Molded case circuit breaker

Abstract

The utility model belongs to the technical field of circuit breakers, and relates to a molded case circuit breaker, which comprises a base, a limiting circular truncated cone arranged on the base, a gasket sleeved on the limiting circular truncated cone in a sliding manner and used for mounting a connecting plate, a buckling block arranged on the periphery of the gasket, and a buckling groove arranged on the base and matched with the buckling block, the top face of the buckling block is obliquely arranged in the rotating direction, an opening is formed in the side face of the buckling groove and the side wall adjacent to the side face in a communicating mode, so that the buckling block can be embedded along with rotation of the limiting circular truncated cone, and the top face of the buckling groove is further provided with an anti-disengaging block which can be connected with the rear edge of the buckling block in a clamped mode. Compared with the prior art, the rotary fixing of the liner is realized through the buckling blocks inclined along the rotating direction on the periphery of the liner and the buckling grooves on the base, and the connecting plate is connected through the liner, so that the mounting stability of the connecting plate is ensured, and meanwhile, the dismounting and the replacement are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers and relates to a molded case circuit breaker. Background Art

[0002] Existing molded case circuit breakers are divided into electronic molded case circuit breakers and thermal-magnetic molded case circuit breakers. The difference is generally in the bending shape and height of the connecting plate. The connecting plate is installed in the base, so the base is different. A variety of parts need to be adapted under the same frame, and the parts have low versatility. Utility Model Content

[0003] The utility model aims to provide a molded case circuit breaker with good versatility for connecting plates.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A molded case circuit breaker comprises a base, a limiting truncated platform arranged on the base, a liner with a sliding sleeve arranged on the limiting truncated platform and used for mounting a connecting plate, a buckle block arranged on the outer periphery of the liner, and a buckle groove arranged on the base and adapted to the buckle block;

[0006] The top surface of the buckle block is inclined along the rotation direction, and an opening is provided on the side surface of the buckle groove that is connected to the side wall adjacent to the side surface, so that the buckle block can be embedded as the limiting table rotates, and the top surface of the buckle groove is also provided with an anti-slip block that can be snapped with the rear edge of the buckle block.

[0007] Furthermore, a countersunk hole is provided at the bottom of the liner, and the countersunk hole cover is arranged on the limiting truncated platform and is slidably or gap-connected with the outer circumferential surface of the limiting truncated platform.

[0008] Furthermore, a through hole is provided on the liner along the direction of the rotating shaft, and the connecting plate is connected to the liner via screws passing through the through hole.

[0009] Furthermore, the outer side surface of the buckle block is an arc surface bent along the rotating square, and the inner wall along the depth direction of the buckle groove is a corresponding arc surface.

[0010] Furthermore, the arc center of the outer side surface and the arc center of the inner wall both fall on the rotation axis of the pad.

[0011] Furthermore, the lower side surface of the buckle block is flush with the bottom surface of the cushion.

[0012] Furthermore, the lower side surface of the anti-dropping block is an inclined surface adapted to the top surface of the buckle block.

[0013] Furthermore, the pad includes a cylindrical base and a cylindrical support platform disposed on the base.

[0014] Furthermore, the connecting plate is in a flat plate shape or an "X" shape.

[0015] Furthermore, the coupling plate is an electronic coupling plate or a thermal-magnetic coupling plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1) The utility model has strong versatility for the base, connecting plate and other parts of electronic molded case circuit breakers and thermal magnetic molded case circuit breakers. When only the gasket is replaced, one base can be adapted to connecting plates of different installation heights under the same frame, thereby increasing the versatility of parts.

[0018] 2) The utility model realizes the rotation fixation of the liner through the buckle blocks inclined along the rotation direction on the outer periphery of the liner and the buckle grooves on the base, and connects the connecting plate through the liner, which ensures the installation stability of the connecting plate and is also convenient for disassembly and replacement;

[0019] 3) The utility model supports the connecting plate through the liner and fixes it in the base with screws, so the structure is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the assembly of the electronic molded case circuit breaker base in the embodiment;

[0021] Figure 2 is a cross-sectional view of the assembly of the electronic molded case circuit breaker base in the embodiment;

[0022] Figure 3 1 is a schematic diagram of the assembly of the base of the thermal-magnetic molded case circuit breaker in the embodiment;

[0023] Figure 4 is a cross-sectional view of the base assembly of the thermal-magnetic molded case circuit breaker in the embodiment;

[0024] Figure 5 It is a schematic diagram of the structure of the base;

[0025] Figure 6 It is a structural schematic diagram of an electronic connection plate;

[0026] Figure 7 , Fig.13 It is a schematic diagram of the structure of the liner;

[0027] Figure 8 It is a schematic diagram of the structure of the thermal-magnetic coupling plate;

[0028] Fig. 9 yes Figure 5 A partial enlarged view of the middle A part;

[0029] Fig.10 It is a front cross-sectional view of the mating of the pad and the base;

[0030] Fig.11is a cross-sectional view of the slot;

[0031] Fig.12 It is a cross-sectional view of the matching of the slot and the buckle block;

[0032] Description of the markings in the figure:

[0033] 1-base, 11-limiting truncated cone, 12-through hole, 13-buckle groove, 131-anti-drop block, 132-inner wall, 2-electronic connecting plate, 21-first threaded hole, 3-screw, 4-gasket, 41-countersunk hole, 42-through hole, 43-buckle block, 431-outer side, 5-screw, 6-thermal magnetic connecting plate, 61-second threaded hole. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] In conjunction with the accompanying drawings, some embodiments of the present utility model are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0037] Example:

[0038] like Figure 1 or Figure 3 A molded case circuit breaker shown in the figure comprises a base 1, a limiting truncated platform 11 arranged on the base 1, a liner 4 which is provided on the limiting truncated platform 11 and is used to install a connecting plate, a buckle block 43 arranged on the outer periphery of the liner 4, and a buckle groove 13 arranged on the base 1 and adapted to the buckle block 43; wherein, as Figure 5 , Figure 7 , Fig. 9 , Fig.13 As shown, the top surface of the buckle block 43 is inclined along the rotation direction, and the side surface of the buckle groove 13 is connected to the side wall adjacent to the side surface and is provided with an opening.

[0039] When using, Figure 10-12 As shown, the buckle block 43 can be embedded as the limiting circular table 11 rotates, and the top surface of the buckle groove 13 is also provided with an anti-slip block 131 that can be snapped with the rear edge of the buckle block 43, thereby fixing the liner 4 on the base 1, and further ensuring that the connecting plate installed on the liner 4 is stably connected.

[0040] In some specific embodiments, a countersunk hole 41 is opened at the bottom of the liner 4, which is covered on the limiting truncated cone 11 and is slidably or gap-connected with the outer circumference of the limiting truncated cone 11, so that the liner 4 can rotate around the axis of the limiting truncated cone 11 better.

[0041] In some specific embodiments, a through hole 42 is opened on the gasket 4 along the rotation axis direction, and the connecting plate is connected to the gasket 4 by a screw 5 passing through the through hole 42, so that the connection between the connecting plate and the gasket 4 is relatively uniform with respect to the installation position of the base 1.

[0042] In some specific embodiments, the outer side surface 431 of the buckle block 43 is an arc surface curved along the rotating square, and the inner wall 132 along the depth direction of the buckle groove 13 is a corresponding arc surface. More preferably, the arc center of the outer side surface 431 and the arc center of the inner wall 132 both fall on the rotation axis of the liner 4.

[0043] In some specific embodiments, the lower side of the buckle block 43 is flush with the bottom surface of the liner 4 .

[0044] In some specific embodiments, the lower side surface of the anti-dropping block 131 is an inclined surface that matches the top surface of the buckle block 43 .

[0045] In some specific embodiments, the pad 4 includes a cylindrical base and a cylindrical support platform disposed on the base.

[0046] In some specific embodiments, the connection plate is in the shape of a flat plate or a cross, or the connection plate is an electronic connection plate 2 or a thermal magnetic connection plate 6. Figure 6 The flat electronic connection plate 2 shown, or Figure 8 The “X” shaped thermal magnetic coupling plate 6 is shown.

[0047] When in use, a limiting truncated cone 11 is provided on the base 1, a through hole 42 is opened on the limiting truncated cone 11, a buckle groove 13 is provided on the base 1, the limiting truncated cone 11 cooperates with the countersunk hole 41 on the liner 4 to limit the liner 4, the buckle block 43 is located on the left side of the buckle groove 13, and the liner 4 is rotated rightward with the axis of the through hole 12 as the rotation axis.

[0048] The inner wall 132 along the depth direction of the buckle groove 13 cooperates with the outer side surface 431 of the buckle block 43, and the buckle block 43 is rotated into the buckle groove 13. The anti-drop block 131 limits the side of the buckle block 43 to ensure that the liner 4 is locked in the base 1. The arc center of the inner wall 132 and the outer side surface 431 coincides with the axis of the through hole 42 to ensure smooth rotation. Figure 2 As shown, the screw 3 passes through the through hole 42 from the bottom of the base 1 and fixes the electronic connection plate 2 through the first threaded hole 21 .

[0049] In addition to the above installation methods, such as Figure 4As shown, the screw 5 may also be passed through the through hole 42 and the second threaded hole 61 to fix the thermal-magnetic coupling plate 6 .

[0050] The molded case circuit breaker base is used for electronic molded case circuit breakers and thermal magnetic molded case circuit breakers. The connection plate heights of the two molded case circuit breakers are different. The installation height of the connection plate is controlled by adjusting whether to install the gasket and the gasket height.

[0051] 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 molded case circuit breaker, characterized in that: The invention comprises a base (1), a limiting truncated platform (11) arranged on the base (1), a liner (4) which is provided with a sliding sleeve on the limiting truncated platform (11) and is used for mounting a connecting plate, a buckle block (43) arranged on the outer periphery of the liner (4), and a buckle groove (13) arranged on the base (1) and matched with the buckle block (43); The top surface of the buckle block (43) is arranged to be inclined along the rotation direction, and an opening is provided on the side surface of the buckle groove (13) and the side wall adjacent to the side surface so that the buckle block (43) can be embedded as the limiting truncated table (11) rotates. The top surface of the buckle groove (13) is also provided with an anti-slip block (131) that can be engaged with the rear edge of the buckle block (43).

2. The molded case circuit breaker according to claim 1, characterized in that: A countersunk hole (41) is provided at the bottom of the liner (4), and the countersunk hole (41) is covered on the limiting truncated platform (11) and is slidably or gap-connected with the outer peripheral surface of the limiting truncated platform (11).

3. The molded case circuit breaker according to claim 1, characterized in that: A through hole (42) is provided on the liner (4) along the direction of the rotating shaft, and the connecting plate is connected to the liner (4) via a screw (5) passing through the through hole (42).

4. The molded case circuit breaker according to claim 1, characterized in that: The outer side surface (431) of the buckle block (43) is an arc surface that is bent along a rotating square, and the inner wall (132) along the depth direction of the buckle groove (13) is in a corresponding arc shape.

5. The molded case circuit breaker according to claim 4, characterized in that: The arc center of the outer side surface (431) and the arc center of the inner wall (132) both fall on the rotation axis of the gasket (4).

6. The molded case circuit breaker according to claim 1, characterized in that: The lower side surface of the buckle block (43) is flush with the bottom surface of the liner (4).

7. The molded case circuit breaker according to claim 1, characterized in that: The lower side surface of the anti-slip block (131) is an inclined surface adapted to the top surface of the buckle block (43).

8. The molded case circuit breaker according to claim 1, characterized in that: The pad (4) comprises a cylindrical base and a cylindrical support platform arranged on the base.

9. The molded case circuit breaker according to claim 1, characterized in that: The connecting plate is in a flat plate shape or a "X" shape.

10. The molded case circuit breaker according to claim 1, characterized in that: The connection plate is an electronic connection plate (2) or a thermal magnetic connection plate (6).

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