Universal plug-in device of molded case circuit breaker

Abstract

The utility model relates to a universal plug-in device of a molded case circuit breaker. The universal plug-in device comprises a base, a plurality of cavities arranged on the base in parallel, and contact rod assemblies arranged in the cavities, wherein the cavity comprises a contact rod top receding groove, a limiting sinking table and a bottom side positioning hole which are sequentially connected from top to bottom, and the limiting sinking table comprises four side walls which are relatively parallel and adjacent and vertical; the contact rod assembly comprises a contact rod and a plurality of contact sheets which are wound on the contact rod in parallel along the circumferential direction; a positioning boss is arranged on the contact rod in the circumferential direction, four positioning planes which are relatively parallel and adjacent and perpendicular are arranged on the outer edge of the positioning boss, the four positioning planes and / or extension lines of the four positioning planes form a square structure, and the center of the square structure and the center of the contact rod are eccentrically arranged. And the positioning boss is embedded and limited on the limiting sinking table. Compared with the prior art, the utility model has the advantage that the installation angle of the part is easy to adjust, can meet the installation requirement of specific size, and has strong generality.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers and relates to a universal plug-in device for a molded case circuit breaker. Background Art

[0002] The distribution board can be equipped with circuit breakers, which need to be maintained or replaced in a controlled and timely manner. Due to the lack of modular or interchangeable circuit breaker design, many circuit breakers are not easy to replace. The circuit breaker plug-in device can replace the circuit breaker without changing the line wiring, shortening the power outage time when the circuit breaker is repaired and replaced, ensuring the quality of power supply and the safety of electricity use, and improving work efficiency.

[0003] The plug-in device of the circuit breaker is generally connected through a contact rod. During actual use, the installation position of the contact rod is basically fixed. As a result, in different actual use situations, circuit breakers of different specifications and different relative positions of contact rods need to be used. The plug-in device of the circuit breaker has poor versatility, resulting in high equipment use costs. Utility Model Content

[0004] The utility model aims to provide a universal plug-in device for a molded case circuit breaker with adjustable relative positions of multiple contact rods.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A universal plug-in device for a molded case circuit breaker comprises: a base, a plurality of cavities arranged in parallel on the base, and a contact rod assembly arranged in the cavity;

[0007] The cavity includes a contact rod top clearance groove, a limit sink platform, and a bottom positioning hole connected in sequence from top to bottom, and the limit sink platform includes four relatively parallel, adjacent and vertical side walls;

[0008] The contact rod assembly comprises a contact rod and a plurality of contact sheets arranged in parallel along the circumferential direction on the contact rod; a positioning boss is arranged along the circumferential direction on the contact rod, and four relatively parallel, adjacent and vertical positioning planes are arranged on the outer edge of the positioning boss; the four positioning planes and / or their extension lines form a square structure, and the center of the square structure is eccentrically arranged with the center of the contact rod;

[0009] The positioning boss is embedded and limited on the limiting sink; a plurality of contact pieces are arranged in the giving way groove at the top of the contact rod.

[0010] Further, the positioning boss is cylindrical, and is cut along the chord of the bottom circle to form four relatively parallel, adjacent and vertical positioning planes;

[0011] The four positioning planes are sequentially recorded as a first section plane, a second section plane, a third section plane, and a fourth section plane along the circumferential direction of the positioning boss.

[0012] Further, the distance from the first section to the center of the contact rod is smaller than the distance from the third section to the center of the contact rod;

[0013] The distance from the second section to the center of the contact rod is greater than the distance from the fourth section to the center of the contact rod.

[0014] Further, the distance from the first section to the center of the contact rod is equal to the distance from the third section to the center of the contact rod;

[0015] The distance from the second section to the center of the contact rod is greater than the distance from the fourth section to the center of the contact rod.

[0016] Further, the distance from the first section to the center of the contact rod is greater than the distance from the third section to the center of the contact rod;

[0017] The distance from the second section to the center of the contact rod is greater than the distance from the fourth section to the center of the contact rod.

[0018] Furthermore, the lower portion of the contact rod is arranged in the bottom side positioning hole; the lower portion of the contact rod is cylindrical, and correspondingly, the bottom side positioning hole is a waist-shaped hole.

[0019] Furthermore, the long axis of the cross section of the oval hole is arranged parallel to a pair of side walls among the four side walls and is located on the symmetry plane of the pair of side walls; or, the long axis of the cross section of the oval hole is arranged obliquely relative to the four side walls.

[0020] Furthermore, three cavities are arranged in parallel on the base.

[0021] The bottom side positioning hole in the middle cavity has a cross-sectional major axis of its oblong hole arranged parallel to a pair of side walls among the four side walls; the bottom side positioning holes in the cavities on both sides are arranged symmetrically about the bottom side positioning hole in the middle, and the cross-sectional major axis of their oblong holes is arranged obliquely relative to the four side walls.

[0022] Furthermore, the contact piece is in an arcuate shape and includes an inner recessed portion provided on an outer side wall of the end portion.

[0023] The inner concave parts of the multiple contact pieces are arranged along the circumference of the contact rod to form an inner groove.

[0024] The ends of a plurality of contact sheets are assembled on the contact rod through a spring ring arranged in the inner groove.

[0025] As a preferred technical solution, both ends of the contact piece are provided with inner recesses.

[0026] Furthermore, the contact rod assembly also includes a ring piece sleeved on the contact rod, and a clamping groove is provided on the inner side of the contact piece and is clamped to the outer edge of the ring piece.

[0027] As a preferred technical solution, a circular arc groove is further provided on the side wall of the contact rod along the circumferential direction, and the annular sheet is sleeved on the circular arc groove.

[0028] As a preferred technical solution, an arc extinguishing hood is further provided on the cavity, and an opening for exposing the contact rod assembly is also provided on the arc extinguishing hood.

[0029] As a preferred technical solution, the device further comprises a bracket, and two bases are provided and symmetrically arranged on both sides of the bracket.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] The utility model realizes the positioning installation of the base and the contact rod by the shape limiting snap-fitting effect between the limiting sinker arranged on the inner cavity of the base and the positioning boss arranged on the contact rod. At the same time, a square positioning structure and a square positioning matching structure are formed by designing the limiting sinker and the positioning boss to have four relatively parallel, adjacent and vertical side walls, and the square positioning matching structure of the positioning boss is eccentrically arranged relative to the contact rod, so that when the contact rod is installed on the base, there are at least two assembly positions, that is, while meeting the effective positioning installation of the contact rod, it also has the advantage of easy adjustment of the installation angle of the parts, can meet the installation requirements of specific sizes, has strong versatility, does not need to additionally design a specific size structure, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a universal plug-in device for a molded case circuit breaker in an embodiment;

[0033] Figure 2 is a schematic diagram of the structure of the bracket;

[0034] Figure 3 This is a schematic diagram of the main structure of the base;

[0035] Figure 4 is a schematic diagram of the three-dimensional structure of the base;

[0036] Figure 5 is a schematic diagram of the structure of the contact rod assembly;

[0037] Figure 6 is a schematic diagram of the structure of the contact rod (the contact head is not shown);

[0038] Figure 7 It is a schematic diagram of the structure of a type A contact rod;

[0039] Figure 8 It is a schematic diagram of the structure of a type B contact rod;

[0040] Fig. 9 It is a schematic diagram of the structure of a type C contact rod;

[0041] Fig.10 A schematic structural diagram of a universal plug-in device for a molded case circuit breaker in a first assembly state;

[0042] Fig.11 A schematic structural diagram of a universal plug-in device for a molded case circuit breaker in a second assembly state;

[0043] Description of the markings in the figure:

[0044] 11-base, 1111-cavity A, 1112-cavity B, 1113-cavity C, 1114-base plane, 1115-contact rod top clearance groove, 1116-limiting sink, 1117-bottom side positioning hole,

[0045] 12-Stand,

[0046] 13-contact rod assembly, 131-contact rod, 1311-first section, 1312-second section, 1313-third section, 1314-fourth section, 1315-plane, 132-contact sheet,

[0047] 14-Arc extinguishing hood. DETAILED DESCRIPTION

[0048] The following embodiments are implemented based on the above technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following embodiments.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0051] Example:

[0052] like Figure 1 The universal plug-in device for molded case circuit breakers shown in FIG. 1 mainly consists of three parts, a base 11, a bracket 12 and a connecting bar. An identical base 11 is placed at each end, and the two are connected by Figure 2 The bracket 12 shown is connected and fixed. A connecting row can be connected below the base 11. The base 11 has a plurality of different cavities inside, and a plurality of contact rod assemblies 13 and arc extinguishing covers 14 can be placed correspondingly.

[0053] like Figure 3 , Figure 4As shown, the base 11 is provided with a plurality of cavities for placing the contact rod assembly 13, and the cavity A1111, cavity B1112 and cavity C1113 are all different. Cavity A1111 has a vertical waist circular hole on the right, cavity B1112 has a vertical waist circular hole, and cavity C1113 has a vertical waist circular hole on the left; cavities A, B, and C are divided into three layers, wherein layer I is a groove formed by two semicircles and a square depression, which is the main space for placing the contact rod assembly 13, and the arc extinguishing cover 14 can also be placed on the top of layer I; layer II is a small step formed by square and circular depressions, which is used to support the contact rod assembly 13; layer III is a waist circular hole.

[0054] like Figure 5 As shown, the contact rod assembly 13 is divided into two parts, one is the contact rod 131, and the other is the contact sheet 132. Figure 6 As shown, the contact rod 131 is divided into a three-layer structure, the top layer is a cylinder with a circular arc groove opened in the circumferential direction on the side wall; the middle layer body is also a cylinder, and the four orthogonal sides of the outer arc surface of the middle layer cylinder are cut in the horizontal and vertical directions to form a plane. When the contact rod assembly 13 is placed in the cavity of the base 11, the cross-section of the middle layer of the contact rod 131 can cooperate with the II-layer step surface of the cavity of the base 11, so that the contact rod assembly 13 will not shake; the bottom layer is a cylinder with an internal thread in the center.

[0055] According to different sections, the contact rod 131 is provided in three types, type A contact rod, such as Figure 7 As shown, the first section 1311 is larger than the third section 1313, that is, the distance from the first section 1311 to its center is closer than the distance from the third section 1313 to its center, and the second section 1312 is smaller than the fourth section 1314, that is, the distance from the second section 1312 to its center is farther than the distance from the fourth section 1314 to its center; Class B contact rod, such as Figure 8 As shown, the first section 1311 is the same as the third section 1313, that is, the distance from the first section 1311 to its center is the same as the distance from the third section 1313 to its center, and the fourth section 1314 is larger than the second section 1312, that is, the distance from the fourth section 1314 to its center is closer than the distance from the second section 1312 to its center; Class C contact rod, such as Fig. 9 As shown, the first section 1311 is smaller than the third section 1313, that is, the distance from the first section 1311 to its center is farther than the distance from the third section 1313 to its center, and the second section 1312 is smaller than the fourth section 1314, that is, the distance from the second section 1312 to its center is farther than the distance from the fourth section 1314 to its center.

[0056] The base 11 is provided with a plurality of separate base planes 1114 at the same height, i.e., the bottom surface of the sink, i.e., the small step surface of the cavity II layer, for placing the contact rod 131; the contact rod 131 is provided with a plane 1315, i.e., the bottom surface of the middle layer cylinder, for fixing to the base 11; the contact rod 131B has the same cross-section size in one direction, so when the contact rod 131 is placed in the base 11 and rotated 180°, only the size B or the size D changes, such as Fig.10 , Fig.11 As shown in the comparison; the cross-sectional sizes of the contact rods 131A and C in two directions are different, so when the contact rod 131 is placed in the base 11 and rotated 180°, the size changes in two directions will occur, such as Fig.10 or Fig.11 The dimensions A and B, or dimensions C and D are shown in FIG. When the contact rods A, B, and C are respectively installed into the cavity of the base 11 at a specific angle, the contact rods A, B, and C are respectively installed into the cavity of the base 11 at a specific angle. Figure 1 As shown, according to the design of the size of the cross section of the contact rod 131, the requirements for specific dimensions A and B can be met; similarly, the design can be designed to meet Figure 2 For specific dimensions C and D requirements.

[0057] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A universal plug-in device for a molded case circuit breaker, characterized in that: include: A base (11), a plurality of cavities arranged in parallel on the base (11), and a contact rod assembly (13) arranged in the cavity; The cavity comprises a contact rod top clearance groove (1115), a limiting sink platform (1116), and a bottom positioning hole (1117) which are sequentially connected from top to bottom, and the limiting sink platform (1116) comprises four relatively parallel, adjacent and vertical side walls; The contact rod assembly (13) comprises a contact rod (131) and a plurality of contact sheets (132) arranged in parallel along the circumferential direction on the contact rod (131); a positioning boss is arranged along the circumferential direction on the contact rod (131); the outer edge of the positioning boss is provided with four relatively parallel, adjacent and perpendicular positioning planes; the four positioning planes and / or their extension lines form a square structure; the center of the square structure is eccentrically arranged with respect to the center of the contact rod (131); The positioning boss is embedded and limited on the limiting sink (1116); A plurality of contact pieces (132) are arranged in the clearance groove (1115) at the top of the contact rod.

2. The universal plug-in device for molded case circuit breaker according to claim 1, characterized in that: The positioning boss is cylindrical, and is cut along the chord of the bottom circle to form four relatively parallel, adjacent and vertical positioning planes; The four positioning planes are sequentially recorded as a first section plane (1311), a second section plane (1312), a third section plane (1313), and a fourth section plane (1314) along the circumferential direction of the positioning boss.

3. The universal plug-in device for molded case circuit breaker according to claim 2, characterized in that: The distance from the first section (1311) to the center of the contact rod (131) is smaller than the distance from the third section (1313) to the center of the contact rod (131); The distance from the second section (1312) to the center of the contact rod (131) is greater than the distance from the fourth section (1314) to the center of the contact rod (131).

4. The universal plug-in device for molded case circuit breaker according to claim 2, characterized in that: The distance from the first section (1311) to the center of the contact rod (131) is equal to the distance from the third section (1313) to the center of the contact rod (131); The distance from the second section (1312) to the center of the contact rod (131) is greater than the distance from the fourth section (1314) to the center of the contact rod (131).

5. The universal plug-in device for molded case circuit breaker according to claim 2, characterized in that: The distance from the first section (1311) to the center of the contact rod (131) is greater than the distance from the third section (1313) to the center of the contact rod (131); The distance from the second section (1312) to the center of the contact rod (131) is greater than the distance from the fourth section (1314) to the center of the contact rod (131).

6. The universal plug-in device for molded case circuit breaker according to claim 1, characterized in that: The lower portion of the contact rod (131) is arranged in the bottom side positioning hole (1117); the lower portion of the contact rod (131) is cylindrical, and correspondingly, the bottom side positioning hole (1117) is a waist-shaped hole.

7. The universal plug-in device for molded case circuit breaker according to claim 6, characterized in that: The long axis of the cross section of the oblong hole is arranged parallel to a pair of side walls among the four side walls and is located on the symmetry plane of the pair of side walls; or, the long axis of the cross section of the oblong hole is arranged obliquely relative to the four side walls.

8. The universal plug-in device for molded case circuit breaker according to claim 6, characterized in that: The base (11) is provided with three cavities in parallel. The bottom side positioning hole (1117) in the middle cavity has a cross-sectional major axis of its oval hole arranged parallel to a pair of side walls among the four side walls; the bottom side positioning holes (1117) in the cavities located on both sides are arranged symmetrically with respect to the bottom side positioning hole (1117) in the middle, and the cross-sectional major axis of their oval holes is arranged obliquely relative to the four side walls.

9. The universal plug-in device for molded case circuit breaker according to claim 1, characterized in that: The contact piece (132) is arcuate and includes an inner concave portion provided on the outer side wall of the end portion. The inner concave portions of the plurality of contact sheets (132) are arranged along the circumference of the contact rod (131) to form an inner groove. The ends of the plurality of contact sheets (132) are assembled on the contact rod (131) via a spring arranged in an inner groove.

10. The universal plug-in device for molded case circuit breaker according to claim 9, characterized in that: The contact rod assembly (13) further comprises a ring piece sleeved on the contact rod (131); a clamping groove is provided on the inner side of the contact piece (132) and is clamped to the outer edge of the ring piece.

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