slide groove 10 and slide relative to the slide groove 10 is provided on the back surface of the slide plate 7. In this embodiment, the slide groove 10 and the slider 11 are both dovetail-shaped, that is, the cross-section of the slider 11 and the cross-section of the slide groove 10 are both dovetail-shaped. In other embodiments, the cross-section of the slider 11 and the cross-section of the slide groove 10 can also be set to be T-shaped.

[0036] In this embodiment, the splicing seat 9 is fixed to the middle of the back side of the circuit breaker body 1, the base 2 is I-shaped, the accommodating groove 5 is opened in the middle of the base 2, and the position of the splicing seat 9 corresponds to the position of the accommodating groove 5. The splicing seat 9 is arranged longitudinally, and its cross-section is dovetail-shaped. The splicing groove 8 is opened longitudinally in the middle of the surface of the slide plate 7, and the cross-section of the splicing groove 8 is also dovetail-shaped to match the splicing seat 9.

[0037] In this embodiment, the number of the insertion columns 3 is six, which are symmetrically arranged at the top and the bottom of the circuit breaker body 1 , and the number and positions of the insertion holes 4 correspond to those of the insertion columns 3 .

[0038] The operating principle of the circuit breaker in this embodiment is as follows:

[0039] Align the insertion column 3 with the insertion hole 4, assemble the circuit breaker body 1 and the base 2, screw in the adjusting screw 12, and push the push plate 6 out of the accommodating groove 5 under the action of the adjusting screw 12 being threadedly connected with the base 2, push the slide plate 7 upward, and make the splicing groove 8 correspond to the position of the splicing seat 9, press the slide plate 7 downward, and make the splicing groove 8 and the splicing seat 9 splice, and then screw out the adjusting screw 12 in the opposite direction again. Under the action of the adjusting screw 12 being threadedly connected with the base 2, the circuit breaker body 1 is pulled close to the base 2 through the push plate 6 and the slide plate 7, so that the insertion column 3 and the insertion hole 4 are quickly plugged;

[0040] When the circuit breaker body 1 is to be disassembled, the adjusting screw rod 12 is screwed in, so that the push plate 6 is pushed out of the receiving groove 5 to push the slide plate 7 upward, so that the splicing seat 9 is separated from the splicing groove 8, and the circuit breaker body 1 is disassembled.

[0041] Embodiment 2

[0042] like Figure 1 , 4 As shown in Figures 5 and 7, on the basis of the first embodiment, in this embodiment, connecting plates 15 are fixedly installed at both ends of the base 2, and a plurality of insulating rods 14 that can extend into the insertion hole 4 are arranged on the connecting plates 15. Arc grooves are provided on the end surfaces of both ends of the base 2, and the arc grooves penetrate the insertion hole 4. The insulating rods 14 extend into the insertion hole 4 through the arc grooves. The ends of the insulating rods 14 are fixedly or movably connected to the arc top plate 13. The connecting plates 15 are detachably connected to the base 2 through a plurality of clamping screws 16. Threaded holes are symmetrically provided on the surface of the connecting plates 15. Threaded holes corresponding to the positions of the clamping screws 16 are provided on the surfaces of both ends of the base 2. By rotating the clamping screws 16, the insulating rods 14 and the arc top plate 13 can be moved and pressed against the outer periphery of the insertion column 3.

[0043] In this embodiment, the working principle of the circuit breaker is as follows:

[0044] After the insertion column 3 and the insertion hole 4 are connected as in Example 1, the clamping screw 16 is rotated. Under the action of the surface thread, the clamping screw 16 pushes the arc top plate 13 close to the insertion column 3 through the connecting plate 15 and the insulating rod 14. The arc top plate 13 abuts against the surface of the insertion column 3, which can improve the tightness of the insertion column 3 and the inner wall of the insertion hole 4, and also avoid looseness between the insertion column 3 and the insertion hole 4, thereby improving the stability of the connection between the circuit breaker body 1 and the base 2.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A plug-in circuit breaker, characterized in that: include: A circuit breaker body and a base, wherein the back of the circuit breaker body is provided with multiple groups of insertion columns extending therefrom, the surface of the base is provided with insertion holes adapted to be plugged and installed with the insertion columns, the surface of the base is provided with a receiving groove, the bottom of the receiving groove is provided with a screw hole penetrating the base, a push plate capable of moving along its axial direction is provided in the receiving groove, one end of the adjusting screw rod passes through the screw hole from the side opposite to the receiving groove and extends into the receiving groove and is movably connected to the push plate, the adjusting screw rod is threadedly connected to the screw hole, the surface of the push plate is provided with a slide plate slidably installed therewith, a splicing groove is provided on the side of the slide plate away from the push plate, and a splicing seat adapted to be installed with the splicing groove is provided on the back of the circuit breaker body.

2. The plug-in circuit breaker according to claim 1, characterized in that One end of the adjusting screw rod is rotatably connected to the middle part of the push plate, and the other end of the adjusting screw rod is fixed with a handle.

3. The plug-in circuit breaker according to claim 1, characterized in that The surface of the push plate is provided with parallel sliding grooves, and the surface of the slide plate is provided with parallel sliding blocks which can be clamped in the sliding grooves and slide relatively thereto.

4. The plug-in circuit breaker according to claim 3, characterized in that The slide groove and the slider are dovetail-shaped or T-shaped with matching shapes.

5. The plug-in circuit breaker according to claim 1, characterized in that The splicing seat is fixed to the middle of the back side of the circuit breaker body, the base is I-shaped, the receiving groove is opened in the middle of the base, and the position of the splicing seat corresponds to the receiving groove, and the splicing groove is opened in the middle of the surface of the slide.

6. The plug-in circuit breaker according to claim 5, characterized in that The splicing seat and the splicing groove are both in a dovetail shape.

7. The plug-in circuit breaker according to claim 1, characterized in that The number of the insertion columns is six, which are symmetrically arranged at the top and bottom of the circuit breaker body, respectively, and the number and positions of the insertion holes correspond to the insertion columns.

8. The plug-in circuit breaker according to claim 1, characterized in that Connecting plates are fixedly mounted at both ends of the base, and a plurality of insulating rods capable of extending into the insertion holes are arranged on the connecting plates.

9. The plug-in circuit breaker according to claim 8, characterized in that The end of the insulating rod is provided with an arc-shaped top plate capable of pressing the insertion column.

10. The plug-in circuit breaker according to claim 8, characterized in that The connecting plate is detachably connected to the base via a plurality of clamping screw rods.

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