WO2022033190A1 - 线圈骨架及线圈 - Google Patents

线圈骨架及线圈 Download PDF

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Publication number
WO2022033190A1
WO2022033190A1 PCT/CN2021/101963 CN2021101963W WO2022033190A1 WO 2022033190 A1 WO2022033190 A1 WO 2022033190A1 CN 2021101963 W CN2021101963 W CN 2021101963W WO 2022033190 A1 WO2022033190 A1 WO 2022033190A1
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WO
WIPO (PCT)
Prior art keywords
waterproof
coil bobbin
end ring
coil
rib
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Application number
PCT/CN2021/101963
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English (en)
French (fr)
Inventor
余远航
康志军
Original Assignee
浙江盾安人工环境股份有限公司
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Publication date
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to JP2022567466A priority Critical patent/JP2023528186A/ja
Priority to KR1020237001656A priority patent/KR20230024996A/ko
Publication of WO2022033190A1 publication Critical patent/WO2022033190A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof
    • H01F27/324Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H01F27/325Coil bobbins
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof

Definitions

  • the present application relates to the technical field of electromagnetic coils, and in particular, to a coil bobbin and a coil.
  • the electronic expansion valve coil includes a coil bobbin, enameled wire, an electromagnetic pole plate, a pin and a shell.
  • the enameled wire is first wound on the coil bobbin, and then the pin is fixed on the coil bobbin. Both ends of the enameled wire are welded to the socket. needle, then assemble the electromagnetic plate and shell, and finally carry out packaging and injection molding.
  • a coil bobbin includes a bobbin and end rings disposed at both ends of the bobbin, and a connecting plate is provided on one end ring, and the connecting plate is provided with a pin mounting structure for mounting pins.
  • three waterproof bumps are arranged on the connecting plate, and a waterproof groove is formed between the adjacent waterproof bumps.
  • the thickness of the top of the waterproof bump is relatively thick, and the heat of the injection molding material is not enough to melt the top of the waterproof bump during injection molding. After molding, the coil bobbin and the injection molding material have poor bonding. From infiltrating into the coil, the water penetrates along the end ring to the pin installation structure, which makes the insulation performance of the coil invalid and cannot meet the insulation performance requirements of the product.
  • a coil bobbin provided by the present application includes: a winding part; a first end ring and a second end ring, which are arranged at both ends of the winding part; a connecting part, which is arranged on the outer edge of the first end ring; The needle mounting part is arranged on the side of the connecting part away from the first end ring; wherein, the connecting part is provided with a waterproof structure, and the waterproof structure includes two outer waterproof ribs and at least one middle between the two outer waterproof ribs Waterproof rib, the outer waterproof rib has a tip to facilitate melting with the injection molding material.
  • the tip is easily melted into the injection molding material during injection molding, so that the waterproof rib and the injection molding material are effectively melted into one, and the coil bobbin and the injection molding material are well combined after molding, which effectively prevents moisture from penetrating into the insert along the end face of the first end ring.
  • the insulation performance of the coil is improved to meet the requirements of the insulation performance.
  • the surface of the intermediate waterproof rib is a curved surface to extend the penetration distance.
  • This arrangement prevents moisture from penetrating into the pin mounting holes on the pin mounting portion along the end face of the first end ring, thereby improving the insulation performance of the coil.
  • the curved surface is a semicircular surface
  • the curved surface includes two connected and inwardly curved first arc surfaces.
  • the curved surface includes a first inclined surface, a flat surface and a second inclined surface connected in sequence, the first inclined surface and the second inclined surface are inclined relative to the end surface of the first end ring, and the plane is parallel to the end surface.
  • the first inclined plane and the plane form an obtuse angle
  • the second inclined plane and the plane form an obtuse angle
  • This arrangement facilitates the processing of the intermediate waterproof rib and reduces the processing difficulty.
  • the surface of the outer waterproof rib includes a connected vertical surface and a second arc-shaped surface, the vertical surface is perpendicular to the end surface of the first end ring, or the cross-sectional shape of the outer waterproof rib is an inverted V shape.
  • the waterproof structure further includes a protruding strip, the outer waterproof rib and the middle waterproof rib are both arranged on the protruding strip, and at least one side surface of the protruding strip is provided with a first groove to extend the penetration distance.
  • This arrangement prevents moisture from penetrating into the pin mounting holes on the pin mounting portion along the end face of the first end ring, thereby improving the insulation performance of the coil.
  • the cross-sectional shape of the first groove is a semicircle.
  • the connecting portion is further provided with a second groove, the second groove is located between the first end ring and the waterproof structure, and/or the middle surface of the two outer waterproof ribs relative to the middle waterproof ribs
  • the centerline of the set is symmetrical.
  • the second groove can extend the penetration distance; the two outer waterproof ribs are symmetrically arranged, which is convenient for processing and reduces the manufacturing cost.
  • the present application also provides a coil, comprising: the above-mentioned coil bobbin.
  • the coil provided by the present application has the advantages of good waterproof performance, good insulation performance, convenient processing and the like.
  • FIG. 1 is a schematic perspective view of a coil bobbin in a first embodiment of the present application
  • FIG. 2 is a schematic cross-sectional view of the coil bobbin of FIG. 1;
  • FIG. 3 is a partial cross-sectional schematic diagram of the coil bobbin of FIG. 2;
  • FIG. 5 is a partial perspective view of the coil of FIG. 4;
  • FIG. 6 is a schematic perspective view of a coil bobbin in a second embodiment of the present application.
  • FIG. 7 is a schematic cross-sectional view of the coil bobbin of FIG. 6;
  • FIG. 8 is a partial cross-sectional schematic diagram of the coil bobbin of FIG. 7;
  • FIG. 9 is a schematic perspective view of a coil bobbin in a third embodiment of the present application.
  • FIG. 10 is a schematic cross-sectional view of the coil bobbin of FIG. 9;
  • FIG. 11 is a schematic partial cross-sectional view of the coil bobbin of FIG. 10 .
  • a component when referred to as being “mounted on” another component, it can be directly mounted on the other component or there may also be an intervening component.
  • a component When a component is considered to be “set on” another component, it may be directly set on the other component or there may be a co-existing centered component.
  • a component When a component is said to be “fixed” to another component, it may be directly fixed to the other component or there may also be an intervening component.
  • the coil bobbin 10 of this embodiment includes: a winding portion 11 , a first end ring 12 , a second end ring 13 , a connecting portion 14 and a pin mounting portion 15 , the first end ring 12 and the first end ring 12 and the second end ring 13 .
  • the two end rings 13 are arranged at both ends of the winding portion 11 ;
  • the connecting portion 14 is arranged on the outer edge of the first end ring 12 ;
  • the pin mounting portion 15 is arranged on the side of the connecting portion 14 away from the first end ring 12
  • the connecting part 14 is provided with a waterproof structure, and the waterproof structure includes two outer waterproof ribs 16 and a middle waterproof rib 17 located between the two outer waterproof ribs 16. molten.
  • the arrows in Fig. 2 indicate the flow direction of water penetration.
  • the outer waterproof rib 16 has a tip, and the tip is easily melted into the injection material during injection molding, so that the waterproof rib and the injection material are effectively melted into one. This effectively prevents moisture from penetrating into the pin mounting portion 15 along the end face of the first end ring 12, improves the insulation performance of the coil, and meets the requirements for generating insulation performance.
  • the surface of the middle waterproof rib 17 is a curved surface, and the curved surface can extend the penetration distance and prevent moisture from penetrating into the pin mounting holes 151 on the pin mounting portion 15 along the end surface of the first end ring 12, thereby increasing the coil insulating properties.
  • the curved surface is a semicircular surface 171 , which is convenient to process and reduces the manufacturing cost.
  • the surface of the outer waterproof rib 16 includes a connected vertical surface 161 and a second arc-shaped surface 162 , and the vertical surface 161 is perpendicular to the end surface of the first end ring 12 .
  • the connection between the vertical surface 161 and the second arc-shaped surface 162 forms a tip.
  • the second arc-shaped surface 162 is curved inwardly.
  • the second arc-shaped surface 162 is curved outward, or the cross-sectional shape of the outer waterproof rib 16 is an inverted V-shape.
  • the connecting portion 14 is further provided with a second groove 141, the second groove 141 is located between the first end ring 12 and the waterproof structure, and the second groove 141 can extend the penetration distance.
  • the cross-sectional shape of the second groove 141 is V-shaped.
  • the second groove 141 includes an inclined groove wall and a vertical groove wall, the inclined groove wall is inclined relative to the end face of the first end ring 12 , and the vertical groove wall is connected with the vertical surface 161 .
  • the two outer waterproof ribs 16 are symmetrically arranged with respect to the center line of the surface of the middle waterproof rib 17 .
  • the curved surface includes two first arc-shaped surfaces 172 that are connected and arched and curved inwardly, and the connection of the two first arc-shaped surfaces 172 forms a tip.
  • the middle waterproof rib 17 also has a tip. During injection molding, the tip is easily melted into the injection molding material, which further improves the waterproof performance, thereby improving the insulation performance of the coil.
  • the arrows in FIG. 7 indicate the flow directions of water permeation.
  • the first arc-shaped surface 172 is a quarter circular surface, and at this time, the three intermediate waterproof ribs 17 are connected in sequence and are wavy.
  • the waterproof structure further includes protruding strips 18. Both the outer waterproofing rib 16 and the middle waterproofing rib 17 are arranged on the protruding strips 18. The two sides of the protruding strips 18 are provided with first grooves 181 to extend the penetration distance. , to prevent moisture from penetrating into the pin mounting holes 151 on the pin mounting portion 15 along the end face of the first end ring 12 , thereby improving the insulation performance of the coil.
  • the cross-sectional shape of the first groove 181 is a semicircle.
  • the cross-sectional shape of the first groove 181 is V-shaped.
  • the vertical groove wall of the second groove 141 and the vertical surface 161 are in the same plane.
  • three intermediate waterproof ribs 17 of the waterproof structure are provided.
  • the number of the middle waterproof ribs 17 is not limited to this.
  • the protruding strips 18 may not be provided, and the outer waterproof rib 16 and the middle waterproof rib 17 may be directly disposed on the connecting portion 14 . At this time, the vertical groove wall of the second groove 141 and the vertical surface 161 connect.
  • the curved surface includes a first inclined surface 173 , a flat surface 174 and a second inclined surface 175 which are connected in sequence.
  • the end face, that is, the cross-sectional shape of the middle waterproof rib 17 is trapezoidal.
  • the arrows in FIG. 10 indicate the flow direction of water permeation.
  • first inclined surface 173 and the flat surface 174 form an obtuse angle
  • second inclined surface 175 and the flat surface 174 form an obtuse angle
  • the cross-sectional shape of the outer waterproof rib 16 is an inverted V shape.
  • the surface of the outer waterproof rib 16 includes a third inclined surface and a fourth inclined surface inclined relative to the end surface of the first end ring, and the fourth inclined surface is connected with the first inclined surface 173 .
  • the third inclined surface forms an acute included angle with the end surface.
  • the vertical groove wall of the second groove 141 and the third inclined surface are connected by a plane.
  • the present application also provides a coil comprising: the above-mentioned coil bobbin.
  • the coils of FIGS. 4 and 5 use the bobbin of the first embodiment.
  • the coil also includes an electromagnetic pole plate 20, pins 30, enameled wires and a casing 40.
  • the enameled wire is wound on the coil bobbin 10, and then the pins 30 are inserted into the pin mounting holes 151 on the pin mounting portion 15. Then, the two terminals of the enameled wire are welded to the pins 30, the two coil bobbins 10 are connected by two electromagnetic pole plates 20, the outer casing is sheathed outside the coil bobbin, and finally the packaging and injection molding are carried out.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnets (AREA)
  • Insulating Of Coils (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

一种线圈骨架及线圈。该线圈骨架包括:绕线部(11);第一端环(12)和第二端环(13),设置在绕线部(11)的两端处;连接部(14),设置在第一端环(12)的外边缘上;插针安装部(15),设置在连接部(14)的远离第一端环(12)的一侧上;其中,连接部(14)上设有防水结构,防水结构包括两个外防水筋(16)和位于两个外防水筋(16)之间的至少一个中间防水筋(17),外防水筋(16)具有尖端,以便于与注塑材料熔融。

Description

线圈骨架及线圈
相关申请
本申请要求2020年8月14日申请的,申请号为202021706863.8,名称为“线圈骨架及线圈”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电磁线圈技术领域,特别是涉及一种线圈骨架及线圈。
背景技术
目前,电子膨胀阀线圈包括线圈骨架、漆包线、电磁极板、插针及外壳,制造线圈时,首先在线圈骨架上缠绕漆包线,再将插针固定在线圈骨架上,漆包线的两端焊接在插针上,然后组装电磁极板和外壳,最后进行包装注塑。
现有技术中,线圈骨架包括绕线筒和设置在绕线筒的两端的端环,一个端环上设有连接板,所述连接板上设有用于安装插针的插针安装结构。为了防止水从端环上流向插针安装结构处,在连接板上设置三个防水凸块,相邻的防水凸块之间形成防水槽。但是,防水凸块的顶部厚度比较厚,在注塑时注塑材料的热量不足以使防水凸块的顶部熔化,成型后线圈骨架与注塑材料存在结合不良的地方,当线圈处于浸水状态时,水容易从渗入线圈内,水沿端环渗透到插针安装结构处,使得线圈的绝缘性能失效,无法满足产品绝缘性能要求。
发明内容
有鉴于此,有必要提供一种本申请提供一种线圈骨架及线圈,以解决现有技术中防水凸块的顶部比较厚无法完全与注塑材料熔融造成线圈的绝缘性能失效的问题。
本申请提供的一种线圈骨架,包括:绕线部;第一端环和第二端环,设置在绕线部的两端处;连接部,设置在第一端环的外边缘上;插针安装部,设置在连接部的远离第一端环的一侧上;其中,连接部上设有防水结构,防水结构包括两个外防水筋和位于两个外防水筋之间的至少一个中间防水筋,外防水筋具有尖端,以便于与注塑材料熔融。
如此设置,在注塑时尖端容易熔融于注塑材料中,使得防水筋与注塑材料有效地熔融为一体,成型后线圈骨架与注塑材料结合良好,有效地防止水分沿第一端环的端面渗透到插针安装部处,提高线圈的绝缘性能,满足产生绝缘性能要求。
在其中一个实施例中,中间防水筋的表面为曲面,以延长渗透距离。
如此设置,防止水分沿第一端环的端面渗透到插针安装部上的插针安装孔处,进而提升线圈的绝缘性能。
在其中一个实施例中,曲面为半圆形面;
或者,曲面包括两个相连接且向内拱起弯曲的第一弧形面。
如此设置,加工方便,降低制造成本。
在其中一个实施例中,曲面包括依次连接的第一斜面、平面及第二斜面,第一斜面和第二斜面均相对于第一端环的端面倾斜设置,平面平行于端面。
如此设置,加工方便,降低制造成本。
在其中一个实施例中,第一斜面和平面呈钝角夹角,第二斜面和平面呈钝角夹角。
如此设置,便于加工中间防水筋,降低加工难度。
在其中一个实施例中,外防水筋的表面包括相连接的竖直面和第二弧形面,竖直面垂直于第一端环的端面,或者,外防水筋的横截面形状呈倒V形。
如此设置,加工方便,降低制造成本。
在其中一个实施例中,防水结构还包括凸条,外防水筋和中间防水筋均设置在凸条上,凸条的至少一个侧面上设有第一凹槽,以延长渗透距离。
如此设置,防止水分沿第一端环的端面渗透到插针安装部上的插针安装孔处,进而提升线圈的绝缘性能。
在其中一个实施例中,第一凹槽的横截面形状呈半圆形。
如此设置,加工方便,降低制造成本。
在其中一个实施例中,连接部上还设有第二凹槽,第二凹槽位于第一端环和防水结构之间,和/或,两个外防水筋相对于中间防水筋的中表面的中心线对称设置。
如此设置,第二凹槽可以延长渗透距离;两个外防水筋对称设置,加工方便,降低制造成本。
本申请还提供了一种线圈,包括:上述的线圈骨架。
与现有技术相比,本申请提供的线圈具有防水性能好、绝缘性能好、方便加工等优点。
附图说明
图1为本申请的第一种实施方式中的线圈骨架的立体示意图;
图2为图1的线圈骨架的剖视示意图;
图3为图2的线圈骨架的局部剖视示意图;
图4为本申请的线圈的立体示意图;
图5为图4的线圈的局部立体示意图;
图6为本申请的第二种实施方式中的线圈骨架的立体示意图;
图7为图6的线圈骨架的剖视示意图;
图8为图7的线圈骨架的局部剖视示意图;
图9为本申请的第三种实施方式中的线圈骨架的立体示意图;
图10为图9的线圈骨架的剖视示意图;
图11为图10的线圈骨架的局部剖视示意图。
10、线圈骨架;11、绕线部;12、第一端环;13、第二端环;14、连接部;141、第二凹槽;15、插针安装部;151、插针安装孔;16、外防水筋;161、竖直面;162、第二弧形面;17、中间防水筋;171、半圆形面;172、第一弧形面;173、第一斜面;174、平面;175、第二斜面;18、凸条;181、第一凹槽;20、电磁极板;30、插针;40、外壳。
具体实施方式
下面将结合本申请实施方式中的附图,对本申请实施方式中的技术方案进行清楚、完整地描述,显然,所描述的实施方式仅仅是本申请一部分实施方式,而不是全部的实施方式。基于本申请中的实施方式,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施方式,都属于本申请保护的范围。
需要说明的是,当组件被称为“装设于”另一个组件,它可以直接装设在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件,它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一 个组件被认为是“固定于”另一个组件,它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义,本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的,不是旨在于限制本申请。本文所使用的术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
实施方式一
参阅图1至图3,本实施方式的线圈骨架10包括:绕线部11、第一端环12、第二端环13、连接部14及插针安装部15,第一端环12和第二端环13设置在绕线部11的两端处;连接部14设置在第一端环12的外边缘上;插针安装部15设置在连接部14的远离第一端环12的一侧上;其中,连接部14上设有防水结构,防水结构包括两个外防水筋16和位于两个外防水筋16之间的中间防水筋17,外防水筋16具有尖端,以便于与注塑材料熔融。其中,图2的箭头是指水分渗透的流向。
应用本实施方式的线圈骨架,外防水筋16具有尖端,在注塑时尖端容易熔融于注塑材料中,使得防水筋与注塑材料有效地熔融为一体,成型后线圈骨架10与注塑材料结合良好,有效地防止水分沿第一端环12的端面渗透到插针安装部15处,提高线圈的绝缘性能,满足产生绝缘性能要求。
本实施方式中,中间防水筋17的表面为曲面,曲面可以延长渗透距离,防止水分沿第一端环12的端面渗透到插针安装部15上的插针安装孔151处,进而提升线圈的绝缘性能。本实施方式中,曲面为半圆形面171,加工方便,降低制造成本。
本实施方式中,外防水筋16的表面包括相连接的竖直面161和第二弧形面162,竖直面161垂直于第一端环12的端面。竖直面161和第二弧形面162的连接处形成尖端。第二弧形面162向内拱起弯曲。作为可替换的实施方式,第二弧形面162向外拱起弯曲,或者,外防水筋16的横截面形状呈倒V形。
本实施方式中,连接部14上还设有第二凹槽141,第二凹槽141位于第一端环12和防水结构之间,第二凹槽141可以延长渗透距离。具体地,第二凹槽141的横截面形状呈V形。第二凹槽141包括斜槽壁和竖直槽壁,斜槽壁相对于第一端环12的端面倾斜设置,竖直槽壁与竖直面161连接。
本实施方式中,两个外防水筋16相对于中间防水筋17的表面的中心线对称设置。
实施方式二
图6至图8示出了本申请的实施方式二的线圈骨架10的结构,实施方式二的线圈骨架与实施方式一的区别在于防水结构的不同。在实施方式二中,曲面包括两个相连接且向内拱起弯曲的第一弧形面172,两个第一弧形面172的连接处形成尖端,此时中间防水筋17也具有尖端,注塑时尖端容易熔融于注塑材料中,进一步提高防水性能,从而提升线圈的绝缘性能。其中,图7的箭头是指水分渗透的流向。
本实施方式中,第一弧形面172为四分之一的圆形面,此时三个中间防水筋17依次连接且呈波浪形。
本实施方式中,防水结构还包括凸条18,外防水筋16和中间防水筋17均设置在凸条18上,凸条18的两个侧面上设有第一凹槽181,以延长渗透距离,防止水分沿第一端环12的端面渗透到插针安装部15上的插针安装孔151处,进而提升线圈的绝缘性能。具体地,第一凹槽181的横截面形状呈半圆 形。作为可替换的实施方式,第一凹槽181的横截面形状呈V形。
本实施方式中,第二凹槽141的竖直槽壁与竖直面161在一个平面内。
本实施方式中,防水结构的中间防水筋17设有三个。当然,中间防水筋17的个数并不局限于此。
作为可替换的实施方式,也可以不设置凸条18,直接将外防水筋16和中间防水筋17设置在连接部14上,此时第二凹槽141的竖直槽壁与竖直面161连接。
实施方式三
图9至图11示出了本申请的实施方式三的线圈骨架10的结构,实施方式三的线圈骨架与实施方式一的区别在于防水结构的不同。在实施方式三中,曲面包括依次连接的第一斜面173、平面174及第二斜面175,第一斜面173和第二斜面175均相对于第一端环12的端面倾斜设置,平面174平行于端面,即中间防水筋17的横截面形状呈梯形。其中,图10的箭头是指水分渗透的流向。
本实施方式中,第一斜面173和平面174呈钝角夹角,第二斜面175和平面174呈钝角夹角,便于加工中间防水筋,降低加工难度。
本实施方式中,外防水筋16的横截面形状呈倒V形。外防水筋16的表面包括相对于第一端环的端面倾斜设置的第三斜面和第四斜面,第四斜面与第一斜面173连接。第三斜面与端面呈锐角夹角。
本实施方式中,第二凹槽141的竖直槽壁与第三斜面通过一平面连接。
本申请还提供了一种线圈,其包括:上述的线圈骨架。图4和图5的线圈使用实施方式一中的线圈骨架。线圈还包括电磁极板20、插针30、漆包线及外壳40,制造线圈时,将漆包线缠绕在线圈骨架10上,再将插针30插接 在插针安装部15上的插针安装孔151,然后将漆包线的两个端子与插针30焊接,两个线圈骨架10通过两个电磁极板20连接,将外壳套在线圈骨架外,最后进行包装注塑。
以上所述实施方式的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施方式中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
本技术领域的普通技术人员应当认识到,以上的实施方式仅是用来说明本申请,而并非用作为对本申请的限定,只要在本申请的实质精神范围内,对以上实施方式所作的适当改变和变化都落在本申请要求保护的范围内。

Claims (10)

  1. 一种线圈骨架,其特征在于,包括:
    绕线部;
    第一端环和第二端环,设置在所述绕线部的两端处;
    连接部,设置在所述第一端环的外边缘上;
    插针安装部,设置在所述连接部的远离所述第一端环的一侧上;
    其中,所述连接部上设有防水结构,所述防水结构包括两个外防水筋和位于两个所述外防水筋之间的至少一个中间防水筋,所述外防水筋具有尖端,以便于与注塑材料熔融。
  2. 根据权利要求1所述的线圈骨架,其中,所述中间防水筋的表面为曲面,以延长渗透距离。
  3. 根据权利要求2所述的线圈骨架,其中,所述曲面为半圆形面;
    或者,所述曲面包括两个相连接且向内拱起弯曲的第一弧形面。
  4. 根据权利要求2所述的线圈骨架,其中,所述曲面包括依次连接的第一斜面、平面及第二斜面,所述第一斜面和所述第二斜面均相对于所述第一端环的端面倾斜设置,所述平面平行于所述端面。
  5. 根据权利要求4所述的线圈骨架,其中,所述第一斜面和所述平面呈钝角夹角,所述第二斜面和所述平面呈钝角夹角。
  6. 根据权利要求1所述的线圈骨架,其中,所述外防水筋的表面包括相连接的竖直面和第二弧形面,所述竖直面垂直于所述第一端环的端面,或者,所述外防水筋的横截面形状呈倒V形。
  7. 根据权利要求1所述的线圈骨架,其中,所述防水结构还包括凸条,所述外防水筋和所述中间防水筋均设置在所述凸条上,所述凸条的至少一个侧 面上设有第一凹槽,以延长渗透距离。
  8. 根据权利要求7所述的线圈骨架,其中,所述第一凹槽的横截面形状呈半圆形。
  9. 根据权利要求1所述的线圈骨架,其中,所述连接部上还设有第二凹槽,所述第二凹槽位于所述第一端环和所述防水结构之间,和/或,两个所述外防水筋相对于所述中间防水筋的中表面的中心线对称设置。
  10. 一种线圈,其特征在于,包括:权利要求1至9中任一项所述的线圈骨架。
PCT/CN2021/101963 2020-08-14 2021-06-24 线圈骨架及线圈 WO2022033190A1 (zh)

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