A USB connector

Abstract

The application relates to a USB joint and relates to the technical field of communication. The USB joint comprises a shell and a circuit board, the shell is internally provided with a containing cavity for containing the circuit board, one end of the shell is provided with a mounting opening in communication with the containing cavity, a limiting block is mounted at the mounting opening, the limiting block comprises a bearing part extending into the containing cavity and a glue filling channel independent of the bearing part, the bearing part bears against one end of the circuit board close to the mounting opening, and the glue filling channel is in communication with the containing cavity through the limiting block. The application has the effects that the circuit board is difficult to move during glue filling and the outgoing cable is protected.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a USB connector. Background Technology

[0002] USB connectors have become the standard interface for electronic devices due to their high transmission speed, convenient power supply, and strong compatibility. During the manufacturing process of USB connectors, potting compound is commonly used to seal and reinforce the connection between the circuit board and the USB connector to improve the moisture resistance, dust resistance, and mechanical damage resistance of the circuit components.

[0003] In the traditional potting process, the circuit board is fixed at the potting station by a simple bracket or by hand, lacking a dedicated limiting device, making it difficult to achieve effective positioning. Therefore, the fluid pressure generated when the liquid colloid is injected can easily cause the circuit board to shift or shake. Utility Model Content

[0004] To address the problem that the circuit board is prone to displacement due to the lack of effective limiting during the potting of USB connectors, this application provides a USB connector.

[0005] The USB connector provided in this application adopts the following technical solution: A USB connector includes a housing and a circuit board. The housing has a receiving cavity for accommodating the circuit board. One end of the housing has a mounting port communicating with the receiving cavity. A limiting block is installed at the mounting port. The limiting block includes a supporting part extending into the receiving cavity and a potting channel independent of the supporting part. The supporting part abuts against one end of the circuit board near the mounting port, and the potting channel passes through the limiting block and communicates with the receiving cavity.

[0006] By adopting the above technical solution, a limiting block is installed on the housing before potting. The supporting part of the limiting block abuts against the end of the circuit board near the mounting port, so that the circuit board is relatively fixed in the receiving cavity. During potting, the potting is performed into the receiving cavity through the potting channel. Because the circuit board is held in place by the supporting part, the fluid pressure generated by the injection of the adhesive makes it difficult for the circuit board to shift or shake.

[0007] Preferably, the end of the housing where the limiting block is installed is covered with a protective cover, and the protective cover is provided with an outlet hole for the cable to pass through.

[0008] Preferably, the protective cover includes a cover portion and a cable outlet portion. The cover portion is sleeved on the outer periphery of one end of the housing where the limiting block is installed. The cable outlet portion is a protruding post integrally extending from the side of the cover portion away from the receiving cavity. The cable outlet hole is disposed through the axial center of the cable outlet portion.

[0009] Preferably, the protective cover is made of elastic rubber, and the cover portion is interference-fitted with the end of the housing.

[0010] Preferably, the outer periphery of the end of the housing where the limiting block is installed and the inner periphery of the cover are provided with annular ribs. When the protective cover is closed, the annular ribs of the cover and the annular ribs of the housing press against each other to tightly connect the housing and the protective cover.

[0011] Preferably, the abutting portion is provided with abutting protrusion protruding into the receiving cavity, and the abutting protrusion abuts against the end face of the circuit board.

[0012] Preferably, the abutting protrusion includes a vertical portion and a horizontal portion. The vertical portion extends longitudinally from the inner wall of the potting channel into the receiving cavity, and the horizontal portion extends laterally from the extension end of the vertical portion in a direction parallel to the circuit board. The horizontal portion abuts against the end face of the circuit board.

[0013] Preferably, there are two symmetrically arranged abutting protrusions, and the two horizontal parts are located on the same straight line and synchronously abut the end face of the circuit board.

[0014] Preferably, slots are provided on the two side walls of the receiving cavity along the mounting direction of the circuit board, and the two sides of the circuit board are inserted into the slots.

[0015] Preferably, the limiting block has buckles on both sides, and the housing has slots for the buckles to engage.

[0016] In summary, this application includes at least one of the following beneficial technical effects: Accurate positioning and good circuit board fixation: The axial positioning of the limiting block and the radial positioning of the slot enable the circuit board to be accurately fixed before potting, restricting the flow of the adhesive and preventing the circuit board from shifting. To protect the outgoing cable and extend its lifespan, the outgoing section is designed with a protruding post to prevent the sealing interface from being pulled when the cable is bent. This provides stress buffering for the cable after it has been potted, increases the cable's bending radius, and reduces the risk of root breakage. Attached Figure Description

[0017] Figure 1 This is an exploded view of the USB connector in an embodiment of this application.

[0018] Figure 2 This is a cross-sectional view of the USB connector in an embodiment of this application.

[0019] Figure 3 This is a partial cross-sectional view of the USB connector in an embodiment of this application.

[0020] Figure 4 This is a cross-sectional view of the USB connector from another perspective in the embodiments of this application.

[0021] Figure 5 This is an exploded view of the USB connector from another perspective in an embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Circuit board; 3. Limiting block; 4. Protective cover; 11. Receiving cavity; 12. Mounting port; 31. Glue channel; 41. Cable exit hole; 32. Mounting part; 33. Supporting part; 321. Buckle; 13. Slot; 331. Supporting protrusion; 14. Slot; 332. Vertical part; 333. Horizontal part; 42. Covering part; 43. Cable exit part; 5. Annular protrusion. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] This application discloses a USB connector. (See also...) Figure 1 and Figure 2 The USB connector includes a housing 1, a circuit board 2, a limiting block 3, and a protective cover 4. The housing 1 has a cavity 11 for mounting the circuit board 2. One end of the housing 1 has a USB interface, and the other end has a mounting port 12. The circuit board 2 is mounted in the cavity 11 through the mounting port 12. The limiting block 3 is installed at the mounting port 12 to limit the movement of the circuit board 2. The limiting block 3 is fixedly connected to the housing 1 and has a potting channel 31 that communicates with the mounting port 12 and the cavity 11. During potting, the adhesive enters the cavity 11 from the mounting port 12 through the potting channel. The side of the limiting block 3 facing the cavity 11 abuts against the end of the circuit board 2 near the mounting port 12 to limit displacement or shaking of the circuit board 2 during potting. The protective cover 4 covers the adhesive surface, providing sealing and protection. The protective cover 4 is provided with an outlet hole 41 for the cable to pass through. After the glue is applied, the protective cover 4 covers the outer side of the end of the housing 1 where the limiting block 3 is installed, and the cable passes through the outlet hole 41.

[0025] Reference Figure 1 and Figure 3 The limiting block 3 includes an integrally fixed mounting part 32 and a supporting part 33, which can be integrally formed. The mounting part 32 is fixedly connected to the housing 1, and an adhesive channel 31 is formed on the mounting part 32, passing through the mounting part 32 and communicating with the receiving cavity 11. As a specific embodiment, the mounting part 32 is provided with buckles 321 on both sides, and the housing 1 is provided with a slot 13 for the buckles 321 to engage. The limiting block 3 and the housing 1 are fixedly connected by the engagement of the buckles 321 and the slot 13. A guide slope can also be provided at the slot 13 to facilitate the smooth insertion of the buckles 321. Optionally, the mounting part 32 and the housing 1 can also be fixedly connected by interference fit or bonding.

[0026] Reference Figure 3 and Figure 4 The abutment part 33 is located on the side of the mounting part 32 facing the receiving cavity 11. The abutment part 33 extends into the receiving cavity 11 and abuts against the end of the circuit board 2 near the mounting opening 12. Specifically, the abutment part 33 is provided with an abutment protrusion 331 extending into the receiving cavity 11, and the abutment protrusion 331 and the end face of the circuit board 2 form a surface contact. Slots 14 for mounting the circuit board 2 are also provided on both sides of the cavity wall of the receiving cavity 11. The opening direction of the slots 14 is consistent with the mounting direction of the circuit board 2. One end of the slot 14 has an end wall. After the circuit board 2 is inserted into the slot 14 and abuts against the end wall of the slot 14, it is indicated that it is inserted into the correct position. The circuit board 2 is radially fixed through the slots 14. After the circuit board 2 is initially fixed by inserting into the slots 14, the limiting block 3 is engaged with the housing 1. The abutment protrusion 331 abuts against the end face of the circuit board 2. At this time, the abutment protrusion 331 undergoes a certain degree of elastic bending deformation under the reverse force of the end face of the circuit board 2, thereby continuously applying a preload force to the circuit board 2 to fix the circuit board 2 axially. The design of slot 14 and abutment protrusion 331 enables the circuit board 2 to be relatively fixed in both the radial and axial directions, thus making it difficult for the circuit board 2 to shift or shake during the potting process.

[0027] In one specific embodiment, the abutment protrusion 331 is constructed as an L-shaped structure extending from the edge of the glue-filling channel 31 into the receiving cavity 11. The abutment protrusion 331 includes a vertical portion 332 and a horizontal portion 333. The vertical portion 332 extends longitudinally from the inner wall of the glue-filling channel 31 into the receiving cavity 11, and the horizontal portion 333 extends laterally from the extension end of the vertical portion 332 in a direction parallel to the circuit board 2. The horizontal portion 333 abuts against the end face of the circuit board 2, and the vertical portion 332 is elastically bent by the reaction force of the circuit board 2. Preferably, two abutment protrusions 331 are provided, and the two abutment protrusions 331 are symmetrically distributed. The two vertical portions 332 extend from both sides of the glue-filling channel 31 into the receiving cavity 11, and the extension ends of the two vertical portions 332 extend towards each other to form two horizontal portions 333. The two horizontal portions 333 are located on the same straight line and simultaneously abut against the end face of the circuit board 2, making the limiting more stable.

[0028] Reference Figure 1 and Figure 5The protective cover 4 includes an integrally formed cover portion 42 and a cable outlet portion 43. The cover portion 42 is installed at the end of the housing 1 where the mounting port 12 is provided, and the cover portion 42 is sleeved on the outer periphery of the housing 1. The end face of the cover portion 42 is sealed with the glued surface after potting. The cable outlet portion 43 is configured as a protrusion extending from the end face of the cover portion 42 to the side opposite to the receiving cavity 11. The cable outlet hole 41 passes through the axial center of the cable outlet portion 43 and through the cover portion 42. The cable outlet portion 43 is configured as a protrusion to prevent the cable passing through the cable outlet hole 41 from pulling the sealing interface when bent. The cable outlet portion 43 increases the bending radius of the cable, thereby reducing the risk of cable root breakage.

[0029] Reference Figure 2 and Figure 5 The protective cover 4 is made of elastic rubber, and the cover part 42 is press-fitted to the end of the housing 1. To enhance the sealing and improve the tightness of the connection, an annular rib 5 is provided on the outer periphery of the end of the housing 1, and a corresponding annular rib 5 is provided on the inner periphery of the cover part 42. When the protective cover 4 is closed, the annular rib 5 of the housing 1 and the annular rib 5 of the cover part 42 are pressed against each other, so that the protective cover 4 and the housing 1 are tightly connected.

[0030] The implementation principle of a USB connector according to an embodiment of this application is as follows: The circuit board 2 is inserted into the receiving cavity 11 through the mounting port 12. The slots 14 on both sides of the circuit board 2 are pushed into the set positions. Then, the abutment part 33 of the limiting block 3 is aligned with the end of the circuit board 2. The limiting block 3 is fixed to the housing 1 by engaging with the slot 13 through the buckle 321. At this time, the abutment protrusion 331 presses tightly against the circuit board 2 to restrict its movement. Sealant is injected into the receiving cavity 11 through the potting channel 31 to fill the gap between the circuit board 2 and the housing 1. After potting, the cover part 42 of the protective cover 4 is pressed onto the end of the housing 1, and a seal is achieved by the interference fit of the annular rib 5. The cable is led out through the outlet hole 41 of the outlet part 43.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A USB connector, comprising a housing (1) and a circuit board (2), wherein the housing (1) has a receiving cavity (11) for accommodating the circuit board (2), characterized in that: One end of the housing (1) is provided with an installation port (12) communicating with the receiving cavity (11). A limiting block (3) is installed at the installation port (12). The limiting block (3) includes a supporting part (33) extending into the receiving cavity (11) and a potting channel (31) independent of the supporting part (33). The supporting part (33) abuts against one end of the circuit board (2) near the installation port (12). The potting channel (31) passes through the limiting block (3) and communicates with the receiving cavity (11).

2. The USB connector according to claim 1, characterized in that: The housing (1) is covered by a protective cover (4) at one end where the limiting block (3) is installed. The protective cover (4) has an outlet hole (41) for the cable to pass through.

3. The USB connector according to claim 2, characterized in that: The protective cover (4) includes a cover portion (42) and a cable outlet portion (43). The cover portion (42) is sleeved on the outer periphery of one end of the housing (1) where the limiting block (3) is installed. The cable outlet portion (43) is a protruding post integrally extending from the side of the cover portion (42) away from the receiving cavity (11). The cable outlet hole (41) is disposed through the axial center of the cable outlet portion (43).

4. The USB connector according to claim 3, characterized in that: The protective cover (4) is made of elastic rubber, and the cover part (42) is interference-fitted with the end of the housing (1).

5. The USB connector according to claim 4, characterized in that: The outer periphery of the end of the housing (1) on which the limiting block (3) is installed and the inner periphery of the cover (42) are provided with annular ribs (5). When the protective cover (4) is closed, the annular ribs (5) of the cover (42) and the annular ribs (5) of the housing (1) are pressed against each other to tightly connect the housing (1) and the protective cover (4).

6. The USB connector according to claim 1, characterized in that: The abutting part (33) is provided with an abutting protrusion (331) protruding into the receiving cavity (11), and the abutting protrusion (331) abuts against the end face of the circuit board (2).

7. The USB connector according to claim 6, characterized in that: The abutting protrusion (331) includes a vertical part (332) and a horizontal part (333). The vertical part (332) extends longitudinally from the inner wall of the potting channel (31) into the receiving cavity (11). The horizontal part (333) extends laterally from the extension end of the vertical part (332) in a direction parallel to the circuit board (2). The horizontal part (333) abuts against the end face of the circuit board (2).

8. The USB connector according to claim 7, characterized in that: Two abutting protrusions (331) are symmetrically arranged, and the two horizontal parts (333) are located on the same straight line and abut against the end face of the circuit board (2) simultaneously.

9. The USB connector according to claim 1, characterized in that: Slots (14) are provided on both sides of the cavity wall of the receiving cavity (11) along the mounting direction of the circuit board (2), and the two sides of the circuit board (2) are inserted into the slots (14).

10. The USB connector according to claim 1, characterized in that: The limiting block (3) is provided with buckles (321) on both sides, and the housing (1) is provided with a slot (13) for the buckles (321) to engage.

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