WO2017215453A1

WO2017215453A1 - Circuit breaker and operating mechanism for same

Info

Publication number: WO2017215453A1
Application number: PCT/CN2017/086921
Authority: WO
Inventors: 蔡永涛; 项素明; 武军亮
Original assignee: 伊顿电气有限公司
Priority date: 2016-06-15
Filing date: 2017-06-02
Publication date: 2017-12-21
Also published as: CN205863104U

Abstract

Provided are a circuit breaker and an operating mechanism. The circuit breaker comprises: a base (130) with a mounting hole (131, 132), a stationary contact fixedly mounted on the base (130), a spindle (80) rotatably mounted on the base (130), a movable contact (150) rotatable with the spindle (80) in order to selectively engage with or disengage from the stationary contact, and an operating mechanism (500) for operating the rotation of the spindle (80), wherein the operating mechanism (500) comprises a support frame (10), the support frame (10) comprising a mounting structure mounted with the mounting hole (131, 132) of the base (130) in a fitted manner, the mounting structure comprising a deformable part (113, 123) configured to be able to deform torsionally so as to form a press interference-fit with the mounting hole (131, 132) and a torsional end part (112, 122) configured to be able to be operated in a torsional manner. The circuit breaker achieves effective mounting of the support frame and the base, is easy to operate, convenient, saving on effort, and firm and reliable.

Description

Circuit breaker and circuit breaker operating mechanism

Technical field

The present invention relates to the field of circuit breaker technology, and more particularly to a plastic case circuit breaker and an operating mechanism for the plastic case type circuit breaker.

Background technique

At present, the operating mechanism of the plastic case circuit breaker and the base are generally connected in such a manner that the connection between the operating mechanism and the base is usually connected by screws. Specifically, this method is to turn the left and right support plates (more is to make the left and right support plates into one piece), and to stretch a certain depth of thread, and to open a certain volume of the positioning groove on the base, through the base The screw is attached to the base at the bottom (there is also an insert on the base to fasten the screw from the front). In this way, the function volume is relatively large due to the relatively large number of two features.

There is also a plastic member that is inserted into the base and pressed and positioned by the upper cover. The connection of the complete mechanism does not have a screw. After the mechanism is assembled, it is positioned on the left and right side plates of the plastic, and the left and right side plates are stuck in the corresponding slots of the base through the close cooperation with the base, and then the side plates are tightly pressed into the base through the upper casing, thereby realizing the whole The positioning of the organization. In this way, in actual operation, due to the deviation of the accuracy of the relevant parts, and due to the large impact force of the operating mechanism during the operation, the operating mechanism is often caused to shake along the moving direction of the movable contact, which is disadvantageous to the product. Stable.

In addition, the operating mechanism of the existing circuit breaker generally has four connecting rods, and the connection between the mechanism and the rotating main shaft is generally realized by the upper and lower connecting rods. That is, two substantially parallel upper links are sleeved on both sides of the mechanism, and then the upper and lower links are connected by one shaft, and the lower link is placed on the main shaft through the other shaft, thus generating upper and lower Two pairs of connecting rods and two connecting shafts and other parts, the number of parts is large, and the volume is large.

Summary of the invention

The present invention is directed to a plastic case circuit breaker in which the mounting between the operating mechanism and the base is simple and robust. The present invention also provides an operating mechanism for the plastic case type circuit breaker.

According to an aspect of the invention, a circuit breaker is provided, comprising a base with a mounting hole, a stationary contact fixedly mounted on the base, a spindle rotatably mounted on the base, and the spindle a moving contact that is selectively engaged or disengaged with the stationary contact and an operating mechanism that operates the spindle to rotate, wherein the operating mechanism includes a support bracket that includes a mounting for mating with a mounting hole of the base A mounting structure includes a deformation portion configured to be torsionally deformed to form a compression interference fit with the mounting hole and an end torsion portion configured to be twisted.

By simply screwing the deformation portion to form an interference fit with the mounting hole, the support frame and the base are effectively installed, and the operation is simple, firm and reliable. The invention also twists the deformation portion by twisting the end torsion portion under the base, thereby facilitating the twisting operation and labor saving.

Preferably, the end twist is configured as a lower stop. Thereby, the deformation portion is further prevented from coming out of the mounting hole in a direction opposite to the direction in which it is inserted into the mounting hole, that is, in the upward direction.

Preferably, the mounting structure is a metal piece or comprises a metal part, the mounting structure further comprises a large-sized portion located above the deformation portion, and the deformation portion is constricted by the large-sized portion and the end-side torsion portion The department is limited. Here, the deformation portion is defined by the most deformable reduced diameter portion of the mounting structure, the structure is simple, and the mounting structure is easily formed.

Preferably, the mounting bore has an interference squeezing section having a rectangular section in cross section and an arcuate section for forming a press fit with the deformation. Thereby the end torsion can pass through the interference extrusion section and allow the deformation to pass through the arcuate section to form an interference fit with the arcuate section after the deformation is twisted. The curved section facilitates the twisting of the deformation portion.

Preferably, the mounting aperture further includes a receiving section for receiving the end twist. Therefore, the end twist portion can be accommodated in the accommodating portion after passing through the interference squeezing portion, so that the end twist portion does not protrude from the outer surface of the base, and further prevents the end portion from being twisted. Undesirable torsion caused by external forces such as external friction or torsion caused by the outer surface of the base, thereby further ensuring a reliable installation with the base.

Preferably, the mounting hole further includes an introduction section for introducing the mounting structure above the interference squeezing section. Thereby, in the mounted state, the large-sized portion of the mounting structure can be partially located in the introduction portion, the deformation portion being at least partially situated in the curved portion and the end-turning portion being located in the receiving portion. Moreover, the use of such a structure facilitates the introduction of the mounting structure into the interference squeezing section and facilitates the deformation of the deformation portion by the engagement of the, for example, a rectangular lead-in section and prevents other portions above the deformation portion from being twisted. Deformation occurred.

Preferably, the arcuate section is defined by a circular arc having a first diameter and the receiving section is a circular aperture having a second diameter greater than the first diameter. This is more conducive to shaping and to facilitate the reversal.

Preferably, the support frame includes a first support plate and a second support plate disposed in parallel, wherein the bottom ends of the first support plate and the second support plate are each provided with a mounting structure. This embodiment provides a support frame A concrete example is simple in structure.

Preferably, the main shaft has annular first flanges and second flanges, the first support plate has a first curved support portion supported on the first flange, and the second support plate has a second support plate a second curved support above the flange. Thereby the relative rotation of the main shaft relative to the first and second support plates is effectively achieved.

Preferably, the operating mechanism comprises a first drive link, a second drive link and a connecting shaft connected to the ends of the first and second drive links, the main shaft defining a socket mounted in cooperation with the connecting shaft, the socket A rotary support portion that supports the connection shaft and is movable with the connection shaft, and an introduction throat that guides the connection shaft into the rotation support portion. This embodiment reduces a plurality of parts with respect to the prior art, and the same technical effects can be achieved. In addition, the connecting shaft is simple to install and is easy to operate only by introducing the connecting shaft from the introduction throat to the rotating support portion.

As a specific example, the rotary support has a circular arc-shaped cross section that matches the connecting shaft, thereby effectively ensuring a transmission connection between the main shaft and the connecting shaft.

Preferably, the introduction throat is defined by a pair of extended arcs extending to both ends of the rotation support portion, the pair of extension arcs having a radius greater than the rotation support portion. The spindle in this embodiment can be injection molded, and it is easy to mount the connecting shaft into the rotary support.

Effectively, as a specific example, the above circuit breaker is a plastic case type circuit breaker.

According to another aspect of the present invention, there is provided a circuit breaker operating mechanism mounted on a mounting hole of a base of a circuit breaker and for operating rotation of a main shaft of the circuit breaker, the operating mechanism including a support frame including a mounting structure The mounting structure includes a deformation portion configured to be twist-wrapped to form a compression interference fit with the mounting hole and an end torsion portion configured to be twisted.

Preferably, the end twist is configured as a lower stop.

Preferably, the mounting structure is a metal piece or includes a metal portion, the mounting structure further includes a large-sized portion located above the deformation portion, and the deformation portion is defined by the constricted portion between the large-sized portion and the end-tipped portion.

DRAWINGS

The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the invention. among them,

Figure 1 shows a perspective view of a plastic case circuit breaker in an installed state, in which the operating mechanism, the main shaft and the base are highlighted to clearly show the embodiment;

Figure 2a shows a top view of the base of Figure 1;

Figure 2b is a longitudinal cross-sectional view of the one of the mounting holes of the base taken along the center line in the width direction;

Figure 3 shows a perspective view of the operating mechanism shown in Figure 1;

Figure 4 shows a side perspective view of the operating mechanism of Figure 3;

Figure 5 is a bottom plan view showing the circuit breaker of Figure 1 in an installed state, in which the positional relationship between the end twist portion and the mounting hole is highlighted;

Figure 6 shows a perspective view of the spindle of Figure 1;

Figure 7 is a perspective view showing the operating mechanism and the main shaft and the movable contact in a mounted state;

Fig. 8 shows a perspective view of Fig. 7 as seen from another direction.

detailed description

DETAILED DESCRIPTION OF THE INVENTION A schematic illustration of the apparatus of the present invention will now be described in detail with reference to the accompanying drawings. The drawings are provided to present some embodiments of the present invention, but the drawings are not necessarily drawn to the dimensions of the specific embodiments, and some features may be enlarged, removed, or partially cut to better illustrate and explain the present invention. Public content. The appearances of the phrase "in the drawings"

In the following, certain directional terms are used to describe the figures, such as "upper", "lower", "upward", "downward", "front", "back", "left", "right", " Axial, "radial" and other directional terms are to be understood as having their normal meaning and refer to those directions that are normally referred to in the drawings.

As shown in Figures 1-5, a circuit breaker of one embodiment of the present invention is, for example, in the form of a plastic housing circuit breaker that includes a base 130 (Figures 1, 2a, 2b, and 5) having two spaced apart arrangements Mounting holes 131, 132 (Fig. 5). 5 shows a bottom view of the mounting

holes

131, 132.

The circuit breaker also includes a stationary contact (not shown) fixedly mounted to the base 130, a spindle 80 (FIG. 1) rotatably mounted on the base 130, rotatable with the spindle 80 to selectively engage the static The movable contact 150 (Fig. 7) in which the contact is engaged or disengaged and the operating mechanism 500 (Figs. 3 and 4) that operates the rotation of the main shaft 80.

In the present embodiment, the operating mechanism 500 includes a support frame 10 and a rocker arm 20 mounted on the support frame 10, a spring 30 having a one end hook on the rocker arm 20, and a connecting shaft connected to the other end of the spring 30. 60. A jumper 40 that can be driven by the rocker arm 20, a buckle 90 that can be engaged and disengaged with the jumper 40, and a buckle for refastening the buckled buckle 40 and the buckle 90 70 and a first drive link 51 and a second drive link 52. The embodiment further includes an upper cover (not shown) such that each portion is sandwiched between the base 130 and the upper cover.

In this embodiment, the support frame 10 includes a first support plate 11 and a second support plate 12 supported on the left and right sides (Fig. 3) of the entire operating mechanism 500. Wherein, the jumper 40 has two legs, and the front end of each leg is pivotally connected to the first support plate 11 and the second support plate 12 through the pin shaft 110 as shown in FIG. 4, respectively. The two legs of the jumper 40 are respectively provided with link accommodating portions for accommodating one ends of the first drive link 51 and the second drive link 52 (ie, the upper end in FIG. 3) and can drive the first and second drives The

links

51, 52 move together so that the first and second drive links 51, 52 can drive the connecting shaft 60 to rotate.

In the present embodiment, the first support plate 11 and the second support plate 12 are respectively provided with a rocker arm support portion for supporting the bottom end of the rocker arm 20 and providing a pivot point for the rocker arm 20, so that the rocker arm 20 can be first Rotating under the support of the

second support plates

11, 12. Further, since the spring 30 is coupled between the upper end of the rocker arm 20 and the connecting shaft 60, the connecting shaft 60 and the rocker arm 20 can be driven by the spring 30. Thus, when the rocker arm 20 is rotated counterclockwise as shown in FIG. 4, the rocker arm 20 will drive the jumper 40 to rotate counterclockwise, and the jumper 40 will drive the first and second drive links 51, 52 to rotate counterclockwise. At the same time, as the rocker arm 20 rotates, its rotational power is also transmitted to the connecting shaft 60 through the spring 30, so that the connecting shaft 60 is reversed by the action of the spring 30 and the first and second driving links 51, 52. The hour hand rotates to drive the main shaft 80 to rotate counterclockwise, so that the main shaft 80 rotates the movable contact 150 to the closing position engaged with the stationary contact.

Since the opening and closing operations are known in the art, other processes such as opening, opening, and refasting will not be described herein. It should be understood that the other ends of the first driving link and the second driving link opposite to the connecting shaft 60 in this embodiment may also be combined with any other suitable transmission mechanism other than the above mechanism to realize the first Rotation of a drive link and a second drive link.

Specifically, in the present embodiment, the first support plate 11 and the second support plate 12 have main bodies 111, 121 (FIG. 3) and a mounting structure for fitting with the corresponding mounting

holes

131, 132 of the base 130, respectively. Wherein, the mounting structure includes

deformation portions

113, 123 that can be inserted into the mounting

holes

131, 132 and can be twisted and deformed to form a compression interference fit with the mounting

holes

131, 132, and one end of the deformation portion (lower end in the figure) And the

end torsion portions

112, 122 for performing the twisting operation. And preferably, the

end twisting portions

112, 122 are formed as a first end stop portion through which a portion of the mounting

holes

131, 132 that forms an interference fit with the

deformation portions

113, 123 after the completion of the twisting operation is called It is the lower stop. Preferably, the mounting structure is a metal member or a metal portion, and the mounting structure further includes large-

sized portions

114, 124 at the other end of the deforming

portions

113, 123, and is deformed The

portions

113, 123 are defined by the constricted portion between the large-

sized portions

114, 124 and the end-

twist portions

112, 122.

Preferably, the first support plate 11 and in particular the mounting structure are preferably made of metal, for example made of steel. And preferably, the first and

second support plates

11, 12 are each integrally formed of a steel material integrally and preferably have a uniform thickness, that is, a first thickness. And the

end torsion portions

112, 122 and the

deformation portions

113, 123 may each have a rectangular cross section. And the

deformation portion

113, 123 has a first width, the end torsion portion has a second width greater than the first width, and at least the position of the large-

sized portions

114, 124 connected to the

deformation portions

113, 123 is greater than The third width of a width. Thereby, the deformation portion having the smaller first width is most easily deformed by the torsion. Preferably, the large-sized portion is formed as a part of the

bodies

111, 121. Preferably, an upper stop structure that restricts the first support plate 11 and the second support plate 12 from further entering the mounting

holes

131, 132 may be provided on the main body (including the large-sized portion). For example, the large-sized portion may have a size larger than the mounting

holes

131, 132 so that it is itself formed as the upper stop structure. Alternatively, the upper stop structure may be formed by other portions of the

bodies

111, 121.

Preferably, as shown in Figures 2b and 5, the mounting

apertures

131, 132 can have interference compression segments 1310, 1320 along the direction of insertion of the mounting structure. The interference squeezing sections 1310, 1320 include

rectangular sections

1311, 1321 in a direction perpendicular to the insertion direction, and curved sections for accommodating the

deformation portions

113, 123 and forming a press fit with the

deformation portions

113, 123. 1312, 1322. As shown in FIG. 5, preferably, the

rectangular sections

1311, 1321 can have a rectangular section thickness that matches the first thickness and a rectangular section width that matches the second width. The

curved sections

1312, 1322 are defined by arcs having a first diameter that matches the first width. However, the

curved sections

1312, 1322 may also be defined by other shapes, such as an ellipse, a parabola, etc., and may even have a shape such as a polygon, as long as it can form an interference fit with the deformation portion after the deformation portion is deformed. None of them depart from the scope of protection of the present invention. The

curved sections

1312, 1322 are preferably centrally located on the

rectangular sections

1311, 1321. However, it can be understood that the

curved sections

1312, 1322 can also be located at other intermediate positions of the

rectangular sections

1311, 1321 or can be located at one end of the

rectangular sections

1311, 1321, depending on the

deformations

113, 123 and other parts. The positional relationship depends.

Preferably, as shown in Figures 2b and 5, the mounting

holes

131, 132 may also include downstream end portions of the interference squeezing portions 1310, 1320 in the insertion direction (downward) for receiving the

end twist portions

112, 122. The

segments

1314, 1324 are received. Thus, after the

end twisting portions

112, 122 pass through the interference squeezing sections 1310, 1320, they can be received in the receiving

sections

1314, 1324 such that the

end twisting portions

112, 122 do not protrude from the base 130. The outer surface makes the appearance cleaner and further prevents the cause The

end twisting portions

112, 122 protrude from the outer surface of the base 130 to cause undesired twisting due to an external force such as an external frictional force or a torsional force, thereby further ensuring a reliable mounting with the base 130.

Preferably, as shown in Figures 2b and 5, the receiving

sections

1314, 1324 are preferably circular apertures having a second diameter, wherein the second diameter is greater than the first diameter. The second diameter can be greater than or equal to the second width. And preferably greater than the second width to facilitate screwing the end twist. It will be understood, however, that the receiving

sections

1314, 1324 can have other shapes, such as rectangular, elliptical, triangular, etc., as long as they can accommodate the end twists 112, 122 and allow the ends. The torsion portion can be rotated therein.

Preferably, as shown in Figure 2b, the mounting

apertures

131, 132 may also include lead-in sections 1313, 1323 located upstream of the interference compression sections 1310, 1320 in the insertion direction and for introduction into the mounting structure. The lead-in sections 1313, 1323 may be defined by two ribs 1315 and 1316 and 1325 and 1326 arranged in parallel above the interference squeezing sections 1310, 1320, or more preferably, the lead-in sections 1313, 1323 may be arranged in a rectangular shape. The four ribs are defined such that the lead-in sections 1313, 1323 have a rectangular cross section. Thereby, it is convenient to introduce the mounting structure into the interference pressing sections 1310, 1320 and to facilitate the deformation of the

deformation portions

113, 123 by the cooperation of the lead-in sections 1313, 1323 which are, for example, rectangular, and can be prevented from being located at the deformation portion 113. The other part above 123 is deformed by twisting.

In the mounted state, the deformation portion may be entirely located in the interference compression section 1310, 1320 such that the whole body is deformed during the twisting process, or only a part (such as the following part) of the deformation portion may be located in the interference compression section. 1310, 1320, and the upper part is located in the introduction section 1313, 1323, so that only the portion located in the interference compression section 1310, 1320 is torsionally deformed, and the upper part is not deformed by the stopper of the introduction portion.

With the mechanism of the present embodiment, after the mounting structure is inserted into the mounting

holes

131, 132, the

end twisting portions

112, 122 can be twisted from below the base 130, thereby deforming the deforming

portions

113, 123 and, for example, diagonally. The surrounding portions of the two rectangular end points may press the

arcuate sections

1312, 1322 of the mounting

holes

131, 132 to form an interference fit therewith (in the process, for example, the inside of the arcuate section made of plastic may be rubbed Some debris is removed, thereby fixing the deformation in the

curved sections

1312, 1322. Furthermore, the

end torsion portions

112, 122 are rotated by a certain angle with respect to the mounting

holes

131, 132 due to the torsion, for example 45[deg. (of course any other suitable angle, but not limited to 45[deg.]), such that the

end torsion portion

112 , 122 cannot pass upward through the

rectangular sections

1311, 1312 of the mounting

holes

131, 132, so that the end torsion is formed again A lower stop that limits the displacement of the upward movement. Preferably, the end twist portion is not deformed during the twisting process, but is only rotated by a certain angle with respect to the original direction. Of course, the end twist itself can also be deformed during the twisting process. Further, as a non-preferred solution, the end twist portion may not be formed as a lower stop portion, and the lower stopper portion may be constructed by other structures without departing from the scope of the present invention.

The embodiment realizes the installation of the first and

second support plates

11 and 12 on the base 130 only by simple screwing to deform the deformation portion to form an interference fit relationship with the curved portion, and the installation is very simple and unnecessary The screws are fixed, requiring fewer parts and a small size.

Although the support frame 10 includes only the discrete first support plates 11 and the second support plates 12 disposed substantially in parallel as described above, it should be understood that the support frame 10 may have other configurations, such as a first support plate and a second support. The

plates

11, 12 can be formed in one piece. In addition, although only two mounting structures are shown in the figures, it is contemplated that the support frame 10 can also have one or more mounting structures, such as two devices on the first and

second support plates

11, 12. One or more mounting structures, all of which fall within the scope of the present invention. Moreover, although not optimal, the support frame 10 may be replaced by other metals or any other suitable material, such as copper, iron, etc., as long as it can have sufficient toughness and can reach a certain critical force. Torsional deformation occurs after the value.

Further, although the rocker arm 20 and the connecting shaft 60 are connected by a spring as described above, other elastic members are also conceivable instead of the spring.

As shown in Figures 6 and 7, the main shaft 80 has a main body 81 and spaced apart first flanges 116 and second flanges 126. As shown in Figures 6 and 7, the first support plate 11 has a first curved support portion supported above the first flange 116, and the second support plate 12 has a second arc supported above the second flange 126. Shaped support. The spindle 80 is thereby rotatable relative to the first and

second support plates

11, 12 along the first and second arcuate supports. In this embodiment, the respective ends of the first drive link 51 and the second drive link 52 are drivingly coupled to the jumper 40. The other ends of the first drive link 51 and the second drive link 52 are respectively drivingly coupled to both ends of the connecting shaft 60. The main shaft 80 defines

sockets

82, 83 that are mounted in cooperation with the connecting shaft 60. The

sockets

82, 83 are sleeved outside the connecting shaft 60 and have a supporting connecting shaft 60 and can move or rotate together with the connecting shaft 60 (here, the same turning means that the main shaft revolves along with the connecting shaft 60, that is, connected The

rotation support portions

821 and 831 in which the shaft 60 moves along the same movement path and the

introduction throat portions

822 and 832 that guide the connection shaft into the rotation support portion. Preferably, the

rotational support portions

821, 831 have a circular arc-shaped cross section that is shaped and sized to match the connecting shaft. And preferably, the

introduction throats

822, 832 extend from the rotation support portions 821, 831 A pair of extending arcs at both ends of the pair are defined, and the pair of extending arcs have a radius larger than that of the

rotating support portions

821, 831, so that the connecting shaft 60 is easily introduced into the rotating support portion and is easily released after molding.

In this embodiment, by providing the

sockets

82, 83 on the main shaft 80, the connecting shaft 60 can be directly introduced into the rotating support portion through the introduction throat of the socket, so that when the connecting shaft 60 rotates, the main shaft 80 can follow The connecting shaft rotates together. Compared with the prior art, the embodiment reduces multiple parts, for example, from the original six parts, to the current three parts, and can achieve the same technical effect as the six parts in the prior art, and has a simple structure. small volume.

Although the invention has been described in terms of a plastic case circuit breaker, it is contemplated that the invention is applicable to any other suitable type of circuit breaker.

The preferred embodiments of the invention have been described above, and the features in these embodiments may be interchanged, substituted or combined.

It should be understood that, although the description has been described in terms of various embodiments, it is not intended that the embodiment The technical solutions in the respective embodiments may also be combined as appropriate to form other embodiments that can be understood by those skilled in the art.

The above is only the exemplary embodiments of the present invention and is not intended to limit the scope of the present invention. Equivalent changes, modifications, and combinations of the invention may be made without departing from the spirit and scope of the invention.

Claims

A circuit breaker comprising a base (130) with mounting holes (131, 132), a stationary contact fixedly mounted on the base (130), and a spindle rotatably mounted on the base (130) (80) a movable contact (150) rotatable with the main shaft (80) to selectively engage or disengage the fixed contact, and an operating mechanism (500) for operating the main shaft (80) to rotate, wherein The operating mechanism (500) includes a support frame (10) including a mounting structure for mating with mounting holes (131, 132) of the base (130), the mounting structure including a configuration configured to be torsionally deformed A deformation portion (113, 123) that forms a press interference fit with the mounting holes (131, 132) and an end twist portion (112, 122) that is configured to be twisted.
The circuit breaker according to claim 1, characterized in that the end twisting portion (112, 122) is configured as a lower stop.
The circuit breaker according to claim 2, wherein the mounting structure is a metal member or includes a metal portion, and the mounting structure further includes a large-sized portion (114, 124) above the deformation portion (113, 123). And the deformation portion (113, 123) is defined by a constricted portion between the large-sized portion (114, 124) and the end-turn portion (112, 122).
The circuit breaker according to claim 3, characterized in that said mounting holes (131, 132) have an interference squeezing section (1310, 1320), the interference squeezing section (1310, 1320) being in cross section There are rectangular sections (1311, 1321) and curved sections (1312, 1322) for forming a press fit with the deformation.
The circuit breaker according to claim 4, characterized in that said mounting holes (131, 132) further comprise receiving sections (1314, 1324) for receiving said end twists (112, 122).
The circuit breaker according to claim 5, wherein said mounting holes (131, 132) further comprise a lead-in section for introducing said mounting structure above said interference squeezing section (1310, 1320) (1313, 1323).
The circuit breaker according to claim 6, wherein said curved section (1312, 1322) is defined by a circular arc having a first diameter, said receiving section (1314, 1324) being greater than the first A circular aperture of a second diameter diameter.
The circuit breaker according to any one of claims 1 to 7, characterized in that the support frame (10) comprises a first support plate (11) and a second support plate (12) arranged in parallel, wherein A mounting structure is provided for each of a support plate (11) and a bottom end of the second support plate (12).
The circuit breaker according to claim 8, wherein said main shaft (80) has annular first flanges (84) and second flanges (85) spaced apart, said first support plate (11) Having a first curved support portion (116) supported on the first flange (84), the second support plate (12) having a second curved shape supported on the second flange (85) Support portion (126).
The circuit breaker according to claim 1, wherein said operating mechanism includes a first drive link (51), a second drive link (52), and a first and a second drive link (51) a coupling shaft (60) at the end of 52), the main shaft (80) defining a socket (82, 83) mounted in cooperation with the connecting shaft (60), the socket (82, 83) A rotation support portion (821, 831) having a support connection shaft and movable with the connection shaft, and an introduction throat portion (822, 832) for guiding the connection shaft to the rotation support portion (821, 831).
The circuit breaker according to claim 10, characterized in that the rotation support portion (821, 831) has a circular arc-shaped cross section matching the connection shaft (60).
The circuit breaker according to claim 10, wherein said introduction throat (822, 832) is defined by a pair of extending arcs extending to both ends of said rotation support portions (821, 831), the pair The extended arc has a radius larger than the rotational support portions (821, 831).
The circuit breaker according to any one of claims 1 to 7 and 9 to 12 is a plastic case type circuit breaker.
A circuit breaker operating mechanism (500) mounted on a mounting hole (131, 132) of a base (130) of a circuit breaker and for operating rotation of a main shaft (80) of the circuit breaker, the operating mechanism including a support frame (10) The support frame (10) includes a mounting structure including a deformation portion (113, 123) configured to be torsionally deformed to form a compression interference fit with the mounting holes (131, 132) and configured to be twisted Operated end torsion (112, 122).
The operating mechanism (500) according to claim 14, wherein the end twisting portion (112, 122) is configured as a lower stop.
The circuit breaker according to claim 15, wherein the mounting structure is a metal member or includes a metal portion, and the mounting structure further includes a large-sized portion (114, 124) above the deformation portion (113, 123). And the deformation portion (113, 123) defined by a constricted portion between the large-sized portion (114, 124) and the end-twisted portion (112, 122).