Flexible winding needle structure

Abstract

The utility model provides a flexible wire winding needle structure which comprises a mounting part, an elastic connecting part and a wire winding part, the mounting part and the wire winding part are connected through the elastic connecting part, the wire winding part is provided with a limiting structure and a fixing groove, the limiting structure comprises a limiting groove, the limiting groove extends from the wire winding part to the mounting part, and the fixing groove communicates with the limiting groove. The extending direction of the fixing groove is different from that of the limiting groove, the limiting groove and the fixing groove are located on the side, away from the mounting part, of the wire winding part, the limiting groove is used for fixing the wire winding pin and the wire, and the fixing groove is used for fixing the wire, so that the risk that the wire is broken in the wire winding process is reduced.

Description

Technical Field

[0001] This application relates to the technical field of inductors, and particularly to a flexible wire-winding needle structure. Background Art

[0002] An inductor coil is a commonly used electrical component with a large demand. An inductor coil generally includes a magnetic core and a housing. Usually, 2 to 4 wire-winding pins are provided on the housing. Before wire-winding, the magnetic core is inserted into the housing. After winding the magnetic core with a wire, the wire on the magnetic core needs to be connected to the wire-winding pins on the housing. Currently, usually a wire-winding needle is used to grasp and fix the end of a fixed wire, and a wire-winding device automatically winds the wire. However, since the wire is soft and thin, if the existing wire-winding needle is used to wind the magnetic core, it is easy to cause the wire to break during the wire-winding process, thereby resulting in a poor yield of the inductor coil. Summary of the Utility Model

[0003] In view of this, this application provides a flexible wire-winding needle structure to reduce the risk of wire breakage during wire-winding.

[0004] This application provides a flexible wire-winding needle structure, including a mounting portion, an elastic connection portion, and a wire-winding portion. The mounting portion is connected to the wire-winding portion through the elastic connection portion. A limiting structure and a fixing groove are provided on the wire-winding portion. The limiting structure includes a limiting groove that extends from the wire-winding portion towards the mounting portion. The fixing groove communicates with the limiting groove, and the extending direction of the fixing groove is different from that of the limiting groove. The limiting groove and the fixing groove are located on the side of the wire-winding portion away from the mounting portion. The limiting groove is used to fix the wire-winding pin and the wire, and the fixing groove is used to fix the wire.

[0005] In some embodiments, a groove is provided on the outer surface of the mounting portion, and a card slot spaced from the limiting structure and the fixing groove is provided on the outer surface of the wire-winding portion. The elastic connection portion is disposed in the groove and the card slot.

[0006] In some embodiments, the surface of the elastic connection portion facing away from the bottom of the groove and the bottom of the card slot is not higher than the height of the groove and the height of the card slot.

[0007] In some embodiments, the limiting structure further includes a limiting hole penetrating the wire-winding portion. The limiting hole communicates with the limiting groove and extends from the wire-winding portion towards the mounting portion. The limiting hole is used to fix the wire-winding pin.

[0008] In some embodiments, the sum of the extending length of the limiting groove and the extending depth of the limiting hole is equal to the length of the wire-winding portion.

[0009] In some embodiments, an extension direction of the fixing groove is perpendicular to an extension direction of the limiting groove.

[0010] In some embodiments, the width of the slot opening of the fixing slot is greater than the width of the slot bottom of the fixing slot.

[0011] In some embodiments, the mounting portion has a through hole, the through hole extends from the wire winding portion toward the mounting portion, and the extension length of the through hole is the same as the length of the mounting portion.

[0012] In some embodiments, the length of the winding portion is greater than or equal to 2.5 mm.

[0013] In some embodiments, the mounting portion includes a mounting rod and a mounting cylinder, and an end of the mounting rod facing away from the wire winding portion is inserted into the mounting cylinder.

[0014] The present application provides a flexible wire winding needle structure, including a mounting portion, an elastic connecting portion and a wire winding portion, wherein the mounting portion and the wire winding portion are connected via the elastic connecting portion, and a limiting structure and a fixing groove are arranged on the wire winding portion, wherein the limiting structure includes a limiting groove, wherein the limiting groove extends from the wire winding portion toward the mounting portion, the fixing groove is connected to the limiting groove, and an extending direction of the fixing groove is different from an extending direction of the limiting groove, the limiting groove and the fixing groove are located on a side of the wire winding portion away from the mounting portion, the limiting groove is used to fix the wire winding pin and the wire, and the fixing groove is used to fix the wire, so as to reduce the risk of the wire breaking during the wire winding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the flexible thread winding needle structure provided by the present application from a first perspective;

[0017] Figure 2 is a schematic diagram of a second viewing angle of the three-dimensional structure of the flexible thread winding needle structure provided by the present application;

[0018] Figure 3 is a schematic diagram of the three-dimensional structure of the flexible thread winding needle structure provided by the present application from a third viewing angle;

[0019] Figure 4 It is a schematic diagram of a three-dimensional structure in which the flexible winding needle structure provided by the present application is installed on a module from a first perspective;

[0020] Figure 5It is a second perspective schematic diagram of the three-dimensional structure of the flexible wire-winding needle structure provided by this application when installed on a module.

[0021] Reference numerals:

[0022] 10. Flexible wire-winding needle structure; 20. Magnetic ring; 30. Housing; 40. Wire-winding pin; 50. Conducting wire; 60. Module; 100. Mounting part; 110. Groove; 120. Through hole; 130. Mounting rod; 140. Mounting cylinder; 200. Elastic connection part; 300. Wire-winding part; 310. Limiting groove; 320. Limiting hole; 330. Fixed groove; 340. Card slot. Specific embodiments

[0023] Next, in conjunction with the accompanying drawings, the technical solutions in the embodiments of this application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application. Without conflict, the following various embodiments and their technical features can be combined with each other.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of these features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of this application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. The terms "connected", "electrically connected", and "electrically connected" used herein include any direct and indirect electrical or structural connection means. Therefore, if it is described in the text that the first device is coupled / connected / electrically connected to the second device, it means that the first device can be directly electrically / structurally connected to the second device, or indirectly electrically / structurally connected to the second device through other devices or connection means.

[0026] The present application provides a flexible wire-winding needle structure, which includes an installation part, an elastic connection part, and a wire-winding part. The installation part and the wire-winding part are connected through the elastic connection part. A limiting structure and a fixing groove are provided on the wire-winding part. The limiting structure includes a limiting groove, which extends from the wire-winding part towards the installation part. The fixing groove communicates with the limiting groove, and the extending direction of the fixing groove is different from that of the limiting groove. The limiting groove and the fixing groove are located on the side of the wire-winding part away from the installation part. The limiting groove is used to fix the wire-winding pin and the wire, and the fixing groove is used to fix the wire.

[0027] In the present application, the installation part and the wire-winding part are connected by using an elastic connection part with elasticity, so that when the center circles of the installation part and the wire-winding part are eccentric, the elastic connection part can drive the wire-winding part to move in the opposite direction, increasing the gap between the center circle of the elastic connection part and the center circle of the installation part. The extrusion force on the wire becomes smaller, reducing the risk of wire breakage during the wire-winding process. That is, by ensuring that the wire-winding part and the installation part are concentric, it is ensured that the wire-winding part can move with the movement of the installation part, thereby ensuring stable wire-winding of the flexible wire-winding needle structure and not squeezing and breaking the wire, thus improving the yield rate of the inductor coil.

[0028] Please refer to Figures 1 - 5 , Figure 1 is the first perspective schematic diagram of the three-dimensional structure of the flexible wire-winding needle structure provided by the present application; Figure 2 is the second perspective schematic diagram of the three-dimensional structure of the flexible wire-winding needle structure provided by the present application; Figure 3 is the third perspective schematic diagram of the three-dimensional structure of the flexible wire-winding needle structure provided by the present application; Figure 4 is the first perspective schematic diagram of the three-dimensional structure of the flexible wire-winding needle structure installed on the module provided by the present application; Figure 5It is a second perspective schematic diagram of the three-dimensional structure of the flexible wire winding needle structure provided by this application when installed on the module. This application provides a flexible wire winding needle structure 10, which includes a mounting portion 100, an elastic connecting portion 200, and a wire winding portion 300. The mounting portion 100 and the wire winding portion 300 are connected through the elastic connecting portion 200. A limiting structure and a fixing groove 330 are provided on the wire winding portion 300. The limiting structure includes a limiting groove 310. The limiting groove 310 extends from the wire winding portion 300 towards the mounting portion 100. The fixing groove 330 communicates with the limiting groove 310, and the extending direction of the fixing groove 330 is different from that of the limiting groove 310. The limiting groove 310 and the fixing groove 330 are located on the side of the wire winding portion 300 away from the mounting portion 100. The limiting groove 310 is used to fix the wire winding pin 40 and the wire 50, and the fixing groove 330 is used to fix the wire 50. Specifically, the wire winding portion 300 has a limiting structure and a fixing groove 330. The limiting structure includes a limiting groove 310 and a limiting hole 320 penetrating the wire winding portion 300. Both the limiting groove 310 and the limiting hole 320 extend from the wire winding portion 300 towards the mounting portion 100, and the bottom of the limiting groove 310 communicates with the limiting hole 320. The limiting hole 320 is used to fix the wire winding pin 40, and the limiting groove 310 is used to fix the wire winding pin 40 and the wire 50. The wire 50 can be a copper wire 50 or other wires 50, which is not limited here; the fixing groove 330 communicates with the limiting groove 310, and the extending direction of the fixing groove 330 is different from that of the limiting groove 310; the elastic connecting portion 200 has elasticity. The elastic connecting portion 200 can be a spring steel sheet or others, which is not limited here. One end of the elastic connecting portion 200 is connected to the side of the wire winding portion 300 where the limiting structure and the fixing groove 330 are not provided, and the other end of the elastic connecting portion 200 is connected to the mounting portion 100. For example, when the elastic connecting portion 200 deforms by 0.5 mm, the output force is 0.5 N, which is less than 1 N. The force output by the elastic connecting portion 200 is less than the extrusion bearing force of the wire 50, that is, it can wind the wire stably without breaking the wire 50.

[0029] In this application, the mounting portion 100 and the wire winding portion 300 are connected through the elastic connecting portion 200 with elasticity. When the center circles of the mounting portion 100 and the wire winding portion 300 are eccentric, the elastic connecting portion 200 can drive the wire winding portion 300 to move in the opposite direction, increasing the gap between the center circle of the elastic connecting portion 200 and the center circle of the mounting portion 100. The extrusion force on the wire 50 becomes smaller, reducing the risk of wire breakage during the wire winding process. That is, by ensuring that the wire winding portion 300 and the mounting portion 100 are concentric, it is ensured that the wire winding portion 300 can move along with the movement of the mounting portion 100 and the module 60, thereby ensuring the stable wire winding of the flexible wire winding needle structure 10 without breaking the wire 50, and thus improving the yield of the inductor coil.

[0030] During the wire winding operation, the center circle of the winding needle usually needs to coincide with the center circle of the winding pin 40 to ensure that the gap between the two center circles is stable and the gap between the center circles is larger than the wire diameter of the wire 50, thereby avoiding the risk of the wire 50 being squeezed and broken during winding. However, due to the structural defects of the existing winding needles, the center circle of the winding needle does not coincide with the center circle of the winding pin 40, resulting in the gap between the two center circles being smaller than the wire diameter of the wire 50, causing the risk of the wire 50 being broken due to extrusion.

[0031] In this application, an elastic connecting part 200 with elasticity is used to connect between the installation part 100 and the winding part 300. When the center circles of the flexible winding needle structure 10 and the winding pin 40 are eccentric, the gap between the two center circles becomes smaller, and the wire 50 between the flexible winding needle structure 10 and the winding pin 40 is squeezed. At this time, the elastic connecting part 200 will move in the opposite direction with the winding part 300 due to its elasticity, increasing the gap between the center circle of the flexible winding needle structure 10 and the center circle of the winding pin 40, reducing the extrusion force on the wire 50, and reducing the risk of the wire 50 being broken during winding. That is, during the operation of the flexible winding needle structure 10, the center circle of the flexible winding needle structure 10 can coincide with the center circle of the winding pin 40, avoiding the reduction of the gap between the two center circles, and further reducing the risk of the wire 50 being squeezed when the wire 50 is wound around the magnetic ring 20, thereby reducing the risk of the wire 50 being broken during winding and improving the yield of the inductor coil.

[0032] In an embodiment, a groove 110 is provided on the outer surface of the installation part 100, and a card slot 340 spaced from the limiting structure and the fixing slot 330 is provided on the outer surface of the winding part 300. The elastic connecting part 200 is arranged in the groove 110 and the card slot 340. In this application, by providing the card slot 340 on the winding part 300 and the groove 110 on the installation part 100, the elastic connecting part 200 can be better connected to the installation part 100 and the winding part 300, improving the connection stability and thus the reliability of the flexible winding needle structure 10.

[0033] Further, the card slot 340 extends in the direction from the wire winding portion 300 towards the mounting portion 100. The extension length of the card slot 340 is the same as the length of the wire winding portion 300, or the extension length of the card slot 340 is less than the length of the wire winding portion 300. The groove 110 extends in the direction from the wire winding portion 300 towards the mounting portion 100. The extension length of the groove 110 is the same as the length of the mounting portion 100, or the extension length of the groove 110 is less than the length of the mounting portion 100. In this embodiment, the case where the extension length of the card slot 340 is the same as the length of the wire winding portion 300 and the extension length of the groove 110 is the same as the length of the mounting portion 100 is taken as an example for description. It should be noted that the length of the wire winding portion 300 and the length of the mounting portion 100 refer to the lengths of the wire winding portion 300 and the mounting portion 100 in the direction towards the mounting portion 100.

[0034] In one embodiment, the surface of the elastic connection portion 200 facing away from the bottom of the groove 110 and the bottom of the card slot 340 is not higher than the groove height of the groove 110 and the card slot 340, so as to protect the elastic connection portion 200 and thus improve the reliability of the flexible wire winding needle structure 10.

[0035] In one embodiment, the sum of the extension length of the limiting groove 310 and the extension depth of the limiting hole 320 is equal to the length of the wire winding portion 300, so that the limiting structure can better fix the wire winding pin 40, avoid the risk of the wire winding pin 40 falling off during the wire winding operation, and thus further improve the reliability of the flexible wire winding needle structure 10.

[0036] In one embodiment, the extending direction of the fixing groove 330 is perpendicular to the extending direction of the limiting groove 310, so that the fixing groove 330 can better fix the wire 50, avoid the risk of the wire 50 falling off during the wire winding operation, and thus further improve the reliability of the flexible wire winding needle structure 10.

[0037] In one embodiment, the width of the opening of the fixing groove 330 is greater than the width of the bottom of the fixing groove 330. Further, the groove wall of the fixing groove 330 away from the mounting portion 100 is not inclined, and the groove wall of the fixing groove 330 close to the mounting portion 100 is inclined and inclined towards the mounting portion 100. With this design of the fixing groove 330, the fixing groove 330 can better fix the wire 50, avoid the risk of the wire 50 falling off during the wire winding operation, and thus further improve the reliability of the flexible wire winding needle structure 10.

[0038] In one embodiment, the mounting portion 100 has a through hole 120. The through hole 120 extends in the direction from the wire winding portion 300 towards the mounting portion 100, and the extension length of the through hole 120 is the same as the length of the mounting portion 100.

[0039] In one embodiment, the length of the winding portion 300 is greater than or equal to 2.5 mm. Specifically, the length of the winding portion 300 may be 2.5 mm, 2.9 mm, 3.1 mm, 3.6 mm, 3.8 mm or 4.3 mm. It should be noted that when the flexible winding needle structure 10 is winding, there is a gap between the winding portion 300 and the housing 30, that is, the winding portion 300 does not contact the housing 30.

[0040] In one embodiment, the mounting portion 100 includes a mounting rod 130 and a mounting cylinder 140 , and one end of the mounting rod 130 away from the winding portion 300 is inserted into the mounting cylinder 140 to improve the connection stability between the mounting rod 130 and the mounting cylinder 140 .

[0041] The mounting tube 140 of the flexible wire winding needle structure 10 is installed on the module 60 of the wire winding equipment, and the module 60 has the functions of forward and backward movement and automatic rotation; before winding, the magnetic ring 20 is installed in the outer shell 30, and the wire 50 on the magnetic ring 20 is arranged and close to the wire winding pin 40, then the wire winding begins, and the flexible wire winding needle structure 10 moves forward to a position close to the wire 50 and starts to rotate, then the wire 50 is hooked into the wire winding part 300, and the flexible wire winding needle structure 10 continues to rotate, and the wire 50 is completely wound around the wire winding pin 40, completing the winding of the wire 50.

[0042] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structural or equivalent process transformations made using the contents of the specification and drawings of the present application, such as the mutual combination of technical features between the embodiments, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A flexible wire-winding needle structure, characterized in that, It includes a mounting portion, an elastic connecting portion and a wire winding portion, the mounting portion and the wire winding portion are connected by the elastic connecting portion, a limiting structure and a fixing groove are arranged on the wire winding portion, the limiting structure includes a limiting groove, the limiting groove extends from the wire winding portion toward the mounting portion, the fixing groove is connected to the limiting groove, and the extending direction of the fixing groove is different from the extending direction of the limiting groove, the fixing groove and the limiting groove are located on the side of the wire winding portion away from the mounting portion, the limiting groove is used to fix the wire winding pin and the wire, and the fixing groove is used to fix the wire.

2. The flexible wire-winding needle structure according to claim 1, characterized in that, The outer surface of the mounting portion is provided with a groove, the outer surface of the wire winding portion is provided with a clamping groove spaced apart from the limiting structure and the fixing groove, and the elastic connecting portion is arranged in the groove and the clamping groove.

3. The flexible wire-winding needle structure according to claim 2, wherein The surface of the elastic connecting portion which is away from the groove bottom of the groove and the groove bottom of the clamping groove is not higher than the groove height of the groove and the groove height of the clamping groove.

4. The flexible wire winding needle structure according to claim 1, wherein The limiting structure also includes a limiting hole that passes through the wire winding portion, the limiting hole is communicated with the limiting groove and extends from the wire winding portion toward the mounting portion, and the limiting hole is used to fix the wire winding pin.

5. The flexible wire-winding needle structure according to claim 4, characterized in that, The sum of the extension length of the limiting groove and the extension depth of the limiting hole is equal to the length of the wire winding portion.

6. The flexible wire winding needle structure according to claim 1, characterized in that, An extending direction of the fixing groove is perpendicular to an extending direction of the limiting groove.

7. The flexible wire winding needle structure according to claim 1, wherein, The width of the notch of the fixing groove is greater than the width of the groove bottom of the fixing groove.

8. The flexible wire winding needle structure according to claim 1, wherein The mounting portion has a through hole, and the through hole extends from the wire winding portion toward the mounting portion. The extending length of the through hole is the same as the length of the mounting portion.

9. The flexible wire-winding needle structure according to claim 1, wherein The length of the winding portion is greater than or equal to 2.5 mm.

10. The flexible wire-winding needle structure according to claim 1, wherein The mounting portion comprises a mounting rod and a mounting cylinder, and one end of the mounting rod away from the wire winding portion is inserted into the mounting cylinder.

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