Pre-patch magnetic attraction charging interface

Abstract

The utility model discloses a pre-patch magnetic attraction charging interface, which comprises a conductive magnet, the projection formed on a plane perpendicular to the axial direction of the conductive magnet is in a closed ring shape, and the middle part of the conductive magnet is provided with a matching hole; the conductive column is arranged in the matching hole and is columnar; the insulating rubber sleeve is arranged in the matching hole in the outer side of the conductive column in a glue pouring forming mode; the two end parts in the axial direction of the heat insulation PCB are circuit boards, and the middle parts and the edges of the circuit boards are respectively provided with a welding disc; one end face of the conductive column in the axial direction and one end face of the conductive magnet in the axial direction are patch end faces, the patch end face of the conductive column is connected with the circular welding disc in a welded mode, and the patch end face of the conductive magnet is connected with the annular welding disc in a welded mode. Therefore, the heat insulation effect is achieved, and the yield during patch processing is improved.

Description

Technical Field

[0001] The utility model relates to the field of charging interface structures, and particularly to a pre-soldered magnetic charging interface. Background Art

[0002] A magnetic charging interface is a charging port structure widely used in smart wearable products (such as smart watches, bracelets, mobile phones, mobile power supplies, etc.). It has the characteristics of positioning by using the properties of magnets, a sealed design, and a long service life, enabling it to be used in different scenarios.

[0003] Refer to the attached Figure 3 It can be seen that the existing magnetic charging interfaces generally consist of a structure where the positive and negative poles are respectively a conductive column (inner ring) and a magnetic conductor (outer ring), and an insulating rubber sleeve is filled between the positive and negative poles. During the reflow soldering process of the magnetic charging interface in patch production, due to the high temperature and long time in the furnace, the insulating rubber sleeve may soften, expand, and bulge, resulting in poor patching of the magnetic charging interface and functional problems of the PCBA. Moreover, the softening, expansion, and deformation of the insulating rubber sleeve cause changes in the structural dimensions, affecting subsequent assembly. Content of the Utility Model

[0004] In view of the above technical deficiencies, the utility model provides a magnetic charging interface that adds a heat-insulating PCB board to play a heat-insulating role, improves the flatness of the patching end face of the magnetic charging interface, and enhances the yield rate during patching processing.

[0005] To achieve the above object, the utility model is realized through the following technical solutions:

[0006] The utility model discloses a pre-soldered magnetic charging interface, which includes:

[0007] A magnetic conductor, the projection formed on the plane perpendicular to its axial direction is a closed ring, and the middle part of the magnetic conductor is a fitting hole;

[0008] A conductive column, which is arranged in the fitting hole and is columnar;

[0009] An insulating rubber sleeve, which is arranged in the fitting hole outside the conductive column by means of potting molding, and is respectively connected to the inner surface of the magnetic conductor and the outer surface of the conductive column;

[0010] A heat-insulating PCB, both ends in its axial direction are circuit boards, welding pads are respectively arranged in the middle and at the edge of the circuit board. The shape of the welding pad located in the middle of the circuit board is circular, and the shape of the welding pad located at the edge of the circuit board is circular ring-shaped;

[0011] One end face in the axial direction of the conductive column and one end face in the axial direction of the electromagnetic conductor are both patch end faces. The patch end face of the conductive column is welded and connected to a welding pad with a circular shape, and the patch end face of the electromagnetic conductor is welded and connected to a welding pad with an annular shape. The end faces in the axial direction of the welding pads are all flat planes.

[0012] Furthermore, the heat-insulating PCB is made of a heat-insulating material or the surface of the heat-insulating PCB has a heat-insulating material layer.

[0013] Furthermore, the patch end face of the conductive column is flush with the patch end face of the electromagnetic conductor.

[0014] Furthermore, the two welding pads in the middle of the end face in the axial direction of the heat-insulating PCB are connected in an electrically connected manner, and the two welding pads at the edge of the end face in the axial direction of the heat-insulating PCB are connected in an electrically connected manner.

[0015] Furthermore, the end face in the axial direction of the conductive column and the end face in the axial direction of the insulating rubber sleeve are not in the same plane, so as to form a buffer space between the conductive column and the electromagnetic conductor and between the conductive column and the heat-insulating PCB.

[0016] The beneficial effects of the present utility model are as follows:

[0017] A heat-insulating PCB is pre-pasted on the patch end face side of the magnetic attraction charging interface, which not only plays a heat-insulating role, but also improves the flatness of the patch end of the magnetic attraction charging interface, improves the yield rate of the magnetic attraction charging interface during patch processing, and avoids the phenomena of softening, swelling, and bulging of the insulating rubber sleeve caused by high temperature in the furnace and long furnace time, and solves the problems of poor patching of the magnetic attraction charging interface and functional defects of the PCBA. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the internal structure of the magnetic attraction charging interface.

[0019] Figure 2 It is an exploded view of the components of the magnetic attraction charging interface.

[0020] Figure 3 It is a schematic diagram of the structure of an existing magnetic attraction charging interface.

[0021] In the figure, 1. Electromagnetic conductor; 2. Conductive column; 3. Matching hole; 4. Insulating rubber sleeve; 5. Heat-insulating PCB; 6. Circuit board; 7. Welding pad; 8. Patch end face; 9. Buffer space. Specific Embodiments

[0022] The utility model discloses a pre-patched magnetic attraction charging interface, as Figure 1 and 2As shown in combination, the magnetic charging interface includes:

[0023] A conductive magnet 1, the projection formed on a plane perpendicular to its axial direction is a closed ring, and the middle part of the conductive magnet 1 is a mating hole 3;

[0024] A conductive column 2, which is arranged in the mating hole 3 and is columnar;

[0025] An insulating rubber sleeve 4, which is arranged in the mating hole 3 outside the conductive column 2 by means of potting molding, and is respectively connected to the inner surface of the conductive magnet 1 and the outer surface of the conductive column 2;

[0026] A heat-insulating PCB 5, both ends in its axial direction are circuit boards 6, the middle part of the circuit board 6 and the edge of the circuit board 6 are respectively provided with welding pads 7, the shape of the welding pad 7 located in the middle of the circuit board 6 is circular, and the shape of the welding pad 7 located on the edge of the circuit board 6 is annular;

[0027] Among them, one end face in the axial direction of the conductive column 2 and one end face in the axial direction of the conductive magnet 1 are both patch end faces 8, the patch end face 8 of the conductive column 2 is welded to the circular welding pad 7, the patch end face 8 of the conductive magnet 1 is welded to the annular welding pad 7, and the end faces in the axial direction of the welding pad 7 are all flat.

[0028] It should be noted that when assembling the magnetic charging interface, first place the conductive post 2 into the mating hole 3, then weld the heat-insulating PCB 5 on the patch end face 8 of the electromagnetic magnet 1, and then form an insulating rubber sleeve 4 in the mating hole 3 outside the conductive post 2 by means of potting, thereby forming the magnetic charging interface. Finally, both circuit boards 6 in the axial direction of the heat-insulating PCB 5 can be connected to the patch end face 8 through the welding pads 7 in the middle, which is convenient for the operation of pre-patch processing. During the pre-patch processing of the magnetic charging interface, the conductive post 2 is welded to the circular-shaped welding pad 7 through the patch end face 8, and the patch end face 8 on the electromagnetic magnet 1 is welded to the circular-ring-shaped welding pad 7, and the pre-patch processing of the magnetic charging interface can be completed, and the operation is simple. A heat-insulating PCB 5 is pre-pasted on the side of the patch end face 8 of the magnetic charging interface, which not only plays a heat-insulating role, but also because the end faces of the welding pads 7 provided on the circuit boards 6 in the two axial directions of the heat-insulating PCB 5 are flat, so after the pre-patch processing of the magnetic charging interface, one of the circuit boards 6 with the heat-insulating PCB 5 on the surface of the patch end is used, so that the patch end face of the magnetic charging interface remains flat, which is beneficial to the stable position of the magnetic charging interface after patching, can improve the flatness of the patching position of the entire magnetic charging interface, and avoid the situation that the patching position of the magnetic charging interface is uneven with the patching material, resulting in the deviation of the position of the magnetic charging interface after patching, thereby improving the yield rate of the magnetic charging interface during patching processing, and can also avoid the phenomenon that the insulating rubber sleeve 4 softens, expands, and bulges due to high temperature in the furnace and long furnace time, and solves the problems of poor patching of the magnetic charging interface and functional defects of the PCBA.

[0029] As a further preference of the above embodiment, as Figure 1 shown, the heat-insulating PCB 5 is made of a heat-insulating material or the surface of the heat-insulating PCB 54 has a heat-insulating material layer.

[0030] Among them, through the heat-insulating characteristics exhibited by the PCB itself or by setting a structure with heat-insulating characteristics on the surface of the PCB, during the production process of the magnetic charging interface, according to the actual processing material situation, production cost, and the functional characteristics requirements of the magnetic charging interface, it is possible to select which heat-insulating characteristics of the PCB for assembly, provide different production assembly methods for the magnetic charging interface, and make the production and processing method of the magnetic charging interface closer to the actual production and processing situation.

[0031] As a further preference of the above embodiment, as Figure 1 shown, the patch end face 8 of the conductive post 2 is flush with the patch end face 8 of the electromagnetic magnet 1.

[0032] Among them, the patch end face 8 on the conductive post 2 and the patch end face 8 of the electromagnetic magnet 1 are flush with each other. Before the patch of this magnetic charging interface is pre-processed, the end faces on the patch side of the entire magnetic charging interface are all a plane. Coupled with the fact that the end faces in both axial directions of the heat-insulating PCB 5 are planes, the overall flatness of the magnetic charging interface after pre-patch processing is relatively high. Furthermore, the magnetic charging interface has a strong position-holding ability during patching, avoiding the situation where the patching position deviates due to insufficient flatness of the magnetic charging interface, enabling the charging interface on the external device to be accurately docked with the magnetic charging interface, and reducing the problem of poor contact caused by the unevenness of the magnetic charging interface.

[0033] As a further preference of the above embodiment, as Figure 1 shown, the two welding pads 7 in the middle of the end face in the axial direction of the heat-insulating PCB 5 are connected in an electrically conductive manner, and the two welding pads 7 on the edge of the end face in the axial direction of the heat-insulating PCB 5 are connected in an electrically conductive manner.

[0034] Among them, after the welding pads 7 on the two end faces in the axial direction of the heat-insulating PCB 5 are connected in an electrically conductive manner, the two end faces in the axial direction of the two heat-insulating PCBs 5 can both be connected to the patch end face 8, thereby achieving the effect of facilitating the pre-patch processing operation.

[0035] As a further preference of the above embodiment, as Figure 1 shown, the end face in the axial direction of the conductive post 2 and the end face in the axial direction of the insulating rubber sleeve 4 are not in the same plane, thereby forming a buffer space 9 between the conductive post 2 and the electromagnetic magnet 1 and between the conductive post 2 and the heat-insulating PCB 5.

[0036] Among them, buffer spaces 9 are provided outside both ends of the insulating rubber sleeve 4 in the magnetic charging interface. When the insulating rubber sleeve 4 expands due to temperature rise, the buffer space 9 can provide a buffer space for it, avoiding the situation where the insulating rubber sleeve 4 expands and protrudes out of the end of the conductive post 2 in the axial direction, resulting in poor contact between the conductive post 2 and the charging interface on the external device or damage to the components on the patch side caused by extrusion.

[0037] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pre-mounted magnetic charging interface, characterized in that: The magnetic charging interface includes: The electroconductive magnet has a projection on a plane perpendicular to its axial direction that is a closed ring, and the middle of the electroconductive magnet is a matching hole; A conductive column, which is disposed in the matching hole and is columnar; The insulating rubber sleeve is arranged in the matching hole outside the conductive column by means of glue injection molding, and is respectively connected to the inner surface of the conductive magnet and the outer surface of the conductive column; A heat-insulating PCB, wherein both ends in the axial direction are circuit boards, and the middle part and the edge of the circuit board are respectively provided with welding pads, the welding pad located in the middle part of the circuit board is circular in shape, and the welding pad located at the edge of the circuit board is annular in shape; One of the end faces of the conductive column in the axial direction and one of the end faces of the conductive magnet in the axial direction are both patch end faces. The patch end face of the conductive column is welded to a circular welding pad, and the patch end face of the conductive magnet is welded to a ring-shaped welding pad. The end faces of the welding pad in the axial direction are both planes.

2. The magnetic charging interface according to claim 1, characterized in that: The heat-insulating PCB is made of a heat-insulating material or a surface of the heat-insulating PCB has a heat-insulating material layer.

3. The magnetic charging interface according to claim 1, characterized in that: The patch end surface of the conductive column is flush with the patch end surface of the conductive magnet.

4. The magnetic charging interface according to claim 1, characterized in that: The two welding pads in the middle of the end surface in the axial direction of the insulation PCB are connected in an electrically connected manner, and the two welding pads at the edge of the end surface in the axial direction of the insulation PCB are connected in an electrically connected manner.

5. The magnetic charging interface according to claim 1, characterized in that: The end surface of the conductive column in the axial direction and the end surface of the insulating rubber sleeve in the axial direction are not on the same plane, so a buffer space is formed between the conductive column and the conductive magnet and between the conductive column and the heat-insulating PCB.

Images