An integrated connector coil and its manufacturing process

Abstract

The present invention provides an integrated joint coil and a manufacturing process thereof, comprising a skeleton, a winding, an inner rubber coating and an outer rubber coating, the skeleton comprising a central axis, a first end and a second end, the winding being cooperatively arranged on the central axis, and the end face of one end of the winding being abutted against the first end, and the end face of the other end being abutted against the second end, the inner rubber coating wraps the skeleton and the winding, a magnetic conductive frame is cooperatively arranged on the outer side of the inner rubber coating, and the outer rubber coating wraps the magnetic conductive frame and the inner rubber coating; and the manufacturing process of the integrated joint coil comprises the following steps: step 1, installing the winding; step 2, first plastic coating; step 3, installing the magnetic conductive frame; step 4, second plastic coating; compared with the prior art, the present invention forms an inner rubber coating and an outer rubber coating by combining the first plastic coating and the second plastic coating, and the outer rubber coating and the inner rubber coating are bonded to form a first protective seal and a second protective seal to prevent water from entering the winding and improve the overall sealing.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic coils, and in particular to an integrated connector coil and a manufacturing process thereof. Background Art

[0002] Existing joint coils often separate the coil box and the joint, which affects the sealing effect of the product. In addition, the materials used for the bracket, frame and rubber coating in the joint coil are different. When the plastic coating is carried out, the various components cannot be completely integrated, which also affects the sealing of the product. In general, the general coil is often plastic coated once. During the use process, the sealing between the rubber coating and the coil and the frame will be affected, thereby affecting the overall service life. Summary of the invention

[0003] In view of the shortcomings and defects of the prior art, an integrated joint coil and a manufacturing process thereof are provided. To further improve the sealing performance of the coil, the present invention provides the following technical solutions.

[0004] The present invention provides an integrated joint coil, comprising a skeleton, a winding, an inner rubber package and an outer rubber package, the skeleton comprising a central axis, a first end and a second end, the winding is cooperatively arranged on the central axis, and the end face of one end of the winding is abutted against the first end, and the end face of the other end is abutted against the second end, the inner rubber package wraps the skeleton and the winding, a magnetic conductive frame is cooperatively arranged on the outside of the inner rubber package, and the outer rubber package wraps the magnetic conductive frame and the inner rubber package.

[0005] Compared with the prior art, the present invention arranges inner rubber on the outside of the frame and the winding, and the inner rubber cooperates with the first end and the second end on the frame. During the first plastic wrapping, the frame and the winding can be better fitted with the inner rubber, forming a first seal to prevent water from entering the winding, and a second plastic wrapping is performed on the inner rubber and the outside of the magnetic conductive frame to form an outer rubber, and the outer rubber is fitted with the inner rubber to achieve adhesion to form a second protective seal, thereby further improving the overall sealing.

[0006] Furthermore, an upper needle protection structure is provided on the first end portion, and a lower needle protection structure is provided on the second end portion, and the cross-sectional shapes of the upper needle protection structure and the lower needle protection structure are both conical, and the outer diameter of the side of the upper needle protection structure away from the middle axis portion is larger than the outer diameter of the side close to the middle axis portion, and the outer diameter of the side of the lower needle protection structure away from the middle axis portion is larger than the outer diameter of the side close to the middle axis portion.

[0007] Through the above improvements, an upper needle protection structure is provided on the first end, and a lower needle protection structure is provided on the second end. The outer diameter of the side of the upper needle protection structure away from the middle axis portion is larger than the outer diameter of the side close to the middle axis portion, and the outer diameter of the side of the lower needle protection structure away from the middle axis portion is larger than the outer diameter of the side close to the middle axis portion, so that obvious upper and lower faults appear in the upper needle protection structure and the lower needle protection structure, and the thickness of the shear glue position at the fault can be made thin, and after being outwrapped in plastic, it can be better combined with the same material in a hot material state.

[0008] Furthermore, fine needles are provided on the surface of the upper anti-needle structure on the side away from the winding, and on the surface of the lower anti-needle structure on the side away from the winding, and the height of the fine needles is 50 um.

[0009] Through the above improvements, fine needles are arranged on the surface of the upper anti-needle structure and the surface of the lower anti-needle structure. The fine needles can better combine the skeleton with the inner plastic package, improve the plastic package effect and fusion, and achieve a sealing effect.

[0010] Furthermore, the inner rubber package includes a pin portion, a wiring cavity is provided in the outer rubber package, the pin portion is provided corresponding to the wiring cavity, a bump is protruded from the upper end of the pin portion toward the outer rubber package, and the cross-section of the bump is conical.

[0011] Through the above improvements, a bump protrudes from the upper end of the pin toward the outer rubber package, and the cross-section of the bump is conical. When the inner rubber package and the outer rubber package are plastic-wrapped for the second time, the bump can be melted by high temperature, and can fit more tightly when the inner rubber package and the outer rubber package are combined.

[0012] Furthermore, a plurality of thin protective pins are arranged on the outer surface of the pin portion abutting against the wiring cavity, and the thin protective pins are matched with the inner surface of the outer rubber package, and the height of the thin protective pins is 80 um.

[0013] Through the above improvements, a number of fine anti-pins are arranged on the outer surface where the pin part and the wiring cavity abut each other. The fine anti-pins are used to fuse with the tips of the outer rubber to complete the second plastic wrapping operation. After the combination, the second plastic wrapping can further ensure that water flow is blocked, and the fine anti-pins can make the combination of the inner rubber wrap and the outer rubber wrap more firmly, preventing the wiring cavity from being separated from the inner rubber wrapping during use.

[0014] Furthermore, the skeleton also includes a connecting section, which is arranged between the first end and the winding, and the connecting section is integrated with the first end and abuts against the end surface of the winding. A pin is arranged at one end of the connecting section away from the coil, and the pin is arranged in an L shape, and the tip of the pin is arranged in the wiring cavity.

[0015] Through the above improvements, the connecting section of the skeleton is arranged between the first end and the coil, the connecting section and the first end are integrated and abut against the end face of the winding, thereby improving the firmness of the overall connection; at the same time, an L-shaped pin is provided at one end of the connecting section, which is convenient for people's daily use.

[0016] Furthermore, the magnetic conductive frame includes a first connecting part, a second connecting part and a supporting part, the first connecting part and the second connecting part are respectively arranged at two ends of the supporting part, the first connecting part is abutted against the end surface of one end of the inner rubber bag, and the second connecting part is abutted against the end surface of the other end of the inner rubber bag.

[0017] Through the above improvements, the first connecting part and the second connecting part of the magnetic conductive frame are arranged at the two ends of the inner rubber package, which can fully play the role of magnetic conductivity.

[0018] Furthermore, a mounting hole is provided on the outer surface of the inner rubber bag, and a mounting column is provided on the surface of the first connecting part close to the inner rubber bag, and the mounting column is plug-fitted with the mounting hole. At the same time, a limiting block is provided on the inner rubber bag, and a limiting groove is provided on the side of the first connecting part away from the supporting part, and the limiting block is provided in cooperation with the limiting groove.

[0019] Through the above improvements, the mounting holes arranged on the outer surface of the inner rubber bag are plugged into and matched with the mounting posts arranged on the first connecting part, and at the same time, the limiting grooves on the first connecting part are matched with the limiting blocks arranged on the inner rubber bag, so that the magnetic conductive frame can be installed stably.

[0020] Furthermore, the present invention provides a manufacturing process of an integrated connector coil, and the manufacturing process specifically includes the following steps:

[0021] Step 1: Install the winding: Install the winding on the middle axis of the frame;

[0022] Step 2, first plastic encapsulation: the hot material is combined with the upper needle protection structure on the first end and the lower needle protection structure on the second end to form an inner plastic encapsulation by sealing the outer side of the frame and the winding;

[0023] Step 3: Install the magnetic frame: Connect the magnetic frame to the outer surface of the inner rubber bag by fitting and fixing;

[0024] Step 4, second plastic coating: The second plastic coating operation is performed through high temperature and fine needle tip to form an outer plastic coating on the outside of the inner plastic coating, and the inner plastic coating and the outer plastic coating are bonded.

[0025] Compared with the prior art, the skeleton and the winding are first sealed with hot material and the thin part of the needle tip by inner rubber coating, and the first plastic coating is performed to improve the sealing and prevent water from entering the winding; the outer surface of the inner rubber-coated pin part is heightened and thinned around the pin tip, which is used for the second plastic coating to fuse the tip tip, further improving the protective seal and preventing water from entering from the pin tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a top view structural diagram of an integrated connector coil;

[0027] Figure 2 It is a cross-sectional structural diagram of an integrated joint coil at AA;

[0028] Figure 3 This is an enlarged view of the local structure at A of an integrated joint coil;

[0029] Figure 4 This is an enlarged view of the local structure at B of an integrated connector coil;

[0030] Figure 5 This is an enlarged view of the local structure at C of an integrated joint coil;

[0031] Figure 6 A three-dimensional structural diagram of an integrated connector coil (without the outer rubber);

[0032] Figure 7 A three-dimensional structural diagram of an integrated connector coil (excluding the outer and inner rubber covers);

[0033] Figure 8 The figure is a three-dimensional structural diagram of an integrated connector coil.

[0034] Among them, 1. Skeleton; 1.1. Central axis; 1.2. First end; 1.21. Upper anti-needle structure; 1.3. Second end; 1.31. Lower anti-needle structure; 1.4. Fine pointed needle; 1.5. Connecting section; 1.6. Insert pin; 2. Winding; 3. Inner rubber package; 3.1. Insert pin; 3.2. Bump; 3.3. Fine anti-needle; 3.4. Mounting hole; 3.5. Limit block; 4. Outer rubber package; 4.1. Wiring cavity; 5. Magnetic guide frame; 5.1. First connecting part; 5.11. Mounting column; 5.12. Limit groove; 5.2. Second connecting part; 5.3. Support part. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] like Figures 1 to 8 An integrated joint coil shown includes a skeleton 1, a winding 2, an inner rubber package 3 and an outer rubber package 4. The skeleton 1 includes a central axis portion 1.1, a first end portion 1.2 and a second end portion 1.3. The winding 2 is cooperatively arranged on the central axis portion 1.1, and the end face of one end of the winding 2 is abutted against the first end portion 1.2, and the end face of the other end is abutted against the second end portion 1.3. The inner rubber package 3 wraps the skeleton 1 and the winding 2. A magnetic conductive frame 5 is cooperatively arranged on the outside of the inner rubber package 3. The outer rubber package 4 wraps the magnetic conductive frame 5 and the inner rubber package 3.

[0038] The skeleton 1 comprises a central axis portion 1.1, a first end portion 1.2 and a second end portion 1.3, the first end portion 1.2 and the second end portion 1.3 are respectively arranged at two ends of the central axis portion 1.1, an upper needle protection structure 1.21 is arranged on the first end portion 1.2, and the cross-sectional shape of the upper needle protection structure 1.21 is conical. In the upper needle protection structure 1.21, the outer diameter of the side away from the central axis portion 1.1 is larger than the outer diameter of the side close to the central axis portion 1.1, and a lower needle protection structure 1.31 is arranged on the second end portion 1.3. In the lower needle protection structure 1.31, the outer diameter of the side away from the central axis portion 1.1 is larger than the outer diameter of the side close to the central axis portion 1.1, so that obvious parting lines appear on the upper needle protection structure 1.21 and the lower needle protection structure 1.31, and the parting lines can make the thickness of the shear glue position at the fault of the upper needle protection structure 1.21 and the lower needle protection structure 1.31 thin, so that after being coated with plastic, in the hot material state, under the same material, it can be better combined with it.

[0039] The upper anti-needle structure 1.21 is provided with a fine needle 1.4 on the surface away from the winding 2. At the same time, the lower anti-needle structure 1.31 is also provided with a fine needle 1.4 on the surface away from the winding 2. The height of the fine needle 1.4 is 50um. The fine needle 1.4 is used for the first plastic packaging, which improves the fusion between materials and facilitates the bonding of the inner plastic packaging 3 and the frame 1, thereby achieving a sealing effect.

[0040] The skeleton 1 also includes a connecting section 1.5. The central axis 1.1, the first end 1.2, the second end 1.3 and the connecting section 1.5 are all integrated to improve the overall connection strength of the skeleton 1. One end of the connecting section 1.5 is abutted against the end face of the winding 2. An L-shaped pin 1.6 is provided at one end of the connecting section 1.5 and the winding 2. The tip of the L-shaped pin 1.6 is provided in the wiring cavity 4.1 of the outer rubber package 4.

[0041] The inner rubber package 3 includes a pin portion 3.1, and a wiring cavity 4.1 is arranged in the outer rubber package 4. The pin portion 3.1 is arranged corresponding to the wiring cavity 4.1. A convex block 3.2 protrudes from the upper end of the pin portion 3.1 toward the outer rubber package 4. The cross-section of the convex block 3.2 is conical. When the inner rubber package 3 and the outer rubber package 4 are plastic-wrapped for the second time, the convex block 3.2 can facilitate the second plastic-wrapping combination of the inner rubber package 3 and the outer rubber package 4.

[0042] A plurality of fine protection pins 3.3 are arranged on the outer surface where the pin portion 3.1 abuts against the wiring cavity 4.1. The fine protection pins 3.3 are matched with the inner surface of the outer rubber package 4. The height of the fine protection pins 3.3 is 80um. The fine protection pins 3.3 are used to integrate with the outer rubber package 4 at the tip to complete the second plastic packaging operation. After integration, the second plastic packaging can further ensure that water flow is blocked.

[0043] A magnetic conductive frame 5 is arranged on the outer side of the inner rubber bag 3, and the magnetic conductive frame 5 includes a first connecting part 5.1, a second connecting part 5.2 and a supporting part 5.3. The first connecting part 5.1 and the second connecting part 5.2 are respectively arranged at the two ends of the supporting part 5.3 in the same direction, and the first connecting part 5.1 and the second connecting part 5.2 are against the two end surfaces of the inner rubber bag 3; and a mounting column 5.11 is arranged on the surface of the first connecting part 5.1 close to the inner rubber bag 3, and a mounting hole 3.4 is arranged on the outer surface of the inner rubber bag 3, and the mounting column 5.11 is plug-matched with the mounting hole 3.4. At the same time, a limiting block 3.5 is also arranged on the inner rubber bag 3, and a limiting groove 5.12 is arranged on the side of the first connecting part 5.1 away from the supporting part 5.3, and the limiting block 3.5 is matched with the limiting groove 5.12, so that the magnetic conductive frame 5 can be stably installed on the outer side of the inner rubber bag 3.

[0044] At the same time, a manufacturing process of an integrated connector coil is also provided, and the manufacturing process specifically comprises the following steps:

[0045] Step 1, installing winding 2: installing winding 2 at the middle axis portion 1.1 of the frame 1;

[0046] Step 2, first plastic encapsulation: the hot material is plastic encapsulated with the upper needle protection structure 1.21 on the first end 1.2 and the lower needle protection structure 1.31 on the second end 1.3 to form an inner plastic encapsulation 3 on the outside of the frame 1 and the winding 2;

[0047] Step 3, installing the magnetic conductive frame 5: the magnetic conductive frame 5 is connected to the outer surface of the inner rubber bag 3 by fitting and fixing;

[0048] Step 4, second plastic encapsulation: a second plastic encapsulation operation is performed on the tip of the fine anti-pin 3.3 at high temperature to form an outer plastic encapsulation 4 on the outside of the inner plastic encapsulation 3, and the inner plastic encapsulation 3 and the outer plastic encapsulation 4 are bonded together.

[0049] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An integrated connector coil, characterized in that: The invention comprises a frame (1), a winding (2), an inner rubber coating (3) and an outer rubber coating (4); the frame (1) comprises a middle axis portion (1.1), a first end portion (1.2) and a second end portion (1.3); the winding (2) is arranged on the middle axis portion (1.1), and an end surface of one end of the winding (2) abuts against the first end portion (1.2), and an end surface of the other end abuts against the second end portion (1.3); an upper needle protection structure (1.21) is arranged on the first end portion (1.2), and an upper needle protection structure (1.21) is arranged on the second end portion (1.3); A lower needle protection structure (1.31) is provided, and the cross-sectional shapes of the upper needle protection structure (1.21) and the lower needle protection structure (1.31) are both conical, and the outer diameter of the side of the upper needle protection structure (1.21) away from the middle axis (1.1) is larger than the outer diameter of the side close to the middle axis (1.1), and the outer diameter of the side of the lower needle protection structure (1.31) away from the middle axis (1.1) is larger than the outer diameter of the side close to the middle axis (1.1), and the upper needle protection structure (1.21) is The lower needle protection structure (1.31) has obvious upper and lower faults, the upper needle protection structure (1.21) is provided with a fine needle (1.4) on the surface of the side away from the winding (2), and the lower needle protection structure (1.31) is provided with a fine needle (1.4) on the surface of the side away from the winding (2), the inner rubber package (3) wraps the frame (1) and the winding (2), the outer side of the inner rubber package (3) is provided with a magnetic conductive frame (5), the outer rubber package (4) wraps the magnetic conductive frame (5) and the inner rubber package (3), and the inner rubber package (3) is provided with a magnetic conductive frame (5). The rubber (3) comprises a pin portion (3.1), a wiring cavity (4.1) is arranged inside the outer rubber package (4), the pin portion (3.1) is arranged corresponding to the wiring cavity (4.1), a convex block (3.2) is protruded from the upper end of the pin portion (3.1) toward the outer rubber package (4), and the cross section of the convex block (3.2) is conical, and a plurality of fine anti-pins (3.3) are arranged on the outer surface of the pin portion (3.1) abutting against the wiring cavity (4.1), and the fine anti-pins (3.3) are arranged in coordination with the inner surface of the outer rubber package (4).

2. The integrated connector coil according to claim 1, characterized in that: The height of the fine-pointed needle (1.4) is 50 um.

3. The integrated connector coil according to claim 1, characterized in that: The height of the thin anti-pin (3.3) is 80 um.

4. The integrated connector coil according to claim 1, characterized in that: The skeleton (1) further comprises a connecting section (1.5), the connecting section (1.5) being arranged between the first end (1.2) and the winding (2), the connecting section (1.5) being arranged integrally with the first end (1.2) and abutting against the end surface of the winding (2), a plug pin (1.6) being arranged at one end of the connecting section (1.5) away from the coil, the plug pin (1.6) being arranged in an L shape, and the tip of the plug pin (1.6) being arranged in the wiring cavity (4.1).

5. The integrated connector coil according to claim 1, characterized in that: The magnetic conductive frame (5) comprises a first connecting portion (5.1), a second connecting portion (5.2) and a supporting portion (5.3); the first connecting portion (5.1) and the second connecting portion (5.2) are respectively arranged at two ends of the supporting portion (5.3); the first connecting portion (5.1) abuts against an end surface of one end of the inner rubber package (3); and the second connecting portion (5.2) abuts against an end surface of the other end of the inner rubber package (3).

6. The integrated connector coil according to claim 5, characterized in that: A mounting hole (3.4) is provided on the outer surface of the inner rubber bag (3); a mounting column (5.11) is provided on the surface of the first connecting portion (5.1) on the side close to the inner rubber bag (3); the mounting column (5.11) is plug-fitted with the mounting hole (3.4); a limiting block (3.5) is provided on the inner rubber bag (3); a limiting groove (5.12) is provided on the side of the first connecting portion (5.1) away from the supporting portion (5.3); the limiting block (3.5) is fitted with the limiting groove (5.12).

7. A manufacturing process for an integrated connector coil, used for manufacturing the integrated connector coil according to any one of claims 1 to 6, characterized in that: The manufacturing process specifically includes the following steps: Step 1, installing the winding (2): installing the winding (2) at the middle axis (1.1) of the frame (1); Step 2, first plastic encapsulation: the hot material is combined with the upper needle protection structure (1.21) on the first end (1.2) and the lower needle protection structure (1.31) on the second end (1.3) to form an inner plastic encapsulation (3) on the outer side of the frame (1) and the winding (2); Step 3, installing the magnetic conductive frame (5): the magnetic conductive frame (5) is connected to the outer surface of the inner rubber bag (3) by fitting and fixing; Step 4, second plastic encapsulation: a second plastic encapsulation operation is performed on the tip of the fine anti-pin (3.3) at high temperature to form an outer plastic encapsulation (4) on the outer side of the inner plastic encapsulation (3), and the inner plastic encapsulation (3) and the outer plastic encapsulation (4) are bonded together.

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