2-pin magnetic connector

Abstract

The application relates to a 2Pin magnetic attraction connector, which comprises a male end and a female end, the male end comprises a spring needle and a conductive piece, the spring needle is coaxially arranged in the conductive piece, the conductive piece is provided with a spherical contact convex surface, and the contact end of the spring needle is exposed from the center of the spherical contact convex surface; the female end comprises a conductive needle, a conductive sleeve and a magnetic ring, the conductive needle and the magnetic ring are coaxially arranged in the conductive sleeve, the conductive sleeve is provided with a spherical contact concave surface, the contact end of the conductive needle is exposed from the center of the spherical contact concave surface, the contact end of the spring needle and the contact end of the conductive needle are respectively provided with a first contact arc surface and a second contact arc surface, and the spherical contact concave surface and the second contact arc surface are not continuously connected and have a height difference; when the male end and the female end are magnetically attracted and connected through the magnetic force between the magnetic ring and the conductive piece, the male end can rotate and swing relative to the female end with the spherical center of the spherical contact concave surface as the center. The application greatly expands the connecting and swinging angles of the male end and the female end, and has high connecting freedom.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a 2-pin magnetic connector with a wide mating angle. Background Technology

[0002] Magnetic connectors can automatically connect using magnetic force, making them increasingly widely used in various mobile devices such as electric bicycles, electric shopping carts, strollers, wheelchairs, and golf carts, as well as wearable devices such as smart glasses and smartwatches. However, existing magnetic connectors require a foolproof structure to ensure accurate magnetic connection, which means that magnetic connection can only be performed at specific angles, causing some inconvenience and preventing blind mating.

[0003] To achieve blind mating, magnetic connectors capable of 360° mating have emerged. Chinese invention patent application CN202022674363.7 discloses a novel 360° mating magnetic connector, including a male and a female end. Multiple alternating annular copper sleeves are arranged on the core of the female end, forming multiple electrodes with a magnet sleeved on the outside of the core. This ensures that after the male and female ends are magnetically engaged, the spring pin on the male end remains in contact with the electrodes on the female end throughout 360° rotation. However, the mating surface of this type of 360° mating magnetic connector is planar, making it easy to break the connection when the male end swings relative to the female end. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a 2-pin magnetic connector, in which the male and female ends achieve multi-angle rotation and swing through a hemispherical contact surface, providing a high degree of freedom in docking.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a 2-pin magnetic connector, comprising a male end and a female end. The male end includes a spring pin and a conductive element. The spring pin is coaxially disposed within the conductive element, and the conductive element has a spherical contact convex surface. The contact end of the spring pin protrudes from the center of the spherical contact convex surface. The female end includes a conductive pin, a conductive sleeve, and a magnetic ring. The conductive pin and the magnetic ring are coaxially disposed within the conductive sleeve. The conductive sleeve has a spherical contact concave surface, and the contact end of the conductive pin protrudes from the center of the spherical contact convex surface. The center of the concave surface is exposed. The contact end of the spring needle and the contact end of the conductive needle are respectively provided with a first contact arc surface and a second contact arc surface. There is no continuous transition between the spherical contact concave surface and the second contact arc surface and there is a height difference. When the male end and the female end are magnetically attracted to the conductive part of the iron alloy material through the magnetic ring, the spherical contact concave surface and the spherical contact convex surface are in contact and conduction, and the first contact arc surface and the second contact arc surface are in contact and conduction. The male end can rotate and swing relative to the female end with the center of the spherical contact concave surface as the center.

[0006] In the above technical solution, the male end includes an insulating sleeve, the spring needle passes through the central hole of the insulating sleeve, the insulating sleeve passes through the shaft hole of the conductive component, the end face of the insulating sleeve and the contact end of the spring needle protrude from the shaft hole of the conductive component, and the end face of the insulating sleeve smoothly transitions to the spherical contact convex surface.

[0007] In the above technical solution, the outer wall of the insulating sleeve is interference-fitted with the inner wall of the conductive component shaft hole, and the inner wall of the central hole of the insulating sleeve is interference-fitted with the outer wall of the spring needle tube.

[0008] In the above technical solution, the female end includes an insulating base, the conductive needle passes through the central hole of the insulating base, and the end of the conductive sleeve away from the spherical contact concave surface is provided with a fixing foot that is riveted and fixed to the insulating base.

[0009] In the above technical solution, the edge of the insulating base is provided with a locking position, and the fixing foot is bent and fixed in the locking position.

[0010] In the above technical solution, the insulating seat is provided with an insulating ring around the central hole. The insulating ring extends towards the spherical contact concave surface. The end face of the insulating ring is not higher than the spherical contact concave surface, and the second contact arc surface of the conductive needle is not higher than the end face of the insulating ring.

[0011] In the above technical solution, the portion of the inner wall of the insulating ring that protrudes above the second contact arc surface of the conductive needle forms a limiting retaining ring that restricts the movement range of the spring needle contact end, thereby limiting the angle of rotation and swing of the male end relative to the female end.

[0012] In the above technical solution, the magnetic ring is sleeved on the outer circumference of the insulating ring, and the magnetic ring is fixedly assembled between the conductive sleeve and the insulating base.

[0013] In the above technical solution, a spherical arc surface matching the shape of the spherical contact concave surface is provided on one side of the magnetic ring near the spherical contact concave surface.

[0014] In the above technical solution, a washer is provided at one end of the magnetic ring near the spherical contact concave surface. The washer is sandwiched between the magnetic ring and the conductive sleeve. A spherical arc surface matching the shape of the spherical contact concave surface is provided on one side of the washer near the spherical contact concave surface.

[0015] The beneficial effects of this invention are that it has a reasonable structure, novel design, and strong practicality. The male and female ends are automatically attracted and connected by magnetic force. The male end's connector and the female end's groove are hemispherical, which allows the male end to rotate 360° around the axis and swing relative to the female end with the center of the spherical contact concave surface as the center, greatly expanding the connection and swing angle between the male and female ends. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the male end and female end docking in Embodiment 1 of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the male end and female end docking in Embodiment 1 of the present invention.

[0018] Figure 3 This is a schematic diagram of the structure in Embodiment 1 of the present invention, showing that the male end and the female end are separated from each other.

[0019] Figure 4 This is an exploded structural diagram of the male end of Embodiment 1 of the present invention.

[0020] Figure 5 This is a schematic diagram of the exploded structure of the mother end in Embodiment 1 of the present invention.

[0021] Figure 6 This is a schematic diagram of the three angles of the male end and female end docking in Embodiment 1 of the present invention.

[0022] Figure 7 This is a schematic diagram of the male end structure of Embodiment 2 of the present invention.

[0023] Figure 8 This is a cross-sectional structural diagram of the male end and female end docking in Embodiment 3 of the present invention.

[0024] In the diagram: 1. Male end; 2. Female end; 3. Conductive component; 31. Spherical contact convex surface; 32. Shaft hole; 4. Insulating sleeve; 41. Center hole; 5. Spring needle; 51. First contact arc surface; 52. Needle shaft; 53. Inclined surface; 54. Inner spring; 55. Needle tube; 6. Conductive sleeve; 61. Spherical contact concave surface; 62. Fixing foot; 63. Protrusion; 7. Insulating seat; 71. Insulating ring; 72. Center hole; 73. Limiting ring; 74. Locking position; 8. Magnetic ring; 81 and 102. Spherical arc surface; 9. Conductive needle; 91. Second contact arc surface; 101. Washer. Detailed Implementation

[0025] Specific embodiments of the present invention are described with reference to the accompanying drawings.

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. All other embodiments obtained by those skilled in the art based on the embodiments provided by this invention without inventive effort are within the scope of protection of this invention. Furthermore, it is understood that although the efforts made in such development may be complex and lengthy, for those skilled in the art related to the content disclosed in this invention, modifications to design, manufacturing, or production based on the technical content disclosed in this invention are merely conventional technical means and should not be construed as insufficient disclosure of the invention.

[0027] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention may be combined with other embodiments without conflict.

[0028] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "a," "an," "the," and similar words used in this invention do not indicate quantity limitation and may indicate singular or plural. The terms "comprising," "including," "having," and any variations thereof used in this invention are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms "connected," "linked," "coupled," and similar words used in this invention are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "A plurality" in this invention means two or more. "And / or" describes the relationship between related objects, indicating that three relationships may exist; for example, "A and / or B" can represent: A alone, A and B simultaneously, and B alone. The terms "first," "second," and "third" used in this invention are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0029] like Figure 3As shown in the figure, the male end 1 and female end 2 are separated. The female end 2 is cylindrical and has a hemispherical mating groove formed by an inward indentation in the center. The male end 1 is roughly cylindrical and has a spherical head shape on the mating side.

[0030] Example 1,

[0031] This embodiment is the optimal implementation method, such as... Figure 1-6 As shown, a 2-pin magnetic connector includes a male terminal 1 and a female terminal 2. The male terminal 1 includes a spring pin 5 and a conductive element 3. The spring pin 5 is coaxially disposed within the conductive element 3. The conductive element 3 is provided with a spherical contact convex surface 31, and the contact end of the spring pin 5 protrudes from the center of the spherical contact convex surface 31. The female terminal 2 includes a conductive pin 9, a conductive sleeve 6, and a magnetic ring 8. The conductive pin 9 and the magnetic ring 8 are coaxially disposed within the conductive sleeve 6. The conductive sleeve 6 is provided with a spherical contact concave surface 61. In this embodiment, both the spherical contact convex surface 31 and the spherical contact concave surface 61 are hemispherical. The contact end of the conductive pin 9 protrudes from the center of the spherical contact concave surface 61, and the contact end of the spring pin 5 protrudes from the center of the spherical contact concave surface 61. Each end face of the contact end of the conductive needle 9 is provided with a first contact arc surface 51 and a second contact arc surface 91. There is no continuous transition between the spherical contact concave surface 61 and the second contact arc surface 91 and there is a height difference. When the male end 1 and the female end 2 are magnetically attracted to the conductive part 3 of the iron alloy material through the magnetic ring 8, the spherical contact concave surface 61 and the spherical contact convex surface 31 are in contact and conduction, and the first contact arc surface 51 and the second contact arc surface 91 are in contact and conduction. The male end 1 can rotate and swing relative to the female end 2 with the center of the spherical contact concave surface 61 as the center. The first contact arc surface 51 is a convex part of the spherical surface, and the second contact arc surface 91 is a concave part of the spherical surface.

[0032] A magnetic ring 8 is used as a permanent magnet to provide a magnetic source. The hollow magnetic ring 8 allows the conductive needle 9 to be installed at the axis of the magnetic ring 8. Through the magnetic attraction of the conductive part 3 made of iron alloy material by the magnetic force of the magnetic ring 8, the male end 1 can be magnetically attracted to the female end 2. Under the action of magnetic force, the spherical contact convex surface 31 of the male end 1 and the spherical contact concave surface 61 of the female end 2 make good contact. Under the action of the inner spring 54, the first contact arc surface 51 of the needle shaft 52 at the contact end of the spring needle 5 makes good contact with the second contact arc surface 91 of the conductive needle 9, ensuring stable signal transmission between the male end 1 and the female end 2.

[0033] like Figure 1 , 4 As shown, the male end 1 includes an insulating sleeve 4, which is made of plastic and serves as an electrical insulator between the spring pin 5 and the conductive element 3. The spring pin 5 passes through the central hole 41 of the insulating sleeve 4, and the insulating sleeve 4 passes through the shaft hole 32 of the conductive element 3. The end face of the insulating sleeve 4 and the contact end of the spring pin 5 protrude from the shaft hole 32 of the conductive element 3. The end face of the insulating sleeve 4 smoothly transitions to the spherical contact convex surface 31, so that when the male end 1 is mated with the female end 2, the rotation and swinging process of the male end 1 is smooth and will not be interfered with.

[0034] like Figure 4 As shown, the spring needle 5 includes a needle tube 55, an inner spring 54, and a needle shaft 52. The inner spring 54 and the needle shaft 52 are placed sequentially inside the needle tube 55. The opening of the needle tube 55 is narrowed so that the needle shaft 52 and the inner spring 54 will not detach from the needle tube 55. One end of the needle shaft 52 is a contact end, and the other end is a sliding end. The sliding end slides in contact with the inner wall of the needle tube 55. The inner spring 54 abuts against the inclined surface 53 of the sliding end, so that the needle shaft 52 will deflect slightly, ensuring that the sliding end is always in contact with the inner wall of the needle tube 55 for conduction.

[0035] The insulating sleeve 4 is injection molded from plastic material, which can compensate for the machining tolerance between the conductive part 3 and the spring pin 5. It can facilitate the assembly of the insulating sleeve 4 with the spring pin 5 and the conductive part 3. The assembly process of the male end 1 is that the spring pin 5 is first inserted into the insulating sleeve 4, and then the insulating sleeve 4 together is inserted into the conductive part 3 to complete the assembly. The assembly is relatively simple. The outer wall of the insulating sleeve 4 is interference-fitted with the inner wall of the shaft hole 32 of the conductive part 3, and the inner wall of the hole 41 of the insulating sleeve 4 is interference-fitted with the outer wall of the needle tube 55 of the spring pin 5, which reduces the production cost.

[0036] like Figure 5 As shown, the female end 2 includes an insulating base 7, with a conductive pin 9 passing through the central hole 72 of the insulating base 7. The conductive sleeve 6 has a fixing foot 62 at its end away from the spherical contact concave surface 61, which is riveted and fixed to the insulating base 7. The edge of the insulating base 7 has four locking positions 74, and the fixing foot 62 is bent and fixed in the locking positions 74. The assembly process of the female end 2 is as follows: the conductive component 3 is first inserted into the insulating base 7.

[0037] like Figure 1 As shown, an insulating ring 71 is provided around the central hole 72 in the insulating base 7. The insulating ring 71 serves as an electrical insulating component between the conductive needle 9 and the conductive sleeve 6. The insulating ring 71 extends towards the spherical contact concave surface 61. The insulating ring 71 is higher than the spherical contact concave surface 61, so that the spherical contact convex surface 31 and the spherical contact concave surface 61 have good contact. The second contact arc surface 91 of the conductive needle 9 is not higher than the end face of the insulating ring 71.

[0038] like Figure 1 , 6 As shown, there is no continuous transition between the spherical contact concave surface 61 and the second contact arc surface 91, and there is a height difference. The second contact arc surface 91 of the conductive needle 9 is set lower than the insulating ring 71. The portion of the inner wall of the insulating ring 71 that is higher than the second contact arc surface 91 of the conductive needle 9 forms a limiting retaining ring 73 to restrict the movement range of the contact end of the spring needle 5, thereby limiting the angle of rotation and swing of the male end 1 relative to the female end 2. Figure 6 Three docking angles are shown in -a, 6-b, and 6-c. Figure 6 -a represents the positive docking angle. Figure 6-b and Figure 6 -c represents two swing angles. Under different docking angles and swing angles, the male end 1 can rotate around the axis. In addition, a limiting step can be set in the outer circumference of the conductive part 3 (not shown in the figure). There is a certain distance between the limiting step and the spherical contact convex surface 31. When the male end 1 swings at a certain angle, the limiting step will abut against the end face of the conductive sleeve 6, so that the male end 1 can no longer swing, thereby limiting the swing angle range of the male end 1.

[0039] like Figure 2 As shown, the insulating base 7 is injection molded from plastic material. Several reinforcing ribs are provided at the bottom of the insulating base 7 to ensure the structural strength of the insulation.

[0040] A magnetic ring 8 is fitted onto the outer circumference of an insulating ring 71, and is fixedly assembled between a conductive sleeve 6 and an insulating base 7. A spherical arc surface 81, matching the shape of the spherical contact concave surface 61, is provided on one side of the magnetic ring 8 near the spherical contact concave surface 61. The spherical arc surface 81 optimizes the magnetic lines of force of the magnetic ring 8, resulting in a stronger magnetic force within the area of ​​the spherical contact concave surface 61. This allows the male end 1 to have a greater magnetic force and magnetically attract and connect with the female end 2. Simultaneously, it makes the assembly of the conductive sleeve 6 and the magnetic ring 8 more compact, allowing the female end 2 to have a smaller volume.

[0041] Example 2,

[0042] like Figure 7 As shown, compared to Embodiment 1, multiple protrusions 63 can be designed on the spherical contact concave surface 61. The protrusions 63 protrude towards the center of the spherical contact concave surface 61. When the male end 1 and the female end 2 are connected, the protrusions 63 and the spherical contact convex surface 31 are in contact and conduction. The conductive sleeve 6 and the conductive component 3 are in contact and conduction in a multi-point contact manner.

[0043] Example 3,

[0044] like Figure 8 As shown, compared to Embodiment 1, a washer 101 is provided at one end of the near-spherical contact concave surface 61 of the magnetic ring 8. The washer 101 is an iron alloy that can be magnetized. The magnetic ring 8 is circular with a square cross-section. The washer 101 is sandwiched between the magnetic ring 8 and the conductive sleeve 6. A spherical arc surface 102 matching the shape of the spherical contact concave surface 61 is provided on one side of the washer 101 near the spherical contact concave surface 61. The washer 101 fills the assembly space between the disc-shaped magnetic ring 8 and the conductive sleeve 6, ensuring that the magnetic ring 8 can be stably assembled in the female end 2.

[0045] This invention has a reasonable structure, novel design, and strong practicality. The male end 1 and the female end 2 are automatically attracted and connected by magnetic force. The mating joint of the male end 1 and the mating groove of the female end 2 are hemispherical, which allows the male end 1 to rotate 360° around the axis and swing relative to the female end 2 with the center of the spherical contact concave surface 61 as the center. The swing range is the size of the second contact arc surface 91, which greatly expands the docking and swing angle of the male end 1 and the female end 2 and has a high degree of docking freedom.

[0046] The above does not limit the technical scope of the present invention in any way. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A 2-pin magnetic connector, characterized in that, The device includes a male end and a female end. The male end includes a spring pin and a conductive element. The spring pin is coaxially disposed within the conductive element, which has a spherical contact convex surface. The contact end of the spring pin protrudes from the center of the spherical contact convex surface. The female end includes a conductive pin, a conductive sleeve, and a magnetic ring. The conductive pin and the magnetic ring are coaxially disposed within the conductive sleeve, which has a spherical contact concave surface. The contact end of the conductive pin protrudes from the center of the spherical contact concave surface. The contact ends of the spring pin and the conductive pin are respectively provided with... The first contact arc surface and the second contact arc surface have no continuous transition and have a height difference; when the male end and the female end are magnetically connected to the conductive part of the iron alloy material through the magnetic ring, the spherical contact concave surface and the spherical contact convex surface are in contact and conduction, and the first contact arc surface and the second contact arc surface are in contact and conduction. The male end can rotate and swing relative to the female end with the center of the spherical contact concave surface as the center; the male end includes an insulating sleeve, and the spring pin is inserted into the central hole of the insulating sleeve. Inside the shaft hole of the conductive component, the end face of the insulating sleeve and the contact end of the spring pin protrude from the shaft hole of the conductive component. The end face of the insulating sleeve smoothly transitions to the spherical contact convex surface. The female end includes an insulating seat, and the conductive pin passes through the central hole of the insulating seat. The end of the conductive sleeve away from the spherical contact concave surface is provided with a fixing foot that is riveted and fixed to the insulating seat. An insulating ring is provided around the central hole of the insulating seat. The insulating ring extends towards the spherical contact concave surface, and the end face of the insulating ring is not higher than the spherical contact concave surface. The first... The second contact arc surface is not higher than the end face of the insulating ring; the portion of the inner wall of the insulating ring that protrudes above the second contact arc surface of the conductive needle forms a limiting retaining ring that restricts the range of movement of the spring needle contact end, thereby limiting the angle of rotation and swing of the male end relative to the female end; the spring needle includes a needle tube, an inner spring, and a needle shaft, with the inner spring and needle shaft placed sequentially inside the needle tube. One end of the needle shaft is the contact end, and the other end is the sliding end. The sliding end slides in contact with the inner wall of the needle tube, and the inner spring abuts against the inclined surface of the sliding end, causing the needle shaft to deflect slightly, ensuring that the sliding end is always in contact with the inner wall of the needle tube for conduction.

2. A 2-pin magnetic connector according to claim 1, characterized in that, The outer wall of the insulating sleeve is interference-fitted with the inner wall of the conductive component shaft hole, and the inner wall of the hole in the insulating sleeve is interference-fitted with the outer wall of the spring needle tube.

3. A 2-pin magnetic connector according to claim 1, characterized in that, The edge of the insulating base is provided with a locking position, and the fixing foot is bent and fixed in the locking position.

4. A 2-pin magnetic connector according to claim 1, characterized in that, The magnetic ring is sleeved on the outer circumference of the insulating ring, and the magnetic ring is fixedly assembled between the conductive sleeve and the insulating base.

5. A 2-pin magnetic connector according to claim 4, characterized in that, The magnetic ring has a spherical arc surface on one side of the near-spherical contact concave surface that matches the shape of the spherical contact concave surface.

6. A 2-pin magnetic connector according to claim 4, characterized in that, A washer is provided at one end of the near-spherical contact concave surface of the magnetic ring, and the washer is sandwiched between the magnetic ring and the conductive sleeve. A spherical arc surface matching the shape of the spherical contact concave surface is provided on one side of the near-spherical contact concave surface of the washer.

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