Electromagnetic solenoid based on composite conduction

Abstract

The utility model discloses an electromagnetic solenoid based on composite conduction, which relates to the technical field of electrical connection and comprises a framework and a coil wound on the framework. The lug plate is fixed at one end of the framework and is used for being welded with an outgoing line of a coil; the elastic sheet is fixed at one end of the framework and is used for being electrically connected with external equipment; the elastic sheet is provided with a first contact and a welding surface, and the elastic sheet is in local extrusion contact with the lug plate through the first contact and is in local welding connection with the lug plate through the welding surface. By adopting the scheme, the wiring sheet can be prevented from circuit break failure caused by pseudo soldering and solder skips through a composite mode of combining extrusion contact conduction and welding connection conduction.

Description

Technical Field

[0001] This utility model relates to the field of electrical connection technology, specifically to an electromagnetic solenoid based on composite conductivity. Background Technology

[0002] With the rapid development of electromagnetic solenoid applications, the reliability, convenience, and low cost of electromagnetic solenoid connections are receiving increasing attention.

[0003] Electromagnetic solenoids can cause serious consequences for automobiles and other machinery due to open circuit failure. Poor soldering and missing soldering are the most important causes of open circuit failure in electromagnetic solenoids. Therefore, there is an urgent need for an electromagnetic solenoid that can reliably ensure that it will not cause open circuit risk. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention aims to provide an electromagnetic solenoid based on composite conductivity. This solution combines extrusion contact conductivity with welding connection conductivity to ensure that the connecting pieces avoid open circuit failures caused by poor soldering or missing soldering.

[0005] This utility model is achieved through the following technical solution:

[0006] An electromagnetic solenoid based on composite conductivity, comprising:

[0007] A skeleton and a coil wound around the skeleton;

[0008] A connector, which is fixed to one end of the frame and is used to weld to the lead wire of the coil;

[0009] A spring clip, which is fixed to one end of the frame and is used for electrical connection with external devices;

[0010] The spring has a first contact point and a welding surface. The spring makes partial contact with the terminal block through the first contact point and is partially welded to the terminal block through the welding surface.

[0011] Compared to existing technologies, electromagnetic solenoid failure due to open circuits can lead to serious consequences in automobiles and other machinery. Poor soldering and incomplete soldering are the most significant causes of such failures. This invention provides an electromagnetic solenoid based on composite conductivity. In this design, the connecting piece and the spring are compressed during insertion into the frame. The first contact point of the spring contacts the connecting piece, achieving conductive connection through compression. This connection method offers good stability, convenient manufacturing, and low cost. Furthermore, the composite conductive connection method of welding the connecting piece and the spring contact allows the connecting piece to avoid the risks of poor soldering and incomplete soldering during the manufacturing process without increasing costs. During long-term use, it ensures that the connecting piece will not cause electrical open circuits, thus guaranteeing the reliability and service life of the electromagnetic solenoid.

[0012] The specific design includes a frame with a winding groove in the middle for the coil to wind smoothly. The connecting piece and the spring are fixed to the same end platform of the frame and positioned close together. The connecting piece is used to weld to the coil's lead wire (enameled wire), while the spring connects to the connecting piece and serves as a relay connector for electrical connection to external equipment. In actual use, because the spring can make contact with the connecting piece through the first contact point and weld to the connecting piece through the welding surface, a composite method combining conductive contact through compression and conductive connection through welding is used. This ensures that the connecting piece avoids open-circuit failure caused by poor soldering or missing solder. During long-term use, it ensures that the connecting piece will not cause electrical open-circuit risks, thus guaranteeing the reliability and service life of the electromagnetic solenoid.

[0013] A further refinement, for ease of welding, includes a vertical plate segment at the lower part of the spring piece. The welding surface and the first contact point are both located on the same side of the vertical plate segment, with the first contact point positioned below the welding surface. This arrangement positions the welding surface above the first contact point, allowing sufficient space for welding operations.

[0014] In the existing production process of electromagnetic solenoids, since only the connecting piece is set, in order to achieve electrical connection with external equipment, it is necessary to use a mold to coat the electromagnetic solenoid with plastic. In addition, the external equipment also needs to be equipped with a corresponding plug to achieve mutual connection. This not only increases the production process but also increases the production cost. Therefore, in order to reduce the plastic coating process and plastic coating material, and reduce the number of plugs used by the customer, the spring is provided with a vertical plate segment, a horizontal support plate segment and an elastic arm from bottom to top. The upper end of the vertical plate segment is connected to the horizontal support plate segment and extends towards the connecting piece.

[0015] The elastic arm includes two connected elastic plates with an included angle between them, and the included angle is variable under the action of elastic force; the free end of the elastic plate away from the horizontal support plate segment has a second contact point, and the free end of the elastic plate is inclined in a direction gradually away from the horizontal support plate segment. In this design, the spring clip comprises, from bottom to top, a vertical plate segment, a horizontal support plate segment, and an elastic arm. The horizontal support segment serves as an intermediate support, connecting the lower vertical plate segment and the upper elastic arm. The vertical plate segment extends towards the connector to bring it closer to the connector, facilitating connection between the first contact and the welding surface on the vertical plate segment. The elastic arm is made of a flexible metal material and includes two connected elastic plates. One end of the lower elastic plate is connected to the horizontal support plate segment via an arc-shaped plate, while the other end is connected to the upper elastic plate via another arc-shaped plate, forming an S-shape. The upper elastic plate is angled and has a second contact. When connecting to external devices, the second contact can be directly pressed against the external device, creating a stable electrical connection. This design, by adding a spring clip, eliminates the need for molding, resulting in high reliability. It also allows customers to reduce the number of plugs and lower costs.

[0016] A further solution, to facilitate the protection of the spring contact and the connector, and to provide a stable support surface for the external device, includes a fixed bracket. The fixed bracket is fixed to one end of the frame and has a through slot, within which both the connector and the spring contact are located; the elastic arm partially extends out of the through slot. In this solution, a fixing structure is provided at one end of the frame, and the fixed bracket is fixedly connected to the fixing structure. At this time, both the spring contact and the connector are located in the through slot of the fixed bracket, thus protecting them. Furthermore, the elastic arm of the spring contact partially extends out of the through slot opening. This allows the fixed bracket to be directly fastened to the electrical connection surface of the external device, and further fixing can be achieved using additional fasteners. After fixing, the elastic force of the elastic arm ensures that the second contact always abuts against the external device, achieving a reliable connection.

[0017] A further improvement involves providing support for the spring contact by including a support surface within the through slot. This support surface supports the horizontal support plate segment. The support surface is offset from the bottom slot, while the vertical plate segment extends towards the connector. This allows the vertical plate segment to avoid the support surface when the spring contact is inserted into the through slot, thus allowing it to fit into the slot. The horizontal support segment rests directly on the support surface, ensuring stable placement of the spring contact and preventing deformation caused by excessive elastic force from the elastic arm when connected to external devices.

[0018] In a further embodiment, there are two terminals and two springs, and the two terminals and two springs are symmetrically arranged on the frame.

[0019] A further embodiment, as a specific structure of a connector, has a pressing contact section and a welding section extending outward from bottom to top on the opposite sidewalls of the two connectors. The first contact point is used to press into contact with the pressing contact section; the welding surface is used to weld with the welding section.

[0020] A further improvement is made by using a flexible metal material for the connector to avoid the spring when it is inserted; the welding section can be bent towards the side of the connector. In this design, the material of the connector is deformable, such as using brass or other metals. When the spring is inserted, the welding section is bent away from the spring, thus creating space for the spring to move downwards. During this process, the first contact gradually applies pressure to the pressing contact section, thereby achieving reliable contact. After the spring is in place, the welding section is reversed and reset, bringing it close to the welding surface of the spring, thus achieving a welded connection.

[0021] A further refinement, to ensure a reliable connection of the enameled wire, includes curved cantilever sections on the opposing sidewalls of the two connecting pieces. These curved cantilever sections are located above the welding section and bend towards each other. In this design, the two curved cantilever sections bend towards each other, and the two leads of the coil are welded to the inner sides of the two curved cantilever sections respectively. After welding, due to the deformability of the curved cantilever sections, they are compressed and deformed towards each other, thereby clamping and fixing the two leads inside, thus improving the reliability of the connection.

[0022] A further improvement, to achieve quick connection between the connector and the spring, includes insert segments at the bottom of both the connector and the spring. One end of the frame has a slot for inserting these segments. Both sides of the insert segments are serrated, and the slot deforms upon insertion. The slot can be made of a flexible material such as plastic, allowing it to slightly expand and deform when the insert segment is inserted, creating a compression effect. The serrations on both sides of the insert segment, preferably reversed, facilitate insertion while ensuring a reliable connection and preventing slippage, thus achieving an anti-slip effect.

[0023] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0024] 1. This utility model provides an electromagnetic solenoid based on composite conductivity. By adopting this solution, a composite method combining extrusion contact conductivity and welding connection conductivity can be used to ensure that the connecting piece avoids open circuit failure caused by poor soldering or missing soldering.

[0025] 2. This utility model provides an electromagnetic solenoid based on composite conductivity, where the elastic arm partially extends out of the through-slot opening. This allows for direct mounting of the fixing bracket onto the electrical connection surface of the external device during connection, followed by additional fasteners to secure the two. Once fixed, the elastic force of the elastic arm ensures that the second contact point remains in contact with the external device, achieving a reliable connection. This solution, by adding an additional spring contact, eliminates the need for molding, resulting in high reliability. It also allows customers to reduce the number of plugs required and lowers costs. Attached Figure Description

[0026] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 An exploded view of the electromagnetic solenoid provided by this utility model;

[0028] Figure 2 A schematic diagram of the skeleton provided by this utility model;

[0029] Figure 3 A schematic diagram of the structure of the connector provided by this utility model;

[0030] Figure 4 A schematic diagram of the coil structure provided by this utility model;

[0031] Figure 5 A schematic diagram of the structure of the spring sheet provided by this utility model;

[0032] Figure 6 A schematic diagram of the structure of the fixing bracket provided by this utility model;

[0033] Figure 7 This is an overall assembly drawing of the electromagnetic solenoid provided by this utility model.

[0034] The attached diagram shows the markings and corresponding component names:

[0035] 1-Frame, 1a-Wound groove, 1b-Slot, 2-Connecting piece, 2a-First insertion segment, 2b-Extrusion contact segment, 2c-Welding segment, 2d-Bending cantilever segment, 3a-Coil, 3b-Lead wire, 4-Spring, 4a-Second contact, 4b-Elastic arm, 4c-Horizontal support plate segment, 4d-Welding surface, 4e-First contact, 4f-Second insertion segment, 5-Fixed bracket, 5a-Supporting surface. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0037] Example:

[0038] This embodiment provides an electromagnetic solenoid based on composite conductivity, such as... Figures 1-7 As shown, it includes:

[0039] The frame 1 and the coil 3a wound on the frame 1;

[0040] Connecting piece 2, which is fixed to one end of the frame 1 and is used to weld to the lead wire 3b of the coil 3a;

[0041] Spring 4, which is fixed to one end of the frame 1 and is used for electrical connection with external equipment;

[0042] The spring 4 has a first contact 4e and a welding surface 4d. The spring 4 is in partial compression contact with the terminal piece 2 through the first contact 4e, and is partially welded to the terminal piece 2 through the welding surface 4d.

[0043] Compared to existing technologies, where open-circuit failure of electromagnetic solenoids can lead to serious consequences for machinery such as automobiles, and where poor soldering and incomplete soldering are the most significant causes of open-circuit failure, this invention provides an electromagnetic solenoid based on composite conductivity. In this design, when the connecting piece 2 and the spring piece 4 are inserted into the frame 1, the first contact point 4e of the spring piece 4 presses against the connecting piece 2, achieving conductive connection through this compression contact. This connection method features good stability, convenient manufacturing process, and low cost. Furthermore, the composite conductive connection between the connecting piece 2 and the spring piece 4 through welding allows the connecting piece 2 to avoid the risks of poor soldering and incomplete soldering during the manufacturing process without increasing costs. During long-term use, it ensures that the connecting piece 2 will not cause electrical open-circuit risks, thereby guaranteeing the reliability and service life of the electromagnetic solenoid.

[0044] The specific design includes a frame 1 with a winding groove in the middle for the coil 3a to be wound smoothly. Connecting piece 2 and spring piece 4 are fixed to the same end platform of the frame 1 and positioned close to each other. Connecting piece 2 is used to weld to the lead wire 3b of the coil 3a (i.e., enameled wire), while spring piece 4 connects to connecting piece 2 and serves as a transfer connector for electrical connection with external equipment. In actual use, since spring piece 4 can make contact with connecting piece 2 through the first contact point 4e and weld to connecting piece 2 through the welding surface 4d, the combination of conductive contact through compression and conductive connection through welding ensures that connecting piece 2 avoids open circuit failure due to poor soldering or missing soldering. During long-term use, it ensures that connecting piece 2 will not cause electrical open circuit risk, thus guaranteeing the reliability and service life of the electromagnetic solenoid.

[0045] In this embodiment, to facilitate welding, the lower part of the spring piece 4 includes a vertical plate segment. The welding surface 4d and the first contact point 4e are both located on the same side of the vertical plate segment, and the first contact point 4e is located below the welding surface 4d. That is, the welding surface 4d is positioned above the first contact point 4e to facilitate leaving space for welding operations.

[0046] In the existing production process of electromagnetic solenoids, since only the connecting piece 2 is provided, in order to achieve electrical connection with external equipment, it is necessary to coat the electromagnetic solenoid with plastic using a mold. Furthermore, the external equipment also needs to be equipped with corresponding plugs to achieve mutual connection. This not only increases the production process but also increases the production cost. Therefore, in order to reduce the plastic coating process and plastic coating materials, and to reduce the number of plugs used by the client, the spring piece 4 is provided with a vertical plate segment, a horizontal support plate segment 4c, and an elastic arm 4b from bottom to top. The upper end of the vertical plate segment is connected to the horizontal support plate segment 4c and extends towards the connecting piece 2.

[0047] The elastic arm 4b includes two connected elastic plates with an included angle between them, and the included angle is variable under the action of elastic force; the free end of the elastic plate away from the horizontal support plate segment 4c has a second contact point 4a, and the free end of the elastic plate is inclined in a direction that gradually moves away from the horizontal support plate segment 4c. In this design, the spring 4 comprises, from bottom to top, a vertical plate segment, a horizontal support plate segment 4c, and an elastic arm 4b. The horizontal support segment serves as an intermediate support, connecting the lower vertical plate segment and the upper elastic arm 4b. The vertical plate segment extends towards the connector 2, allowing it to be closer to the connector 2 and facilitating connection between the first contact 4e and the welding surface 4d on the vertical plate segment and the connector 2. The elastic arm 4b is made of a flexible metal material and includes two connected elastic plates. One end of the lower elastic plate is connected to the horizontal support plate segment 4c via an arc-shaped plate, while the other end is connected to the upper elastic plate via another arc-shaped plate, forming an S-shape. The upper elastic plate is inclined and has a second contact 4a. When connecting to external devices, the second contact 4a can be directly pressed against the external device, creating a stable electrical connection. This design, by adding the spring 4, eliminates the need for molding, resulting in high reliability, reducing the number of plugs required by the client, and lowering costs.

[0048] In this embodiment, to facilitate the protection of the spring piece 4 and the connector piece 2 and to provide a stable support surface for the external device, a fixing bracket 5 is also included. The fixing bracket 5 is fixed to one end of the frame 1, and the fixing bracket 5 has a through groove. Both the connector piece 2 and the spring piece 4 are located in the through groove; the elastic arm 4b partially extends out of the through groove. In this solution, a fixing structure is provided at one end of the frame 1, and the fixing bracket 5 is fixedly connected to the fixing structure. At this time, both the spring piece 4 and the connector piece 2 are located in the through groove of the fixing bracket 5 to protect them. In addition, in the spring piece 4, its elastic arm 4b partially extends out of the opening of the through groove. In this way, the fixing bracket 5 can be directly fastened to the electrical connection surface of the external device, and the two can be fixed by additional fasteners. After fixing, the elastic force of the elastic arm 4b can always ensure that the second contact 4a abuts against the external device, achieving a reliable connection.

[0049] In this embodiment, to support the spring piece 4, the through groove also has a support surface 5a, which supports the horizontal support plate segment 4c. The support surface 5a is offset from the bottom slot 1b, and the vertical plate segment extends towards the terminal piece 2. Thus, when the spring piece 4 is inserted into the through groove, the vertical plate segment can avoid the support surface 5a and be inserted into the slot 1b; while the horizontal support segment sits directly on the support surface 5a, achieving stable placement of the spring piece 4 and preventing deformation of the entire spring piece 4 due to excessive elastic force of the elastic arm 4b when connected to external equipment.

[0050] In this embodiment, there are two of each of the connector 2 and the spring 4, and the two connectors 2 and the two springs 4 are symmetrically arranged on the frame 1.

[0051] In this embodiment, as a specific structure of a connector 2, two connectors 2 have extrusion contact sections 2b and welding sections 2c extending outward from bottom to top on their opposite sidewalls. The first contact point 4e is used to make extrusion contact with the extrusion contact section 2b; the welding surface 4d is used to weld with the welding section 2c.

[0052] In this embodiment, to avoid the spring 4 when it is inserted, the connector 2 is made of a soft metal material; the welding section 2c can be bent toward the side of the connector 2. In this solution, the material of the connector 2 is deformable, such as using brass or other metals. When the spring 4 is inserted, the welding section 2c is bent away from the spring 4, thus leaving space for the spring 4 to move downward. During this process, the first contact 4e will gradually apply pressure to the pressing contact section 2b, thereby achieving reliable contact. When the spring 4 moves into place, the welding section 2c is reversed and reset, so that it is close to the welding surface 4d of the spring 4, and then a welding connection can be achieved.

[0053] In this embodiment, to achieve a reliable connection of the enameled wire, each of the two oppositely facing sidewalls of the connector 2 is provided with a bent cantilever section 2d. The bent cantilever section 2d is located above the welding section 2c, and the two bent cantilever sections 2d bend towards each other. In this scheme, the two bent cantilever sections 2d bend towards each other, and the two leads 3b of the coil 3a are respectively welded to the inner side of the two bent cantilever sections 2d. After welding, due to the deformability of the bent cantilever sections 2d, the two bent cantilever sections 2d are squeezed and deformed towards each other, thereby clamping and fixing the two leads 3b inside, thus improving the reliability of the connection.

[0054] In this embodiment, to achieve quick connection between the connector 2 and the spring 4, both the connector 2 and the spring 4 have insert segments at their bottoms. One end of the frame 1 has a slot 1b for inserting the insert segments. Both sides of the insert segments are serrated, and the slot 1b deforms upon insertion. The slot 1b can be made of a flexible material such as plastic. When the insert segment is inserted into the slot 1b, it slightly expands and deforms, creating compression. The serrations on both sides of the insert segment, preferably reversed teeth, facilitate insertion while also ensuring a reliable connection, preventing free slippage and achieving an anti-slip effect.

[0055] Working principle:

[0056] During installation, coil 3a is first wound in the winding groove of frame 1, and fixed bracket 5 is installed at one end of frame 1. At this time, the two leads 3b of coil 3a are located in the through groove of fixed bracket 5. Then, two connecting pieces 2 are inserted into the through groove, so that the bottom of the connecting pieces 2 is inserted into the slot 1b at one end of frame 1 for fixation. At this time, the welding section 2c on the two connecting pieces 2 is bent to one side to avoid the spring piece 4 when it is inserted. The two leads 3b are welded to the inside of the bent cantilever section 2d of the two connecting pieces 2 respectively. After welding, the two bent cantilever sections 2d are squeezed and deformed towards each other, so that the two leads 3b can be clamped and fixed inside.

[0057] Subsequently, two spring clips 4 are inserted into the through slot. The vertical plate segment of the spring clip 4 is on one side of the connector 2. During the downward insertion process, the first contact point 4e on the vertical plate segment gradually applies pressure to the pressing contact segment 2b, thereby achieving reliable contact. When the spring clip 4 is inserted into the slot 1b and the horizontal support segment is placed on the support surface 5a, the welding segment 2c can be reversed and reset so that it is close to the welding surface 4d of the spring clip 4, and then a welding connection can be achieved. At this time, the elastic arm 4b partially protrudes from the opening of the through slot. In this way, the fixing bracket 5 can be directly fastened to the electrical connection surface of the external device, and the two can be fixed by additional fasteners. After fixing, the elastic force of the elastic arm 4b can always ensure that the second contact point 4a abuts against the external device, achieving a reliable connection. That is, the additional setting of the spring clip 4 does not require plastic wrapping through a mold, which has high reliability, allows the client to reduce plugs, and reduces costs.

[0058] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A composite conductive based electromagnetic solenoid characterized in that, It comprises: a skeleton (1) and a coil (3a) wound on the skeleton (1); a terminal lug (2) fixed on one end of the skeleton (1) and used for welding with the lead-out wire (3b) of the coil (3a); a spring sheet (4) fixed on one end of the skeleton (1) and used for electrical connection with external equipment; the spring sheet (4) is provided with a first contact (4e) and a welding surface (4d), the spring sheet (4) is partially in contact with the terminal lug (2) through the first contact (4e), and is partially welded with the terminal lug (2) through the welding surface (4d).

2. An electromagnetic solenoid based on composite conduction as claimed in claim 1, wherein, The lower part of the spring sheet (4) comprises a vertical plate section, the welding surface (4d) and the first contact (4e) are located on the same side of the vertical plate section, and the first contact (4e) is located below the welding surface (4d).

3. An electromagnetic solenoid based on composite conduction as claimed in claim 2, wherein, The spring sheet (4) further comprises a horizontal support plate section (4c) located above the vertical plate section, the upper end of the vertical plate section is connected with the horizontal support plate section (4c) and extends towards the terminal lug (2).

4. An electromagnetic solenoid based on composite conduction as claimed in claim 3, wherein, The spring sheet (4) further comprises a resilient arm (4b) located above the horizontal support plate section (4c) and connected with the horizontal support plate section (4c); the resilient arm (4b) comprises two resilient plates connected with each other, the two resilient plates have an included angle which can be changed under the action of elastic force; the free end of the resilient plate away from the horizontal support plate section (4c) is provided with a second contact (4a).

5. An electromagnetic solenoid based on composite conduction as claimed in claim 4, wherein, The free end of the resilient plate away from the horizontal support plate section (4c) is arranged in a direction gradually away from the horizontal support plate section (4c).

6. The composite conductive based electromagnetic solenoid of claim 1, wherein, The terminal lug (2) and the spring sheet (4) are both two, and the two terminal lugs (2) and the two spring sheets (4) are symmetrically arranged on the skeleton (1).

7. An electromagnetic solenoid based on composite conduction according to claim 6, characterized in that, The side walls of the two terminal lugs (2) away from each other are sequentially provided from bottom to top with an extrusion contact section (2b) and a welding section (2c) extending outward, the first contact (4e) is used for extrusion contact with the extrusion contact section (2b), and the welding surface (4d) is used for welding with the welding section (2c).

8. An electromagnetic solenoid based on composite conduction according to claim 7, characterized in that, The terminal lug (2) is made of soft metal material; the welding section (2c) can be bent towards the side direction of the terminal lug (2).

9. An electromagnetic solenoid based on composite conduction according to claim 8, characterized in that, The side walls of the two terminal lugs (2) away from each other are further provided with a curved cantilever section (2d) located above the welding section (2c), and the two curved cantilever sections (2d) are bent towards each other.

10. The electromagnetic solenoid based on composite conduction according to claim 1, wherein, The bottom of the terminal lug (2) and the spring sheet (4) is provided with an insertion strip section, one end of the skeleton (1) is provided with an insertion slot (1b) for the insertion of the insertion strip section, the two sides of the insertion strip section are serrated, and the insertion slot (1b) can be deformed under the insertion of the insertion strip section.

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