Magnetic charging head

Abstract

The utility model discloses a magnetic charging head, which comprises a metal sheath, an elastic sheath, a metal vibrating needle and a magnet block, the elastic sheath is provided with a mounting through hole, the metal vibrating needle is pressed in the mounting through hole, and two ends of the metal vibrating needle are exposed; one end of the metal sheath is closed and is provided with a vibrating needle exposing hole, the other end of the metal sheath is open, the elastic sheath is inserted into the metal sheath from the open end, and the metal vibrating needle is exposed from the vibrating needle exposing hole; and a magnet block is arranged between the elastic sheath and the metal sheath. According to the invention, the hard contact of magnetic attraction is optimized into the soft contact of the metal vibrating needle, on one hand, small foreign matters are not afraid, and on the other hand, the vibrating needle plays a buffering role to protect the magnetic attraction head when the magnet is attracted; in addition, a PCB (printed circuit board) fixing process is omitted, the production and assembly difficulty is reduced, and the product cost is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of charging head structure technology, specifically to a magnetic charging head. Background Technology

[0002] Currently, most magnetic charging heads on the market employ a contact-type structure design with a positive electrode pin and a negative electrode metal ring. The positive electrode pin uses a rigid, non-elastic material for contact, while the negative electrode establishes a conductive circuit through the ring-shaped metal surface. In practical applications, due to the inherent characteristics of the magnetic structure, the surface of the metal ring easily attracts conductive foreign objects such as iron filings and metal dust. When the accumulation of these foreign objects reaches a critical value, it will cause insulation failure between the electrodes, resulting in a localized short circuit. More seriously, these conductive foreign objects are tiny and tightly adhered, making them difficult to remove completely using conventional cleaning methods, posing a persistent safety hazard. Utility Model Content

[0003] The purpose of this utility model is to provide a magnetic charging head that, while improving reliable electrical connection, can effectively solve the short circuit risk caused by foreign matter accumulation on the electrode surface, simplify the production process, reduce overall manufacturing costs, improve product maintainability, reduce the use of spoiler production materials, reduce residual internal stress, and extend product life.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A magnetic charging head includes a metal sheath, an elastic sheath, a metal spring pin, and a magnet; the elastic sheath has a mounting hole, the metal spring pin is pressed into the mounting hole, and both ends are exposed; one end of the metal sheath is closed and has a spring pin protrusion hole, the other end is open, the elastic sheath is inserted into the metal sheath from the open end, and one end of the metal spring pin protrudes from the spring pin protrusion hole; a magnet is disposed between the elastic sheath and the metal sheath.

[0006] Furthermore, the elastic sheath is made of plastic.

[0007] Furthermore, the elastic sheath includes a fixing part and a magnet placement part, the magnet placement part is connected to the lower end of the fixing part, the mounting through hole passes through the fixing part and the magnet placement part, and there are two magnet blocks, which are respectively placed on both sides of the magnet placement part.

[0008] Furthermore, a guide block is provided at one end of the opening of the metal sheath, and a guide groove is provided in the fixing part. The guide block and the guide groove are slidably connected and used in conjunction.

[0009] Furthermore, there are three metal spring pins, and three mounting holes are arranged side by side at intervals. The three metal spring pins are inserted into the three mounting holes respectively, and the length of the middle one protruding from the spring pin hole is shorter than that of the two metal spring pins on both sides.

[0010] Furthermore, the metal sheath is bonded or snapped to the elastic sheath.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This application optimizes the hard contact of the magnetic attraction into a soft contact of a metal spring pin. Firstly, it is not afraid of small foreign objects, and secondly, the spring pin plays a buffering role when the magnet is attracted, protecting the magnetic head. Attached Figure Description

[0013] Figure 1 The diagram shown is a first schematic diagram of the structure of the magnetic charging head provided in an embodiment of this application;

[0014] Figure 2 The diagram shown is a second schematic diagram of the structure of the magnetic charging head provided in an embodiment of this application;

[0015] Figure 3 The diagram shown is an exploded view of the magnetic charging head provided in an embodiment of this application.

[0016] In the diagram, there is a metal sheath 1, an elastic sheath 2, a metal spring pin 3, and a magnet block 4. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0020] like Figures 1-3 The diagram shows the structure of an embodiment provided by this utility model.

[0021] This embodiment provides a magnetic charging head, including a metal sleeve 1, an elastic sleeve 2, a metal spring pin 3, and a magnet 4; the elastic sleeve 2 is provided with a mounting through hole, the metal spring pin 3 is pressed into the mounting through hole, and both ends are exposed; one end of the metal sleeve 1 is closed and provided with a spring pin protrusion hole, and the other end is open, the elastic sleeve 2 is inserted into the metal sleeve 1 from the open end, and one end of the metal spring pin 3 protrudes from the spring pin protrusion hole; a magnet 4 is provided between the elastic sleeve 2 and the metal sleeve 1.

[0022] Preferably, the elastic sheath 2 is made of plastic.

[0023] Preferably, the elastic sheath 2 includes a fixing part and a magnet placement part, the magnet placement part is connected to the lower end of the fixing part, the mounting through hole passes through the fixing part and the magnet placement part, and the magnet block 4 consists of two pieces, which are respectively placed on both sides of the magnet placement part.

[0024] Preferably, a guide block is provided at one end of the opening of the metal sheath 1, and a guide groove is provided in the fixing part. The guide block and the guide groove are slidably connected and used in conjunction.

[0025] Preferably, there are three metal spring pins 3, and three mounting holes are arranged side by side at intervals. The three metal spring pins 3 are respectively inserted into the three mounting holes, and the length of the middle one protruding from the spring pin hole is shorter than that of the two side metal spring pins 3. It should be noted that the middle one of the three metal spring pins 3 is the positive electrode and the two side ones are the negative electrodes, or the two side ones are the positive electrodes and the middle one is the negative electrode.

[0026] Preferably, the metal sheath 1 and the elastic sheath 2 are bonded or snapped together.

[0027] During installation, first press the three metal spring pins 3 into the elastic sleeve 2, with the middle positive spring pin (middle spring pin) protruding slightly; next, place the two magnet blocks 4 on both sides of the elastic sleeve 2; then place the entire assembly into the metal sleeve 1, and fix it using adhesive or snap-fit ​​technology.

[0028] The positive and negative terminals of the magnetic charging head in this application both use POGOPIN spring-loaded pins. The connection and disconnection rely on the point contact of the spring-loaded pins. In addition, the spring-loaded pins can effectively reduce the impact force generated by the magnetic attraction and protect the product.

[0029] In addition, the magnetic heads commonly found in the current market have a built-in PCB, which is then covered and fixed with an encapsulation process. The PCB is used to solder and fix the pins, and then the PCB is soldered to the product. However, this application eliminates the PCB fixing solution and directly solders the pins and the two corners of the sheath to the product, which can reduce product and assembly costs.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetic charging head, characterized in that, It includes a metal sheath (1), an elastic sheath (2), a metal spring pin (3), and a magnet (4); The elastic sleeve (2) is provided with an installation through hole, and the metal spring needle (3) is pressed into the installation through hole with both ends exposed; one end of the metal sleeve (1) is closed and provided with a spring needle protrusion hole, and the other end is open. The elastic sleeve (2) is inserted into the metal sleeve (1) from the open end, and one end of the metal spring needle (3) is exposed from the spring needle protrusion hole; a magnet block (4) is provided between the elastic sleeve (2) and the metal sleeve (1).

2. The magnetic charging head of claim 1, wherein, The elastic sheath (2) is made of plastic.

3. The magnetic charging head of claim 1, wherein, The elastic sheath (2) includes a fixing part and a magnet placement part. The magnet placement part is connected to the lower end of the fixing part. The mounting through hole passes through the fixing part and the magnet placement part. The magnet block (4) consists of two pieces, which are placed on both sides of the magnet placement part.

4. The magnetic charging head of claim 3, wherein, The metal sheath (1) has a guide block at one end of its opening, and the fixing part has a guide groove. The guide block and the guide groove are slidably connected and used in conjunction.

5. The magnetic charging head of claim 1, wherein, There are three metal spring pins (3), and three mounting holes are arranged side by side at intervals. The three metal spring pins (3) are inserted into the three mounting holes respectively, and the length of the middle one protruding from the spring pin hole is shorter than that of the two metal spring pins (3).

6. The magnetic charging head of claim 1, wherein, The metal sheath (1) is bonded or snapped to the elastic sheath (2).

Images