Axe-type pin copper wire connection structure and its transformer, inductor and choke

Abstract

The invention discloses an axe-shaped pin copper wire connection structure and its transformer, inductor and choke, which are used for connecting pins and wound copper wires, and include a columnar pin body; a winding position on the upper part of the pin body is provided with an inverted axe opening in the shape of a "7"; the axe opening is composed of a limiting table for positioning and breaking when winding the copper wire and a winding column for winding the copper wire; the limiting table is arranged transversely relative to the pin body; the winding column is bent at a certain angle from the top to a position close to the side of the limiting table to form an angled opening which is limited and fixed on the upper side of a copper wire coil starting from the limiting table and annularly wound on the winding column; the copper wire can be positioned, fixed and broken at the same position, and the subsequent setting of the welding position and the detection position is convenient, thereby greatly saving manpower and improving work efficiency.

Description

[Technical field]

[0001] The invention relates to a pin connection technology, and more particularly to an axe-shaped pin copper wire connection structure and a transformer, an inductor and a choke coil thereof. [Background technology]

[0002] In the prior art, pins used in transformers, inductors, chokes or other electronic components, such as Figure 1 As shown in the figure, the structure adopted is generally to symmetrically set arc-shaped notches 2' on both sides of the square columnar pin 1' to fix the winding and prevent the winding from slipping off. However, since the pin itself is small and the needle body is narrow, the arc-shaped notches 2' are symmetrically set on both sides, making the notches on both sides of the pin too small and cannot be opened too large; therefore, Figures 2 to 4 As shown, when pin 1' is applied to different transformers, the winding limit notch on the existing pin cannot play the winding limit function at all. Generally, the winding 3' is far beyond the notch 2' on both sides, resulting in the winding of pin 1' often slipping or uncertain positioning due to lack of limit. In addition, since the existing pin 1' adopts horizontal winding, the winding position may slide up and down. During the tinning process, the tail of the winding 3' may slide and cause cold soldering or false soldering, which is inconvenient for subsequent welding and testing, reduces the qualified rate of the product, and is not conducive to the rapid mass production of the product. For example, since the tail of the winding of pin 1' is uncertain due to lack of limit, the height of the solder joint is inconsistent. When checking the solder joint position, Figure 5 As shown, the positions of the welding points can only be detected manually one by one through a magnifying glass 4', which has low detection efficiency and poor detection effect.

[0003] At the same time, since the existing pin winding method is horizontal winding, the winding needs to rotate 360 ​​degrees for one circle. Due to the obstruction of the adjacent left and right pins, the winding speed is slow and the production efficiency cannot be improved. Figure 2 As shown, when the winding 3' is at the bottom of the pin 1' and close to the wire package 5', the coil is very likely to be burned during the tinning process, resulting in a withstand voltage problem. [Summary of the invention]

[0004] In order to solve the above technical difficulties, the present invention provides an axe-shaped pin copper wire connection structure and its transformer, inductor and choke which have a simple structure, are easy to wind, and are convenient for positioning, fixing and breaking the connected copper wires at the same position, and are convenient for subsequent setting of welding positions and detection positions, thereby saving a lot of manpower and improving work efficiency.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] The axe-shaped pin copper wire connection structure is used for connecting the pin and the winding copper wire, and includes a columnar pin body;

[0007] The winding part on the upper part of the needle body is provided with an inverted axe opening in the shape of a "7";

[0008] The axe opening is composed of a limiting table for positioning and breaking the copper wire when winding it and a winding column for winding the copper wire;

[0009] The limiting table surface is arranged horizontally or horizontally inclined relative to the needle body;

[0010] Furthermore, the winding column is bent at a certain angle from the top to a position close to the side of the limiting table surface, forming an angled opening which is limited and fixed on the upper side of the copper wire coil starting from the limiting table surface and annularly wound on the winding column;

[0011] Furthermore, the axe opening is opened on a single side wall of the winding part of the upper part of the pin;

[0012] Furthermore, the winding column is an axe-blade plate structure that is larger at the top and smaller at the bottom and is arranged obliquely outward.

[0013] Furthermore, the needle foot body is a rectangular plate-shaped body.

[0014] Furthermore, the limiting table surface is arranged horizontally relative to the needle leg body.

[0015] Furthermore, the limiting table surface is arranged to be inclined upward from the inside to the outside relative to the needle leg body.

[0016] Furthermore, the corner connection between the limiting table and the winding column forms an arc corner for positioning or\and breaking the wound copper wire.

[0017] Furthermore, the distance from the arc corner to the outer edge of the axe opening accounts for 1 / 3 to 1 / 2 of the entire width of the needle body.

[0018] Furthermore, the angle of the angled opening ranges from 15° to 90°.

[0019] A transformer comprises pins, wherein the pins adopt the above-mentioned axe-shaped pin copper wire connection structure.

[0020] An inductor comprises pins, wherein the pins adopt the above-mentioned axe-shaped pin copper wire connection structure.

[0021] A choke coil comprises pins, wherein the pins adopt the above-mentioned axe-shaped pin copper wire connection structure.

[0022] The beneficial effects of the present invention are:

[0023] The pin body of the present invention adopts a single-sided "7"-shaped inverted and oblique axe opening, which is suitable for electronic components such as transformers, inductors and chokes that require pin wiring. When the pin body adopts an axe-shaped straight pin design, the limiting gap on one side of the pin body can be maximized. After the limiting table here is enlarged, the winding can be completely limited to the position of the limiting table, and the corresponding winding column here is an axe plate structure that is larger at the top and smaller at the bottom and is obliquely arranged outward, thereby forming a limiting structure with a limiting table at the lower end, which is easy to wire and control the winding position to be fixed at the limiting table.

[0024] When the needle foot body adopts the axe-shaped bent needle foot design, the needle foot body is further bent to prevent the winding coil wrapped here from falling off upwards, thereby forming a limited table limit at the lower end, and a large limited angle formed by bending the axe plate structure with a larger upper part and a smaller lower part at the upper end, so that the winding is quick and convenient, and the winding positioning is accurate and firm; it is convenient for quick winding, convenient for positioning, fixing and breaking the connecting copper wire at the same position, and convenient for the subsequent setting of automatic welding position and automatic detection position, which saves a lot of manpower and improves work efficiency.

[0025] When in use, you only need to insert the copper wire into the limit table and corner position of the needle body, wind it one or two turns in a clockwise direction, and then directly pull the copper wire off at the knife edge of the limit table, which can save a lot of labor costs for winding the wire and achieve fast winding.

[0026] Moreover, compared with the existing pin design, the solder joint position cannot be fixed, some are high and some are low, and the solder joint is located below the pin, so it is impossible to realize automatic machine inspection of the solder joint, and it can only rely on manual microscopic inspection, which has the problems of high cost and high error rate. In the present invention, multiple pin bodies are wound to form a pin row, and all connected copper wires are at the same fixed position of the pin row, which is convenient for setting the position of the tinning machine to perform automatic tinning welding at the same position, effectively preventing poor contact of welding, solving the problem of cold soldering, and improving the reliability of product welding quality; in addition, the solder joints after welding are unified at the same position on the top of the pin row, which is convenient for checking the solder joints, and an automatic solder joint inspection machine can be effectively used to check each solder joint, achieving 100% reliable detection of solder joints.

Brief Description of the Drawings

[0027] Figure 1 It is an enlarged schematic diagram of the three-dimensional structure of the pin in the prior art;

[0028] Figure 2 It is a schematic diagram of a three-dimensional structure of pins applied to a transformer in the prior art;

[0029] Figure 3 It is a schematic diagram of the side view structure of the pins used in the transformer in the prior art;

[0030] Figure 4It is a schematic diagram of the winding process of the pin in the prior art;

[0031] Figure 5 It is a schematic diagram of manual inspection of pins using a magnifying glass in the prior art;

[0032] Figure 6 It is an enlarged structural schematic diagram of the pin bending process in the first embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of a three-dimensional structure of an embodiment of the present invention applied to a transformer;

[0034] Figure 8 It is a schematic cross-sectional structure diagram of an embodiment of the present invention applied to a transformer;

[0035] Fig. 9 This is a schematic diagram of a winding process applied to a transformer in accordance with an embodiment of the present invention;

[0036] Fig.10 This is a schematic diagram of a three-dimensional structure of a transformer according to a second embodiment of the present invention;

[0037] Fig.11 is a schematic cross-sectional view of a transformer according to a second embodiment of the present invention;

[0038] Fig.12 1 is a schematic diagram of the structure after winding in a transformer from a side view according to the second embodiment of the present invention;

[0039] Fig.13 Schematic diagram of winding process of transformer applied in Embodiment 2 of the present invention;

[0040] Fig.14 It is a schematic diagram of the detection structure of the second embodiment of the present invention using an automatic solder joint detection machine;

[0041] Fig.15 It is an enlarged schematic diagram of the three-dimensional structure of the straight pin structure in the third embodiment of the present invention;

[0042] Fig.16 Schematic diagram of the three-dimensional structure of the present invention applied to the coil transformer;

[0043] Fig.17 It is a three-dimensional structural schematic diagram of the third embodiment of the present invention applied to a skeleton colloid transformer. [Specific implementation method]

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1

[0046] Axe-shaped pin copper wire connection structure, such as Figures 6 to 8 As shown, it is used for connecting pins and wound copper wires and can be applied to transformers, including a columnar pin body 1. In this example, the pin body 1 adopts an axe-shaped curved pin design. The pin body 1 is a rectangular plate-like body with a width of 0.5-0.6 mm, and preferably a plate-like body with a width of 0.56 mm or 0.6 mm is adopted; an axe opening 2 in the shape of an inverted "7" is opened on one side of the winding part of the upper part of the pin body 1, that is, the axe opening 2 is opened on one side of the side wall of the winding part of the upper part of the pin.

[0047] Continue as Figures 6 to 9 As shown, the axe knife opening 2 is composed of a limiting table 20 for positioning and breaking when winding the copper wire and a winding post 21 for winding the copper wire. The winding post 21 is an axe knife plate structure that is larger at the top and smaller at the bottom and is obliquely arranged outward, and the corner connection between the limiting table 20 and the winding post 21 forms an arc corner 22 for positioning the wound copper wire. The distance from the arc corner 22 to the outer edge of the axe knife opening 2 accounts for 1 / 3 to 1 / 2 of the width of the entire needle shoe body; wherein, the limiting table 20 is horizontally arranged relative to the needle shoe body 1, and the winding post 21 is bent at a certain angle from the top to the position close to the side of the limiting table 20, forming an angled opening that is limited and fixed on the upper side of the copper wire coil starting from the limiting table 20 and annularly wound on the winding post 21. The angle α of the angled opening in this embodiment is 60°.

[0048] The axe opening 2 can maximize the limit gap on one side of the needle body 1. After the limit table 20 here is enlarged, the winding can be completely limited to the position of the limit table 20. The winding column 21 is an axe plate structure with a larger upper part and a smaller lower part. After bending, the winding coil wound here cannot fall off upward, thereby forming a lower end limit table 20 for limiting the position, and the angle mouth limits the upper end of the winding coil, making the pin winding quick and convenient, and the winding positioning accurate and firm; it is convenient for quick winding, convenient for connecting copper wires to be positioned, fixed and torn at the same position, and convenient for subsequent setting of automatic welding position and automatic detection position, which saves a lot of manpower and improves work efficiency.

[0049] Embodiment 2

[0050] like Figures 10 to 13As shown, the difference between this embodiment and the first embodiment is that the limiting table 20 is inclined upward from the inside to the outside in the transverse direction relative to the needle body 1, that is, the limiting table 20 is an inclined surface arranged obliquely, and after further cooperating with the arc corner 22, it is more effective to facilitate the positioning of the starting winding copper wire and the tearing off of the tail end of the copper wire after winding, thereby effectively improving the winding efficiency.

[0051] Compared with the existing old straight pins, it is very difficult to wind the wire on the pin body when using it, because the winding worker needs to clamp the copper wire first, pass through the narrow space between the adjacent left pin body and the right pin body, and turn 360 degrees to complete a circle of winding on the pin body. Because the left and right spaces of the pin body are limited, it is difficult to complete the winding work smoothly, and the winding time is long, and the work efficiency is not high. In the first and second embodiments, a pin body with a curved axe-shaped structure is used. The wiring worker only needs to clamp the copper wire and insert it into the limit table 20, and then pull the copper wire up immediately after slightly passing the pin bend position, and the winding is completed on the pin. It is not limited or hindered by the adjacent left and right pin body space. The winding work is very smooth and fast, which can effectively save the winding time and improve the winding efficiency.

[0052] At the same time, compared with the existing old straight needle winding, because there is no card position on the needle body to fix the winding position, the winding height is inconsistent, causing some wires to be wound around the root of the needle body close to the plastic shell colloid or the frame colloid. When the tinning welding wire is dipped, it may cause cold welding or false welding. If the tinning machine is adjusted to dip deeper, it will further damage the coil inside the product, causing more serious quality problems, such as short circuit, withstand voltage test and other serious quality problems; in Example 1 and Example 2, a needle body with a curved axe-shaped structure is used. Since the winding has been stuck in the limit table 20 and the wound The coil is fixed on the top of the pin bending position. In this way, when tinning, the pin body does not need to be dipped too low. It only needs to control the position of the tinning machine to solder to the top of the pin body connection, away from the wire package or skeleton colloid and the inner coil of the product, which can effectively ensure the reliability of the solder joint and reduce the quality problems of cold soldering and false soldering. Moreover, the improved structure does not need to immerse the product pin body to the root position when tinning, which can avoid the wire package colloid or skeleton colloid from being burned. More importantly, it can avoid the short circuit or withstand voltage test problems caused by welding the inner coil of the product, which can effectively improve the reliability of the product.

[0053] In addition, since the winding position can be ensured, the corresponding soldering point position can be fixedly set on the top of the pin body, which can maintain a consistent soldering point position; therefore, Fig.14 As shown, the improved structure is suitable for using the automatic solder joint inspection machine 4 to realize fully automatic inspection of each solder joint of the product, and to perform rapid inspection or testing, saving time and effort, and improving product quality and reliability.

[0054] Embodiment 3

[0055] like Figures 15 to 17 As shown, in this embodiment, the pin body adopts an axe-shaped straight pin design, which is used for connecting the pin and the wound copper wire and can be applied to the transformer, including a columnar pin body 1, and the pin body 1 is a rectangular plate-like body with a width of 0.5-0.6 mm, preferably a plate-like body with a width of 0.56 mm or 0.6 mm; an axe opening 2 in the shape of an inverted "7" is opened on one side of the winding part of the pin body 1, that is, the axe opening 2 is opened on one side of the side wall of the winding part at the top of the pin.

[0056] Continue as Figures 15 to 17 As shown, the needle body with a straight axe-shaped needle design is used for Fig.16 The coil transformer shown in the figure, or applied to Fig.17 In the skeleton colloid transformer shown, the axe opening 2 is composed of a limiting table 20 for positioning and breaking when winding copper wire and a winding post 21 for winding copper wire. The winding post 21 is an axe plate structure that is larger at the top and smaller at the bottom and is arranged obliquely outward. The corner connection between the limiting table 20 and the winding post 21 forms an arc corner 22 for positioning the winding copper wire. The distance from the arc corner 22 to the outer edge of the axe opening 2 accounts for 1 / 3 to 1 / 2 of the width of the entire needle foot body; wherein the limiting table 20 is arranged horizontally relative to the needle foot body 1.

[0057] The pin body adopts an axe-shaped straight pin design. Compared with the disadvantage that the left and right arc-shaped notches at the top of the pin in the prior art are too small to prevent the winding from slipping out, in this embodiment, it is easy to connect the wires and control the winding position to be fixed at the limit table 20 of the pin body 1, so that the winding can be accurately positioned at the pin and prevent the winding from slipping down at the pin body 1; during processing, the wiring staff only needs to clamp the copper wire and insert it into the limit table 20 to wind the wire on the winding column 21. Because the axe opening 2 is larger, the wiring staff can easily insert the wire into the axe opening 2 for winding, the winding is faster and the wound coil can be uniformly positioned at the limit table 20, and the winding position is consistent. In this way, when tinning, the pin body does not need to be dipped too low, and it is only necessary to control the tinning machine to solder to the top of the pin connection, so as to be away from the wire package or the skeleton colloid and the inner coil of the product; it is effectively avoided that the short circuit or voltage withstand test caused by welding the inner coil of the product will cause quality problems, thereby improving the reliability of the product. Similarly, since the wire winding position can be ensured, the corresponding solder joint position can be fixedly set on the top of the pin body. Therefore, it is suitable to use an automatic solder joint detection machine to realize fully automatic detection of each solder joint of the product, and perform rapid inspection or testing, saving time and effort.

[0058] In the description of the present invention, it should be noted that the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0059] The above-described embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes made based on the shape, structure and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Axe-shaped pin copper wire connection structure, used for connecting pins and winding copper wires, including a columnar pin body; characterized in that: The winding part on the upper part of the needle body is provided with an inverted axe opening in the shape of a "7"; The axe opening is composed of a limiting table for positioning and breaking the copper wire when winding it and a winding column for winding the copper wire; The limiting table surface is arranged horizontally or horizontally inclined relative to the needle body; The winding column is bent at a certain angle from the top to the position close to the side of the limiting table, forming an angled opening which is fixed and limited on the upper side of the copper wire coil which starts from the limiting table and is annularly wound on the winding column; The axe opening is opened on a single side wall of the winding part of the upper part of the pin; The winding column is an axe-blade plate structure that is larger at the top and smaller at the bottom and is arranged obliquely outward.

2. The axe-shaped pin copper wire connection structure according to claim 1, characterized in that: The needle foot body is a rectangular plate-shaped body.

3. The axe-shaped pin copper wire connection structure according to claim 1, characterized in that: The limiting table surface is arranged horizontally relative to the needle leg body.

4. The axe-shaped pin copper wire connection structure according to claim 1, characterized in that: The limiting table surface is arranged to be inclined upward from the inside to the outside relative to the needle leg body.

5. The axe-shaped pin copper wire connection structure according to claim 1, characterized in that: The corner connection between the limiting table and the winding column forms an arc corner for positioning or\and breaking the wound copper wire.

6. The axe-shaped pin copper wire connection structure according to claim 5, characterized in that: The distance from the arc corner to the outer edge of the axe opening accounts for 1 / 3 to 1 / 2 of the entire needle foot body width.

7. The axe-shaped pin copper wire connection structure according to claim 1, characterized in that: The angle range of the angled opening is 15° to 90°.

8. A transformer, comprising pins, characterized in that: The pin adopts the axe-shaped pin copper wire connection structure described in any one of claims 1 to 7.

9. An inductor comprising a pin, characterized in that: The pin adopts the axe-shaped pin copper wire connection structure described in any one of claims 1 to 7.

10. A choke comprising a pin, characterized in that The pin adopts the axe-shaped pin copper wire connection structure described in any one of claims 1 to 7.

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