CN220731272U

CN220731272U - Electromagnetic coil

Info

Publication number: CN220731272U
Application number: CN202321244074.0U
Authority: CN
Inventors: 周迪
Original assignee: Zhejiang Sanshang Zhidi Technology Co ltd
Current assignee: Zhejiang Sanshang Zhidi Technology Co ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2024-04-05
Anticipated expiration: 2033-05-22

Abstract

The utility model relates to the technical field of electromagnetic control, and discloses an electromagnetic coil. The electromagnetic coil comprises a coil and a supporting component, the supporting component comprises a framework and two contact pin components, the framework comprises a winding part, a first stopping part and a second stopping part, the first stopping part and the second stopping part are respectively arranged at two ends of the winding part along the axial direction, the contact pin components comprise a first extending piece and a second extending piece, the first extending piece is connected with the first stopping part and extends along the radial direction of the winding part, the second extending piece is connected with one end of the first extending piece far away from the first stopping part and extends along the axial direction of the winding part towards one end of the second stopping part, the coil is wound on the winding part and two ends of the coil are respectively connected with the two first extending pieces, and the first extending piece and the second extending piece are formed in a split mode. The electromagnetic coil is convenient to realize automation of winding during assembly and has high production efficiency.

Description

Electromagnetic coil

Technical Field

The utility model relates to the technical field of electromagnetic control, in particular to an electromagnetic coil.

Background

Solenoid valves such as threaded cartridge valves are widely used in the fields of engineering machinery, agricultural machinery, vehicle manufacturing, and the like. One core component of the cartridge valve is a solenoid.

The electromagnetic coil comprises a framework, two contact pins and a coil. The coil is wound on the framework, the two contact pins are respectively fixed on the framework, and two ends of the coil are respectively and electrically connected with the two contact pins. According to different practical requirements, the extending directions of the pins are all different, as shown in fig. 1, some electromagnetic coils require the pins 2' to be L-shaped, and a first end of each pin 2' is connected with an upper end of the corresponding framework 1', and a second end is parallel to the framework 1' and extends towards a lower end of the framework 1 '. In the production process of the electromagnetic coil, one end of the enameled wire is usually fixed on the first contact pin 2', then the enameled wire is wound on the framework 1', and finally the other end of the enameled wire is fixed on the second contact pin 2 '. Due to the arrangement mode of the L-shaped contact pin 2', the second end of the contact pin 2' can interfere with the winding of the coil 3', and the automation of winding is difficult to realize based on the existing winding equipment.

Therefore, there is a need for an electromagnetic coil to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide an electromagnetic coil, which is convenient for realizing automation of winding during assembly.

To achieve the purpose, the utility model adopts the following technical scheme:

electromagnetic coil, including coil and supporting component, supporting component includes:

the framework comprises a winding part, a first stopping part and a second stopping part, wherein the first stopping part and the second stopping part are respectively arranged at two ends of the winding part along the axial direction;

the two contact pin assemblies comprise a first extending piece and a second extending piece, the first extending piece is connected with the first stop portion and extends along the radial direction of the winding portion, the second extending piece is connected with one end, far away from the first stop portion, of the first extending piece and extends along the axial direction of the winding portion towards one end of the second stop portion, the coil is wound on the winding portion, two ends of the coil are respectively connected with the two first extending pieces, and the first extending piece and the second extending piece are formed in a split mode.

As an alternative, a boss portion is disposed at an end of the first extension member away from the first stop portion, and the second extension member is welded to the boss portion.

As an alternative, the second extension member includes:

an extension part configured to be columnar and extending in an axial direction of the winding part;

and one end of the connecting part is connected with the extending part, and the other end of the connecting part is welded with the boss part.

As an alternative, the extension portion and the connection portion are integrally formed, and the connection portion is formed by extrusion and bending.

As an alternative, the first extension member includes a body portion and a hooking portion, the body portion is connected with the first stop portion and the second extension member, respectively, and the hooking portion is hooked with and fixedly connected with an end portion of the coil.

As an alternative, both the first extension and the second extension are made of a red copper material.

As an alternative, the first stop portion is provided with two plugging holes, and the two first extension members are respectively plugged in the two plugging holes so as to be respectively and fixedly connected with the first stop portion.

As an alternative, the first stop portions are provided with:

a first wire passing groove which starts from the peripheral surface of the first stop part and extends to the peripheral surface of the winding part, and one end of the coil is accommodated in the first wire passing groove;

the second wire passing groove starts from the peripheral surface of the first stop part and extends towards the peripheral surface of the first stop part, and the other end of the coil is accommodated in the second wire passing groove.

As an alternative, the electromagnetic coil further includes:

the plastic layer is coated outside the coil and the supporting component, a containing cavity communicated with the outside of the electromagnetic coil is formed in the plastic layer, and the second extension piece is at least partially inserted into the containing cavity;

and the support shell is made of a metal material and is coated with at least part of the plastic layer.

As an alternative scheme, the electromagnetic coil further comprises a waterproof piece, the waterproof piece is arranged in the accommodating cavity and embedded in the plastic layer, and the two second extension pieces penetrate through the waterproof piece.

The utility model has the beneficial effects that:

according to the electromagnetic coil, the contact pin assembly comprises the first extension piece and the second extension piece, the first extension piece and the second extension piece are formed in a split mode, so that when the electromagnetic coil is assembled, only the first extension piece can be firstly installed on the framework, the end portion of the enameled wire is conveniently fixed on the first extension piece, at the moment, the first extension piece extends along the radial direction of the framework, and the second extension piece is not installed, interference on winding of the enameled wire is avoided, automatic winding of the coil can be completed by adopting the conventional common winding equipment, the assembly efficiency of the electromagnetic coil is improved, and after winding of the coil is finished, the two second extension pieces are respectively fixed with the corresponding first extension pieces, so that the contact pin assembly can be finally constructed into an L-shaped structure, and the use requirement is met. The electromagnetic coil is convenient for realizing automation of winding during assembly, thereby improving production efficiency.

Drawings

FIG. 1 is a schematic diagram of a prior art electromagnetic coil;

FIG. 2 is a schematic structural view of an electromagnetic coil according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of an electromagnetic coil provided in an embodiment of the present utility model;

FIG. 4 is a schematic view of a support assembly according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a support assembly provided in accordance with an embodiment of the present utility model;

fig. 6 is an exploded view of an electromagnetic coil provided in an embodiment of the present utility model.

In the figure:

1', a framework; 2', pins; 3', a coil;

10. a support assembly;

11. a skeleton; 111. a winding part; 112. a first stop portion; 1121. a plug hole; 1122. a first wire passing groove; 1123. a second wire passing groove; 113. a second stop portion;

12. a pin assembly; 121. a first extension; 1211. a body portion; 1212. a boss portion; 1213. a hooking part; 122. a second extension; 1221. an extension; 1222. a connection part;

20. a coil;

30. a plastic layer; 31. a receiving chamber;

40. a support case; 41. circumferential ring members; 42. an end cap;

50. a waterproof piece.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present embodiment provides a solenoid coil that may be used in a threaded cartridge valve. As shown in fig. 2 to 4, the electromagnetic coil includes a support assembly 10, a coil 20, a plastic layer 30, and a support case 40. The support assembly 10 includes a frame 11 and two pin assemblies 12, the two pin assemblies 12 are connected with the frame 11, the coil 20 is formed by winding an enameled wire on the frame 11, two ends of the coil 20 (i.e. a winding start end and a winding end of the enameled wire) are respectively connected with the two pin assemblies 12 correspondingly, and the two pin assemblies 12 are used for realizing electrical connection between the coil 20 and an external circuit. The plastic layer 30 is coated outside the support assembly 10 and the coil 20, and the plastic layer 30 is an insulating layer, so that the coil 20 and the pin assembly 12 can be insulated and protected. The supporting shell 40 is coated with at least part of the plastic layer 30, and the supporting shell 40 is made of metal material, so that on one hand, the metal supporting shell 40 can increase the magnetic flux of the coil 20, and further improve the inductance of the coil 20; on the other hand, the supporting case 40 can protect the electromagnetic coil and improve the service life of the electromagnetic coil.

As shown in fig. 3 and 4, the skeleton 11 includes a winding portion 111, a first stop portion 112, and a second stop portion 113, wherein the winding portion 111 has a cylindrical structure, and the winding portion 111 is used for winding an enamel wire. The first stop portion 112 and the second stop portion 113 are respectively disposed at two ends of the winding portion 111 along the axial direction, so that the framework 11 is configured into an "I" shape structure, and the first stop portion 112 and the second stop portion 113 can play a role in stopping the coil 20, so that the enameled wire is prevented from falling off from the end portion of the winding portion 111 along the axial direction. The contact pin assembly 12 comprises a first extension piece 121 and a second extension piece 122, the first extension piece 121 is connected with the first stop part 112 and extends along the radial direction of the winding part 111, the second extension piece 122 is connected to one end of the first extension piece 121, which is far away from the first stop part 112, and the second extension piece 122 starts from the first extension piece 121 and extends towards the second stop part 113 along the axial direction of the winding part 111, so that the whole contact pin assembly 12 is constructed into an L-shaped structure, and the whole contact pin assembly 12 is positioned at the side of the framework 11, so that the actual use requirement can be met. The first extension member 121 and the second extension member 122 are formed separately.

The electromagnetic coil of the present embodiment is formed by providing the pin assembly 12 to include the first extension member 121 and the second extension member 122, and the first extension member 121 and the second extension member 122 are formed separately, so that when the electromagnetic coil is assembled: two first extension pieces 121 may be first installed on the backbone 11 so as to facilitate fixing of the winding start end of the enamel wire on the first extension pieces 121; at this time, since the first extension member 121 extends along the radial direction of the bobbin 11 and the second extension member 122 is not installed, interference is not generated to the winding of the coil 20, so that the automatic winding of the coil 20 can be completed by using the conventional common winding equipment, and the assembly efficiency of the electromagnetic coil is improved; when the winding of the coil 20 is completed, fixing the winding end of the enamel wire to the other first extension member 121; then, the two second extending members 122 are respectively fixed with the corresponding first extending members 121, so that the contact pin assembly 12 can be ensured to be constructed into an L-shaped structure finally, and the use requirement is met. That is, the electromagnetic coil of the present embodiment is convenient to realize automation of winding at the time of assembly, so that the production efficiency can be improved.

As shown in fig. 4 and 5, two insertion holes 1121 are provided on the first stop portion 112, and two first extension members 121 are inserted into the two insertion holes 1121 respectively, so as to be fixedly connected with the first stop portion 112 respectively, and the first extension members 121 are convenient to install and operate and simple in installation structure in an insertion fit manner. Alternatively, the first extension member 121 and the insertion hole 1121 may be interference fit therebetween, thereby improving the installation firmness of the first extension member 121. In the present embodiment, two insertion holes 1121 are provided on the peripheral surface of the first stopper 112.

Preferably, as shown in fig. 5, a side of the first stopper 112 facing the second stopper 113 is provided with a first wire passing groove 1122 and a second wire passing groove 1123. The first wire passing groove 1122 starts from the circumferential surface of the first stop portion 112 and extends to the circumferential surface of the winding portion 111, and the first wire passing groove 1122 is used for accommodating the starting end of the coil 20. After the winding start end of the enameled wire is fixed on the first extension piece 121, the winding start end reaches the winding part 111 along the first wire passing groove 1122, and the arrangement can avoid the enameled wire interfering with the winding start end in the winding process, so that the winding smoothness is ensured. The second wire passing groove 1123 starts from the circumferential surface of the first stopper 112 and extends toward the circumferential surface of the first stopper 112. When the winding of the enameled wire is finished, the winding tail end extends into the second wire passing groove 1123 and extends out of the peripheral surface of the first stop part 112, and is further connected with the first extension piece 121. The second wire passing groove 1123 is provided to enable the winding end of the enamel wire to extend more smoothly. Since the wound coil 20 has a certain thickness, the second wire passing groove 1123 does not have to extend to the winding portion 111, as long as the second wire passing groove 1123 is ensured to extend to the maximum outer diameter of the coil 20.

Preferably, the first extension member 121 and the second extension member 122 are welded together and are each made of a red copper material. On one hand, the red copper material has good conductivity, so that the resistance of the electromagnetic coil is reduced; on the other hand, the red copper material has good forming property, is convenient for processing more complex shapes, and is not easy to generate welding defects during welding.

Preferably, as shown in fig. 5, the first extension member 121 includes a body portion 1211 and a hooking portion 1213, wherein one end of the body portion 1211 is for being inserted into the insertion hole 1121, thereby achieving connection with the first stopper 112, and the other end of the body portion 1211 is for being welded with the second extension member 122. The hooking portion 1213 is connected to the main body 1211, and the hooking portion 1213 is adapted to be hooked to and fixedly connected to an end portion of the coil 20. The convenience of connection of the end of the coil 20 with the first extension member 121 is improved by providing the hooking portion 1213. Alternatively, the hooking portion 1213 is configured as a hook structure, and in other embodiments, the hooking portion 1213 may be configured as a hole, a hanging ring, or the like, which is not limited herein. In this embodiment, the body portion 1211 and the hooking portion 1213 are integrally formed, specifically, after cutting out the blank of the first extension member 121, the hooking portion 1213 is formed by a bending process.

Preferably, as shown in fig. 5, the first extension piece 121 further includes a boss portion 1212, the boss portion 1212 is disposed at an end of the body portion 1211 remote from the first stop portion 112, and the boss portion 1212 is used for welding connection with the second extension piece 122. By arranging the boss 1212, on one hand, the connection of the second extension piece 122 can be positioned, and the connection position precision of the first extension piece 121 and the second extension piece 122 is ensured; the arrangement of the boss 1212 on the other hand also facilitates the welding of the second extension 122 to the first extension 121. In this embodiment, the boss portion 1212 may be directly formed by punching.

Preferably, as shown in fig. 4 and 5, the second extension piece 122 includes an extension portion 1221 and a connection portion 1222, wherein the extension portion 1221 is configured as a columnar structure and extends in the axial direction of the winding portion 111, the connection portion 1222 is configured as an L-shaped sheet structure, one end of the connection portion 1222 is connected to the extension portion 1221, and the other end is welded to the boss portion 1212. The columnar extension 1221 facilitates connection and engagement of the pin assembly 12 with a plug of an external circuit, and by providing the connection portion 1222 of a sheet structure, the contact area of the second extension 122 with the boss portion 1212 can be increased, thereby improving the welding firmness of the first extension 121 and the second extension 122.

Preferably, in the present embodiment, the extension 1221 and the connection 1222 are integrally formed. When the second extension 122 is processed, the blank has a columnar structure, and the end of the columnar blank is flattened by extrusion, and then the flattened portion is bent, thereby obtaining the connection portion 1222.

Preferably, as shown in fig. 3 and 6, the plastic layer 30 is molded by injection molding, thereby ensuring tightness of the coating of the support assembly 10 and the coil 20, and thus ensuring a good insulation effect. Preferably, the plastic layer 30 is formed with a receiving cavity 31 in communication with the outside of the electromagnetic coil, a portion of the second extension member 122 is wrapped in the plastic layer 30, the free end of the second extension member 122 is inserted into the receiving cavity 31, and the receiving cavity 31 can protect the pin assembly 12 from bending and damaging the pin assembly 12.

Preferably, as shown in fig. 3 and 6, the electromagnetic coil further includes a waterproof member 50, the waterproof member 50 is disposed in the accommodating cavity 31 and embedded in the plastic layer 30, the waterproof member 50 is penetrated by the two second extending members 122, the waterproof member 50 can prevent external water vapor from entering the inside of the plastic layer 30 through the gap between the second extending members 122 and the plastic layer 30, so that the problem of short circuit or corrosion is avoided, and the service life of the electromagnetic coil is prolonged.

As shown in fig. 6, the support shell 40 of the present embodiment includes a circumferential ring member 41 and two end caps 42, wherein the circumferential ring member 41 surrounds the peripheral surface of the plastic layer 30, and in the present embodiment, the circumferential ring member 41 surrounds only a part of the peripheral surface of the plastic layer 30. The two end caps 42 are respectively connected to two ends of the plastic layer 30 along the axial direction, so that the electromagnetic coil can be more fully protected.

It is to be understood that the foregoing examples of the utility model are provided for the purpose of illustration only and are not intended to limit the scope of the utility model, which is defined by the claims, since modifications in both the detailed description and the application scope of the utility model will become apparent to those skilled in the art upon consideration of the teachings of the utility model. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. Electromagnetic coil, characterized by comprising a coil (20) and a support assembly (10), said support assembly (10) comprising:

the framework (11) comprises a winding part (111), a first stopping part (112) and a second stopping part (113), wherein the first stopping part (112) and the second stopping part (113) are respectively arranged at two ends of the winding part (111) along the axial direction;

two contact pin assemblies (12), contact pin assemblies (12) include first extension piece (121) and second extension piece (122), first extension piece (121) with first backstop portion (112) are connected and follow radial extension of wire winding portion (111), second extension piece (122) connect in first extension piece (121) keep away from the one end of first backstop portion (112), and follow the axial of wire winding portion (111) towards second backstop portion (113) extends, coil (20) are located around wire winding portion (111) and both ends respectively with two first extension piece (121) are connected, first extension piece (121) with second extension piece (122) components of a whole that can function independently shaping.

2. The electromagnetic coil as set forth in claim 1, wherein an end of the first extension member (121) remote from the first stopper portion (112) is provided with a boss portion (1212), and the second extension member (122) is welded to the boss portion (1212).

3. The electromagnetic coil as set forth in claim 2, wherein the second extension (122) includes:

an extension part (1221) configured to be columnar and extending in the axial direction of the winding part (111);

and a connection portion (1222) configured as an L-shaped sheet structure, wherein one end of the connection portion (1222) is connected to the extension portion (1221), and the other end is welded to the boss portion (1212).

4. A solenoid according to claim 3 wherein said extension (1221) and said connection (1222) are integrally formed, said connection (1222) being formed by extrusion and bending.

5. The electromagnetic coil as set forth in claim 2, characterized in that the first extension member (121) includes a body portion (1211) and a hooking portion (1213), the body portion (1211) being connected to the first stop portion (112) and the second extension member (122), respectively, the hooking portion (1213) being hooked and fixedly connected to an end portion of the coil (20).

6. The electromagnetic coil as set forth in any of claims 1-5, wherein the first extension (121) and the second extension (122) are each made of a red copper material.

7. The electromagnetic coil as set forth in any one of claims 1-5, wherein two insertion holes (1121) are provided on the first stop portion (112), and two first extension members (121) are inserted into the two insertion holes (1121) respectively, so as to be fixedly connected with the first stop portion (112) respectively.

8. The electromagnetic coil as set forth in any one of claims 1-5, wherein a side of the first stop (112) facing the second stop (113) is provided with:

a first wire passing groove (1122), wherein the first wire passing groove (1122) starts from the circumferential surface of the first stopper portion (112) and extends to the circumferential surface of the winding portion (111), and one end of the coil (20) is accommodated in the first wire passing groove (1122);

and a second wire passing groove (1123), wherein the second wire passing groove (1123) starts from the peripheral surface of the first stop part (112) and extends towards the peripheral surface of the first stop part (112), and the other end of the coil (20) is accommodated in the second wire passing groove (1123).

9. The electromagnetic coil as set forth in any one of claims 1-5, wherein the electromagnetic coil further comprises:

a plastic layer (30) coated outside the coil (20) and the supporting component (10), wherein the plastic layer (30) is formed with a containing cavity (31) communicated with the outside of the electromagnetic coil, and the second extension piece (122) is at least partially inserted into the containing cavity (31);

-a support shell (40) made of a metallic material, said support shell (40) covering at least part of said plastic layer (30).

10. The electromagnetic coil as set forth in claim 9, further comprising a waterproof member (50), the waterproof member (50) being disposed in the receiving cavity (31) and embedded in the plastic layer (30), both of the second extension members (122) penetrating the waterproof member (50).