Charging ejector pin and PCB connecting structure

Abstract

The utility model discloses a charging ejector pin and PCB connecting structure, which comprises a shell, a PCB arranged in the shell and an ejector pin penetrating through the shell, one end, facing the PCB, of the ejector pin is sleeved with a conductive external member, the end part of the conductive external member extends towards the PCB to form a pin, and the pin is welded on a bonding pad of the PCB. According to the utility model, the conductive external member is sleeved on the ejector pin, and the pin on the conductive external member is welded on the bonding pad of the PCB, so that conduction between the ejector pin and the PCB is realized. Through the arrangement mode, the point for welding is located on the PCB, and an electric soldering iron for welding is not in direct contact with the ejector pin, so that the shell around the ejector pin can be prevented from being damaged, and the waterproof performance of the shell is effectively ensured. Meanwhile, the pins are fixedly connected with the bonding pads on the PCB in a welding mode, so that the stability of the connection state between the ejector pins and the PCB is guaranteed, and the situation that disconnection and the like do not occur in the charging process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic circuits, and in particular to a connection structure between a charging ejector pin and a PCB board. Background Art

[0002] Smart electronic locks with mobile communication and GPS positioning capabilities are IoT devices with security features and are widely used in logistics tracking and asset management. However, the design of such products is also quite challenging. For example, the contact between the charging pin and the PCB motherboard. Real-time tracking and positioning devices consume power rapidly due to prolonged operation, requiring a large battery capacity and high charging speed requirements. However, the charging pin is typically exposed, and high waterproofing requirements are required. Therefore, balancing the exposed pin with the waterproofing of the device presents a design challenge.

[0003] In the current existing technology, there are generally two ways to contact the charging ejector pin: one is the contact between the spring and the ejector pin, and the other is welding.

[0004] 1. The contact method between the spring and the ejector pin is generally to attach the spring to the PCB board, and the spring and the ejector pin are in active contact to achieve conduction. This connection method has a weak current flow capacity and is prone to disconnection between the ejector and the spring when the product is subjected to external pressure or dropped, resulting in improper charging.

[0005] 2. Wire soldering electrically connects the PCB to the ejector pins. While this method can address the flow-through issue, for products with strict waterproofing requirements, this setup can cause the ejector pins to heat up during soldering, melting the plastic in contact with them and affecting the appearance and waterproofing.

[0006] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a connection structure between a charging ejector pin and a PCB board.

[0008] The technical solution of the present utility model is as follows: A charging ejector pin and PCB board connection structure is provided, comprising: a housing, a PCB board arranged inside the housing, and an ejector pin passing through the housing, wherein a conductive sleeve is sleeved on one end of the ejector pin facing the PCB board, and the end of the conductive sleeve extends toward the PCB board to form a pin, and the pin is soldered to a pad on the PCB board.

[0009] Furthermore, a through hole is provided on the PCB board corresponding to the ejector pin, the end of the ejector pin passes through the through hole, and the pin of the conductive kit is located on a side of the PCB board away from the housing.

[0010] Furthermore, the inner diameter of the conductive sleeve and the outer diameter of the ejector pin are interference fit.

[0011] Furthermore, the conductive kit adopts a spring structure.

[0012] Furthermore, the shell is made of plastic material, and the shell is injection molded and wrapped around the outside of the ejector pin.

[0013] Furthermore, a connection groove is provided at a connection position of the top pin corresponding to the shell.

[0014] Adopting the above solution, the utility model achieves electrical connection between the ejector pin and the PCB by installing a conductive sleeve over the ejector pin and soldering the pins of the conductive sleeve to the pads on the PCB. This arrangement ensures that the soldering point is located on the PCB, and the soldering iron used for soldering does not directly contact the ejector pin. This prevents damage to the housing surrounding the ejector pin, effectively ensuring the housing's waterproof performance. Furthermore, the pins are connected and fixed to the pads on the PCB by welding, thereby ensuring the stability of the connection between the ejector pin and the PCB, and preventing disconnection during charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 It is a partially enlarged schematic diagram of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] See also Figure 1 、 Figure 2 The present invention provides a connection structure between a charging ejector pin 3 and a PCB board 2, comprising: a housing 1, a PCB board 2 arranged inside the housing 1, and an ejector pin 3 passing through the housing 1. A conductive sleeve 4 is sleeved on one end of the ejector pin 3 facing the PCB board 2. The end of the conductive sleeve 4 extends toward the PCB board 2 to form a pin 41, and the pin 41 is soldered to a pad on the PCB board 2.

[0019] When connecting ejector pin 3 to PCB board 2, conductive sleeve 4 is first placed over the end of ejector pin 3 so that conductive sleeve 4 contacts ejector pin 3. Pins 41 extending from conductive sleeve 4 are then brought into contact with corresponding pads on PCB board 2. Pins 41 are then soldered to the pads on PCB board 2 to achieve electrical connection between ejector pin 3 and PCB board 2. This arrangement ensures that the soldering point is on PCB board 2, and the soldering iron used for soldering does not directly contact ejector pin 3. This prevents damage to housing 1 around ejector pin 3, effectively ensuring the waterproof performance of housing 1. At the same time, pins 41 are connected and fixed to the pads on PCB board 2 through soldering, thereby ensuring the stability of the connection between ejector pin 3 and PCB board 2 and preventing disconnection during charging.

[0020] In some embodiments, a through hole is provided on the PCB board 2 corresponding to the ejector pin 3, and the end of the ejector pin 3 passes through the through hole. The pin 41 of the conductive kit 4 is located on the side of the PCB board 2 away from the shell 1, which is convenient for assembling the various components and then soldering the pin 41 of the conductive kit 4 to the PCB board 2, facilitating the assembly operation and effectively improving the overall assembly efficiency.

[0021] In some embodiments, the inner diameter of the conductive sleeve 4 and the outer diameter of the ejector pin 3 form an interference fit. This interference fit ensures a tight connection between the conductive sleeve 4 and the ejector pin 3, ensuring a secure connection and preventing unstable charging due to gaps between the conductive sleeve 4 and the ejector pin 3. In a specific embodiment, the inner diameter of the conductive sleeve 4 is 0.05 mm smaller than the outer diameter of the ejector pin 3, ensuring a tight fit between the ejector pin 3 and the conductive sleeve 4, and ensuring more stable and reliable contact between the two pins.

[0022] In some embodiments, the conductive sleeve 4 is a spring structure. Since the conductive sleeve 4 is a spring structure with a certain degree of deformation, when connecting the spring structure to the ejector pin 3, it is convenient to expand the inner diameter of the spring structure and fit it over the ejector pin 3. This allows the conductive sleeve 4 to be tightly fitted over the ejector pin 3, achieving a stable connection between the conductive sleeve 4 and the ejector pin 3 and avoiding the need for welding on the ejector pin 3.

[0023] In some embodiments, the housing 1 is made of plastic and is injection molded and wrapped around the outside of the ejector pin 3. Injection molding can tightly connect the housing 1 and the ejector pin 3, thereby avoiding a gap between the housing 1 and the ejector pin 3 and ensuring that the overall waterproof performance of the housing 1 meets product requirements.

[0024] In some embodiments, a connection groove 31 is provided at the connection point between the ejector pin 3 and the housing 1. During the injection molding process of the housing 1, the glue flows into the connection groove 31. After curing, the housing 1 is wrapped and embedded in the connection groove 31. This ensures the stability of the connection between the ejector pin 3 and the housing 1, prevents the ejector pin 3 from moving along the molding hole of the housing 1, and effectively ensures a waterproof seal between the ejector pin 3 and the housing 1.

[0025] In summary, the present invention achieves conduction between the ejector pin and the PCB board by installing a conductive sleeve on the ejector pin and soldering the pins on the conductive sleeve to the pads on the PCB board. With this arrangement, the soldering point is located on the PCB board, and the soldering iron used for soldering does not directly contact the ejector pin. Therefore, damage to the shell around the ejector pin can be avoided, effectively ensuring the waterproof performance of the shell. At the same time, the pins are connected and fixed to the pads on the PCB board by welding, thereby ensuring the stability of the connection between the ejector pin and the PCB board, and ensuring that disconnection and the like will not occur during charging.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A charging ejector pin and PCB board connection structure, characterized in that: include: A housing, a PCB board arranged inside the housing, and a pin passing through the housing, wherein a conductive sleeve is sleeved on one end of the pin facing the PCB board, and the end of the conductive sleeve extends toward the PCB board to form a pin, and the pin is soldered to the pad of the PCB board.

2. The charging ejector pin and PCB board connection structure according to claim 1, characterized in that: The PCB board is provided with a through hole corresponding to the ejector pin, and the end of the ejector pin passes through the through hole. The pin of the conductive kit is located on a side of the PCB board away from the housing.

3. The charging ejector pin and PCB board connection structure according to claim 1, characterized in that: The inner diameter of the conductive sleeve and the outer diameter of the ejector pin are interference fit.

4. The charging ejector pin and PCB board connection structure according to claim 1, characterized in that: The conductive kit adopts a spring structure.

5. The charging ejector pin and PCB board connection structure according to claim 1, characterized in that: The shell is made of plastic material, and is injection molded and wrapped around the outside of the ejector pin.

6. The charging ejector pin and PCB board connection structure according to claim 1, characterized in that: A connecting groove is provided at a connection position of the top pin corresponding to the shell.

Images