CN218939573U - Coil skeleton device and circuit breaker - Google Patents

Abstract

The embodiment of the application provides a coil skeleton device and circuit breaker, belongs to the technical field of piezoelectric devices. The bobbin apparatus includes: the coil framework comprises a cylinder with two axial ends open, and an iron core is arranged in the cylinder; the outer peripheral wall of the cylinder is provided with a first limit part for fixing the coil framework; the fixing frame is used for installing the coil framework and comprises a first fixing plate, a first clamping groove is formed in one side of the first fixing plate, the first clamping groove is combined with the outer Zhou Bika of the cylinder, and a second limiting part matched with the first limiting part is arranged on the inner wall of the first clamping groove. The first clamping groove is combined with the outer Zhou Bika of the cylinder, so that the first limiting part and the second limiting part are mutually matched, the coil framework can be fixed by the fixing frame, the coil framework is not easy to shake or relatively displace when the movable iron core acts, the stability of the coil framework is improved, and the tripping mechanism is favorable for smoothly completing tripping by the impact of the movable iron core.

Description

Coil skeleton device and circuit breaker

Technical Field

The embodiment of the application relates to the technical field of piezoelectric devices, in particular to a coil skeleton device and a circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. At present, a magnetic tripping mechanism for protecting household wires and electric appliances is arranged in a household miniature circuit breaker, the magnetic tripping mechanism comprises a coil, a coil framework and a fixing frame, when the household miniature circuit breaker is used, a movable iron core and a static iron core are arranged in the coil framework, when a short-circuit current occurs in a household circuit, the coil magnetizes the static iron core to enable the static iron core to generate stronger electromagnetic force so as to drive the movable iron core to act, the movable iron core strikes a movable contact of the circuit breaker in the action process, or a part linked with the movable contact is arranged on the movable iron core, so that the movable contact and the static contact are disconnected, further tripping is completed, and the household circuit is protected.

However, the coil framework is not firmly fixed with the fixing frame, so that the coil framework is easy to shake along with the action of the movable iron core when in use, thereby interfering the execution of the tripping action of the magnetic tripping mechanism.

Disclosure of Invention

In view of the above, embodiments of the present application provide a coil bobbin device and a circuit breaker, which can fix a coil bobbin firmly by a fixing frame, and avoid the coil bobbin from shaking when a movable iron core acts.

In a first aspect of embodiments of the present application, there is provided a bobbin apparatus including: the coil framework comprises a cylinder with two axial ends open, and an iron core is arranged in the cylinder; the outer peripheral wall of the cylinder is provided with a first limit part for fixing the coil framework; the fixing frame is used for installing the coil framework and comprises a first fixing plate, a first clamping groove is formed in one side of the first fixing plate, the first clamping groove is combined with the outer Zhou Bika of the cylinder, and a second limiting part matched with the first limiting part is arranged on the inner wall of the first clamping groove.

The first clamping groove is combined with the outer Zhou Bika of the cylinder, so that the first limiting part and the second limiting part are mutually matched, the coil framework can be fixed by the fixing frame, the coil framework is not easy to shake or relatively displace when the movable iron core acts, the stability of the coil framework is improved, and the tripping mechanism is favorable for smoothly completing tripping by the impact of the movable iron core.

In some embodiments, one of the first limiting portion and the second limiting portion is a bump, the other is a groove matched with the bump, and the bump can be embedded into the groove.

Through above-mentioned scheme, with lug and recess close fit, because the volume of lug is great, can not take place to warp because of factors such as moulding plastics or extrusion, make the outer peripheral wall of first draw-in groove and section of thick bamboo can close the block. Therefore, the coil framework is not easy to shake or relatively displace in the groove, and the fixing frame can firmly fix the coil framework.

In some embodiments, the fixing frame further comprises a second fixing plate, the second fixing plate is opposite to the plate surface of the first fixing plate, a second clamping groove is formed in one side of the second fixing plate, and the second clamping groove is combined with the outer Zhou Bika of the barrel.

Through above-mentioned scheme, with the second draw-in groove and the outer Zhou Bika of section of thick bamboo, the coil skeleton receives the spacing of first fixed plate and second fixed plate to further reduce the coil skeleton and take place the range that rocks with the mount relatively, improve the steadiness of coil skeleton.

In some embodiments, the bobbin device further comprises a coil wound on the outer peripheral wall of the barrel between the first and second fixed plates.

Through above-mentioned scheme, twine the coil on the periphery wall of a section of thick bamboo between first fixed plate and second fixed plate, because of the blocking of first fixed plate and second fixed plate, the coil is difficult for droing from the periphery wall of a section of thick bamboo.

In some embodiments, the coil skeleton further comprises two positioning parts, wherein the positioning parts are arranged outside the cylinder, one positioning part is positioned at one side of the first fixing plate close to the second fixing plate and is in butt joint with the first fixing plate, and the other positioning part is positioned at one side of the second fixing plate close to the first fixing plate and is in butt joint with the second fixing plate; or, one positioning part is positioned at one side of the first fixing plate far away from the second fixing plate and is abutted with the first fixing plate, and the other positioning part is positioned at one side of the second fixing plate far away from the first fixing plate and is abutted with the second fixing plate.

According to the scheme, the coil framework is limited and fixed along the axial direction of the cylinder through the two positioning parts respectively connected with the first fixing plate and the second fixing plate, so that the coil framework is not easy to shake or relatively displace between the first fixing plate and the second fixing plate, and the coil framework can be well fixed by the fixing frame, and the stability of the coil framework is improved.

In some embodiments, a flange is provided on the outer peripheral surface of the cartridge, and the locating portion includes the flange.

Through above-mentioned scheme, be equipped with the flange on the outer peripheral face of a section of thick bamboo, utilize the flange respectively with first fixed plate and second fixed plate butt, further spacing and fixed coil skeleton, because of the material of preparation flange is less, can use less material just fix the coil skeleton between first fixed plate and second fixed plate, have low in production cost's advantage.

In some embodiments, the cartridge includes first and second coaxially and adjacently disposed portions, the first portion having an outer diameter greater than an outer diameter of the second portion, and the locating portion includes an end surface of the first portion proximate the second portion.

Through above-mentioned scheme, the section of thick bamboo includes coaxial and adjacent first part and the second part that sets up, and the external diameter of first part is greater than the external diameter of second part, utilizes the terminal surface that first part is close to the second part to be in butt with first fixed plate and second fixed plate respectively, further prescribes a limit to and fix the coil skeleton, improves the steadiness of coil skeleton.

In some embodiments, the coil further comprises a first lead-out end and a second lead-out end, the first lead-out end is fixedly connected with the fixing frame, and the second lead-out end is led out from one side of the first fixing plate or the second fixing plate; the coil bobbin further includes a fixing rod between the first fixing plate and the second lead-out end when the second lead-out end is led out from one side of the first fixing plate, or between the second fixing plate and the second lead-out end when the second lead-out end is led out from one side of the second fixing plate.

Above-mentioned scheme, because relatively fixed between coil and the mount, so when the dead lever is located between first fixed plate and the second and draw forth the end, or be located between second fixed plate and the second and draw forth the end, the dead lever can receive the spacing of mount and coil to further reduce the range that coil skeleton takes place to rock for the relative mount of coil skeleton, make the fixed mount can be better fixed with spacing coil skeleton, improve coil skeleton's steadiness.

In some embodiments, a baffle for shielding dust is provided at least one end opening of the bore of the cartridge.

The shielding of the baffle can prevent dust or other impurities from entering the cylinder, and the iron core is not easy to cause clamping stagnation or blocking.

The embodiment of the application also provides a circuit breaker, which comprises the coil skeleton device in the embodiment.

The foregoing description is only an overview of the technical solutions of the embodiments of the present application, and may be implemented according to the content of the specification, so that the technical means of the embodiments of the present application can be more clearly understood, and the following detailed description of the present application will be presented in order to make the foregoing and other objects, features and advantages of the embodiments of the present application more understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a coil bobbin according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a fixing frame according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a coil bobbin device according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another view of the bobbin device according to the embodiment of the present application.

Reference numerals illustrate:

1. a coil bobbin; 11. a barrel; 111. a baffle; 12. a first limit part; 13. a positioning part; 14. a fixed rod; 2. a fixing frame; 21. a first fixing plate; 211. a first clamping groove; 2111. a second limit part; 22. a second fixing plate; 221. a second clamping groove; 3. a coil; 31. a second exit end; 32. a first lead-out end.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the drawings are intended to cover a non-exclusive inclusion.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: there are three cases, a, B, a and B simultaneously. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The directional terms appearing in the following description are all directions shown in the drawings and are not intended to limit the specific structure of the bobbin device of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Further, expressions of directions of indication for explaining the operation and construction of the respective members of the bobbin apparatus of the present embodiment, such as the X-direction, the Y-direction, and the Z-direction, are not absolute but relative, and although these indications are appropriate when the respective members of the battery pack are in the positions shown in the drawings, these directions should be interpreted differently when these positions are changed to correspond to the changes.

Furthermore, the terms first, second and the like in the description and in the claims of the present application or in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order, and may be used to expressly or implicitly include one or more such features.

In the description of the present application, unless otherwise indicated, the meaning of "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two).

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., the terms "connected" or "coupled" of a mechanical structure may refer to a physical connection, e.g., the physical connection may be a fixed connection, e.g., by a fastener, such as a screw, bolt, or other fastener; the physical connection may also be a detachable connection, such as a snap-fit or snap-fit connection; the physical connection may also be an integral connection, such as a welded, glued or integrally formed connection. "connected" or "connected" of circuit structures may refer to physical connection, electrical connection or signal connection, for example, direct connection, i.e. physical connection, or indirect connection through at least one element in the middle, so long as circuit communication is achieved, or internal communication between two elements; signal connection may refer to signal connection through a medium such as radio waves, in addition to signal connection through a circuit. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The magnetic tripping mechanism generally comprises a coil, a coil framework, a fixed frame, a movable iron core, a static iron core, a spring and a push rod. When the domestic circuit is short-circuited, thousands of amperes of short-circuit current can occur, under the condition, the coil can generate strong electromagnetic force, so that the movable iron core in the coil framework overcomes the counterforce of the spring to be attracted with the static iron core and push the ejector rod, and the ejector rod pushes the magnetic tripping mechanism to finish tripping. If the coil framework is not fixed firmly with the fixing frame, the coil framework can shake or relatively displace along with the vibration of the movable iron core, so that the attraction of the movable iron core and the static iron core is influenced, and the ejector rod is influenced to push the magnetic tripping mechanism to finish tripping. Wherein, the movable iron core, the static iron core, the spring and the ejector rod are all arranged in the inner hole of the coil framework.

The bobbin is a bobbin for winding a coil, and is generally a plastic member for electronic components, and is generally mass-produced by injection molding using a bobbin injection mold. The injection molding process comprises die assembly, filling, pressure maintaining, cooling, die opening and die stripping. During the filling process, the filling behavior depends on the volume of the cavity of the mold to be filled, and the region with larger volume is filled first and the region with smaller volume is refilled, so that if the volume of a part of the region of the mold is smaller, for example, a narrow slit is formed, the filler is difficult to enter, and the formed structure of the narrow slit region is deformed by buckling or is lacked.

The coil frame is usually fixed by clamping the convex thin sheet of the coil frame in the groove of the fixing frame, but the thin sheet can generate buckling deformation or material shortage due to injection molding. Meanwhile, the thin sheet is not firm enough and often deforms due to being extruded by the fixing frame, so that the coil framework and the fixing frame are not firm, and when short-circuit current occurs in a household circuit, the coil framework can shake along with the action of the movable iron core, and therefore the execution of the tripping action of the magnetic tripping mechanism is interfered.

In view of this, the embodiment of the present application provides a coil bobbin device, fig. 1 is a schematic structural diagram of a coil bobbin provided in the embodiment of the present application, and fig. 2 is a schematic structural diagram of a fixing frame provided in the embodiment of the present application. As shown in fig. 1 and 2, the bobbin device comprises a bobbin 1, wherein the bobbin 1 comprises a cylinder 11 with two axial ends open, and an iron core is arranged in the cylinder 11; a first limiting part 12 for fixing the coil skeleton 1 is arranged on the outer peripheral wall of the cylinder 11; the fixing frame 2 is used for installing the coil skeleton 1, and the fixing frame 2 includes first fixed plate 21, and first fixed plate 21 one side is equipped with first draw-in groove 211, and first draw-in groove 211 closes with the outer Zhou Bika of a section of thick bamboo 11, is equipped with on the inner wall of first draw-in groove 211 with first spacing portion 12 complex second spacing portion 2111.

The first limiting portion 12 and the second limiting portion 2111 may have various structures, in some embodiments, as shown in fig. 2, a first clamping groove 211 is disposed on a side of the first fixing plate 21 facing the barrel 11, an inner wall of the first clamping groove 211 is in an arc shape adapted to an outer peripheral wall of the barrel 11, and an opening of the first clamping groove 211 cannot be smaller than an outer diameter of the barrel 11, so that the first clamping groove 211 can be clamped to the outer peripheral wall of the barrel 11 along a radial direction of the barrel 11 and tightly clamped with the outer peripheral wall of the barrel 11. The first clamping groove 211 penetrates through the first fixing plate 21, and the opening length of the first clamping groove 211 is smaller than the edge length of the first fixing plate 21 where the opening is located.

The number of the first limiting parts 12 is equal to that of the second limiting parts 2111, and one or a plurality of the first limiting parts can be adopted, and any one of the first limiting parts 12 is provided with the second limiting part 2111 which can be matched with the first limiting part. It can be appreciated that the first limiting portion 12 and the second limiting portion 2111 are provided in plurality, so that a plurality of matching is formed between the first clamping groove 211 and the outer peripheral wall of the barrel 11, thereby further making it possible to fix the bobbin 1 by the fixing frame 2 more firmly.

According to the embodiment of the application, the first clamping groove 211 is combined with the outer Zhou Bika of the cylinder 11, and the first limiting part 12 and the second limiting part 2111 are mutually matched, so that the coil bobbin 1 and the fixing frame 2 are fixed more firmly and stably, the coil bobbin 1 is not easy to shake or relatively displace when the movable iron core acts, the stability of the coil bobbin 1 is improved, and the tripping mechanism is facilitated to smoothly strike the movable iron core to finish tripping.

The first and second stopper portions 12 and 2111 may include various structures. As shown in fig. 1 and 2, in some embodiments, one of the first limiting portion 12 and the second limiting portion 2111 is a protrusion, and the other is a groove that mates with the protrusion, and the protrusion can be embedded in the groove.

In the above embodiment, the first limiting portion 12 may be a bump, the second limiting portion 2111 may be a groove, or the first limiting portion 12 may be a groove, and the second limiting portion 2111 may be a bump. In fig. 1 and 2, only the first limiting portion 12 is taken as a bump, and the second limiting portion 2111 is taken as a groove for illustration.

It should be noted that: the lug is the massive structure, and is not the slice structure, therefore the volume of lug is great, can be filled by the priority because of the lug corresponds to wait to fill the volume of mould inner chamber great in the injection molding process, and warp deformation or lack of material are difficult for appearing in fashioned structure, then in the use, are difficult for being extruded by mount 2 and take place to warp to make mount 2 with coil former 1 fixed more firm.

The bump may be a cylinder, a prism, a sphere or any other irregular shape. The cross section of the groove can be round, polygonal, a combination of various shapes and the like, so long as the cross section of the groove is matched with the cross section of the lug. When the plurality of bumps are provided, the plurality of bumps may be arranged along the circumferential direction of the barrel or may be arranged in a straight line along a generatrix of the barrel, which is not limited in the embodiment of the present application.

In some embodiments, as shown in fig. 2, the fixing frame 2 further includes a second fixing plate 22, where the second fixing plate 22 is disposed opposite to the plate surface of the first fixing plate 21, and a second clamping groove 221 is disposed on one side of the second fixing plate 22, and the second clamping groove 221 is engaged with the outer portion Zhou Bika of the barrel 11.

It should be noted that the structures and functions of the second fixing plate 22 and the second clamping groove 221 are similar to those of the first fixing plate 21 and the first clamping groove 211, and thus, the structures and functions of the second fixing plate 22 and the second clamping groove 221 may refer to those of the first fixing plate 21 and the first clamping groove 211, and will not be described herein.

It should be noted that: the first fixing plate 21 and the second fixing plate 22 are similar in structure, but it is not necessary that the first fixing plate 21 and the second fixing plate 22 cooperate to fix the bobbin 1 to the fixing frame 2. That is, when only the first clamping groove 211 is combined with the outer side Zhou Bika of the cylinder 11, the fixing frame 2 can fix the coil skeleton 1; when the first clamping groove 211 and the second clamping groove 221 are combined with the outer side Zhou Bika of the cylinder 11, the fixing frame 2 is further used for fixing the coil frame 1, and the stability of the coil frame 1 is improved.

Fig. 3 is a schematic structural diagram of a coil bobbin device according to an embodiment of the present application. As shown in fig. 3, in some embodiments, the bobbin apparatus further includes a coil 3, the coil 3 being wound on the outer circumferential wall of the barrel 11 between the first fixing plate 21 and the second fixing plate 22.

The cylinder 11 is fixed by the first fixing plate 21 and the second fixing plate 22, and the amplitude of the shaking or the relative displacement of the cylinder 11 caused by the vibration of the iron core is further reduced, so that the coil bobbin 1 can be better fixed and limited. At the same time, the coil 3 is wound around the outer peripheral wall of the barrel 11, and the coil 3 is not easily detached from the outer peripheral wall of the barrel 11 due to the blocking of the first fixing plate 21 and the second fixing plate 22.

Fig. 4 is a schematic structural diagram of another view of a bobbin device according to an embodiment of the present application. In some embodiments, as shown in fig. 3 and 4, the coil bobbin 1 further includes two positioning portions 13, the positioning portions 13 are disposed outside the barrel 11, one positioning portion 13 is located on a side of the first fixing plate 21 near the second fixing plate 22 and is abutted with the first fixing plate 21, and the other positioning portion 13 is located on a side of the second fixing plate 22 near the first fixing plate 21 and is abutted with the second fixing plate 22; alternatively, one positioning portion 13 is located on a side of the first fixing plate 21 away from the second fixing plate 22 and abuts against the first fixing plate 21, and the other positioning portion 13 is located on a side of the second fixing plate 22 away from the first fixing plate 21 and abuts against the second fixing plate 22.

Taking fig. 3 as an example, in the drawing, one positioning portion 13 is located on the right side of the first fixing plate 21 (i.e., the side of the first fixing plate 21 near the second fixing plate 22) and abuts against the first fixing plate 21, and the other positioning portion 13 is located on the left side of the second fixing plate 22 (i.e., the side of the second fixing plate 22 near the first fixing plate 21) and abuts against the second fixing plate 22, and when the coil bobbin 1 tries to move leftward relative to the fixing frame 2, the left positioning portion 13 abuts against the first fixing plate 21, limiting the leftward movement of the coil bobbin 1 relative to the fixing frame 2; when the coil skeleton 1 tries to move rightwards relative to the fixed frame 2 through the abutting of the other positioning part 13 and the second fixed plate 22, the right positioning part 13 abuts against the second fixed plate 22, so that the movement of the coil skeleton 1 rightwards relative to the fixed frame 2 is limited; it can be seen that, through the cooperation of the two positioning portions 13 with the first fixing plate 21 and the second fixing plate 22 respectively, the purpose of limiting the movement of the coil skeleton 1 along the two axial ends of the barrel 11 is achieved, the amplitude of shaking or relative displacement of the coil skeleton 1 is reduced, and the stability of the coil skeleton 1 is improved.

In the above embodiment, it is also possible that one positioning portion 13 is located on the left side of the first fixing plate 21 (i.e., the side of the first fixing plate 21 away from the second fixing plate 22) and abuts against the first fixing plate 21, and the other positioning portion 13 is located on the right side of the second fixing plate 22 (i.e., the side of the second fixing plate 22 away from the first fixing plate 21) and abuts against the second fixing plate 22.

Wherein, because the location portion 13 sets up in the outside of section of thick bamboo 11, and location portion 13 and first fixed plate 21 and second fixed plate 22 butt respectively, carry out spacingly through the motion at the axial both ends of location portion 13 along section of thick bamboo 11 to coil skeleton 1, reduce coil skeleton 1 and take place the range of rocking about, improve coil skeleton 1's steadiness.

It should be noted that: the specific structures of the two positioning portions 13 may be the same or different, as long as the function of limiting the movement of the coil bobbin 1 along the axial direction both ends of the cylinder 13 can be achieved.

The form of the positioning part can also be various.

In some embodiments, referring to the location on the left side of the cartridge in fig. 3, a flange is provided on the outer peripheral surface of the cartridge 11, and the location 13 comprises a flange.

The flange may be integrally formed with the barrel 11, may be fitted over the barrel 11, may be connected to an end surface of the barrel 11, or the like. The flange may have a ring-like structure wound around the outer peripheral wall of the cylinder 11, a convex structure provided at intervals on the outer peripheral wall of the cylinder 11, or a gear-like structure provided on the outer peripheral wall of the cylinder 11. The flanges are respectively arranged at the positions close to the openings at the two ends of the cylinder 11, and the flanges close to the two ends of the cylinder 11 are respectively abutted against the first fixing plate 21 and the second fixing plate 22, so that the coil skeleton 1 is limited and fixed along the axial direction of the cylinder 11, and the stability of the coil skeleton 1 is improved.

In some embodiments, referring to the location 13 on the right side of the barrel 11 in fig. 3, the barrel 11 includes a first portion and a second portion coaxially and adjacently disposed, the first portion having an outer diameter greater than the second portion, the location 13 including an end surface of the first portion proximate the second portion.

Since the outer diameter of the first portion coaxially disposed with the barrel 11 is larger than the outer diameter of the second portion coaxially disposed with the barrel 11, the end surface of the first portion adjacent to the first portion is a stepped surface. The step surface is respectively abutted with the first fixing plate 21 and the second fixing plate 22, and limits and fixes the coil skeleton 1 along the axial direction of the cylinder 11, so that the stability of the coil skeleton 1 is improved.

It should be noted that: the positioning portion 13 is a flange or a step surface, and can fix the bobbin 1 between the first fixing plate 21 and the second fixing plate 22 by using less material, which has the advantage of low production cost.

In some embodiments, as shown in fig. 3 and 4, the coil 3 further includes a first lead-out end 32 and a second lead-out end 31, the first lead-out end 32 is fixedly connected with the fixing frame 1, and the second lead-out end 31 is led out from one side of the first fixing plate 21 or the second fixing plate 22; the bobbin 1 further includes a fixing rod 14, and the fixing rod 14 is positioned between the first fixing plate 21 and the second lead-out end 31 when the second lead-out end 31 is led out from one side of the first fixing plate 21, or the fixing rod 14 is positioned between the second fixing plate 22 and the second lead-out end 31 when the second lead-out end 31 is led out from one side of the second fixing plate 22.

The first lead-out end 32 may be fixedly connected to the fixing frame 1 in various manners, such as welding, key connection, screw connection, etc., as long as the first lead-out end 32 and the fixing frame 1 can be fixedly connected.

The fixing rod 14 may be integrally formed with the cylinder 11, or may be connected to an end surface or an outer peripheral surface of the cylinder 11. The fixing lever 14 has an L-shape, and when the second lead-out end 31 is led out from the first fixing plate 21, the vertical section of the fixing lever 14 is located between the first fixing plate 21 and the second lead-out end 31, and the horizontal section of the fixing lever 14 is located on the side of the second lead-out end 31 away from the barrel 11. When the second lead-out end 31 is led out from the second fixing plate 22, the vertical section of the fixing lever 14 is located between the second fixing plate 22 and the second lead-out end 31, and the horizontal section of the fixing lever 14 is located on the side of the second lead-out end 31 remote from the barrel 11.

When the bobbin 1 is shaken or relatively displaced, the fixing rod 14 is caught by the first fixing plate 21 and the second lead-out end 31 or by the second fixing rod 22 and the second lead-out end 31, so that the bobbin 1 is reduced in the shaking or relatively displaced extent in the horizontal section direction of the fixing rod 14 due to the fixing of the fixing rod 14 when the movable iron core is operated. In addition, the layout between the fixing rod 14 and the fixing frame 2 and the coil 3 is reasonable, the overall size of the coil skeleton device is reduced, and the installation space is saved.

In some embodiments, as shown in fig. 1, a baffle 111 for shielding dust is provided at an opening of at least one end of the inner bore of the barrel 11.

The baffle 111 may be disposed at an opening at one end of the inner hole, that is, an opening at one end of the inner hole near the first fixing plate 21 or an opening at one end of the inner hole near the second fixing plate 22, or may be disposed at openings at two ends of the inner hole, that is, one end of the inner hole near the first fixing plate 21 and the other end of the inner hole near the second fixing plate 22 are respectively provided with the baffle 111.

The baffle 111 may be provided in the inner hole or may be provided on the inner hole side. For example, taking fig. 3 and fig. 4 as an example, when the coil bobbin device is assembled in the circuit breaker, most of the positions of the two ends of the inner hole are blocked by other components in the circuit breaker, only the partial position of the inner hole near one end of the first fixing plate 21 cannot be blocked, at this time, in order to prevent impurities from entering the inner hole from the non-blocked position, the baffle 111 may be disposed at one end of the inner hole near the first fixing plate 21 and located at one side of the non-blocked position, so that dust or other impurities are not easy to enter the cylinder 11 from one side of the cylinder 11 near the first fixing plate 21, and the iron core is not easy to cause problems of jamming or blocking.

The embodiment of the application also provides a circuit breaker, which comprises the coil framework device in the previous embodiment. Because the structure and the beneficial effects of the coil skeleton device are described in detail in the foregoing embodiments, the description is omitted herein.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A bobbin apparatus, comprising:

the coil framework comprises a cylinder with two axial ends open, and an iron core is arranged in the cylinder; a first limiting part for fixing the coil framework is arranged on the peripheral wall of the cylinder;

the fixing frame is used for installing a coil framework and comprises a first fixing plate, a first clamping groove is formed in one side of the first fixing plate, the first clamping groove is combined with the outer Zhou Bika of the cylinder, and a second limiting part matched with the first limiting part is arranged on the inner wall of the first clamping groove.

2. The bobbin assembly of claim 1, wherein one of the first and second retainers is a tab and the other is a recess that mates with the tab, the tab being insertable into the recess.

3. The bobbin assembly of claim 1, wherein the mounting bracket further comprises a second mounting plate disposed opposite the top surface of the first mounting plate, and wherein a second slot is formed in one side of the second mounting plate and engages the outer portion Zhou Bika of the can.

4. The bobbin apparatus of claim 3, further comprising a coil wound on an outer peripheral wall of the barrel between the first and second fixed plates.

5. The bobbin assembly of claim 3, wherein the bobbin further comprises two positioning portions, one of the positioning portions being located on a side of the first fixing plate adjacent to the second fixing plate and abutting the first fixing plate, and the other positioning portion being located on a side of the second fixing plate adjacent to the first fixing plate and abutting the second fixing plate; or alternatively, the process may be performed,

one positioning part is positioned at one side of the first fixing plate away from the second fixing plate and is abutted with the first fixing plate, and the other positioning part is positioned at one side of the second fixing plate away from the first fixing plate and is abutted with the second fixing plate.

6. The bobbin assembly as set forth in claim 5, wherein a flange is provided on an outer peripheral surface of the tube, and the positioning portion includes the flange.

7. The bobbin assembly of claim 5, wherein the barrel includes first and second coaxially and adjacently disposed portions, the first portion having an outer diameter greater than an outer diameter of the second portion, the locating portion including an end surface of the first portion proximate the second portion.

8. The bobbin assembly of claim 4, wherein the coil further comprises a first lead-out terminal fixedly connected to the mount and a second lead-out terminal led out from one side of the first or second mounting plate;

the coil framework further comprises a fixing rod, and when the second leading-out end is led out from one side of the first fixing plate, the fixing rod is positioned between the first fixing plate and the second leading-out end; or when the second leading-out end is led out from one side of the second fixing plate, the fixing rod is positioned between the second fixing plate and the second leading-out end.

9. The bobbin assembly of claim 1, wherein a baffle for shielding dust is provided at an opening of at least one end of the bore of the barrel.

10. A circuit breaker comprising a bobbin assembly as claimed in any one of claims 1 to 9.

Images